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Fix paint clipping region with GTK+ >= 3.20

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Apparently the clip is no longer set properly. Fixes wxDC::Clear() overwriting
areas outside the window. Problem can be seen in the Audacity toolbars.

(cherry picked from commit bca7313499)
This commit is contained in:
Paul Cornett
2016-11-03 09:14:30 -07:00
parent 4206e4ce1c
commit cd8811bf14
1 changed files with 13 additions and 1 deletions
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14
src/gtk/window.cpp
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@@ -4099,9 +4099,21 @@ void wxWindowGTK::GTKSendPaintEvents(const GdkRegion* region)
#endif
{
#ifdef __WXGTK3__
m_paintContext = cr;
{
cairo_region_t* region = gdk_window_get_clip_region(gtk_widget_get_window(m_wxwindow));
cairo_rectangle_int_t rect;
cairo_region_get_extents(region, &rect);
cairo_region_destroy(region);
cairo_rectangle(cr, rect.x, rect.y, rect.width, rect.height);
cairo_clip(cr);
}
double x1, y1, x2, y2;
cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
if (x1 >= x2 || y1 >= y2)
return;
m_paintContext = cr;
m_updateRegion = wxRegion(int(x1), int(y1), int(x2 - x1), int(y2 - y1));
#else // !__WXGTK3__
m_updateRegion = wxRegion(region);