More header cleanup

(bzr r13341.1.198)

70 files changed, 368 insertions, 357 deletions

diff --git a/src/color.cpp b/src/color.cpp
index da4406748..d7e8d25dd 100644
--- a/src/color.cpp
+++ b/src/color.cpp
@@ -12,13 +12,21 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <math.h>
+#include <cmath>
+#include <cstdio>
+
+#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
+#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
+
 #include "color.h"
 #include "svg/svg-icc-color.h"
 #include "svg/svg-color.h"
 
 #include "svg/css-ostringstream.h"
 
+#define return_if_fail(x) if (!(x)) { printf("assertion failed: " #x); return; }
+#define return_val_if_fail(x, val) if (!(x)) { printf("assertion failed: " #x); return val; }
+
 using Inkscape::CSSOStringStream;
 using std::vector;
 
@@ -118,7 +126,7 @@ static bool profileMatches( SVGICCColor const* first, SVGICCColor const* second
             && (first->colorProfile == second->colorProfile)
             && (first->colors.size() == second->colors.size());
         if ( match ) {
-            for ( guint i = 0; i < first->colors.size(); i++ ) {
+            for ( unsigned i = 0; i < first->colors.size(); i++ ) {
                 match &= (fabs(first->colors[i] - second->colors[i]) < PROFILE_EPSILON);
             }
         }
@@ -132,12 +140,12 @@ static bool profileMatches( SVGICCColor const* first, SVGICCColor const* second
  */
 void SPColor::set( float r, float g, float b )
 {
-    g_return_if_fail(r >= 0.0);
-    g_return_if_fail(r <= 1.0);
-    g_return_if_fail(g >= 0.0);
-    g_return_if_fail(g <= 1.0);
-    g_return_if_fail(b >= 0.0);
-    g_return_if_fail(b <= 1.0);
+    return_if_fail(r >= 0.0);
+    return_if_fail(r <= 1.0);
+    return_if_fail(g >= 0.0);
+    return_if_fail(g <= 1.0);
+    return_if_fail(b >= 0.0);
+    return_if_fail(b <= 1.0);
 
     // TODO clear icc if set?
     v.c[0] = r;
@@ -162,7 +170,7 @@ void SPColor::set( guint32 value )
  */
 guint32 SPColor::toRGBA32( int alpha ) const
 {
-    g_return_val_if_fail (alpha <= 0xff, 0x0);
+    return_val_if_fail (alpha <= 0xff, 0x0);
 
     guint32 rgba = SP_RGBA32_U_COMPOSE( SP_COLOR_F_TO_U(v.c[0]),
                                         SP_COLOR_F_TO_U(v.c[1]),
@@ -177,8 +185,8 @@ guint32 SPColor::toRGBA32( int alpha ) const
  */
 guint32 SPColor::toRGBA32( double alpha ) const
 {
-    g_return_val_if_fail(alpha >= 0.0, 0x0);
-    g_return_val_if_fail(alpha <= 1.0, 0x0);
+    return_val_if_fail(alpha >= 0.0, 0x0);
+    return_val_if_fail(alpha <= 1.0, 0x0);
 
     return toRGBA32( static_cast<int>(SP_COLOR_F_TO_U(alpha)) );
 }
@@ -215,8 +223,8 @@ std::string SPColor::toString() const
 void
 sp_color_get_rgb_floatv(SPColor const *color, float *rgb)
 {
-    g_return_if_fail (color != NULL);
-    g_return_if_fail (rgb != NULL);
+    return_if_fail (color != NULL);
+    return_if_fail (rgb != NULL);
 
     rgb[0] = color->v.c[0];
     rgb[1] = color->v.c[1];
@@ -230,8 +238,8 @@ sp_color_get_rgb_floatv(SPColor const *color, float *rgb)
 void
 sp_color_get_cmyk_floatv(SPColor const *color, float *cmyk)
 {
-    g_return_if_fail (color != NULL);
-    g_return_if_fail (cmyk != NULL);
+    return_if_fail (color != NULL);
+    return_if_fail (cmyk != NULL);
 
     sp_color_rgb_to_cmyk_floatv( cmyk,
                                  color->v.c[0],
diff --git a/src/debug/gdk-event-latency-tracker.cpp b/src/debug/gdk-event-latency-tracker.cpp
index b21675f53..4679f05f1 100644
--- a/src/debug/gdk-event-latency-tracker.cpp
+++ b/src/debug/gdk-event-latency-tracker.cpp
@@ -9,6 +9,8 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
+#include <gdk/gdk.h>
+
 #include "debug/gdk-event-latency-tracker.h"
 #include "preferences.h"
 
diff --git a/src/debug/gdk-event-latency-tracker.h b/src/debug/gdk-event-latency-tracker.h
index c3624e74f..0fdb18790 100644
--- a/src/debug/gdk-event-latency-tracker.h
+++ b/src/debug/gdk-event-latency-tracker.h
@@ -12,7 +12,7 @@
 #ifndef SEEN_INKSCAPE_DEBUG_GDK_EVENT_LATENCY_TRACKER_H
 #define SEEN_INKSCAPE_DEBUG_GDK_EVENT_LATENCY_TRACKER_H
 
-#include <gdk/gdk.h>
+typedef union _GdkEvent GdkEvent;
 #include <glibmm/timer.h>
 #include <boost/optional.hpp>
 
diff --git a/src/display/cairo-utils.cpp b/src/display/cairo-utils.cpp
index d6ff7b2f0..b81162548 100644
--- a/src/display/cairo-utils.cpp
+++ b/src/display/cairo-utils.cpp
@@ -26,6 +26,8 @@
 #include <2geom/path.h>
 #include <2geom/transforms.h>
 #include <2geom/sbasis-to-bezier.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
 #include "color.h"
 #include "style.h"
 #include "helper/geom-curves.h"
diff --git a/src/display/canvas-arena.h b/src/display/canvas-arena.h
index 26f19732d..15bbc2ee0 100644
--- a/src/display/canvas-arena.h
+++ b/src/display/canvas-arena.h
@@ -13,15 +13,13 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <cairo.h>
 #include <2geom/rect.h>
+
 #include "display/drawing.h"
 #include "display/drawing-item.h"
 #include "display/sp-canvas.h"
 #include "display/sp-canvas-item.h"
 
-G_BEGIN_DECLS
-
 #define SP_TYPE_CANVAS_ARENA (sp_canvas_arena_get_type ())
 #define SP_CANVAS_ARENA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SP_TYPE_CANVAS_ARENA, SPCanvasArena))
 #define SP_CANVAS_ARENA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), SP_TYPE_CANVAS_ARENA, SPCanvasArenaClass))
@@ -30,6 +28,7 @@ G_BEGIN_DECLS
 
 typedef struct _SPCanvasArena      SPCanvasArena;
 typedef struct _SPCanvasArenaClass SPCanvasArenaClass;
+typedef struct _cairo_surface      cairo_surface_t;
 struct CachePrefObserver;
 
 namespace Inkscape {
@@ -39,7 +38,6 @@ class DrawingItem;
 
 } // namespace Inkscape
 
-
 struct _SPCanvasArena {
     SPCanvasItem item;
 
@@ -70,6 +68,4 @@ void sp_canvas_arena_set_sticky (SPCanvasArena *ca, gboolean sticky);
 
 void sp_canvas_arena_render_surface (SPCanvasArena *ca, cairo_surface_t *surface, Geom::IntRect const &area);
 
-G_END_DECLS
-
 #endif // SEEN_SP_CANVAS_ARENA_H
diff --git a/src/display/canvas-axonomgrid.h b/src/display/canvas-axonomgrid.h
index 3888a3dc4..92cdb4c50 100644
--- a/src/display/canvas-axonomgrid.h
+++ b/src/display/canvas-axonomgrid.h
@@ -26,11 +26,11 @@ public:
     CanvasAxonomGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
     virtual ~CanvasAxonomGrid();
 
-    void Update (Geom::Affine const &affine, unsigned int flags);
-    void Render (SPCanvasBuf *buf);
+    virtual void Update (Geom::Affine const &affine, unsigned int flags);
+    virtual void Render (SPCanvasBuf *buf);
 
-    void readRepr();
-    void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive);
+    virtual void readRepr();
+    virtual void onReprAttrChanged (Inkscape::XML::Node * repr, char const *key, char const *oldval, char const *newval, bool is_interactive);
 
     double lengthy;       /**< The lengths of the primary y-axis */
     double angle_deg[3];  /**< Angle of each axis (note that angle[2] == 0) */
diff --git a/src/display/canvas-grid.h b/src/display/canvas-grid.h
index 5a23dee52..557bd6dab 100644
--- a/src/display/canvas-grid.h
+++ b/src/display/canvas-grid.h
@@ -82,7 +82,7 @@ public:
     virtual void Render (SPCanvasBuf *buf) = 0;
 
     virtual void readRepr() = 0;
-    virtual void onReprAttrChanged (Inkscape::XML::Node * /*repr*/, const gchar */*key*/, const gchar */*oldval*/, const gchar */*newval*/, bool /*is_interactive*/) = 0;
+    virtual void onReprAttrChanged (Inkscape::XML::Node * /*repr*/, char const */*key*/, char const */*oldval*/, char const */*newval*/, bool /*is_interactive*/) = 0;
 
     Gtk::Widget * newWidget();
 
@@ -129,11 +129,11 @@ public:
     CanvasXYGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc);
     virtual ~CanvasXYGrid();
 
-    void Update (Geom::Affine const &affine, unsigned int flags);
-    void Render (SPCanvasBuf *buf);
+    virtual void Update (Geom::Affine const &affine, unsigned int flags);
+    virtual void Render (SPCanvasBuf *buf);
 
-    void readRepr();
-    void onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive);
+    virtual void readRepr();
+    virtual void onReprAttrChanged (Inkscape::XML::Node * repr, char const *key, char const *oldval, char const *newval, bool is_interactive);
 
     Geom::Point spacing; /**< Spacing between elements of the grid */
     bool scaled[2];    /**< Whether the grid is in scaled mode, which can
diff --git a/src/display/canvas-temporary-item-list.cpp b/src/display/canvas-temporary-item-list.cpp
index b0fec98b5..60ead11ce 100644
--- a/src/display/canvas-temporary-item-list.cpp
+++ b/src/display/canvas-temporary-item-list.cpp
@@ -10,9 +10,8 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include "display/canvas-temporary-item-list.h"
-
 #include "display/canvas-temporary-item.h"
+#include "display/canvas-temporary-item-list.h"
 
 namespace Inkscape {
 namespace Display {
@@ -35,7 +34,7 @@ TemporaryItemList::~TemporaryItemList()
 
 /* Note that TemporaryItem or TemporaryItemList is responsible for deletion and such, so this return pointer can safely be ignored. */
 TemporaryItem *
-TemporaryItemList::add_item(SPCanvasItem *item, guint lifetime)
+TemporaryItemList::add_item(SPCanvasItem *item, unsigned int lifetime)
 {
     // beware of strange things happening due to very short timeouts
     TemporaryItem * tempitem = new TemporaryItem(item, lifetime);
diff --git a/src/display/canvas-temporary-item-list.h b/src/display/canvas-temporary-item-list.h
index d204c692f..471bb99b9 100644
--- a/src/display/canvas-temporary-item-list.h
+++ b/src/display/canvas-temporary-item-list.h
@@ -11,7 +11,6 @@
  */
 
