This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_video.c
3420 lines (3035 loc) · 86 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2010 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
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
13
Lesser General Public License for more details.
14
15
16
17
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
18
19
Sam Lantinga
20
slouken@libsdl.org
21
*/
22
#include "SDL_config.h"
23
24
25
/* The high-level video driver subsystem */
26
#include "SDL.h"
27
#include "SDL_video.h"
28
29
30
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
31
#include "SDL_renderer_gl.h"
32
#include "SDL_renderer_gles.h"
33
#include "SDL_renderer_sw.h"
34
#include "../events/SDL_events_c.h"
35
36
37
#if SDL_VIDEO_DRIVER_WINDOWS
#include "windows/SDL_windowsvideo.h"
38
39
40
extern void IME_Present(SDL_VideoData *videodata);
#endif
41
42
#if SDL_VIDEO_OPENGL_ES
#include "SDL_opengles.h"
43
#endif /* SDL_VIDEO_OPENGL_ES */
44
45
46
#if SDL_VIDEO_OPENGL
#include "SDL_opengl.h"
47
48
49
#endif /* SDL_VIDEO_OPENGL */
#include "SDL_syswm.h"
50
51
52
53
54
55
/* On Windows, windows.h defines CreateWindow */
#ifdef CreateWindow
#undef CreateWindow
#endif
56
/* Available video drivers */
57
static VideoBootStrap *bootstrap[] = {
58
#if SDL_VIDEO_DRIVER_COCOA
59
&COCOA_bootstrap,
60
#endif
61
#if SDL_VIDEO_DRIVER_X11
62
&X11_bootstrap,
63
#endif
64
#if SDL_VIDEO_DRIVER_DIRECTFB
65
&DirectFB_bootstrap,
66
#endif
67
68
#if SDL_VIDEO_DRIVER_WINDOWS
&WINDOWS_bootstrap,
69
#endif
70
#if SDL_VIDEO_DRIVER_BWINDOW
71
&BWINDOW_bootstrap,
72
#endif
73
#if SDL_VIDEO_DRIVER_PHOTON
74
75
76
77
&photon_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_QNXGF
&qnxgf_bootstrap,
78
#endif
79
#if SDL_VIDEO_DRIVER_EPOC
80
&EPOC_bootstrap,
81
#endif
82
#if SDL_VIDEO_DRIVER_NDS
83
&NDS_bootstrap,
84
#endif
85
#if SDL_VIDEO_DRIVER_UIKIT
86
&UIKIT_bootstrap,
87
#endif
88
#if SDL_VIDEO_DRIVER_DUMMY
89
&DUMMY_bootstrap,
90
91
92
#endif
#if SDL_VIDEO_DRIVER_PANDORA
&PND_bootstrap,
93
94
95
#endif
#if SDL_VIDEO_DRIVER_ANDROID
&Android_bootstrap,
96
#endif
97
NULL
98
};
99
100
static SDL_VideoDevice *_this = NULL;
101
102
103
104
105
106
#define CHECK_WINDOW_MAGIC(window, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
107
if (!window || window->magic != &_this->window_magic) { \
108
109
110
111
112
113
114
115
116
SDL_SetError("Invalid window"); \
return retval; \
}
#define CHECK_TEXTURE_MAGIC(texture, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
117
if (!texture || texture->magic != &_this->texture_magic) { \
118
119
120
121
SDL_SetError("Invalid texture"); \
return retval; \
}
122
/* Various local functions */
123
static void SDL_UpdateWindowGrab(SDL_Window * window);
124
125
126
127
static int
cmpmodes(const void *A, const void *B)
{
128
129
SDL_DisplayMode a = *(const SDL_DisplayMode *) A;
SDL_DisplayMode b = *(const SDL_DisplayMode *) B;
130
131
132
133
134
135
136
137
138
139
if (a.w != b.w) {
return b.w - a.w;
}
if (a.h != b.h) {
return b.h - a.h;
}
if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) {
return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format);
}
140
141
142
if (SDL_PIXELLAYOUT(a.format) != SDL_PIXELLAYOUT(b.format)) {
return SDL_PIXELLAYOUT(b.format) - SDL_PIXELLAYOUT(a.format);
}
143
144
145
146
if (a.refresh_rate != b.refresh_rate) {
return b.refresh_rate - a.refresh_rate;
}
return 0;
147
}
148
149
150
151
