update to trunk

(bzr r13645.1.168)

3 files changed, 297 insertions, 4 deletions

diff --git a/src/display/canvas-temporary-item-list.h b/src/display/canvas-temporary-item-list.h
index 471bb99b9..6b0e5796b 100644
--- a/src/display/canvas-temporary-item-list.h
+++ b/src/display/canvas-temporary-item-list.h
@@ -14,6 +14,7 @@
 
 struct SPCanvasItem;
 class SPDesktop;
+class SPViewBox;
 
 namespace Inkscape {
 namespace Display {
diff --git a/src/display/sp-canvas.cpp b/src/display/sp-canvas.cpp
index 416c2c804..68eae0a65 100644
--- a/src/display/sp-canvas.cpp
+++ b/src/display/sp-canvas.cpp
@@ -29,18 +29,24 @@
 #include "helper/sp-marshal.h"
 #include <2geom/rect.h>
 #include <2geom/affine.h>
-#include "display/cairo-utils.h"
 #include "display/sp-canvas.h"
 #include "display/sp-canvas-group.h"
+#include "display/rendermode.h"
+#include "display/cairo-utils.h"
+#include "display/cairo-templates.h"
+#include "display/drawing-context.h"
+#include "display/drawing-item.h"
+#include "display/nr-filter-colormatrix.h"
+#include "display/canvas-arena.h"
 #include "preferences.h"
 #include "inkscape.h"
 #include "sodipodi-ctrlrect.h"
 #include "cms-system.h"
-#include "display/rendermode.h"
-#include "display/cairo-utils.h"
 #include "debug/gdk-event-latency-tracker.h"
 #include "desktop.h"
 #include "color.h"
+#include <iomanip>
+#include <glibmm/i18n.h>
 
 using Inkscape::Debug::GdkEventLatencyTracker;
 
@@ -1888,6 +1894,19 @@ SPCanvasGroup *SPCanvas::getRoot()
     return SP_CANVAS_GROUP(_root);
 }
 
+gdouble grayscale_value_matrix[20] = {
+   0.21, 0.72, 0.072, 0, 0,
+   0.21, 0.72, 0.072, 0, 0,
+   0.21, 0.72, 0.072, 0, 0,
+   0   , 0   , 0    , 1, 0
+   };
+cairo_surface_t *surface_rotated;
+cairo_surface_t *surface_origin;
+cairo_surface_t *surface_measure;
+double start_angle = 0;
+bool started = false;
+bool rotated = false;
+
 void SPCanvas::scrollTo(double cx, double cy, unsigned int clear, bool is_scrolling)
 {
     GtkAllocation allocation;
@@ -1910,9 +1929,14 @@ void SPCanvas::scrollTo(double cx, double cy, unsigned int clear, bool is_scroll
     cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
     // Paint the background
     cairo_translate(cr, -ix, -iy);
+    if (rotated) {
+        cairo_translate(cr, dx, dy);
+        rotated = false;
+    }
     cairo_set_source(cr, _background);
     cairo_paint(cr);
     // Copy the old backing store contents
+    
     cairo_set_source_surface(cr, _backing_store, _x0, _y0);
     cairo_rectangle(cr, _x0, _y0, allocation.width, allocation.height);
     cairo_clip(cr);
@@ -1949,6 +1973,271 @@ void SPCanvas::scrollTo(double cx, double cy, unsigned int clear, bool is_scroll
     addIdle();
 }
 
