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https://github.com/SerenityOS/serenity
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95 lines
3 KiB
C++
95 lines
3 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 <AK/MappedFile.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, Indexed8 };
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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(const String& path);
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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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byte* bits(int y);
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const byte* bits(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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Format format() const { return m_format; }
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void set_mmap_name(const String&);
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size_t size_in_bytes() const { return m_pitch * m_size.height() * sizeof(RGBA32); }
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Color palette_color(byte index) const { return Color::from_rgba(m_palette[index]); }
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void set_palette_color(byte index, Color color) { m_palette[index] = color.value(); }
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Color get_pixel(int x, int y) const
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{
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switch (m_format) {
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case Format::RGB32:
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return Color::from_rgb(scanline(y)[x]);
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case Format::RGBA32:
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return Color::from_rgba(scanline(y)[x]);
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case Format::Indexed8:
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return Color::from_rgba(m_palette[bits(y)[x]]);
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default:
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ASSERT_NOT_REACHED();
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}
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}
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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, const Size&, MappedFile&&);
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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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RGBA32* m_palette { 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_needs_munmap { false };
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MappedFile m_mapped_file;
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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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inline const byte* GraphicsBitmap::bits(int y) const
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{
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return reinterpret_cast<const byte*>(scanline(y));
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}
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inline byte* GraphicsBitmap::bits(int y)
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{
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return reinterpret_cast<byte*>(scanline(y));
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}
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