Update to trunk r13621

(bzr r13341.1.278)

64 files changed, 3153 insertions, 508 deletions

diff --git a/src/2geom/math-utils.h b/src/2geom/math-utils.h
index 83c7b4f5e..0d5d3667b 100644
--- a/src/2geom/math-utils.h
+++ b/src/2geom/math-utils.h
@@ -111,7 +111,7 @@ inline void sincos(double angle, double &sin_, double &cos_) {
 # define IS_NAN(_a) (_isnan(_a)) 	/* Win32 definition */
 #elif defined(isnan) || defined(__FreeBSD__) || defined(__osf__)
 # define IS_NAN(_a) (isnan(_a))		/* GNU definition */
-#elif defined (SOLARIS_2_8) && __GNUC__ == 3 && __GNUC_MINOR__ == 2
+#elif defined (SOLARIS)
 # define IS_NAN(_a) (isnan(_a))		/* GNU definition */
 #else
 # define IS_NAN(_a) (boost::math::isnan(_a))
@@ -129,7 +129,7 @@ inline void sincos(double angle, double &sin_, double &cos_) {
 # define IS_FINITE(_a) (isfinite(_a))
 #elif defined(__osf__)
 # define IS_FINITE(_a) (finite(_a) && !IS_NAN(_a))
-#elif defined (SOLARIS_2_8) && __GNUC__ == 3 && __GNUC_MINOR__ == 2
+#elif defined (SOLARIS)
 #include  <ieeefp.h>
 #define IS_FINITE(_a) (finite(_a) && !IS_NAN(_a))
 #else
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c77a9bf63..1455b762e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -32,6 +32,8 @@ set(sp_SRC
 	sp-gradient-reference.cpp
 	sp-gradient.cpp
 	sp-guide.cpp
+	sp-hatch.cpp
+	sp-hatch-path.cpp
 	sp-image.cpp
 	sp-item-group.cpp
 	sp-item-notify-moveto.cpp
@@ -116,6 +118,8 @@ set(sp_SRC
 	sp-guide-attachment.h
 	sp-guide-constraint.h
 	sp-guide.h
+	sp-hatch.h
+	sp-hatch-path.h
 	sp-image.h
 	sp-item-group.h
 	sp-item-notify-moveto.h
diff --git a/src/Makefile_insert b/src/Makefile_insert
index d6db76eea..2fff44cb8 100644
--- a/src/Makefile_insert
+++ b/src/Makefile_insert
@@ -145,6 +145,8 @@ ink_common_sources +=	\
 	sp-guide-attachment.h						\
 	sp-guide-constraint.h						\
 	sp-guide.cpp sp-guide.h						\
+	sp-hatch.cpp sp-hatch.h                     \
+	sp-hatch-path.cpp sp-hatch-path.h           \
 	sp-image.cpp sp-image.h						\
 	sp-item.cpp sp-item.h						\
 	sp-item-group.cpp sp-item-group.h				\
diff --git a/src/attributes.cpp b/src/attributes.cpp
index 87bfdbe88..d142d1a06 100644
--- a/src/attributes.cpp
+++ b/src/attributes.cpp
@@ -293,6 +293,11 @@ static SPStyleProp const props[] = {
     {SP_ATTR_PATTERNUNITS, "patternUnits"},
     {SP_ATTR_PATTERNCONTENTUNITS, "patternContentUnits"},
     {SP_ATTR_PATTERNTRANSFORM, "patternTransform"},
+    /* SPHatch */
+    {SP_ATTR_HATCHUNITS, "hatchUnits"},
+    {SP_ATTR_HATCHCONTENTUNITS, "hatchContentUnits"},
+    {SP_ATTR_HATCHTRANSFORM, "hatchTransform"},
+    {SP_ATTR_PITCH, "pitch"},
     /* SPClipPath */
     {SP_ATTR_CLIPPATHUNITS, "clipPathUnits"},
     /* SPMask */
diff --git a/src/attributes.h b/src/attributes.h
index 598d68fa3..8e091df71 100644
--- a/src/attributes.h
+++ b/src/attributes.h
@@ -295,6 +295,11 @@ enum SPAttributeEnum {
     SP_ATTR_PATTERNUNITS,
     SP_ATTR_PATTERNCONTENTUNITS,
     SP_ATTR_PATTERNTRANSFORM,
+    /* SPHatch */
+    SP_ATTR_HATCHUNITS,
+    SP_ATTR_HATCHCONTENTUNITS,
+    SP_ATTR_HATCHTRANSFORM,
+    SP_ATTR_PITCH,
     /* SPClipPath */
     SP_ATTR_CLIPPATHUNITS,
     /* SPMask */
diff --git a/src/box3d-side.h b/src/box3d-side.h
index 89b3b0399..4783a5f24 100644
--- a/src/box3d-side.h
+++ b/src/box3d-side.h
@@ -7,6 +7,7 @@
  * Authors:
  *   Maximilian Albert <Anhalter42@gmx.de>
  *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
  *
  * Copyright (C) 2007  Authors
  *
@@ -17,9 +18,6 @@
 #include "axis-manip.h"
 
 
-#define SP_BOX3D_SIDE(obj) (dynamic_cast<Box3DSide*>((SPObject*)obj))
-#define SP_IS_BOX3D_SIDE(obj) (dynamic_cast<const Box3DSide*>((SPObject*)obj) != NULL)
-
 class SPBox3D;
 class Persp3D;
 
diff --git a/src/box3d.cpp b/src/box3d.cpp
index eb82524dd..5f60766f4 100644
--- a/src/box3d.cpp
+++ b/src/box3d.cpp
@@ -6,6 +6,7 @@
  *   Lauris Kaplinski <lauris@kaplinski.com>
  *   bulia byak <buliabyak@users.sf.net>
  *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
  *
  * Copyright (C) 2007      Authors
  * Copyright (C) 1999-2002 Lauris Kaplinski
@@ -263,9 +264,10 @@ void box3d_position_set(SPBox3D *box)
 {
     /* This draws the curve and calls requestDisplayUpdate() for each side (the latter is done in
        box3d_side_position_set() to avoid update conflicts with the parent box) */
-    for ( SPObject *child = box->firstChild(); child; child = child->getNext() ) {
-        if (SP_IS_BOX3D_SIDE(child)) {
-            box3d_side_position_set(SP_BOX3D_SIDE(child));
+    for ( SPObject *obj = box->firstChild(); obj; obj = obj->getNext() ) {
+        Box3DSide *side = dynamic_cast<Box3DSide *>(obj);
+        if (side) {
+            box3d_side_position_set(side);
         }
     }
 }
@@ -1079,10 +1081,10 @@ box3d_recompute_z_orders (SPBox3D *box) {
 static std::map<int, Box3DSide *> box3d_get_sides(SPBox3D *box)
 {
     std::map<int, Box3DSide *> sides;
-    for ( SPObject *side = box->firstChild(); side; side = side->getNext() ) {
-        if (SP_IS_BOX3D_SIDE(side)){
-            Box3DSide *bside = SP_BOX3D_SIDE(side);
-            sides[Box3D::face_to_int(bside->getFaceId())] = bside;
+    for ( SPObject *obj = box->firstChild(); obj; obj = obj->getNext() ) {
+        Box3DSide *side = dynamic_cast<Box3DSide *>(obj);
+        if (side) {
+            sides[Box3D::face_to_int(side->getFaceId())] = side;
         }
     }
     sides.erase(-1);
@@ -1280,9 +1282,10 @@ SPGroup *box3d_convert_to_group(SPBox3D *box)
     // create a new group and add the sides (converted to ordinary paths) as its children
     Inkscape::XML::Node *grepr = xml_doc->createElement("svg:g");
 
-    for ( SPObject *child = box->firstChild(); child; child = child->getNext() ) {
-        if (SP_IS_BOX3D_SIDE(child)) {
-            Inkscape::XML::Node *repr = box3d_side_convert_to_path(SP_BOX3D_SIDE(child));
+    for ( SPObject *obj = box->firstChild(); obj; obj = obj->getNext() ) {
+        Box3DSide *side = dynamic_cast<Box3DSide *>(obj);
+        if (side) {
+            Inkscape::XML::Node *repr = box3d_side_convert_to_path(side);
             grepr->appendChild(repr);
         } else {
             g_warning("Non-side item encountered as child of a 3D box.");
diff --git a/src/desktop-style.cpp b/src/desktop-style.cpp
index ce8a06f29..15dc339cf 100644
--- a/src/desktop-style.cpp
+++ b/src/desktop-style.cpp
@@ -174,8 +174,10 @@ sp_desktop_set_style(SPDesktop *desktop, SPCSSAttr *css, bool change, bool write
 
         for (const GSList *i = desktop->selection->itemList(); i != NULL; i = i->next) {
             /* last used styles for 3D box faces are stored separately */
-            if (SP_IS_BOX3D_SIDE (i->data)) {
-                const char * descr  = box3d_side_axes_string(SP_BOX3D_SIDE(i->data));
+            SPObject *obj = reinterpret_cast<SPObject *>(i->data); // TODO unsafe until Selection is refactored.
+            Box3DSide *side = dynamic_cast<Box3DSide *>(obj);
+            if (side) {
+                const char * descr  = box3d_side_axes_string(side);
                 if (descr != NULL) {
                     prefs->mergeStyle(Glib::ustring("/desktop/") + descr + "/style", css_write);
                 }
diff --git a/src/display/CMakeLists.txt b/src/display/CMakeLists.txt
index 20424c845..800c4d0d4 100644
--- a/src/display/CMakeLists.txt
+++ b/src/display/CMakeLists.txt
@@ -13,6 +13,7 @@ set(display_SRC
 	drawing-group.cpp
 	drawing-image.cpp
 	drawing-item.cpp
+	drawing-pattern.cpp
 	drawing-shape.cpp
 	drawing-surface.cpp
 	drawing-text.cpp
@@ -75,6 +76,7 @@ set(display_SRC
 	drawing-group.h
 	drawing-image.h
 	drawing-item.h
+	drawing-pattern.h
 	drawing-shape.h
 	drawing-surface.h
 	drawing-text.h
diff --git a/src/display/Makefile_insert b/src/display/Makefile_insert
index abbd89a68..2355c3653 100644
--- a/src/display/Makefile_insert
+++ b/src/display/Makefile_insert
@@ -33,6 +33,8 @@ ink_common_sources += \
 	display/drawing-image.h \
 	display/drawing-item.cpp \
 	display/drawing-item.h \
+	display/drawing-pattern.cpp \
+	display/drawing-pattern.h \
 	display/drawing-shape.cpp \
 	display/drawing-shape.h \
 	display/drawing-surface.cpp \
diff --git a/src/display/drawing-item.cpp b/src/display/drawing-item.cpp
index 56507bacb..9bb81cea5 100644
--- a/src/display/drawing-item.cpp
+++ b/src/display/drawing-item.cpp
@@ -15,6 +15,7 @@
 #include "display/drawing-context.h"
 #include "display/drawing-item.h"
 #include "display/drawing-group.h"
+#include "display/drawing-pattern.h"
 #include "display/drawing-surface.h"
 #include "nr-filter.h"
 #include "preferences.h"
@@ -112,6 +113,8 @@ DrawingItem::DrawingItem(Drawing &drawing)
     , _transform(NULL)
     , _clip(NULL)
     , _mask(NULL)
+    , _fill_pattern(NULL)
+    , _stroke_pattern(NULL)
     , _filter(NULL)
     , _user_data(NULL)
     , _cache(NULL)
@@ -166,6 +169,12 @@ DrawingItem::~DrawingItem()
     case CHILD_ROOT:
         _drawing._root = NULL;
         break;
+    case CHILD_FILL_PATTERN:
+        _parent->_fill_pattern = NULL;
+        break;
+    case CHILD_STROKE_PATTERN:
+        _parent->_stroke_pattern = NULL;
+        break;
     default: ;
     }
 
@@ -174,6 +183,8 @@ DrawingItem::~DrawingItem()
     }
     clearChildren();
     delete _transform;
+    delete _stroke_pattern;
+    delete _fill_pattern;
     delete _clip;
     delete _mask;
     delete _filter;
@@ -368,6 +379,34 @@ DrawingItem::setMask(DrawingItem *item)
     _markForUpdate(STATE_ALL, true);
 }
 
+void
+DrawingItem::setFillPattern(DrawingPattern *pattern)
+{
+    _markForRendering();
+    delete _fill_pattern;
+    _fill_pattern = pattern;
+    if (pattern) {
+        pattern->_parent = this;
+        assert(pattern->_child_type == CHILD_ORPHAN);
+        pattern->_child_type = CHILD_FILL_PATTERN;
+    }
+    _markForUpdate(STATE_ALL, true);
+}
+
+void
+DrawingItem::setStrokePattern(DrawingPattern *pattern)
+{
+    _markForRendering();
+    delete _stroke_pattern;
+    _stroke_pattern = pattern;
+    if (pattern) {
+        pattern->_parent = this;
+        assert(pattern->_child_type == CHILD_ORPHAN);
+        pattern->_child_type = CHILD_STROKE_PATTERN;
+    }
+    _markForUpdate(STATE_ALL, true);
+}
+
 /// Move this item to the given place in the Z order of siblings.
 /// Does nothing if the item has no parent.
 void
@@ -532,6 +571,12 @@ DrawingItem::update(Geom::IntRect const &area, UpdateContext const &ctx, unsigne
     if (to_update & STATE_RENDER) {
         // now that we know drawbox, dirty the corresponding rect on canvas
         // unless filtered, groups do not need to render by themselves, only their members
+        if (_fill_pattern) {
+            _fill_pattern->update(area, child_ctx, flags, reset);
+        }
+        if (_stroke_pattern) {
+            _stroke_pattern->update(area, child_ctx, flags, reset);
+        }
         if (!is_drawing_group(this) || (_filter && render_filters)) {
             _markForRendering();
         }
@@ -970,7 +1015,7 @@ DrawingItem::_setStyleCommon(SPStyle *&_style, SPStyle *style)
     if (_style) sp_style_unref(_style);
     _style = style;
 
-    if (style->filter.set && style->getFilter()) {
+    if (style && style->filter.set && style->getFilter()) {
         if (!_filter) {
             int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter()));
             _filter = new Inkscape::Filters::Filter(primitives);
diff --git a/src/display/drawing-item.h b/src/display/drawing-item.h
index dda5cd6ac..9b399e6e3 100644
--- a/src/display/drawing-item.h
+++ b/src/display/drawing-item.h
@@ -28,6 +28,7 @@ class Drawing;
 class DrawingCache;
 class DrawingContext;
 class DrawingItem;
+class DrawingPattern;
 
 namespace Filters {
 
@@ -114,6 +115,8 @@ public:
     void setTransform(Geom::Affine const &trans);
     void setClip(DrawingItem *item);
     void setMask(DrawingItem *item);
+    void setFillPattern(DrawingPattern *pattern);
+    void setStrokePattern(DrawingPattern *pattern);
     void setZOrder(unsigned z);
     void setItemBounds(Geom::OptRect const &bounds);
     void setFilterBounds(Geom::OptRect const &bounds);
@@ -135,8 +138,8 @@ protected:
         CHILD_CLIP = 2, // referenced by _clip member of parent
         CHILD_MASK = 3, // referenced by _mask member of parent
         CHILD_ROOT = 4, // root item of _drawing
-        CHILD_FILL_PATTERN = 5, // not yet implemented: referenced by fill pattern of parent
-        CHILD_STROKE_PATTERN = 6 // not yet implemented: referenced by stroke pattern of parent
+        CHILD_FILL_PATTERN = 5, // referenced by fill pattern of parent
+        CHILD_STROKE_PATTERN = 6 // referenced by stroke pattern of parent
     };
     enum RenderResult {
         RENDER_OK = 0,
@@ -185,6 +188,8 @@ protected:
 
     DrawingItem *_clip;
     DrawingItem *_mask;
+    DrawingPattern *_fill_pattern;
+    DrawingPattern *_stroke_pattern;
     Inkscape::Filters::Filter *_filter;
     void *_user_data; ///< Used to associate DrawingItems with SPItems that created them
     DrawingCache *_cache;
diff --git a/src/display/drawing-pattern.cpp b/src/display/drawing-pattern.cpp
new file mode 100644
index 000000000..cf6358278
--- /dev/null
+++ b/src/display/drawing-pattern.cpp
@@ -0,0 +1,194 @@
+/**
+ * @file
+ * Canvas belonging to SVG pattern.
+ *//*
+ * Authors:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Authors
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "display/cairo-utils.h"
+#include "display/drawing-context.h"
+#include "display/drawing-pattern.h"
+#include "display/drawing-surface.h"
+
+namespace Inkscape {
+
+DrawingPattern::DrawingPattern(Drawing &drawing, bool debug)
+    : DrawingGroup(drawing)
+    , _pattern_to_user(NULL)
+    , _overflow_steps(1)
+    , _debug(debug)
+{
+}
+
+DrawingPattern::~DrawingPattern()
+{
+    delete _pattern_to_user; // delete NULL; is safe
+}
+
+void
+DrawingPattern::setPatternToUserTransform(Geom::Affine const &new_trans) {
+    Geom::Affine current;
+    if (_pattern_to_user) {
+        current = *_pattern_to_user;
+    }
+
+    if (!Geom::are_near(current, new_trans, 1e-18)) {
+        // mark the area where the object was for redraw.
+        _markForRendering();
+        if (new_trans.isIdentity()) {
+            delete _pattern_to_user; // delete NULL; is safe
+            _pattern_to_user = NULL;
+        } else {
+            _pattern_to_user = new Geom::Affine(new_trans);
+        }
+        _markForUpdate(STATE_ALL, true);
+    }
+}
+
+void
+DrawingPattern::setTileRect(Geom::Rect const &tile_rect) {
+    _tile_rect = tile_rect;
+}
+
+void
+DrawingPattern::setOverflow(Geom::Affine initial_transform, int steps, Geom::Affine step_transform) {
+    _overflow_initial_transform = initial_transform;
+    _overflow_steps = steps;
+    _overflow_step_transform = step_transform;
+}
+
+cairo_pattern_t *
+DrawingPattern::renderPattern(float opacity) {
+    bool needs_opacity = (1.0 - opacity) >= 1e-3;
+    bool visible = opacity >= 1e-3;
+
+    if (!visible) {
+        return NULL;
+    }
+
+    if (!_tile_rect || (_tile_rect->area() == 0)) {
+        return NULL;
+    }
+    Geom::Rect pattern_tile = *_tile_rect;
+
+    //TODO: If pattern_to_user set it to identity transform
+
+    // The DrawingSurface class handles the mapping from "logical space"
+    // (coordinates in the rendering) to "physical space" (surface pixels).
+    // An oversampling is done as the pattern may not pixel align with the final surface.
+    // The cairo surface is created when the DrawingContext is declared.
+    // Create drawing surface with size of pattern tile (in pattern space) but with number of pixels
+    // based on required resolution (c).
+    Inkscape::DrawingSurface pattern_surface(pattern_tile, _pattern_resolution);
+    Inkscape::DrawingContext dc(pattern_surface);
+    dc.transform( pattern_surface.drawingTransform().inverse() );
+
+    pattern_tile *= pattern_surface.drawingTransform();
+    Geom::IntRect one_tile = pattern_tile.roundOutwards();
+
+    // Render pattern.
+    if (needs_opacity) {
+        dc.pushGroup(); // this group is for pattern + opacity
+    }
+
+    if (_debug) {
+        dc.setSource(0.8, 0.0, 0.8);
+        dc.paint();
+    }
+
+    //FIXME: What flags to choose?
+    if (_overflow_steps == 1) {
+        render(dc, one_tile, RENDER_DEFAULT);
+    } else {
+        //Overflow transforms need to be transformed to the new coordinate system
+        //introduced by dc.transform( pattern_surface.drawingTransform().inverse() );
+        Geom::Affine dt = pattern_surface.drawingTransform();
+        Geom::Affine idt = pattern_surface.drawingTransform().inverse();
+        Geom::Affine initial_transform = idt * _overflow_initial_transform * dt;
+        Geom::Affine step_transform = idt * _overflow_step_transform * dt;
+
+        dc.transform(initial_transform);
+        for (int i = 0; i < _overflow_steps; i++) {
+            render(dc, one_tile, RENDER_DEFAULT);
+            dc.transform(step_transform);
+        }
+    }
+
+    //Uncomment to debug
+    // cairo_surface_t* raw = pattern_surface.raw();
+    // std::cout << "  cairo_surface (sp-pattern): "
+    //           << " width: "  << cairo_image_surface_get_width( raw )
+    //           << " height: " << cairo_image_surface_get_height( raw )
+    //           << std::endl;
+    // std::string filename = "drawing-pattern.png";
+    // cairo_surface_write_to_png( pattern_surface.raw(), filename.c_str() );
+
+    if (needs_opacity) {
+        dc.popGroupToSource(); // pop raw pattern
+        dc.paint(opacity); // apply opacity
+    }
+
+    cairo_pattern_t *cp = cairo_pattern_create_for_surface(pattern_surface.raw());
+    // Apply transformation to user space. Also compensate for oversampling.
+    if (_pattern_to_user) {
+        ink_cairo_pattern_set_matrix(cp, _pattern_to_user->inverse() * pattern_surface.drawingTransform());
+    } else {
+        ink_cairo_pattern_set_matrix(cp, pattern_surface.drawingTransform());
+    }
+
+    if (_debug) {
+        cairo_pattern_set_extend(cp, CAIRO_EXTEND_NONE);
+    } else {
+        cairo_pattern_set_extend(cp, CAIRO_EXTEND_REPEAT);
+    }
+
+    return cp;
+}
+
+unsigned
+DrawingPattern::_updateItem(Geom::IntRect const &area, UpdateContext const &ctx, unsigned flags, unsigned reset)
+{
+    UpdateContext pattern_ctx;
+
+    if (!_tile_rect || (_tile_rect->area() == 0)) {
+        return STATE_NONE;
+    }
+
+    Geom::Rect pattern_tile = *_tile_rect;
+    Geom::Coord det_ctm = ctx.ctm.descrim();
+    Geom::Coord det_ps2user = _pattern_to_user ? _pattern_to_user->descrim() : 1.0;
+    Geom::Coord det_child_transform = _child_transform ? _child_transform->descrim() : 1.0;
+    const double oversampling = 2.0;
+    double scale = det_ctm*det_ps2user*det_child_transform * oversampling;
+    //FIXME: When scale is too big (zooming in a hatch), cairo doesn't render the pattern
+    //More precisely it fails when seting pattern matrix in DrawingPattern::renderPattern
+    //Fully correct solution should make use of visible area bbox and change hach tile rect
+    //accordingly
+    if (scale > 25) {
+        scale = 25;
+    }
+    Geom::Point c(pattern_tile.dimensions()*scale*oversampling);
+    _pattern_resolution = c.ceil();
+
+    Inkscape::DrawingSurface pattern_surface(pattern_tile, _pattern_resolution);
+
+    pattern_ctx.ctm = pattern_surface.drawingTransform();
+    return DrawingGroup::_updateItem(Geom::IntRect::infinite(), pattern_ctx, flags, reset);
+}
+
+} // end namespace Inkscape
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/display/drawing-pattern.h b/src/display/drawing-pattern.h
new file mode 100644
index 000000000..7483ba067
--- /dev/null
+++ b/src/display/drawing-pattern.h
@@ -0,0 +1,87 @@
+/**
+ * @file
+ * Canvas belonging to SVG pattern.
+ *//*
+ * Authors:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Authors
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_PATTERN_H
+#define SEEN_INKSCAPE_DISPLAY_DRAWING_PATTERN_H
+
+#include "display/drawing-group.h"
+
+typedef struct _cairo_pattern cairo_pattern_t;
+class SPStyle;
+
+namespace Inkscape {
+
+/**
+ * @brief Drawing tree node used for rendering paints.
+ *
+ * DrawingPattern is used for rendering patterns and hatches.
+ *
+ * It renders it's children to a cairo_pattern_t structure that can be
+ * applied as source for fill or stroke operations.
+ */
+class DrawingPattern
+    : public DrawingGroup
+{
+public:
+    DrawingPattern(Drawing &drawing, bool debug = false);
+    ~DrawingPattern();
+
+    /**
+     * Set the transformation from pattern to user coordinate systems.
+     * @see SPPattern description for explanation of coordinate systems.
+     */
+    void setPatternToUserTransform(Geom::Affine const &new_trans);
+    /**
+     * Set the tile rect position and dimentions in content coordinate system
+     */
+    void setTileRect(Geom::Rect const &tile_rect);
+    /**
+     * Turn on overflow rendering.
+     *
+     * Overflow is implemented as repeated rendering of pattern contents. In every step
+     * a translation transform is applied.
+     */
+    void setOverflow(Geom::Affine initial_transform, int steps, Geom::Affine step_transform);
+    /**
+     * Render the pattern.
+     *
+     * Returns caito_pattern_t structure that can be set as source surface.
+     */
+    cairo_pattern_t *renderPattern(float opacity);
+protected:
+    virtual unsigned _updateItem(Geom::IntRect const &area, UpdateContext const &ctx,
+                                     unsigned flags, unsigned reset);
+
+    Geom::Affine *_pattern_to_user;
+    Geom::Affine _overflow_initial_transform;
+    Geom::Affine _overflow_step_transform;
+    int _overflow_steps;
+    Geom::OptRect _tile_rect;
+    bool _debug;
+    Geom::IntPoint _pattern_resolution;
+};
+
+bool is_drawing_group(DrawingItem *item);
+
+} // end namespace Inkscape
+
+#endif // !SEEN_INKSCAPE_DISPLAY_DRAWING_PATTERN_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/display/drawing-shape.cpp b/src/display/drawing-shape.cpp
index 88506f2b9..66160638f 100644
--- a/src/display/drawing-shape.cpp
+++ b/src/display/drawing-shape.cpp
@@ -155,7 +155,7 @@ DrawingShape::_renderFill(DrawingContext &dc)
     Inkscape::DrawingContext::Save save(dc);
     dc.transform(_ctm);
 
