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tweak canvas on_expose_event() handler to avoid unnecessary save/paint/restore

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This commit is contained in:
Paul Davis 2014-11-10 20:34:20 -05:00
parent fdcb792358
commit 12b715e6fa
1 changed files with 1 additions and 5 deletions
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6
libs/canvas/canvas.cc
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@ -766,14 +766,10 @@ GtkCanvas::on_expose_event (GdkEventExpose* ev)
/* draw background color */
draw_context->save ();
draw_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
draw_context->clip ();
draw_context->set_operator (Cairo::OPERATOR_SOURCE);
draw_context->clip_preserve ();
set_source_rgba (draw_context, _bg_color);
draw_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
draw_context->fill ();
draw_context->restore ();
/* render canvas */