src/video/bwindow/SDL_sysvideo.cc
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FUNCTIONS
This source file includes following functions.
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id: SDL_sysvideo.cc,v 1.4.2.11 2001/02/10 07:20:05 hercules Exp $";
26 #endif
27
28 /* BWindow based framebuffer implementation */
29
30 #include <stdlib.h>
31 #include <string.h>
32
33 #include <stdio.h>
34 #include <unistd.h>
35
36 #include "SDL.h"
37 #include "SDL_BeApp.h"
38 #include "SDL_BWin.h"
39 #include "SDL_timer.h"
40 #include "blank_cursor.h"
41
42 extern "C" {
43
44 #include "SDL_sysvideo.h"
45 #include "SDL_sysmouse_c.h"
46 #include "SDL_sysevents_c.h"
47 #include "SDL_events_c.h"
48 #include "SDL_syswm_c.h"
49 #include "SDL_lowvideo.h"
50
51 #define BEOS_HIDDEN_SIZE 32 /* starting hidden window size */
52
53 /* Initialization/Query functions */
54 static int BE_VideoInit(_THIS, SDL_PixelFormat *vformat);
55 static SDL_Rect **BE_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
56 static SDL_Surface *BE_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
57 static void BE_UpdateMouse(_THIS);
58 static int BE_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
59 static void BE_VideoQuit(_THIS);
60
61 /* Hardware surface functions */
62 static int BE_AllocHWSurface(_THIS, SDL_Surface *surface);
63 static int BE_LockHWSurface(_THIS, SDL_Surface *surface);
64 static void BE_UnlockHWSurface(_THIS, SDL_Surface *surface);
65 static void BE_FreeHWSurface(_THIS, SDL_Surface *surface);
66
67 static int BE_ToggleFullScreen(_THIS, int fullscreen);
68
69 /* OpenGL functions */
70 #ifdef HAVE_OPENGL
71 static void BE_GL_SwapBuffers(_THIS);
72 #endif
73
74 /* FB driver bootstrap functions */
75
76 static int BE_Available(void)
77 {
78 return(1);
79 }
80
81 static void BE_DeleteDevice(SDL_VideoDevice *device)
82 {
83 free(device->hidden);
84 free(device);
85 }
86
87 static SDL_VideoDevice *BE_CreateDevice(int devindex)
88 {
89 SDL_VideoDevice *device;
90
91 /* Initialize all variables that we clean on shutdown */
92 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
93 if ( device ) {
94 memset(device, 0, (sizeof *device));
95 device->hidden = (struct SDL_PrivateVideoData *)
96 malloc((sizeof *device->hidden));
97 }
98 if ( (device == NULL) || (device->hidden == NULL) ) {
99 SDL_OutOfMemory();
100 if ( device ) {
101 free(device);
102 }
103 return(0);
104 }
105 memset(device->hidden, 0, (sizeof *device->hidden));
106
107 /* Set the function pointers */
108 device->VideoInit = BE_VideoInit;
109 device->ListModes = BE_ListModes;
110 device->SetVideoMode = BE_SetVideoMode;
111 device->UpdateMouse = BE_UpdateMouse;
112 device->SetColors = BE_SetColors;
113 device->UpdateRects = NULL;
114 device->VideoQuit = BE_VideoQuit;
115 device->AllocHWSurface = BE_AllocHWSurface;
116 device->CheckHWBlit = NULL;
117 device->FillHWRect = NULL;
118 device->SetHWColorKey = NULL;
119 device->SetHWAlpha = NULL;
120 device->LockHWSurface = BE_LockHWSurface;
121 device->UnlockHWSurface = BE_UnlockHWSurface;
122 device->FlipHWSurface = NULL;
123 device->FreeHWSurface = BE_FreeHWSurface;
124 #ifdef HAVE_OPENGL
125 device->GL_SwapBuffers = BE_GL_SwapBuffers;
126 #endif
127 device->SetIcon = NULL;
128 device->SetCaption = BE_SetWMCaption;
129 device->GetWMInfo = NULL;
130 device->FreeWMCursor = BE_FreeWMCursor;
131 device->CreateWMCursor = BE_CreateWMCursor;
132 device->ShowWMCursor = BE_ShowWMCursor;
133 device->WarpWMCursor = BE_WarpWMCursor;
134 device->InitOSKeymap = BE_InitOSKeymap;
135 device->PumpEvents = BE_PumpEvents;
136
137 device->free = BE_DeleteDevice;
138 device->ToggleFullScreen = BE_ToggleFullScreen;
139
140 /* Set the driver flags */
