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LibGUI: Only redraw the dirty rect in GWidget.

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There is some trouble here with the asynchronous nature of WindowServer
and the single per-window backing store we're drawing into. If we start
repainting a widget with a pending invalidation, that invalidation might
get flushed by the WindowServer mid-paint.
This commit is contained in:
Andreas Kling 2019-01-20 07:56:48 +01:00
parent ea6678b7b3
commit a9e60fc800
4 changed files with 10 additions and 8 deletions
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2
LibGUI/GWindow.h
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@ -37,6 +37,8 @@ public:
void close();
GWidget* main_widget() { return m_main_widget; }
const GWidget* main_widget() const { return m_main_widget; }
void set_main_widget(GWidget*);
GraphicsBitmap* backing() { return m_backing.ptr(); }