 #include <list>
-#include <glib.h>
 
 struct SPCanvasItem;
 class SPDesktop;
@@ -22,14 +21,14 @@ namespace Display {
 class TemporaryItem;
 
 /**
- * Provides a class that can contain active TemporaryItem's on a desktop.
+ * Provides a class that can contain active TemporaryItem[s] on a desktop.
  */
 class TemporaryItemList  {
 public:
     TemporaryItemList(SPDesktop *desktop);
     virtual ~TemporaryItemList();
 
-    TemporaryItem* add_item (SPCanvasItem *item, guint lifetime);
+    TemporaryItem* add_item (SPCanvasItem *item, unsigned int lifetime);
     void           delete_item (TemporaryItem * tempitem);
 
 protected:
diff --git a/src/display/canvas-temporary-item.cpp b/src/display/canvas-temporary-item.cpp
index 551ea1536..f55c8bf4e 100644
--- a/src/display/canvas-temporary-item.cpp
+++ b/src/display/canvas-temporary-item.cpp
@@ -16,7 +16,7 @@
 
 #include "display/canvas-temporary-item.h"
 
-#include <gtk/gtk.h>
+#include <glib.h>
 #include "display/sp-canvas-item.h"
 
 namespace Inkscape {
@@ -54,9 +54,9 @@ TemporaryItem::~TemporaryItem()
     }
 }
 
-/* static method*/
-gboolean TemporaryItem::_timeout(gpointer data) {
-    TemporaryItem *tempitem = reinterpret_cast<TemporaryItem *>(data);
+/* static method */
+int TemporaryItem::_timeout(void* data) {
+    TemporaryItem *tempitem = static_cast<TemporaryItem *>(data);
     tempitem->timeout_id = 0;
     tempitem->signal_timeout.emit(tempitem);
     delete tempitem;
diff --git a/src/display/canvas-temporary-item.h b/src/display/canvas-temporary-item.h
index 09d243fa1..39ca2fc65 100644
--- a/src/display/canvas-temporary-item.h
+++ b/src/display/canvas-temporary-item.h
@@ -11,9 +11,8 @@
  */
 
 
-#include <stddef.h>
-#include <sigc++/sigc++.h>
-#include <glib.h>
+#include <cstddef>
+#include <sigc++/signal.h>
 
 struct SPCanvasItem;
 
@@ -25,7 +24,7 @@ namespace Display {
  */
 class TemporaryItem  {
 public:
-    TemporaryItem(SPCanvasItem *item, guint lifetime, bool destroy_on_deselect = false);
+    TemporaryItem(SPCanvasItem *item, unsigned int lifetime, bool destroy_on_deselect = false);
     virtual ~TemporaryItem();
 
     sigc::signal<void, TemporaryItem *> signal_timeout;
@@ -34,10 +33,10 @@ protected:
     friend class TemporaryItemList;
 
     SPCanvasItem * canvasitem;   /** The item we are holding on to */
-    guint timeout_id;     /** ID by which glib knows the timeout event */
+    unsigned int timeout_id;     /** ID by which glib knows the timeout event */
     bool destroy_on_deselect; // only destroy when parent item is deselected, not when mouse leaves
 
-    static gboolean _timeout(gpointer data); ///< callback for when lifetime expired
+    static int _timeout(void* data); ///< callback for when lifetime expired
 
 private:
     TemporaryItem(const TemporaryItem&);
diff --git a/src/display/curve.cpp b/src/display/curve.cpp
index 0a39a8e7f..54a62939d 100644
--- a/src/display/curve.cpp
+++ b/src/display/curve.cpp
@@ -48,7 +48,7 @@ SPCurve::new_from_rect(Geom::Rect const &rect, bool all_four_sides)
     Geom::Point p = rect.corner(0);
     c->moveto(p);
 
-    for (int i=3; i>=1; i--) {
+    for (int i=3; i>=1; --i) {
         c->lineto(rect.corner(i));
     }
 
@@ -87,10 +87,10 @@ SPCurve::get_pathvector() const
  * Returns the number of segments of all paths summed
  * This count includes the closing line segment of a closed path.
  */
-guint
+size_t
 SPCurve::get_segment_count() const
 {
-    guint nr = 0;
+    size_t nr = 0;
     for(Geom::PathVector::const_iterator it = _pathv.begin(); it != _pathv.end(); ++it) {
         nr += (*it).size();
 
@@ -200,7 +200,7 @@ SPCurve::reset()
  * Calls SPCurve::moveto() with point made of given coordinates.
  */
 void
-SPCurve::moveto(gdouble x, gdouble y)
+SPCurve::moveto(double x, double y)
 {
     moveto(Geom::Point(x, y));
 }
@@ -229,7 +229,7 @@ SPCurve::lineto(Geom::Point const &p)
  * Calls SPCurve::lineto( Geom::Point(x,y) )
  */
 void
-SPCurve::lineto(gdouble x, gdouble y)
+SPCurve::lineto(double x, double y)
 {
     lineto(Geom::Point(x,y));
 }
@@ -249,7 +249,7 @@ SPCurve::quadto(Geom::Point const &p1, Geom::Point const &p2)
  * All coordinates must be finite.
  */
 void
-SPCurve::quadto(gdouble x1, gdouble y1, gdouble x2, gdouble y2)
+SPCurve::quadto(double x1, double y1, double x2, double y2)
 {
     quadto( Geom::Point(x1,y1), Geom::Point(x2,y2) );
 }
@@ -269,7 +269,7 @@ SPCurve::curveto(Geom::Point const &p0, Geom::Point const &p1, Geom::Point const
  * All coordinates must be finite.
  */
 void
-SPCurve::curveto(gdouble x0, gdouble y0, gdouble x1, gdouble y1, gdouble x2, gdouble y2)
+SPCurve::curveto(double x0, double y0, double x1, double y1, double x2, double y2)
 {
     curveto( Geom::Point(x0,y0), Geom::Point(x1,y1), Geom::Point(x2,y2) );
 }
@@ -520,7 +520,7 @@ SPCurve::append(SPCurve const *curve2,
  * When one of the curves is empty, this curves path becomes the non-empty path.
  */
 SPCurve *
-SPCurve::append_continuous(SPCurve const *c1, gdouble tolerance)
+SPCurve::append_continuous(SPCurve const *c1, double tolerance)
 {
     using Geom::X;
     using Geom::Y;
@@ -630,10 +630,10 @@ SPCurve::move_endpoints(Geom::Point const &new_p0, Geom::Point const &new_p1)
  * Sum of nodes in all the paths. When a path is closed, and its closing line segment is of zero-length,
  * this function will not count the closing knot double (so basically ignores the closing line segment when it has zero length)
  */
-guint
+size_t
 SPCurve::nodes_in_path() const
 {
-    guint nr = 0;
+    size_t nr = 0;
     for(Geom::PathVector::const_iterator it = _pathv.begin(); it != _pathv.end(); ++it) {
         nr += (*it).size();
 
diff --git a/src/display/curve.h b/src/display/curve.h
index b3f1e3702..5fad75b18 100644
--- a/src/display/curve.h
+++ b/src/display/curve.h
@@ -13,10 +13,12 @@
 #ifndef SEEN_DISPLAY_CURVE_H
 #define SEEN_DISPLAY_CURVE_H
 
-#include <glib.h>
 #include <2geom/forward.h>
+#include <cstddef>
 #include <boost/optional.hpp>
 
+extern "C" { typedef struct _GSList GSList; }
+
 /**
  * Wrapper around a Geom::PathVector object.
  */
@@ -37,8 +39,8 @@ public:
 
     SPCurve * copy() const;
 
-    guint get_segment_count() const;
-    guint nodes_in_path() const;
+    size_t get_segment_count() const;
+    size_t nodes_in_path() const;
 
     bool is_empty() const;
     bool is_closed() const;
@@ -54,13 +56,13 @@ public:
     void reset();
 
     void moveto(Geom::Point const &p);
-    void moveto(gdouble x, gdouble y);
+    void moveto(double x, double y);
     void lineto(Geom::Point const &p);
-    void lineto(gdouble x, gdouble y);
+    void lineto(double x, double y);
     void quadto(Geom::Point const &p1, Geom::Point const &p2);
-    void quadto(gdouble x1, gdouble y1, gdouble x2, gdouble y2);
+    void quadto(double x1, double y1, double x2, double y2);
     void curveto(Geom::Point const &p0, Geom::Point const &p1, Geom::Point const &p2);
-    void curveto(gdouble x0, gdouble y0, gdouble x1, gdouble y1, gdouble x2, gdouble y2);
+    void curveto(double x0, double y0, double x1, double y1, double x2, double y2);
     void closepath();
     void closepath_current();
     void backspace();
@@ -71,14 +73,14 @@ public:
     void last_point_additive_move(Geom::Point const & p);
 
     void append(SPCurve const *curve2, bool use_lineto);
-    SPCurve * append_continuous(SPCurve const *c1, gdouble tolerance);
+    SPCurve * append_continuous(SPCurve const *c1, double tolerance);
     SPCurve * create_reverse() const;
 
     GSList * split() const;
     static SPCurve * concat(GSList const *list);
 
 protected:
-    gint _refcount;
+    size_t _refcount;
 
     Geom::PathVector _pathv;
 
diff --git a/src/display/drawing-context.h b/src/display/drawing-context.h
index 0d82087c3..a15e0d0e5 100644
--- a/src/display/drawing-context.h
+++ b/src/display/drawing-context.h
@@ -12,13 +12,13 @@
 #ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_CONTEXT_H
 #define SEEN_INKSCAPE_DISPLAY_DRAWING_CONTEXT_H
 
-#include <boost/utility.hpp>
-#include <glib.h>
-#include <cairo.h>
 #include <2geom/affine.h>
 #include <2geom/angle.h>
 #include <2geom/rect.h>
 #include <2geom/transforms.h>
+#include <boost/utility.hpp>
+#include <cairo.h>
+typedef unsigned int guint32;
 
 namespace Inkscape {
 
diff --git a/src/display/drawing-item.h b/src/display/drawing-item.h
index 925bcbddb..dda5cd6ac 100644
--- a/src/display/drawing-item.h
+++ b/src/display/drawing-item.h
@@ -12,13 +12,13 @@
 #ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_H
 #define SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_H
 
-#include <list>
-#include <exception>
+#include <2geom/rect.h>
+#include <2geom/affine.h>
 #include <boost/operators.hpp>
 #include <boost/utility.hpp>
 #include <boost/intrusive/list.hpp>
-#include <2geom/rect.h>
-#include <2geom/affine.h>
+#include <exception>
+#include <list>
 
 class SPStyle;
 
diff --git a/src/display/drawing-surface.h b/src/display/drawing-surface.h
index e937cca55..7bec1606a 100644
--- a/src/display/drawing-surface.h
+++ b/src/display/drawing-surface.h
@@ -14,11 +14,16 @@
 
 #include <boost/shared_ptr.hpp>
 #include <cairo.h>
-#include <gdk-pixbuf/gdk-pixbuf.h>
 #include <2geom/affine.h>
 #include <2geom/rect.h>
 #include <2geom/transforms.h>
 
