-
Notifications
You must be signed in to change notification settings - Fork 0
/
rudl_video_display_surface.c
803 lines (679 loc) · 25 KB
/
rudl_video_display_surface.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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
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
400
401
402
403
404
405
406
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
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
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
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
674
675
676
677
678
679
680
681
682
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
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
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
/*
RUDL - a C library wrapping SDL for use in Ruby.
Copyright (C) 2001, 2002, 2003 Danny van Bruggen
$Log: rudl_video_display_surface.c,v $
Revision 1.25 2004/10/23 19:54:22 rennex
Fixed docs
Revision 1.24 2004/08/04 23:03:46 tsuihark
Updated all documentation to Dokumentat format.
Revision 1.23 2004/01/25 00:21:34 rennex
Added DisplaySurface.get
Made DisplaySurface#destroy also a class method
Tweaked docs
Revision 1.22 2004/01/21 22:55:10 tsuihark
Converted to Dokumentat format.
Revision 1.21 2004/01/04 19:48:45 rennex
Added automatic fixing of window clipping after a resize.
Changed default window title to "RUDL window"
Revision 1.20 2003/12/23 01:29:30 rennex
Tweaked docs
Revision 1.19 2003/12/03 16:04:11 rennex
Tweaked the docs a bit
Revision 1.18 2003/12/01 23:30:27 rennex
Added mask_string size check in set_icon
Revision 1.17 2003/12/01 22:36:49 rennex
Fixed some typos in docs
Revision 1.16 2003/12/01 19:14:24 rennex
Added transparency support to set_icon
Revision 1.15 2003/11/28 23:58:44 rennex
Added set_icon, but without transparency support
Revision 1.14 2003/10/26 15:29:32 tsuihark
Did stuff
Revision 1.13 2003/10/05 16:59:53 tsuihark
Fixed a lot of documentation
*/
#include "rudl_events.h"
#include "rudl_video.h"
#ifdef HAVE_SDL_IMAGE_H
#include "SDL_image.h"
#endif
///////////////////////////////// DISPLAYSURFACE
/**
@file DisplaySurface
@class DisplaySurface
The DisplaySurface is the surface that represents the window or the full screen that you
will be drawing and blitting on.
Since it is inherited from @Surface, it can be used just like an ordinary surface.
You will need to create a DisplaySurface to show anything on your screen.
*/
/**
@section Initializers
@method new( size ) => DisplaySurface
@method new( size, flags ) => DisplaySurface
@method new( size, flags, depth ) => DisplaySurface
<ul>
<li>@size is the requested size for the new display in [w,h] format.
<li>@flags is a combination of the following:
<ul>
<li><code>SWSURFACE</code>, to create the display in normal memory,
<li><code>HWSURFACE</code>, to create the display in the memory of your video hardware, if possible,
<li><code>ASYNCBLIT</code>, to (i quote) "enable the use of asynchronous to the display surface.
This will usually slow down blitting on single CPU machines, but may provide a speed increase on SMP systems."
<li><code>RESIZABLE</code>, to make a resizable display (see events to find the event that it sends),
<li><code>HWPALETTE</code>, to grab the system palette,
<li><code>DOUBLEBUF</code>, to enable double buffered hardware pageflipping. Use @flip with this.
<li><code>FULLSCREEN</code>, attempts to grab all of the screen,
<li><code>NOFRAME</code>, leaves the frame off the window.
<li><code>OPENGL</code>, to create an OpenGL window.
</ul>
<li>@depth selects the bits per pixel value (8 is 256 colors, 16 is thousands of colors,
24 and 32 are millions of colors). If it is not supplied, a good one will be selected for you.