static void
SDL_UninitializedVideo()
{
152
SDL_SetError("Video subsystem has not been initialized");
153
154
}
155
156
157
int
SDL_GetNumVideoDrivers(void)
{
158
return SDL_arraysize(bootstrap) - 1;
159
160
}
161
const char *
162
163
SDL_GetVideoDriver(int index)
{
164
165
166
167
if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
return bootstrap[index]->name;
}
return NULL;
168
}
169
170
171
172
/*
* Initialize the video and event subsystems -- determine native pixel format
*/
173
int
174
SDL_VideoInit(const char *driver_name)
175
{
176
177
178
SDL_VideoDevice *video;
int index;
int i;
179
180
181
182
183
184
/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
SDL_VideoQuit();
}
185
/* Start the event loop */
186
187
188
189
190
if (SDL_StartEventLoop() < 0 ||
SDL_KeyboardInit() < 0 ||
SDL_MouseInit() < 0 ||
SDL_TouchInit() < 0 ||
SDL_QuitInit() < 0) {
191
192
return -1;
}
193
194
195
196
197
198
199
200
201
202
/* Select the proper video driver */
index = 0;
video = NULL;
if (driver_name == NULL) {
driver_name = SDL_getenv("SDL_VIDEODRIVER");
}
if (driver_name != NULL) {
for (i = 0; bootstrap[i]; ++i) {
if (SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) {
203
video = bootstrap[i]->create(index);
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
break;
}
}
} else {
for (i = 0; bootstrap[i]; ++i) {
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
if (video != NULL) {
break;
}
}
}
}
if (video == NULL) {
if (driver_name) {
SDL_SetError("%s not available", driver_name);
} else {
SDL_SetError("No available video device");
}
return -1;
}
_this = video;
_this->name = bootstrap[i]->name;
_this->next_object_id = 1;
/* Set some very sane GL defaults */
_this->gl_config.driver_loaded = 0;
_this->gl_config.dll_handle = NULL;
_this->gl_config.red_size = 3;
_this->gl_config.green_size = 3;
_this->gl_config.blue_size = 2;
_this->gl_config.alpha_size = 0;
_this->gl_config.buffer_size = 0;
_this->gl_config.depth_size = 16;
_this->gl_config.stencil_size = 0;
_this->gl_config.double_buffer = 1;
_this->gl_config.accum_red_size = 0;
_this->gl_config.accum_green_size = 0;
_this->gl_config.accum_blue_size = 0;
_this->gl_config.accum_alpha_size = 0;
_this->gl_config.stereo = 0;
_this->gl_config.multisamplebuffers = 0;
_this->gl_config.multisamplesamples = 0;
_this->gl_config.retained_backing = 1;
249
_this->gl_config.accelerated = -1; /* accelerated or not, both are fine */
250
251
_this->gl_config.major_version = 2;
_this->gl_config.minor_version = 1;
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/* Initialize the video subsystem */
if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
SDL_SetError("The video driver did not add any displays");
SDL_VideoQuit();
return (-1);
}
/* The software renderer is always available */
for (i = 0; i < _this->num_displays; ++i) {
266
SDL_VideoDisplay *display = &_this->displays[i];
267
if (_this->GL_CreateContext) {
268
#if SDL_VIDEO_RENDER_OGL
269
SDL_AddRenderDriver(display, &GL_RenderDriver);
270
#endif
271
#if SDL_VIDEO_RENDER_OGL_ES
272
SDL_AddRenderDriver(display, &GL_ES_RenderDriver);
273
#endif
274
}
275
276
if (display->num_render_drivers > 0) {
SDL_AddRenderDriver(display, &SW_RenderDriver);
277
278
}
}
279
280
281
/* We're ready to go! */
return 0;
282
}
283
284
const char *
285
286
SDL_GetCurrentVideoDriver()
{
287
288
289
290
291
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
return _this->name;
292
}
293
294