-    bool has_fill =  _nrstyle.prepareFill(dc, _item_bbox);
+    bool has_fill =  _nrstyle.prepareFill(dc, _item_bbox, _fill_pattern);
 
     if( has_fill ) {
         dc.path(_curve->get_pathvector());
@@ -171,7 +171,7 @@ DrawingShape::_renderStroke(DrawingContext &dc)
     Inkscape::DrawingContext::Save save(dc);
     dc.transform(_ctm);
 
-    bool has_stroke = _nrstyle.prepareStroke(dc, _item_bbox);
+    bool has_stroke = _nrstyle.prepareStroke(dc, _item_bbox, _stroke_pattern);
     has_stroke &= (_nrstyle.stroke_width != 0);
 
     if( has_stroke ) {
@@ -231,8 +231,8 @@ DrawingShape::_renderItem(DrawingContext &dc, Geom::IntRect const &area, unsigne
             // update fill and stroke paints.
             // this cannot be done during nr_arena_shape_update, because we need a Cairo context
             // to render svg:pattern
-            bool has_fill   = _nrstyle.prepareFill(dc, _item_bbox);
-            bool has_stroke = _nrstyle.prepareStroke(dc, _item_bbox);
+            bool has_fill   = _nrstyle.prepareFill(dc, _item_bbox, _fill_pattern);
+            bool has_stroke = _nrstyle.prepareStroke(dc, _item_bbox, _stroke_pattern);
             has_stroke &= (_nrstyle.stroke_width != 0);
 
             if (has_fill || has_stroke) {
diff --git a/src/display/drawing-text.cpp b/src/display/drawing-text.cpp
index 97a8c23d3..afe661b2e 100644
--- a/src/display/drawing-text.cpp
+++ b/src/display/drawing-text.cpp
@@ -448,13 +448,13 @@ unsigned DrawingText::_renderItem(DrawingContext &dc, Geom::IntRect const &/*are
         Inkscape::DrawingContext::Save save(dc);
         dc.transform(_ctm);
 
-        has_fill      = _nrstyle.prepareFill(                dc, _item_bbox);
-        has_stroke    = _nrstyle.prepareStroke(              dc, _item_bbox);
+        has_fill      = _nrstyle.prepareFill(                dc, _item_bbox, _fill_pattern);
+        has_stroke    = _nrstyle.prepareStroke(              dc, _item_bbox, _stroke_pattern);
 
         // Avoid creating patterns if not needed
         if( decorate ) {
-            has_td_fill   = _nrstyle.prepareTextDecorationFill(  dc, _item_bbox);
-            has_td_stroke = _nrstyle.prepareTextDecorationStroke(dc, _item_bbox);
+            has_td_fill   = _nrstyle.prepareTextDecorationFill(  dc, _item_bbox, _fill_pattern);
+            has_td_stroke = _nrstyle.prepareTextDecorationStroke(dc, _item_bbox, _stroke_pattern);
         }
     }
 
diff --git a/src/display/nr-style.cpp b/src/display/nr-style.cpp
index a9f101f69..96d16bf06 100644
--- a/src/display/nr-style.cpp
+++ b/src/display/nr-style.cpp
@@ -14,6 +14,7 @@
 #include "sp-paint-server.h"
 #include "display/canvas-bpath.h" // contains SPStrokeJoinType, SPStrokeCapType etc. (WTF!)
 #include "display/drawing-context.h"
+#include "display/drawing-pattern.h"
 
 void NRStyle::Paint::clear()
 {
@@ -299,13 +300,16 @@ void NRStyle::set(SPStyle *style)
     update();
 }
 
-bool NRStyle::prepareFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox)
+bool NRStyle::prepareFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern)
 {
     // update fill pattern
     if (!fill_pattern) {
         switch (fill.type) {
-        case PAINT_SERVER: {
-            fill_pattern = fill.server->pattern_new(dc.raw(), paintbox, fill.opacity);
+        case PAINT_SERVER:
+            if (pattern) {
+                fill_pattern = pattern->renderPattern(fill.opacity);
+            } else {
+                fill_pattern = fill.server->pattern_new(dc.raw(), paintbox, fill.opacity);
             } break;
         case PAINT_COLOR: {
             SPColor const &c = fill.color;
@@ -325,14 +329,20 @@ void NRStyle::applyFill(Inkscape::DrawingContext &dc)
     dc.setFillRule(fill_rule);
 }
 
-bool NRStyle::prepareTextDecorationFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox)
+bool NRStyle::prepareTextDecorationFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern)
 {
     // update text decoration pattern
     if (!text_decoration_fill_pattern) {
         switch (text_decoration_fill.type) {
-        case PAINT_SERVER: {
-        	text_decoration_fill_pattern = text_decoration_fill.server->pattern_new(dc.raw(), paintbox, text_decoration_fill.opacity);
-		} break;
+        case PAINT_SERVER:
+            if (pattern) {
+                text_decoration_fill_pattern = pattern->renderPattern(
+                        text_decoration_fill.opacity);
+            } else {
+                text_decoration_fill_pattern = text_decoration_fill.server->pattern_new(dc.raw(),
+                        paintbox, text_decoration_fill.opacity);
+            }
+            break;
         case PAINT_COLOR: {
             SPColor const &c = text_decoration_fill.color;
             text_decoration_fill_pattern = cairo_pattern_create_rgba(
@@ -351,19 +361,25 @@ void NRStyle::applyTextDecorationFill(Inkscape::DrawingContext &dc)
     // Fill rule does not matter, no intersections.
 }
 
-bool NRStyle::prepareStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox)
+bool NRStyle::prepareStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern)
 {
     if (!stroke_pattern) {
         switch (stroke.type) {
-        case PAINT_SERVER: {
-        	stroke_pattern = stroke.server->pattern_new(dc.raw(), paintbox, stroke.opacity);
-		} break;
+        case PAINT_SERVER:
+            if (pattern) {
+                stroke_pattern = pattern->renderPattern(stroke.opacity);
+            } else {
+                stroke_pattern = stroke.server->pattern_new(dc.raw(), paintbox, stroke.opacity);
+            }
+            break;
         case PAINT_COLOR: {
             SPColor const &c = stroke.color;
-            stroke_pattern = cairo_pattern_create_rgba(
-                c.v.c[0], c.v.c[1], c.v.c[2], stroke.opacity);
-            } break;
-        default: break;
+            stroke_pattern = cairo_pattern_create_rgba(c.v.c[0], c.v.c[1], c.v.c[2],
+                    stroke.opacity);
+        }
+            break;
+        default:
+            break;
         }
     }
     if (!stroke_pattern) return false;
@@ -380,13 +396,19 @@ void NRStyle::applyStroke(Inkscape::DrawingContext &dc)
     cairo_set_dash(dc.raw(), dash, n_dash, dash_offset); // fixme
 }
 
-bool NRStyle::prepareTextDecorationStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox)
+bool NRStyle::prepareTextDecorationStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern)
 {
     if (!text_decoration_stroke_pattern) {
         switch (text_decoration_stroke.type) {
-        case PAINT_SERVER: {
-        	text_decoration_stroke_pattern = text_decoration_stroke.server->pattern_new(dc.raw(), paintbox, text_decoration_stroke.opacity);
-		} break;
+        case PAINT_SERVER:
+            if (pattern) {
+                text_decoration_stroke_pattern = pattern->renderPattern(
+                        text_decoration_stroke.opacity);
+            } else {
+                text_decoration_stroke_pattern = text_decoration_stroke.server->pattern_new(
+                        dc.raw(), paintbox, text_decoration_stroke.opacity);
+            }
+            break;
         case PAINT_COLOR: {
             SPColor const &c = text_decoration_stroke.color;
             text_decoration_stroke_pattern = cairo_pattern_create_rgba(
diff --git a/src/display/nr-style.h b/src/display/nr-style.h
index 83bcb1ab7..f324fdb56 100644
--- a/src/display/nr-style.h
+++ b/src/display/nr-style.h
@@ -21,6 +21,7 @@ class SPStyle;
 
 namespace Inkscape {
 class DrawingContext;
+class DrawingPattern;
 }
 
 struct NRStyle {
@@ -28,10 +29,10 @@ struct NRStyle {
     ~NRStyle();
 
     void set(SPStyle *);
-    bool prepareFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox);
-    bool prepareStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox);
-    bool prepareTextDecorationFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox);
-    bool prepareTextDecorationStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox);
+    bool prepareFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern);
+    bool prepareStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern);
+    bool prepareTextDecorationFill(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern);
+    bool prepareTextDecorationStroke(Inkscape::DrawingContext &dc, Geom::OptRect const &paintbox, Inkscape::DrawingPattern *pattern);
     void applyFill(Inkscape::DrawingContext &dc);
     void applyStroke(Inkscape::DrawingContext &dc);
     void applyTextDecorationFill(Inkscape::DrawingContext &dc);
diff --git a/src/document.cpp b/src/document.cpp
index b50fc9575..64ccb8c36 100644
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -706,7 +706,12 @@ void SPDocument::fitToRect(Geom::Rect const &rect, bool with_margins)
     double const h = rect.height();
 
     double const old_height = getHeight().value("px");
-    Inkscape::Util::Unit const *px = unit_table.getUnit("px");
+    Inkscape::Util::Unit const *nv_units = unit_table.getUnit("px");
+    SPNamedView *nv = sp_document_namedview(this, NULL);
+    if (nv != NULL) {
+        if (nv->getAttribute("units"))
+            nv_units = unit_table.getUnit(nv->getAttribute("units"));
+    }
     
     /* in px */
     double margin_top = 0.0;
@@ -714,22 +719,16 @@ void SPDocument::fitToRect(Geom::Rect const &rect, bool with_margins)
     double margin_right = 0.0;
     double margin_bottom = 0.0;
     
-    SPNamedView *nv = sp_document_namedview(this, NULL);
-    
     if (with_margins && nv) {
         if (nv != NULL) {
-            gchar const * const units_abbr = nv->getAttribute("units");
-            Inkscape::Util::Unit const *margin_units = NULL;
-            if (units_abbr) {
-                margin_units = unit_table.getUnit(units_abbr);
-            }
-            if (!margin_units) {
-                margin_units = px;
-            }
-            margin_top = nv->getMarginLength("fit-margin-top",margin_units, px, w, h, false);
-            margin_left = nv->getMarginLength("fit-margin-left",margin_units, px, w, h, true);
-            margin_right = nv->getMarginLength("fit-margin-right",margin_units, px, w, h, true);
-            margin_bottom = nv->getMarginLength("fit-margin-bottom",margin_units, px, w, h, false);
+            margin_top = nv->getMarginLength("fit-margin-top", nv_units, unit_table.getUnit("px"), w, h, false);
+            margin_left = nv->getMarginLength("fit-margin-left", nv_units, unit_table.getUnit("px"), w, h, true);
+            margin_right = nv->getMarginLength("fit-margin-right", nv_units, unit_table.getUnit("px"), w, h, true);
+            margin_bottom = nv->getMarginLength("fit-margin-bottom", nv_units, unit_table.getUnit("px"), w, h, false);
+            margin_top = Inkscape::Util::Quantity::convert(margin_top, nv_units, "px");
+            margin_left = Inkscape::Util::Quantity::convert(margin_left, nv_units, "px");
+            margin_right = Inkscape::Util::Quantity::convert(margin_right, nv_units, "px");
+            margin_bottom = Inkscape::Util::Quantity::convert(margin_bottom, nv_units, "px");
         }
     }
     
@@ -738,8 +737,8 @@ void SPDocument::fitToRect(Geom::Rect const &rect, bool with_margins)
             rect.max() + Geom::Point(margin_right, margin_top));
     
     
-    setWidth(Inkscape::Util::Quantity(rect_with_margins.width(), px));
-    setHeight(Inkscape::Util::Quantity(rect_with_margins.height(), px));
+    setWidth(Inkscape::Util::Quantity(Inkscape::Util::Quantity::convert(rect_with_margins.width(), "px", nv_units), nv_units));
+    setHeight(Inkscape::Util::Quantity(Inkscape::Util::Quantity::convert(rect_with_margins.height(), "px", nv_units), nv_units));
 
     Geom::Translate const tr(
             Geom::Point(0, old_height - rect_with_margins.height())
diff --git a/src/extension/internal/cairo-render-context.cpp b/src/extension/internal/cairo-render-context.cpp
index c09b8e9c8..7e61cdbbb 100644
--- a/src/extension/internal/cairo-render-context.cpp
+++ b/src/extension/internal/cairo-render-context.cpp
@@ -39,6 +39,7 @@
 #include "sp-item.h"
 #include "sp-item-group.h"
 #include "style.h"
+#include "sp-hatch.h"
 #include "sp-linear-gradient.h"
 #include "sp-radial-gradient.h"
 #include "sp-pattern.h"
@@ -1130,6 +1131,82 @@ CairoRenderContext::_createPatternPainter(SPPaintServer const *const paintserver
 }
 
 cairo_pattern_t*
+CairoRenderContext::_createHatchPainter(SPPaintServer const *const paintserver, Geom::OptRect const &pbox) {
+    g_assert( SP_IS_HATCH(paintserver) );
+    SPHatch *hatch = SP_HATCH(paintserver);
+
+    g_assert(hatch->pitch() > 0);
+
+    // create drawing and group
+    Inkscape::Drawing drawing;
+    unsigned dkey = SPItem::display_key_new(1);
+
+    hatch->show(drawing, dkey, pbox);
+
+    SPHatch::RenderInfo render_info = hatch->calculateRenderInfo(dkey);
+    Geom::Rect tile_rect = render_info.tile_rect;
+
+    // Cairo requires an integer pattern surface width/height.
+    // Subtract 0.5 to prevent small rounding errors from increasing pattern size by one pixel.
+    // Multiply by SUBPIX_SCALE to allow for less than a pixel precision
+    const int subpix_scale = 10;
+    double surface_width = MAX(ceil(subpix_scale * tile_rect.width() - 0.5), 1);
+    double surface_height = MAX(ceil(subpix_scale * tile_rect.height() - 0.5), 1);
+    Geom::Affine drawing_scale = Geom::Scale(surface_width / tile_rect.width(), surface_height / tile_rect.height());
+    Geom::Affine drawing_transform = Geom::Translate(-tile_rect.min()) * drawing_scale;
+
+    Geom::Affine child_transform = render_info.child_transform;
+    child_transform *= drawing_transform;
+
+    //The rendering of hatch overflow is implemented by repeated drawing
+    //of hatch paths over one strip. Within each iteration paths are moved by pitch value.
+    //The movement progresses from right to left. This gives the same result
+    //as drawing whole strips in left-to-right order.
+    gdouble overflow_right_strip = 0.0;
+    int overflow_steps = 1;
+    Geom::Affine overflow_transform;
+    if (hatch->style->overflow.computed == SP_CSS_OVERFLOW_VISIBLE) {
+        Geom::Interval bounds = hatch->bounds();
+        overflow_right_strip = floor(bounds.max() / hatch->pitch()) * hatch->pitch();
+        overflow_steps = ceil((overflow_right_strip - bounds.min()) / hatch->pitch()) + 1;
+        overflow_transform = Geom::Translate(hatch->pitch(), 0.0);
+    }
+
+    CairoRenderContext *pattern_ctx = cloneMe(surface_width, surface_height);
+    pattern_ctx->setTransform(child_transform);
+    pattern_ctx->transform(Geom::Translate(-overflow_right_strip, 0.0));
+    pattern_ctx->pushState();
+
+    std::vector<SPHatchPath *> children;
+    hatch->hatchPaths(children);
+
+    for (int i = 0; i < overflow_steps; i++) {
+        for (std::vector<SPHatchPath *>::iterator iter = children.begin(); iter != children.end(); iter++) {
+            SPHatchPath *path = *iter;
+            _renderer->renderHatchPath(pattern_ctx, *path, dkey);
+        }
+        pattern_ctx->transform(overflow_transform);
+    }
+
+    pattern_ctx->popState();
+
+    // setup a cairo_pattern_t
+    cairo_surface_t *pattern_surface = pattern_ctx->getSurface();
+    TEST(pattern_ctx->saveAsPng("hatch.png"));
+    cairo_pattern_t *result = cairo_pattern_create_for_surface(pattern_surface);
+    cairo_pattern_set_extend(result, CAIRO_EXTEND_REPEAT);
+
+    Geom::Affine pattern_transform;
+    pattern_transform = render_info.pattern_to_user_transform.inverse() * drawing_transform;
+    ink_cairo_pattern_set_matrix(result, pattern_transform);
+
+    hatch->hide(dkey);
+
+    delete pattern_ctx;
+    return result;
+}
+
+cairo_pattern_t*
 CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const paintserver,
                                                  Geom::OptRect const &pbox, float alpha)
 {
@@ -1182,8 +1259,9 @@ CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const pain
             cairo_pattern_add_color_stop_rgba(pattern, rg->vector.stops[i].offset, rgb[0], rgb[1], rgb[2], rg->vector.stops[i].opacity * alpha);
         }
     } else if (SP_IS_PATTERN (paintserver)) {
-
         pattern = _createPatternPainter(paintserver, pbox);
+    } else if (SP_IS_HATCH (paintserver)) {
+        pattern = _createHatchPainter(paintserver, pbox);
     } else {
         return NULL;
     }
@@ -1249,26 +1327,29 @@ CairoRenderContext::_setFillStyle(SPStyle const *const style, Geom::OptRect cons
         TRACE(("merged op=%f\n", alpha));
     }
 
-    if (style->fill.isColor()) {
-        float rgb[3];
-        sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
+    SPPaintServer const *paint_server = style->getFillPaintServer();
+    if (paint_server && paint_server->isValid()) {
 
-        cairo_set_source_rgba(_cr, rgb[0], rgb[1], rgb[2], alpha);
-
-    } else if (!style->fill.set) { // unset fill is black
-        cairo_set_source_rgba(_cr, 0, 0, 0, alpha);
-
-    } else {
-        g_assert( style->fill.isPaintserver()
-                  || SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style))
-                  || SP_IS_PATTERN(SP_STYLE_FILL_SERVER(style)) );
-
-        cairo_pattern_t *pattern = _createPatternForPaintServer(SP_STYLE_FILL_SERVER(style), pbox, alpha);
+        g_assert(SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style))
+            || SP_IS_PATTERN(SP_STYLE_FILL_SERVER(style))
+            || SP_IS_HATCH(SP_STYLE_FILL_SERVER(style)));
 
+        cairo_pattern_t *pattern = _createPatternForPaintServer(paint_server, pbox, alpha);
         if (pattern) {
             cairo_set_source(_cr, pattern);
             cairo_pattern_destroy(pattern);
         }
+    } else if (style->fill.colorSet) {
+        float rgb[3];
+        sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
+
+        cairo_set_source_rgba(_cr, rgb[0], rgb[1], rgb[2], alpha);
+
+    } else { // unset fill is black
+        g_assert(!style->fill.set
+                || (paint_server && !paint_server->isValid()));
+
+        cairo_set_source_rgba(_cr, 0, 0, 0, alpha);
     }
 }
 
@@ -1279,7 +1360,7 @@ CairoRenderContext::_setStrokeStyle(SPStyle const *style, Geom::OptRect const &p
     if (_state->merge_opacity)
         alpha *= _state->opacity;
 
-    if (style->stroke.isColor()) {
+    if (style->stroke.isColor() || (style->stroke.isPaintserver() && !style->getStrokePaintServer()->isValid())) {
         float rgb[3];
         sp_color_get_rgb_floatv(&style->stroke.value.color, rgb);
 
@@ -1287,7 +1368,8 @@ CairoRenderContext::_setStrokeStyle(SPStyle const *style, Geom::OptRect const &p
     } else {
         g_assert( style->stroke.isPaintserver()
                   || SP_IS_GRADIENT(SP_STYLE_STROKE_SERVER(style))
-                  || SP_IS_PATTERN(SP_STYLE_STROKE_SERVER(style)) );
+                  || SP_IS_PATTERN(SP_STYLE_STROKE_SERVER(style))
+                  || SP_IS_HATCH(SP_STYLE_STROKE_SERVER(style)));
 
         cairo_pattern_t *pattern = _createPatternForPaintServer(SP_STYLE_STROKE_SERVER(style), pbox, alpha);
 
diff --git a/src/extension/internal/cairo-render-context.h b/src/extension/internal/cairo-render-context.h
index 8071cae36..57d155b60 100644
--- a/src/extension/internal/cairo-render-context.h
+++ b/src/extension/internal/cairo-render-context.h
@@ -204,6 +204,7 @@ protected:
     cairo_pattern_t *_createPatternForPaintServer(SPPaintServer const *const paintserver,
                                                   Geom::OptRect const &pbox, float alpha);
     cairo_pattern_t *_createPatternPainter(SPPaintServer const *const paintserver, Geom::OptRect const &pbox);
+    cairo_pattern_t *_createHatchPainter(SPPaintServer const *const paintserver, Geom::OptRect const &pbox);
 
     unsigned int _showGlyphs(cairo_t *cr, PangoFont *font, std::vector<CairoGlyphInfo> const &glyphtext, bool is_stroke);
 
diff --git a/src/extension/internal/cairo-renderer.cpp b/src/extension/internal/cairo-renderer.cpp
index 8196e34fb..a725685d4 100644
--- a/src/extension/internal/cairo-renderer.cpp
+++ b/src/extension/internal/cairo-renderer.cpp
@@ -50,6 +50,7 @@
 #include "sp-use.h"
 #include "sp-text.h"
 #include "sp-flowtext.h"
+#include "sp-hatch-path.h"
 #include "sp-image.h"
 #include "sp-symbol.h"
 #include "sp-pattern.h"
@@ -598,6 +599,21 @@ void CairoRenderer::renderItem(CairoRenderContext *ctx, SPItem *item)
     ctx->popState();
 }
 