+extern "C" {
+typedef struct _cairo cairo_t;
+typedef struct _cairo_surface cairo_surface_t;
+typedef struct _cairo_region cairo_region_t;
+}
+
 namespace Inkscape {
 class DrawingContext;
 
diff --git a/src/display/drawing.h b/src/display/drawing.h
index 88e35b03b..0c12b1510 100644
--- a/src/display/drawing.h
+++ b/src/display/drawing.h
@@ -12,11 +12,12 @@
 #ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_H
 #define SEEN_INKSCAPE_DISPLAY_DRAWING_H
 
-#include <set>
+#include <2geom/rect.h>
 #include <boost/operators.hpp>
 #include <boost/utility.hpp>
+#include <set>
 #include <sigc++/sigc++.h>
-#include <2geom/rect.h>
+
 #include "display/drawing-item.h"
 #include "display/rendermode.h"
 #include "nr-filter-colormatrix.h"
diff --git a/src/display/gnome-canvas-acetate.h b/src/display/gnome-canvas-acetate.h
index 447c3a9c4..3e1ba7661 100644
--- a/src/display/gnome-canvas-acetate.h
+++ b/src/display/gnome-canvas-acetate.h
@@ -15,10 +15,8 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <glib.h>
 #include "display/sp-canvas-item.h"
 
-
 #define GNOME_TYPE_CANVAS_ACETATE (sp_canvas_acetate_get_type ())
 #define SP_CANVAS_ACETATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GNOME_TYPE_CANVAS_ACETATE, SPCanvasAcetate))
 #define SP_CANVAS_ACETATE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GNOME_TYPE_CANVAS_ACETATE, SPCanvasAcetateClass))
@@ -27,17 +25,15 @@
 
 
 struct SPCanvasAcetate {
-	SPCanvasItem item;
+    SPCanvasItem item;
 };
 
 struct SPCanvasAcetateClass {
-	SPCanvasItemClass parent_class;
+    SPCanvasItemClass parent_class;
 };
 
 GType sp_canvas_acetate_get_type (void);
 
-
-
 #endif // SEEN_SP_CANVAS_ACETATE_H
 
 /*
diff --git a/src/display/grayscale.cpp b/src/display/grayscale.cpp
index f59cf6d23..3c0031e87 100644
--- a/src/display/grayscale.cpp
+++ b/src/display/grayscale.cpp
@@ -36,7 +36,7 @@ guint32 process(guint32 rgba) {
     return process(SP_RGBA32_R_U(rgba), SP_RGBA32_G_U(rgba), SP_RGBA32_B_U(rgba), SP_RGBA32_A_U(rgba));
 }
 
-guint32 process(guchar r, guchar g, guchar b, guchar a) {
+guint32 process(unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
 
     /** To reduce banding in gradients, this calculation is tweaked a bit
      *  by outputing blue+1 or red+1 or both. The luminance is calculated
@@ -62,7 +62,7 @@ guint32 process(guchar r, guchar g, guchar b, guchar a) {
     }
 }
 
-guchar luminance(guchar r, guchar g, guchar b) {
+unsigned char luminance(unsigned char r, unsigned char g, unsigned char b) {
     guint32 luminance = ( red_factor * r
                           + green_factor * g
                           + blue_factor * b );
diff --git a/src/display/grayscale.h b/src/display/grayscale.h
index 18162e1f3..0ffe727da 100644
--- a/src/display/grayscale.h
+++ b/src/display/grayscale.h
@@ -10,15 +10,15 @@
  * Released under GNU GPL
  */
 
-#include <gdk/gdk.h>
+typedef unsigned int guint32;
 
 /**
  * Provide methods to calculate grayscale values (e.g. convert rgba value to grayscale rgba value).
  */
 namespace Grayscale {
     guint32 process(guint32 rgba);
-    guint32 process(guchar r, guchar g, guchar b, guchar a);
-    guchar  luminance(guchar r, guchar g, guchar b);
+    guint32 process(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
+    unsigned char luminance(unsigned char r, unsigned char g, unsigned char b);
 
     bool activeDesktopIsGrayscale();
 };
diff --git a/src/display/nr-3dutils.h b/src/display/nr-3dutils.h
index c278c81c6..eb773a9ad 100644
--- a/src/display/nr-3dutils.h
+++ b/src/display/nr-3dutils.h
@@ -1,5 +1,5 @@
-#ifndef __NR_3DUTILS_H__
-#define __NR_3DUTILS_H__
+#ifndef SEEN_NR_3DUTILS_H
+#define SEEN_NR_3DUTILS_H
 
 /*
  * 3D utils. Definition of gdouble vectors of dimension 3 and of some basic
@@ -14,7 +14,6 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <gdk/gdk.h>
 #include <2geom/forward.h>
 
 namespace NR {
@@ -51,7 +50,7 @@ const static Fvector EYE_VECTOR(0, 0, 1);
  * \param v a reference to a vector with double components
  * \return the euclidian norm of v
  */
-gdouble norm(const Fvector &v);
+double norm(const Fvector &v);
 
 /**
  * Normalizes a vector
@@ -67,7 +66,7 @@ void normalize_vector(Fvector &v);
  * \param b a Fvector reference
  * \return the scalar product of a and b
  */
-gdouble scalar_product(const Fvector &a, const Fvector &b);
+double scalar_product(const Fvector &a, const Fvector &b);
 
 /**
  * Computes the normalized sum of two Fvectors
@@ -88,7 +87,7 @@ void normalized_sum(Fvector &r, const Fvector &a, const Fvector &b);
  * \param z a reference to a z coordinate
  * \param z a reference to a transformation matrix
  */
-void convert_coord(gdouble &x, gdouble &y, gdouble &z, Geom::Affine const &trans);
+void convert_coord(double &x, double &y, double &z, Geom::Affine const &trans);
 
 } /* namespace NR */
 
diff --git a/src/display/nr-filter-blend.h b/src/display/nr-filter-blend.h
index c0504993b..30c9d6725 100644
--- a/src/display/nr-filter-blend.h
+++ b/src/display/nr-filter-blend.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_BLEND_H__
-#define __NR_FILTER_BLEND_H__
+#ifndef SEEN_NR_FILTER_BLEND_H
+#define SEEN_NR_FILTER_BLEND_H
 
 /*
  * SVG feBlend renderer
diff --git a/src/display/nr-filter-colormatrix.h b/src/display/nr-filter-colormatrix.h
index c7e5e91d9..cc43f4914 100644
--- a/src/display/nr-filter-colormatrix.h
+++ b/src/display/nr-filter-colormatrix.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_COLOR_MATRIX_H__
-#define __NR_FILTER_COLOR_MATRIX_H__
+#ifndef SEEN_NR_FILTER_COLOR_MATRIX_H
+#define SEEN_NR_FILTER_COLOR_MATRIX_H
 
 /*
  * feColorMatrix filter primitive renderer
@@ -16,6 +16,9 @@
 #include <2geom/forward.h>
 #include "display/nr-filter-primitive.h"
 
+typedef unsigned int guint32;
+typedef signed int gint32;
+
 namespace Inkscape {
 namespace Filters {
 
@@ -40,8 +43,8 @@ public:
     virtual double complexity(Geom::Affine const &ctm);
 
     virtual void set_type(FilterColorMatrixType type);
-    virtual void set_value(gdouble value);
-    virtual void set_values(std::vector<gdouble> const &values);
+    virtual void set_value(double value);
+    virtual void set_values(std::vector<double> const &values);
 
 public:
     struct ColorMatrixMatrix {
@@ -52,8 +55,8 @@ public:
     };
 
 private:
-    std::vector<gdouble> values;
-    gdouble value;
+    std::vector<double> values;
+    double value;
     FilterColorMatrixType type;
 };
 
diff --git a/src/display/nr-filter-component-transfer.h b/src/display/nr-filter-component-transfer.h
index 558d097a8..7019dde37 100644
--- a/src/display/nr-filter-component-transfer.h
+++ b/src/display/nr-filter-component-transfer.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_COMPONENT_TRANSFER_H__
-#define __NR_FILTER_COMPONENT_TRANSFER_H__
+#ifndef SEEN_NR_FILTER_COMPONENT_TRANSFER_H
+#define SEEN_NR_FILTER_COMPONENT_TRANSFER_H
 
 /*
  * feComponentTransfer filter primitive renderer
@@ -40,7 +40,7 @@ public:
     virtual double complexity(Geom::Affine const &ctm);
 
     FilterComponentTransferType type[4];
-    std::vector<gdouble> tableValues[4];
+    std::vector<double> tableValues[4];
     double slope[4];
     double intercept[4];
     double amplitude[4];
diff --git a/src/display/nr-filter-composite.h b/src/display/nr-filter-composite.h
index 95579cc0e..35756383b 100644
--- a/src/display/nr-filter-composite.h
+++ b/src/display/nr-filter-composite.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_COMPOSITE_H__
-#define __NR_FILTER_COMPOSITE_H__
+#ifndef SEEN_NR_FILTER_COMPOSITE_H
+#define SEEN_NR_FILTER_COMPOSITE_H
 
 /*
  * feComposite filter effect renderer
diff --git a/src/display/nr-filter-convolve-matrix.h b/src/display/nr-filter-convolve-matrix.h
index 4041ff96f..d2e38eb95 100644
--- a/src/display/nr-filter-convolve-matrix.h
+++ b/src/display/nr-filter-convolve-matrix.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_CONVOLVE_MATRIX_H__
-#define __NR_FILTER_CONVOLVE_MATRIX_H__
+#ifndef SEEN_NR_FILTER_CONVOLVE_MATRIX_H
+#define SEEN_NR_FILTER_CONVOLVE_MATRIX_H
 
 /*
  * feConvolveMatrix filter primitive renderer
@@ -48,10 +48,10 @@ public:
     void set_preserveAlpha(bool pa);
 
 private:
-    std::vector<gdouble> kernelMatrix;
+    std::vector<double> kernelMatrix;
     int targetX, targetY;
     int orderX, orderY;
-    gdouble divisor, bias;
+    double divisor, bias;
     int dx, dy, kernelUnitLength;
     FilterConvolveMatrixEdgeMode edgeMode;
     bool preserveAlpha;
diff --git a/src/display/nr-filter-diffuselighting.h b/src/display/nr-filter-diffuselighting.h
index 043a5eb39..7739b3ea6 100644
--- a/src/display/nr-filter-diffuselighting.h
+++ b/src/display/nr-filter-diffuselighting.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_DIFFUSELIGHTING_H__
-#define __NR_FILTER_DIFFUSELIGHTING_H__
+#ifndef SEEN_NR_FILTER_DIFFUSELIGHTING_H
+#define SEEN_NR_FILTER_DIFFUSELIGHTING_H
 