SDL_VideoDevice *
295
SDL_GetVideoDevice(void)
296
{
297
return _this;
298
299
}
300
301
int
SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
302
{
303
SDL_VideoDisplay display;
304
305
306
307
308
309
SDL_zero(display);
if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
310
311
return SDL_AddVideoDisplay(&display);
312
313
}
314
315
int
SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
316
{
317
318
SDL_VideoDisplay *displays;
int index = -1;
319
320
321
322
323
324
325
326
327
328
329
330
331
displays =
SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
if (displays) {
index = _this->num_displays++;
displays[index] = *display;
displays[index].device = _this;
_this->displays = displays;
} else {
SDL_OutOfMemory();
}
return index;
332
}
333
334
335
336
int
SDL_GetNumVideoDisplays(void)
{
337
338
339
340
341
if (!_this) {
SDL_UninitializedVideo();
return 0;
}
return _this->num_displays;
342
343
}
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
int
SDL_GetDisplayBounds(int index, SDL_Rect * rect)
{
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
if (index < 0 || index >= _this->num_displays) {
SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
return -1;
}
if (rect) {
SDL_VideoDisplay *display = &_this->displays[index];
if (_this->GetDisplayBounds) {
if (_this->GetDisplayBounds(_this, display, rect) < 0) {
return -1;
}
} else {
/* Assume that the displays are left to right */
if (index == 0) {
rect->x = 0;
rect->y = 0;
} else {
SDL_GetDisplayBounds(index-1, rect);
rect->x += rect->w;
}
rect->w = display->desktop_mode.w;
rect->h = display->desktop_mode.h;
}
}
return 0;
}
379
380
int
SDL_SelectVideoDisplay(int index)
381
{
382
383
384
385
386
387
388
389
390
391
392
if (!_this) {
SDL_UninitializedVideo();
return (-1);
}
if (index < 0 || index >= _this->num_displays) {
SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
return -1;
}
_this->current_display = index;
return 0;
393
394
395
396
397
}
int
SDL_GetCurrentVideoDisplay(void)
{
398
399
400
401
402
if (!_this) {
SDL_UninitializedVideo();
return (-1);
}
return _this->current_display;
403
}
404
405
SDL_bool
406
SDL_AddDisplayMode(SDL_VideoDisplay * display, const SDL_DisplayMode * mode)
407
{
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
modes = display->display_modes;
nmodes = display->num_display_modes;
for (i = nmodes; i--;) {
if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
return SDL_FALSE;
}
}
/* Go ahead and add the new mode */
if (nmodes == display->max_display_modes) {
modes =
SDL_realloc(modes,
(display->max_display_modes + 32) * sizeof(*modes));
if (!modes) {
return SDL_FALSE;
}
display->display_modes = modes;
display->max_display_modes += 32;
}
modes[nmodes] = *mode;
display->num_display_modes++;
434
435
/* Re-sort video modes */
SDL_qsort(display->display_modes, display->num_display_modes,
436
sizeof(SDL_DisplayMode), cmpmodes);
437
438
return SDL_TRUE;
439
440
}
441
442
443
444
445
446
447
448
449
450
451
int
SDL_GetNumDisplayModesForDisplay(SDL_VideoDisplay * display)
{
if (!display->num_display_modes && _this->GetDisplayModes) {
_this->GetDisplayModes(_this, display);
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
}
return display->num_display_modes;
}
452
453
int
SDL_GetNumDisplayModes()
454
{
455
if (_this) {
456
return SDL_GetNumDisplayModesForDisplay(SDL_CurrentDisplay);
457
458
}
return 0;
459
}
460
461
int
462