+void CairoRenderer::renderHatchPath(CairoRenderContext *ctx, SPHatchPath const &hatchPath, unsigned key) {
+    ctx->pushState();
+    ctx->setStateForStyle(hatchPath.style);
+    ctx->transform(Geom::Translate(hatchPath.offset.computed, 0));
+
+    SPCurve *curve = hatchPath.calculateRenderCurve(key);
+    Geom::PathVector const & pathv =curve->get_pathvector();
+    if (!pathv.empty()) {
+        ctx->renderPathVector(pathv, hatchPath.style, Geom::OptRect());
+    }
+
+    curve->unref();
+    ctx->popState();
+}
+
 bool
 CairoRenderer::setupDocument(CairoRenderContext *ctx, SPDocument *doc, bool pageBoundingBox, float bleedmargin_px, SPItem *base)
 {
diff --git a/src/extension/internal/cairo-renderer.h b/src/extension/internal/cairo-renderer.h
index cfef6bdea..abc0447d8 100644
--- a/src/extension/internal/cairo-renderer.h
+++ b/src/extension/internal/cairo-renderer.h
@@ -29,6 +29,7 @@
 
 class SPClipPath;
 class SPMask;
+class SPHatchPath;
 
 namespace Inkscape {
 namespace Extension {
@@ -57,6 +58,7 @@ public:
 
     /** Traverses the object tree and invokes the render methods. */
     void renderItem(CairoRenderContext *ctx, SPItem *item);
+    void renderHatchPath(CairoRenderContext *ctx, SPHatchPath const &hatchPath, unsigned key);
 };
 
 // FIXME: this should be a static method of CairoRenderer
diff --git a/src/extension/internal/cdr-input.cpp b/src/extension/internal/cdr-input.cpp
index 239c99688..3a3e2b58e 100644
--- a/src/extension/internal/cdr-input.cpp
+++ b/src/extension/internal/cdr-input.cpp
@@ -24,7 +24,21 @@
 #include <cstring>
 
 #include <libcdr/libcdr.h>
-#include <libwpd-stream/libwpd-stream.h>
+
+// TODO: Drop this check when librevenge is widespread.
+#if WITH_LIBCDR01
+  #include <librevenge-stream/librevenge-stream.h>
+
+  using librevenge::RVNGString;
+  using librevenge::RVNGFileStream;
+  using librevenge::RVNGStringVector;
+#else
+  #include <libwpd-stream/libwpd-stream.h>
+
+  typedef WPXString               RVNGString;
+  typedef WPXFileStream           RVNGFileStream;
+  typedef libcdr::CDRStringVector RVNGStringVector;
+#endif
 
 #include <gtkmm/alignment.h>
 #include <gtkmm/comboboxtext.h>
@@ -60,7 +74,7 @@ namespace Internal {
 
 class CdrImportDialog : public Gtk::Dialog {
 public:
-     CdrImportDialog(const std::vector<WPXString> &vec);
+     CdrImportDialog(const std::vector<RVNGString> &vec);
      virtual ~CdrImportDialog();
 
      bool showDialog();
@@ -86,12 +100,12 @@ private:
      class Gtk::VBox * vbox2;
      class Gtk::Widget * _previewArea;
 
-     const std::vector<WPXString> &_vec;   // Document to be imported
+     const std::vector<RVNGString> &_vec;   // Document to be imported
      unsigned _current_page;  // Current selected page
      int _preview_width, _preview_height;    // Size of the preview area
 };
 
-CdrImportDialog::CdrImportDialog(const std::vector<WPXString> &vec)
+CdrImportDialog::CdrImportDialog(const std::vector<RVNGString> &vec)
      : _vec(vec), _current_page(1)
 {
      int num_pages = _vec.size();
@@ -216,14 +230,20 @@ void CdrImportDialog::_setPreviewPage(unsigned page)
 
 SPDocument *CdrInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * uri)
 {
-     WPXFileStream input(uri);
+     RVNGFileStream input(uri);
 
      if (!libcdr::CDRDocument::isSupported(&input)) {
           return NULL;
      }
 
-     libcdr::CDRStringVector output;
+     RVNGStringVector output;
+#if WITH_LIBCDR01
+     librevenge::RVNGSVGDrawingGenerator generator(output, "svg");
+
+     if (!libcdr::CDRDocument::parse(&input, &generator)) {
+#else
      if (!libcdr::CDRDocument::generateSVG(&input, output)) {
+#endif
           return NULL;
      }
 
@@ -231,9 +251,9 @@ SPDocument *CdrInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
           return NULL;
      }
 
-     std::vector<WPXString> tmpSVGOutput;
+     std::vector<RVNGString> tmpSVGOutput;
      for (unsigned i=0; i<output.size(); ++i) {
-          WPXString tmpString("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
+          RVNGString tmpString("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
           tmpString.append(output[i]);
           tmpSVGOutput.push_back(tmpString);
      }
diff --git a/src/extension/internal/pdfinput/pdf-input.cpp b/src/extension/internal/pdfinput/pdf-input.cpp
index b2bf61321..c8a7feabf 100644
--- a/src/extension/internal/pdfinput/pdf-input.cpp
+++ b/src/extension/internal/pdfinput/pdf-input.cpp
@@ -647,7 +647,31 @@ PdfInput::open(::Inkscape::Extension::Input * /*mod*/, const gchar * uri) {
 
     // Initialize the globalParams variable for poppler
     if (!globalParams) {
+#ifdef ENABLE_OSX_APP_LOCATIONS
+        //
+        // data files for poppler are not relocatable (loaded from 
+        // path defined at build time). This fails to work with relocatable
+        // application bundles for OS X. 
+        //
+        // Workaround: 
+        // 1. define $POPPLER_DATADIR env variable in app launcher script
+        // 2. pass custom $POPPLER_DATADIR via poppler's GlobalParams()
+        //
+        // relevant poppler commit:
+        // <http://cgit.freedesktop.org/poppler/poppler/commit/?id=869584a84eed507775ff1c3183fe484c14b6f77b>
+        //
+        // FIXES: Inkscape bug #956282, #1264793
+        // TODO: report RFE upstream (full relocation support for OS X packaging)
+        //
+        gchar const *poppler_datadir = g_getenv("POPPLER_DATADIR");
+        if (poppler_datadir != NULL) {
+            globalParams = new GlobalParams(poppler_datadir);
+        } else {
+            globalParams = new GlobalParams();
+        }
+#else
         globalParams = new GlobalParams();
+#endif // ENABLE_OSX_APP_LOCATIONS
     }
     // poppler does not use glib g_open. So on win32 we must use unicode call. code was copied from glib gstdio.c
 #ifndef WIN32
diff --git a/src/extension/internal/pdfinput/pdf-parser.cpp b/src/extension/internal/pdfinput/pdf-parser.cpp
index c5f03e5aa..0b7dc7905 100644
--- a/src/extension/internal/pdfinput/pdf-parser.cpp
+++ b/src/extension/internal/pdfinput/pdf-parser.cpp
@@ -247,30 +247,74 @@ PdfOperator PdfParser::opTab[] = {
 
 #define numOps (sizeof(opTab) / sizeof(PdfOperator))
 
+namespace {
+
+GfxPatch blankPatch()
+{
+    GfxPatch patch;
+    memset(&patch, 0, sizeof(patch)); // quick-n-dirty
+    return patch;
+}
+
+} // namespace
+
 //------------------------------------------------------------------------
-// PdfParser
+// ClipHistoryEntry
 //------------------------------------------------------------------------
 
-PdfParser::PdfParser(XRef *xrefA, Inkscape::Extension::Internal::SvgBuilder *builderA,
-                     int /*pageNum*/, int rotate, Dict *resDict,
-                     PDFRectangle *box, PDFRectangle *cropBox)
-{
-  xref = xrefA;
-  subPage = gFalse;
-  printCommands = false;
+class ClipHistoryEntry {
+public:
+
+    ClipHistoryEntry(GfxPath *clipPath = NULL, GfxClipType clipType = clipNormal);
+    virtual ~ClipHistoryEntry();
+
+    // Manipulate clip path stack
+    ClipHistoryEntry *save();
+    ClipHistoryEntry *restore();
+    GBool hasSaves() { return saved != NULL; }
+    void setClip(GfxPath *newClipPath, GfxClipType newClipType = clipNormal);
+    GfxPath *getClipPath() { return clipPath; }
+    GfxClipType getClipType() { return clipType; }
 
-  // start the resource stack
-  res = new GfxResources(xref, resDict, NULL);
+private:
 
-  // initialize
-  state = new GfxState(72.0, 72.0, box, rotate, gTrue);
-  clipHistory = new ClipHistoryEntry();
+    ClipHistoryEntry *saved;    // next clip path on stack
+        
+    GfxPath *clipPath;        // used as the path to be filled for an 'sh' operator
+    GfxClipType clipType;
+
+    ClipHistoryEntry(ClipHistoryEntry *other);
+};
+
+//------------------------------------------------------------------------
+// PdfParser
+//------------------------------------------------------------------------
+
+PdfParser::PdfParser(XRef *xrefA,
+		     Inkscape::Extension::Internal::SvgBuilder *builderA,
+                     int /*pageNum*/,
+		     int rotate,
+		     Dict *resDict,
+                     PDFRectangle *box,
+		     PDFRectangle *cropBox) :
+    xref(xrefA),
+    builder(builderA),
+    subPage(gFalse),
+    printCommands(false),
+    res(new GfxResources(xref, resDict, NULL)), // start the resource stack
+    state(new GfxState(72.0, 72.0, box, rotate, gTrue)),
+    fontChanged(gFalse),
+    clip(clipNone),
+    ignoreUndef(0),
+    baseMatrix(),
+    formDepth(0),
+    parser(NULL),
+    colorDeltas(),
+    maxDepths(),
+    clipHistory(new ClipHistoryEntry()),
+    operatorHistory(NULL)
+{
   setDefaultApproximationPrecision();
-  fontChanged = gFalse;
-  clip = clipNone;
-  ignoreUndef = 0;
-  operatorHistory = NULL;
-  builder = builderA;
   builder->setDocumentSize(Inkscape::Util::Quantity::convert(state->getPageWidth(), "pt", "px"),
                            Inkscape::Util::Quantity::convert(state->getPageHeight(), "pt", "px"));
 
@@ -306,50 +350,62 @@ PdfParser::PdfParser(XRef *xrefA, Inkscape::Extension::Internal::SvgBuilder *bui
   pushOperator("startPage");
 }
 
-PdfParser::PdfParser(XRef *xrefA, Inkscape::Extension::Internal::SvgBuilder *builderA,
-                     Dict *resDict, PDFRectangle *box) {
-
-  int i;
-  parser = NULL;
-
-  xref = xrefA;
-  subPage = gTrue;
-  printCommands = false;
-
-  // start the resource stack
-  res = new GfxResources(xref, resDict, NULL);
-
-  // initialize
-  operatorHistory = NULL;
-  builder = builderA;
-  state = new GfxState(72, 72, box, 0, gFalse);
-  clipHistory = new ClipHistoryEntry();
+PdfParser::PdfParser(XRef *xrefA,
+		     Inkscape::Extension::Internal::SvgBuilder *builderA,
+                     Dict *resDict,
+		     PDFRectangle *box) :
+    xref(xrefA),
+    builder(builderA),
+    subPage(gTrue),
+    printCommands(false),
+    res(new GfxResources(xref, resDict, NULL)), // start the resource stack
+    state(new GfxState(72, 72, box, 0, gFalse)),
+    fontChanged(gFalse),
+    clip(clipNone),
+    ignoreUndef(0),
+    baseMatrix(),
+    formDepth(0),
+    parser(NULL),
+    colorDeltas(),
+    maxDepths(),
+    clipHistory(new ClipHistoryEntry()),
+    operatorHistory(NULL)
+{
   setDefaultApproximationPrecision();
   
-  fontChanged = gFalse;
-  clip = clipNone;
-  ignoreUndef = 0;
-  for (i = 0; i < 6; ++i) {
+  for (int i = 0; i < 6; ++i) {
     baseMatrix[i] = state->getCTM()[i];
   }
   formDepth = 0;
 }
 
 PdfParser::~PdfParser() {
-  while (state->hasSaves()) {
+  while(operatorHistory) {
+    OpHistoryEntry *tmp = operatorHistory->next;
+    delete operatorHistory;
+    operatorHistory = tmp;
+  }
+
+  while (state && state->hasSaves()) {
     restoreState();
   }
+
   if (!subPage) {
     //out->endPage();
   }
+
   while (res) {
     popResources();
   }
+
   if (state) {
     delete state;
+    state = NULL;
   }
+
   if (clipHistory) {
     delete clipHistory;
+    clipHistory = NULL;
   }
 }
 
@@ -460,7 +516,8 @@ void PdfParser::go(GBool /*topLevel*/)
   }
 }
 
-void PdfParser::pushOperator(const char *name) {
+void PdfParser::pushOperator(const char *name)
+{
     OpHistoryEntry *newEntry = new OpHistoryEntry;
     newEntry->name = name;
     newEntry->state = NULL;
@@ -2086,13 +2143,19 @@ void PdfParser::doPatchMeshShFill(GfxPatchMeshShading *shading) {
 }
 
 void PdfParser::fillPatch(GfxPatch *patch, int nComps, int depth) {
-  GfxPatch patch00, patch01, patch10, patch11;
+  GfxPatch patch00 = blankPatch();
+  GfxPatch patch01 = blankPatch();
+  GfxPatch patch10 = blankPatch();
+  GfxPatch patch11 = blankPatch();
 #ifdef POPPLER_NEW_GFXPATCH
-  GfxColor color;
+  GfxColor color = {{0}};
 #endif
-  double xx[4][8], yy[4][8];
-  double xxm, yym;
-  double patchColorDelta = colorDeltas[pdfPatchMeshShading-1];
+  double xx[4][8];
+  double yy[4][8];
+  double xxm;
+  double yym;
+  double patchColorDelta = colorDeltas[pdfPatchMeshShading - 1];
+
   int i;
 
   for (i = 0; i < nComps; ++i) {
@@ -3463,9 +3526,7 @@ void PdfParser::popResources() {
 }
 
 void PdfParser::setDefaultApproximationPrecision() {
-  int i;
-
-  for (i = 1; i <= pdfNumShadingTypes; ++i) {
+  for (int i = 1; i <= pdfNumShadingTypes; ++i) {
     setApproximationPrecision(i, defaultShadingColorDelta, defaultShadingMaxDepth);
   }
 }
@@ -3484,19 +3545,18 @@ void PdfParser::setApproximationPrecision(int shadingType, double colorDelta,
 // ClipHistoryEntry
 //------------------------------------------------------------------------
 
-ClipHistoryEntry::ClipHistoryEntry(GfxPath *clipPathA, GfxClipType clipTypeA) {
-    if (clipPathA) {
-        clipPath = clipPathA->copy();
-    } else {
-        clipPath = NULL;
-    }
-    clipType = clipTypeA;
-    saved = NULL;
+ClipHistoryEntry::ClipHistoryEntry(GfxPath *clipPathA, GfxClipType clipTypeA) :
+  saved(NULL),
+  clipPath((clipPathA) ? clipPathA->copy() : NULL),
+  clipType(clipTypeA)
+{
 }
 
-ClipHistoryEntry::~ClipHistoryEntry() {
+ClipHistoryEntry::~ClipHistoryEntry()
+{
     if (clipPath) {
         delete clipPath;
+	clipPath = NULL;
     }
 }
 
@@ -3510,6 +3570,7 @@ void ClipHistoryEntry::setClip(GfxPath *clipPathA, GfxClipType clipTypeA) {
         clipType = clipTypeA;
     } else {
         clipPath = NULL;
+	clipType = clipNormal;
     }
 }
 
@@ -3526,7 +3587,7 @@ ClipHistoryEntry *ClipHistoryEntry::restore() {
     if (saved) {
         oldEntry = saved;
         saved = NULL;
-        delete this;
+        delete this; // TODO really should avoid deleting from inside.
     } else {
         oldEntry = this;
     }
@@ -3540,6 +3601,7 @@ ClipHistoryEntry::ClipHistoryEntry(ClipHistoryEntry *other) {
         this->clipType = other->clipType;
     } else {
         this->clipPath = NULL;
+	this->clipType = clipNormal;
     }
     saved = NULL;
 }
diff --git a/src/extension/internal/pdfinput/pdf-parser.h b/src/extension/internal/pdfinput/pdf-parser.h
index a63d669c7..e28fecc2e 100644
--- a/src/extension/internal/pdfinput/pdf-parser.h
+++ b/src/extension/internal/pdfinput/pdf-parser.h
@@ -58,6 +58,8 @@ class AnnotBorderStyle;
 
 class PdfParser;
 
+class ClipHistoryEntry;
+
 //------------------------------------------------------------------------
 
 #ifndef GFX_H
@@ -101,34 +103,6 @@ struct OpHistoryEntry {
 };
 
 //------------------------------------------------------------------------
-// ClipHistoryEntry
-//------------------------------------------------------------------------
-
-class ClipHistoryEntry {
-public:
-
-    ClipHistoryEntry(GfxPath *clipPath=NULL, GfxClipType clipType=clipNormal);
-    virtual ~ClipHistoryEntry();
-
-    // Manipulate clip path stack
-    ClipHistoryEntry *save();
-    ClipHistoryEntry *restore();
-    GBool hasSaves() { return saved != NULL; }
-    void setClip(GfxPath *newClipPath, GfxClipType newClipType=clipNormal);
-    GfxPath *getClipPath() { return clipPath; }
-    GfxClipType getClipType() { return clipType; }
-
-private:
-
-    ClipHistoryEntry *saved;    // next clip path on stack
-        
-    GfxPath *clipPath;        // used as the path to be filled for an 'sh' operator
-    GfxClipType clipType;
-
-    ClipHistoryEntry(ClipHistoryEntry *other);
-};
-
-//------------------------------------------------------------------------
 // PdfParser
 //------------------------------------------------------------------------
 
diff --git a/src/extension/internal/vsd-input.cpp b/src/extension/internal/vsd-input.cpp
index 302a3a6f9..9f9bf2651 100644
--- a/src/extension/internal/vsd-input.cpp
+++ b/src/extension/internal/vsd-input.cpp
@@ -24,7 +24,22 @@
 #include <cstring>
 
 #include <libvisio/libvisio.h>
-#include <libwpd-stream/libwpd-stream.h>
+
+// TODO: Drop this check when librevenge is widespread.
+#if WITH_LIBVISIO01
+  #include <librevenge-stream/librevenge-stream.h>
+
+  using librevenge::RVNGString;
+  using librevenge::RVNGFileStream;
+  using librevenge::RVNGStringVector;
+#else
+  #include <libwpd-stream/libwpd-stream.h>
+
+  typedef WPXString                 RVNGString;
+  typedef WPXFileStream             RVNGFileStream;
+  typedef libvisio::VSDStringVector RVNGStringVector;
+#endif
+
 
 #include <gtkmm/alignment.h>
 #include <gtkmm/comboboxtext.h>
@@ -59,7 +74,7 @@ namespace Internal {
 
 class VsdImportDialog : public Gtk::Dialog {
 public:
-     VsdImportDialog(const std::vector<WPXString> &vec);
+     VsdImportDialog(const std::vector<RVNGString> &vec);
      virtual ~VsdImportDialog();
 
      bool showDialog();
@@ -85,12 +100,12 @@ private:
      class Gtk::VBox * vbox2;
      class Gtk::Widget * _previewArea;
 
-     const std::vector<WPXString> &_vec;   // Document to be imported
+     const std::vector<RVNGString> &_vec;   // Document to be imported
      unsigned _current_page;  // Current selected page
      int _preview_width, _preview_height;    // Size of the preview area
 };
 
-VsdImportDialog::VsdImportDialog(const std::vector<WPXString> &vec)
+VsdImportDialog::VsdImportDialog(const std::vector<RVNGString> &vec)
      : _vec(vec), _current_page(1)
 {
      int num_pages = _vec.size();
@@ -215,14 +230,20 @@ void VsdImportDialog::_setPreviewPage(unsigned page)
 
 SPDocument *VsdInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * uri)
 {
-     WPXFileStream input(uri);
+     RVNGFileStream input(uri);
 
      if (!libvisio::VisioDocument::isSupported(&input)) {
           return NULL;
      }
 
-     libvisio::VSDStringVector output;
+     RVNGStringVector output;
+#if WITH_LIBVISIO01
+     librevenge::RVNGSVGDrawingGenerator generator(output, "svg");
+
+     if (!libvisio::VisioDocument::parse(&input, &generator)) {
+#else
      if (!libvisio::VisioDocument::generateSVG(&input, output)) {
+#endif
           return NULL;
      }
 
@@ -230,9 +251,9 @@ SPDocument *VsdInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
           return NULL;
      }
 
-     std::vector<WPXString> tmpSVGOutput;
+     std::vector<RVNGString> tmpSVGOutput;
      for (unsigned i=0; i<output.size(); ++i) {
-          WPXString tmpString("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
+          RVNGString tmpString("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
           tmpString.append(output[i]);
           tmpSVGOutput.push_back(tmpString);
      }
diff --git a/src/extension/internal/wpg-input.cpp b/src/extension/internal/wpg-input.cpp
index 14ff3ec77..12d86a99a 100644
--- a/src/extension/internal/wpg-input.cpp
+++ b/src/extension/internal/wpg-input.cpp
@@ -52,16 +52,24 @@
 #include "util/units.h"
 #include <cstring>
 
-// Take a guess and fallback to 0.1.x if no configure has run
-#if !defined(WITH_LIBWPG01) && !defined(WITH_LIBWPG02)
-#define WITH_LIBWPG01 1
+// Take a guess and fallback to 0.2.x if no configure has run
+#if !defined(WITH_LIBWPG03) && !defined(WITH_LIBWPG02)
+#define WITH_LIBWPG02 1
 #endif
 
