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if _need_bg is set to false in a CairoWidget, then don't actually draw the background

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This commit is contained in:
Paul Davis 2015-07-23 17:38:04 -04:00
parent b6c4ae46d0
commit a48684c692
1 changed files with 14 additions and 8 deletions
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22
libs/gtkmm2ext/cairo_widget.cc
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@ -183,15 +183,21 @@ CairoWidget::on_expose_event (GdkEventExpose *ev)
#endif
cr->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
cr->clip_preserve ();
/* paint expose area the color of the parent window bg
*/
Gdk::Color bg (get_parent_bg());
cr->set_source_rgb (bg.get_red_p(), bg.get_green_p(), bg.get_blue_p());
cr->fill ();
if (_need_bg) {
cr->clip_preserve ();
/* paint expose area the color of the parent window bg
*/
Gdk::Color bg (get_parent_bg());
cr->set_source_rgb (bg.get_red_p(), bg.get_green_p(), bg.get_blue_p());
cr->fill ();
} else {
std::cerr << get_name() << " skipped bg fill\n";
cr->clip ();
}
cairo_rectangle_t expose_area;
expose_area.x = ev->area.x;