1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
#pragma once
#include "Color.h"
#include "Rect.h"
#include "Size.h"
#include <AK/MappedFile.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <SharedBuffer.h>
class GraphicsBitmap : public RefCounted<GraphicsBitmap> {
public:
enum class Format {
Invalid,
RGB32,
RGBA32,
Indexed8
};
static NonnullRefPtr<GraphicsBitmap> create(Format, const Size&);
static NonnullRefPtr<GraphicsBitmap> create_wrapper(Format, const Size&, size_t pitch, RGBA32*);
static RefPtr<GraphicsBitmap> load_from_file(const StringView& path);
static RefPtr<GraphicsBitmap> load_from_file(Format, const StringView& path, const Size&);
static NonnullRefPtr<GraphicsBitmap> create_with_shared_buffer(Format, NonnullRefPtr<SharedBuffer>&&, const Size&);
NonnullRefPtr<GraphicsBitmap> to_shareable_bitmap() const;
~GraphicsBitmap();
RGBA32* scanline(int y);
const RGBA32* scanline(int y) const;
u8* bits(int y);
const u8* 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; }
SharedBuffer* shared_buffer() { return m_shared_buffer.ptr(); }
const SharedBuffer* shared_buffer() const { return m_shared_buffer.ptr(); }
unsigned bpp() const
{
switch (m_format) {
case Format::Indexed8:
return 8;
case Format::RGB32:
case Format::RGBA32:
return 32;
default:
ASSERT_NOT_REACHED();
case Format::Invalid:
return 0;
}
}
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(u8 index) const { return Color::from_rgba(m_palette[index]); }
void set_palette_color(u8 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&, size_t pitch, RGBA32*);
GraphicsBitmap(Format, const Size&, MappedFile&&);
GraphicsBitmap(Format, NonnullRefPtr<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;
RefPtr<SharedBuffer> m_shared_buffer;
};
inline RGBA32* GraphicsBitmap::scanline(int y)
{
return reinterpret_cast<RGBA32*>((((u8*)m_data) + (y * m_pitch)));
}
inline const RGBA32* GraphicsBitmap::scanline(int y) const
{
return reinterpret_cast<const RGBA32*>((((const u8*)m_data) + (y * m_pitch)));
}
inline const u8* GraphicsBitmap::bits(int y) const
{
return reinterpret_cast<const u8*>(scanline(y));
}
inline u8* GraphicsBitmap::bits(int y)
{
return reinterpret_cast<u8*>(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();
return {};
}
}
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();
}
}
|