SDL_GetDisplayModeForDisplay(SDL_VideoDisplay * display, int index, SDL_DisplayMode * mode)
463
{
464
if (index < 0 || index >= SDL_GetNumDisplayModesForDisplay(display)) {
465
SDL_SetError("index must be in the range of 0 - %d",
466
SDL_GetNumDisplayModesForDisplay(display) - 1);
467
468
469
return -1;
}
if (mode) {
470
471
472
473
474
475
476
477
*mode = display->display_modes[index];
}
return 0;
}
int
SDL_GetDisplayMode(int index, SDL_DisplayMode * mode)
{
478
return SDL_GetDisplayModeForDisplay(SDL_CurrentDisplay, index, mode);
479
480
481
482
483
484
485
}
int
SDL_GetDesktopDisplayModeForDisplay(SDL_VideoDisplay * display, SDL_DisplayMode * mode)
{
if (mode) {
*mode = display->desktop_mode;
486
487
}
return 0;
488
489
}
490
491
int
SDL_GetDesktopDisplayMode(SDL_DisplayMode * mode)
492
{
493
494
495
496
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
497
return SDL_GetDesktopDisplayModeForDisplay(SDL_CurrentDisplay, mode);
498
499
500
501
502
}
int
SDL_GetCurrentDisplayModeForDisplay(SDL_VideoDisplay * display, SDL_DisplayMode * mode)
{
503
if (mode) {
504
*mode = display->current_mode;
505
506
}
return 0;
507
}
508
509
510
int
SDL_GetCurrentDisplayMode(SDL_DisplayMode * mode)
511
{
512
513
514
515
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
516
return SDL_GetCurrentDisplayModeForDisplay(SDL_CurrentDisplay, mode);
517
}
518
519
SDL_DisplayMode *
520
521
522
SDL_GetClosestDisplayModeForDisplay(SDL_VideoDisplay * display,
const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
523
524
525
526
527
528
{
Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
529
530
if (!mode || !closest) {
SDL_SetError("Missing desired mode or closest mode parameter");
531
532
return NULL;
}
533
534
535
536
537
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
538
target_format = display->desktop_mode.format;
539
540
541
542
543
544
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
545
target_refresh_rate = display->desktop_mode.refresh_rate;
546
547
548
}
match = NULL;
549
550
for (i = 0; i < SDL_GetNumDisplayModesForDisplay(display); ++i) {
current = &display->display_modes[i];
551
552
if (current->w && (current->w < mode->w)) {
553
554
555
/* Out of sorted modes large enough here */
break;
}
556
557
558
559
560
561
562
563
564
565
if (current->h && (current->h < mode->h)) {
if (current->w && (current->w == mode->w)) {
/* Out of sorted modes large enough here */
break;
}
/* Wider, but not tall enough, due to a different
aspect ratio. This mode must be skipped, but closer
modes may still follow. */
continue;
}
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
if (!match || current->w < match->w || current->h < match->h) {
match = current;
continue;
}
if (current->format != match->format) {
/* Sorted highest depth to lowest */
if (current->format == target_format ||
(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format)
&& SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
match = current;
}
continue;
}
if (current->refresh_rate != match->refresh_rate) {
/* Sorted highest refresh to lowest */
if (current->refresh_rate >= target_refresh_rate) {
match = current;
}
}
}
if (match) {
if (match->format) {
closest->format = match->format;
} else {
closest->format = mode->format;
}
if (match->w && match->h) {
closest->w = match->w;
closest->h = match->h;
} else {
closest->w = mode->w;
closest->h = mode->h;
}
if (match->refresh_rate) {
closest->refresh_rate = match->refresh_rate;
} else {