 /*
  * feDiffuseLighting renderer
@@ -13,7 +13,6 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <gdk/gdk.h>
 #include "display/nr-light-types.h"
 #include "display/nr-filter-primitive.h"
 #include "display/nr-filter-slot.h"
@@ -23,6 +22,7 @@ class SPFeDistantLight;
 class SPFePointLight;
 class SPFeSpotLight;
 struct SVGICCColor;
+typedef unsigned int guint32;
 
 namespace Inkscape {
 namespace Filters {
@@ -43,8 +43,8 @@ public:
         SPFeSpotLight *spot;
     } light;
     LightType light_type;
-    gdouble diffuseConstant;
-    gdouble surfaceScale;
+    double diffuseConstant;
+    double surfaceScale;
     guint32 lighting_color;
 
 private:
diff --git a/src/display/nr-filter-displacement-map.h b/src/display/nr-filter-displacement-map.h
index a01930045..c4e2400fe 100644
--- a/src/display/nr-filter-displacement-map.h
+++ b/src/display/nr-filter-displacement-map.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_DISPLACEMENT_MAP_H__
-#define __NR_FILTER_DISPLACEMENT_MAP_H__
+#ifndef SEEN_NR_FILTER_DISPLACEMENT_MAP_H
+#define SEEN_NR_FILTER_DISPLACEMENT_MAP_H
 
 /*
  * feDisplacementMap filter primitive renderer
diff --git a/src/display/nr-filter-flood.h b/src/display/nr-filter-flood.h
index 9a968047d..826aa981a 100644
--- a/src/display/nr-filter-flood.h
+++ b/src/display/nr-filter-flood.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_FLOOD_H__
-#define __NR_FILTER_FLOOD_H__
+#ifndef SEEN_NR_FILTER_FLOOD_H
+#define SEEN_NR_FILTER_FLOOD_H
 
 /*
  * feFlood filter primitive renderer
@@ -15,6 +15,7 @@
 #include "display/nr-filter-primitive.h"
 
 struct SVGICCColor;
+typedef unsigned int guint32;
 
 namespace Inkscape {
 namespace Filters {
diff --git a/src/display/nr-filter-gaussian.h b/src/display/nr-filter-gaussian.h
index 1c35a0f1d..88c38247f 100644
--- a/src/display/nr-filter-gaussian.h
+++ b/src/display/nr-filter-gaussian.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_GAUSSIAN_H__
-#define __NR_FILTER_GAUSSIAN_H__
+#ifndef SEEN_NR_FILTER_GAUSSIAN_H
+#define SEEN_NR_FILTER_GAUSSIAN_H
 
 /*
  * Gaussian blur renderer
diff --git a/src/display/nr-filter-image.h b/src/display/nr-filter-image.h
index 69691ac99..147a8ba6c 100644
--- a/src/display/nr-filter-image.h
+++ b/src/display/nr-filter-image.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_IMAGE_H__
-#define __NR_FILTER_IMAGE_H__
+#ifndef SEEN_NR_FILTER_IMAGE_H
+#define SEEN_NR_FILTER_IMAGE_H
 
 /*
  * feImage filter primitive renderer
@@ -34,7 +34,7 @@ public:
     virtual double complexity(Geom::Affine const &ctm);
 
     void set_document( SPDocument *document );
-    void set_href(const gchar *href);
+    void set_href(char const *href);
     void set_align( unsigned int align );
     void set_clip( unsigned int clip );
     bool from_element;
@@ -42,7 +42,7 @@ public:
 
 private:
     SPDocument *document;
-    gchar *feImageHref;
+    char *feImageHref;
     Inkscape::Pixbuf *image;
     float feImageX, feImageY, feImageWidth, feImageHeight;
     unsigned int aspect_align, aspect_clip;
diff --git a/src/display/nr-filter-merge.h b/src/display/nr-filter-merge.h
index 238f9a3e7..b20d663ab 100644
--- a/src/display/nr-filter-merge.h
+++ b/src/display/nr-filter-merge.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_MERGE_H__
-#define __NR_FILTER_MERGE_H__
+#ifndef SEEN_NR_FILTER_MERGE_H
+#define SEEN_NR_FILTER_MERGE_H
 
 /*
  * feMerge filter effect renderer
diff --git a/src/display/nr-filter-morphology.h b/src/display/nr-filter-morphology.h
index 0574ff4ad..cd7dfe775 100644
--- a/src/display/nr-filter-morphology.h
+++ b/src/display/nr-filter-morphology.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_MORPHOLOGY_H__
-#define __NR_FILTER_MORPHOLOGY_H__
+#ifndef SEEN_NR_FILTER_MORPHOLOGY_H
+#define SEEN_NR_FILTER_MORPHOLOGY_H
 
 /*
  * feMorphology filter primitive renderer
diff --git a/src/display/nr-filter-offset.h b/src/display/nr-filter-offset.h
index 1ecc1621e..c1ee1d82a 100644
--- a/src/display/nr-filter-offset.h
+++ b/src/display/nr-filter-offset.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_OFFSET_H__
-#define __NR_FILTER_OFFSET_H__
+#ifndef SEEN_NR_FILTER_OFFSET_H
+#define SEEN_NR_FILTER_OFFSET_H
 
 /*
  * feOffset filter primitive renderer
diff --git a/src/display/nr-filter-primitive.h b/src/display/nr-filter-primitive.h
index 62f350844..4b7577159 100644
--- a/src/display/nr-filter-primitive.h
+++ b/src/display/nr-filter-primitive.h
@@ -11,9 +11,9 @@
 #ifndef SEEN_NR_FILTER_PRIMITIVE_H
 #define SEEN_NR_FILTER_PRIMITIVE_H
 
-#include <glib.h>
 #include <2geom/forward.h>
 #include <2geom/rect.h>
+
 #include "display/nr-filter-types.h"
 #include "svg/svg-length.h"
 
@@ -31,7 +31,7 @@ public:
     virtual ~FilterPrimitive();
 
     virtual void render_cairo(FilterSlot &slot);
-    virtual int render(FilterSlot & /*slot*/, FilterUnits const & /*units*/) { return 0; }
+    virtual int render(FilterSlot & /*slot*/, FilterUnits const & /*units*/) { return 0; } // pure virtual?
     virtual void area_enlarge(Geom::IntRect &area, Geom::Affine const &m);
 
     /**
diff --git a/src/display/nr-filter-skeleton.h b/src/display/nr-filter-skeleton.h
index 049c0df80..e17c244c1 100644
--- a/src/display/nr-filter-skeleton.h
+++ b/src/display/nr-filter-skeleton.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_SKELETON_H__
-#define __NR_FILTER_SKELETON_H__
+#ifndef SEEN_NR_FILTER_SKELETON_H
+#define SEEN_NR_FILTER_SKELETON_H
 
 /*
  * Filter primitive renderer skeleton class
diff --git a/src/display/nr-filter-slot.h b/src/display/nr-filter-slot.h
index f3c98b8d9..987dedfd1 100644
--- a/src/display/nr-filter-slot.h
+++ b/src/display/nr-filter-slot.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_SLOT_H__
-#define __NR_FILTER_SLOT_H__
+#ifndef SEEN_NR_FILTER_SLOT_H
+#define SEEN_NR_FILTER_SLOT_H
 
 /*
  * A container class for filter slots. Allows for simple getting and
@@ -15,10 +15,14 @@
  */
 
 #include <map>
-#include <cairo.h>
 #include "display/nr-filter-types.h"
 #include "display/nr-filter-units.h"
 
+extern "C" {
+typedef struct _cairo cairo_t;
+typedef struct _cairo_surface cairo_surface_t;
+}
+
 namespace Inkscape {
 class DrawingContext;
 class DrawingItem;
diff --git a/src/display/nr-filter-specularlighting.h b/src/display/nr-filter-specularlighting.h
index c57e3a9ff..ff9cda450 100644
--- a/src/display/nr-filter-specularlighting.h
+++ b/src/display/nr-filter-specularlighting.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_SPECULARLIGHTING_H__
-#define __NR_FILTER_SPECULARLIGHTING_H__
+#ifndef SEEN_NR_FILTER_SPECULARLIGHTING_H
+#define SEEN_NR_FILTER_SPECULARLIGHTING_H
 
 /*
  * feSpecularLighting renderer
@@ -13,7 +13,6 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
-#include <gdk/gdk.h>
 #include "display/nr-light-types.h"
 #include "display/nr-filter-primitive.h"
 
@@ -21,6 +20,7 @@ class SPFeDistantLight;
 class SPFePointLight;
 class SPFeSpotLight;
 struct SVGICCColor;
+typedef unsigned int guint32;
 
 namespace Inkscape {
 namespace Filters {
@@ -44,9 +44,9 @@ public:
         SPFeSpotLight *spot;
     } light;
     LightType light_type;
-    gdouble surfaceScale;
-    gdouble specularConstant;
-    gdouble specularExponent;
+    double surfaceScale;
+    double specularConstant;
+    double specularExponent;
     guint32 lighting_color;
 
 private:
diff --git a/src/display/nr-filter-tile.h b/src/display/nr-filter-tile.h
index dc5b99a42..29087f2d6 100644
--- a/src/display/nr-filter-tile.h
+++ b/src/display/nr-filter-tile.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_TILE_H__
-#define __NR_FILTER_TILE_H__
+#ifndef SEEN_NR_FILTER_TILE_H
+#define SEEN_NR_FILTER_TILE_H
 
 /*
  * feTile filter primitive renderer
diff --git a/src/display/nr-filter-turbulence.h b/src/display/nr-filter-turbulence.h
index 360853364..ee8079133 100644
--- a/src/display/nr-filter-turbulence.h
+++ b/src/display/nr-filter-turbulence.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_TURBULENCE_H__
-#define __NR_FILTER_TURBULENCE_H__
+#ifndef SEEN_NR_FILTER_TURBULENCE_H
+#define SEEN_NR_FILTER_TURBULENCE_H
 
 /*
  * feTurbulence filter primitive renderer
@@ -22,6 +22,7 @@
  */
 
 #include <2geom/point.h>
+
 #include "display/nr-filter-primitive.h"
 #include "display/nr-filter-slot.h"
 #include "display/nr-filter-units.h"
diff --git a/src/display/nr-filter-types.h b/src/display/nr-filter-types.h
index 502bfe348..2e35d6da8 100644
--- a/src/display/nr-filter-types.h
+++ b/src/display/nr-filter-types.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_TYPES_H__
-#define __NR_FILTER_TYPES_H__
+#ifndef SEEN_NR_FILTER_TYPES_H
+#define SEEN_NR_FILTER_TYPES_H
 
 namespace Inkscape {
 namespace Filters {
diff --git a/src/display/nr-filter-units.h b/src/display/nr-filter-units.h
index f918cf12e..0ee6c3707 100644
--- a/src/display/nr-filter-units.h
+++ b/src/display/nr-filter-units.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_UNITS_H__
-#define __NR_FILTER_UNITS_H__
+#ifndef SEEN_NR_FILTER_UNITS_H
+#define SEEN_NR_FILTER_UNITS_H
 
 /*
  * Utilities for handling coordinate system transformations in filters
diff --git a/src/display/nr-filter-utils.h b/src/display/nr-filter-utils.h
index 7e073168f..35a74d7c1 100644
--- a/src/display/nr-filter-utils.h
+++ b/src/display/nr-filter-utils.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_UTILS_H__
-#define __NR_FILTER_UTILS_H__
+#ifndef SEEN_NR_FILTER_UTILS_H
+#define SEEN_NR_FILTER_UTILS_H
 
