This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_compat.c
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
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
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 "video/SDL_sysvideo.h"
static SDL_WindowID window;
static char *wm_title;
char *
35
SDL_AudioDriverName(char *namebuf, int maxlen)
37
const char *name = SDL_GetCurrentAudioDriver();
38
if (name) {
39
SDL_strlcpy(namebuf, name, maxlen);
40
41
42
43
44
45
return namebuf;
}
return NULL;
}
char *
46
SDL_VideoDriverName(char *namebuf, int maxlen)
48
const char *name = SDL_GetCurrentVideoDriver();
49
if (name) {
50
SDL_strlcpy(namebuf, name, maxlen);
51
52
53
54
55
return namebuf;
}
return NULL;
}
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
const SDL_VideoInfo *
SDL_GetVideoInfo(void)
{
static SDL_VideoInfo info;
/* Memory leak, compatibility code, who cares? */
if (!info.vfmt && SDL_GetDesktopDisplayMode()) {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
SDL_PixelFormatEnumToMasks(SDL_GetDesktopDisplayMode()->format, &bpp,
&Rmask, &Gmask, &Bmask, &Amask);
info.vfmt = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
}
return &info;
}
74
SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags)
75
76
77
{
int i, actual_bpp = 0;
78
if (!SDL_GetVideoDevice()) {
79
80
81
82
return 0;
}
if (!(flags & SDL_FULLSCREEN)) {
83
return SDL_BITSPERPIXEL(SDL_GetDesktopDisplayMode()->format);
86
87
for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
88
89
90
91
if (!mode->w || !mode->h || (width == mode->w && height == mode->h)) {
if (!mode->format) {
return bpp;
}
92
93
if (SDL_BITSPERPIXEL(mode->format) >= bpp) {
actual_bpp = SDL_BITSPERPIXEL(mode->format);
94
95
96
97
98
99
100
}
}
}
return actual_bpp;
}
SDL_Rect **
101
SDL_ListModes(SDL_PixelFormat * format, Uint32 flags)
102
103
104
105
{
int i, nmodes;
SDL_Rect **modes;
106
if (!SDL_GetVideoDevice()) {
107
108
109
110
111
112
113
114
115
return NULL;
}
if (!(flags & SDL_FULLSCREEN)) {
return (SDL_Rect **) (-1);
}
/* Memory leak, but this is a compatibility function, who cares? */
nmodes = 0;
116
117
for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
118
119
120
if (!mode->w || !mode->h) {
return (SDL_Rect **) (-1);
}
121
if (SDL_BITSPERPIXEL(mode->format) != format->BitsPerPixel) {
122
123
124
125
126
127
128
continue;
}
if (nmodes > 0 && modes[nmodes - 1]->w == mode->w
&& modes[nmodes - 1]->h == mode->h) {
continue;
}
129
modes = SDL_realloc(modes, (nmodes + 2) * sizeof(*modes));
130
131
132
if (!modes) {
return NULL;
}
133
modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect));
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
if (!modes[nmodes]) {
return NULL;
}
modes[nmodes]->x = 0;
modes[nmodes]->y = 0;
modes[nmodes]->w = mode->w;
modes[nmodes]->h = mode->h;
++nmodes;
}
if (modes) {
modes[nmodes] = NULL;
}
return modes;
}
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
static int (*orig_eventfilter) (const SDL_Event * event);
static int
SDL_CompatEventFilter(const SDL_Event * event)
{
SDL_Event fake;
switch (event->type) {
case SDL_WINDOWEVENT:
switch (event->window.event) {
case SDL_WINDOWEVENT_RESIZED:
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;
fake.active.gain = 1;
fake.active.state = SDL_APPINPUTFOCUS;
SDL_PushEvent(&fake);
break;
}
}
return orig_eventfilter(event);
}
206
SDL_Surface *