+void SPCanvas::startRotateTo(double angle)
+{
+    if (!_backing_store || started) {
+        return; 
+    }
+    start_angle = angle;
+    started = true;
+    GtkAllocation allocation;
+    gtk_widget_get_allocation(&_widget, &allocation);
+    int half_w = allocation.width/2;
+    int half_h = allocation.height/2;
+    int half_min = std::min(half_w,half_h);
+    
+    cairo_surface_t *new_backing_store = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, allocation.width, allocation.height);
+    cairo_t *cr = cairo_create(new_backing_store);
+    cairo_arc(cr, half_w, half_h, half_min-15, 0, 2*M_PI);
+    cairo_fill(cr);
+    cairo_set_operator(cr, CAIRO_OPERATOR_IN);
+    cairo_set_source_surface(cr, _backing_store, 0, 0);
+    cairo_paint(cr);
+    cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+    cairo_arc(cr, half_w, half_h, half_min-16, 0, 2*M_PI);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
+    cairo_stroke(cr);
+    cairo_destroy(cr);
+    surface_rotated = new_backing_store;
+    
+    cairo_surface_t *new_backing_store_measure = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, allocation.width, allocation.height);
+    cr = cairo_create(new_backing_store_measure);
+    cairo_arc(cr, half_w, half_h, half_min-15, 0, 2*M_PI);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.2);
+    cairo_fill(cr);
+    cairo_translate(cr, half_w, half_h);
+    cairo_select_font_face(cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size(cr, 10.0);
+    for (gint x = 0; x < 360 ; x++){
+        gint ang = 360 - x ;//+ 90;
+        if (ang > 180) {
+            ang -= 360;
+        }
+        double rot = (-180.0 + x)*(M_PI/180.);
+        double dist = half_min-9;
+        gint inverse = 1;
+        if((x) < 91 || (x) > 270) {
+            inverse = -1;
+        }
+        if(x%10 == 0) {
+            cairo_rotate(cr, -rot);
+            cairo_text_extents_t extents;
+            std::string s = std::to_string(ang) + "º";
+            cairo_text_extents(cr, s.c_str(), &extents);
+            //std::cout << extents.width/2 << "extents.x_bearing\n";
+            cairo_translate(cr, (extents.width/2) * inverse * -1, (dist + ((extents.height/2)* inverse)));
+            if((x) < 91 || (x) > 270) {
+                cairo_rotate(cr, 180*(M_PI/180.0));
+            }
+            cairo_text_path(cr, s.c_str());
+            if((x) < 91 || (x) > 270) {
+                cairo_rotate(cr, -180*(M_PI/180.0));
+            }
+            cairo_translate(cr, (extents.width/2) * inverse , (dist + ((extents.height/2)* inverse)) * -1);
+            cairo_set_source_rgba (cr, 1, 1, 1, 1);
+            cairo_fill(cr);
+            cairo_rotate(cr, rot);
+        }
+        cairo_rotate(cr, x*(M_PI/180.));
+        if(x%5 == 0) {
+            cairo_move_to(cr, 0, half_min-30); 
+            cairo_line_to(cr, 0, half_min-17);
+        } else { 
+            cairo_move_to(cr, 0, half_min-20);
+            cairo_line_to(cr, 0, half_min-15); 
+        }
+        cairo_line_to(cr, 0, half_min-15);
+        cairo_set_source_rgba (cr, 0, 0, 0, 0.4);
+        cairo_set_line_width (cr,1);
+        cairo_stroke(cr);
+        cairo_rotate(cr, -x*(M_PI/180.));
+    }
+    cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
+    cairo_translate(cr, -half_w, -half_h);
+    cairo_arc(cr, half_w, half_h, half_min-30, 0, 2*M_PI);
+    cairo_set_source_rgba (cr, 1, 1, 1, 1);
+    cairo_fill(cr);
+    cairo_translate(cr, half_w, half_h);
+    cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+    cairo_rotate(cr, start_angle*(M_PI/180.));
+    cairo_move_to(cr, 0, 0); 
+    cairo_line_to(cr, 0, (half_min-17) * -1);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.25);
+    cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND); 