 /**
  * @file
@@ -26,7 +26,6 @@ namespace Filters {
  * \return 0 if the value is smaller than 0, 255 if it is greater 255, else v
  * \param v the value to clamp
  */
-__attribute__ ((const))
 inline int clamp(int const val) {
     if (val < 0) return 0;
     if (val > 255) return 255;
@@ -39,7 +38,6 @@ inline int clamp(int const val) {
  * \return 0 if the value is smaller than 0, 255^3 (16581375) if it is greater than 255^3, else v
  * \param v the value to clamp
  */
-__attribute__ ((const))
 inline int clamp3(int const val) {
     if (val < 0) return 0;
     if (val > 16581375) return 16581375;
@@ -59,7 +57,6 @@ inline int clamp3(int const val) {
  * \param val the value to clamp
  * \param alpha the maximum value to clamp to
  */
-__attribute__ ((const))
 inline int clamp_alpha(int const val, int const alpha) {
     if (val < 0) return 0;
     if (val > alpha) return alpha;
diff --git a/src/display/nr-filter.h b/src/display/nr-filter.h
index f9dcf1d84..9a30efabd 100644
--- a/src/display/nr-filter.h
+++ b/src/display/nr-filter.h
@@ -1,5 +1,5 @@
-#ifndef __NR_FILTER_H__
-#define __NR_FILTER_H__
+#ifndef SEEN_NR_FILTER_H
+#define SEEN_NR_FILTER_H
 
 /*
  * SVG filters rendering
diff --git a/src/display/nr-light-types.h b/src/display/nr-light-types.h
index 5c9acb324..8cc92db77 100644
--- a/src/display/nr-light-types.h
+++ b/src/display/nr-light-types.h
@@ -1,5 +1,5 @@
-#ifndef __NR_LIGHT_TYPES_H__
-#define __NR_LIGHT_TYPES_H__
+#ifndef SEEN_NR_LIGHT_TYPES_H
+#define SEEN_NR_LIGHT_TYPES_H
 
 namespace Inkscape {
 namespace Filters {
diff --git a/src/display/nr-light.cpp b/src/display/nr-light.cpp
index 6331d1546..0e9a55a9f 100644
--- a/src/display/nr-light.cpp
+++ b/src/display/nr-light.cpp
@@ -51,7 +51,7 @@ PointLight::PointLight(SPFePointLight *light, guint32 lighting_color, const Geom
 
 PointLight::~PointLight() {}
 
-void PointLight::light_vector(NR::Fvector &v, gdouble x, gdouble y, gdouble z) {
+void PointLight::light_vector(NR::Fvector &v, double x, double y, double z) {
     v[X_3D] = l_x - x;
     v[Y_3D] = l_y - y;
     v[Z_3D] = l_z - z;
@@ -65,7 +65,7 @@ void PointLight::light_components(NR::Fvector &lc) {
 }
 
 SpotLight::SpotLight(SPFeSpotLight *light, guint32 lighting_color, const Geom::Affine &trans) {
-    gdouble p_x, p_y, p_z;
+    double p_x, p_y, p_z;
     color = lighting_color;
     l_x = light->x;
     l_y = light->y;
@@ -86,7 +86,7 @@ SpotLight::SpotLight(SPFeSpotLight *light, guint32 lighting_color, const Geom::A
 
 SpotLight::~SpotLight() {}
 
-void SpotLight::light_vector(NR::Fvector &v, gdouble x, gdouble y, gdouble z) {
+void SpotLight::light_vector(NR::Fvector &v, double x, double y, double z) {
     v[X_3D] = l_x - x;
     v[Y_3D] = l_y - y;
     v[Z_3D] = l_z - z;
@@ -94,7 +94,7 @@ void SpotLight::light_vector(NR::Fvector &v, gdouble x, gdouble y, gdouble z) {
 } 
 
 void SpotLight::light_components(NR::Fvector &lc, const NR::Fvector &L) {
-    gdouble spmod = (-1) * NR::scalar_product(L, S);
+    double spmod = (-1) * NR::scalar_product(L, S);
     if (spmod <= cos_lca)
         spmod = 0;
     else
diff --git a/src/display/nr-light.h b/src/display/nr-light.h
index 0c1235483..94b573761 100644
--- a/src/display/nr-light.h
+++ b/src/display/nr-light.h
@@ -1,5 +1,6 @@
-#ifndef __NR_LIGHT_H__
-#define __NR_LIGHT_H__
+#ifndef SEEN_NR_LIGHT_H
+#define SEEN_NR_LIGHT_H
+
 /** \file
  * These classes provide tools to compute interesting objects relative to light
  * sources. Each class provides a constructor converting information contained
@@ -8,14 +9,15 @@
  * light color components (at a given point).
  */
 
-#include <gdk/gdk.h>
+#include <2geom/forward.h>
+
 #include "display/nr-3dutils.h"
 #include "display/nr-light-types.h"
-#include <2geom/forward.h>
 
 class SPFeDistantLight;
 class SPFePointLight;
 class SPFeSpotLight;
+typedef unsigned int guint32;
 
 namespace Inkscape {
 namespace Filters {
@@ -53,8 +55,8 @@ class DistantLight {
 
     private:
         guint32 color;
-        gdouble azimuth; //azimuth in rad
-        gdouble elevation; //elevation in rad
+        double azimuth; //azimuth in rad
+        double elevation; //elevation in rad
 };
 
 class PointLight {
@@ -80,7 +82,7 @@ class PointLight {
          * \param y y coordinate of the current point
          * \param z z coordinate of the current point
          */
-        void light_vector(NR::Fvector &v, gdouble x, gdouble y, gdouble z);
+        void light_vector(NR::Fvector &v, double x, double y, double z);
         
         /**
          * Computes the light components of the distant light
@@ -92,9 +94,9 @@ class PointLight {
     private:
         guint32 color;
         //light position coordinates in render setting
-        gdouble l_x;
-        gdouble l_y;
-        gdouble l_z;
+        double l_x;
+        double l_y;
+        double l_z;
 };
 
 class SpotLight {
@@ -121,7 +123,7 @@ class SpotLight {
          * \param y y coordinate of the current point
          * \param z z coordinate of the current point
          */
-        void light_vector(NR::Fvector &v, gdouble x, gdouble y, gdouble z);
+        void light_vector(NR::Fvector &v, double x, double y, double z);
 
         /**
          * Computes the light components of the distant light at the current
@@ -135,11 +137,11 @@ class SpotLight {
     private:
         guint32 color;
         //light position coordinates in render setting
-        gdouble l_x;
-        gdouble l_y;
-        gdouble l_z;
-        gdouble cos_lca; //cos of the limiting cone angle
-        gdouble speExp; //specular exponent;
+        double l_x;
+        double l_y;
+        double l_z;
+        double cos_lca; //cos of the limiting cone angle
+        double speExp; //specular exponent;
         NR::Fvector S; //unit vector from light position in the direction
                    //the spot point at
 };
diff --git a/src/display/nr-svgfonts.h b/src/display/nr-svgfonts.h
index e1bb047bb..bdd966144 100644
--- a/src/display/nr-svgfonts.h
+++ b/src/display/nr-svgfonts.h
@@ -1,4 +1,3 @@
-#include "config.h"
 #ifndef NR_SVGFONTS_H_SEEN
 #define NR_SVGFONTS_H_SEEN
 /*
@@ -21,8 +20,7 @@ class SPFont;
 class SPGlyph;
 class SPMissingGlyph;
 
-struct _GdkEventExpose;
-typedef _GdkEventExpose GdkEventExpose;
+extern "C" { typedef struct _GdkEventExpose GdkEventExpose; }
 
 namespace Gtk {
 class Widget;
diff --git a/src/display/sp-canvas-item.h b/src/display/sp-canvas-item.h
index a388ffa91..3b7b7bd4f 100644
--- a/src/display/sp-canvas-item.h
+++ b/src/display/sp-canvas-item.h
@@ -23,8 +23,9 @@
 # include "config.h"
 #endif
 
-#include <glib-object.h>
 #include <2geom/rect.h>
+#include <glib-object.h>
+
 #include "ui/control-types.h"
 
 G_BEGIN_DECLS
diff --git a/src/display/sp-canvas-util.h b/src/display/sp-canvas-util.h
index 07323f31a..73135ed79 100644
--- a/src/display/sp-canvas-util.h
+++ b/src/display/sp-canvas-util.h
@@ -1,5 +1,5 @@
-#ifndef __SP_CANVAS_UTILS_H__
-#define __SP_CANVAS_UTILS_H__
+#ifndef SEEN_SP_CANVAS_UTILS_H
+#define SEEN_SP_CANVAS_UTILS_H
 
 /*
  * Helper stuff for SPCanvas
@@ -19,7 +19,7 @@ struct SPCanvasItem;
 struct SPCanvasBuf;
 
 namespace Geom {
-	class Affine;
+    class Affine;
 }
 
 /* Miscellaneous utility & convenience functions for general canvas objects */
diff --git a/src/display/sp-canvas.h b/src/display/sp-canvas.h
index adae30f35..48c3de2fc 100644
--- a/src/display/sp-canvas.h
+++ b/src/display/sp-canvas.h
@@ -22,15 +22,6 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_INTTYPES_H
-# include <inttypes.h>
-#else
-# ifdef HAVE_STDINT_H
-#  include <stdint.h>
-# endif
-#endif
-
-#include <gdk/gdk.h>
 #include <gtk/gtk.h>
 #include <glibmm/ustring.h>
 #include <2geom/affine.h>
diff --git a/src/filters/distantlight.h b/src/filters/distantlight.h
index 0eebf768f..6490d987c 100644
--- a/src/filters/distantlight.h
+++ b/src/filters/distantlight.h
@@ -27,21 +27,21 @@ public:
 	virtual ~SPFeDistantLight();
 
     /** azimuth attribute */
-    gfloat azimuth;
-    guint azimuth_set : 1;
+    float azimuth;
+    unsigned int azimuth_set : 1;
     /** elevation attribute */
-    gfloat elevation;
-    guint elevation_set : 1;
+    float elevation;
+    unsigned int elevation_set : 1;
 
 protected:
 	virtual void build(SPDocument* doc, Inkscape::XML::Node* repr);
 	virtual void release();
 
-	virtual void set(unsigned int key, const gchar* value);
+	virtual void set(unsigned int key, char const* value);
 
 	virtual void update(SPCtx* ctx, unsigned int flags);
 
-	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, guint flags);
+	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags);
 };
 
 #endif /* !SP_FEDISTANTLIGHT_H_SEEN */
diff --git a/src/filters/pointlight.h b/src/filters/pointlight.h
index 3819d8ff5..1e26d45e7 100644
--- a/src/filters/pointlight.h
+++ b/src/filters/pointlight.h
@@ -26,24 +26,24 @@ public:
 	virtual ~SPFePointLight();
 
     /** x coordinate of the light source */
-    gfloat x; 
-    guint x_set : 1;
+    float x; 
+    unsigned int x_set : 1;
     /** y coordinate of the light source */
-    gfloat y; 
-    guint y_set : 1;
+    float y; 
+    unsigned int y_set : 1;
     /** z coordinate of the light source */
-    gfloat z; 
-    guint z_set : 1;
+    float z; 
+    unsigned int z_set : 1;
 
 protected:
 	virtual void build(SPDocument* doc, Inkscape::XML::Node* repr);
 	virtual void release();
 