207
SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
209
210
int (*filter) (const SDL_Event * event);
const SDL_DisplayMode *desktop_mode;
211
212
213
214
215
216
SDL_DisplayMode mode;
int i;
Uint32 window_flags;
Uint32 desktop_format;
Uint32 desired_format;
217
218
if (!SDL_GetVideoDevice()) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
219
220
221
222
223
return NULL;
}
}
/* Destroy existing window */
224
SDL_DestroyWindow(window);
226
227
228
229
230
231
232
/* Set up the event filter */
filter = SDL_GetEventFilter();
if (filter != SDL_CompatEventFilter) {
orig_eventfilter = filter;
}
SDL_SetEventFilter(SDL_CompatEventFilter);
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/* 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;
}
247
window = SDL_CreateWindow(wm_title, 0, 0, width, height, window_flags);
248
249
250
251
252
if (!window) {
return NULL;
}
/* Set up the desired display mode */
253
254
255
256
desktop_mode = SDL_GetDesktopDisplayMode();
desktop_format = desktop_mode->format;
if (desktop_format && ((flags & SDL_ANYFORMAT)
|| (bpp == SDL_BITSPERPIXEL(desktop_format)))) {
257
258
259
desired_format = desktop_format;
} else {
switch (bpp) {
260
261
262
263
264
265
266
case 0:
if (desktop_format) {
desired_format = desktop_format;
} else {
desired_format = SDL_PixelFormat_RGB888;
}
break;
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
case 8:
desired_format = SDL_PixelFormat_Index8;
break;
case 15:
desired_format = SDL_PixelFormat_RGB555;
break;
case 16:
desired_format = SDL_PixelFormat_RGB565;
break;
case 24:
desired_format = SDL_PixelFormat_RGB24;
break;
case 32:
desired_format = SDL_PixelFormat_RGB888;
break;
default:
283
SDL_SetError("Unsupported bpp in SDL_SetVideoMode()");
284
285
286
287
288
289
290
291
292
293
return NULL;
}
}
mode.format = desired_format;
mode.w = width;
mode.h = height;
mode.refresh_rate = 0;
/* Set the desired display mode */
if (flags & SDL_FULLSCREEN) {
294
if (!SDL_GetClosestDisplayMode(&mode, &mode)) {
295
296
297
return NULL;
}
} else {
298
299
300
301
302
303
304
305
if (desktop_format) {
mode.format = desktop_format;
}
if (desktop_mode->w && desktop_mode->h) {
mode.w = desktop_mode->w;
mode.h = desktop_mode->h;
}
mode.refresh_rate = desktop_mode->refresh_rate;
307
if (SDL_SetDisplayMode(&mode) < 0) {
308
309
310
311
return NULL;
}
/* Create the display surface */
312
return SDL_CreateWindowSurface(window, desired_format, flags);
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
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
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
SDL_Surface *
SDL_CreateWindowSurface(SDL_WindowID windowID, Uint32 format, Uint32 flags)
{
SDL_Window *window = SDL_GetWindowFromID(windowID);
Uint32 black;
SDL_Surface *surface;
if (!window) {
return NULL;
}
if (!_this->CreateWindowSurface) {
return NULL;
}
if (!window->surface) {
_this->CreateWindowSurface(_this, window, flags);
if (!window->surface) {
return NULL;
}
window->surface->flags |= SDL_SCREEN_SURFACE;
/* If we have a palettized surface, create a default palette */
if (window->surface->format->palette) {
SDL_Color colors[256];
SDL_PixelFormat *vf = window->surface->format;
SDL_DitherColors(colors, vf->BitsPerPixel);
SDL_SetColors(window->surface, colors, 0, vf->palette->ncolors);
}
}
surface = window->surface;
if (window->shadow) {