141 device->handles_any_size = 1;
142
143 return device;
144 }
145
146 VideoBootStrap BWINDOW_bootstrap = {
147 "bwindow", "BDirectWindow graphics",
148 BE_Available, BE_CreateDevice
149 };
150
151 static inline int ColorSpaceToBitsPerPixel(uint32 colorspace)
152 {
153 int bitsperpixel;
154
155 bitsperpixel = 0;
156 switch (colorspace) {
157 case B_CMAP8:
158 bitsperpixel = 8;
159 break;
160 case B_RGB15:
161 case B_RGBA15:
162 case B_RGB15_BIG:
163 case B_RGBA15_BIG:
164 bitsperpixel = 15;
165 break;
166 case B_RGB16:
167 case B_RGB16_BIG:
168 bitsperpixel = 16;
169 break;
170 case B_RGB32:
171 case B_RGBA32:
172 case B_RGB32_BIG:
173 case B_RGBA32_BIG:
174 bitsperpixel = 32;
175 break;
176 default:
177 break;
178 }
179 return(bitsperpixel);
180 }
181
182 /* Function to sort the display_list in bscreen */
183 static int CompareModes(const void *A, const void *B)
184 {
185 const display_mode *a = (display_mode *)A;
186 const display_mode *b = (display_mode *)B;
187
188 if ( a->space == b->space ) {
189 return((b->virtual_width*b->virtual_height)-
190 (a->virtual_width*a->virtual_height));
191 } else {
192 return(ColorSpaceToBitsPerPixel(b->space)-
193 ColorSpaceToBitsPerPixel(a->space));
194 }
195 }
196
197 /* Yes, this isn't the fastest it could be, but it works nicely */
198 static int BE_AddMode(_THIS, int index, unsigned int w, unsigned int h)
199 {
200 SDL_Rect *mode;
201 int i;
202 int next_mode;
203
204 /* Check to see if we already have this mode */
205 if ( SDL_nummodes[index] > 0 ) {
206 for ( i=SDL_nummodes[index]-1; i >= 0; --i ) {
207 mode = SDL_modelist[index][i];
208 if ( (mode->w == w) && (mode->h == h) ) {
209 #ifdef BWINDOW_DEBUG
210 fprintf(stderr, "We already have mode %dx%d at %d bytes per pixel\n", w, h, index+1);
211 #endif
212 return(0);
213 }
214 }
215 }
216
217 /* Set up the new video mode rectangle */
218 mode = (SDL_Rect *)malloc(sizeof *mode);
219 if ( mode == NULL ) {
220 SDL_OutOfMemory();
221 return(-1);
222 }
223 mode->x = 0;
224 mode->y = 0;
225 mode->w = w;
226 mode->h = h;
227 #ifdef BWINDOW_DEBUG
228 fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h, index+1);
229 #endif
230
231 /* Allocate the new list of modes, and fill in the new mode */
232 next_mode = SDL_nummodes[index];
233 SDL_modelist[index] = (SDL_Rect **)
234 realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
235 if ( SDL_modelist[index] == NULL ) {
236 SDL_OutOfMemory();
237 SDL_nummodes[index] = 0;
238 free(mode);
239 return(-1);
240 }
241 SDL_modelist[index][next_mode] = mode;
242 SDL_modelist[index][next_mode+1] = NULL;
243 SDL_nummodes[index]++;
244
245 return(0);
246 }
247
248 int BE_VideoInit(_THIS, SDL_PixelFormat *vformat)
249 {
250 display_mode *modes;
251 uint32 i, nmodes;
252 int bpp;
253 BRect bounds;
254
255 /* Initialize the Be Application for appserver interaction */
256 if ( SDL_InitBeApp() < 0 ) {
257 return(-1);
258 }
259
260 /* It is important that this be created after SDL_InitBeApp() */
261 BScreen bscreen;
262
263 /* Save the current display mode */
264 bscreen.GetMode(&saved_mode);
265
266 /* Determine the screen depth */
267 vformat->BitsPerPixel = ColorSpaceToBitsPerPixel(bscreen.ColorSpace());
268 if ( vformat->BitsPerPixel == 0 ) {
269 SDL_SetError("Unknown BScreen colorspace: 0x%x",
270 bscreen.ColorSpace());
271 return(-1);
272 }
273
274 /* Get the video modes we can switch to in fullscreen mode */
275 bscreen.GetModeList(&modes, &nmodes);
276 qsort(modes, nmodes, sizeof *modes, CompareModes);
277 for ( i=0; i<nmodes; ++i ) {
278 bpp = ColorSpaceToBitsPerPixel(modes[i].space);
279 //if ( bpp != 0 ) { // There are bugs in changing colorspace
280 if ( modes[i].space == saved_mode.space ) {