</ul>
*/
static VALUE displaySurface_new(int argc, VALUE* argv, VALUE self)
{
SDL_Surface* surf;
Uint32 flags = SDL_SWSURFACE;
int depth = 0, hasbuf, numargs;
Sint16 w=0, h=0;
char* title, *icontitle;
VALUE vsize, vflags, vdepth;
initVideo();
switch (numargs = rb_scan_args(argc, argv, "12", &vsize, &vflags, &vdepth)) {
case 3: depth = NUM2INT(vdepth);
case 2: flags = PARAMETER2FLAGS(vflags);
}
PARAMETER2COORD(vsize, &w, &h);
/* store parameters for re-setting video mode after a resize event */
currDSnumargs = numargs;
currDSflags = vflags;
currDSdepth = vdepth;
if (flags & SDL_OPENGL) {
if (flags & SDL_DOUBLEBUF) {
flags &= ~SDL_DOUBLEBUF;
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
} else {
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 0);
}
if (argc > 2) {
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, depth);
}
surf = SDL_SetVideoMode(w, h, depth, flags);
if (!surf) SDL_RAISE;
SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &hasbuf);
if (hasbuf) surf->flags |= SDL_DOUBLEBUF;
} else {
if (argc < 3) flags |= SDL_ANYFORMAT;
surf = SDL_SetVideoMode(w, h, depth, flags);
if (!surf) SDL_RAISE;
}
SDL_WM_GetCaption(&title, &icontitle);
SDL_PumpEvents();
/* don't change the title if this was a call to resize the window! */
if (!title || !*title) {
SDL_WM_SetCaption("RUDL window", "RUDL");
}
currentDisplaySurface = Data_Wrap_Struct(classDisplaySurface, 0, 0, surf);
return currentDisplaySurface;
}
/**
@section Methods
@method destroy -> nil
Destroys the display, removing the window or returning from fullscreen mode.
Do not call methods on a destroyed DisplaySurface!
*/
static VALUE displaySurface_destroy(VALUE self)
{
currentDisplaySurface = NULL; /* just in case */
quitVideo();
return Qnil;
}
/**
@method DisplaySurface.get => DisplaySurface or nil
Gets the current DisplaySurface, or nil if there isn't one.
*/
static VALUE displaySurface_get(VALUE self)
{
if (SDL_GetVideoSurface()) {
return currentDisplaySurface;
} else {
return Qnil;
}
}
/**
@section Video modes
@method DisplaySurface.modes => [w,h] or nil
@method DisplaySurface.modes( bitdepth ) => [w,h] or nil
@method DisplaySurface.modes( bitdepth, flags ) => [w,h] or nil
Lists available modes for a certain @bitdepth and optionally only those modes that
can do @flags.
Flags are like those in @DisplaySurface.new.
No flags is the same as passing <code>FULLSCREEN</code>.
Return value nil means any mode is ok, an empty array means <em>no</em> mode is supported.
*/
static VALUE displaySurface_modes(int argc, VALUE* argv, VALUE self)
{
SDL_PixelFormat format;
SDL_Rect** rects;
int flags=SDL_FULLSCREEN;
VALUE list, size;
VALUE bppObject, flagsObject;
format.BitsPerPixel = 0;
initVideo();
switch(rb_scan_args(argc, argv, "02", &bppObject, &flagsObject)){
case 2:
flags=NUM2UINT(flagsObject);
case 1:
format.BitsPerPixel=(Uint8)NUM2UINT(bppObject);
break;
}
if(format.BitsPerPixel==0){
format.BitsPerPixel = SDL_GetVideoInfo()->vfmt->BitsPerPixel;
}
rects = SDL_ListModes(&format, flags);
if(rects == (SDL_Rect**)-1){
return Qnil;
}
list=rb_ary_new();
if(!rects) return list;
for(; *rects; ++rects){
size=rb_ary_new3(2, INT2NUM((*rects)->w), INT2NUM((*rects)->h));
rb_ary_push(list, size);
}
return list;
}
/**
@method DisplaySurface.mode_ok? => boolean
Like @new, but doesn't set the mode, only returns true if the mode can be set,
and false if it can't.
