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9b71307d49
This patch also adds a Format concept to GraphicsBitmap. For now there are only two formats: RGB32 and RGBA32. Windows with alpha channel have their backing stores created in the RGBA32 format. Use this to make Terminal windows semi-transparent for that comfy rice look. There is one problem here, in that window compositing overdraw incurs multiple passes of blending of the same pixels. This leads to a mismatch in opacity which is obviously not good. I will work on this in a later patch. The alpha blending is currently straight C++. It should be relatively easy to optimize this using SSE instructions. For now I'm just happy with the cute effect. :^)
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
#pragma once
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#include "GObject.h"
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#include <SharedGraphics/Rect.h>
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#include <SharedGraphics/GraphicsBitmap.h>
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#include <AK/AKString.h>
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#include <AK/WeakPtr.h>
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class GWidget;
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class GWindow final : public GObject {
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public:
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GWindow(GObject* parent = nullptr);
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virtual ~GWindow() override;
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static GWindow* from_window_id(int);
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void set_has_alpha_channel(bool);
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void set_opacity(float);
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int window_id() const { return m_window_id; }
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String title() const;
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void set_title(String&&);
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int x() const { return rect().x(); }
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int y() const { return rect().y(); }
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int width() const { return rect().width(); }
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int height() const { return rect().height(); }
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Rect rect() const;
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Size size() const { return rect().size(); }
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void set_rect(const Rect&);
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void set_rect(int x, int y, int width, int height) { set_rect({ x, y, width, height }); }
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Point position() const { return rect().location(); }
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void move_to(int x, int y) { move_to({ x, y }); }
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void move_to(const Point& point) { set_rect({ point, size() }); }
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virtual void event(GEvent&) override;
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bool is_visible() const;
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bool is_active() const { return m_is_active; }
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void show();
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void hide();
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void close();
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GWidget* main_widget() { return m_main_widget; }
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const GWidget* main_widget() const { return m_main_widget; }
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void set_main_widget(GWidget*);
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GWidget* focused_widget() { return m_focused_widget; }
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const GWidget* focused_widget() const { return m_focused_widget; }
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void set_focused_widget(GWidget*);
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void update(const Rect& = Rect());
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void set_global_cursor_tracking_widget(GWidget*);
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GWidget* global_cursor_tracking_widget() { return m_global_cursor_tracking_widget.ptr(); }
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const GWidget* global_cursor_tracking_widget() const { return m_global_cursor_tracking_widget.ptr(); }
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bool should_exit_app_on_close() const { return m_should_exit_app_on_close; }
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void set_should_exit_app_on_close(bool b) { m_should_exit_app_on_close = b; }
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private:
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virtual const char* class_name() const override { return "GWindow"; }
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RetainPtr<GraphicsBitmap> m_backing;
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int m_window_id { 0 };
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float m_opacity_when_windowless { 1.0f };
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GWidget* m_main_widget { nullptr };
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GWidget* m_focused_widget { nullptr };
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WeakPtr<GWidget> m_global_cursor_tracking_widget;
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Rect m_rect_when_windowless;
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String m_title_when_windowless;
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Vector<Rect> m_pending_paint_event_rects;
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bool m_is_active { false };
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bool m_should_exit_app_on_close { false };
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bool m_has_alpha_channel { false };
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};
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