281 BE_AddMode(_this, ((bpp+7)/8)-1,
282 modes[i].virtual_width,
283 modes[i].virtual_height);
284 }
285 }
286
287 /* Create the window and view */
288 bounds.top = 0; bounds.left = 0;
289 bounds.right = BEOS_HIDDEN_SIZE;
290 bounds.bottom = BEOS_HIDDEN_SIZE;
291 SDL_Win = new SDL_BWin(bounds);
292
293 /* Create the clear cursor */
294 SDL_BlankCursor = BE_CreateWMCursor(_this, blank_cdata, blank_cmask,
295 BLANK_CWIDTH, BLANK_CHEIGHT, BLANK_CHOTX, BLANK_CHOTY);
296
297 /* Fill in some window manager capabilities */
298 _this->info.wm_available = 1;
299
300 /* We're done! */
301 return(0);
302 }
303
304 /* We support any dimension at our bit-depth */
305 SDL_Rect **BE_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
306 {
307 SDL_Rect **modes;
308
309 modes = ((SDL_Rect **)0);
310 if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
311 modes = SDL_modelist[((format->BitsPerPixel+7)/8)-1];
312 } else {
313 if ( format->BitsPerPixel ==
314 _this->screen->format->BitsPerPixel ) {
315 modes = ((SDL_Rect **)-1);
316 }
317 }
318 return(modes);
319 }
320
321 /* Various screen update functions available */
322 static void BE_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
323
324
325 /* Find the closest display mode for fullscreen */
326 static bool BE_FindClosestFSMode(_THIS, int width, int height, int bpp,
327 display_mode *mode)
328 {
329 BScreen bscreen;
330 uint32 i, nmodes;
331 SDL_Rect **modes;
332 display_mode *dmodes;
333
334 modes = SDL_modelist[((bpp+7)/8)-1];
335 for ( i=0; modes[i] && (modes[i]->w > width) &&
336 (modes[i]->h > height); ++i ) {
337 /* still looking */
338 }
339 if ( ! modes[i] || (modes[i]->w < width) || (modes[i]->h < width) ) {
340 --i; /* We went too far */
341 }
342 width = modes[i]->w;
343 height = modes[i]->h;
344 bscreen.GetModeList(&dmodes, &nmodes);
345 for ( i = 0; i < nmodes; ++i ) {
346 if ( (bpp == ColorSpaceToBitsPerPixel(dmodes[i].space)) &&
347 (width == dmodes[i].virtual_width) &&
348 (height == dmodes[i].virtual_height) ) {
349 break;
350 }
351 }
352 if ( i != nmodes ) {
353 *mode = dmodes[i];
354 return true;
355 } else {
356 return false;
357 }
358 }
359
360 static int BE_ToggleFullScreen(_THIS, int fullscreen)
361 {
362 bool needs_unlock, is_fullscreen;
363 BScreen bscreen;
364 BRect bounds;
365 display_mode mode;
366 int width, height, bpp;
367
368 SDL_Win->SetFullScreen(fullscreen);
369 is_fullscreen = SDL_Win->IsFullScreen();
370
371 if(!((is_fullscreen && fullscreen) ||
372 (!is_fullscreen && !fullscreen))) {
373 /* Modeswitch failed */
374 return 0;
375 }
376
377 if(is_fullscreen) _this->screen->flags |= SDL_FULLSCREEN;
378 else _this->screen->flags &= ~SDL_FULLSCREEN;
379
380 width = _this->screen->w;
381 height = _this->screen->h;
382
383 /* Set the appropriate video mode */
384 if ( fullscreen ) {
385 bpp = _this->screen->format->BitsPerPixel;
386 bscreen.GetMode(&mode);
387 if ( (bpp != ColorSpaceToBitsPerPixel(mode.space)) ||
388 (width != mode.virtual_width) ||
389 (height != mode.virtual_height)) {
390 if(BE_FindClosestFSMode(_this, width, height, bpp, &mode)) {
391 bscreen.SetMode(&mode);
392 /* This simply stops the next resize event from being
393 * sent to the SDL handler.
394 */
395 SDL_Win->InhibitResize();
396 } else {
397 _this->screen->flags &= ~SDL_FULLSCREEN;
398 }
399 }
400
401 } else {
402 bscreen.SetMode(&saved_mode);
403 }
404
405 if ( SDL_Win->Lock() ) {
406 int xoff, yoff;
407 if ( SDL_Win->Shown() ) {
408 needs_unlock = 1;
409 SDL_Win->Hide();
410 } else {
411 needs_unlock = 0;
412 }
413 /* This resizes the window and view area, but inhibits resizing of
414 * the BBitmap due to the InhibitResize call above. Thus the bitmap
415 * (pixel data) never changes.
