Skip to content
This repository has been archived by the owner on Feb 11, 2021. It is now read-only.

Latest commit

 

History

History
1625 lines (1431 loc) · 41.9 KB

SDL_compat.c

File metadata and controls

1625 lines (1431 loc) · 41.9 KB
 
1
2
/*
SDL - Simple DirectMedia Layer
Feb 12, 2011
Feb 12, 2011
3
Copyright (C) 1997-2011 Sam Lantinga
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
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
/* This file contains functions for backwards compatibility with SDL 1.2 */
#include "SDL.h"
#include "SDL_syswm.h"
#include "video/SDL_sysvideo.h"
#include "video/SDL_pixels_c.h"
Feb 4, 2011
Feb 4, 2011
31
32
#include "render/SDL_yuv_sw_c.h"
Jan 21, 2010
Jan 21, 2010
34
static SDL_Window *SDL_VideoWindow = NULL;
Mar 14, 2008
Mar 14, 2008
35
36
37
38
static SDL_Surface *SDL_VideoSurface = NULL;
static SDL_Surface *SDL_ShadowSurface = NULL;
static SDL_Surface *SDL_PublicSurface = NULL;
static SDL_GLContext *SDL_VideoContext = NULL;
Dec 4, 2008
Dec 4, 2008
39
static Uint32 SDL_VideoFlags = 0;
Mar 14, 2008
Mar 14, 2008
40
static char *wm_title = NULL;
Jan 2, 2009
Jan 2, 2009
41
static SDL_Surface *SDL_VideoIcon;
Sep 19, 2009
Sep 19, 2009
42
static int SDL_enabled_UNICODE = 0;
Feb 4, 2011
Feb 4, 2011
44
const char *
45
46
47
48
SDL_AudioDriverName(char *namebuf, int maxlen)
{
const char *name = SDL_GetCurrentAudioDriver();
if (name) {
Feb 4, 2011
Feb 4, 2011
49
50
51
52
53
54
if (namebuf) {
SDL_strlcpy(namebuf, name, maxlen);
return namebuf;
} else {
return name;
}
55
56
57
58
}
return NULL;
}
Feb 4, 2011
Feb 4, 2011
59
const char *
60
61
62
63
SDL_VideoDriverName(char *namebuf, int maxlen)
{
const char *name = SDL_GetCurrentVideoDriver();
if (name) {
Feb 4, 2011
Feb 4, 2011
64
65
66
67
68
69
if (namebuf) {
SDL_strlcpy(namebuf, name, maxlen);
return namebuf;
} else {
return name;
}
70
71
72
73
}
return NULL;
}
Feb 10, 2011
Feb 10, 2011
74
75
static int
GetVideoDisplay()
Dec 3, 2009
Dec 3, 2009
76
77
78
79
80
81
{
const char *variable = SDL_getenv("SDL_VIDEO_FULLSCREEN_DISPLAY");
if ( !variable ) {
variable = SDL_getenv("SDL_VIDEO_FULLSCREEN_HEAD");
}
if ( variable ) {
Feb 11, 2011
Feb 11, 2011
82
return SDL_atoi(variable);
Feb 10, 2011
Feb 10, 2011
83
84
} else {
return 0;
Dec 3, 2009
Dec 3, 2009
85
86
87
}
}
88
89
90
91
const SDL_VideoInfo *
SDL_GetVideoInfo(void)
{
static SDL_VideoInfo info;
Aug 5, 2006
Aug 5, 2006
92
SDL_DisplayMode mode;
93
94
/* Memory leak, compatibility code, who cares? */
Feb 10, 2011
Feb 10, 2011
95
if (!info.vfmt && SDL_GetDesktopDisplayMode(GetVideoDisplay(), &mode) == 0) {
96
97
98
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
Aug 5, 2006
Aug 5, 2006
99
100
SDL_PixelFormatEnumToMasks(mode.format, &bpp, &Rmask, &Gmask, &Bmask,
&Amask);
101
info.vfmt = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
Dec 12, 2008
Dec 12, 2008
102
103
info.current_w = mode.w;
info.current_h = mode.h;
104
105
106
107
108
109
110
111
112
113
114
115
116
117
}
return &info;
}
int
SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags)
{
int i, actual_bpp = 0;