*/
static VALUE displaySurface_mode_ok_(int argc, VALUE* argv, VALUE self)
{
int flags=SDL_SWSURFACE, depth=0;
Sint16 w, h;
VALUE vsize, vflags, vdepth;
initVideo();
rb_scan_args(argc, argv, "12", &vsize, &vflags, &vdepth);
PARAMETER2COORD(vsize, &w, &h);
if(argc>2){
flags=PARAMETER2FLAGS(vflags);
if(argc>3){
depth=NUM2INT(vdepth);
}else{
depth=SDL_GetVideoInfo()->vfmt->BitsPerPixel;
}
}
return UINT2NUM(SDL_VideoModeOK(w, h, depth, flags));
}
/**
@section Methods
@method info
See @best_mode_info
*/
/**
@section Video modes
@method best_mode_info
This method returns a hash filled with information about the video hardware.
These entries are true or false:
<ul>
<li>hardware surfaces available
<li>window manager available
<li>hardware to hardware blits accelerated
<li>hardware to hardware colorkey blits accelerated
<li>hardware to hardware alpha blits accelerated
<li>software to hardware blits accelerated
<li>software to hardware colorkey blits accelerated
<li>software to hardware alpha blits accelerated
<li>color fills accelerated
<li>video memory (in kilobytes)
</ul>
There is currently no difference between @best_mode_info and @info,
except that one is a class method and the other an instance method,
but there may be differences in the future.
*/
static VALUE get_video_info()
{
const SDL_VideoInfo* info=SDL_GetVideoInfo();
VALUE retval=rb_hash_new();
rb_hash_aset(retval, CSTR2STR("hardware surfaces available"), INT2BOOL(info->hw_available));
rb_hash_aset(retval, CSTR2STR("window manager available"), INT2BOOL(info->wm_available));
rb_hash_aset(retval, CSTR2STR("hardware to hardware blits accelerated"), INT2BOOL(info->blit_hw));
rb_hash_aset(retval, CSTR2STR("hardware to hardware colorkey blits accelerated"), INT2BOOL(info->blit_hw_CC));
rb_hash_aset(retval, CSTR2STR("hardware to hardware alpha blits accelerated"), INT2BOOL(info->blit_hw_A));
rb_hash_aset(retval, CSTR2STR("software to hardware blits accelerated"), INT2BOOL(info->blit_sw));
rb_hash_aset(retval, CSTR2STR("software to hardware colorkey blits accelerated"), INT2BOOL(info->blit_sw_CC));
rb_hash_aset(retval, CSTR2STR("software to hardware alpha blits accelerated"), INT2BOOL(info->blit_sw_A));
rb_hash_aset(retval, CSTR2STR("color fills accelerated"), INT2BOOL(info->blit_fill));
rb_hash_aset(retval, CSTR2STR("video memory"), UINT2NUM(info->video_mem));
return retval;
}
static VALUE displaySurface_best_mode_info(VALUE self)
{
initVideo();
if(SDL_GetVideoSurface()==NULL){
return get_video_info();
}else{
SDL_RAISE_S("Cannot be called after creating a DisplaySurface");
return Qnil;
}
}
static VALUE displaySurface_info(VALUE self)
{
initVideo();
return get_video_info();
}
/**
@section OpenGL
RUDL supports setting up an OpenGL window in a cross platform way.
Several other methods apply. See @flip and @new.
*/
/**
@method VideoSurface.gl_set_attribute( name, value ) => self
Set an attribute of the OpenGL subsystem before intialization.
*/
static VALUE displaySurface_gl_set_attribute(VALUE self, VALUE attribute, VALUE value)
{
SDL_VERIFY(SDL_GL_SetAttribute(NUM2INT(attribute), NUM2INT(value))==0);
return self;
}
/**
@method VideoSurface.gl_get_attribute( name ) => Number
From the SDL documentation:
Get an attribute of the OpenGL subsystem from the windowing
interface, such as glX. This is of course different from getting
the values from SDL's internal OpenGL subsystem, which only
stores the values you request before initialization.
