This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_video.c
1813 lines (1583 loc) · 43.5 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 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
26
27
28
29
/* The high-level video driver subsystem */
#include "SDL.h"
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
30
#include "SDL_renderer_sw.h"
31
32
#include "../events/SDL_sysevents.h"
#include "../events/SDL_events_c.h"
33
34
35
/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
36
#if SDL_VIDEO_DRIVER_QUARTZ
37
&QZ_bootstrap,
38
#endif
39
#if SDL_VIDEO_DRIVER_X11
40
&X11_bootstrap,
41
#endif
42
#if SDL_VIDEO_DRIVER_DGA
43
&DGA_bootstrap,
44
#endif
45
#if SDL_VIDEO_DRIVER_NANOX
46
&NX_bootstrap,
47
#endif
48
#if SDL_VIDEO_DRIVER_IPOD
49
&iPod_bootstrap,
50
#endif
51
#if SDL_VIDEO_DRIVER_QTOPIA
52
&Qtopia_bootstrap,
53
#endif
54
#if SDL_VIDEO_DRIVER_WSCONS
55
&WSCONS_bootstrap,
56
#endif
57
#if SDL_VIDEO_DRIVER_FBCON
58
&FBCON_bootstrap,
59
#endif
60
#if SDL_VIDEO_DRIVER_DIRECTFB
61
&DirectFB_bootstrap,
62
#endif
63
#if SDL_VIDEO_DRIVER_PS2GS
64
&PS2GS_bootstrap,
65
#endif
66
#if SDL_VIDEO_DRIVER_GGI
67
&GGI_bootstrap,
68
#endif
69
#if SDL_VIDEO_DRIVER_VGL
70
&VGL_bootstrap,
71
#endif
72
#if SDL_VIDEO_DRIVER_SVGALIB
73
&SVGALIB_bootstrap,
74
#endif
75
#if SDL_VIDEO_DRIVER_GAPI
76
&GAPI_bootstrap,
77
#endif
78
#if SDL_VIDEO_DRIVER_WINDIB
79
&WINDIB_bootstrap,
80
#endif
81
#if SDL_VIDEO_DRIVER_DDRAW
82
&DIRECTX_bootstrap,
83
#endif
84
#if SDL_VIDEO_DRIVER_BWINDOW
85
&BWINDOW_bootstrap,
86
#endif
87
#if SDL_VIDEO_DRIVER_TOOLBOX
88
&TOOLBOX_bootstrap,
89
#endif
90
#if SDL_VIDEO_DRIVER_DRAWSPROCKET
91
&DSp_bootstrap,
92
#endif
93
#if SDL_VIDEO_DRIVER_CYBERGRAPHICS
94
&CGX_bootstrap,
95
#endif
96
#if SDL_VIDEO_DRIVER_PHOTON
97
&ph_bootstrap,
98
#endif
99
#if SDL_VIDEO_DRIVER_EPOC
100
&EPOC_bootstrap,
101
#endif
102
#if SDL_VIDEO_DRIVER_XBIOS
103
&XBIOS_bootstrap,
104
#endif
105
#if SDL_VIDEO_DRIVER_GEM
106
&GEM_bootstrap,
107
#endif
108
#if SDL_VIDEO_DRIVER_PICOGUI
109
&PG_bootstrap,
110
#endif
111
#if SDL_VIDEO_DRIVER_DC
112
&DC_bootstrap,
113
#endif
114
#if SDL_VIDEO_DRIVER_RISCOS
115
&RISCOS_bootstrap,
116
#endif
117
#if SDL_VIDEO_DRIVER_OS2FS
118
&OS2FSLib_bootstrap,
119
#endif
120
#if SDL_VIDEO_DRIVER_AALIB
121
&AALIB_bootstrap,
122
123
#endif
#if SDL_VIDEO_DRIVER_DUMMY
124
&DUMMY_bootstrap,
125
126
#endif
#if SDL_VIDEO_DRIVER_GLSDL
127
&glSDL_bootstrap,
128
#endif
129
NULL
130
};
131
132
static SDL_VideoDevice *_this = NULL;
133
134
/* Various local functions */
135
136
int SDL_VideoInit(const char *driver_name, Uint32 flags);
void SDL_VideoQuit(void);
137
138
static int
139
cmpmodes(const void *A, const void *B)
140
141
142
143
144
145
146
147
148
149
{
SDL_DisplayMode a = *(const SDL_DisplayMode *) A;
SDL_DisplayMode b = *(const SDL_DisplayMode *) B;
if (a.w != b.w) {
return b.w - a.w;
}
if (a.h != b.h) {
return b.h - a.h;
}
150
151
if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) {
return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format);
152
153
154
155
156
157
}
if (a.refresh_rate != b.refresh_rate) {
return b.refresh_rate - a.refresh_rate;
}
return 0;
}
158
159
int
160
SDL_GetNumVideoDrivers(void)
161
{
162
return SDL_arraysize(bootstrap) - 1;
163
164
}
165
const char *
166
SDL_GetVideoDriver(int index)
167
{
168
if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
169
170
171
return bootstrap[index]->name;
}
return NULL;
172
}
173
174
175
176
/*
* Initialize the video and event subsystems -- determine native pixel format
*/
177
int
178
SDL_VideoInit(const char *driver_name, Uint32 flags)
179
{
180
181
182
183
184
SDL_VideoDevice *video;
int index;
int i;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
185
186
/* Toggle the event thread flags, based on OS requirements */
187
#if defined(MUST_THREAD_EVENTS)
188
flags |= SDL_INIT_EVENTTHREAD;
189
#elif defined(CANT_THREAD_EVENTS)
190
if ((flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD) {
191
SDL_SetError("OS doesn't support threaded events");