if (!SDL_GetVideoDevice()) {
return 0;
}
if (!(flags & SDL_FULLSCREEN)) {
Aug 5, 2006
Aug 5, 2006
118
SDL_DisplayMode mode;
Feb 10, 2011
Feb 10, 2011
119
SDL_GetDesktopDisplayMode(GetVideoDisplay(), &mode);
Aug 5, 2006
Aug 5, 2006
120
return SDL_BITSPERPIXEL(mode.format);
Feb 10, 2011
Feb 10, 2011
123
for (i = 0; i < SDL_GetNumDisplayModes(GetVideoDisplay()); ++i) {
Aug 5, 2006
Aug 5, 2006
124
SDL_DisplayMode mode;
Feb 10, 2011
Feb 10, 2011
125
SDL_GetDisplayMode(GetVideoDisplay(), i, &mode);
Aug 5, 2006
Aug 5, 2006
126
127
if (!mode.w || !mode.h || (width == mode.w && height == mode.h)) {
if (!mode.format) {
128
129
return bpp;
}
Aug 5, 2006
Aug 5, 2006
130
131
if (SDL_BITSPERPIXEL(mode.format) >= (Uint32) bpp) {
actual_bpp = SDL_BITSPERPIXEL(mode.format);
132
133
134
135
136
137
138
}
}
}
return actual_bpp;
}
SDL_Rect **
Jan 13, 2009
Jan 13, 2009
139
SDL_ListModes(const SDL_PixelFormat * format, Uint32 flags)
140
141
142
143
144
145
146
147
148
149
150
151
{
int i, nmodes;
SDL_Rect **modes;
if (!SDL_GetVideoDevice()) {
return NULL;
}
if (!(flags & SDL_FULLSCREEN)) {
return (SDL_Rect **) (-1);
}
Jan 13, 2009
Jan 13, 2009
152
153
154
155
if (!format) {
format = SDL_GetVideoInfo()->vfmt;
}
156
157
158
/* Memory leak, but this is a compatibility function, who cares? */
nmodes = 0;
modes = NULL;
Feb 10, 2011
Feb 10, 2011
159
for (i = 0; i < SDL_GetNumDisplayModes(GetVideoDisplay()); ++i) {
Aug 5, 2006
Aug 5, 2006
160
SDL_DisplayMode mode;
Jan 20, 2011
Jan 20, 2011
161
162
int bpp;
Feb 10, 2011
Feb 10, 2011
163
SDL_GetDisplayMode(GetVideoDisplay(), i, &mode);
Aug 5, 2006
Aug 5, 2006
164
if (!mode.w || !mode.h) {
165
166
return (SDL_Rect **) (-1);
}
Jan 20, 2011
Jan 20, 2011
167
168
169
170
171
172
173
174
175
/* Copied from src/video/SDL_pixels.c:SDL_PixelFormatEnumToMasks */
if (SDL_BYTESPERPIXEL(mode.format) <= 2) {
bpp = SDL_BITSPERPIXEL(mode.format);
} else {
bpp = SDL_BYTESPERPIXEL(mode.format) * 8;
}
if (bpp != format->BitsPerPixel) {
Aug 5, 2006
Aug 5, 2006
178
179
if (nmodes > 0 && modes[nmodes - 1]->w == mode.w
&& modes[nmodes - 1]->h == mode.h) {
180
181
182
183
184
185
186
187
188
189
190
191
192
continue;
}
modes = SDL_realloc(modes, (nmodes + 2) * sizeof(*modes));
if (!modes) {
return NULL;
}
modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect));
if (!modes[nmodes]) {
return NULL;
}
modes[nmodes]->x = 0;
modes[nmodes]->y = 0;
Aug 5, 2006
Aug 5, 2006
193
194
modes[nmodes]->w = mode.w;
modes[nmodes]->h = mode.h;
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
++nmodes;
}
if (modes) {
modes[nmodes] = NULL;
}
return modes;
}
static int
SDL_CompatEventFilter(void *userdata, SDL_Event * event)
{
SDL_Event fake;
switch (event->type) {
case SDL_WINDOWEVENT:
switch (event->window.event) {
case SDL_WINDOWEVENT_EXPOSED:
Mar 25, 2010
Mar 25, 2010
212
if (!SDL_HasEvent(SDL_VIDEOEXPOSE)) {
213
214
215
216
217
fake.type = SDL_VIDEOEXPOSE;
SDL_PushEvent(&fake);
}
break;
case SDL_WINDOWEVENT_RESIZED:
Mar 25, 2010
Mar 25, 2010
218
SDL_FlushEvent(SDL_VIDEORESIZE);
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