 #include "libwpg/libwpg.h"
-#if WITH_LIBWPG01
-#include "libwpg/WPGStreamImplementation.h"
-#elif WITH_LIBWPG02
-#include "libwpd-stream/libwpd-stream.h"
+#if WITH_LIBWPG03
+  #include <librevenge-stream/librevenge-stream.h>
+
+  using librevenge::RVNGString;
+  using librevenge::RVNGFileStream;
+  using librevenge::RVNGInputStream;
+#else
+  #include "libwpd-stream/libwpd-stream.h"
+
+  typedef WPXString               RVNGString;
+  typedef WPXFileStream           RVNGFileStream;
+  typedef WPXInputStream          RVNGInputStream;
 #endif
 
 using namespace libwpg;
@@ -73,17 +81,15 @@ namespace Internal {
 
 SPDocument *WpgInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * uri)
 {
-#if WITH_LIBWPG01
-    WPXInputStream* input = new libwpg::WPGFileStream(uri);
-#elif WITH_LIBWPG02
-    WPXInputStream* input = new WPXFileStream(uri);
-#endif
+    RVNGInputStream* input = new RVNGFileStream(uri);
+#if WITH_LIBWPG03
+    if (input->isStructured()) {
+        RVNGInputStream* olestream = input->getSubStreamByName("PerfectOffice_MAIN");
+#else
     if (input->isOLEStream()) {
-#if WITH_LIBWPG01
-        WPXInputStream* olestream = input->getDocumentOLEStream();
-#elif WITH_LIBWPG02
-        WPXInputStream* olestream = input->getDocumentOLEStream("PerfectOffice_MAIN");
+        RVNGInputStream* olestream = input->getDocumentOLEStream("PerfectOffice_MAIN");
 #endif
+
         if (olestream) {
             delete input;
             input = olestream;
@@ -98,15 +104,24 @@ SPDocument *WpgInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
         return NULL;
     }
 
-#if WITH_LIBWPG01
-    libwpg::WPGString output;
-#elif WITH_LIBWPG02
-    WPXString output;
-#endif
+#if WITH_LIBWPG03
+    librevenge::RVNGStringVector vec;
+    librevenge::RVNGSVGDrawingGenerator generator(vec, "");
+
+    if (!libwpg::WPGraphics::parse(input, &generator) || vec.empty() || vec[0].empty()) {
+        delete input;
+        return NULL;
+    }
+
+    RVNGString output("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
+    output.append(vec[0]);
+#else
+    RVNGString output;
     if (!libwpg::WPGraphics::generateSVG(input, output)) {
         delete input;
         return NULL;
     }
+#endif
 
     //printf("I've got a doc: \n%s", painter.document.c_str());
 
diff --git a/src/extension/param/color.cpp b/src/extension/param/color.cpp
index 0a2598c56..5bd70359f 100644
--- a/src/extension/param/color.cpp
+++ b/src/extension/param/color.cpp
@@ -59,9 +59,10 @@ guint32 ParamColor::set( guint32 in, SPDocument * /*doc*/, Inkscape::XML::Node *
     return _value;
 }
 
-ParamColor::ParamColor (const gchar * name, const gchar * guitext, const gchar * desc, const Parameter::_scope_t scope, bool gui_hidden, const gchar * gui_tip, Inkscape::Extension::Extension * ext, Inkscape::XML::Node * xml) :
-    Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext),
-    _changeSignal(0)
+ParamColor::ParamColor(const gchar *name, const gchar *guitext, const gchar *desc, const Parameter::_scope_t scope,
+                       bool gui_hidden, const gchar *gui_tip, Inkscape::Extension::Extension *ext,
+                       Inkscape::XML::Node *xml)
+    : Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext), _value(0), _changeSignal(0)
 {
     const char * defaulthex = NULL;
     if (xml->firstChild() != NULL)
@@ -75,7 +76,8 @@ ParamColor::ParamColor (const gchar * name, const gchar * guitext, const gchar *
     if (!paramval.empty())
         defaulthex = paramval.data();
 
-    _value = atoi(defaulthex);
+    if (defaulthex)
+        _value = atoi(defaulthex);
 }
 
 void ParamColor::string(std::string &string) const
@@ -87,7 +89,7 @@ void ParamColor::string(std::string &string) const
 
 Gtk::Widget *ParamColor::get_widget( SPDocument * /*doc*/, Inkscape::XML::Node * /*node*/, sigc::signal<void> * changeSignal )
 {
-	if (_gui_hidden) return NULL;
+    if (_gui_hidden) return NULL;
 
     _changeSignal = new sigc::signal<void>(*changeSignal);
     Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox(false, 4));
diff --git a/src/extension/param/enum.cpp b/src/extension/param/enum.cpp
index bb50c06e1..74b2a75ad 100644
--- a/src/extension/param/enum.cpp
+++ b/src/extension/param/enum.cpp
@@ -41,8 +41,8 @@ namespace Extension {
 class enumentry {
 public:
     enumentry (Glib::ustring &val, Glib::ustring &text) :
-    	value(val),
-    	guitext(text)
+        value(val),
+        guitext(text)
     {}
 
     Glib::ustring value;
@@ -50,16 +50,19 @@ public:
 };
 
 
-ParamComboBox::ParamComboBox (const gchar * name, const gchar * guitext, const gchar * desc, const Parameter::_scope_t scope, bool gui_hidden, const gchar * gui_tip, Inkscape::Extension::Extension * ext, Inkscape::XML::Node * xml) :
-    Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext), _indent(0)
+ParamComboBox::ParamComboBox(const gchar *name, const gchar *guitext, const gchar *desc,
+                             const Parameter::_scope_t scope, bool gui_hidden, const gchar *gui_tip,
+                             Inkscape::Extension::Extension *ext, Inkscape::XML::Node *xml)
+    : Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext)
+    , _value(NULL)
+    , _indent(0)
+    , choices(NULL)
 {
-    choices = NULL;
-    _value = NULL;
+    const char *xmlval = NULL; // the value stored in XML
 
-    // Read XML tree to add enumeration items:
-    // printf("Extension Constructor: ");
     if (xml != NULL) {
-    	for (Inkscape::XML::Node *node = xml->firstChild(); node; node = node->next()) {
+        // Read XML tree to add enumeration items:
+        for (Inkscape::XML::Node *node = xml->firstChild(); node; node = node->next()) {
             char const * chname = node->name();
             if (!strcmp(chname, INKSCAPE_EXTENSION_NS "item") || !strcmp(chname, INKSCAPE_EXTENSION_NS "_item")) {
                 Glib::ustring newguitext, newvalue;
@@ -69,8 +72,8 @@ ParamComboBox::ParamComboBox (const gchar * name, const gchar * guitext, const g
                 }
                 if (contents != NULL) {
                     // don't translate when 'item' but do translate when '_item'
-                	// NOTE: internal extensions use build_from_mem and don't need _item but
-                	//       still need to include if are to be localized
+                    // NOTE: internal extensions use build_from_mem and don't need _item but
+                    //       still need to include if are to be localized
                     if (!strcmp(chname, INKSCAPE_EXTENSION_NS "_item")) {
                         if (node->attribute("msgctxt") != NULL) {
                             newguitext =  g_dpgettext2(NULL, node->attribute("msgctxt"), contents);
@@ -95,30 +98,28 @@ ParamComboBox::ParamComboBox (const gchar * name, const gchar * guitext, const g
                 }
             }
         }
-    }
-
-    // Initialize _value with the default value from xml
-    // for simplicity : default to the contents of the first xml-child
-    const char * defaultval = NULL;
-    if (xml->firstChild() && xml->firstChild()->firstChild()) {
-        defaultval = xml->firstChild()->attribute("value");
-    }
+    
+        // Initialize _value with the default value from xml
+        // for simplicity : default to the contents of the first xml-child
+        if (xml->firstChild() && xml->firstChild()->firstChild()) {
+            xmlval = xml->firstChild()->attribute("value");
+        }
 
-    const char * indent = xml->attribute("indent");
-    if (indent != NULL) {
-        _indent = atoi(indent) * 12;
+        const char *indent = xml->attribute("indent");
+        if (indent != NULL) {
+            _indent = atoi(indent) * 12;
+        }
     }
 
     gchar * pref_name = this->pref_name();
     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
-    Glib::ustring paramval = prefs->getString(extension_pref_root + pref_name);
+    Glib::ustring paramval = prefs ? prefs->getString(extension_pref_root + pref_name) : "";
     g_free(pref_name);
 
     if (!paramval.empty()) {
-        defaultval = paramval.data();
-    }
-    if (defaultval != NULL) {
-        _value = g_strdup(defaultval);
+        _value = g_strdup(paramval.data());
+    } else if (xmlval) {
+        _value = g_strdup(xmlval);
     }
 }
 
diff --git a/src/filters/blend.cpp b/src/filters/blend.cpp
index fd5a9871e..ca1d5bf96 100644
--- a/src/filters/blend.cpp
+++ b/src/filters/blend.cpp
@@ -183,6 +183,8 @@ void SPFeBlend::update(SPCtx *ctx, guint flags) {
 
     /* Unlike normal in, in2 is required attribute. Make sure, we can call
      * it by some name. */
+    /* This may not be true.... see issue at 
+     * http://www.w3.org/TR/filter-effects/#feBlendElement (but it doesn't hurt). */
     if (this->in2 == Inkscape::Filters::NR_FILTER_SLOT_NOT_SET ||
         this->in2 == Inkscape::Filters::NR_FILTER_UNNAMED_SLOT)
     {
@@ -206,26 +208,30 @@ Inkscape::XML::Node* SPFeBlend::write(Inkscape::XML::Document *doc, Inkscape::XM
         repr = doc->createElement("svg:feBlend");
     }
 
-    gchar const *out_name = sp_filter_name_for_image(parent, this->in2);
+    gchar const *in2_name = sp_filter_name_for_image(parent, this->in2);
 
-    if (out_name) {
-        repr->setAttribute("in2", out_name);
-    } else {
+    if( !in2_name ) {
+
+        // This code is very similar to sp_filter_primtive_name_previous_out()
         SPObject *i = parent->children;
 
+        // Find previous filter primitive
         while (i && i->next != this) {
         	i = i->next;
         }
 
-        SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
-        out_name = sp_filter_name_for_image(parent, i_prim->image_out);
-        repr->setAttribute("in2", out_name);
-
-        if (!out_name) {
-            g_warning("Unable to set in2 for feBlend");
+        if( i ) {
+            SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
+            in2_name = sp_filter_name_for_image(parent, i_prim->image_out);
         }
     }
 
+    if (in2_name) {
+        repr->setAttribute("in2", in2_name);
+    } else {
+        g_warning("Unable to set in2 for feBlend");
+    }
+
     char const *mode;
     switch(this->blend_mode) {
         case Inkscape::Filters::BLEND_NORMAL:
diff --git a/src/filters/composite.cpp b/src/filters/composite.cpp
index 257292f12..e600b6d20 100644
--- a/src/filters/composite.cpp
+++ b/src/filters/composite.cpp
@@ -205,6 +205,8 @@ void SPFeComposite::update(SPCtx *ctx, guint flags) {
 
     /* Unlike normal in, in2 is required attribute. Make sure, we can call
      * it by some name. */
+    /* This may not be true.... see issue at 
+     * http://www.w3.org/TR/filter-effects/#feBlendElement (but it doesn't hurt). */
     if (this->in2 == Inkscape::Filters::NR_FILTER_SLOT_NOT_SET ||
         this->in2 == Inkscape::Filters::NR_FILTER_UNNAMED_SLOT)
     {
@@ -228,26 +230,30 @@ Inkscape::XML::Node* SPFeComposite::write(Inkscape::XML::Document *doc, Inkscape
         repr = doc->createElement("svg:feComposite");
     }
 
-    gchar const *out_name = sp_filter_name_for_image(parent, this->in2);
+    gchar const *in2_name = sp_filter_name_for_image(parent, this->in2);
 
-    if (out_name) {
-        repr->setAttribute("in2", out_name);
-    } else {
+    if( !in2_name ) {
+
+        // This code is very similar to sp_filter_primitive_name_previous_out()
         SPObject *i = parent->children;
 
+        // Find previous filter primitive
         while (i && i->next != this) {
         	i = i->next;
         }
 
-        SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
-        out_name = sp_filter_name_for_image(parent, i_prim->image_out);
-        repr->setAttribute("in2", out_name);
-
-        if (!out_name) {
-            g_warning("Unable to set in2 for feComposite");
+        if( i ) {
+            SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
+            in2_name = sp_filter_name_for_image(parent, i_prim->image_out);
         }
     }
 
+    if (in2_name) {
+        repr->setAttribute("in2", in2_name);
+    } else {
+        g_warning("Unable to set in2 for feComposite");
+    }
+
     char const *comp_op;
 
     switch (this->composite_operator) {
diff --git a/src/filters/displacementmap.cpp b/src/filters/displacementmap.cpp
index 473e4913f..7dedfc031 100644
--- a/src/filters/displacementmap.cpp
+++ b/src/filters/displacementmap.cpp
@@ -202,25 +202,30 @@ Inkscape::XML::Node* SPFeDisplacementMap::write(Inkscape::XML::Document *doc, In
         repr = doc->createElement("svg:feDisplacementMap");
     }
 
-    gchar const *out_name = sp_filter_name_for_image(parent, this->in2);
-    if (out_name) {
-        repr->setAttribute("in2", out_name);
-    } else {
+    gchar const *in2_name = sp_filter_name_for_image(parent, this->in2);
+
+    if( !in2_name ) {
+
+        // This code is very similar to sp_filter_primtive_name_previous_out()
         SPObject *i = parent->children;
 
+        // Find previous filter primitive
         while (i && i->next != this) {
         	i = i->next;
         }
 
-        SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
-        out_name = sp_filter_name_for_image(parent, i_prim->image_out);
-        repr->setAttribute("in2", out_name);
-
-        if (!out_name) {
-            g_warning("Unable to set in2 for feDisplacementMap");
+        if( i ) {
+            SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
+            in2_name = sp_filter_name_for_image(parent, i_prim->image_out);
         }
     }
 
+    if (in2_name) {
+        repr->setAttribute("in2", in2_name);
+    } else {
+        g_warning("Unable to set in2 for feDisplacementMap");
+    }
+
     sp_repr_set_svg_double(repr, "scale", this->scale);
     repr->setAttribute("xChannelSelector",
                        get_channelselector_name(this->xChannelSelector));
diff --git a/src/libnrtype/FontFactory.h b/src/libnrtype/FontFactory.h
index 46df0181a..bd5a4460c 100644
--- a/src/libnrtype/FontFactory.h
+++ b/src/libnrtype/FontFactory.h
@@ -21,7 +21,7 @@
 
 #include <pango/pango.h>
 #include "nr-type-primitives.h"
-#include "../style.h"
+#include "style.h"
 
 /* Freetype */
 #ifdef USE_PANGO_WIN32
diff --git a/src/live_effects/lpe-vonkoch.cpp b/src/live_effects/lpe-vonkoch.cpp
index 7c1913076..b52816c87 100644
--- a/src/live_effects/lpe-vonkoch.cpp
+++ b/src/live_effects/lpe-vonkoch.cpp
@@ -132,8 +132,8 @@ LPEVonKoch::doEffect_path (std::vector<Geom::Path> const & path_in)
     int path_in_complexity = 0;
     for (unsigned k = 0; k < path_in.size(); k++){
             path_in_complexity+=path_in[k].size();
-    }    
-    double complexity = std::pow(transforms.size(),nbgenerations)*path_in_complexity;
+    }
+    double complexity = std::pow(transforms.size(), nbgenerations) * path_in_complexity;
     if (drawall.get_value()){
         int k = transforms.size();
         if(k>1){
@@ -141,8 +141,6 @@ LPEVonKoch::doEffect_path (std::vector<Geom::Path> const & path_in)
         }else{
             complexity = nbgenerations*k*path_in_complexity;
         }
-    }else{
-        complexity = std::pow(transforms.size(),nbgenerations)*path_in_complexity;
     }
     if (complexity > double(maxComplexity)){
         g_warning("VonKoch lpe's output too complex. Effect bypassed.");
diff --git a/src/object-snapper.cpp b/src/object-snapper.cpp
index 9ff6df3bf..2b29814b0 100644
--- a/src/object-snapper.cpp
+++ b/src/object-snapper.cpp
@@ -289,7 +289,7 @@ void Inkscape::ObjectSnapper::_snapNodes(IntermSnapResults &isr,
     for (std::vector<SnapCandidatePoint>::const_iterator k = _points_to_snap_to->begin(); k != _points_to_snap_to->end(); ++k) {
         if (_allowSourceToSnapToTarget(p.getSourceType(), (*k).getTargetType(), strict_snapping)) {
             Geom::Point target_pt = (*k).getPoint();
-            Geom::Coord dist = Geom::infinity();
+            Geom::Coord dist = Geom::L2(target_pt - p.getPoint()); // Default: free (unconstrained) snapping
             if (!c.isUndefined()) {
                 // We're snapping to nodes along a constraint only, so find out if this node
                 // is at the constraint, while allowing for a small margin
@@ -299,9 +299,6 @@ void Inkscape::ObjectSnapper::_snapNodes(IntermSnapResults &isr,
                     continue;
                 }
                 dist = Geom::L2(target_pt - p_proj_on_constraint);
-            } else {
-                // Free (unconstrained) snapping
-                dist = Geom::L2(target_pt - p.getPoint());
             }
 
             if (dist < getSnapperTolerance() && dist < s.getSnapDistance()) {
diff --git a/src/path-chemistry.cpp b/src/path-chemistry.cpp
index a72601276..fe241381f 100644
--- a/src/path-chemistry.cpp
+++ b/src/path-chemistry.cpp
@@ -79,6 +79,7 @@ sp_selected_path_combine(SPDesktop *desktop)
 
     items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position);
     items = g_slist_reverse(items);
+    assert(items); // cannot be NULL because of list length check at top of function
 
