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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "common/algorithm.h"
#include "common/util.h"
#include "common/rect.h"
#include "common/textconsole.h"
#include "graphics/primitives.h"
#include "graphics/surface.h"
namespace Graphics {
template<typename T>
static void plotPoint(int x, int y, int color, void *data) {
Surface *s = (Surface *)data;
if (x >= 0 && x < s->w && y >= 0 && y < s->h) {
T *ptr = (T *)s->getBasePtr(x, y);
*ptr = (T)color;
}
}
void Surface::drawLine(int x0, int y0, int x1, int y1, uint32 color) {
if (format.bytesPerPixel == 1)
Graphics::drawLine(x0, y0, x1, y1, color, plotPoint<byte>, this);
else if (format.bytesPerPixel == 2)
Graphics::drawLine(x0, y0, x1, y1, color, plotPoint<uint16>, this);
else if (format.bytesPerPixel == 4)
Graphics::drawLine(x0, y0, x1, y1, color, plotPoint<uint32>, this);
else
error("Surface::drawLine: bytesPerPixel must be 1, 2, or 4");
}
void Surface::drawThickLine(int x0, int y0, int x1, int y1, int penX, int penY, uint32 color) {
if (format.bytesPerPixel == 1)
Graphics::drawThickLine(x0, y0, x1, y1, penX, penY, color, plotPoint<byte>, this);
else if (format.bytesPerPixel == 2)
Graphics::drawThickLine(x0, y0, x1, y1, penX, penY, color, plotPoint<uint16>, this);
else if (format.bytesPerPixel == 4)
Graphics::drawThickLine(x0, y0, x1, y1, penX, penY, color, plotPoint<uint32>, this);
else
error("Surface::drawThickLine: bytesPerPixel must be 1, 2, or 4");
}
void Surface::create(uint16 width, uint16 height, const PixelFormat &f) {
free();
w = width;
h = height;
format = f;
pitch = w * format.bytesPerPixel;
if (width && height) {
pixels = calloc(width * height, format.bytesPerPixel);
assert(pixels);
}
}
void Surface::free() {
::free(pixels);
pixels = 0;
w = h = pitch = 0;
format = PixelFormat();
}
void Surface::copyFrom(const Surface &surf) {
create(surf.w, surf.h, surf.format);
memcpy(pixels, surf.pixels, h * pitch);
}
void Surface::hLine(int x, int y, int x2, uint32 color) {
// Clipping
if (y < 0 || y >= h)
return;
if (x2 < x)
SWAP(x2, x);
if (x < 0)
x = 0;
if (x2 >= w)
x2 = w - 1;
if (x2 < x)
return;
if (format.bytesPerPixel == 1) {
byte *ptr = (byte *)getBasePtr(x, y);
memset(ptr, (byte)color, x2 - x + 1);
} else if (format.bytesPerPixel == 2) {
uint16 *ptr = (uint16 *)getBasePtr(x, y);
Common::fill(ptr, ptr + (x2 - x + 1), (uint16)color);
} else if (format.bytesPerPixel == 4) {
uint32 *ptr = (uint32 *)getBasePtr(x, y);
Common::fill(ptr, ptr + (x2 - x + 1), color);
} else {
error("Surface::hLine: bytesPerPixel must be 1, 2, or 4");
}
}
void Surface::vLine(int x, int y, int y2, uint32 color) {
// Clipping
if (x < 0 || x >= w)
return;
if (y2 < y)
SWAP(y2, y);
if (y < 0)
y = 0;
if (y2 >= h)
y2 = h - 1;
if (format.bytesPerPixel == 1) {
byte *ptr = (byte *)getBasePtr(x, y);
while (y++ <= y2) {
*ptr = (byte)color;
ptr += pitch;
}
} else if (format.bytesPerPixel == 2) {
uint16 *ptr = (uint16 *)getBasePtr(x, y);
while (y++ <= y2) {
*ptr = (uint16)color;
ptr += pitch / 2;
}
} else if (format.bytesPerPixel == 4) {
uint32 *ptr = (uint32 *)getBasePtr(x, y);
while (y++ <= y2) {
*ptr = color;
ptr += pitch / 4;
}
} else {