fake.type = SDL_VIDEORESIZE;
fake.resize.w = event->window.data1;
fake.resize.h = event->window.data2;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_MINIMIZED:
fake.type = SDL_ACTIVEEVENT;
fake.active.gain = 0;
fake.active.state = SDL_APPACTIVE;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_RESTORED:
fake.type = SDL_ACTIVEEVENT;
fake.active.gain = 1;
fake.active.state = SDL_APPACTIVE;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_ENTER:
fake.type = SDL_ACTIVEEVENT;
fake.active.gain = 1;
fake.active.state = SDL_APPMOUSEFOCUS;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_LEAVE:
fake.type = SDL_ACTIVEEVENT;
fake.active.gain = 0;
fake.active.state = SDL_APPMOUSEFOCUS;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_FOCUS_GAINED:
fake.type = SDL_ACTIVEEVENT;
fake.active.gain = 1;
fake.active.state = SDL_APPINPUTFOCUS;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
fake.type = SDL_ACTIVEEVENT;
Oct 28, 2006
Oct 28, 2006
256
fake.active.gain = 0;
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
fake.active.state = SDL_APPINPUTFOCUS;
SDL_PushEvent(&fake);
break;
case SDL_WINDOWEVENT_CLOSE:
fake.type = SDL_QUIT;
SDL_PushEvent(&fake);
break;
}
case SDL_KEYDOWN:
case SDL_KEYUP:
{
Uint32 unicode = 0;
if (event->key.type == SDL_KEYDOWN && event->key.keysym.sym < 256) {
unicode = event->key.keysym.sym;
if (unicode >= 'a' && unicode <= 'z') {
int shifted = !!(event->key.keysym.mod & KMOD_SHIFT);
int capslock = !!(event->key.keysym.mod & KMOD_CAPS);
if ((shifted ^ capslock) != 0) {
unicode = SDL_toupper(unicode);
}
}
}
if (unicode) {
event->key.keysym.unicode = unicode;
}
break;
}
Jun 16, 2007
Jun 16, 2007
284
285
286
case SDL_TEXTINPUT:
{
/* FIXME: Generate an old style key repeat event if needed */
Jun 19, 2007
Jun 19, 2007
287
//printf("TEXTINPUT: '%s'\n", event->text.text);
Jun 16, 2007
Jun 16, 2007
288
289
break;
}
290
291
292
293
294
case SDL_MOUSEWHEEL:
{
Uint8 button;
int x, y;
Jul 6, 2007
Jul 6, 2007
295
296
297
298
if (event->wheel.y == 0) {
break;
}
Dec 16, 2009
Dec 16, 2009
299
SDL_GetMouseState(&x, &y);
Jul 6, 2007
Jul 6, 2007
301
302
303
304
305
306
307
if (event->wheel.y > 0) {
button = SDL_BUTTON_WHEELUP;
} else {
button = SDL_BUTTON_WHEELDOWN;
}
fake.button.button = button;
308
309
310
311
fake.button.x = x;
fake.button.y = y;
fake.button.windowID = event->wheel.windowID;
Jul 6, 2007
Jul 6, 2007
312
313
314
fake.type = SDL_MOUSEBUTTONDOWN;
fake.button.state = SDL_PRESSED;
SDL_PushEvent(&fake);
Jul 6, 2007
Jul 6, 2007
316
317
318
fake.type = SDL_MOUSEBUTTONUP;
fake.button.state = SDL_RELEASED;
SDL_PushEvent(&fake);
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
break;
}
}
return 1;
}
static void
GetEnvironmentWindowPosition(int w, int h, int *x, int *y)
{
const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
if (window) {
if (SDL_sscanf(window, "%d,%d", x, y) == 2) {
return;
}
if (SDL_strcmp(window, "center") == 0) {
center = window;
}
}
if (center) {
Aug 5, 2006
Aug 5, 2006
340
SDL_DisplayMode mode;
Feb 10, 2011
Feb 10, 2011
341