SDL_FreeSurface(window->shadow);
window->shadow = NULL;
}
/* Create a shadow surface if necessary */
if ((!(flags & SDL_ANYFORMAT)
&& (format != SDL_GetCurrentDisplayMode()->format))
|| ((flags & SDL_HWPALETTE)
&& !(window->surface->flags & SDL_HWPALETTE))) {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
SDL_PixelFormatEnumToMasks(format, &bpp, &Amask, &Gmask, &Bmask,
&Amask);
window->shadow =
SDL_CreateRGBSurface(SDL_SWSURFACE, surface->w, surface->h, bpp,
Rmask, Gmask, Bmask, Amask);
if (window->shadow == NULL) {
return NULL;
}
window->shadow->flags |= SDL_SHADOW_SURFACE;
surface = window->shadow;
/* 8-bit shadow surfaces report that they have exclusive palette */
if (surface->format->palette) {
surface->flags |= SDL_HWPALETTE;
if (format == SDL_GetCurrentDisplayMode()->format) {
SDL_memcpy(surface->format->palette->colors,
window->surface->format->palette->colors,
window->surface->format->palette->ncolors *
sizeof(SDL_Color));
} else {
SDL_DitherColors(surface->format->palette->colors, bpp);
}
}
}
/* Clear the surface for display */
{
Uint32 black = SDL_MapRGB(surface->format, 0, 0, 0);
SDL_FillRect(surface, NULL, black);
if (surface->flags & SDL_DOUBLEBUF) {
SDL_Flip(surface);
SDL_FillRect(surface, NULL, black);
}
SDL_Flip(surface);
}
return surface;
}
400
SDL_Surface *
401
SDL_GetVideoSurface(void)
403
SDL_VideoDevice *_this = SDL_GetVideoDevice();
404
405
406
407
return SDL_VideoSurface;
}
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
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
472
473
474
475
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
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
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
SDL_Surface *
SDL_DisplayFormat(SDL_Surface * surface)
{
Uint32 flags;
if (!SDL_PublicSurface) {
SDL_SetError("No video mode has been set");
return (NULL);
}
/* Set the flags appropriate for copying to display surface */
if (((SDL_PublicSurface->flags & SDL_HWSURFACE) == SDL_HWSURFACE)
&& _this->info.blit_hw)
flags = SDL_HWSURFACE;
else
flags = SDL_SWSURFACE;
#ifdef AUTORLE_DISPLAYFORMAT
flags |= (surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA));
flags |= SDL_RLEACCELOK;
#else
flags |=
surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCELOK);
#endif
return (SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags));
}
SDL_Surface *
SDL_DisplayFormatAlpha(SDL_Surface * surface)
{
SDL_PixelFormat *vf;
SDL_PixelFormat *format;
SDL_Surface *converted;
Uint32 flags;
/* 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);
flags = SDL_PublicSurface->flags & SDL_HWSURFACE;
flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
converted = SDL_ConvertSurface(surface, format, flags);
SDL_FreeFormat(format);
return (converted);
}
void
SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
{
if (screen) {
SDL_Rect rect;
/* Perform some checking */
if (w == 0)
w = screen->w;
if (h == 0)
h = screen->h;
if ((int) (x + w) > screen->w)
return;
if ((int) (y + h) > screen->h)
return;
/* Fill the rectangle */
rect.x = (Sint16) x;
rect.y = (Sint16) y;
rect.w = (Uint16) w;
rect.h = (Uint16) h;
SDL_UpdateRects(screen, 1, &rect);
}
}
void
SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects)
{
int i;
SDL_Window *window;
/* Find the window corresponding to this surface */
window = SDL_GetWindowFromSurface(screen);
if (!window) {