Developers should track the values they pass into SDL_GL_SetAttribute
themselves if they want to retrieve these values.
*/
static VALUE displaySurface_gl_get_attribute(VALUE self, VALUE attribute)
{
int buf;
SDL_VERIFY(SDL_GL_GetAttribute(NUM2INT(attribute), &buf)==0);
return INT2NUM(buf);
}
/**@section Methods
@method driver => String
Returns the name of the videodriver that is being used.
*/
static VALUE displaySurface_driver(VALUE self)
{
char buf[256];
if(!SDL_VideoDriverName(buf, sizeof(buf))){
return rb_str_new2("");
}
return rb_str_new2(buf);
}
/**
@method update => self
@method update( rect ) => self
This call will update a section (or sections) of the display screen.
You must update an area of your display when you change its contents.
@rect is an array of rectangles.
If passed with no arguments, this will update the entire display surface.
This call cannot be used on OpenGL displays, and will generate an exception.
*/
static VALUE displaySurface_update(int argc, VALUE* argv, VALUE self)
{
VALUE rectObject;
int i, total_rects;
SDL_Rect* rects;
GET_SURFACE;
if(surface->flags&SDL_OPENGL) SDL_RAISE_S("Cannot update an OPENGL display");
switch(rb_scan_args(argc, argv, "01", &rectObject)){
case 0:
SDL_UpdateRect(surface, 0, 0, 0, 0);
return self;
case 1:
Check_Type(rectObject, T_ARRAY);
total_rects=RARRAY(rectObject)->len;
rects=malloc(sizeof(SDL_Rect)*total_rects);
for(i=0; i<total_rects; i++){
PARAMETER2CRECT(rb_ary_entry(rectObject, i), rects+i);
RUDL_ASSERT((rects+i)->w != 0, "rectangle width is zero");
RUDL_ASSERT((rects+i)->h != 0, "rectangle height is zero");
RUDL_ASSERT((rects+i)->x >= 0, "rectangle out of bounds at left");
RUDL_ASSERT((rects+i)->y >= 0, "rectangle out of bounds at top");
RUDL_ASSERT((rects+i)->x+(rects+i)->w <= surface->w, "rectangle out of bounds at right");
RUDL_ASSERT((rects+i)->y+(rects+i)->h <= surface->h, "rectangle out of bounds at bottom");
}
SDL_UpdateRects(surface, total_rects, rects);
free(rects);
}
return self;
}
/**
@method flip => self
This will update the contents of the entire display.
If your display mode is using the flags <code>HWSURFACE</code> and <code>DOUBLEBUF</code>, this
will wait for a vertical retrace (if the video driver supports it)
and swap the surfaces.
If you are using a different type of display mode, it will simply update
the entire contents of the surface.
When using an OpenGL display mode this will perform a gl buffer swap.
*/
static VALUE displaySurface_flip(VALUE self)
{
SDL_Surface* surface=retrieveSurfacePointer(self);
if(surface->flags&SDL_OPENGL){
SDL_GL_SwapBuffers();
}else{
if(SDL_Flip(retrieveSurfacePointer(self))==-1) SDL_RAISE;
}
return self;
}
/**
@section Windowing system
@method active? -> boolean
Returns true if the application is active (i.e. not minimized).
*/
static VALUE displaySurface_active_(VALUE self)
{
return INT2BOOL((SDL_GetAppState()&SDL_APPACTIVE) != 0);
}
/**
@method caption => [String, String]
Returns the title and icontitle of the window.
*/
/**
@method set_caption( title ) -> self
@method set_caption( title, icontitle ) -> self
Sets the title of the window (if the application runs in a window) to @title.
Supplying @icontitle sets the title of the icon that shows when the application is iconified to @icontitle,
or @title if @icontitle is not supplied.