error("Surface::vLine: bytesPerPixel must be 1, 2, or 4");
}
}
void Surface::fillRect(Common::Rect r, uint32 color) {
r.clip(w, h);
if (!r.isValidRect())
return;
int width = r.width();
int lineLen = width;
int height = r.height();
bool useMemset = true;
if (format.bytesPerPixel == 2) {
lineLen *= 2;
if ((uint16)color != ((color & 0xff) | (color & 0xff) << 8))
useMemset = false;
} else if (format.bytesPerPixel == 4) {
useMemset = false;
} else if (format.bytesPerPixel != 1) {
error("Surface::fillRect: bytesPerPixel must be 1, 2, or 4");
}
if (useMemset) {
byte *ptr = (byte *)getBasePtr(r.left, r.top);
while (height--) {
memset(ptr, (byte)color, lineLen);
ptr += pitch;
}
} else {
if (format.bytesPerPixel == 2) {
uint16 *ptr = (uint16 *)getBasePtr(r.left, r.top);
while (height--) {
Common::fill(ptr, ptr + width, (uint16)color);
ptr += pitch / 2;
}
} else {
uint32 *ptr = (uint32 *)getBasePtr(r.left, r.top);
while (height--) {
Common::fill(ptr, ptr + width, color);
ptr += pitch / 4;
}
}
}
}
void Surface::frameRect(const Common::Rect &r, uint32 color) {
hLine(r.left, r.top, r.right - 1, color);
hLine(r.left, r.bottom - 1, r.right - 1, color);
vLine(r.left, r.top, r.bottom - 1, color);
vLine(r.right - 1, r.top, r.bottom - 1, color);
}
void Surface::move(int dx, int dy, int height) {
// Short circuit check - do we have to do anything anyway?
if ((dx == 0 && dy == 0) || height <= 0)
return;
if (format.bytesPerPixel != 1 && format.bytesPerPixel != 2 && format.bytesPerPixel != 4)
error("Surface::move: bytesPerPixel must be 1, 2, or 4");
byte *src, *dst;
int x, y;
// vertical movement
if (dy > 0) {
// move down - copy from bottom to top
dst = (byte *)pixels + (height - 1) * pitch;
src = dst - dy * pitch;
for (y = dy; y < height; y++) {
memcpy(dst, src, pitch);
src -= pitch;
dst -= pitch;
}
} else if (dy < 0) {
// move up - copy from top to bottom
dst = (byte *)pixels;
src = dst - dy * pitch;
for (y = -dy; y < height; y++) {
memcpy(dst, src, pitch);
src += pitch;
dst += pitch;
}
}
// horizontal movement
if (dx > 0) {
// move right - copy from right to left
dst = (byte *)pixels + (pitch - format.bytesPerPixel);
src = dst - (dx * format.bytesPerPixel);
for (y = 0; y < height; y++) {
for (x = dx; x < w; x++) {
if (format.bytesPerPixel == 1) {
*dst-- = *src--;
} else if (format.bytesPerPixel == 2) {
*(uint16 *)dst = *(const uint16 *)src;
src -= 2;
dst -= 2;
} else if (format.bytesPerPixel == 4) {
*(uint32 *)dst = *(const uint32 *)src;
src -= 4;
dst -= 4;
}
}
src += pitch + (pitch - dx * format.bytesPerPixel);
dst += pitch + (pitch - dx * format.bytesPerPixel);
}
} else if (dx < 0) {
// move left - copy from left to right
dst = (byte *)pixels;
src = dst - (dx * format.bytesPerPixel);
for (y = 0; y < height; y++) {
for (x = -dx; x < w; x++) {
if (format.bytesPerPixel == 1) {
*dst++ = *src++;
} else if (format.bytesPerPixel == 2) {
*(uint16 *)dst = *(const uint16 *)src;
src += 2;
dst += 2;
} else if (format.bytesPerPixel == 4) {
*(uint32 *)dst = *(const uint32 *)src;
src += 4;
dst += 4;
}
}
src += pitch - (pitch + dx * format.bytesPerPixel);
dst += pitch - (pitch + dx * format.bytesPerPixel);
}
}
}
} // End of namespace Graphics
|