192
193
return -1;
}
194
195
#endif
196
197
/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
198
SDL_VideoQuit();
199
200
201
202
203
204
205
}
/* Select the proper video driver */
index = 0;
video = NULL;
if (driver_name != NULL) {
for (i = 0; bootstrap[i]; ++i) {
206
207
208
209
if (SDL_strncmp(bootstrap[i]->name, driver_name,
SDL_strlen(bootstrap[i]->name)) == 0) {
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
210
211
212
213
214
215
}
break;
}
}
} else {
for (i = 0; bootstrap[i]; ++i) {
216
217
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
218
219
220
221
222
223
224
225
if (video != NULL) {
break;
}
}
}
}
if (video == NULL) {
if (driver_name) {
226
SDL_SetError("%s not available", driver_name);
227
} else {
228
SDL_SetError("No available video device");
229
230
231
232
233
}
return -1;
}
_this = video;
_this->name = bootstrap[i]->name;
234
_this->next_object_id = 1;
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
/* 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.accelerated = -1; /* not known, don't set */
_this->gl_config.swap_control = -1; /* not known, don't set */
/* Initialize the video subsystem */
259
260
if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
261
262
263
264
265
return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
266
267
SDL_SetError("The video driver did not add any displays");
SDL_VideoQuit();
268
269
270
271
272
return (-1);
}
/* Sort the video modes */
for (i = 0; i < _this->num_displays; ++i) {
273
274
275
SDL_qsort(_this->displays[i].display_modes,
_this->displays[i].num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
276
277
}
278
279
280
281
282
283
284
/* The software renderer is always available */
for (i = 0; i < _this->num_displays; ++i) {
if (_this->displays[i].num_render_drivers > 0) {
SDL_AddRenderDriver(i, &SDL_SW_RenderDriver);
}
}
285
/* Start the event loop */
286
287
if (SDL_StartEventLoop(flags) < 0) {
SDL_VideoQuit();
288
289
290
291
292
293
return -1;
}
/* We're ready to go! */
return 0;
}
294
295
const char *
296
SDL_GetCurrentVideoDriver()
297
298
299
300
301
302
{
if (!_this) {
return NULL;
}
return _this->name;
}
303
304
SDL_VideoDevice *
305
SDL_GetVideoDevice()
306
307
{
return _this;
308
309
}
310
void
311
SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
312
{
313
314
SDL_VideoDisplay display;
315
SDL_zero(display);
316
317
318
319
if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
320
321
SDL_AddVideoDisplay(&display);
322
323
}
324
void
325
SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
326
{
327
328
329
SDL_VideoDisplay *displays;
displays =
330
331
SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
332
333
334
335
336
337
if (displays) {
displays[_this->num_displays] = *display;
_this->displays = displays;
_this->num_displays++;
}
}
338
339
int
340
SDL_GetNumVideoDisplays(void)
341
342
343
344
345
{
if (!_this) {
return 0;
}
return _this->num_displays;
346
347
}
348
int
349
SDL_SelectVideoDisplay(int index)
350
{
351
if (!_this) {
352
SDL_SetError("Video subsystem has not been initialized");
353
354
355
356
return (-1);
}
if (index >= 0) {
if (index >= _this->num_displays) {
357
358
SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
359
360
361
362
363
return -1;
}
_this->current_display = index;
}
return _this->current_display;
364
365
}
366
void
367
SDL_AddDisplayMode(int displayIndex, const SDL_DisplayMode * mode)
368
{
369
SDL_VideoDisplay *display = &_this->displays[displayIndex];
370
371
372
373
SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
374
375
modes = display->display_modes;
nmodes = display->num_display_modes;
376
for (i = 0; i < nmodes; ++i) {
377
if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
378
379
380
381
382
return;
}
}
/* Go ahead and add the new mode */
383
modes = SDL_realloc(modes, (nmodes + 1) * sizeof(*mode));
384
if (modes) {
385
display->display_modes = modes;
386
modes[nmodes] = *mode;
387
display->num_display_modes++;
388
389
}
}
390
391