*/
static VALUE displaySurface_set_caption(int argc, VALUE* argv, VALUE self)
{
VALUE titleObject, iconTitleObject;
char* title;
char* iconTitle="RUDL application";
rb_scan_args(argc, argv, "11", &titleObject, &iconTitleObject);
if(argc==2){
iconTitle=STR2CSTR(iconTitleObject);
}
title=STR2CSTR(titleObject);
SDL_WM_SetCaption(title, iconTitle);
return self;
}
static VALUE displaySurface_caption(VALUE self)
{
char* title, *icontitle;
SDL_WM_GetCaption(&title, &icontitle);
if(title && *title){
return rb_ary_new3(2, rb_str_new2(title), rb_str_new2(icontitle));
}
return rb_ary_new3(2, rb_str_new2(""), rb_str_new2(""));
}
/**
@method set_icon( icon_surface ) -> nil
@method set_icon( icon_surface, mask_string ) -> nil
Sets the icon for the display window.
The SDL docs say this must be called before calling DisplaySurface.new, but
at least on Windows this is not true. This method exists also as a class method
of DisplaySurface.
Win32 icons must be 32x32 to work properly.
If @icon_surface has a colorkey set, that color will be transparent. (Since
SDL currently handles that wrong, RUDL generates the mask instead, unless
you supply nil for mask_string.)
Alternatively, you can supply @mask_string where each byte represents
the visibility of 8 pixels (MSB is the leftmost pixel, 0 means transparent).
*/
static VALUE displaySurface_set_icon(int argc, VALUE* argv, VALUE self)
{
VALUE icon, mask;
SDL_Surface* surface;
Uint8* maskstr = NULL;
Uint8* maskptr = NULL;
rb_scan_args(argc, argv, "11", &icon, &mask);
surface = retrieveSurfacePointer(icon);
/* custom mask supplied? */
if (argc == 2) {
if (mask != Qnil) {
RUDL_VERIFY(RSTRING(mask)->len >= surface->h*((surface->w + 7)/8), "Not enough data in mask_string");
maskstr = STR2CSTR(mask);
}
/* colorkey set? generate a working mask, unlike SDL currently :) */
} else if (surface->flags & SDL_SRCCOLORKEY) {
Sint16 x, y, xb;
Uint8 bit, b;
int wb = (surface->w + 7) / 8; /* width in bytes */
Uint32 key = surface->format->colorkey;
/* get memory for the mask. It gets freed when we exit this function */
maskptr = maskstr = ALLOCA_N(Uint8, wb * surface->h);
for (y=0; y < surface->h; y++) {
x = 0;
for (xb=0; xb < wb; xb++) {
b = 0;
for (bit=0x80; bit; bit >>= 1) {
if (internal_get(surface, x, y) != key) {
b |= bit;
}
x++;
}
*maskptr++ = b;
}
}
}
SDL_WM_SetIcon(surface, maskstr);
return Qnil;
}
/**
@method iconify => boolean
Iconifies (minimizes) the application.
Returns true if successful.
*/
static VALUE displaySurface_iconify(VALUE self)
{
return INT2BOOL(SDL_WM_IconifyWindow()!=0);
}
/**
@section Methods
@method gamma=( [r,g,b] ) -> boolean
@method gamma=( intensity ) -> boolean
Sets the gamma value for the display when this is supported.
@intensity is a shortcut for values where r=g=b.
*/
static VALUE displaySurface_gamma_(VALUE self, VALUE color)
{
float r, g, b;
VALUE tmp;
if(rb_obj_is_kind_of(color, rb_cArray)){
if(RARRAY(color)->len==3){
tmp=rb_ary_entry(color, 0); r=NUM2FLT(tmp);
tmp=rb_ary_entry(color, 1); g=NUM2FLT(tmp);
tmp=rb_ary_entry(color, 2); b=NUM2FLT(tmp);
}else{
SDL_RAISE_S("Want [r,g,b] array");
return Qnil;
}
}else{
r=g=b=NUM2FLT(color);
}
return INT2BOOL(SDL_SetGamma(r, g, b)==0);
}
/**
@method toggle_fullscreen
Toggles between fullscreen and windowed mode.