+    cairo_set_line_width (cr,5);
+    cairo_stroke(cr);
+    cairo_move_to(cr, 0, 0); 
+    cairo_line_to(cr, 0, (half_min-17) * -1);
+    cairo_set_source_rgba (cr, 1, 0, 0, 0.9);
+    cairo_set_line_width (cr,1);
+    cairo_stroke(cr);
+    cairo_rotate(cr, -start_angle*(M_PI/180.));
+    cairo_destroy(cr);
+    surface_measure = new_backing_store_measure;
+
+    cairo_surface_t *new_backing_store_grey = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, allocation.width, allocation.height);
+    cr = cairo_create(new_backing_store_grey);
+    cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+    cairo_set_source_surface(cr, _backing_store, 0, 0);
+    cairo_paint(cr);
+    Inkscape::Filters::FilterColorMatrix::ColorMatrixMatrix _grayscale_colormatrix = std::vector<gdouble> (grayscale_value_matrix, grayscale_value_matrix + 20);
+    cairo_surface_t *out = ink_cairo_surface_create_identical(new_backing_store_grey);
+    ink_cairo_surface_filter(new_backing_store_grey, out, _grayscale_colormatrix);
+    cairo_set_source_surface(cr, out, 0, 0);
+    cairo_surface_destroy(out);
+    cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint(cr);
+    cairo_destroy(cr);
+    surface_origin  = new_backing_store_grey;
+}
+
+bool SPCanvas::endRotateTo()
+{
+    if (!_backing_store || !started) {
+        return false; 
+    }
+    started = false;
+    surface_rotated = NULL;
+    surface_origin  = NULL;
+    gtk_widget_queue_draw(GTK_WIDGET(this));
+    dirtyAll();
+    addIdle();
+    rotated = true;
+    return true;
+}
+
+void SPCanvas::clearRotateTo()
+{
+    if (!started) {
+        return; 
+    }
+    gtk_widget_queue_draw(GTK_WIDGET(this));
+    dirtyAll();
+    addIdle();
+}
+
+void SPCanvas::rotateTo(double angle)
+{
+    if (!_backing_store || !started) {
+        return; 
+    }
+    GtkAllocation allocation;
+    gtk_widget_get_allocation(&_widget, &allocation);
+    int half_w = allocation.width/2;
+    int half_h = allocation.height/2;
+    int half_min = std::min(half_w,half_h);
+    cairo_surface_t *new_backing_store = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, allocation.width, allocation.height);
+    cairo_t *cr = cairo_create(new_backing_store);
+    cairo_set_source_surface(cr, surface_origin, 0, 0);
+    cairo_paint(cr);
+    cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
+    cairo_paint(cr);
+    cairo_pattern_t *source_pattern;
+    cairo_matrix_t matrix;
+    source_pattern = cairo_pattern_create_for_surface (surface_rotated);
+    cairo_matrix_init_identity (&matrix);
+    cairo_matrix_translate (&matrix, allocation.width/2.0, allocation.height/2.0);
+    cairo_matrix_rotate (&matrix, Geom::rad_from_deg(angle - start_angle) * -1);
+    cairo_matrix_translate (&matrix, -allocation.width/2.0, -allocation.height/2.0);
+    cairo_pattern_set_matrix (source_pattern, &matrix);
+    cairo_set_source(cr, source_pattern);
+    cairo_paint(cr);
+    cairo_set_source_surface(cr, surface_measure, 0, 0);
+    cairo_paint(cr);
+    cairo_translate(cr, half_w, half_h);
+    cairo_rotate(cr, angle*(M_PI/180.));
+    cairo_move_to(cr, 0, 0); 
+    cairo_line_to(cr, 0, (half_min-17) * -1);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.25);
+    cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND); 
+    cairo_set_line_width (cr,5);
+    cairo_stroke(cr);
+    cairo_move_to(cr, 0, 0); 
+    cairo_line_to(cr, 0, (half_min-17) * -1);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.9);
+    cairo_set_line_width (cr,1);
+    cairo_stroke(cr);
+    cairo_move_to(cr, 0, 0); 
+    cairo_line_to(cr, 0, (half_min-17) * -1);
+    cairo_set_source_rgba (cr, 1, 0, 0, 0.9);
+    const double dashed[] = {6.0, 3.0};
+    int len  = sizeof(dashed) / sizeof(dashed[0]);