closest->refresh_rate = mode->refresh_rate;
}
closest->driverdata = match->driverdata;
/*
* Pick some reasonable defaults if the app and driver don't
* care
*/
if (!closest->format) {
closest->format = SDL_PIXELFORMAT_RGB888;
}
if (!closest->w) {
closest->w = 640;
}
if (!closest->h) {
closest->h = 480;
}
return closest;
}
return NULL;
624
}
625
626
627
628
629
630
631
632
633
SDL_DisplayMode *
SDL_GetClosestDisplayMode(const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
{
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
634
return SDL_GetClosestDisplayModeForDisplay(SDL_CurrentDisplay, mode, closest);
635
636
}
637
int
638
SDL_SetDisplayModeForDisplay(SDL_VideoDisplay * display, const SDL_DisplayMode * mode)
639
{
640
641
SDL_DisplayMode display_mode;
SDL_DisplayMode current_mode;
642
int ncolors;
643
644
645
if (mode) {
display_mode = *mode;
646
647
648
649
650
651
652
653
654
655
656
657
658
659
/* Default to the current mode */
if (!display_mode.format) {
display_mode.format = display->current_mode.format;
}
if (!display_mode.w) {
display_mode.w = display->current_mode.w;
}
if (!display_mode.h) {
display_mode.h = display->current_mode.h;
}
if (!display_mode.refresh_rate) {
display_mode.refresh_rate = display->current_mode.refresh_rate;
}
660
661
662
663
664
665
666
667
668
/* Get a good video mode, the closest one possible */
if (!SDL_GetClosestDisplayModeForDisplay(display, &display_mode, &display_mode)) {
SDL_SetError("No video mode large enough for %dx%d",
display_mode.w, display_mode.h);
return -1;
}
} else {
display_mode = display->desktop_mode;
669
}
670
671
/* See if there's anything left to do */
672
SDL_GetCurrentDisplayModeForDisplay(display, ¤t_mode);
673
674
675
if (SDL_memcmp(&display_mode, ¤t_mode, sizeof(display_mode)) == 0) {
return 0;
}
676
677
/* Actually change the display mode */
678
679
680
681
if (!_this->SetDisplayMode) {
SDL_SetError("Video driver doesn't support changing display mode");
return -1;
}
682
if (_this->SetDisplayMode(_this, display, &display_mode) < 0) {
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
return -1;
}
display->current_mode = display_mode;
/* Set up a palette, if necessary */
if (SDL_ISPIXELFORMAT_INDEXED(display_mode.format)) {
ncolors = (1 << SDL_BITSPERPIXEL(display_mode.format));
} else {
ncolors = 0;
}
if ((!ncolors && display->palette) || (ncolors && !display->palette)
|| (ncolors && ncolors != display->palette->ncolors)) {
if (display->palette) {
SDL_FreePalette(display->palette);
display->palette = NULL;
}
if (ncolors) {
display->palette = SDL_AllocPalette(ncolors);
if (!display->palette) {
return -1;
}
SDL_DitherColors(display->palette->colors,
SDL_BITSPERPIXEL(display_mode.format));
}
}
return 0;
710
711
}
712
int
713
SDL_SetWindowDisplayMode(SDL_Window * window, const SDL_DisplayMode * mode)
714
{
715
CHECK_WINDOW_MAGIC(window, -1);
716
717
718
719
720
if (mode) {
window->fullscreen_mode = *mode;
} else {
SDL_zero(window->fullscreen_mode);
721
}
722
return 0;
723
724
}
725
int
726
SDL_GetWindowDisplayMode(SDL_Window * window, SDL_DisplayMode * mode)
727
{
728
729
SDL_DisplayMode fullscreen_mode;
730
CHECK_WINDOW_MAGIC(window, -1);
731
732
733
734
735
736
737
738
739
fullscreen_mode = window->fullscreen_mode;
if (!fullscreen_mode.w) {
fullscreen_mode.w = window->w;
}
if (!fullscreen_mode.h) {
fullscreen_mode.h = window->h;
}
740
if (!SDL_GetClosestDisplayModeForDisplay(window->display,
741
742
743