     // remember the position, id, transform and style of the topmost path, they will be assigned to the combined one
     gint position = 0;
diff --git a/src/path-prefix.h b/src/path-prefix.h
index 6ef0ccbe9..7042d5124 100644
--- a/src/path-prefix.h
+++ b/src/path-prefix.h
@@ -66,23 +66,23 @@
 #    define CREATE_PALETTESDIR    WIN32_DATADIR("create\\swatches")
 #    define CREATE_PATTERNSDIR    WIN32_DATADIR("create\\patterns\\vector")
 #  elif defined ENABLE_OSX_APP_LOCATIONS
-#    define INKSCAPE_APPICONDIR   "Contents/Resources/pixmaps"
-#    define INKSCAPE_ATTRRELDIR   "Contents/Resources/attributes"
-#    define INKSCAPE_BINDDIR      "Contents/Resources/bind"
-#    define INKSCAPE_EXAMPLESDIR  "Contents/Resources/examples"
-#    define INKSCAPE_EXTENSIONDIR "Contents/Resources/extensions"
-#    define INKSCAPE_FILTERDIR    "Contents/Resources/filters"
-#    define INKSCAPE_GRADIENTSDIR "Contents/Resources/gradients"
-#    define INKSCAPE_KEYSDIR      "Contents/Resources/keys"
-#    define INKSCAPE_PIXMAPDIR    "Contents/Resources/icons"
-#    define INKSCAPE_MARKERSDIR   "Contents/Resources/markers"
-#    define INKSCAPE_PALETTESDIR  "Contents/Resources/palettes"
-#    define INKSCAPE_PATTERNSDIR  "Contents/Resources/patterns"
-#    define INKSCAPE_SCREENSDIR   "Contents/Resources/screens"
-#    define INKSCAPE_SYMBOLSDIR   "Contents/Resources/symbols"
-#    define INKSCAPE_TUTORIALSDIR "Contents/Resources/tutorials"
-#    define INKSCAPE_TEMPLATESDIR "Contents/Resources/templates"
-#    define INKSCAPE_UIDIR        "Contents/Resources/ui"
+#    define INKSCAPE_APPICONDIR   "Contents/Resources/share/pixmaps"
+#    define INKSCAPE_ATTRRELDIR   "Contents/Resources/share/inkscape/attributes"
+#    define INKSCAPE_BINDDIR      "Contents/Resources/share/inkscape/bind"
+#    define INKSCAPE_EXAMPLESDIR  "Contents/Resources/share/inkscape/examples"
+#    define INKSCAPE_EXTENSIONDIR "Contents/Resources/share/inkscape/extensions"
+#    define INKSCAPE_FILTERDIR    "Contents/Resources/share/inkscape/filters"
+#    define INKSCAPE_GRADIENTSDIR "Contents/Resources/share/inkscape/gradients"
+#    define INKSCAPE_KEYSDIR      "Contents/Resources/share/inkscape/keys"
+#    define INKSCAPE_PIXMAPDIR    "Contents/Resources/share/inkscape/icons"
+#    define INKSCAPE_MARKERSDIR   "Contents/Resources/share/inkscape/markers"
+#    define INKSCAPE_PALETTESDIR  "Contents/Resources/share/inkscape/palettes"
+#    define INKSCAPE_PATTERNSDIR  "Contents/Resources/share/inkscape/patterns"
+#    define INKSCAPE_SCREENSDIR   "Contents/Resources/share/inkscape/screens"
+#    define INKSCAPE_SYMBOLSDIR   "Contents/Resources/share/inkscape/symbols"
+#    define INKSCAPE_TUTORIALSDIR "Contents/Resources/share/inkscape/tutorials"
+#    define INKSCAPE_TEMPLATESDIR "Contents/Resources/share/inkscape/templates"
+#    define INKSCAPE_UIDIR        "Contents/Resources/share/inkscape/ui"
 //CREATE V0.1 support
 #    define CREATE_GRADIENTSDIR  "/Library/Application Support/create/gradients/gimp"
 #    define CREATE_PALETTESDIR   "/Library/Application Support/create/swatches"
diff --git a/src/sp-hatch-path.cpp b/src/sp-hatch-path.cpp
new file mode 100644
index 000000000..f7138fac2
--- /dev/null
+++ b/src/sp-hatch-path.cpp
@@ -0,0 +1,331 @@
+/** @file
+ * SVG <hatchPath> implementation
+ *//*
+ * Author:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Tomasz Boczkowski
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <cstring>
+#include <string>
+#include <2geom/path.h>
+#include <2geom/transforms.h>
+
+#include "svg/svg.h"
+#include "display/cairo-utils.h"
+#include "display/curve.h"
+#include "display/drawing-context.h"
+#include "display/drawing-surface.h"
+#include "display/drawing.h"
+#include "display/drawing-shape.h"
+#include "helper/geom.h"
+#include "attributes.h"
+#include "document-private.h"
+#include "uri.h"
+#include "style.h"
+#include "sp-hatch-path.h"
+#include "svg/css-ostringstream.h"
+#include "xml/repr.h"
+
+#include "sp-factory.h"
+
+namespace {
+SPObject* createHatchPath() {
+    return new SPHatchPath();
+}
+
+bool hatchRegistered = SPFactory::instance().registerObject("svg:hatchPath", createHatchPath);
+}
+
+SPHatchPath::SPHatchPath()
+    : _curve(NULL)
+    , _continuous(false)
+{
+    offset.unset();
+}
+
+SPHatchPath::~SPHatchPath() {
+}
+
+void SPHatchPath::setCurve(SPCurve *new_curve, bool owner) {
+    if (_curve) {
+        _curve = _curve->unref();
+    }
+
+    if (new_curve) {
+        if (owner) {
+            _curve = new_curve->ref();
+        } else {
+            _curve = new_curve->copy();
+        }
+    }
+
+    this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+void SPHatchPath::build(SPDocument* doc, Inkscape::XML::Node* repr) {
+    SPObject::build(doc, repr);
+
+    this->readAttr("d");
+    this->readAttr("offset");
+    this->readAttr( "style" );
+
+    style->fill.setNone();
+}
+
+void SPHatchPath::release() {
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        delete iter->arenaitem;
+        iter->arenaitem = NULL;
+    }
+
+    SPObject::release();
+}
+
+void SPHatchPath::set(unsigned int key, const gchar* value) {
+    switch (key) {
+    case SP_ATTR_D:
+        if (value) {
+            Geom::PathVector pv;
+            _readHatchPathVector(value, pv, _continuous);
+            SPCurve *curve = new SPCurve(pv);
+
+            if (curve) {
+                this->setCurve(curve, true);
+                curve->unref();
+            }
+        } else {
+            this->setCurve(NULL, true);
+        }
+
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_OFFSET:
+        offset.readOrUnset(value);
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    default:
+        if (SP_ATTRIBUTE_IS_CSS(key)) {
+            sp_style_read_from_object(this->style, this);
+            requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
+        } else {
+            SPObject::set(key, value);
+        }
+        break;
+    }
+}
+
+
+void SPHatchPath::update(SPCtx* ctx, unsigned int flags) {
+
+    if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+        flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B;
+    }
+
+    if (flags & (SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+        if (this->style->stroke_width.unit == SP_CSS_UNIT_PERCENT) {
+            //TODO: Check specification
+
+            SPItemCtx *ictx = (SPItemCtx *) ctx;
+            double const aw = 1.0 / ictx->i2vp.descrim();
+            this->style->stroke_width.computed = this->style->stroke_width.value * aw;
+
+            for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+                iter->arenaitem->setStyle(this->style);
+            }
+        }
+    }
+
+    if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_PARENT_MODIFIED_FLAG)) {
+        for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+            _updateView(*iter);
+        }
+    }
+}
+
+bool SPHatchPath::isValid() const {
+    if (_curve && (_repeatLength() <= 0)) {
+        return false;
+    }
+    return true;
+}
+
+Inkscape::DrawingItem *SPHatchPath::show(Inkscape::Drawing &drawing, unsigned int key, Geom::OptInterval extents) {
+    Inkscape::DrawingShape *s = new Inkscape::DrawingShape(drawing);
+    _display.push_front(View(s, key));
+    _display.front().extents = extents;
+
+    _updateView(_display.front());
+
+    return s;
+}
+
+void SPHatchPath::hide(unsigned int key) {
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            delete iter->arenaitem;
+            _display.erase(iter);
+            return;
+        }
+    }
+
+    g_assert_not_reached();
+}
+
+void SPHatchPath::setStripExtents(unsigned int key, Geom::OptInterval const &extents) {
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            iter->extents = extents;
+            break;
+        }
+    }
+}
+
+Geom::Interval SPHatchPath::bounds() const {
+    Geom::OptRect bbox;
+    Geom::Interval result;
+
+    Geom::Affine transform = Geom::Translate(offset.computed, 0);
+    if (!this->_curve) {
+        SPCurve test_curve;
+        test_curve.moveto(Geom::Point(0, 0));
+        test_curve.moveto(Geom::Point(0, 1));
+        bbox = bounds_exact_transformed(test_curve.get_pathvector(), transform);
+    } else {
+        bbox = bounds_exact_transformed(this->_curve->get_pathvector(), transform);
+    }
+
+    gdouble stroke_width = style->stroke_width.computed;
+    result.setMin(bbox->left() - stroke_width / 2);
+    result.setMax(bbox->right() + stroke_width / 2);
+    return result;
+}
+
+SPCurve *SPHatchPath::calculateRenderCurve(unsigned key) const {
+    for (ConstViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            return _calculateRenderCurve(*iter);
+        }
+    }
+    g_assert_not_reached();
+    return NULL;
+}
+
+gdouble SPHatchPath::_repeatLength() const {
+    if (!_curve) {
+        return 0;
+    }
+
+    if (!_curve->last_point()) {
+        return 0;
+    }
+
+    return _curve->last_point()->y();
+}
+
+void SPHatchPath::_updateView(View &view) {
+    SPCurve *calculated_curve = _calculateRenderCurve(view);
+
+    Geom::Affine offset_transform = Geom::Translate(offset.computed, 0);
+    view.arenaitem->setTransform(offset_transform);
+    style->fill.setNone();
+    view.arenaitem->setStyle(this->style);
+    view.arenaitem->setPath(calculated_curve);
+
+    calculated_curve->unref();
+}
+
+SPCurve *SPHatchPath::_calculateRenderCurve(View const &view) const {
+    SPCurve *calculated_curve = new SPCurve;
+
+    if (!view.extents) {
+        return calculated_curve;
+    }
+
+    if (!_curve) {
+        calculated_curve->moveto(0, view.extents->min());
+        calculated_curve->lineto(0, view.extents->max());
+        //TODO: if hatch has a dasharray defined, adjust line ends
+    } else {
+        gdouble repeatLength = _repeatLength();
+        if (repeatLength > 0) {
+            gdouble initial_y = floor(view.extents->min() / repeatLength) * repeatLength;
+            int segment_cnt = ceil((view.extents->extent()) / repeatLength) + 1;
+
+            SPCurve *segment =_curve->copy();
+            segment->transform(Geom::Translate(0, initial_y));
+
+            Geom::Affine step_transform = Geom::Translate(0, repeatLength);
+            for (int i = 0; i < segment_cnt; i++) {
+                if (_continuous) {
+                    calculated_curve->append_continuous(segment, 0.0625);
+                } else {
+                    calculated_curve->append(segment, false);
+                }
+                segment->transform(step_transform);
+            }
+
+            segment->unref();
+        }
+    }
+    return calculated_curve;
+}
+
+
+void SPHatchPath::_readHatchPathVector(char const *str, Geom::PathVector &pathv, bool &continous_join) {
+    if (!str) {
+        return;
+    }
+
+    pathv = sp_svg_read_pathv(str);
+
+    if (!pathv.empty()) {
+        continous_join = false;
+    } else {
+        Glib::ustring str2 = Glib::ustring::compose("M0,0 %1", str);
+        pathv = sp_svg_read_pathv(str2.c_str());
+        if (pathv.empty()) {
+            return;
+        }
+
+        gdouble last_point_x = pathv.back().finalPoint().x();
+        Inkscape::CSSOStringStream stream;
+        stream << last_point_x;
+        Glib::ustring str3 = Glib::ustring::compose("M%1,0 %2", stream.str(), str);
+        Geom::PathVector pathv3 = sp_svg_read_pathv(str3.c_str());
+
+        //Path can be composed of relative commands only. In this case final point
+        //coordinates would depend on first point position. If this happens, fall
+        //back to using 0,0 as first path point
+        if (pathv3.back().finalPoint().y() == pathv.back().finalPoint().y()) {
+            pathv = pathv3;
+        }
+        continous_join = true;
+    }
+}
+
+SPHatchPath::View::View(Inkscape::DrawingShape *arenaitem, int key)
+        : arenaitem(arenaitem), key(key)
+{
+}
+
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+ */
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/sp-hatch-path.h b/src/sp-hatch-path.h
new file mode 100644
index 000000000..57b3a8237
--- /dev/null
+++ b/src/sp-hatch-path.h
@@ -0,0 +1,91 @@
+/** @file
+ * SVG <hatchPath> implementation
+ *//*
+ * Author:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Tomasz Boczkowski
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_SP_HATCH_PATH_H
+#define SEEN_SP_HATCH_PATH_H
+
+#include <list>
+#include <stddef.h>
+#include <glibmm/ustring.h>
+#include <sigc++/connection.h>
+
+#include "svg/svg-length.h"
+
+namespace Inkscape {
+
+class Drawing;
+class DrawingShape;
+
+}
+
+#define SP_HATCH_PATH(obj) (dynamic_cast<SPHatchPath*>((SPObject*)obj))
+#define SP_IS_HATCH_PATH(obj) (dynamic_cast<const SPHatchPath*>((SPObject*)obj) != NULL)
+
+class SPHatchPath : public SPObject {
+public:
+    SPHatchPath();
+	virtual ~SPHatchPath();
+
+	SVGLength offset;
+
+	void setCurve(SPCurve *curve, bool owner);
+
+    bool isValid() const;
+
+    Inkscape::DrawingItem *show(Inkscape::Drawing &drawing, unsigned int key, Geom::OptInterval extents);
+    void hide(unsigned int key);
+
+	void setStripExtents(unsigned int key, Geom::OptInterval const &extents);
+	Geom::Interval bounds() const;
+
+	SPCurve *calculateRenderCurve(unsigned key) const;
+
+protected:
+	virtual void build(SPDocument* doc, Inkscape::XML::Node* repr);
+	virtual void release();
+	virtual void set(unsigned int key, const gchar* value);
+	virtual void update(SPCtx* ctx, unsigned int flags);
+
+private:
+    struct View {
+        View(Inkscape::DrawingShape *arenaitem, int key);
+        //Do not delete arenaitem in destructor.
+
+        Inkscape::DrawingShape *arenaitem;
+        Geom::OptInterval extents;
+        unsigned int key;
+    };
+    typedef std::list<SPHatchPath::View>::iterator ViewIterator;
+    typedef std::list<SPHatchPath::View>::const_iterator ConstViewIterator;
+    std::list<View> _display;
+
+    gdouble _repeatLength() const;
+    void _updateView(View &view);
+    SPCurve *_calculateRenderCurve(View const &view) const;
+
+    void _readHatchPathVector(char const *str, Geom::PathVector &pathv, bool &continous_join);
+
+    SPCurve *_curve;
+    bool _continuous;
+};
+
+#endif // SEEN_SP_HATCH_PATH_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/sp-hatch.cpp b/src/sp-hatch.cpp
new file mode 100644
index 000000000..b007fc846
--- /dev/null
+++ b/src/sp-hatch.cpp
@@ -0,0 +1,679 @@
+/** @file
+ * SVG <hatch> implementation
+ *//*
+ * Author:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Tomasz Boczkowski
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <cstring>
+#include <string>
+#include <2geom/transforms.h>
+#include <sigc++/functors/mem_fun.h>
+
+#include "svg/svg.h"
+#include "display/cairo-utils.h"
+#include "display/drawing-context.h"
+#include "display/drawing-surface.h"
+#include "display/drawing.h"
+#include "display/drawing-pattern.h"
+#include "attributes.h"
+#include "document-private.h"
+#include "uri.h"
+#include "style.h"
+#include "sp-hatch.h"
+#include "sp-hatch-path.h"
+#include "xml/repr.h"
+
+#include "sp-factory.h"
+
+namespace {
+SPObject* createHatch() {
+    return new SPHatch();
+}
+
+bool hatchRegistered = SPFactory::instance().registerObject("svg:hatch", createHatch);
+}
+
+SPHatch::SPHatch()
+        : SPPaintServer()
+{
+    this->ref = new SPHatchReference(this);
+    this->ref->changedSignal().connect(sigc::mem_fun(this, &SPHatch::_onRefChanged));
+
+    this->_hatchUnits = UNITS_OBJECTBOUNDINGBOX;
+    this->_hatchUnits_set = false;
+
+    this->_hatchContentUnits = UNITS_USERSPACEONUSE;
+    this->_hatchContentUnits_set = false;
+
+    this->_hatchTransform = Geom::identity();
+    this->_hatchTransform_set = false;
+
+    this->_x.unset();
+    this->_y.unset();
+    this->_pitch.unset();
+    this->_rotate.unset();
+}
+
+SPHatch::~SPHatch() {
+}
+
+void SPHatch::build(SPDocument* doc, Inkscape::XML::Node* repr) {
+    SPPaintServer::build(doc, repr);
+
+    this->readAttr("hatchUnits");
+    this->readAttr("hatchContentUnits");
+    this->readAttr("hatchTransform");
+    this->readAttr("x");
+    this->readAttr("y");
+    this->readAttr("pitch");
+    this->readAttr("rotate");
+    this->readAttr("xlink:href");
+    this->readAttr( "style" );
+
+    /* Register ourselves */
+    doc->addResource("hatch", this);
+}
+
+void SPHatch::release() {
+    if (this->document) {
+        // Unregister ourselves
+        this->document->removeResource("hatch", this);
+    }
+
+    std::vector<SPHatchPath *> children;
+    hatchPaths(children);
+    for (ViewIterator view_iter = _display.begin(); view_iter != _display.end(); view_iter++) {
+        for (ChildIterator child_iter = children.begin(); child_iter != children.end();
+                child_iter++) {
+            SPHatchPath *child = *child_iter;
+            child->hide(view_iter->key);
+        }
+        delete view_iter->arenaitem;
+        view_iter->arenaitem = NULL;
+    }
+
+    if (this->ref) {
+        this->_modified_connection.disconnect();
+        this->ref->detach();
+        delete this->ref;
+        this->ref = NULL;
+    }
+
+    SPPaintServer::release();
+}
+
+void SPHatch::child_added(Inkscape::XML::Node* child, Inkscape::XML::Node* ref) {
+    SPObject::child_added(child, ref);
+
+    SPHatchPath *path_child = SP_HATCH_PATH(this->document->getObjectByRepr(child));
+
+    if (path_child) {
+        for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+            Geom::OptInterval extents = _calculateStripExtents(iter->bbox);
+            Inkscape::DrawingItem *ac = path_child->show(iter->arenaitem->drawing(), iter->key, extents);
+
+            path_child->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            if (ac) {
+                iter->arenaitem->prependChild(ac);
+            }
+        }
+    }
+    //FIXME: notify all hatches that refer to this child set
+}
+
+void SPHatch::set(unsigned int key, const gchar* value) {
+    switch (key) {
+    case SP_ATTR_HATCHUNITS:
+        if (value) {
+            if (!strcmp(value, "userSpaceOnUse")) {
+                this->_hatchUnits = UNITS_USERSPACEONUSE;
+            } else {
+                this->_hatchUnits = UNITS_OBJECTBOUNDINGBOX;
+            }
+
+            this->_hatchUnits_set = true;
+        } else {
+            this->_hatchUnits_set = false;
+        }
+
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_HATCHCONTENTUNITS:
+        if (value) {
+            if (!strcmp(value, "userSpaceOnUse")) {
+                this->_hatchContentUnits = UNITS_USERSPACEONUSE;
+            } else {
+                this->_hatchContentUnits = UNITS_OBJECTBOUNDINGBOX;
+            }
+
+            this->_hatchContentUnits_set = true;
+        } else {
+            this->_hatchContentUnits_set = false;
+        }
+
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_HATCHTRANSFORM: {
+        Geom::Affine t;
+
+        if (value && sp_svg_transform_read(value, &t)) {
+            this->_hatchTransform = t;
+            this->_hatchTransform_set = true;
+        } else {
+            this->_hatchTransform = Geom::identity();
+            this->_hatchTransform_set = false;
+        }
+
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+    }
+    case SP_ATTR_X:
+        this->_x.readOrUnset(value);
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_Y:
+        this->_y.readOrUnset(value);
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_PITCH:
+        this->_pitch.readOrUnset(value);
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_ROTATE:
+        this->_rotate.readOrUnset(value);
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_XLINK_HREF:
+        if (value && this->href == value) {
+            /* Href unchanged, do nothing. */
+        } else {
+            this->href.clear();
+
+            if (value) {
+                // First, set the href field; it's only used in the "unchanged" check above.
+                this->href = value;
+                // Now do the attaching, which emits the changed signal.
+                if (value) {
+                    try {
+                        this->ref->attach(Inkscape::URI(value));
+                    } catch (Inkscape::BadURIException &e) {
+                        g_warning("%s", e.what());
+                        this->ref->detach();
+                    }
+                } else {
+                    this->ref->detach();
+                }
+            }
+        }
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+        break;
+
+    default:
+        if (SP_ATTRIBUTE_IS_CSS(key)) {
+            sp_style_read_from_object(this->style, this);
+            requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
+        } else {
+            SPPaintServer::set(key, value);
+        }
+        break;
+    }
+}
+
+bool SPHatch::_hasHatchPatchChildren(SPHatch const *hatch) {
+    for (SPObject const *child = hatch->firstChild(); child; child = child->getNext() ) {
+        if (SP_IS_HATCH_PATH(child)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void SPHatch::hatchPaths(std::vector<SPHatchPath*>& l) {
+    SPHatch *src = chase_hrefs<SPHatch>(this, sigc::ptr_fun(&_hasHatchPatchChildren));
+
+    if (src) {
+        for (SPObject *child = src->firstChild(); child; child = child->getNext()) {
+            if (SP_IS_HATCH_PATH(child)) {
+                l.push_back(SP_HATCH_PATH(child));
+            }
+        }
+    }
+}
+
+void SPHatch::hatchPaths(std::vector<SPHatchPath const*>& l) const {
+    SPHatch const *src = chase_hrefs<SPHatch const>(this, sigc::ptr_fun(&_hasHatchPatchChildren));
+
+    if (src) {
+        for (SPObject const *child = src->firstChild(); child; child = child->getNext()) {
+            if (SP_IS_HATCH_PATH(child)) {
+                l.push_back(SP_HATCH_PATH(child));
+            }
+        }
+    }
+}
+
+/* TODO: ::remove_child and ::order_changed handles - see SPPattern */
+
+
+void SPHatch::update(SPCtx* ctx, unsigned int flags) {
+    typedef std::list<SPHatch::View>::iterator ViewIterator;
+
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+    }
+
+    flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+    std::vector<SPHatchPath *> children;
+    hatchPaths(children);
+
+    for (ChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPHatchPath* child = *iter;
+
+        sp_object_ref(child, NULL);
+
+        for (ViewIterator view_iter = _display.begin(); view_iter != _display.end(); view_iter++) {
+            Geom::OptInterval strip_extents = _calculateStripExtents(view_iter->bbox);
+            child->setStripExtents(view_iter->key, strip_extents);
+        }
+
+        if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+
+            child->updateDisplay(ctx, flags);
+        }
+
+        sp_object_unref(child, NULL);
+    }
+
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        _updateView(*iter);
+    }
+}
+
+void SPHatch::modified(unsigned int flags) {
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+    }
+
+    flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+    std::vector<SPHatchPath *> children;
+    hatchPaths(children);
+
+    for (ChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPObject *child = *iter;
+
+        sp_object_ref(child, NULL);
+
+        if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+            child->emitModified(flags);
+        }
+
+        sp_object_unref(child, NULL);
+    }
+}
+
+void SPHatch::_onRefChanged(SPObject *old_ref, SPObject *ref) {
+    typedef std::list<SPHatch::View>::iterator ViewIterator;
+
+    if (old_ref) {
+        _modified_connection.disconnect();
+    }
+
+    if (SP_IS_HATCH(ref)) {
+        _modified_connection = ref->connectModified(sigc::mem_fun(this, &SPHatch::_onRefModified));
+    }
+
+    if (!_hasHatchPatchChildren(this)) {
+        SPHatch *old_shown = NULL;
+        SPHatch *new_shown = NULL;
+        std::vector<SPHatchPath *> oldhatchPaths;
+        std::vector<SPHatchPath *> newhatchPaths;
+        if (SP_IS_HATCH(old_ref)) {
+            old_shown = SP_HATCH(old_ref)->rootHatch();
+            old_shown->hatchPaths(oldhatchPaths);
+        }
+        if (SP_IS_HATCH(ref)) {
+            new_shown = SP_HATCH(ref)->rootHatch();
+            new_shown->hatchPaths(newhatchPaths);
+        }
+        if (old_shown != new_shown) {
+
+            for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+                Geom::OptInterval extents = _calculateStripExtents(iter->bbox);
+
+                for (ChildIterator child_iter = oldhatchPaths.begin(); child_iter != oldhatchPaths.end(); child_iter++) {
+                    SPHatchPath *child = *child_iter;
+                    child->hide(iter->key);
+                }
+                for (ChildIterator child_iter = newhatchPaths.begin(); child_iter != newhatchPaths.end(); child_iter++) {
+                    SPHatchPath *child = *child_iter;
+                    Inkscape::DrawingItem *cai = child->show(iter->arenaitem->drawing(), iter->key, extents);
+                    child->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+                    if (cai) {
+                        iter->arenaitem->appendChild(cai);
+                    }
+
+                }
+            }
+        }
+    }
+
+    _onRefModified(ref, 0);
+}
+
+void SPHatch::_onRefModified(SPObject */*ref*/, guint /*flags*/) {
+    requestModified(SP_OBJECT_MODIFIED_FLAG);
+    // Conditional to avoid causing infinite loop if there's a cycle in the href chain.
+}
+
+
+SPHatch *SPHatch::rootHatch() {
+    SPHatch *src = chase_hrefs<SPHatch>(this, sigc::ptr_fun(&_hasHatchPatchChildren));
+    return src ? src : this; // document is broken, we can't get to root; but at least we can return pat which is supposedly a valid hatch
+}
+
+// Access functions that look up fields up the chain of referenced hatchs and return the first one which is set
+// FIXME: all of them must use chase_hrefs as children() and rootHatch()
+
+SPHatch::HatchUnits SPHatch::hatchUnits() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_hatchUnits_set)
+            return pat_i->_hatchUnits;
+    }
+    return _hatchUnits;
+}
+
+SPHatch::HatchUnits SPHatch::hatchContentUnits() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_hatchContentUnits_set)
+            return pat_i->_hatchContentUnits;
+    }
+    return _hatchContentUnits;
+}
+
+Geom::Affine const &SPHatch::hatchTransform() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_hatchTransform_set)
+            return pat_i->_hatchTransform;
+    }
+    return _hatchTransform;
+}
+
+gdouble SPHatch::x() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_x._set)
+            return pat_i->_x.computed;
+    }
+    return 0;
+}
+
+gdouble SPHatch::y() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_y._set)
+            return pat_i->_y.computed;
+    }
+    return 0;
+}
+
+gdouble SPHatch::pitch() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_pitch._set)
+            return pat_i->_pitch.computed;
+    }
+    return 0;
+}
+
+gdouble SPHatch::rotate() const {
+    for (SPHatch const *pat_i = this; pat_i != NULL;
+            pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
+        if (pat_i->_rotate._set)
+            return pat_i->_rotate.computed;
+    }
+    return 0;
+}
+
+bool SPHatch::isValid() const {
+    double strip_pitch = pitch();
+    if (strip_pitch <= 0) {
+        return false;
+    }
+
+    std::vector<SPHatchPath const *> children;
+    hatchPaths(children);
+    if (children.empty()) {
+        return false;
+    }
+    for (ConstChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPHatchPath const *child = *iter;
+        if (!child->isValid()) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+Inkscape::DrawingPattern *SPHatch::show(Inkscape::Drawing &drawing, unsigned int key, Geom::OptRect bbox) {
+    Inkscape::DrawingPattern *ai = new Inkscape::DrawingPattern(drawing);
+    //TODO: set some debug flag to see DrawingPattern
+    _display.push_front(View(ai, key));
+    _display.front().bbox = bbox;
+
+    std::vector<SPHatchPath *> children;
+    hatchPaths(children);
+
+    Geom::OptInterval extents = _calculateStripExtents(bbox);
+    for (ChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPHatchPath *child = *iter;
+        Inkscape::DrawingItem *cai = child->show(drawing, key, extents);
+        if (cai) {
+            ai->appendChild(cai);
+        }
+    }
+
+    View& view = _display.front();
+    _updateView(view);
+
+    return ai;
+}
+
+void SPHatch::hide(unsigned int key) {
+    std::vector<SPHatchPath *> children;
+    hatchPaths(children);
+
+    for (ChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPHatchPath *child = *iter;
+        child->hide(key);
+    }
+
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            delete iter->arenaitem;
+            _display.erase(iter);
+            return;
+        }
+    }
+
+    g_assert_not_reached();
+}
+
+
+Geom::Interval SPHatch::bounds() const {
+    Geom::Interval result;
+    std::vector<SPHatchPath const *> children;
+    hatchPaths(children);
+
+    for (ConstChildIterator iter = children.begin(); iter != children.end(); iter++) {
+        SPHatchPath const *child = *iter;
+        if (result.extent() == 0) {
+            result = child->bounds();
+        } else {
+            result |= child->bounds();
+        }
+    }
+    return result;
+}
+
+SPHatch::RenderInfo SPHatch::calculateRenderInfo(unsigned key) const {
+    RenderInfo info;
+    for (ConstViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            return _calculateRenderInfo(*iter);
+        }
+    }
+    g_assert_not_reached();
+    return info;
+}
+
+void SPHatch::_updateView(View &view) {
+    RenderInfo info = _calculateRenderInfo(view);
+    //The rendering of hatch overflow is implemented by repeated drawing
+    //of hatch paths over one strip. Within each iteration paths are moved by pitch value.
+    //The movement progresses from right to left. This gives the same result
+    //as drawing whole strips in left-to-right order.
+
+
+    view.arenaitem->setChildTransform(info.child_transform);
+    view.arenaitem->setPatternToUserTransform(info.pattern_to_user_transform);
+    view.arenaitem->setTileRect(info.tile_rect);
+    view.arenaitem->setStyle(this->style);
+    view.arenaitem->setOverflow(info.overflow_initial_transform, info.overflow_steps,
+            info.overflow_step_transform);
+}
+
+SPHatch::RenderInfo SPHatch::_calculateRenderInfo(View const &view) const {
+    RenderInfo info;
+
+    Geom::OptInterval extents = _calculateStripExtents(view.bbox);
+    if (!extents) {
+        return info;
+    }
+
+    double tile_x = x();
+    double tile_y = y();
+    double tile_width = pitch();
+    double tile_height = extents->max() - extents->min();
+    double tile_rotate = rotate();
+    double tile_render_y = extents->min();
+
+    if (view.bbox && (hatchUnits() == UNITS_OBJECTBOUNDINGBOX)) {
+        tile_x *= view.bbox->width();
+        tile_y *= view.bbox->height();
+        tile_width *= view.bbox->width();
+        tile_height *= view.bbox->height();
+        tile_render_y *= view.bbox->height();
+    }
+
+    // Pattern size in hatch space
+    Geom::Rect hatch_tile = Geom::Rect::from_xywh(0, tile_render_y, tile_width, tile_height);
+    // Content to bbox
+    Geom::Affine content2ps;
+    if (view.bbox && (hatchContentUnits() == UNITS_OBJECTBOUNDINGBOX)) {
+        content2ps = Geom::Affine(view.bbox->width(), 0.0, 0.0, view.bbox->height(), 0, 0);
+    }
+
+    // Tile (hatch space) to user.
+    Geom::Affine ps2user = Geom::Translate(tile_x, tile_y) * Geom::Rotate::from_degrees(tile_rotate) * hatchTransform();
+
+    info.child_transform = content2ps;
+    info.pattern_to_user_transform = ps2user;
+    info.tile_rect = hatch_tile;
+
+    if (style->overflow.computed == SP_CSS_OVERFLOW_VISIBLE) {
+        Geom::Interval bounds = this->bounds();
+        gdouble pitch = this->pitch();
+        gdouble overflow_right_strip = floor(bounds.max() / pitch) * pitch;
+        info.overflow_steps = ceil((overflow_right_strip - bounds.min()) / pitch) + 1;
+        info.overflow_step_transform = Geom::Translate(pitch, 0.0);
+        info.overflow_initial_transform = Geom::Translate(-overflow_right_strip, 0.0);
+    } else {
+        info.overflow_steps = 1;
+    }
+
+    return info;
+}
+
+//calculates strip extents in content space
+Geom::OptInterval SPHatch::_calculateStripExtents(Geom::OptRect bbox) const {
+    if (!bbox || (bbox->area() == 0)) {
+        return Geom::OptInterval();
+    }
+
+    double tile_x = x();
+    double tile_y = y();
+    double tile_rotate = rotate();
+
+    Geom::Affine ps2user = Geom::Translate(tile_x, tile_y) * Geom::Rotate::from_degrees(tile_rotate) * hatchTransform();
+    Geom::Affine user2ps = ps2user.inverse();
+
+    Geom::Interval extents;
+    for (int i = 0; i < 4; i++) {
+        Geom::Point corner = bbox->corner(i);
+        Geom::Point corner_ps  =  corner * user2ps;
+        if (i == 0 || corner_ps.y() < extents.min()) {
+            extents.setMin(corner_ps.y());
+        }
+        if (i == 0 || corner_ps.y() > extents.max()) {
+            extents.setMax(corner_ps.y());
+        }
+    }
+
+    if (hatchUnits() == UNITS_OBJECTBOUNDINGBOX) {
+        extents /= bbox->height();
+    }
+
+    return extents;
+}
+
+cairo_pattern_t* SPHatch::pattern_new(cairo_t * /*base_ct*/, Geom::OptRect const &/*bbox*/, double /*opacity*/)
+{
+    //this code should not be used
+    //it is however required by the fact that SPPaintServer::hatch_new is pure virtual
+    return cairo_pattern_create_rgb(0.5, 0.5, 1.0);
+}
+
+void SPHatch::setBBox(unsigned int key, Geom::OptRect const &bbox) {
+    for (ViewIterator iter = _display.begin(); iter != _display.end(); iter++) {
+        if (iter->key == key) {
+            iter->bbox = bbox;
+            break;
+        }
+    }
+}
+
+SPHatch::View::View(Inkscape::DrawingPattern *arenaitem, int key)
+        : arenaitem(arenaitem), key(key)
+{
+}
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+ */
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/sp-hatch.h b/src/sp-hatch.h
new file mode 100644
index 000000000..dc6ee0add
--- /dev/null
+++ b/src/sp-hatch.h
@@ -0,0 +1,174 @@
+/** @file
+ * SVG <hatch> implementation
+ *//*
+ * Author:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 2014 Tomasz Boczkowski
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_SP_HATCH_H
+#define SEEN_SP_HATCH_H
+
+#include <list>
+#include <stddef.h>
+#include <glibmm/ustring.h>
+#include <sigc++/connection.h>
+
+#include "svg/svg-length.h"
+#include "svg/svg-angle.h"
+#include "sp-paint-server.h"
+#include "uri-references.h"
+
+class SPHatchReference;
+class SPHatchPath;
+class SPItem;
+
+namespace Inkscape {
+
+class Drawing;
+class DrawingPattern;
+
+namespace XML {
+
+class Node;
+
+}
+}
+
+#define SP_HATCH(obj) (dynamic_cast<SPHatch*>((SPObject*)obj))
+#define SP_IS_HATCH(obj) (dynamic_cast<const SPHatch*>((SPObject*)obj) != NULL)
+
+class SPHatch : public SPPaintServer {
+public:
+    enum HatchUnits {
+        UNITS_USERSPACEONUSE,
+        UNITS_OBJECTBOUNDINGBOX
+    };
+
+    struct RenderInfo {
+        Geom::Affine child_transform;
+        Geom::Affine pattern_to_user_transform;
+        Geom::Rect tile_rect;
+
+        int overflow_steps;
+        Geom::Affine overflow_step_transform;
+        Geom::Affine overflow_initial_transform;
+    };
+
+    SPHatch();
+	virtual ~SPHatch();
+
+    /* Reference (href) */
+	Glib::ustring href;
+    SPHatchReference *ref;
+
+    gdouble x() const;
+    gdouble y() const;
+    gdouble pitch() const;
+    gdouble rotate() const;
+    HatchUnits hatchUnits() const;
+    HatchUnits hatchContentUnits() const;
+    Geom::Affine const &hatchTransform() const;
+    SPHatch *rootHatch(); //TODO: const
+
+    void hatchPaths(std::vector<SPHatchPath*>& l);
+    void hatchPaths(std::vector<SPHatchPath const *>& l) const;
+
+    bool isValid() const;
+
+    Inkscape::DrawingPattern *show(Inkscape::Drawing &drawing, unsigned int key, Geom::OptRect bbox);
+    void hide(unsigned int key);
+	virtual cairo_pattern_t* pattern_new(cairo_t *ct, Geom::OptRect const &bbox, double opacity);
+
+	RenderInfo calculateRenderInfo(unsigned key) const;
+	Geom::Interval bounds() const;
+	void setBBox(unsigned int key, Geom::OptRect const &bbox);
+
+protected:
+	virtual void build(SPDocument* doc, Inkscape::XML::Node* repr);
+	virtual void release();
+	virtual void child_added(Inkscape::XML::Node* child, Inkscape::XML::Node* ref);
+	virtual void set(unsigned int key, const gchar* value);
+	virtual void update(SPCtx* ctx, unsigned int flags);
+	virtual void modified(unsigned int flags);
+
+private:
+    struct View {
+        View(Inkscape::DrawingPattern *arenaitem, int key);
+        //Do not delete arenaitem in destructor.
+
+        Inkscape::DrawingPattern *arenaitem;
+        Geom::OptRect bbox;
+        unsigned int key;
+    };
+
+    typedef std::vector<SPHatchPath *>::iterator ChildIterator;
+    typedef std::vector<SPHatchPath const *>::const_iterator ConstChildIterator;
+    typedef std::list<View>::iterator ViewIterator;
+    typedef std::list<View>::const_iterator ConstViewIterator;
+
+    static bool _hasHatchPatchChildren(SPHatch const* hatch);
+
+    void _updateView(View &view);
+    RenderInfo _calculateRenderInfo(View const &view) const;
+	Geom::OptInterval _calculateStripExtents(Geom::OptRect bbox) const;
+
+
+	/**
+	Gets called when the hatch is reattached to another <hatch>
+	*/
+	void _onRefChanged(SPObject *old_ref, SPObject *ref);
+
+	/**
+	Gets called when the referenced <hatch> is changed
+	*/
+	void _onRefModified(SPObject *ref, guint flags);
+
+    /* patternUnits and patternContentUnits attribute */
+    HatchUnits _hatchUnits : 1;
+    bool _hatchUnits_set : 1;
+    HatchUnits _hatchContentUnits : 1;
+    bool _hatchContentUnits_set : 1;
+    /* hatchTransform attribute */
+    Geom::Affine _hatchTransform;
+    bool _hatchTransform_set : 1;
+    /* Strip */
+    SVGLength _x;
+    SVGLength _y;
+    SVGLength _pitch;
+    SVGAngle _rotate;
+
+    sigc::connection _modified_connection;
+
+    std::list<View> _display;
+};
+
+
+class SPHatchReference : public Inkscape::URIReference {
+public:
+    SPHatchReference (SPObject *obj) : URIReference(obj) {}
+    SPHatch *getObject() const {
+        return reinterpret_cast<SPHatch *>(URIReference::getObject());
+    }
+
+protected:
+    virtual bool _acceptObject(SPObject *obj) const {
+        return SP_IS_HATCH (obj);
+    }
+};
+
+#endif // SEEN_SP_HATCH_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/sp-item.cpp b/src/sp-item.cpp
index c5b4b1667..967756055 100644
--- a/src/sp-item.cpp
+++ b/src/sp-item.cpp
@@ -120,6 +120,9 @@ SPItem::SPItem() : SPObject() {
     mask_ref = new SPMaskReference(this);
     mask_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(mask_ref_changed), this));
 