SDL_GetDesktopDisplayMode(GetVideoDisplay(), &mode);
Aug 5, 2006
Aug 5, 2006
342
343
*x = (mode.w - w) / 2;
*y = (mode.h - h) / 2;
Dec 4, 2008
Dec 4, 2008
347
348
349
350
351
352
353
354
355
356
357
static void
ClearVideoSurface()
{
Uint32 black;
/* Clear the surface for display */
black = SDL_MapRGB(SDL_PublicSurface->format, 0, 0, 0);
SDL_FillRect(SDL_PublicSurface, NULL, black);
SDL_UpdateRect(SDL_PublicSurface, 0, 0, 0, 0);
}
Jan 12, 2009
Jan 12, 2009
358
static void
Jan 12, 2009
Jan 12, 2009
359
SetupScreenSaver(int flags)
Jan 12, 2009
Jan 12, 2009
360
361
362
363
{
const char *env;
SDL_bool allow_screensaver;
Jan 12, 2009
Jan 12, 2009
364
365
366
367
368
369
370
371
372
/* Allow environment override of screensaver disable */
env = SDL_getenv("SDL_VIDEO_ALLOW_SCREENSAVER");
if (env) {
allow_screensaver = SDL_atoi(env) ? SDL_TRUE : SDL_FALSE;
} else if (flags & SDL_FULLSCREEN) {
allow_screensaver = SDL_FALSE;
} else {
allow_screensaver = SDL_TRUE;
}
Jan 12, 2009
Jan 12, 2009
373
374
375
376
377
378
379
if (allow_screensaver) {
SDL_EnableScreenSaver();
} else {
SDL_DisableScreenSaver();
}
}
Jun 26, 2010
Jun 26, 2010
380
static int
Dec 4, 2008
Dec 4, 2008
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
SDL_ResizeVideoMode(int width, int height, int bpp, Uint32 flags)
{
int w, h;
/* We can't resize something we don't have... */
if (!SDL_VideoWindow) {
return -1;
}
/* We probably have to recreate the window in fullscreen mode */
if (flags & SDL_FULLSCREEN) {
return -1;
}
/* I don't think there's any change we can gracefully make in flags */
if (flags != SDL_VideoFlags) {
return -1;
}
/* Resize the window */
SDL_GetWindowSize(SDL_VideoWindow, &w, &h);
if (w != width || h != height) {
SDL_SetWindowSize(SDL_VideoWindow, width, height);
}
/* If we're in OpenGL mode, just resize the stub surface and we're done! */
if (flags & SDL_OPENGL) {
SDL_VideoSurface->w = width;
SDL_VideoSurface->h = height;
return 0;
}
/* Destroy the screen texture and recreate it */
Feb 4, 2011
Feb 4, 2011
414
415
SDL_VideoSurface = SDL_GetWindowSurface(SDL_VideoWindow);
if (!SDL_VideoSurface) {
Dec 4, 2008
Dec 4, 2008
416
417
418
419
420
421
return -1;
}
if (SDL_ShadowSurface) {
SDL_ShadowSurface->w = width;
SDL_ShadowSurface->h = height;
Dec 5, 2008
Dec 5, 2008
422
SDL_ShadowSurface->pitch = SDL_CalculatePitch(SDL_ShadowSurface);
Dec 4, 2008
Dec 4, 2008
423
424
425
426
SDL_ShadowSurface->pixels =
SDL_realloc(SDL_ShadowSurface->pixels,
SDL_ShadowSurface->h * SDL_ShadowSurface->pitch);
SDL_SetClipRect(SDL_ShadowSurface, NULL);
Dec 5, 2008
Dec 5, 2008
427
SDL_InvalidateMap(SDL_ShadowSurface->map);
Feb 4, 2011
Feb 4, 2011
428
429
} else {
SDL_PublicSurface = SDL_VideoSurface;
Dec 4, 2008
Dec 4, 2008
430
431
432
433
434
435
436
}
ClearVideoSurface();
return 0;
}
437
438
439
SDL_Surface *
SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
{
Aug 5, 2006
Aug 5, 2006
440
SDL_DisplayMode desktop_mode;
441
442
443
444
445
446
447
448
449
450
int window_x = SDL_WINDOWPOS_UNDEFINED;
int window_y = SDL_WINDOWPOS_UNDEFINED;
Uint32 window_flags;