int
392
SDL_GetNumDisplayModes()
393
394
395
396
397
398
{
if (_this) {
return SDL_CurrentDisplay.num_display_modes;
}
return 0;
}
399
400
const SDL_DisplayMode *
401
SDL_GetDisplayMode(int index)
402
{
403
404
if (index < 0 || index >= SDL_GetNumDisplayModes()) {
SDL_SetError("index must be in the range of 0 - %d",
405
SDL_GetNumDisplayModes() - 1);
406
407
408
409
return NULL;
}
return &SDL_CurrentDisplay.display_modes[index];
}
410
411
const SDL_DisplayMode *
412
SDL_GetDesktopDisplayMode(void)
413
{
414
415
416
417
if (_this) {
return &SDL_CurrentDisplay.desktop_mode;
}
return NULL;
418
419
}
420
const SDL_DisplayMode *
421
SDL_GetCurrentDisplayMode(void)
422
{
423
424
425
426
if (_this) {
return &SDL_CurrentDisplay.current_mode;
}
return NULL;
427
428
}
429
SDL_DisplayMode *
430
431
SDL_GetClosestDisplayMode(const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
432
{
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
if (!_this || !mode || !closest) {
return NULL;
}
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
target_format = SDL_CurrentDisplay.desktop_mode.format;
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
target_refresh_rate = SDL_CurrentDisplay.desktop_mode.refresh_rate;
}
match = NULL;
for (i = 0; i < SDL_CurrentDisplay.num_display_modes; ++i) {
current = &SDL_CurrentDisplay.display_modes[i];
if ((current->w && current->h) &&
(current->w < mode->w || current->h < mode->h)) {
/* Out of sorted modes large enough here */
break;
}
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 ||
472
473
474
475
(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format)
&& SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
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;
}
return closest;
}
return NULL;
508
509
}
510
int
511
SDL_SetDisplayMode(const SDL_DisplayMode * mode)
512
{
513
SDL_VideoDisplay *display;
514
SDL_DisplayMode display_mode;
515
int i;
516
517
if (!_this) {
518
SDL_SetError("Video subsystem has not been initialized");
519
520
521
522
523
return -1;
}
/* Make sure there's an actual display mode to set */
if (!mode) {
524
SDL_SetError("No mode passed to SDL_SetDisplayMode");
525
526
return -1;
}
527
display = &SDL_CurrentDisplay;
528
529
530
531
display_mode = *mode;
/* Default to the current mode */
if (!display_mode.format) {
532
display_mode.format = display->current_mode.format;
533
534
}
if (!display_mode.w) {
535
display_mode.w = display->current_mode.w;
536
537
}
if (!display_mode.h) {
538
display_mode.h = display->current_mode.h;
539
540
}
if (!display_mode.refresh_rate) {
541
display_mode.refresh_rate = display->current_mode.refresh_rate;
542
543
544
}
/* Get a good video mode, the closest one possible */
545
546
547
if (!SDL_GetClosestDisplayMode(&display_mode, &display_mode)) {
SDL_SetError("No video mode large enough for %dx%d",
display_mode.w, display_mode.h);
548
549
550
551
552
return -1;
}
/* See if there's anything left to do */
if (SDL_memcmp
553
554
(&display_mode, SDL_GetCurrentDisplayMode(),
sizeof(display_mode)) == 0) {
555
556
557
return 0;
}
558
return _this->SetDisplayMode(_this, &display_mode);
559
560
}
561
SDL_WindowID
562
SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
563
564
565
566
567
568
569
570
571
572
573
574
575
576
{
const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN |
SDL_WINDOW_BORDERLESS |
SDL_WINDOW_SHOWN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_RESIZABLE |
SDL_WINDOW_MAXIMIZED |
SDL_WINDOW_MINIMIZED |
SDL_WINDOW_INPUT_GRABBED);
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
577
SDL_SetError("Video subsystem has not been initialized");
578
579
580
return 0;
}
581
SDL_zero(window);
582
window.id = _this->next_object_id++;
583
window.title = title ? SDL_strdup(title) : NULL;
584
585
586
587
588
window.x = x;
window.y = y;
window.w = w;
window.h = h;
window.flags = (flags & allowed_flags);
589
window.display = &SDL_CurrentDisplay;
590
591
if (_this->CreateWindow && _this->CreateWindow(_this, &window) < 0) {