744
745
746
&fullscreen_mode,
&fullscreen_mode)) {
SDL_SetError("Couldn't find display mode match");
return -1;
}
747
if (mode) {
748
*mode = fullscreen_mode;
749
750
}
return 0;
751
}
752
753
754
755
static void
SDL_UpdateFullscreenMode(SDL_Window * window, SDL_bool attempt)
{
756
SDL_VideoDisplay *display = window->display;
757
758
759
760
761
762
763
764
765
766
767
768
769
770
/* See if we're already processing a window */
if (display->updating_fullscreen) {
return;
}
display->updating_fullscreen = SDL_TRUE;
/* See if we even want to do anything here */
if ((window->flags & SDL_WINDOW_FULLSCREEN) &&
(window->flags & SDL_WINDOW_SHOWN)) {
if (attempt) {
/* We just gained some state, try to gain all states */
if (window->flags & SDL_WINDOW_MINIMIZED) {
771
SDL_RestoreWindow(window);
772
} else {
773
SDL_RaiseWindow(window);
774
775
776
}
} else {
/* We just lost some state, try to release all states */
777
SDL_MinimizeWindow(window);
778
779
780
781
782
}
}
if (FULLSCREEN_VISIBLE(window)) {
/* Hide any other fullscreen windows */
783
784
SDL_Window *other;
for (other = display->windows; other; other = other->next) {
785
if (other != window && FULLSCREEN_VISIBLE(other)) {
786
SDL_MinimizeWindow(other);
787
788
789
790
791
792
793
}
}
}
display->updating_fullscreen = SDL_FALSE;
/* See if there are any fullscreen windows */
794
for (window = display->windows; window; window = window->next) {
795
796
if (FULLSCREEN_VISIBLE(window)) {
SDL_DisplayMode fullscreen_mode;
797
if (SDL_GetWindowDisplayMode(window, &fullscreen_mode) == 0) {
798
SDL_SetDisplayModeForDisplay(display, &fullscreen_mode);
799
display->fullscreen_window = window;
800
801
802
803
804
805
806
return;
}
}
}
/* Nope, restore the desktop mode */
SDL_SetDisplayModeForDisplay(display, NULL);
807
display->fullscreen_window = NULL;
808
809
}
810
int
811
SDL_SetPaletteForDisplay(SDL_VideoDisplay * display, const SDL_Color * colors, int firstcolor, int ncolors)
812
{
813
814
SDL_Palette *palette;
int status = 0;
815
816
palette = display->palette;
817
818
819
820
821
if (!palette) {
SDL_SetError("Display mode does not have a palette");
return -1;
}
status = SDL_SetPaletteColors(palette, colors, firstcolor, ncolors);
822
823
if (_this->SetDisplayPalette) {
824
if (_this->SetDisplayPalette(_this, display, palette) < 0) {
825
826
827
828
status = -1;
}
}
return status;
829
}
830
831
int
832
SDL_SetDisplayPalette(const SDL_Color * colors, int firstcolor, int ncolors)
833
{
834
835
836
837
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
838
return SDL_SetPaletteForDisplay(SDL_CurrentDisplay, colors, firstcolor, ncolors);
839
840
841
}
int
842
SDL_GetPaletteForDisplay(SDL_VideoDisplay * display, SDL_Color * colors, int firstcolor, int ncolors)
843
844
845
846
847
{
SDL_Palette *palette;
palette = display->palette;
if (!palette || !palette->ncolors) {
848
849
850
851
852
853
854
855
856
857
SDL_SetError("Display mode does not have a palette");
return -1;
}
if (firstcolor < 0 || (firstcolor + ncolors) > palette->ncolors) {
SDL_SetError("Palette indices are out of range");
return -1;
}
SDL_memcpy(colors, &palette->colors[firstcolor],
ncolors * sizeof(*colors));
return 0;
858
}
859
860
861
862
863
864
865
866
int
SDL_GetDisplayPalette(SDL_Color * colors, int firstcolor, int ncolors)
{
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
867
return SDL_GetPaletteForDisplay(SDL_CurrentDisplay, colors, firstcolor, ncolors);
868