416 */
417 SDL_Win->ResizeTo(width, height);
418 bounds = bscreen.Frame();
419 /* Calculate offsets - used either to center window (windowed mode)
420 * or to set drawing offsets (fullscreen mode)
421 */
422 xoff = (bounds.IntegerWidth() - _this->screen->w)/2;
423 yoff = (bounds.IntegerHeight() - _this->screen->h)/2;
424 if(fullscreen) {
425 /* Set offset for drawing */
426 SDL_Win->SetXYOffset(xoff, yoff);
427 } else {
428 /* Center window and reset the drawing offset */
429 SDL_Win->MoveTo(xoff > 0 ? (float)xoff : 0.0,
430 yoff > 0 ? (float)yoff : 0.0);
431 SDL_Win->SetXYOffset(0, 0);
432 }
433 SDL_Win->Show();
434
435 /* Unlock the window manually after the first Show() */
436 if ( needs_unlock ) { SDL_Win->Unlock(); }
437 }
438 return(1);
439 }
440
441 /* FIXME: check return values and cleanup here */
442 SDL_Surface *BE_SetVideoMode(_THIS, SDL_Surface *current,
443 int width, int height, int bpp, Uint32 flags)
444 {
445 BScreen bscreen;
446 display_mode mode;
447 BBitmap *bbitmap;
448 BRect bounds;
449 int needs_unlock;
450 int xoff = 0, yoff = 0;
451
452 /* Set the appropriate video mode */
453 if ( flags & SDL_FULLSCREEN ) {
454 bscreen.GetMode(&mode);
455 if ( (bpp != ColorSpaceToBitsPerPixel(mode.space)) ||
456 (width != mode.virtual_width) ||
457 (height != mode.virtual_height) ) {
458 if(BE_FindClosestFSMode(_this, width, height, bpp, &mode)) {
459 bscreen.SetMode(&mode);
460 xoff = (mode.virtual_width - width)/2;
461 yoff = (mode.virtual_height - height)/2;
462 } else {
463 flags &= ~SDL_FULLSCREEN;
464 }
465 }
466 } else {
467 if ( current->flags & SDL_FULLSCREEN ) {
468 bscreen.SetMode(&saved_mode);
469 }
470 }
471
472 /* Create the view for this window */
473 if ( SDL_Win->CreateView(flags) < 0 ) {
474 return(NULL);
475 }
476
477 /* Set offsets */
478 SDL_Win->SetXYOffset(xoff, yoff);
479
480 current->flags = 0; /* Clear flags */
481 current->w = width;
482 current->h = height;
483 if ( flags & SDL_FULLSCREEN ) {
484 SDL_Win->SetFullScreen(1);
485 current->flags |= SDL_FULLSCREEN;
486 } else {
487 SDL_Win->SetFullScreen(0);
488 }
489 SDL_Win->SetType(B_TITLED_WINDOW);
490 if ( flags & SDL_NOFRAME ) {
491 current->flags |= SDL_NOFRAME;
492 SDL_Win->SetLook(B_NO_BORDER_WINDOW_LOOK);
493 } else {
494 if ( (flags & SDL_RESIZABLE) && !(flags & SDL_OPENGL) ) {
495 current->flags |= SDL_RESIZABLE;
496 /* We don't want opaque resizing (TM). :-) */
497 SDL_Win->SetFlags(B_OUTLINE_RESIZE);
498 } else {
499 SDL_Win->SetFlags(B_NOT_RESIZABLE|B_NOT_ZOOMABLE);
500 }
501 }
502
503 if ( flags & SDL_OPENGL ) {
504 current->flags |= SDL_OPENGL;
505 current->pitch = 0;
506 current->pixels = NULL;
507 _this->UpdateRects = NULL;
508 // _this->ToggleFullScreen = NULL;
509 } else {
510 /* Create the BBitmap framebuffer */
511 bounds.top = 0; bounds.left = 0;
512 bounds.right = width-1;
513 bounds.bottom = height-1;
514 bbitmap = new BBitmap(bounds, bscreen.ColorSpace());
515 if ( ! bbitmap->IsValid() ) {
516 SDL_SetError("Couldn't create screen bitmap");
517 delete bbitmap;
518 return(NULL);
519 }
520 current->pitch = bbitmap->BytesPerRow();
521 current->pixels = (void *)bbitmap->Bits();
522 SDL_Win->SetBitmap(bbitmap);
523 _this->UpdateRects = BE_NormalUpdate;
524 }
525
526 /* Hide the window for resizing */
527 if ( SDL_Win->Lock() ) {
528 if ( SDL_Win->Shown() ) {
529 needs_unlock = 1;
530 SDL_Win->Hide();
531 } else {
532 needs_unlock = 0;
533 }
534
535 /* Resize, but only if the window is different size than
536 * before. Otherwise it jumps funnily when the user resizes.