Uint32 surface_flags;
if (!SDL_GetVideoDevice()) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
return NULL;
}
}
May 23, 2009
May 23, 2009
451
Feb 10, 2011
Feb 10, 2011
452
SDL_GetDesktopDisplayMode(GetVideoDisplay(), &desktop_mode);
Mar 23, 2009
Mar 23, 2009
453
454
455
456
457
458
459
if (width == 0) {
width = desktop_mode.w;
}
if (height == 0) {
height = desktop_mode.h;
}
Feb 3, 2011
Feb 3, 2011
460
461
462
if (bpp == 0) {
bpp = SDL_BITSPERPIXEL(desktop_mode.format);
}
Dec 4, 2008
Dec 4, 2008
464
465
466
467
468
/* See if we can simply resize the existing window and surface */
if (SDL_ResizeVideoMode(width, height, bpp, flags) == 0) {
return SDL_PublicSurface;
}
469
470
471
472
473
474
475
476
477
478
/* Destroy existing window */
SDL_PublicSurface = NULL;
if (SDL_ShadowSurface) {
SDL_FreeSurface(SDL_ShadowSurface);
SDL_ShadowSurface = NULL;
}
if (SDL_VideoSurface) {
SDL_FreeSurface(SDL_VideoSurface);
SDL_VideoSurface = NULL;
}
Jul 16, 2006
Jul 16, 2006
479
if (SDL_VideoContext) {
Mar 14, 2008
Mar 14, 2008
480
/* SDL_GL_MakeCurrent(0, NULL); *//* Doesn't do anything */
Jul 16, 2006
Jul 16, 2006
481
482
483
SDL_GL_DeleteContext(SDL_VideoContext);
SDL_VideoContext = NULL;
}
484
485
if (SDL_VideoWindow) {
SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
Mar 6, 2008
Mar 6, 2008
486
SDL_DestroyWindow(SDL_VideoWindow);
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
}
/* Set up the event filter */
if (!SDL_GetEventFilter(NULL, NULL)) {
SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
}
/* Create a new window */
window_flags = SDL_WINDOW_SHOWN;
if (flags & SDL_FULLSCREEN) {
window_flags |= SDL_WINDOW_FULLSCREEN;
}
if (flags & SDL_OPENGL) {
window_flags |= SDL_WINDOW_OPENGL;
}
if (flags & SDL_RESIZABLE) {
window_flags |= SDL_WINDOW_RESIZABLE;
}
if (flags & SDL_NOFRAME) {
window_flags |= SDL_WINDOW_BORDERLESS;
}
GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
SDL_VideoWindow =
SDL_CreateWindow(wm_title, window_x, window_y, width, height,
window_flags);
if (!SDL_VideoWindow) {
return NULL;
}
Jan 2, 2009
Jan 2, 2009
515
SDL_SetWindowIcon(SDL_VideoWindow, SDL_VideoIcon);
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
surface_flags = 0;
if (window_flags & SDL_WINDOW_FULLSCREEN) {
surface_flags |= SDL_FULLSCREEN;
}
if (window_flags & SDL_WINDOW_OPENGL) {
surface_flags |= SDL_OPENGL;
}
if (window_flags & SDL_WINDOW_RESIZABLE) {
surface_flags |= SDL_RESIZABLE;
}
if (window_flags & SDL_WINDOW_BORDERLESS) {
surface_flags |= SDL_NOFRAME;
}
/* If we're in OpenGL mode, just create a stub surface and we're done! */
if (flags & SDL_OPENGL) {
Jul 16, 2006
Jul 16, 2006
534
535
536
537
538
539
540
SDL_VideoContext = SDL_GL_CreateContext(SDL_VideoWindow);
if (!SDL_VideoContext) {
return NULL;
}
if (SDL_GL_MakeCurrent(SDL_VideoWindow, SDL_VideoContext) < 0) {
return NULL;
}
541
542
543
544
545
546
547
548
549
550
551
SDL_VideoSurface =
SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
if (!SDL_VideoSurface) {
return NULL;
}
SDL_VideoSurface->flags |= surface_flags;
SDL_PublicSurface = SDL_VideoSurface;