-	virtual void set(unsigned int key, const gchar* value);
+	virtual void set(unsigned int key, char const* value);
 
 	virtual void update(SPCtx* ctx, unsigned int flags);
 
-	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, guint flags);
+	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags);
 };
 
 #endif /* !SP_FEPOINTLIGHT_H_SEEN */
diff --git a/src/filters/spotlight.h b/src/filters/spotlight.h
index 8caf12858..7d5f6dd30 100644
--- a/src/filters/spotlight.h
+++ b/src/filters/spotlight.h
@@ -26,40 +26,40 @@ public:
 	virtual ~SPFeSpotLight();
 
     /** x coordinate of the light source */
-    gfloat x; 
-    guint x_set : 1;
+    float x; 
+    unsigned int x_set : 1;
     /** y coordinate of the light source */
-    gfloat y; 
-    guint y_set : 1;
+    float y; 
+    unsigned int y_set : 1;
     /** z coordinate of the light source */
-    gfloat z; 
-    guint z_set : 1;
+    float z; 
+    unsigned int z_set : 1;
     /** x coordinate of the point the source is pointing at */
-    gfloat pointsAtX;
-    guint pointsAtX_set : 1;
+    float pointsAtX;
+    unsigned int pointsAtX_set : 1;
     /** y coordinate of the point the source is pointing at */
-    gfloat pointsAtY;
-    guint pointsAtY_set : 1;
+    float pointsAtY;
+    unsigned int pointsAtY_set : 1;
     /** z coordinate of the point the source is pointing at */
-    gfloat pointsAtZ;
-    guint pointsAtZ_set : 1;
+    float pointsAtZ;
+    unsigned int pointsAtZ_set : 1;
     /** specular exponent (focus of the light) */
-    gfloat specularExponent;
-    guint specularExponent_set : 1;
+    float specularExponent;
+    unsigned int specularExponent_set : 1;
     /** limiting cone angle */
-    gfloat limitingConeAngle;
-    guint limitingConeAngle_set : 1;
+    float limitingConeAngle;
+    unsigned int limitingConeAngle_set : 1;
     //other fields
 
 protected:
 	virtual void build(SPDocument* doc, Inkscape::XML::Node* repr);
 	virtual void release();
 
-	virtual void set(unsigned int key, const gchar* value);
+	virtual void set(unsigned int key, char const* value);
 
 	virtual void update(SPCtx* ctx, unsigned int flags);
 
-	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, guint flags);
+	virtual Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags);
 };
 
 #endif /* !SP_FESPOTLIGHT_H_SEEN */
diff --git a/src/proj_pt.cpp b/src/proj_pt.cpp
index f5cca8fca..311b9a034 100644
--- a/src/proj_pt.cpp
+++ b/src/proj_pt.cpp
@@ -9,12 +9,14 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
+#include <glib.h>
+
 #include "proj_pt.h"
 #include "svg/stringstream.h"
 
 namespace Proj {
 
-Pt2::Pt2(const gchar *coord_str) {
+Pt2::Pt2(const char *coord_str) {
     if (!coord_str) {
         pt[0] = 0.0;
         pt[1] = 0.0;
@@ -22,7 +24,7 @@ Pt2::Pt2(const gchar *coord_str) {
         g_warning ("Coordinate string is empty. Creating default Pt2\n");
         return;
     }
-    gchar **coords = g_strsplit(coord_str, ":", 0);
+    char **coords = g_strsplit(coord_str, ":", 0);
     if (coords[0] == NULL || coords[1] == NULL || coords[2] == NULL) {
         g_strfreev (coords);
         g_warning ("Malformed coordinate string.\n");
@@ -52,7 +54,7 @@ Pt2::affine() {
   return Geom::Point (pt[0]/pt[2], pt[1]/pt[2]);
 }
 
-gchar *
+char *
 Pt2::coord_string() {
     Inkscape::SVGOStringStream os;
     os << pt[0] << " : "
@@ -61,7 +63,7 @@ Pt2::coord_string() {
     return g_strdup(os.str().c_str());
 }
 
-Pt3::Pt3(const gchar *coord_str) {
+Pt3::Pt3(const char *coord_str) {
     if (!coord_str) {
         pt[0] = 0.0;
         pt[1] = 0.0;
@@ -70,7 +72,7 @@ Pt3::Pt3(const gchar *coord_str) {
         g_warning ("Coordinate string is empty. Creating default Pt2\n");
         return;
     }
-    gchar **coords = g_strsplit(coord_str, ":", 0);
+    char **coords = g_strsplit(coord_str, ":", 0);
     if (coords[0] == NULL || coords[1] == NULL ||
         coords[2] == NULL || coords[3] == NULL) {
         g_strfreev (coords);
@@ -94,7 +96,7 @@ Pt3::normalize() {
     pt[3] = 1.0;
 }
 
-gchar *
+char *
 Pt3::coord_string() {
     Inkscape::SVGOStringStream os;
     os << pt[0] << " : "
diff --git a/src/svg/css-ostringstream.h b/src/svg/css-ostringstream.h
index 8cedb0979..2c66dff16 100644
--- a/src/svg/css-ostringstream.h
+++ b/src/svg/css-ostringstream.h
@@ -1,7 +1,6 @@
 #ifndef SVG_CSS_OSTRINGSTREAM_H_INKSCAPE
 #define SVG_CSS_OSTRINGSTREAM_H_INKSCAPE
 
-#include <glib.h>
 #include <sstream>
 
 namespace Inkscape {
@@ -42,8 +41,8 @@ public:
 
 #undef INK_CSS_STR_OP
 
-    gchar const *gcharp() const {
-        return reinterpret_cast<gchar const *>(ostr.str().c_str());
+    char const *gcharp() const {
+        return ostr.str().c_str();
     }
 
     std::string str() const {
diff --git a/src/svg/path-string.h b/src/svg/path-string.h
index 3a891873d..6c7e23017 100644
--- a/src/svg/path-string.h
+++ b/src/svg/path-string.h
@@ -15,10 +15,10 @@
 #ifndef SEEN_INKSCAPE_SVG_PATH_STRING_H
 #define SEEN_INKSCAPE_SVG_PATH_STRING_H
 
+#include <2geom/point.h>
+#include <cstdio>
 #include <glibmm/ustring.h>
 #include <string>
-#include <stdio.h>
-#include <2geom/point.h>
 
 namespace Inkscape {
 
diff --git a/src/svg/stringstream.h b/src/svg/stringstream.h
index d143abee8..c9cfdd601 100644
--- a/src/svg/stringstream.h
+++ b/src/svg/stringstream.h
@@ -1,7 +1,6 @@
 #ifndef INKSCAPE_STRINGSTREAM_H
 #define INKSCAPE_STRINGSTREAM_H
 
-#include <glib.h>
 #include <sstream>
 #include <string>
 
@@ -41,8 +40,8 @@ public:
 
 #undef INK_SVG_STR_OP
 
-    gchar const *gcharp() const {
-        return reinterpret_cast<gchar const *>(ostr.str().c_str());
+    char const *gcharp() const {
+        return ostr.str().c_str();
     }
 
     std::string str() const {
diff --git a/src/svg/svg-color.h b/src/svg/svg-color.h
index b8e317e3b..ea0896872 100644
--- a/src/svg/svg-color.h
+++ b/src/svg/svg-color.h
@@ -1,16 +1,15 @@
 #ifndef SVG_SVG_COLOR_H_SEEN
 #define SVG_SVG_COLOR_H_SEEN
 
-#include <glib.h>
-
+typedef unsigned int guint32;
 struct SVGICCColor;
 
-guint32 sp_svg_read_color(gchar const *str, unsigned int dfl);
-guint32 sp_svg_read_color(gchar const *str, gchar const **end_ptr, guint32 def);
+guint32 sp_svg_read_color(char const *str, unsigned int dfl);
+guint32 sp_svg_read_color(char const *str, char const **end_ptr, guint32 def);
 void sp_svg_write_color(char *buf, unsigned int buflen, unsigned int rgba32);
 
-bool sp_svg_read_icc_color( gchar const *str, gchar const **end_ptr, SVGICCColor* dest );
-bool sp_svg_read_icc_color( gchar const *str, SVGICCColor* dest );
-void icc_color_to_sRGB(SVGICCColor* dest, guchar* r, guchar* g, guchar* b);
+bool sp_svg_read_icc_color( char const *str, char const **end_ptr, SVGICCColor* dest );
+bool sp_svg_read_icc_color( char const *str, SVGICCColor* dest );
+void icc_color_to_sRGB(SVGICCColor* dest, unsigned char* r, unsigned char* g, unsigned char* b);
 
 #endif /* !SVG_SVG_COLOR_H_SEEN */
diff --git a/src/svg/svg.h b/src/svg/svg.h
index a7795b82e..6ce9db937 100644
--- a/src/svg/svg.h
+++ b/src/svg/svg.h
@@ -11,7 +11,7 @@
  *
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
-#include <glib.h>
+
 #include <vector>
 #include <cstring>
 #include <string>
@@ -28,13 +28,13 @@
  * Return FALSE and let val untouched on error
  */
 
-unsigned int sp_svg_number_read_f( const gchar *str, float *val );
-unsigned int sp_svg_number_read_d( const gchar *str, double *val );
+unsigned int sp_svg_number_read_f( const char *str, float *val );
+unsigned int sp_svg_number_read_d( const char *str, double *val );
 
 /*
  * No buffer overflow checking is done, so better wrap them if needed
  */
-unsigned int sp_svg_number_write_de( gchar *buf, int bufLen, double val, unsigned int tprec, int min_exp );
+unsigned int sp_svg_number_write_de( char *buf, int bufLen, double val, unsigned int tprec, int min_exp );
 
 /* Length */
 
@@ -47,24 +47,24 @@ unsigned int sp_svg_number_write_de( gchar *buf, int bufLen, double val, unsigne
  * Any return value pointer can be NULL
  */
 
-unsigned int sp_svg_length_read_computed_absolute( const gchar *str, float *length );
-std::vector<SVGLength> sp_svg_length_list_read( const gchar *str );
-unsigned int sp_svg_length_read_ldd( const gchar *str, SVGLength::Unit *unit, double *value, double *computed );
+unsigned int sp_svg_length_read_computed_absolute( const char *str, float *length );
+std::vector<SVGLength> sp_svg_length_list_read( const char *str );
+unsigned int sp_svg_length_read_ldd( const char *str, SVGLength::Unit *unit, double *value, double *computed );
 
 std::string sp_svg_length_write_with_units(SVGLength const &length);
 
-bool sp_svg_transform_read(gchar const *str, Geom::Affine *transform);
+bool sp_svg_transform_read(char const *str, Geom::Affine *transform);
 
-gchar *sp_svg_transform_write(Geom::Affine const &transform);
-gchar *sp_svg_transform_write(Geom::Affine const *transform);
+char *sp_svg_transform_write(Geom::Affine const &transform);
+char *sp_svg_transform_write(Geom::Affine const *transform);
 
 double sp_svg_read_percentage( const char * str, double def );
 