+    style->signal_fill_ps_changed.connect(sigc::bind(sigc::ptr_fun(fill_ps_ref_changed), this));
+    style->signal_stroke_ps_changed.connect(sigc::bind(sigc::ptr_fun(stroke_ps_ref_changed), this));
+
     avoidRef = new SPAvoidRef(this);
 }
 
@@ -465,7 +468,15 @@ void SPItem::release() {
 
     SPObject::release();
 
+    SPPaintServer *fill_ps = style->getFillPaintServer();
+    SPPaintServer *stroke_ps = style->getStrokePaintServer();
     while (item->display) {
+        if (fill_ps) {
+            fill_ps->hide(item->display->arenaitem->key());
+        }
+        if (stroke_ps) {
+            stroke_ps->hide(item->display->arenaitem->key());
+        }
         item->display = sp_item_view_list_remove(item->display, item->display);
     }
 
@@ -623,6 +634,56 @@ void SPItem::mask_ref_changed(SPObject *old_mask, SPObject *mask, SPItem *item)
     }
 }
 
+void SPItem::fill_ps_ref_changed(SPObject *old_ps, SPObject *ps, SPItem *item) {
+    SPPaintServer *old_fill_ps = SP_PAINT_SERVER(old_ps);
+    if (old_fill_ps) {
+        for (SPItemView *v =item->display; v != NULL; v = v->next) {
+            old_fill_ps->hide(v->arenaitem->key());
+        }
+    }
+
+    SPPaintServer *new_fill_ps = SP_PAINT_SERVER(ps);
+    if (new_fill_ps) {
+        Geom::OptRect bbox = item->geometricBounds();
+        for (SPItemView *v = item->display; v != NULL; v = v->next) {
+            if (!v->arenaitem->key()) {
+                v->arenaitem->setKey(SPItem::display_key_new(3));
+            }
+            Inkscape::DrawingPattern *pi = new_fill_ps->show(
+                    v->arenaitem->drawing(), v->arenaitem->key(), bbox);
+            v->arenaitem->setFillPattern(pi);
+            if (pi) {
+                new_fill_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            }
+        }
+    }
+}
+
+void SPItem::stroke_ps_ref_changed(SPObject *old_ps, SPObject *ps, SPItem *item) {
+    SPPaintServer *old_stroke_ps = SP_PAINT_SERVER(old_ps);
+    if (old_stroke_ps) {
+        for (SPItemView *v =item->display; v != NULL; v = v->next) {
+            old_stroke_ps->hide(v->arenaitem->key());
+        }
+    }
+
+    SPPaintServer *new_stroke_ps = SP_PAINT_SERVER(ps);
+    if (new_stroke_ps) {
+        Geom::OptRect bbox = item->geometricBounds();
+        for (SPItemView *v = item->display; v != NULL; v = v->next) {
+            if (!v->arenaitem->key()) {
+                v->arenaitem->setKey(SPItem::display_key_new(3));
+            }
+            Inkscape::DrawingPattern *pi = new_stroke_ps->show(
+                    v->arenaitem->drawing(), v->arenaitem->key(), bbox);
+            v->arenaitem->setStrokePattern(pi);
+            if (pi) {
+                new_stroke_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            }
+        }
+    }
+}
+
 void SPItem::update(SPCtx* /*ctx*/, guint flags) {
     SPItem *item = this;
     SPItem* object = item;
@@ -682,6 +743,10 @@ void SPItem::update(SPCtx* /*ctx*/, guint flags) {
         item->avoidRef->handleSettingChange();
 }
 
+void SPItem::modified(unsigned int /*flags*/)
+{
+}
+
 Inkscape::XML::Node* SPItem::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
     SPItem *item = this;
     SPItem* object = item;
@@ -1130,6 +1195,33 @@ Inkscape::DrawingItem *SPItem::invoke_show(Inkscape::Drawing &drawing, unsigned
             SP_MASK(mask)->sp_mask_set_bbox(mask_key, item_bbox);
             mask->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
         }
+
+        SPPaintServer *fill_ps = style->getFillPaintServer();
+        if (fill_ps) {
+            if (!display->arenaitem->key()) {
+                display->arenaitem->setKey(display_key_new(3));
+            }
+            int fill_key = display->arenaitem->key();
+
+            Inkscape::DrawingPattern *ap = fill_ps->show(drawing, fill_key, item_bbox);
+            ai->setFillPattern(ap);
+            if (ap) {
+                fill_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            }
+        }
+        SPPaintServer *stroke_ps = style->getStrokePaintServer();
+        if (stroke_ps) {
+            if (!display->arenaitem->key()) {
+                display->arenaitem->setKey(display_key_new(3));
+            }
+            int stroke_key = display->arenaitem->key();
+
+            Inkscape::DrawingPattern *ap = stroke_ps->show(drawing, stroke_key, item_bbox);
+            ai->setStrokePattern(ap);
+            if (ap) {
+                stroke_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            }
+        }
         ai->setData(this);
         ai->setItemBounds(geometricBounds());
     }
@@ -1159,6 +1251,14 @@ void SPItem::invoke_hide(unsigned key)
                 mask_ref->getObject()->sp_mask_hide(v->arenaitem->key());
                 v->arenaitem->setMask(NULL);
             }
+            SPPaintServer *fill_ps = style->getFillPaintServer();
+            if (fill_ps) {
+                fill_ps->hide(v->arenaitem->key());
+            }
+            SPPaintServer *stroke_ps = style->getStrokePaintServer();
+            if (stroke_ps) {
+                stroke_ps->hide(v->arenaitem->key());
+            }
             if (!ref) {
                 display = v->next;
             } else {
diff --git a/src/sp-item.h b/src/sp-item.h
index 1e4f5f4c6..1656a0c2b 100644
--- a/src/sp-item.h
+++ b/src/sp-item.h
@@ -34,6 +34,7 @@
 class SPClipPathReference;
 class SPMaskReference;
 class SPAvoidRef;
+class SPPattern;
 struct SPPrintContext;
 typedef unsigned int guint32;
 
@@ -252,12 +253,15 @@ private:
     static SPItemView *sp_item_view_new_prepend(SPItemView *list, SPItem *item, unsigned flags, unsigned key, Inkscape::DrawingItem *arenaitem);
     static void clip_ref_changed(SPObject *old_clip, SPObject *clip, SPItem *item);
     static void mask_ref_changed(SPObject *old_clip, SPObject *clip, SPItem *item);
+    static void fill_ps_ref_changed(SPObject *old_clip, SPObject *clip, SPItem *item);
+    static void stroke_ps_ref_changed(SPObject *old_clip, SPObject *clip, SPItem *item);
 
 public:
 	virtual void build(SPDocument *document, Inkscape::XML::Node *repr);
 	virtual void release();
 	virtual void set(unsigned int key, char const* value);
 	virtual void update(SPCtx *ctx, unsigned int flags);
+        virtual void modified(unsigned int flags);
 	virtual Inkscape::XML::Node* write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, unsigned int flags);
 
 	virtual Geom::OptRect bbox(Geom::Affine const &transform, SPItem::BBoxType type) const;
diff --git a/src/sp-lpe-item.cpp b/src/sp-lpe-item.cpp
index a2a935951..019d15162 100644
--- a/src/sp-lpe-item.cpp
+++ b/src/sp-lpe-item.cpp
@@ -702,9 +702,8 @@ SPLPEItem::apply_to_mask(SPItem *item)
 {
     SPMask *mask = item->mask_ref->getObject();
     if(mask) {
-        SPObject * mask_data = mask->firstChild();
+        SPObject *mask_data = mask->firstChild();
         SPCurve * mask_curve = NULL;
-        mask_data = mask->firstChild();
         if (SP_IS_PATH(mask_data)) {
             mask_curve = SP_PATH(mask_data)->get_original_curve();
         } else if(SP_IS_SHAPE(mask_data)) {
diff --git a/src/sp-paint-server.cpp b/src/sp-paint-server.cpp
index 77ad7a35f..ae40ad1aa 100644
--- a/src/sp-paint-server.cpp
+++ b/src/sp-paint-server.cpp
@@ -60,7 +60,25 @@ bool SPPaintServer::isSolid() const
 
 bool SPPaintServer::isValid() const
 {
-	return true;
+    return true;
+}
+
+Inkscape::DrawingPattern *SPPaintServer::show(Inkscape::Drawing &/*drawing*/, unsigned int /*key*/, Geom::OptRect /*bbox*/)
+{
+    return NULL;
+}
+
+void SPPaintServer::hide(unsigned int /*key*/)
+{
+}
+
+void SPPaintServer::setBBox(unsigned int /*key*/, Geom::OptRect const &/*bbox*/)
+{
+}
+
+cairo_pattern_t* SPPaintServer::pattern_new(cairo_t * /*ct*/, Geom::OptRect const &/*bbox*/, double /*opacity*/)
+{
+    return NULL;
 }
 
 /*
diff --git a/src/sp-paint-server.h b/src/sp-paint-server.h
index beac72af5..7f3bfcba0 100644
--- a/src/sp-paint-server.h
+++ b/src/sp-paint-server.h
@@ -15,11 +15,17 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
+#include <cairo.h>
 #include <2geom/rect.h>
+#include <sigc++/slot.h>
 #include "sp-object.h"
 
-typedef struct _cairo cairo_t;
-typedef struct _cairo_pattern cairo_pattern_t;
+namespace Inkscape {
+
+class Drawing;
+class DrawingPattern;
+
+}
 
 #define SP_PAINT_SERVER(obj) (dynamic_cast<SPPaintServer*>((SPObject*)obj))
 #define SP_IS_PAINT_SERVER(obj) (dynamic_cast<const SPPaintServer*>((SPObject*)obj) != NULL)
@@ -33,12 +39,59 @@ public:
     bool isSolid() const;
     virtual bool isValid() const;
 
-    virtual cairo_pattern_t* pattern_new(cairo_t *ct, Geom::OptRect const &bbox, double opacity) = 0;
+    //There are two ways to render a paint. The simple one is to create cairo_pattern_t structure
+    //on demand by pattern_new method. It is used for gradients. The other one is to add elements
+    //representing PaintServer in NR tree. It is used by hatches and patterns.
+    //Either pattern new or all three methods show, hide, setBBox need to be implemented
+    virtual Inkscape::DrawingPattern *show(Inkscape::Drawing &drawing, unsigned int key, Geom::OptRect bbox); // TODO check passing bbox by value. Looks suspicious.
+    virtual void hide(unsigned int key);
+    virtual void setBBox(unsigned int key, Geom::OptRect const &bbox);
+
+    virtual cairo_pattern_t* pattern_new(cairo_t *ct, Geom::OptRect const &bbox, double opacity);
 
 protected:
     bool swatch;
 };
 
+/**
+ * Returns the first of {src, src-\>ref-\>getObject(),
+ * src-\>ref-\>getObject()-\>ref-\>getObject(),...}
+ * for which \a match is true, or NULL if none found.
+ *
+ * The raison d'être of this routine is that it correctly handles cycles in the href chain (e.g., if
+ * a gradient gives itself as its href, or if each of two gradients gives the other as its href).
+ *
+ * \pre SP_IS_GRADIENT(src).
+ */
+template <class PaintServer>
+PaintServer *chase_hrefs(PaintServer *src, sigc::slot<bool, PaintServer const *> match) {
+    /* Use a pair of pointers for detecting loops: p1 advances half as fast as p2.  If there is a
+       loop, then once p1 has entered the loop, we'll detect it the next time the distance between
+       p1 and p2 is a multiple of the loop size. */
+    PaintServer *p1 = src, *p2 = src;
+    bool do1 = false;
+    for (;;) {
+        if (match(p2)) {
+            return p2;
+        }
+
+        p2 = p2->ref->getObject();
+        if (!p2) {
+            return p2;
+        }
+        if (do1) {
+            p1 = p1->ref->getObject();
+        }
+        do1 = !do1;
+
+        if ( p2 == p1 ) {
+            /* We've been here before, so return NULL to indicate that no matching gradient found
+             * in the chain. */
+            return NULL;
+        }
+    }
+}
+
 #endif // SEEN_SP_PAINT_SERVER_H
 /*
   Local Variables:
diff --git a/src/style-internal.cpp b/src/style-internal.cpp
index a55a11403..b858e5cb6 100644
--- a/src/style-internal.cpp
+++ b/src/style-internal.cpp
@@ -964,7 +964,11 @@ SPIPaint::read( gchar const *str ) {
                 if (!value.href && document) {
                     // std::cout << "  Creating value.href" << std::endl;
                     value.href = new SPPaintServerReference(document);
-                    value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((this == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style));
+                    if (this == &style->fill) {
+                        style->fill_ps_changed_connection = value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), style));
+                    } else {
+                        style->stroke_ps_changed_connection = value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), style));
+                    }
                 }
 