return SDL_PublicSurface;
}
/* Create the screen surface */
Feb 4, 2011
Feb 4, 2011
552
SDL_VideoSurface = SDL_GetWindowSurface(SDL_VideoWindow);
553
554
555
556
557
558
if (!SDL_VideoSurface) {
return NULL;
}
SDL_VideoSurface->flags |= surface_flags;
/* Create a shadow surface if necessary */
Aug 11, 2007
Aug 11, 2007
559
560
561
562
if ((bpp != SDL_VideoSurface->format->BitsPerPixel)
&& !(flags & SDL_ANYFORMAT)) {
SDL_ShadowSurface =
SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
563
564
565
566
567
568
569
570
if (!SDL_ShadowSurface) {
return NULL;
}
SDL_ShadowSurface->flags |= surface_flags;
/* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
if (SDL_ShadowSurface->format->palette) {
SDL_ShadowSurface->flags |= SDL_HWPALETTE;
Feb 2, 2011
Feb 2, 2011
571
572
SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
SDL_ShadowSurface->format->BitsPerPixel);
573
574
575
576
577
}
}
SDL_PublicSurface =
(SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
Dec 4, 2008
Dec 4, 2008
578
579
580
SDL_VideoFlags = flags;
ClearVideoSurface();
Jan 12, 2009
Jan 12, 2009
582
SetupScreenSaver(flags);
Jan 12, 2009
Jan 12, 2009
583
584
585
586
587
588
589
590
591
592
593
/* We're finally done! */
return SDL_PublicSurface;
}
SDL_Surface *
SDL_GetVideoSurface(void)
{
return SDL_PublicSurface;
}
Aug 18, 2007
Aug 18, 2007
594
595
596
int
SDL_SetAlpha(SDL_Surface * surface, Uint32 flag, Uint8 value)
{
Dec 6, 2008
Dec 6, 2008
597
598
599
600
601
if (flag & SDL_SRCALPHA) {
/* According to the docs, value is ignored for alpha surfaces */
if (surface->format->Amask) {
value = 0xFF;
}
Aug 18, 2007
Aug 18, 2007
602
SDL_SetSurfaceAlphaMod(surface, value);
Dec 20, 2008
Dec 20, 2008
603
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
Aug 18, 2007
Aug 18, 2007
604
605
} else {
SDL_SetSurfaceAlphaMod(surface, 0xFF);
Dec 20, 2008
Dec 20, 2008
606
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
Aug 18, 2007
Aug 18, 2007
607
}
Dec 6, 2008
Dec 6, 2008
608
609
SDL_SetSurfaceRLE(surface, (flag & SDL_RLEACCEL));
Aug 18, 2007
Aug 18, 2007
610
611
612
return 0;
}
613
614
615
SDL_Surface *
SDL_DisplayFormat(SDL_Surface * surface)
{
Nov 29, 2008
Nov 29, 2008
616
SDL_PixelFormat *format;
617
618
619
620
621
if (!SDL_PublicSurface) {
SDL_SetError("No video mode has been set");
return NULL;
}
Nov 29, 2008
Nov 29, 2008
622
format = SDL_PublicSurface->format;
623
624
/* Set the flags appropriate for copying to display surface */
Nov 29, 2008
Nov 29, 2008
625
return SDL_ConvertSurface(surface, format, SDL_RLEACCEL);
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
}
SDL_Surface *
SDL_DisplayFormatAlpha(SDL_Surface * surface)
{
SDL_PixelFormat *vf;
SDL_PixelFormat *format;
SDL_Surface *converted;
/* default to ARGB8888 */
Uint32 amask = 0xff000000;
Uint32 rmask = 0x00ff0000;
Uint32 gmask = 0x0000ff00;
Uint32 bmask = 0x000000ff;
if (!SDL_PublicSurface) {
SDL_SetError("No video mode has been set");
return NULL;
}
vf = SDL_PublicSurface->format;
switch (vf->BytesPerPixel) {
case 2:
/* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}.