 /* NB! As paths can be long, we use here dynamic string */
 
 Geom::PathVector sp_svg_read_pathv( char const * str );
-gchar * sp_svg_write_path( Geom::PathVector const &p );
-gchar * sp_svg_write_path( Geom::Path const &p );
+char * sp_svg_write_path( Geom::PathVector const &p );
+char * sp_svg_write_path( Geom::Path const &p );
 
 #endif // SEEN_SP_SVG_H
 
diff --git a/src/xml/event.h b/src/xml/event.h
index 55e2add88..d25ea0e07 100644
--- a/src/xml/event.h
+++ b/src/xml/event.h
@@ -18,7 +18,7 @@
 #ifndef SEEN_INKSCAPE_XML_SP_REPR_ACTION_H
 #define SEEN_INKSCAPE_XML_SP_REPR_ACTION_H
 
-#include <glib.h>
+typedef unsigned int GQuark;
 #include <glibmm/ustring.h>
 
 #include <iterator>
diff --git a/src/xml/helper-observer.h b/src/xml/helper-observer.h
index 2f70ba792..c076b3e2c 100644
--- a/src/xml/helper-observer.h
+++ b/src/xml/helper-observer.h
@@ -1,12 +1,12 @@
-#ifndef __XML_HELPER_OBSERVER__
-#define __XML_HELPER_OBSERVER__
+#ifndef SEEN_XML_HELPER_OBSERVER
+#define SEEN_XML_HELPER_OBSERVER
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
 
 #include "node-observer.h"
 #include "node.h"
-#include "../sp-object.h"
-//#include "../sp-object-repr.h"
-#include <stddef.h>
-#include <sigc++/sigc++.h>
+#include "sp-object.h"
 
 namespace Inkscape {
     namespace XML {
diff --git a/src/xml/node-event-vector.h b/src/xml/node-event-vector.h
index e6396877d..416640b86 100644
--- a/src/xml/node-event-vector.h
+++ b/src/xml/node-event-vector.h
@@ -14,26 +14,11 @@
 #ifndef SEEN_INKSCAPE_XML_SP_REPR_EVENT_VECTOR
 #define SEEN_INKSCAPE_XML_SP_REPR_EVENT_VECTOR
 
-#include <glib.h>
-
 #include "xml/node.h"
 
 namespace Inkscape {
 namespace XML {
-
-/**
- * @brief Structure holding callbacks for node state changes
- * @deprecated Derive an observer object from the NodeObserver class instead
- */
-struct NodeEventVector {
-	/* Immediate signals */
-	void (* child_added) (Node *repr, Node *child, Node *ref, void * data);
-	void (* child_removed) (Node *repr, Node *child, Node *ref, void * data);
-	void (* attr_changed) (Node *repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
-	void (* content_changed) (Node *repr, const gchar *oldcontent, const gchar *newcontent, void * data);
-	void (* order_changed) (Node *repr, Node *child, Node *oldref, Node *newref, void * data);
-};
-
+struct NodeEventVector;
 }
 }
 
@@ -41,22 +26,45 @@ struct NodeEventVector {
  * @brief Generate events corresponding to the node's state
  * @deprecated Use Node::synthesizeEvents(NodeObserver &) instead
  */
-inline void sp_repr_synthesize_events (Inkscape::XML::Node *repr, const Inkscape::XML::NodeEventVector *vector, void * data) {
+inline void sp_repr_synthesize_events (Inkscape::XML::Node *repr, const Inkscape::XML::NodeEventVector *vector, void* data) {
 	repr->synthesizeEvents(vector, data);
 }
 /**
  * @brief Add a set of callbacks for node state changes and its associated data
  * @deprecated Use Node::addObserver() instead
  */                                                                                
-inline void sp_repr_add_listener (Inkscape::XML::Node *repr, const Inkscape::XML::NodeEventVector *vector, void * data) {
+inline void sp_repr_add_listener (Inkscape::XML::Node *repr, const Inkscape::XML::NodeEventVector *vector, void* data) {
 	repr->addListener(vector, data);
 }
 /**
  * @brief Remove a set of callbacks based on associated data
  * @deprecated Use Node::removeObserver() instead
  */
-inline void sp_repr_remove_listener_by_data (Inkscape::XML::Node *repr, void * data) {
+inline void sp_repr_remove_listener_by_data (Inkscape::XML::Node *repr, void* data) {
 	repr->removeListenerByData(data);
 }
 
+namespace Inkscape {
+namespace XML {
+
+/**
+ * @brief Structure holding callbacks for node state changes
+ * @deprecated Derive an observer object from the NodeObserver class instead
+ */
+struct NodeEventVector {
+	/* Immediate signals */
+	void (* child_added) (Node *repr, Node *child, Node *ref, void* data);
+	void (* child_removed) (Node *repr, Node *child, Node *ref, void* data);
+	void (* attr_changed) (Node *repr, char const *key, char const *oldval, char const *newval, bool is_interactive, void* data);
+	void (* content_changed) (Node *repr, char const *oldcontent, char const *newcontent, void * data);
+	void (* order_changed) (Node *repr, Node *child, Node *oldref, Node *newref, void* data);
+}
+#ifdef __GNUC__
+__attribute__((deprecated))
+#endif
+;
+
+}
+}
+
 #endif
diff --git a/src/xml/node-observer.h b/src/xml/node-observer.h
index d0c85d1dd..9c7e096e5 100644
--- a/src/xml/node-observer.h
+++ b/src/xml/node-observer.h
@@ -18,8 +18,8 @@
 #ifndef SEEN_INKSCAPE_XML_NODE_OBSERVER_H
 #define SEEN_INKSCAPE_XML_NODE_OBSERVER_H
 
-#include <glib.h>
 #include "util/share.h"
+typedef unsigned int GQuark;
 
 #ifndef INK_UNUSED
 #define INK_UNUSED(x) ((void)(x))
@@ -56,7 +56,9 @@ protected:
     NodeObserver() {}
 public:
     virtual ~NodeObserver() {}
-    
+
+    // FIXME: somebody needs to learn what "pure virtual" means
+
     /**
      * @brief Child addition callback
      *
diff --git a/src/xml/node.h b/src/xml/node.h
index c1977b0a8..8bb70acc0 100644
--- a/src/xml/node.h
+++ b/src/xml/node.h
@@ -18,7 +18,6 @@
 #ifndef SEEN_INKSCAPE_XML_NODE_H
 #define SEEN_INKSCAPE_XML_NODE_H
 
-#include <glibmm/value.h>
 #include <glibmm/ustring.h>
 #include "gc-anchored.h"
 #include "util/list.h"
@@ -100,7 +99,7 @@ public:
      *
      * @return Name for element nodes, NULL for others
      */
-    virtual gchar const *name() const=0;
+    virtual char const *name() const=0;
     /**
      * @brief Get the integer code corresponding to the node's name
      * @return GQuark code corresponding to the name
@@ -131,7 +130,7 @@ public:
      *
      * @return The node's content
      */
-    virtual gchar const *content() const=0;
+    virtual char const *content() const=0;
     
     /**
      * @brief Get the string representation of a node's attribute
@@ -144,7 +143,7 @@ public:
      *
      * @param key The name of the node's attribute
      */
-    virtual gchar const *attribute(gchar const *key) const=0;
+    virtual char const *attribute(char const *key) const=0;
     
     /**
      * @brief Get a list of the node's attributes
@@ -168,7 +167,7 @@ public:
      * @param partial_name The string to match against all attributes
      * @return true if there is such an attribute, false otherwise
      */
-    virtual bool matchAttributeName(gchar const *partial_name) const=0;
+    virtual bool matchAttributeName(char const *partial_name) const=0;
 
     /*@}*/
     
@@ -193,7 +192,7 @@ public:
      *
      * @param value The node's new content
      */
-    virtual void setContent(gchar const *value)=0;
+    virtual void setContent(char const *value)=0;
     
     //@{
     /**
@@ -205,7 +204,7 @@ public:
      * @param value The new value of the attribute
      * @param is_interactive Ignored
      */
-    virtual void setAttribute(gchar const *key, gchar const *value, bool is_interactive=false)=0;
+    virtual void setAttribute(char const *key, char const *value, bool is_interactive=false)=0;
 
     void setAttribute(char const *key, Glib::ustring const &value, bool is_interactive=false)
     {
@@ -399,7 +398,7 @@ public:
      * @param src The node to merge into this node
      * @param key The attribute to use as the identity attribute
      */
-    virtual void mergeFrom(Node const *src, gchar const *key)=0;
+    virtual void mergeFrom(Node const *src, char const *key)=0;
     
     /*@}*/
 
diff --git a/src/xml/pi-node.h b/src/xml/pi-node.h
index 1f892f97a..76a3dc741 100644
--- a/src/xml/pi-node.h
+++ b/src/xml/pi-node.h
@@ -14,7 +14,6 @@
 #ifndef SEEN_INKSCAPE_XML_PI_NODE_H
 #define SEEN_INKSCAPE_XML_PI_NODE_H
 
-#include <glib.h>
 #include "xml/simple-node.h"
 
 namespace Inkscape {
diff --git a/src/xml/quote.h b/src/xml/quote.h
index 8e3bca0eb..393bdf46e 100644
--- a/src/xml/quote.h
+++ b/src/xml/quote.h
@@ -1,7 +1,7 @@
 #ifndef SEEN_XML_QUOTE_H
 #define SEEN_XML_QUOTE_H
 
-#include <stddef.h>
+#include <cstddef>
 
 size_t xml_quoted_strlen(char const *val);
 char *xml_quote_strdup(char const *src);
diff --git a/src/xml/rebase-hrefs.h b/src/xml/rebase-hrefs.h
index 5baf96516..34afe6076 100644
--- a/src/xml/rebase-hrefs.h
+++ b/src/xml/rebase-hrefs.h
@@ -1,7 +1,6 @@
 #ifndef REBASE_HREFS_H_SEEN
 #define REBASE_HREFS_H_SEEN
 
-#include <glib.h>
 #include "util/list.h"
 #include "xml/attribute-record.h"
 class SPDocument;
@@ -9,7 +8,7 @@ class SPDocument;
 namespace Inkscape {
 namespace XML {
 
-std::string calc_abs_doc_base(gchar const *doc_base);
+std::string calc_abs_doc_base(char const *doc_base);
 
 /**
  * Change relative hrefs in doc to be relative to \a new_base instead of doc.base.
@@ -18,7 +17,7 @@ std::string calc_abs_doc_base(gchar const *doc_base);
  *
  * @param spns True if doc should contain sodipodi:absref attributes.
  */
-void rebase_hrefs(SPDocument *doc, gchar const *new_base, bool spns);
+void rebase_hrefs(SPDocument *doc, char const *new_base, bool spns);
 
 /**
  * Change relative xlink:href attributes to be relative to \a new_abs_base instead of old_abs_base.
@@ -26,8 +25,8 @@ void rebase_hrefs(SPDocument *doc, gchar const *new_base, bool spns);
  * Note that old_abs_base and new_abs_base must each be non-NULL, absolute directory paths.
  */
 Inkscape::Util::List<AttributeRecord const> rebase_href_attrs(
-    gchar const *old_abs_base,
-    gchar const *new_abs_base,
+    char const *old_abs_base,
+    char const *new_abs_base,
     Inkscape::Util::List<AttributeRecord const> attributes);
 
 
diff --git a/src/xml/repr.h b/src/xml/repr.h
index e691eaa7f..e1d7fdfd6 100644
--- a/src/xml/repr.h
+++ b/src/xml/repr.h
@@ -14,7 +14,6 @@
 #ifndef SEEN_SP_REPR_H
 #define SEEN_SP_REPR_H
 
