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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Forward.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <LibGfx/Color.h>
#include <LibGfx/Rect.h>
namespace Gfx {
enum class BitmapFormat {
Invalid,
RGB32,
RGBA32,
Indexed8
};
class Bitmap : public RefCounted<Bitmap> {
public:
static NonnullRefPtr<Bitmap> create(BitmapFormat, const Size&);
static NonnullRefPtr<Bitmap> create_purgeable(BitmapFormat, const Size&);
static NonnullRefPtr<Bitmap> create_wrapper(BitmapFormat, const Size&, size_t pitch, RGBA32*);
static RefPtr<Bitmap> load_from_file(const StringView& path);
static NonnullRefPtr<Bitmap> create_with_shared_buffer(BitmapFormat, NonnullRefPtr<SharedBuffer>&&, const Size&);
NonnullRefPtr<Bitmap> to_shareable_bitmap() const;
~Bitmap();
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;
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 BitmapFormat::Indexed8:
return 8;
case BitmapFormat::RGB32:
case BitmapFormat::RGBA32:
return 32;
default:
ASSERT_NOT_REACHED();
case BitmapFormat::Invalid:
return 0;
}
}
void fill(Color);
bool has_alpha_channel() const { return m_format == BitmapFormat::RGBA32; }
BitmapFormat 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<BitmapFormat>
Color get_pixel(int x, int y) const
{
(void)x;
(void)y;
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<BitmapFormat>
void set_pixel(int x, int y, Color)
{
(void)x;
(void)y;
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);
}
bool is_purgeable() const { return m_purgeable; }
bool is_volatile() const { return m_volatile; }
void set_volatile();
[[nodiscard]] bool set_nonvolatile();
private:
enum class Purgeable { No,
Yes };
Bitmap(BitmapFormat, const Size&, Purgeable);
Bitmap(BitmapFormat, const Size&, size_t pitch, RGBA32*);
Bitmap(BitmapFormat, NonnullRefPtr<SharedBuffer>&&, const Size&);
Size m_size;
RGBA32* m_data { nullptr };
RGBA32* m_palette { nullptr };
size_t m_pitch { 0 };
BitmapFormat m_format { BitmapFormat::Invalid };
bool m_needs_munmap { false };
bool m_purgeable { false };
bool m_volatile { false };
RefPtr<SharedBuffer> m_shared_buffer;
};
inline RGBA32* Bitmap::scanline(int y)
{
return reinterpret_cast<RGBA32*>((((u8*)m_data) + (y * m_pitch)));
}
inline const RGBA32* Bitmap::scanline(int y) const
{
return reinterpret_cast<const RGBA32*>((((const u8*)m_data) + (y * m_pitch)));
}
inline const u8* Bitmap::bits(int y) const
{
return reinterpret_cast<const u8*>(scanline(y));
}
inline u8* Bitmap::bits(int y)
{
return reinterpret_cast<u8*>(scanline(y));
}
template<>
inline Color Bitmap::get_pixel<BitmapFormat::RGB32>(int x, int y) const
{
return Color::from_rgb(scanline(y)[x]);
}
template<>
inline Color Bitmap::get_pixel<BitmapFormat::RGBA32>(int x, int y) const
{
return Color::from_rgba(scanline(y)[x]);
}
template<>
inline Color Bitmap::get_pixel<BitmapFormat::Indexed8>(int x, int y) const
{
return Color::from_rgba(m_palette[bits(y)[x]]);
}
inline Color Bitmap::get_pixel(int x, int y) const
{
switch (m_format) {
case BitmapFormat::RGB32:
return get_pixel<BitmapFormat::RGB32>(x, y);
case BitmapFormat::RGBA32:
return get_pixel<BitmapFormat::RGBA32>(x, y);
case BitmapFormat::Indexed8:
return get_pixel<BitmapFormat::Indexed8>(x, y);
default:
ASSERT_NOT_REACHED();
return {};
}
}
template<>
inline void Bitmap::set_pixel<BitmapFormat::RGB32>(int x, int y, Color color)
{
scanline(y)[x] = color.value();
}
template<>
inline void Bitmap::set_pixel<BitmapFormat::RGBA32>(int x, int y, Color color)
{
scanline(y)[x] = color.value();
}
inline void Bitmap::set_pixel(int x, int y, Color color)
{
switch (m_format) {
case BitmapFormat::RGB32:
set_pixel<BitmapFormat::RGB32>(x, y, color);
break;
case BitmapFormat::RGBA32:
set_pixel<BitmapFormat::RGBA32>(x, y, color);
break;
case BitmapFormat::Indexed8:
ASSERT_NOT_REACHED();
default:
ASSERT_NOT_REACHED();
}
}
}
|