The code is experimental and is known to crash in some cases,
please report problems if found.
It might be better to not use this at all and use DisplaySurface.destroy to dispose
of the current DisplaySurface and create a new one with DisplaySurface.new with the
FULLSCREEN flag toggled.
*/
/*
* (This code may be considered public domain, and under no licensing
* restrictions. --rcg.)
*/
/*
* Attempt to flip the video surface to fullscreen or windowed mode.
* Attempts to maintain the surface's state, but makes no guarantee
* that pointers (i.e., the surface's pixels field) will be the same
* after this call.
*
* Caveats: Your surface pointers will be changing; if you have any other
* copies laying about, they are invalidated.
*
* Do NOT call this from an SDL event filter on Windows. You can
* call it based on the return values from SDL_PollEvent, etc, just
* not during the function you passed to SDL_SetEventFilter().
*
* Thread safe? Likely not.
*
* This has been tested briefly under Linux/X11 and Win/DirectX. YMMV.
*
* Palette setting is possibly/probably broken. Please fix.
*
* @param surface pointer to surface ptr to toggle. May be different
* pointer on return. MAY BE NULL ON RETURN IF FAILURE!
* @param flags pointer to flags to set on surface. The value pointed
* to will be XOR'd with SDL_FULLSCREEN before use. Actual
* flags set will be filled into pointer. Contents are
* undefined on failure. Can be NULL, in which case the
* surface's current flags are used.
* @return non-zero on success, zero on failure.
*/
static int attempt_fullscreen_toggle(SDL_Surface **surface, Uint32 *flags)
{
long framesize = 0;
void *pixels = NULL;
SDL_Rect clip;
Uint32 tmpflags = 0;
int w = 0;
int h = 0;
int bpp = 0;
int grabmouse = (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON);
int showmouse = SDL_ShowCursor(-1);
#ifdef BROKEN
SDL_Color *palette = NULL;
int ncolors = 0;
#endif
DEBUG_S("attempting to toggle fullscreen flag...");
if ( (!surface) || (!(*surface)) ) /* don't try if there's no surface. */
{
DEBUG_S("Null surface (?!). Not toggling fullscreen flag.");
return(0);
} /* if */
if (SDL_WM_ToggleFullScreen(*surface))
{
DEBUG_S("SDL_WM_ToggleFullScreen() seems to work on this system.");
if (flags)
*flags ^= SDL_FULLSCREEN;
return(1);
} /* if */
if ( !(SDL_GetVideoInfo()->wm_available) )
{
DEBUG_S("No window manager. Not toggling fullscreen flag.");
return(0);
} /* if */
DEBUG_S("toggling fullscreen flag The Hard Way...");
tmpflags = (*surface)->flags;
w = (*surface)->w;
h = (*surface)->h;
bpp = (*surface)->format->BitsPerPixel;
if (flags == NULL) /* use the surface's flags. */
flags = &tmpflags;
SDL_GetClipRect(*surface, &clip);
/* save the contents of the screen. */
if ( (!(tmpflags & SDL_OPENGL)) && (!(tmpflags & SDL_OPENGLBLIT)) )
{
framesize = (w * h) * ((*surface)->format->BytesPerPixel);
pixels = malloc(framesize);
if (pixels == NULL)
return(0);
memcpy(pixels, (*surface)->pixels, framesize);
} /* if */
#ifdef BROKEN
if ((*surface)->format->palette != NULL)
{
ncolors = (*surface)->format->palette->ncolors;
palette = malloc(ncolors * sizeof (SDL_Color));
if (palette == NULL)
{
free(pixels);
return(0);
} /* if */
memcpy(palette, (*surface)->format->palette->colors,