+    cairo_set_dash(cr, dashed, len, 1);
+    cairo_stroke(cr);
+    cairo_translate(cr, -half_w, -half_h);
+    cairo_set_source_rgba (cr, 1, 1, 1, 0.25);
+    cairo_arc(cr, half_w, half_h, 7, 0, 2*M_PI);
+    cairo_fill(cr);
+    cairo_set_source_rgba (cr, 1, 0, 0, 0.7);
+    cairo_arc(cr, half_w, half_h, 5, 0, 2*M_PI);
+    cairo_fill(cr);
+    cairo_translate(cr, half_w, half_h);
+    cairo_rotate(cr, -angle*(M_PI/180.));
+    cairo_select_font_face(cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size(cr, 15.0);
+    cairo_text_extents_t extents;
+    std::ostringstream s;
+    s << _("Original angle ") << std::fixed << std::setprecision(2) << start_angle << "º";
+    cairo_text_extents(cr, s.str().c_str(), &extents);
+    cairo_translate(cr, half_w - extents.width -15 ,-half_h + 25);
+    cairo_set_source_rgba (cr, 1, 1, 1, 1);
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (half_w - extents.width -15) *-1 ,(-half_h + 25) *-1);
+    s.str("");
+    s << _("New angle ") << std::fixed << std::setprecision(2) << angle << "º";
+    cairo_text_extents(cr, s.str().c_str(), &extents);
+    cairo_translate(cr, half_w - extents.width -15 ,-half_h + 45);
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (half_w - extents.width -15) *-1 ,(-half_h + 45) *-1);
+    s.str("");
+    s << _("Gap ") << std::fixed << std::setprecision(2) << std::abs(start_angle-angle) << "º";
+    cairo_text_extents(cr, s.str().c_str(), &extents);
+    cairo_translate(cr, half_w - extents.width -15 ,-half_h + 65);
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (half_w - extents.width -15) *-1 ,(-half_h + 65) *-1);
+    cairo_translate(cr, -half_w + 10 ,-half_h + 25);
+    s.str("");
+    cairo_set_font_size(cr, 12.0);
+    s << _("Normal mode, 1º round step");
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (-half_w +10) * -1 ,(-half_h + 25) * -1);
+    cairo_translate(cr, -half_w + 10 ,-half_h + 40);
+    s.str("");
+    s << _("+ALT, Fractional degrees");
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (-half_w + 10) * -1 ,(-half_h + 40) * -1);
+    cairo_translate(cr, -half_w + 10 ,-half_h + 55);
+    s.str("");
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    s << _("+CTRL, ") << 180.0/prefs->getInt("/options/rotationsnapsperpi/value", 12) << _("º round step");
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (-half_w + 10) * -1 ,(-half_h + 55) * -1);
+    cairo_translate(cr, -half_w + 10 ,-half_h + 70);
+    s.str("");
+    s << _("+SHIFT, Reset");
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    cairo_translate(cr, (-half_w + 10) * -1 ,(-half_h + 70) * -1);
+    cairo_translate(cr, -half_w + 10 ,-half_h + 85);
+    s.str("");
+    s << _("+CTRL+SHIFT, 0º");
+    cairo_text_path(cr, s.str().c_str());
+    cairo_fill(cr);
+    //cairo_translate(cr, (-half_w + 10) * -1 ,(-half_h + 60) * -1);
+    cairo_destroy(cr);
+    cairo_surface_destroy(_backing_store);
+    _backing_store = new_backing_store;
+    cairo_pattern_destroy (source_pattern);
+    gtk_widget_queue_draw(GTK_WIDGET(this));
+    addIdle();
+}
+
 void SPCanvas::updateNow()
 {
     if (_need_update) {
diff --git a/src/display/sp-canvas.h b/src/display/sp-canvas.h
index 78d96d728..21b6760f2 100644
--- a/src/display/sp-canvas.h
+++ b/src/display/sp-canvas.h
@@ -72,7 +72,10 @@ GType sp_canvas_get_type() G_GNUC_CONST;
 struct SPCanvas {
     /// Scrolls canvas to specific position (cx and cy are measured in screen pixels).
     void scrollTo(double cx, double cy, unsigned int clear, bool is_scrolling = false);
-
+    void startRotateTo(double angle);
+    void rotateTo(double angle);
+    bool endRotateTo();
+    void clearRotateTo();
     /// Synchronously updates the canvas if necessary.
     void updateNow();