                 // std::cout << "uri: " << (uri?uri:"null") << std::endl;
@@ -981,7 +985,16 @@ SPIPaint::read( gchar const *str ) {
         if (streq(str, "currentColor")) {
             set = true;
             currentcolor = true;
-            setColor( style->color.value.color );
+            if (style) {
+                setColor( style->color.value.color );
+            } else {
+                // Normally an SPIPaint is part of an SPStyle and the value of 'color' is
+                // available.  SPIPaint can be used 'stand-alone' (e.g. to parse color values) in
+                // which case a value of 'currentColor' is meaningless, thus we shouldn't reach
+                // here.
+                std::cerr << "SPIPaint::read(): value is 'currentColor' but 'color' not available." << std::endl;
+                setColor( 0 );
+            }
         } else if (streq(str, "none")) {
             set = true;
             noneSet = true;
@@ -1396,11 +1409,20 @@ SPIFilter::read( gchar const *str ) {
         set = true;
 
         // Create href if not already done.
-        if (!href && style->object) {
-            href = new SPFilterReference(style->object);
-            href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style));
+        if (!href) {
+            if (style->object) {
+                href = new SPFilterReference(style->object);
+            }
+            // Do we have href now?
+            if ( href ) {
+                href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style));
+            } else {
+                std::cerr << "SPIFilter::read(): Could not allocate 'href'" << std::endl;
+                return;
+            }
         }
 
+        // We have href
         try {
             href->attach(Inkscape::URI(uri));
         } catch (Inkscape::BadURIException &e) {
diff --git a/src/style-internal.h b/src/style-internal.h
index 5a853fcef..32792827a 100644
--- a/src/style-internal.h
+++ b/src/style-internal.h
@@ -104,22 +104,45 @@ static const unsigned SP_STYLE_FLAG_IFDIFF (1 << 1);
  */
 
 /// Virtual base class for all SPStyle interal classes
-class SPIBase {
+class SPIBase
+{
 
-  public:
+public:
     SPIBase( Glib::ustring const &name, bool inherits = true )
-        : name(name), inherits(inherits), set(false), inherit(false), style_att(false), style(NULL) {};
-    virtual ~SPIBase() {};
+        : name(name),
+          inherits(inherits),
+          set(false),
+          inherit(false),
+          style_att(false),
+          style(NULL)
+    {}
+
+    virtual ~SPIBase()
+    {}
+
     virtual void read( gchar const *str ) = 0;
-    virtual void readIfUnset( gchar const *str ) { if( !set ) read( str ); }
-    virtual void readAttribute( Inkscape::XML::Node *repr ) { readIfUnset( repr->attribute( name.c_str() ) ); }
+    virtual void readIfUnset( gchar const *str ) {
+        if ( !set ) {
+            read( str );
+        }
+    }
+
+    virtual void readAttribute( Inkscape::XML::Node *repr ) {
+        readIfUnset( repr->attribute( name.c_str() ) );
+    }
+
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const = 0;
-    virtual void clear() { set = false, inherit = false; };
+    virtual void clear() {
+        set = false, inherit = false;
+    }
+
     virtual void cascade( const SPIBase* const parent ) = 0;
     virtual void merge(   const SPIBase* const parent ) = 0;
 
-    virtual void setStylePointer( SPStyle *style_in  ) { style = style_in; };
+    virtual void setStylePointer( SPStyle *style_in  ) {
+        style = style_in;
+    }
 
     // Explicit assignment operator required due to templates.
     SPIBase& operator=(const SPIBase& rhs) {
@@ -133,11 +156,16 @@ class SPIBase {
     }
 
     // Check apples being compared to apples
-    virtual bool operator==(const SPIBase& rhs) { return (name == rhs.name); };
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator==(const SPIBase& rhs) {
+        return (name == rhs.name);
+    }
+
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     Glib::ustring name;       // Make const
     unsigned inherits : 1;    // Property inherits by default from parent.
     unsigned set : 1;         // Property has been explicitly set (vs. inherited).
@@ -145,22 +173,35 @@ class SPIBase {
     unsigned style_att : 2;   // Source (attribute, style attribute, style-sheet). NOT USED YET FIX ME
 
   // To do: make private after g_asserts removed
-  public:
+public:
     SPStyle* style;       // Used by SPIPaint, SPIFilter... to find values of other properties
 };
 
 /// Float type internal to SPStyle. (Only 'stroke-miterlimit')
-class SPIFloat : public SPIBase {
-
-  public:
-    SPIFloat() : SPIBase( "anonymous_float" ), value(0.0) {};
-    SPIFloat( Glib::ustring name, float value_default  = 0.0 )
-        : SPIBase( name ), value(value_default), value_default(value_default) {};
-    virtual ~SPIFloat() {};
+class SPIFloat : public SPIBase
+{
+
+public:
+    SPIFloat()
+        : SPIBase( "anonymous_float" ),
+          value(0.0)
+    {}
+
+    SPIFloat( Glib::ustring const &name, float value_default  = 0.0 )
+        : SPIBase( name ),
+          value(value_default),
+          value_default(value_default)
+    {}
+
+    virtual ~SPIFloat() {}
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); value = value_default; };
+    virtual void clear() {
+        SPIBase::clear();
+        value = value_default;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -172,13 +213,15 @@ class SPIFloat : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     float value;
 
-  private:
+private:
     float value_default;
 };
 
@@ -214,17 +257,32 @@ static const unsigned SP_SCALE24_MAX = 0xff0000;
 /// 24 bit data type internal to SPStyle.
 // Used only for opacity, fill-opacity, stroke-opacity.
 // Opacity does not inherit but stroke-opacity and fill-opacity do. 
-class SPIScale24 : public SPIBase {
+class SPIScale24 : public SPIBase
+{
+
+public:
+    SPIScale24()
+        : SPIBase( "anonymous_scale24" ),
+          value(0)
+    {}
+
+    SPIScale24( Glib::ustring const &name, unsigned value = 0, bool inherits = true )
+        : SPIBase( name, inherits ),
+          value(value),
+          value_default(value)
+    {}
+
+    virtual ~SPIScale24()
+    {}
 
-  public:
-    SPIScale24() : SPIBase( "anonymous_scale24" ), value(0) {};
-    SPIScale24( Glib::ustring name, unsigned value = 0, bool inherits = true )
-        : SPIBase( name, inherits ), value(value), value_default(value) {};
-    virtual ~SPIScale24() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); value = value_default; };
+    virtual void clear() {
+        SPIBase::clear();
+        value = value_default;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -236,14 +294,16 @@ class SPIScale24 : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
 
   // To do: make private
-  public:
+public:
     unsigned value : 24;
 
-  private:
+private:
     unsigned value_default : 24;
 };
 
@@ -265,17 +325,37 @@ enum SPCSSUnit {
 /// Length type internal to SPStyle.
 // Needs access to 'font-size' and 'font-family' for computed values.
 // Used for 'stroke-width' 'stroke-dash-offset' ('none' not handled), text-indent
-class SPILength : public SPIBase {
+class SPILength : public SPIBase
+{
+
+public:
+    SPILength()
+        : SPIBase( "anonymous_length" ),
+          unit(SP_CSS_UNIT_NONE),
+          value(0),
+          computed(0)
+    {}
+
+    SPILength( Glib::ustring const &name, unsigned value = 0 )
+        : SPIBase( name ),
+          unit(SP_CSS_UNIT_NONE),
+          value(value),
+          computed(value),
+          value_default(value)
+    {}
+
+    virtual ~SPILength()
+    {}
 
-  public:
-    SPILength() : SPIBase( "anonymous_length" ), unit(SP_CSS_UNIT_NONE), value(0), computed(0) {};
-    SPILength( Glib::ustring name, unsigned value = 0 )
-        : SPIBase( name ), unit(SP_CSS_UNIT_NONE), value(value), computed(value), value_default(value) {};
-    virtual ~SPILength() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); unit = SP_CSS_UNIT_NONE, value = value_default; computed = value_default; };
+    virtual void clear() {
+        SPIBase::clear();
+        unit = SP_CSS_UNIT_NONE, value = value_default;
+        computed = value_default;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -286,35 +366,51 @@ class SPILength : public SPIBase {
         computed      = rhs.computed;
         value_default = rhs.value_default;
         return *this;
-    };
+    }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     unsigned unit : 4;
     float value;
     float computed;
 
-  private:
+private:
     float value_default;
 };
 
 
 /// Extended length type internal to SPStyle.
 // Used for: line-height, letter-spacing, word-spacing
-class SPILengthOrNormal : public SPILength {
+class SPILengthOrNormal : public SPILength
+{
+
+public:
+    SPILengthOrNormal()
+        : SPILength( "anonymous_length" ),
+          normal(true)
+    {}
+
+    SPILengthOrNormal( Glib::ustring const &name, unsigned value = 0 )
+        : SPILength( name, value ),
+          normal(true)
+    {}
+
+    virtual ~SPILengthOrNormal()
+    {}
 
-  public:
-    SPILengthOrNormal() : SPILength( "anonymous_length" ), normal(true) {};
-    SPILengthOrNormal( Glib::ustring name, unsigned value = 0 )
-        : SPILength( name, value ), normal(true) {};
-    virtual ~SPILengthOrNormal() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPILength::clear(); normal = true; };
+    virtual void clear() {
+        SPILength::clear();
+        normal = true;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -325,33 +421,59 @@ class SPILengthOrNormal : public SPILength {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     bool normal : 1;
 };
 
 
 /// Enum type internal to SPStyle.
 // Used for many properties. 'font-stretch' and 'font-weight' must be special cased.
-class SPIEnum : public SPIBase {
+class SPIEnum : public SPIBase
+{
 
-  public:
+public:
     SPIEnum() :
-        SPIBase( "anonymous_enum" ), enums( NULL ), value(0), computed(0) {};
-    SPIEnum( Glib::ustring const name, SPStyleEnum const *enums, unsigned value = 0, bool inherits = true ) :
-        SPIBase( name, inherits ), enums( enums ), value(value), computed(value),
-        value_default(value), computed_default(value) {};
+        SPIBase( "anonymous_enum" ),
+        enums( NULL ),
+        value(0),
+        computed(0)
+    {}
+
+    SPIEnum( Glib::ustring const &name, SPStyleEnum const *enums, unsigned value = 0, bool inherits = true ) :
+        SPIBase( name, inherits ),
+        enums( enums ),
+        value(value),
+        computed(value),
+        value_default(value),
+        computed_default(value)
+    {}
+
     // Following is needed for font-weight
-    SPIEnum( Glib::ustring name, SPStyleEnum const *enums, SPCSSFontWeight value, SPCSSFontWeight computed ) :
-        SPIBase( name ), enums( enums ), value(value), computed(computed),
-        value_default(value), computed_default(computed) {};
-    virtual ~SPIEnum() {};
+    SPIEnum( Glib::ustring const &name, SPStyleEnum const *enums, SPCSSFontWeight value, SPCSSFontWeight computed ) :
+        SPIBase( name ),
+        enums( enums ),
+        value(value),
+        computed(computed),
+        value_default(value),
+        computed_default(computed)
+    {}
+
+    virtual ~SPIEnum()
+    {}
+
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); value = value_default, computed = computed_default; };
+    virtual void clear() {
+        SPIBase::clear();
+        value = value_default, computed = computed_default;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -365,16 +487,18 @@ class SPIEnum : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     SPStyleEnum const *enums;
 
     unsigned value : 8;
     unsigned computed: 8;
 
-  private:
+private:
     unsigned value_default : 8;
     unsigned computed_default: 8; // for font-weight
 };
@@ -382,20 +506,31 @@ class SPIEnum : public SPIBase {
 
 /// String type internal to SPStyle.
 // Used for 'marker', ..., 'font', 'font-family', 'inkscape-font-specification'
-class SPIString : public SPIBase {
-
-  public:
-    SPIString() :
-        SPIBase( "anonymous_string" ), value(NULL) {};
-    SPIString( Glib::ustring name, gchar const* value_default_in = NULL ) :
-        SPIBase( name ) , value(NULL) , value_default(NULL) {
-        value_default = value_default_in?g_strdup(value_default_in):NULL;
-    };
-    virtual ~SPIString() { g_free(value); g_free(value_default); };
+class SPIString : public SPIBase
+{
+
+public:
+    SPIString()
+        : SPIBase( "anonymous_string" ),
+          value(NULL)
+    {}
+
+    // TODO probably want to avoid gchar* and c-style strings.
+    SPIString( Glib::ustring const &name, gchar const* value_default_in = NULL )
+        : SPIBase( name ),
+          value(NULL),
+          value_default(value_default_in ? g_strdup(value_default_in) : NULL)
+    {}
+
+    virtual ~SPIString() {
+        g_free(value);
+        g_free(value_default);
+    }
+
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear();
+    virtual void clear(); // TODO check about value and value_default
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -403,31 +538,50 @@ class SPIString : public SPIBase {
         SPIBase::operator=(rhs);
         g_free(value);
         g_free(value_default);
-        value            = rhs.value?g_strdup(rhs.value):NULL;
-        value_default    = rhs.value_default?g_strdup(rhs.value_default):NULL;
+        value            = rhs.value ? g_strdup(rhs.value) : NULL;
+        value_default    = rhs.value_default ? g_strdup(rhs.value_default) : NULL;
         return *this;
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private, convert value to Glib::ustring
-  public:
+public:
     gchar *value;
     gchar *value_default;
 };
 
 /// Color type interal to SPStyle, FIXME Add string value to store SVG named color.
-class SPIColor : public SPIBase {
+class SPIColor : public SPIBase
+{
+
+public:
+    SPIColor()
+        : SPIBase( "anonymous_color" ),
+          currentcolor(false) {
+        value.color.set(0);
+    }
+
+    SPIColor( Glib::ustring const &name )
+        : SPIBase( name ),
+          currentcolor(false) {
+        value.color.set(0);
+    }
+
+    virtual ~SPIColor()
+    {}
 
-  public:
-    SPIColor() : SPIBase( "anonymous_color" ), currentcolor(false) { value.color.set(0); }
-    SPIColor( Glib::ustring name ) : SPIBase( name ), currentcolor(false) { value.color.set(0); }
-    virtual ~SPIColor() {}
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); value.color.set(0); }
+    virtual void clear() {
+        SPIBase::clear();
+        value.color.set(0);
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -439,13 +593,23 @@ class SPIColor : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); }
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
-    void setColor( float r, float g, float b ) { value.color.set( r, g, b ); }
-    void setColor( guint32 val ) {               value.color.set( val );     }
-    void setColor( SPColor const& color ) {      value.color = color;        }
+    void setColor( float r, float g, float b ) {
+        value.color.set( r, g, b );
+    }
+
+    void setColor( guint32 val ) {
+        value.color.set( val );
+    }
+
+    void setColor( SPColor const& color ) {
+        value.color = color;
+    }
 
-  public:
+public:
     bool currentcolor : 1;
     // FIXME: remove structure and derive SPIPaint from this class.
     struct {
@@ -459,18 +623,28 @@ class SPIColor : public SPIBase {
 #define SP_STYLE_STROKE_SERVER(s) ((const_cast<SPStyle *> (s))->getStrokePaintServer())
 
 /// Paint type internal to SPStyle.
-class SPIPaint : public SPIBase {
-
-  public:
-    SPIPaint() : SPIBase( "anonymous_paint" ), currentcolor(false), colorSet(false), noneSet(false) {
+class SPIPaint : public SPIBase
+{
+
+public:
+    SPIPaint()
+        : SPIBase( "anonymous_paint" ),
+          currentcolor(false),
+          colorSet(false),
+          noneSet(false) {
         value.href = NULL;
         clear();
-    };
-    SPIPaint( Glib::ustring name )
-        : SPIBase( name ), currentcolor(false), colorSet(false), noneSet(false) {
+    }
+
+    SPIPaint( Glib::ustring const &name )
+        : SPIBase( name ),
+          currentcolor(false),
+          colorSet(false),
+          noneSet(false) {
         value.href = NULL;
         clear();  // Sets defaults
-    };
+    }
+
     virtual ~SPIPaint();  // Clear and delete href.
     virtual void read( gchar const *str );
     virtual void read( gchar const *str, SPStyle &style, SPDocument *document = 0);
@@ -492,24 +666,46 @@ class SPIPaint : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
+
+    bool isSameType( SPIPaint const & other ) const {
+        return (isPaintserver() == other.isPaintserver()) && (colorSet == other.colorSet) && (currentcolor == other.currentcolor);
+    }
 
-    bool isSameType( SPIPaint const & other ) const {return (isPaintserver() == other.isPaintserver()) && (colorSet == other.colorSet) && (currentcolor == other.currentcolor);}
+    bool isNoneSet() const {
+        return noneSet;
+    }
+
+    bool isNone() const {
+        return !currentcolor && !colorSet && !isPaintserver();
+    } // TODO refine
+
+    bool isColor() const {
+        return colorSet && !isPaintserver();
+    }
 
-    bool isNoneSet() const {return noneSet;}
+    bool isPaintserver() const {
+        return (value.href) ? value.href->getObject() : 0;
+    }
 
-    bool isNone() const {return !currentcolor && !colorSet && !isPaintserver();} // TODO refine
-    bool isColor() const {return colorSet && !isPaintserver();}
-    bool isPaintserver() const {return (value.href) ? value.href->getObject():0;}
+    void setColor( float r, float g, float b ) {
+        value.color.set( r, g, b ); colorSet = true;
+    }
 
-    void setColor( float r, float g, float b ) {value.color.set( r, g, b ); colorSet = true;}
-    void setColor( guint32 val ) {value.color.set( val ); colorSet = true;}
-    void setColor( SPColor const& color ) {value.color = color; colorSet = true;}
+    void setColor( guint32 val ) {
+        value.color.set( val ); colorSet = true;
+    }
 
+    void setColor( SPColor const& color ) {
+        value.color = color; colorSet = true;
+    }
 
+    void setNone() {noneSet = true; colorSet=false;}
 
   // To do: make private
-  public:
+public:
     bool currentcolor : 1;
     bool colorSet : 1;
     bool noneSet : 1;
@@ -536,11 +732,20 @@ enum SPPaintOrderLayer {
 const size_t PAINT_ORDER_LAYERS = 3;
 
 /// Paint order type internal to SPStyle
-class SPIPaintOrder : public SPIBase {
+class SPIPaintOrder : public SPIBase
+{
+
+public:
+    SPIPaintOrder()
+        : SPIBase( "paint-order" ),
+          value(NULL) {
+        this->clear();
+    }
+
+    virtual ~SPIPaintOrder() {
+        g_free( value );
+    }
 
-  public:
-    SPIPaintOrder() : SPIBase( "paint-order" ), value(NULL) { this->clear(); };
-    virtual ~SPIPaintOrder() { g_free( value ); };
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
@@ -568,11 +773,13 @@ class SPIPaintOrder : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
 
   // To do: make private
-  public:
+public:
     SPPaintOrderLayer layer[PAINT_ORDER_LAYERS];
     bool layer_set[PAINT_ORDER_LAYERS];
     gchar *value;  // Raw string
@@ -580,15 +787,25 @@ class SPIPaintOrder : public SPIBase {
 
 
 /// Filter type internal to SPStyle
-class SPIDashArray : public SPIBase {
+class SPIDashArray : public SPIBase
+{
+
+public:
+    SPIDashArray()
+        : SPIBase( "stroke-dasharray" )
+    {}  // Only one instance of SPIDashArray
+
+    virtual ~SPIDashArray()
+    {}
 
-  public:
-    SPIDashArray() : SPIBase( "stroke-dasharray" ) {};  // Only one instance of SPIDashArray
-    virtual ~SPIDashArray() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); values.clear(); };
+    virtual void clear() {
+        SPIBase::clear();
+        values.clear();
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -599,19 +816,26 @@ class SPIDashArray : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
 
   // To do: make private, change double to SVGLength
-  public:
+public:
     std::vector<double> values;
 };
 
 /// Filter type internal to SPStyle
-class SPIFilter : public SPIBase {
+class SPIFilter : public SPIBase
+{
+
+public:
+    SPIFilter()
+        : SPIBase( "filter", false ),
+          href(NULL)
+    {}
 
-  public:
-    SPIFilter() : SPIBase( "filter", false ), href(NULL) {};
     virtual ~SPIFilter();
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
@@ -627,10 +851,12 @@ class SPIFilter : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     SPFilterReference *href;
 };
 
@@ -643,16 +869,27 @@ enum {
 };
 
 /// Fontsize type internal to SPStyle (also used by libnrtype/Layout-TNG-Input.cpp).
-class SPIFontSize : public SPIBase {
+class SPIFontSize : public SPIBase
+{
+
+public:
+    SPIFontSize()
+        : SPIBase( "font-size" ) {
+        this->clear();
+    }
+
+    virtual ~SPIFontSize()
+    {}
 
-  public:
-    SPIFontSize() : SPIBase( "font-size" ) { this->clear(); };
-    virtual ~SPIFontSize() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); type = SP_FONT_SIZE_LITERAL, unit = SP_CSS_UNIT_NONE,
-                           literal = SP_CSS_FONT_SIZE_MEDIUM, value = 12.0, computed = 12.0; }
+    virtual void clear() {
+        SPIBase::clear();
+        type = SP_FONT_SIZE_LITERAL, unit = SP_CSS_UNIT_NONE,
+            literal = SP_CSS_FONT_SIZE_MEDIUM, value = 12.0, computed = 12.0;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -667,39 +904,51 @@ class SPIFontSize : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
-  public:
+public:
     static float const font_size_default;
 
   // To do: make private
-  public:
+public:
     unsigned type : 2;
     unsigned unit : 4;
     unsigned literal : 4;
     float value;
     float computed;
 
-  private:
+private:
     double relative_fraction() const;
     static float const font_size_table[];
 };
 
 
 /// Font type internal to SPStyle ('font' shorthand)
-class SPIFont : public SPIBase {
+class SPIFont : public SPIBase
+{
+
+public:
+    SPIFont()
+        : SPIBase( "font" )
+    {}
+
+    virtual ~SPIFont()
+    {}
 
-  public:
-    SPIFont() : SPIBase( "font" ) {};
-    virtual ~SPIFont() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
     virtual void clear() {
         SPIBase::clear();
-    };
-    virtual void cascade( const SPIBase* const parent ) { (void)parent; }; // Done in dependent properties
-    virtual void merge(   const SPIBase* const parent ) { (void)parent; };
+    }
+
+    virtual void cascade( const SPIBase* const /*parent*/ )
+    {} // Done in dependent properties
+
+    virtual void merge(   const SPIBase* const /*parent*/ )
+    {}
 
     SPIFont& operator=(const SPIFont& rhs) {
         SPIBase::operator=(rhs);
@@ -707,7 +956,9 @@ class SPIFont : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 };
 
 
@@ -718,16 +969,27 @@ enum {
 };
 
 /// Baseline shift type internal to SPStyle. (This is actually just like SPIFontSize)
-class SPIBaselineShift : public SPIBase {
+class SPIBaselineShift : public SPIBase
+{
+
+public:
+    SPIBaselineShift()
+        : SPIBase( "baseline-shift", false ) {
+        this->clear();
+    }
+
+    virtual ~SPIBaselineShift()
+    {}
 