SDL_SetError("Couldn't find window associated with surface");
return;
}
if (screen->flags & SDL_SHADOW_SURFACE) {
if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
SDL_LockCursor();
SDL_DrawCursor(screen);
for (i = 0; i < numrects; ++i) {
SDL_LowerBlit(screen, &rects[i], window->surface, &rects[i]);
}
SDL_EraseCursor(screen);
SDL_UnlockCursor();
} else {
for (i = 0; i < numrects; ++i) {
SDL_LowerBlit(screen, &rects[i], window->surface, &rects[i]);
}
}
/* Fall through to video surface update */
screen = window->surface;
}
if ((screen->flags & SDL_SCREEN_SURFACE) && _this->UpdateWindowSurface) {
/* Update the video surface */
if (screen->offset) {
int offset_y = screen->offset / screen->pitch;
int offset_x = screen->offset % screen->pitch;
for (i = 0; i < numrects; ++i) {
rects[i].x += offset_x;
rects[i].y += offset_y;
}
_this->UpdateWindowSurface(_this, window, numrects, rects);
for (i = 0; i < numrects; ++i) {
rects[i].x -= offset_x;
rects[i].y -= offset_y;
}
} else {
_this->UpdateWindowSurface(_this, window, numrects, rects);
}
}
}
int
SDL_Flip(SDL_Surface * screen)
{
SDL_Window *window;
/* Find the window corresponding to this surface */
window = SDL_GetWindowFromSurface(screen);
if (!window) {
SDL_SetError("Couldn't find window associated with surface");
return;
}
/* Copy the shadow surface to the video surface */
if (screen->flags & SDL_SHADOW_SURFACE) {
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = screen->w;
rect.h = screen->h;
if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
SDL_LockCursor();
SDL_DrawCursor(screen);
SDL_LowerBlit(screen, &rect, window->surface, &rect);
SDL_EraseCursor(screen);
SDL_UnlockCursor();
} else {
SDL_LowerBlit(screen, &rect, window->surface, &rect);
}
/* Fall through to video surface update */
screen = window->surface;
}
if (screen->flags & SDL_DOUBLEBUF) {
_this->FlipWindowSurface(_this, window);
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
}
return (0);
}
604
SDL_WM_SetCaption(const char *title, const char *icon)
605
606
{
if (wm_title) {
607
SDL_free(wm_title);
608
} else {
609
wm_title = SDL_strdup(title);
611
SDL_SetWindowTitle(window, wm_title);
612
613
614
}
void
615
SDL_WM_GetCaption(char **title, char **icon)
616
617
618
619
620
621
622
623
624
625
{
if (title) {
*title = wm_title;
}
if (icon) {
*icon = "";
}
}
void
626
SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
627
628
629
630
631
{
/* FIXME */
}
int
632
SDL_WM_IconifyWindow(void)
634
SDL_MinimizeWindow(window);
635
636
637
}
int
638
SDL_WM_ToggleFullScreen(SDL_Surface * surface)
639
640
641
642
643
{
return 0;
}
SDL_GrabMode
644
SDL_WM_GrabInput(SDL_GrabMode mode)
645
646
{
if (mode != SDL_GRAB_QUERY) {
647
SDL_SetWindowGrab(window, mode);
649
return (SDL_GrabMode) SDL_GetWindowGrab(window);
650
651
652
}
Uint8
653
SDL_GetAppState(void)
654
655
656
657
{
Uint8 state = 0;
Uint32 flags = 0;
658
flags = SDL_GetWindowFlags(window);
659
660
661
662
663
664
665
666
667
668
669
670
671
if ((flags & SDL_WINDOW_SHOWN) && !(flags & SDL_WINDOW_MINIMIZED)) {
state |= SDL_APPACTIVE;
}
if (flags & SDL_WINDOW_KEYBOARD_FOCUS) {
state |= SDL_APPINPUTFOCUS;
}
if (flags & SDL_WINDOW_MOUSE_FOCUS) {
state |= SDL_APPMOUSEFOCUS;
}
return state;
}
const SDL_version *
672
SDL_Linked_Version(void)
673
674
{
static SDL_version version;
675
SDL_VERSION(&version);
676
677
678
679
return &version;
}
int
680
681
