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WindowServer: Recompute occlusions when changing window's alpha channel

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Fixes #4845
This commit is contained in:
Tom 2021-02-11 17:32:03 -07:00 committed by Andreas Kling
parent c2de22a635
commit 7e06afb822
Notes: sideshowbarker 2024-07-18 22:24:47 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/7e06afb8227
Pull-request: https://github.com/SerenityOS/serenity/pull/5298
Issue: https://github.com/SerenityOS/serenity/issues/4845
3 changed files with 12 additions and 2 deletions
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2
Userland/Libraries/LibGUI/Window.h
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@ -68,7 +68,9 @@ public:
void set_double_buffering_enabled(bool);
void set_has_alpha_channel(bool);
bool has_alpha_channel() const { return m_has_alpha_channel; }
void set_opacity(float);
float opacity() const { return m_opacity_when_windowless; }
WindowType window_type() const { return m_window_type; }
void set_window_type(WindowType);

10
Userland/Services/WindowServer/Window.cpp
View file

@ -323,10 +323,18 @@ void Window::set_opacity(float opacity)
m_opacity = opacity;
if (was_opaque != is_opaque())
Compositor::the().invalidate_occlusions();
Compositor::the().invalidate_screen(frame().render_rect());
invalidate(false);
WindowManager::the().notify_opacity_changed(*this);
}
void Window::set_has_alpha_channel(bool value)
{
if (m_has_alpha_channel == value)
return;
m_has_alpha_channel = value;
Compositor::the().invalidate_occlusions();
}
void Window::set_occluded(bool occluded)
{
if (m_occluded == occluded)

2
Userland/Services/WindowServer/Window.h
View file

@ -219,7 +219,7 @@ public:
bool global_cursor_tracking() const { return m_global_cursor_tracking_enabled || m_automatic_cursor_tracking_enabled; }
bool has_alpha_channel() const { return m_has_alpha_channel; }
void set_has_alpha_channel(bool value) { m_has_alpha_channel = value; }
void set_has_alpha_channel(bool value);
Gfx::IntSize size_increment() const { return m_size_increment; }
void set_size_increment(const Gfx::IntSize& increment) { m_size_increment = increment; }