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#pragma once
#include "Color.h"
#include "Rect.h"
#include "Size.h"
#include <AK/AKString.h>
#include <AK/MappedFile.h>
#include <AK/RetainPtr.h>
#include <AK/Retainable.h>
#include <AK/StringView.h>
#include <SharedBuffer.h>
class GraphicsBitmap : public Retainable<GraphicsBitmap> {
public:
enum class Format {
Invalid,
RGB32,
RGBA32,
Indexed8
};
static Retained<GraphicsBitmap> create(Format, const Size&);
static Retained<GraphicsBitmap> create_wrapper(Format, const Size&, RGBA32*);
static RetainPtr<GraphicsBitmap> load_from_file(const StringView& path);
static RetainPtr<GraphicsBitmap> load_from_file(Format, const StringView& path, const Size&);
static Retained<GraphicsBitmap> create_with_shared_buffer(Format, Retained<SharedBuffer>&&, const Size&);
~GraphicsBitmap();
RGBA32* scanline(int y);
const RGBA32* scanline(int y) const;
byte* bits(int y);
const byte* bits(int y) const;
Rect rect() const { return { {}, m_size }; }
Size size() const { return m_size; }
int width() const { return m_size.width(); }
int height() const { return m_size.height(); }
size_t pitch() const { return m_pitch; }
int shared_buffer_id() const { return m_shared_buffer ? m_shared_buffer->shared_buffer_id() : -1; }
void fill(Color);
bool has_alpha_channel() const { return m_format == Format::RGBA32; }
Format format() const { return m_format; }
void set_mmap_name(const StringView&);
size_t size_in_bytes() const { return m_pitch * m_size.height(); }
Color palette_color(byte index) const { return Color::from_rgba(m_palette[index]); }
void set_palette_color(byte index, Color color) { m_palette[index] = color.value(); }
template<Format>
Color get_pixel(int x, int y) const
{
ASSERT_NOT_REACHED();
}
Color get_pixel(int x, int y) const;
Color get_pixel(const Point& position) const
{
return get_pixel(position.x(), position.y());
}
template<Format>
void set_pixel(int x, int y, Color)
{
ASSERT_NOT_REACHED();
}
void set_pixel(int x, int y, Color);
void set_pixel(const Point& position, Color color)
{
set_pixel(position.x(), position.y(), color);
}
private:
GraphicsBitmap(Format, const Size&);
GraphicsBitmap(Format, const Size&, RGBA32*);
GraphicsBitmap(Format, const Size&, MappedFile&&);
GraphicsBitmap(Format, Retained<SharedBuffer>&&, const Size&);
Size m_size;
RGBA32* m_data { nullptr };
RGBA32* m_palette { nullptr };
size_t m_pitch { 0 };
Format m_format { Format::Invalid };
bool m_needs_munmap { false };
MappedFile m_mapped_file;
RetainPtr<SharedBuffer> m_shared_buffer;
};
inline RGBA32* GraphicsBitmap::scanline(int y)
{
return reinterpret_cast<RGBA32*>((((byte*)m_data) + (y * m_pitch)));
}
inline const RGBA32* GraphicsBitmap::scanline(int y) const
{
return reinterpret_cast<const RGBA32*>((((const byte*)m_data) + (y * m_pitch)));
}
inline const byte* GraphicsBitmap::bits(int y) const
{
return reinterpret_cast<const byte*>(scanline(y));
}
inline byte* GraphicsBitmap::bits(int y)
{
return reinterpret_cast<byte*>(scanline(y));
}
template<>
inline Color GraphicsBitmap::get_pixel<GraphicsBitmap::Format::RGB32>(int x, int y) const
{
return Color::from_rgb(scanline(y)[x]);
}
template<>
inline Color GraphicsBitmap::get_pixel<GraphicsBitmap::Format::RGBA32>(int x, int y) const
{
return Color::from_rgba(scanline(y)[x]);
}
template<>
inline Color GraphicsBitmap::get_pixel<GraphicsBitmap::Format::Indexed8>(int x, int y) const
{
return Color::from_rgba(m_palette[bits(y)[x]]);
}
inline Color GraphicsBitmap::get_pixel(int x, int y) const
{
switch (m_format) {
case Format::RGB32:
return get_pixel<Format::RGB32>(x, y);
case Format::RGBA32:
return get_pixel<Format::RGBA32>(x, y);
case Format::Indexed8:
return get_pixel<Format::Indexed8>(x, y);
default:
ASSERT_NOT_REACHED();
}
}
template<>
inline void GraphicsBitmap::set_pixel<GraphicsBitmap::Format::RGB32>(int x, int y, Color color)
{
scanline(y)[x] = color.value();
}
template<>
inline void GraphicsBitmap::set_pixel<GraphicsBitmap::Format::RGBA32>(int x, int y, Color color)
{
scanline(y)[x] = color.value();
}
inline void GraphicsBitmap::set_pixel(int x, int y, Color color)
{
switch (m_format) {
case Format::RGB32:
set_pixel<Format::RGB32>(x, y, color);
break;
case Format::RGBA32:
set_pixel<Format::RGBA32>(x, y, color);
break;
case Format::Indexed8:
ASSERT_NOT_REACHED();
default:
ASSERT_NOT_REACHED();
}
}
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