869
}
870
SDL_Window *
871
872
SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
{
873
874
875
const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_BORDERLESS |
876
877
SDL_WINDOW_RESIZABLE |
SDL_WINDOW_INPUT_GRABBED);
878
SDL_VideoDisplay *display;
879
SDL_Window *window;
880
881
if (!_this) {
882
/* Initialize the video system if needed */
883
if (SDL_VideoInit(NULL) < 0) {
884
return NULL;
885
}
886
}
887
888
889
if (flags & SDL_WINDOW_OPENGL) {
if (!_this->GL_CreateContext) {
SDL_SetError("No OpenGL support in video driver");
890
return NULL;
891
892
}
SDL_GL_LoadLibrary(NULL);
893
}
894
895
display = SDL_CurrentDisplay;
window = (SDL_Window *)SDL_calloc(1, sizeof(*window));
896
window->magic = &_this->window_magic;
897
898
899
900
901
902
903
904
window->id = _this->next_object_id++;
window->x = x;
window->y = y;
window->w = w;
window->h = h;
window->flags = (flags & allowed_flags);
window->display = display;
window->next = display->windows;
905
906
907
if (display->windows) {
display->windows->prev = window;
}
908
display->windows = window;
909
910
911
912
if (_this->CreateWindow && _this->CreateWindow(_this, window) < 0) {
SDL_DestroyWindow(window);
return NULL;
913
914
915
}
if (title) {
916
SDL_SetWindowTitle(window, title);
917
918
}
if (flags & SDL_WINDOW_MAXIMIZED) {
919
SDL_MaximizeWindow(window);
920
921
}
if (flags & SDL_WINDOW_MINIMIZED) {
922
SDL_MinimizeWindow(window);
923
924
}
if (flags & SDL_WINDOW_SHOWN) {
925
SDL_ShowWindow(window);
926
}
927
SDL_UpdateWindowGrab(window);
928
929
return window;
930
931
}
932
SDL_Window *
933
934
SDL_CreateWindowFrom(const void *data)
{
935
SDL_VideoDisplay *display;
936
SDL_Window *window;
937
938
939
if (!_this) {
SDL_UninitializedVideo();
940
return NULL;
941
}
942
943
display = SDL_CurrentDisplay;
window = (SDL_Window *)SDL_calloc(1, sizeof(*window));
944
window->magic = &_this->window_magic;
945
946
947
948
window->id = _this->next_object_id++;
window->flags = SDL_WINDOW_FOREIGN;
window->display = display;
window->next = display->windows;
949
950
951
if (display->windows) {
display->windows->prev = window;
}
952
display->windows = window;
953
954
if (!_this->CreateWindowFrom ||
955
956
957
_this->CreateWindowFrom(_this, window, data) < 0) {
SDL_DestroyWindow(window);
return NULL;
958
}
959
return window;
960
961
}
962
int
963
SDL_RecreateWindow(SDL_Window * window, Uint32 flags)
964
{
965
966
967
968
const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_BORDERLESS |
SDL_WINDOW_RESIZABLE |
969
970
SDL_WINDOW_INPUT_GRABBED |
SDL_WINDOW_FOREIGN);
971
972
973
974
975
976
char *title = window->title;
if ((flags & SDL_WINDOW_OPENGL) && !_this->GL_CreateContext) {
SDL_SetError("No OpenGL support in video driver");
return -1;
}
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
if ((window->flags & SDL_WINDOW_OPENGL) != (flags & SDL_WINDOW_OPENGL)) {
if (flags & SDL_WINDOW_OPENGL) {
SDL_GL_LoadLibrary(NULL);
} else {
SDL_GL_UnloadLibrary();
}
}
if (window->flags & SDL_WINDOW_FOREIGN) {
/* Can't destroy and re-create foreign windows, hrm */
flags |= SDL_WINDOW_FOREIGN;
} else {
flags &= ~SDL_WINDOW_FOREIGN;
}
if (_this->DestroyWindow && !(flags & SDL_WINDOW_FOREIGN)) {
993
994
_this->DestroyWindow(_this, window);
}
995
996
window->title = NULL;
997
window->flags = (flags & allowed_flags);
998
999
1000
if (_this->CreateWindow && !(flags & SDL_WINDOW_FOREIGN)) {
if (_this->CreateWindow(_this, window) < 0) {