Author: Carlos Lopez <[email protected]>
Date: Sat Jul 21 19:31:30 2012 +0200
Rectangle: fix cairorender of alpha inverted rectangle
---
synfig-core/src/modules/mod_geometry/rectangle.cpp | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/synfig-core/src/modules/mod_geometry/rectangle.cpp
b/synfig-core/src/modules/mod_geometry/rectangle.cpp
index a64f69e..40f5b65 100644
--- a/synfig-core/src/modules/mod_geometry/rectangle.cpp
+++ b/synfig-core/src/modules/mod_geometry/rectangle.cpp
@@ -680,9 +680,19 @@ Rectangle::accelerated_cairorender(Context
context,cairo_surface_t *surface,int
cairo_set_source_rgba(subcr, r, g, b, a);
cairo_paint(subcr);
// now remove the area of the intersection rectangle
- cairo_rectangle(subcr, inter_min[0], inter_min[1],
inter_max[0]-inter_min[0], inter_max[1]-inter_min[1]);
+ cairo_save(subcr);
+ double width (inter_max[0]-inter_min[0]);
+ double height(inter_max[1]-inter_min[1]);
+ double tx((br[0]-tl[0])/2/pw);
+ double ty((br[1]-tl[1])/2/ph);
+ double sx(1/pw);
+ double sy(1/ph);
+ cairo_translate(subcr, tx , ty);
+ cairo_scale(subcr, sx, sy);
+ cairo_rectangle(subcr, inter_min[0], inter_min[1],
width, height);
cairo_set_operator(subcr, CAIRO_OPERATOR_CLEAR);
- cairo_fill(cr);
+ cairo_fill(subcr);
+ cairo_restore(subcr);
// now let's paint the inverted rectangle with the hole
on the rendered context
cairo_save(cr);
cairo_set_source_surface(cr, subimage, 0, 0);
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