-  public:
-    SPIBaselineShift() : SPIBase( "baseline-shift", false ) { this->clear(); };
-    virtual ~SPIBaselineShift() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); type=SP_BASELINE_SHIFT_LITERAL, unit=SP_CSS_UNIT_NONE,
-                           literal = SP_CSS_BASELINE_SHIFT_BASELINE, value = 0.0, computed = 0.0; }
+    virtual void clear() {
+        SPIBase::clear();
+        type=SP_BASELINE_SHIFT_LITERAL, unit=SP_CSS_UNIT_NONE,
+            literal = SP_CSS_BASELINE_SHIFT_BASELINE, value = 0.0, computed = 0.0;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -743,11 +1005,14 @@ class SPIBaselineShift : public SPIBase {
 
     // This is not used but we have it for completeness, it has not been tested.
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
+
     bool isZero() const;
 
   // To do: make private
-  public:
+public:
     unsigned type : 2;
     unsigned unit : 4;
     unsigned literal: 2;
@@ -760,15 +1025,26 @@ class SPIBaselineShift : public SPIBase {
 
 // CSS3 2.2
 /// Text decoration line type internal to SPStyle.  THIS SHOULD BE A GENERIC CLASS
-class SPITextDecorationLine : public SPIBase {
+class SPITextDecorationLine : public SPIBase
+{
+
+public:
+    SPITextDecorationLine()
+        : SPIBase( "text-decoration-line" ) {
+        this->clear();
+    }
+
+    virtual ~SPITextDecorationLine()
+    {}
 
-  public:
-    SPITextDecorationLine() : SPIBase( "text-decoration-line" ) { this->clear(); };
-    virtual ~SPITextDecorationLine() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); underline = false, overline = false, line_through = false, blink = false; }
+    virtual void clear() {
+        SPIBase::clear();
+        underline = false, overline = false, line_through = false, blink = false;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -782,10 +1058,12 @@ class SPITextDecorationLine : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     bool underline : 1;
     bool overline : 1;
     bool line_through : 1;
@@ -794,15 +1072,26 @@ class SPITextDecorationLine : public SPIBase {
 
 // CSS3 2.2
 /// Text decoration style type internal to SPStyle.  THIS SHOULD JUST BE SPIEnum!
-class SPITextDecorationStyle : public SPIBase {
+class SPITextDecorationStyle : public SPIBase
+{
+
+public:
+    SPITextDecorationStyle()
+        : SPIBase( "text-decoration-style" ) {
+        this->clear();
+    }
+
+    virtual ~SPITextDecorationStyle()
+    {}
 
-  public:
-    SPITextDecorationStyle() : SPIBase( "text-decoration-style" ) { this->clear(); };
-    virtual ~SPITextDecorationStyle() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
-    virtual void clear() { SPIBase::clear(); solid = true, isdouble = false, dotted = false, dashed = false, wavy = false; }
+    virtual void clear() {
+        SPIBase::clear();
+        solid = true, isdouble = false, dotted = false, dashed = false, wavy = false;
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -817,10 +1106,12 @@ class SPITextDecorationStyle : public SPIBase {
     }
 
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
   // To do: make private
-  public:
+public:
     bool solid : 1;
     bool isdouble : 1;  // cannot use "double" as it is a reserved keyword
     bool dotted : 1;
@@ -837,18 +1128,26 @@ class SPITextDecorationStyle : public SPIBase {
 // the right style. (See http://www.w3.org/TR/css-text-decor-3/#text-decoration-property )
 
 /// Text decoration type internal to SPStyle.
-class SPITextDecoration : public SPIBase {
+class SPITextDecoration : public SPIBase
+{
+
+public:
+    SPITextDecoration()
+        : SPIBase( "text-decoration" ),
+          style_td( NULL )
+    {}
+
+    virtual ~SPITextDecoration()
+    {}
 
-  public:
-    SPITextDecoration() : SPIBase( "text-decoration" ), style_td( NULL ) {};
-    virtual ~SPITextDecoration() {};
     virtual void read( gchar const *str );
     virtual const Glib::ustring write( guint const flags = SP_STYLE_FLAG_IFSET,
                                        SPIBase const *const base = NULL ) const;
     virtual void clear() {
         SPIBase::clear();
         style_td = NULL;
-    };
+    }
+
     virtual void cascade( const SPIBase* const parent );
     virtual void merge(   const SPIBase* const parent );
 
@@ -859,9 +1158,11 @@ class SPITextDecoration : public SPIBase {
 
     // Use CSS2 value
     virtual bool operator==(const SPIBase& rhs);
-    virtual bool operator!=(const SPIBase& rhs) { return !(*this == rhs); };
+    virtual bool operator!=(const SPIBase& rhs) {
+        return !(*this == rhs);
+    }
 
-  public:
+public:
     SPStyle* style_td;   // Style to be used for drawing CSS2 text decorations 
 };
 
diff --git a/src/style.cpp b/src/style.cpp
index 66672e949..e0c8536fc 100644
--- a/src/style.cpp
+++ b/src/style.cpp
@@ -440,6 +440,8 @@ SPStyle::~SPStyle() {
 
     // Remove connections
     release_connection.disconnect();
+    fill_ps_changed_connection.disconnect();
+    stroke_ps_changed_connection.disconnect();
 
     // The following shoud be moved into SPIPaint and SPIFilter
     if (fill.value.href) {
@@ -499,10 +501,10 @@ SPStyle::clear() {
         filter.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), this));
 
         fill.value.href = new SPPaintServerReference(document);
-        fill.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), this));
+        fill_ps_changed_connection = fill.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), this));
 
         stroke.value.href = new SPPaintServerReference(document);
-        stroke.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), this));
+        stroke_ps_changed_connection = stroke.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), this));
     }
 
     cloned = false;
@@ -1118,6 +1120,7 @@ sp_style_fill_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle
            ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style));
     }
 
+    style->signal_fill_ps_changed.emit(old_ref, ref);
     sp_style_paint_server_ref_modified(ref, 0, style);
 }
 
@@ -1135,6 +1138,7 @@ sp_style_stroke_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPSty
           ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style));
     }
 
+    style->signal_stroke_ps_changed.emit(old_ref, ref);
     sp_style_paint_server_ref_modified(ref, 0, style);
 }
 
@@ -1363,7 +1367,11 @@ sp_style_set_ipaint_to_uri(SPStyle *style, SPIPaint *paint, const Inkscape::URI
     // now that we have a document, we can create it here
     if (!paint->value.href && document) {
         paint->value.href = new SPPaintServerReference(document);
-        paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((paint == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style));
+        if (paint == &style->fill) {
+            style->fill_ps_changed_connection = paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), style));
+        } else {
+            style->stroke_ps_changed_connection = paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), style));
+        }
     }
 
     if (paint->value.href){
diff --git a/src/style.h b/src/style.h
index 48eb55430..a4c2b3043 100644
--- a/src/style.h
+++ b/src/style.h
@@ -252,6 +252,22 @@ public:
     sigc::connection filter_modified_connection;
     sigc::connection fill_ps_modified_connection;
     sigc::connection stroke_ps_modified_connection;
+    sigc::connection fill_ps_changed_connection;
+    sigc::connection stroke_ps_changed_connection;
+
+    /**
+     * Emitted when paint server object, fill paint refers to, is changed. That is
+     * when the reference starts pointing to a different address in memory.
+     *
+     * NB It is different from fill_ps_modified signal. When paint server is modified
+     * it means some of it's attributes or chilren change.
+     */
+    sigc::signal<void, SPObject *, SPObject *> signal_fill_ps_changed;
+    /**
+     * Emitted when paint server object, fill paint refers to, is changed. That is
+     * when the reference starts pointing to a different address in memory.
+     */
+    sigc::signal<void, SPObject *, SPObject *> signal_stroke_ps_changed;
 
     SPObject       *getFilter()          { return (filter.href) ? filter.href->getObject() : NULL; }
     SPObject const *getFilter()    const { return (filter.href) ? filter.href->getObject() : NULL; }
diff --git a/src/svg/CMakeLists.txt b/src/svg/CMakeLists.txt
index 968287895..f9d0bc52d 100644
--- a/src/svg/CMakeLists.txt
+++ b/src/svg/CMakeLists.txt
@@ -7,6 +7,7 @@ set(svg_SRC
 	strip-trailing-zeros.cpp
 	svg-affine.cpp
 	svg-color.cpp
+	svg-angle.cpp
 	svg-length.cpp
 	svg-path.cpp
 	# test-stubs.cpp
@@ -24,6 +25,7 @@ set(svg_SRC
 	svg-color-test.h
 	svg-color.h
 	svg-icc-color.h
+	svg-angle.h
 	svg-length-test.h
 	svg-length.h
 	svg-path-geom-test.h
diff --git a/src/svg/Makefile_insert b/src/svg/Makefile_insert
index cf9bf3fbb..4f82bdd76 100644
--- a/src/svg/Makefile_insert
+++ b/src/svg/Makefile_insert
@@ -13,6 +13,8 @@ ink_common_sources +=	\
 	svg/svg-color.cpp	\
 	svg/svg-color.h 	\
 	svg/svg-icc-color.h \
+	svg/svg-angle.cpp   \
+	svg/svg-angle.h     \
 	svg/svg-length.cpp	\
 	svg/svg-length.h	\
 	svg/svg-path.cpp	\
diff --git a/src/svg/svg-angle.cpp b/src/svg/svg-angle.cpp
new file mode 100644
index 000000000..63152368e
--- /dev/null
+++ b/src/svg/svg-angle.cpp
@@ -0,0 +1,136 @@
+/**
+ *  \file src/svg/svg-angle.cpp
+ *  \brief SVG angle type
+ */
+/*
+ * Authors:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <cstring>
+#include <string>
+#include <math.h>
+#include <glib.h>
+
+#include "svg.h"
+#include "stringstream.h"
+#include "svg/svg-angle.h"
+#include "util/units.h"
+
+
+static bool sp_svg_angle_read_lff(gchar const *str, SVGAngle::Unit &unit, float &val, float &computed);
+
+SVGAngle::SVGAngle()
+    : _set(false)
+    , unit(NONE)
+    , value(0)
+    , computed(0)
+{
+}
+
+/* Angle */
+
+bool SVGAngle::read(gchar const *str)
+{
+    if (!str) {
+        return false;
+    }
+
+    SVGAngle::Unit u;
+    float v;
+    float c;
+    if (!sp_svg_angle_read_lff(str, u, v, c)) {
+        return false;
+    }
+
+    _set = true;
+    unit = u;
+    value = v;
+    computed = c;
+
+    return true;
+}
+
+void SVGAngle::unset(SVGAngle::Unit u, float v, float c) {
+    _set = false;
+    unit = u;
+    value = v;
+    computed = c;
+}
+
+void SVGAngle::readOrUnset(gchar const *str, Unit u, float v, float c) {
+    if (!read(str)) {
+        unset(u, v, c);
+    }
+}
+
+static bool sp_svg_angle_read_lff(gchar const *str, SVGAngle::Unit &unit, float &val, float &computed)
+{
+    if (!str) {
+        return false;
+    }
+
+    gchar const *e;
+    float const v = g_ascii_strtod(str, (char **) &e);
+    if (e == str) {
+        return false;
+    }
+
+    if (!e[0]) {
+        /* Unitless (defaults to degrees)*/
+        unit = SVGAngle::NONE;
+        val = v;
+        computed = v;
+        return true;
+    } else if (!g_ascii_isalnum(e[0])) {
+        if (g_ascii_isspace(e[0]) && e[1] && g_ascii_isalpha(e[1])) {
+            return false; // spaces between value and unit are not allowed
+        } else {
+            /* Unitless (defaults to degrees)*/
+            unit = SVGAngle::NONE;
+            val = v;
+            computed = v;
+            return true;
+        }
+    } else {
+        if (strncmp(e, "deg", 3) == 0) {
+            unit = SVGAngle::DEG;
+            computed = v;
+        } else if (strncmp(e, "grad", 4) == 0) {
+            unit = SVGAngle::GRAD;
+            computed = Inkscape::Util::Quantity::convert(v, "grad", "°");
+        } else if (strncmp(e, "rad", 3) == 0) {
+            unit = SVGAngle::RAD;
+            computed = Inkscape::Util::Quantity::convert(v, "rad", "°");
+        } else if (strncmp(e, "turn", 4) == 0) {
+            unit = SVGAngle::TURN;
+            computed = Inkscape::Util::Quantity::convert(v, "turn", "°");
+        } else {
+            return false;
+        }
+        return true;
+    }
+
+    /* Invalid */
+    return false;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/svg/svg-angle.h b/src/svg/svg-angle.h
new file mode 100644
index 000000000..966491174
--- /dev/null
+++ b/src/svg/svg-angle.h
@@ -0,0 +1,69 @@
+#ifndef SEEN_SP_SVG_ANGLE_H
+#define SEEN_SP_SVG_ANGLE_H
+
+/**
+ *  \file src/svg/svg-angle.h
+ *  \brief SVG angle type
+ */
+/*
+ * Authors:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include <glib.h>
+
+class SVGAngle
+{
+public:
+    SVGAngle();
+
+    enum Unit {
+        NONE,
+        DEG,
+        GRAD,
+        RAD,
+        TURN,
+        LAST_UNIT = TURN
+    };
+
+    // The object's value is valid / exists in SVG.
+    bool _set;
+
+    // The unit of value.
+    Unit unit;
+
+    // The value of this SVGAngle as found in the SVG.
+    float value;
+
+    // The value in degrees.
+    float computed;
+
+    float operator=(float v) {
+        _set = true;
+        unit = NONE;
+        value = computed = v;
+        return v;
+    }
+
+    bool read(gchar const *str);
+    void unset(Unit u = NONE, float v = 0, float c = 0);
+    void readOrUnset(gchar const *str, Unit u = NONE, float v = 0, float c = 0);
+};
+
+#endif // SEEN_SP_SVG_ANGLE_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/svg/svg-color.cpp b/src/svg/svg-color.cpp
index 5108b7702..c9f22f8a4 100644
--- a/src/svg/svg-color.cpp
+++ b/src/svg/svg-color.cpp
@@ -511,18 +511,18 @@ sp_svg_create_color_hash()
 
 void icc_color_to_sRGB(SVGICCColor* icc, guchar* r, guchar* g, guchar* b)
 {
-    guchar color_out[4];
-    guchar color_in[4];
     if (icc) {
 g_message("profile name: %s", icc->colorProfile.c_str());
         Inkscape::ColorProfile* prof = SP_ACTIVE_DOCUMENT->profileManager->find(icc->colorProfile.c_str());
         if ( prof ) {
+            guchar color_out[4] = {0,0,0,0};
             cmsHTRANSFORM trans = prof->getTransfToSRGB8();
             if ( trans ) {
                 std::vector<colorspace::Component> comps = colorspace::getColorSpaceInfo( prof );
 
                 size_t count = CMSSystem::getChannelCount( prof );
                 size_t cap = std::min(count, comps.size());
+                guchar color_in[4];
                 for (size_t i = 0; i < cap; i++) {
                     color_in[i] = static_cast<guchar>((((gdouble)icc->colors[i]) * 256.0) * (gdouble)comps[i].scale);
                     g_message("input[%d]: %d", (int)i, (int)color_in[i]);
diff --git a/src/ui/dialog/clonetiler.cpp b/src/ui/dialog/clonetiler.cpp
index 1d6d0403e..5ef885ab2 100644
--- a/src/ui/dialog/clonetiler.cpp
+++ b/src/ui/dialog/clonetiler.cpp
@@ -2235,7 +2235,11 @@ void CloneTiler::clonetiler_apply(GtkWidget */*widget*/, GtkWidget *dlg)
     gdk_window_process_all_updates();
 
     SPObject *obj = selection->singleItem();
-    SPItem *item = SP_IS_ITEM(obj) ? SP_ITEM(obj) : 0;
+    if (!obj) {
+        // Should never happen (empty selection checked above).
+        std::cerr << "CloneTiler::clonetile_apply(): No object in single item selection!!!" << std::endl;
+        return;
+    }
     Inkscape::XML::Node *obj_repr = obj->getRepr();
     const char *id_href = g_strdup_printf("#%s", obj_repr->attribute("id"));
     SPObject *parent = obj->parent;
@@ -2326,6 +2330,7 @@ void CloneTiler::clonetiler_apply(GtkWidget */*widget*/, GtkWidget *dlg)
     bool   invert_picked = prefs->getBool(prefs_path + "invert_picked");
     double gamma_picked = prefs->getDoubleLimited(prefs_path + "gamma_picked", 0, -10, 10);
 
+    SPItem *item = SP_IS_ITEM(obj) ? SP_ITEM(obj) : 0;
     if (dotrace) {
         clonetiler_trace_setup (sp_desktop_document(desktop), 1.0, item);
     }
diff --git a/src/ui/dialog/symbols.cpp b/src/ui/dialog/symbols.cpp
index c58df864c..a9cf8d068 100644
--- a/src/ui/dialog/symbols.cpp
+++ b/src/ui/dialog/symbols.cpp
@@ -62,8 +62,20 @@
 #include "widgets/icon.h"
 
 #ifdef WITH_LIBVISIO
-#include <libvisio/libvisio.h>
-#include <libwpd-stream/libwpd-stream.h>
+  #include <libvisio/libvisio.h>
+
+  // TODO: Drop this check when librevenge is widespread.
+  #if WITH_LIBVISIO01
+    #include <librevenge-stream/librevenge-stream.h>
+
+    using librevenge::RVNGFileStream;
+    using librevenge::RVNGStringVector;
+  #else
+    #include <libwpd-stream/libwpd-stream.h>
+
+    typedef WPXFileStream             RVNGFileStream;
+    typedef libvisio::VSDStringVector RVNGStringVector;
+  #endif
 #endif
 
 #include "verbs.h"
@@ -495,14 +507,20 @@ void SymbolsDialog::iconChanged() {
 // Read Visio stencil files
 SPDocument* read_vss( gchar* fullname, gchar* filename ) {
 
-  WPXFileStream input(fullname);
+  RVNGFileStream input(fullname);
 
   if (!libvisio::VisioDocument::isSupported(&input)) {
     return NULL;
   }
 
-  libvisio::VSDStringVector output;
+  RVNGStringVector output;
+#if WITH_LIBVISIO01
+  librevenge::RVNGSVGDrawingGenerator generator(output, "svg");
+
+  if (!libvisio::VisioDocument::parseStencils(&input, &generator)) {
+#else
   if (!libvisio::VisioDocument::generateSVGStencils(&input, output)) {
+#endif
     return NULL;
   }
 
diff --git a/src/ui/widget/selected-style.cpp b/src/ui/widget/selected-style.cpp
index d3adb6307..d22c59aa4 100644
--- a/src/ui/widget/selected-style.cpp
+++ b/src/ui/widget/selected-style.cpp
@@ -1220,7 +1220,9 @@ void SelectedStyle::on_opacity_menu (Gtk::Menu *menu) {
     menu->show_all();
 }
 
-void SelectedStyle::on_opacity_changed () {
+void SelectedStyle::on_opacity_changed ()
+{
+    g_return_if_fail(_desktop); // TODO this shouldn't happen!
     if (_opacity_blocked)
         return;
     _opacity_blocked = true;
diff --git a/src/viewbox.cpp b/src/viewbox.cpp
index f59909abc..662b05686 100644
--- a/src/viewbox.cpp
+++ b/src/viewbox.cpp
@@ -164,16 +164,17 @@ void SPViewBox::set_preserveAspectRatio(const gchar* value) {
 void SPViewBox::apply_viewbox(const Geom::Rect& in) {
 
     /* Determine actual viewbox in viewport coordinates */
-    double x = 0.0;
-    double y = 0.0;
-    double width = in.width();
-    double height = in.height();
+    /* These are floats since SVGLength is a float: See bug 1374614 */
+    float x = 0.0;
+    float y = 0.0;
+    float width = in.width();
+    float height = in.height();
     // std::cout << "  width: " << width << " height: " << height << std::endl;
 
     if (this->aspect_align != SP_ASPECT_NONE) {
       /* Things are getting interesting */
-      double scalex = in.width() / this->viewBox.width();
-      double scaley = in.height() / this->viewBox.height();
+      double scalex = in.width() / ((float) this->viewBox.width());
+      double scaley = in.height() / ((float) this->viewBox.height());
       double scale = (this->aspect_clip == SP_ASPECT_MEET) ? MIN (scalex, scaley) : MAX (scalex, scaley);
       width  = this->viewBox.width()  * scale;
       height = this->viewBox.height() * scale;
@@ -217,12 +218,12 @@ void SPViewBox::apply_viewbox(const Geom::Rect& in) {
 
     /* Viewbox transform from scale and position */
     Geom::Affine q;
-    q[0] = width / this->viewBox.width();
+    q[0] = width / ((float) this->viewBox.width());
     q[1] = 0.0;
     q[2] = 0.0;
-    q[3] = height / this->viewBox.height();
-    q[4] = x - q[0] * this->viewBox.left();
-    q[5] = y - q[3] * this->viewBox.top();
+    q[3] = height / ((float) this->viewBox.height());
+    q[4] = x - q[0] * ((float) this->viewBox.left());
+    q[5] = y - q[3] * ((float) this->viewBox.top());
 
     // std::cout << "  q\n" << q << std::endl;
 
diff --git a/src/widgets/ink-comboboxentry-action.cpp b/src/widgets/ink-comboboxentry-action.cpp
index 5c59f6961..1114d2cdb 100644
--- a/src/widgets/ink-comboboxentry-action.cpp
+++ b/src/widgets/ink-comboboxentry-action.cpp
@@ -389,7 +389,7 @@ GtkWidget* create_tool_item( GtkAction* action )
 					    GtkTreeViewRowSeparatorFunc (ink_comboboxentry_action->separator_func),
       					    NULL, NULL );
     }
-    
+
     // FIXME: once gtk3 migration is done this can be removed
     // https://bugzilla.gnome.org/show_bug.cgi?id=734915
     gtk_widget_show_all (comboBoxEntry);
diff --git a/src/widgets/stroke-style.cpp b/src/widgets/stroke-style.cpp
index 3fa39da6f..cb18207f4 100644
--- a/src/widgets/stroke-style.cpp
+++ b/src/widgets/stroke-style.cpp
@@ -763,6 +763,9 @@ StrokeStyle::setJoinType (unsigned const jointype)
             tb = joinBevel;
             break;
         default:
+            // Should not happen
+            std::cerr << "StrokeStyle::setJoinType(): Invalid value" << std::endl;
+            tb = joinMiter;
             break;
     }
     setJoinButtons(tb);
@@ -786,6 +789,9 @@ StrokeStyle::setCapType (unsigned const captype)
             tb = capSquare;
             break;
         default:
+            // Should not happen
+            std::cerr << "StrokeStyle::setCapType(): Invalid value" << std::endl;
+            tb = capButt;
             break;
     }
     setCapButtons(tb);
diff --git a/src/xml/repr-io.cpp b/src/xml/repr-io.cpp
index 0319bb5e3..a4146f215 100644
--- a/src/xml/repr-io.cpp
+++ b/src/xml/repr-io.cpp
@@ -623,7 +623,6 @@ static Node *sp_repr_svg_read_node (Document *xml_doc, xmlNodePtr node, const gc
         repr->setContent(reinterpret_cast<gchar*>(node->content));
     }
 
-    child = node->xmlChildrenNode;
     for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
         Node *crepr = sp_repr_svg_read_node (xml_doc, child, default_ns, prefix_map);
         if (crepr) {