537 */
538 bounds = SDL_Win->Bounds();
539 if((int)bounds.Width() != width ||
540 (int)bounds.Height() != height) {
541 SDL_Win->ResizeTo(width, height);
542 bounds = bscreen.Frame();
543 SDL_Win->MoveTo((bounds.Width()-width)/2,
544 (bounds.Height()-height)/2);
545 }
546 SDL_Win->Show();
547
548 /* Unlock the window manually after the first Show() */
549 if ( needs_unlock ) {
550 SDL_Win->Unlock();
551 }
552 }
553
554 /* We're done */
555 return(current);
556 }
557
558 /* Update the current mouse state and position */
559 void BE_UpdateMouse(_THIS)
560 {
561 BPoint point;
562 uint32 buttons;
563
564 if ( SDL_Win->Lock() ) {
565 /* Get new input state, if still active */
566 if ( SDL_Win->IsActive() ) {
567 (SDL_Win->View())->GetMouse(&point, &buttons, true);
568 } else {
569 point.x = -1;
570 point.y = -1;
571 }
572 SDL_Win->Unlock();
573
574 if ( (point.x >= 0) && (point.x < SDL_VideoSurface->w) &&
575 (point.y >= 0) && (point.y < SDL_VideoSurface->h) ) {
576 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
577 SDL_PrivateMouseMotion(0, 0,
578 (Sint16)point.x, (Sint16)point.y);
579 } else {
580 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
581 }
582 }
583 }
584
585 /* We don't actually allow hardware surfaces other than the main one */
586 static int BE_AllocHWSurface(_THIS, SDL_Surface *surface)
587 {
588 return(-1);
589 }
590 static void BE_FreeHWSurface(_THIS, SDL_Surface *surface)
591 {
592 return;
593 }
594 static int BE_LockHWSurface(_THIS, SDL_Surface *surface)
595 {
596 return(0);
597 }
598 static void BE_UnlockHWSurface(_THIS, SDL_Surface *surface)
599 {
600 return;
601 }
602
603 static void BE_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
604 {
605 if ( SDL_Win->BeginDraw() ) {
606 int i;
607
608 for ( i=0; i<numrects; ++i ) {
609 BRect rect;
610
611 rect.top = rects[i].y;
612 rect.left = rects[i].x;
613 rect.bottom = rect.top+rects[i].h-1;
614 rect.right = rect.left+rects[i].w-1;
615 SDL_Win->DrawAsync(rect);
616 }
617 SDL_Win->EndDraw();
618 }
619 }
620
621 #ifdef HAVE_OPENGL
622 void BE_GL_SwapBuffers(_THIS)
623 {
624 SDL_Win->SwapBuffers();
625 }
626 #endif
627
628 /* Is the system palette settable? */
629 int BE_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
630 {
631 int i;
632 SDL_Palette *palette;
633 const color_map *cmap = BScreen().ColorMap();
634
635 /* Get the screen colormap */
636 palette = _this->screen->format->palette;
637 for ( i=0; i<256; ++i ) {
638 palette->colors[i].r = cmap->color_list[i].red;
639 palette->colors[i].g = cmap->color_list[i].green;
640 palette->colors[i].b = cmap->color_list[i].blue;
641 }
642 return(0);
643 }
644
645 void BE_VideoQuit(_THIS)
646 {
647 int i, j;
648
649 if ( SDL_BlankCursor != NULL ) {
650 BE_FreeWMCursor(_this, SDL_BlankCursor);
651 SDL_BlankCursor = NULL;
652 }
653 for ( i=0; i<NUM_MODELISTS; ++i ) {
654 if ( SDL_modelist[i] ) {
655 for ( j=0; SDL_modelist[i][j]; ++j ) {
656 free(SDL_modelist[i][j]);
657 }
658 free(SDL_modelist[i]);
659 SDL_modelist[i] = NULL;
660 }
661 }
662 /* Restore the original video mode */
663 if ( _this->screen ) {
664 if ( (_this->screen->flags&SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
665 BScreen bscreen;
666 bscreen.SetMode(&saved_mode);
667 }
668 _this->screen->pixels = NULL;
669 }
670 SDL_QuitBeApp();
671 }
672
673 }; /* Extern C */