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https://github.com/LadybirdBrowser/ladybird.git
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4e451c1e92
This prevents flicker and looks rather good. The main downside is that resizing gets even more sluggish. That's the price we pay for now.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
#pragma once
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#include "Color.h"
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#include "Rect.h"
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#include "Size.h"
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#include <AK/Retainable.h>
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#include <AK/RetainPtr.h>
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#include <AK/AKString.h>
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#include <SharedBuffer.h>
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class GraphicsBitmap : public Retainable<GraphicsBitmap> {
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public:
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enum class Format { Invalid, RGB32, RGBA32 };
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static Retained<GraphicsBitmap> create(Format, const Size&);
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static Retained<GraphicsBitmap> create_wrapper(Format, const Size&, RGBA32*);
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static RetainPtr<GraphicsBitmap> load_from_file(Format, const String& path, const Size&);
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static Retained<GraphicsBitmap> create_with_shared_buffer(Format, Retained<SharedBuffer>&&, const Size&);
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~GraphicsBitmap();
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RGBA32* scanline(int y);
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const RGBA32* scanline(int y) const;
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Rect rect() const { return { {}, m_size }; }
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Size size() const { return m_size; }
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int width() const { return m_size.width(); }
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int height() const { return m_size.height(); }
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size_t pitch() const { return m_pitch; }
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int shared_buffer_id() const { return m_shared_buffer ? m_shared_buffer->shared_buffer_id() : -1; }
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bool has_alpha_channel() const { return m_format == Format::RGBA32; }
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private:
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GraphicsBitmap(Format, const Size&);
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GraphicsBitmap(Format, const Size&, RGBA32*);
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GraphicsBitmap(Format, Retained<SharedBuffer>&&, const Size&);
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Size m_size;
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RGBA32* m_data { nullptr };
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size_t m_pitch { 0 };
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Format m_format { Format::Invalid };
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bool m_mmaped { false };
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RetainPtr<SharedBuffer> m_shared_buffer;
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};
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inline RGBA32* GraphicsBitmap::scanline(int y)
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{
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return reinterpret_cast<RGBA32*>((((byte*)m_data) + (y * m_pitch)));
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}
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inline const RGBA32* GraphicsBitmap::scanline(int y) const
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{
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return reinterpret_cast<const RGBA32*>((((const byte*)m_data) + (y * m_pitch)));
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}
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