592
if (window.title) {
593
SDL_free(window.title);
594
}
595
596
597
598
599
return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
600
601
SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
602
603
if (!windows) {
if (_this->DestroyWindow) {
604
_this->DestroyWindow(_this, &window);
605
}
606
if (window.title) {
607
SDL_free(window.title);
608
}
609
610
611
612
613
614
615
616
return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
617
618
SDL_WindowID
619
SDL_CreateWindowFrom(void *data)
620
{
621
622
623
624
625
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
626
SDL_SetError("Video subsystem has not been initialized");
627
628
629
return (0);
}
630
SDL_zero(window);
631
window.id = _this->next_object_id++;
632
window.display = &SDL_CurrentDisplay;
633
634
if (!_this->CreateWindowFrom ||
635
_this->CreateWindowFrom(_this, &window, data) < 0) {
636
637
638
639
640
return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
641
642
SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
643
644
if (!windows) {
if (_this->DestroyWindow) {
645
_this->DestroyWindow(_this, &window);
646
}
647
if (window.title) {
648
SDL_free(window.title);
649
}
650
651
652
653
654
655
656
657
return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
658
659
static __inline__ SDL_Window *
660
SDL_GetWindowFromID(SDL_WindowID windowID)
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
{
int i, j;
if (!_this) {
return NULL;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id == windowID) {
return window;
}
}
}
return NULL;
678
679
}
680
Uint32
681
SDL_GetWindowFlags(SDL_WindowID windowID)
682
{
683
SDL_Window *window = SDL_GetWindowFromID(windowID);
684
685
686
687
688
if (!window) {
return 0;
}
return window->flags;
689
690
}
691
void
692
SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)
693
{
694
SDL_Window *window = SDL_GetWindowFromID(windowID);
695
696
697
698
699
if (!window) {
return;
}
if (window->title) {
700
SDL_free(window->title);
701
}
702
window->title = SDL_strdup(title);
703
704
if (_this->SetWindowTitle) {
705
_this->SetWindowTitle(_this, window);
706
}
707
}
708
709
const char *
710
SDL_GetWindowTitle(SDL_WindowID windowID)
711
{
712
SDL_Window *window = SDL_GetWindowFromID(windowID);
713
714
715
716
717
if (!window) {
return NULL;
}
return window->title;
718
719
}
720
void
721
SDL_SetWindowData(SDL_WindowID windowID, void *userdata)
722
{
723
SDL_Window *window = SDL_GetWindowFromID(windowID);
724
725
726
727
728
if (!window) {
return;
}
window->userdata = userdata;
729
730
}
731
void *
732
SDL_GetWindowData(SDL_WindowID windowID)
733
{
734
SDL_Window *window = SDL_GetWindowFromID(windowID);
735
736
737
738
739
if (!window) {
return NULL;
}
return window->userdata;
740
741
}
742
void
743
SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)
744
{
745
SDL_Window *window = SDL_GetWindowFromID(windowID);
746
747
748
749
750
751
752
753
754
if (!window) {
return;
}
window->x = x;
window->y = y;
if (_this->SetWindowPosition) {
755
_this->SetWindowPosition(_this, window);
756
}
757
758
}
759
void
760
SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)
761
{
762
SDL_Window *window = SDL_GetWindowFromID(windowID);
763
764
765
766
767
768
769
770
771
772
if (!window) {
return;
}
if (x) {
*x = window->x;
}
if (y) {
*y = window->y;
}
773
774
}
775
void
776
SDL_SetWindowSize(SDL_WindowID windowID, int w, int h)
777
{
778
SDL_Window *window = SDL_GetWindowFromID(windowID);
779
780
781
782
783
784
785
786
787
if (!window) {
return;
}
window->w = w;
window->h = h;
if (_this->SetWindowSize) {
788
_this->SetWindowSize(_this, window);
789
}
790
791
}
792
void
793
SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *h)
794
{
795
SDL_Window *window = SDL_GetWindowFromID(windowID);
796
797
798
799
800
801
802
803
804
805
if (!window) {
return;
}
if (w) {
*w = window->w;
}
if (h) {
*h = window->h;
}
806
807
}
808
void
809
SDL_ShowWindow(SDL_WindowID windowID)
810
{
811
SDL_Window *window = SDL_GetWindowFromID(windowID);