-#include <glib.h>
 #include <glibmm/quark.h>
 
 #include "xml/node.h"
@@ -43,55 +42,55 @@ class Point;
 }
 
 /* SPXMLNs */
-char const *sp_xml_ns_uri_prefix(gchar const *uri, gchar const *suggested);
-char const *sp_xml_ns_prefix_uri(gchar const *prefix);
+char const *sp_xml_ns_uri_prefix(char const *uri, char const *suggested);
+char const *sp_xml_ns_prefix_uri(char const *prefix);
 
-Inkscape::XML::Document *sp_repr_document_new(gchar const *rootname);
+Inkscape::XML::Document *sp_repr_document_new(char const *rootname);
 
 /* IO */
 
-Inkscape::XML::Document *sp_repr_read_file(gchar const *filename, gchar const *default_ns);
-Inkscape::XML::Document *sp_repr_read_mem(gchar const *buffer, int length, gchar const *default_ns);
+Inkscape::XML::Document *sp_repr_read_file(char const *filename, char const *default_ns);
+Inkscape::XML::Document *sp_repr_read_mem(char const *buffer, int length, char const *default_ns);
 void sp_repr_write_stream(Inkscape::XML::Node *repr, Inkscape::IO::Writer &out,
-                          gint indent_level,  bool add_whitespace, Glib::QueryQuark elide_prefix,
+                          int indent_level,  bool add_whitespace, Glib::QueryQuark elide_prefix,
                           int inlineattrs, int indent,
-                          gchar const *old_href_base = NULL,
-                          gchar const *new_href_base = NULL);
-Inkscape::XML::Document *sp_repr_read_buf (const Glib::ustring &buf, const gchar *default_ns);
+                          char const *old_href_base = NULL,
+                          char const *new_href_base = NULL);
+Inkscape::XML::Document *sp_repr_read_buf (const Glib::ustring &buf, const char *default_ns);
 Glib::ustring sp_repr_save_buf(Inkscape::XML::Document *doc);
 
 // TODO convert to std::string
 void sp_repr_save_stream(Inkscape::XML::Document *doc, FILE *to_file,
-                         gchar const *default_ns = NULL, bool compress = false,
-                         gchar const *old_href_base = NULL,
-                         gchar const *new_href_base = NULL);
+                         char const *default_ns = NULL, bool compress = false,
+                         char const *old_href_base = NULL,
+                         char const *new_href_base = NULL);
 
-bool sp_repr_save_file(Inkscape::XML::Document *doc, gchar const *filename, gchar const *default_ns=NULL);
-bool sp_repr_save_rebased_file(Inkscape::XML::Document *doc, gchar const *filename_utf8,
-                               gchar const *default_ns,
-                               gchar const *old_base, gchar const *new_base_filename);
+bool sp_repr_save_file(Inkscape::XML::Document *doc, char const *filename, char const *default_ns=NULL);
+bool sp_repr_save_rebased_file(Inkscape::XML::Document *doc, char const *filename_utf8,
+                               char const *default_ns,
+                               char const *old_base, char const *new_base_filename);
 
 
 /* CSS stuff */
 
 SPCSSAttr *sp_repr_css_attr_new(void);
 void sp_repr_css_attr_unref(SPCSSAttr *css);
-SPCSSAttr *sp_repr_css_attr(Inkscape::XML::Node *repr, gchar const *attr);
+SPCSSAttr *sp_repr_css_attr(Inkscape::XML::Node *repr, char const *attr);
 SPCSSAttr *sp_repr_css_attr_parse_color_to_fill(const Glib::ustring &text);
-SPCSSAttr *sp_repr_css_attr_inherited(Inkscape::XML::Node *repr, gchar const *attr);
+SPCSSAttr *sp_repr_css_attr_inherited(Inkscape::XML::Node *repr, char const *attr);
 
-gchar const *sp_repr_css_property(SPCSSAttr *css, gchar const *name, gchar const *defval);
-void sp_repr_css_set_property(SPCSSAttr *css, gchar const *name, gchar const *value);
-void sp_repr_css_unset_property(SPCSSAttr *css, gchar const *name);
-bool sp_repr_css_property_is_unset(SPCSSAttr *css, gchar const *name);
-double sp_repr_css_double_property(SPCSSAttr *css, gchar const *name, double defval);
+char const *sp_repr_css_property(SPCSSAttr *css, char const *name, char const *defval);
+void sp_repr_css_set_property(SPCSSAttr *css, char const *name, char const *value);
+void sp_repr_css_unset_property(SPCSSAttr *css, char const *name);
+bool sp_repr_css_property_is_unset(SPCSSAttr *css, char const *name);
+double sp_repr_css_double_property(SPCSSAttr *css, char const *name, double defval);
 
 void sp_repr_css_write_string(SPCSSAttr *css, Glib::ustring &str);
-void sp_repr_css_set(Inkscape::XML::Node *repr, SPCSSAttr *css, gchar const *key);
+void sp_repr_css_set(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key);
 void sp_repr_css_merge(SPCSSAttr *dst, SPCSSAttr *src);
-void sp_repr_css_attr_add_from_string(SPCSSAttr *css, const gchar *data);
-void sp_repr_css_change(Inkscape::XML::Node *repr, SPCSSAttr *css, gchar const *key);
-void sp_repr_css_change_recursive(Inkscape::XML::Node *repr, SPCSSAttr *css, gchar const *key);
+void sp_repr_css_attr_add_from_string(SPCSSAttr *css, const char *data);
+void sp_repr_css_change(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key);
+void sp_repr_css_change_recursive(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key);
 
 void sp_repr_css_print(SPCSSAttr *css);
 
@@ -109,15 +108,15 @@ inline void sp_repr_unparent(Inkscape::XML::Node *repr) {
 bool sp_repr_is_meta_element(const Inkscape::XML::Node *node);
 
 /* Convenience */
-unsigned sp_repr_get_boolean(Inkscape::XML::Node *repr, gchar const *key, unsigned *val);
-unsigned sp_repr_get_int(Inkscape::XML::Node *repr, gchar const *key, int *val);
-unsigned sp_repr_get_double(Inkscape::XML::Node *repr, gchar const *key, double *val);
-unsigned sp_repr_set_boolean(Inkscape::XML::Node *repr, gchar const *key, unsigned val);
-unsigned sp_repr_set_int(Inkscape::XML::Node *repr, gchar const *key, int val);
-unsigned sp_repr_set_css_double(Inkscape::XML::Node *repr, gchar const *key, double val);
-unsigned sp_repr_set_svg_double(Inkscape::XML::Node *repr, gchar const *key, double val);
-unsigned sp_repr_set_point(Inkscape::XML::Node *repr, gchar const *key, Geom::Point const & val);
-unsigned sp_repr_get_point(Inkscape::XML::Node *repr, gchar const *key, Geom::Point *val);
+unsigned sp_repr_get_boolean(Inkscape::XML::Node *repr, char const *key, unsigned *val);
+unsigned sp_repr_get_int(Inkscape::XML::Node *repr, char const *key, int *val);
+unsigned sp_repr_get_double(Inkscape::XML::Node *repr, char const *key, double *val);
+unsigned sp_repr_set_boolean(Inkscape::XML::Node *repr, char const *key, unsigned val);
+unsigned sp_repr_set_int(Inkscape::XML::Node *repr, char const *key, int val);
+unsigned sp_repr_set_css_double(Inkscape::XML::Node *repr, char const *key, double val);
+unsigned sp_repr_set_svg_double(Inkscape::XML::Node *repr, char const *key, double val);
+unsigned sp_repr_set_point(Inkscape::XML::Node *repr, char const *key, Geom::Point const & val);
+unsigned sp_repr_get_point(Inkscape::XML::Node *repr, char const *key, Geom::Point *val);
 
 int sp_repr_compare_position(Inkscape::XML::Node const *first, Inkscape::XML::Node const *second);
 
@@ -135,16 +134,16 @@ int sp_repr_compare_position(Inkscape::XML::Node const *first, Inkscape::XML::No
  * @relatesalso Inkscape::XML::Node
  */
 Inkscape::XML::Node *sp_repr_lookup_name(Inkscape::XML::Node *repr,
-                                         gchar const *name,
-                                         gint maxdepth = -1);
+                                         char const *name,
+                                         int maxdepth = -1);
 
 Inkscape::XML::Node const *sp_repr_lookup_name(Inkscape::XML::Node const *repr,
-                                               gchar const *name,
-                                               gint maxdepth = -1);
+                                               char const *name,
+                                               int maxdepth = -1);
 
 Inkscape::XML::Node *sp_repr_lookup_child(Inkscape::XML::Node *repr,
-                                          gchar const *key,
-                                          gchar const *value);
+                                          char const *key,
+                                          char const *value);
 
 
 inline Inkscape::XML::Node *sp_repr_document_first_child(Inkscape::XML::Document const *doc) {
diff --git a/src/xml/simple-node.h b/src/xml/simple-node.h
index 7c5eb8fbd..1fcb9193b 100644
--- a/src/xml/simple-node.h
+++ b/src/xml/simple-node.h
@@ -18,7 +18,7 @@
 #ifndef SEEN_INKSCAPE_XML_SIMPLE_NODE_H
 #define SEEN_INKSCAPE_XML_SIMPLE_NODE_H
 
-#include <glib.h> // g_assert()
+#include <cassert>
 
 #include "xml/node.h"
 #include "xml/attribute-record.h"
@@ -38,7 +38,7 @@ class SimpleNode
 : virtual public Node, public Inkscape::GC::Managed<>
 {
 public:
-    gchar const *name() const;
+    char const *name() const;
     int code() const { return _name; }
     void setCodeUnsafe(int code) {
         _name = code;
@@ -83,14 +83,14 @@ public:
     unsigned position() const;
     void setPosition(int pos);
 
-    gchar const *attribute(gchar const *key) const;
-    void setAttribute(gchar const *key, gchar const *value, bool is_interactive=false);
-    bool matchAttributeName(gchar const *partial_name) const;
+    char const *attribute(char const *key) const;
+    void setAttribute(char const *key, char const *value, bool is_interactive=false);
+    bool matchAttributeName(char const *partial_name) const;
 
-    gchar const *content() const;
-    void setContent(gchar const *value);
+    char const *content() const;
+    void setContent(char const *value);
 
-    void mergeFrom(Node const *src, gchar const *key);
+    void mergeFrom(Node const *src, char const *key);
 
     Inkscape::Util::List<AttributeRecord const> attributeList() const {
         return _attributes;
@@ -100,7 +100,7 @@ public:
     void synthesizeEvents(NodeObserver &observer);
 
     void addListener(NodeEventVector const *vector, void *data) {
-        g_assert(vector != NULL);
+        assert(vector != NULL);
         _observers.addListener(*vector, data);
     }
     void addObserver(NodeObserver &observer) {