SDL_SetPalette(SDL_Surface * surface, int flags, SDL_Color * colors,
int firstcolor, int ncolors)
683
SDL_SetColors(surface, colors, firstcolor, ncolors);
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
int
SDL_SetScreenColors(SDL_Surface * screen, SDL_Color * colors, int firstcolor,
int ncolors)
{
SDL_Window *window = NULL;
SDL_Palette *pal;
int gotall;
int palsize;
/* Verify the parameters */
pal = screen->format->palette;
if (!pal) {
return 0; /* not a palettized surface */
}
gotall = 1;
palsize = 1 << screen->format->BitsPerPixel;
if (ncolors > (palsize - firstcolor)) {
ncolors = (palsize - firstcolor);
gotall = 0;
}
if (screen->flags & (SDL_SHADOW_SURFACE | SDL_SCREEN_SURFACE)) {
window = SDL_GetWindowFromSurface(screen);
if (!window) {
return 0;
}
}
if (screen->flags & SDL_SHADOW_SURFACE) {
SDL_Palette *vidpal;
vidpal = window->surface->format->palette;
if (vidpal && vidpal->ncolors == pal->ncolors) {
/* This is a shadow surface, and the physical
* framebuffer is also indexed. Propagate the
* changes to its logical palette so that
* updates are always identity blits
*/
SDL_memcpy(vidpal->colors + firstcolor, colors,
ncolors * sizeof(*colors));
}
if (window->surface->flags & SDL_HWPALETTE) {
/* Set the physical palette */
screen = window->surface;
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
}
}
if (screen->flags & SDL_SCREEN_SURFACE) {
if (_this->SetWindowColors) {
gotall =
_this->SetWindowColors(_this, window, firstcolor, ncolors,
colors);
if (!gotall) {
/* The video flags shouldn't have SDL_HWPALETTE, and
the video driver is responsible for copying back the
correct colors into the video surface palette.
*/
;
}
}
SDL_CursorPaletteChanged();
}
return gotall;
}
755
SDL_GetWMInfo(SDL_SysWMinfo * info)
757
return SDL_GetWindowWMInfo(window, info);
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
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:
{
Uint32 *dst;
int dstskip;
dst = (Uint32 *) screen->pixels +
(SDL_cursor->area.y + area->y) * screen->pitch / 4 +
SDL_cursor->area.x;
dstskip = (screen->pitch / 4) - 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 = pixels[datab >> 7];
}
maskb <<= 1;
datab <<= 1;
dst++;
}
}
dst += dstskip;
}
}
break;
}
}
static void
SDL_DrawCursorSlow(SDL_Surface * screen, SDL_Rect * area)
{
const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
int h;
int x, minx, maxx;
Uint8 *data, datab = 0;
Uint8 *mask, maskb = 0;
Uint8 *dst;
int dstbpp, dstskip;
data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
dstbpp = screen->format->BytesPerPixel;
dst = (Uint8 *) screen->pixels +
(SDL_cursor->area.y + area->y) * screen->pitch +
SDL_cursor->area.x * dstbpp;
dstskip = screen->pitch - SDL_cursor->area.w * dstbpp;
minx = area->x;
maxx = area->x + area->w;
if (screen->format->BytesPerPixel == 1) {
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;
}
for (h = area->h; h; h--) {
for (x = 0; x < SDL_cursor->area.w; ++x) {
if ((x % 8) == 0) {
maskb = *mask++;
datab = *data++;
}
if ((x >= minx) && (x < maxx)) {
if (maskb & 0x80) {
SDL_memset(dst, pixels8[datab >> 7], dstbpp);
}
}
maskb <<= 1;
datab <<= 1;
dst += dstbpp;
}
dst += dstskip;
}
} else {
for (h = area->h; h; h--) {
for (x = 0; x < SDL_cursor->area.w; ++x) {
if ((x % 8) == 0) {
maskb = *mask++;
datab = *data++;
}
if ((x >= minx) && (x < maxx)) {
if (maskb & 0x80) {
SDL_memset(dst, pixels[datab >> 7], dstbpp);
}