812
813
814
815
816
817
818
819
if (!window || (window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags |= SDL_WINDOW_SHOWN;
if (_this->ShowWindow) {
820
_this->ShowWindow(_this, window);
821
}
822
823
}
824
void
825
SDL_HideWindow(SDL_WindowID windowID)
826
{
827
SDL_Window *window = SDL_GetWindowFromID(windowID);
828
829
830
831
832
833
834
835
if (!window || !(window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags &= ~SDL_WINDOW_SHOWN;
if (_this->HideWindow) {
836
_this->HideWindow(_this, window);
837
}
838
839
}
840
void
841
SDL_RaiseWindow(SDL_WindowID windowID)
842
{
843
SDL_Window *window = SDL_GetWindowFromID(windowID);
844
845
846
847
848
849
if (!window) {
return;
}
if (_this->RaiseWindow) {
850
_this->RaiseWindow(_this, window);
851
}
852
853
}
854
void
855
SDL_MaximizeWindow(SDL_WindowID windowID)
856
{
857
SDL_Window *window = SDL_GetWindowFromID(windowID);
858
859
860
861
862
863
864
865
if (!window || (window->flags & SDL_WINDOW_MAXIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MAXIMIZED;
if (_this->MaximizeWindow) {
866
_this->MaximizeWindow(_this, window);
867
}
868
869
}
870
void
871
SDL_MinimizeWindow(SDL_WindowID windowID)
872
{
873
SDL_Window *window = SDL_GetWindowFromID(windowID);
874
875
876
877
878
879
880
881
if (!window || (window->flags & SDL_WINDOW_MINIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MINIMIZED;
if (_this->MinimizeWindow) {
882
_this->MinimizeWindow(_this, window);
883
}
884
885
}
886
void
887
SDL_RestoreWindow(SDL_WindowID windowID)
888
{
889
SDL_Window *window = SDL_GetWindowFromID(windowID);
890
891
892
893
894
895
896
897
898
if (!window
|| (window->flags & (SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED))) {
return;
}
window->flags &= ~(SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED);
if (_this->RestoreWindow) {
899
_this->RestoreWindow(_this, window);
900
}
901
}
902
903
void
904
SDL_SetWindowGrab(SDL_WindowID windowID, int mode)
905
{
906
SDL_Window *window = SDL_GetWindowFromID(windowID);
907
908
909
910
911
912
913
914
915
916
917
918
if (!window || (!!mode == !!(window->flags & SDL_WINDOW_INPUT_GRABBED))) {
return;
}
if (mode) {
window->flags |= SDL_WINDOW_INPUT_GRABBED;
} else {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
}
if (_this->SetWindowGrab) {
919
_this->SetWindowGrab(_this, window);
920
}
921
922
}
923
int
924
SDL_GetWindowGrab(SDL_WindowID windowID)
925
{
926
SDL_Window *window = SDL_GetWindowFromID(windowID);
927
928
929
930
931
932
933
934
935
if (!window) {
return 0;
}
return ((window->flags & SDL_WINDOW_INPUT_GRABBED) != 0);
}
void
936
SDL_DestroyWindow(SDL_WindowID windowID)
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
{
int i, j;
if (!_this) {
return;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id != windowID) {
continue;
}
if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
953
_this->SetWindowGrab(_this, window);
954
}
955
956
if (window->renderer) {
SDL_DestroyRenderer(window->id);
957
958
}
if (_this->DestroyWindow) {
959
_this->DestroyWindow(_this, window);
960
961
}
if (window->title) {
962
SDL_free(window->title);
963
964
}
if (window->gamma) {
965
SDL_free(window->gamma);
966
967
}
if (j != display->num_windows - 1) {
968
969
970
SDL_memcpy(&display->windows[i],
&display->windows[i + 1],
(display->num_windows - i - 1) * sizeof(*window));
971
972
973
974
975
976
977
}
--display->num_windows;
return;
}
}
}
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
void
SDL_AddRenderDriver(int displayIndex, const SDL_RenderDriver * driver)
{
SDL_VideoDisplay *display = &_this->displays[displayIndex];
SDL_RenderDriver *render_drivers;
render_drivers =
SDL_realloc(display->render_drivers,
(display->num_render_drivers +
1) * sizeof(*render_drivers));
if (render_drivers) {
render_drivers[display->num_render_drivers] = *driver;
display->render_drivers = render_drivers;
display->num_render_drivers++;
}
}
int
SDL_GetNumRenderers(void)
{
if (_this) {
return SDL_CurrentDisplay.num_render_drivers;
}