For anything else (like ARGB4444) it doesn't matter
since we have no special code for it anyway */
if ((vf->Rmask == 0x1f) &&
(vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) {
rmask = 0xff;
bmask = 0xff0000;
}
break;
case 3:
case 4:
/* Keep the video format, as long as the high 8 bits are
unused or alpha */
if ((vf->Rmask == 0xff) && (vf->Bmask == 0xff0000)) {
rmask = 0xff;
bmask = 0xff0000;
}
break;
default:
/* We have no other optimised formats right now. When/if a new
optimised alpha format is written, add the converter here */
break;
}
format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);
Nov 29, 2008
Nov 29, 2008
674
converted = SDL_ConvertSurface(surface, format, SDL_RLEACCEL);
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
SDL_FreeFormat(format);
return converted;
}
int
SDL_Flip(SDL_Surface * screen)
{
SDL_UpdateRect(screen, 0, 0, 0, 0);
return 0;
}
void
SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
{
if (screen) {
SDL_Rect rect;
/* Fill the rectangle */
Jul 12, 2006
Jul 12, 2006
693
694
695
696
rect.x = (int) x;
rect.y = (int) y;
rect.w = (int) (w ? w : screen->w);
rect.h = (int) (h ? h : screen->h);
697
698
699
SDL_UpdateRects(screen, 1, &rect);
}
}
Aug 27, 2008
Aug 27, 2008
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
void
SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects)
{
int i;
if (screen == SDL_ShadowSurface) {
for (i = 0; i < numrects; ++i) {
SDL_LowerBlit(SDL_ShadowSurface, &rects[i], SDL_VideoSurface,
&rects[i]);
}
/* Fall through to video surface update */
screen = SDL_VideoSurface;
}
if (screen == SDL_VideoSurface) {
Feb 4, 2011
Feb 4, 2011
716
SDL_UpdateWindowSurfaceRects(SDL_VideoWindow, numrects, rects);
717
718
719
720
721
722
723
724
}
}
void
SDL_WM_SetCaption(const char *title, const char *icon)
{
if (wm_title) {
SDL_free(wm_title);
Sep 23, 2006
Sep 23, 2006
725
726
}
if (title) {
727
wm_title = SDL_strdup(title);
Sep 23, 2006
Sep 23, 2006
728
729
} else {
wm_title = NULL;
730
731
732
733
734
}
SDL_SetWindowTitle(SDL_VideoWindow, wm_title);
}
void
Sep 23, 2006
Sep 23, 2006
735
SDL_WM_GetCaption(const char **title, const char **icon)
736
737
738
739
740
741
742
743
744
745
746
747
{
if (title) {
*title = wm_title;
}
if (icon) {
*icon = "";
}
}
void
SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
{
Jan 2, 2009
Jan 2, 2009
748
SDL_VideoIcon = icon;
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
}
int
SDL_WM_IconifyWindow(void)
{
SDL_MinimizeWindow(SDL_VideoWindow);
return 0;
}
int
SDL_WM_ToggleFullScreen(SDL_Surface * surface)
{
if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) {
if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) {
return 0;
}
SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
} else {
if (SDL_SetWindowFullscreen(SDL_VideoWindow, 1) < 0) {
return 0;
}
SDL_PublicSurface->flags |= SDL_FULLSCREEN;
}
return 1;
}
SDL_GrabMode
SDL_WM_GrabInput(SDL_GrabMode mode)
{
if (mode != SDL_GRAB_QUERY) {
SDL_SetWindowGrab(SDL_VideoWindow, mode);
}
return (SDL_GrabMode) SDL_GetWindowGrab(SDL_VideoWindow);
}
void
SDL_WarpMouse(Uint16 x, Uint16 y)
{
SDL_WarpMouseInWindow(SDL_VideoWindow, x, y);
}
Uint8
SDL_GetAppState(void)
{
Uint8 state = 0;
Uint32 flags = 0;
flags = SDL_GetWindowFlags(SDL_VideoWindow);
if ((flags & SDL_WINDOW_SHOWN) && !(flags & SDL_WINDOW_MINIMIZED)) {
state |= SDL_APPACTIVE;
}
if (flags & SDL_WINDOW_INPUT_FOCUS) {
state |= SDL_APPINPUTFOCUS;
}
if (flags & SDL_WINDOW_MOUSE_FOCUS) {
state |= SDL_APPMOUSEFOCUS;