ncolors * sizeof (SDL_Color));
} /* if */
#endif
if (grabmouse)
SDL_WM_GrabInput(SDL_GRAB_OFF);
SDL_ShowCursor(1);
*surface = SDL_SetVideoMode(w, h, bpp, (*flags) ^ SDL_FULLSCREEN);
if (*surface != NULL)
*flags ^= SDL_FULLSCREEN;
else /* yikes! Try to put it back as it was... */
{
*surface = SDL_SetVideoMode(w, h, bpp, tmpflags);
if (*surface == NULL) /* completely screwed. */
{
if (pixels != NULL)
free(pixels);
#ifdef BROKEN
if (palette != NULL)
free(palette);
#endif
return(0);
} /* if */
} /* if */
/* Unfortunately, you lose your OpenGL image until the next frame... */
if (pixels != NULL)
{
memcpy((*surface)->pixels, pixels, framesize);
free(pixels);
} /* if */
#ifdef BROKEN
if (palette != NULL)
{
/* !!! FIXME : No idea if that flags param is right. */
SDL_SetPalette(*surface, SDL_LOGPAL, palette, 0, ncolors);
free(palette);
} /* if */
#endif
SDL_SetClipRect(*surface, &clip);
if (grabmouse)
SDL_WM_GrabInput(SDL_GRAB_ON);
SDL_ShowCursor(showmouse);
return(1);
} /* attempt_fullscreen_toggle */
static VALUE displaySurface_toggle_fullscreen(VALUE self)
{
VALUE result;
GET_SURFACE;
result=INT2BOOL(attempt_fullscreen_toggle(&surface, NULL)!=0);
DATA_PTR(self)=surface;
return result;
//return INT2BOOL(SDL_WM_ToggleFullScreen(retrieveSurfacePointer(self))!=0); <- old code
}
///////////////////////////////// INIT
void initVideoDisplaySurfaceClasses()
{
classDisplaySurface=rb_define_class_under(moduleRUDL, "DisplaySurface", classSurface);
rb_define_singleton_method(classDisplaySurface, "new", displaySurface_new, -1);
rb_define_singleton_method(classDisplaySurface, "modes", displaySurface_modes, -1);
rb_define_singleton_method(classDisplaySurface, "mode_ok?", displaySurface_mode_ok_, -1);
rb_define_singleton_method(classDisplaySurface, "best_mode_info", displaySurface_best_mode_info, 0);
rb_define_singleton_method(classDisplaySurface, "gl_set_attribute", displaySurface_gl_set_attribute, 2);
rb_define_singleton_method(classDisplaySurface, "gl_get_attribute", displaySurface_gl_get_attribute, 1);
rb_define_singleton_method(classDisplaySurface, "get", displaySurface_get, 0);
rb_define_singleton_and_instance_method(classDisplaySurface, "destroy", displaySurface_destroy, 0);
rb_define_singleton_and_instance_method(classDisplaySurface, "set_icon", displaySurface_set_icon, -1);
rb_define_method(classDisplaySurface, "driver", displaySurface_driver, 0);
rb_define_method(classDisplaySurface, "info", displaySurface_info, 0);
rb_define_method(classDisplaySurface, "update", displaySurface_update, -1);
rb_define_method(classDisplaySurface, "flip", displaySurface_flip, 0);
rb_define_method(classDisplaySurface, "active?", displaySurface_active_, 0);
rb_define_method(classDisplaySurface, "caption", displaySurface_caption, 0);
rb_define_method(classDisplaySurface, "iconify", displaySurface_iconify, 0);
rb_define_method(classDisplaySurface, "set_caption", displaySurface_set_caption, -1);
rb_define_method(classDisplaySurface, "gamma=", displaySurface_gamma_, 1);
rb_define_method(classDisplaySurface, "toggle_fullscreen", displaySurface_toggle_fullscreen, 0);
rb_eval_string(
"module RUDL class DisplaySurface \n"
" def inspect \n"
" \"<DisplaySurface: #{w}x#{h},#{bitsize}>\" \n"
" end \n"
"end end \n"
);
}