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WindowServer: Add support for alpha channel based hit testing

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This enables implementing non-rectangular window shapes, including
non-rectangular window frames.
This commit is contained in:
Tom 2021-02-14 16:42:37 -07:00 • committed by Andreas Kling
parent b3f0a5c917
commit d590e0c946
12 changed files with 107 additions and 12 deletions
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4
Userland/Libraries/LibGUI/Window.h
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@ -72,6 +72,9 @@ public:
void set_opacity(float);
float opacity() const { return m_opacity_when_windowless; }
void set_alpha_hit_threshold(float);
float alpha_hit_threshold() const { return m_alpha_hit_threshold; }
WindowType window_type() const { return m_window_type; }
void set_window_type(WindowType);
@ -238,6 +241,7 @@ private:
RefPtr<Gfx::Bitmap> m_custom_cursor;
int m_window_id { 0 };
float m_opacity_when_windowless { 1.0f };
float m_alpha_hit_threshold { 0.0f };
RefPtr<Widget> m_main_widget;
WeakPtr<Widget> m_focused_widget;
WeakPtr<Widget> m_global_cursor_tracking_widget;