}
return state;
}
const SDL_version *
SDL_Linked_Version(void)
{
static SDL_version version;
SDL_VERSION(&version);
return &version;
}
int
SDL_SetPalette(SDL_Surface * surface, int flags, const SDL_Color * colors,
int firstcolor, int ncolors)
{
return SDL_SetColors(surface, colors, firstcolor, ncolors);
}
int
SDL_SetColors(SDL_Surface * surface, const SDL_Color * colors, int firstcolor,
int ncolors)
{
if (SDL_SetPaletteColors
(surface->format->palette, colors, firstcolor, ncolors) == 0) {
return 1;
} else {
return 0;
}
}
int
SDL_GetWMInfo(SDL_SysWMinfo * info)
{
return SDL_GetWindowWMInfo(SDL_VideoWindow, info);
}
#if 0
void
SDL_MoveCursor(int x, int y)
{
SDL_VideoDevice *_this = SDL_GetVideoDevice();
/* Erase and update the current mouse position */
if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
/* Erase and redraw mouse cursor in new position */
SDL_LockCursor();
SDL_EraseCursor(SDL_VideoSurface);
SDL_cursor->area.x = (x - SDL_cursor->hot_x);
SDL_cursor->area.y = (y - SDL_cursor->hot_y);
SDL_DrawCursor(SDL_VideoSurface);
SDL_UnlockCursor();
} else if (_this->MoveWMCursor) {
_this->MoveWMCursor(_this, x, y);
}
}
/* Keep track of the current cursor colors */
static int palette_changed = 1;
static Uint8 pixels8[2];
void
SDL_CursorPaletteChanged(void)
{
palette_changed = 1;
}
void
SDL_MouseRect(SDL_Rect * area)
{
SDL_VideoDevice *_this = SDL_GetVideoDevice();
int clip_diff;
*area = SDL_cursor->area;
if (area->x < 0) {
area->w += area->x;
area->x = 0;
}
if (area->y < 0) {
area->h += area->y;
area->y = 0;
}
clip_diff = (area->x + area->w) - SDL_VideoSurface->w;
if (clip_diff > 0) {
area->w = area->w < clip_diff ? 0 : area->w - clip_diff;
}
clip_diff = (area->y + area->h) - SDL_VideoSurface->h;
if (clip_diff > 0) {
area->h = area->h < clip_diff ? 0 : area->h - clip_diff;
}
}
static void
SDL_DrawCursorFast(SDL_Surface * screen, SDL_Rect * area)
{
const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
int i, w, h;
Uint8 *data, datab;
Uint8 *mask, maskb;
data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
switch (screen->format->BytesPerPixel) {
case 1:
{
Uint8 *dst;
int dstskip;
if (palette_changed) {
pixels8[0] =
(Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
palette_changed = 0;
}
dst = (Uint8 *) screen->pixels +
(SDL_cursor->area.y + area->y) * screen->pitch +
SDL_cursor->area.x;
dstskip = screen->pitch - area->w;
for (h = area->h; h; h--) {
for (w = area->w / 8; w; w--) {
maskb = *mask++;
datab = *data++;
for (i = 0; i < 8; ++i) {
if (maskb & 0x80) {
*dst = pixels8[datab >> 7];
}
maskb <<= 1;
datab <<= 1;
dst++;
}
}
dst += dstskip;
}
}
break;
case 2:
{
Uint16 *dst;
int dstskip;
dst = (Uint16 *) screen->pixels +
(SDL_cursor->area.y + area->y) * screen->pitch / 2 +
SDL_cursor->area.x;
dstskip = (screen->pitch / 2) - area->w;
for (h = area->h; h; h--) {
for (w = area->w / 8; w; w--) {
maskb = *mask++;
datab = *data++;
for (i = 0; i < 8; ++i) {
if (maskb & 0x80) {
*dst = (Uint16) pixels[datab >> 7];
}
maskb <<= 1;
datab <<= 1;
dst++;
}
}
dst += dstskip;
}
}
break;
case 3:
{
Uint8 *dst;
int dstskip;
dst = (Uint8 *) screen->pixels +
(SDL_cursor->area.y + area->y) * screen->pitch +
SDL_cursor->area.x * 3;
dstskip = screen->pitch - area->w * 3;
for (h = area->h; h; h--) {
for (w = area->w / 8; w; w--) {
maskb = *mask++;
datab = *data++;
for (i = 0; i < 8; ++i) {
if (maskb & 0x80) {
SDL_memset(dst, pixels[datab >> 7], 3);
}
maskb <<= 1;
datab <<= 1;
dst += 3;
}
}
dst += dstskip;
}
}
break;
case 4:
{