Mercurial > sdl-ios-xcode
annotate src/video/SDL_cursor.c @ 297:f6ffac90895c
Updated copyright information for 2002
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 06 Mar 2002 11:23:08 +0000 |
parents | e8157fcb3114 |
children | 5c74ac147358 |
rev | line source |
---|---|
0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
0 | 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 | |
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
113
diff
changeset
|
20 slouken@libsdl.org |
0 | 21 */ |
22 | |
23 #ifdef SAVE_RCSID | |
24 static char rcsid = | |
25 "@(#) $Id$"; | |
26 #endif | |
27 | |
28 /* General cursor handling code for SDL */ | |
29 | |
30 #include <stdio.h> | |
31 #include <stdlib.h> | |
32 #include <string.h> | |
33 | |
34 #include "SDL_mutex.h" | |
35 #include "SDL_error.h" | |
36 #include "SDL_video.h" | |
37 #include "SDL_mouse.h" | |
38 #include "SDL_blit.h" | |
39 #include "SDL_events_c.h" | |
40 #include "SDL_sysvideo.h" | |
41 #include "SDL_sysevents.h" | |
42 #include "SDL_cursor_c.h" | |
43 #include "SDL_pixels_c.h" | |
44 #include "default_cursor.h" | |
45 | |
46 /* These are static for our cursor handling code */ | |
47 volatile int SDL_cursorstate = CURSOR_VISIBLE; | |
48 SDL_Cursor *SDL_cursor = NULL; | |
49 static SDL_Cursor *SDL_defcursor = NULL; | |
50 SDL_mutex *SDL_cursorlock = NULL; | |
51 | |
52 /* Public functions */ | |
53 void SDL_CursorQuit(void) | |
54 { | |
55 if ( SDL_cursor != NULL ) { | |
56 SDL_Cursor *cursor; | |
57 | |
58 SDL_cursorstate &= ~CURSOR_VISIBLE; | |
59 if ( SDL_cursor != SDL_defcursor ) { | |
60 SDL_FreeCursor(SDL_cursor); | |
61 } | |
62 SDL_cursor = NULL; | |
63 if ( SDL_defcursor != NULL ) { | |
64 cursor = SDL_defcursor; | |
65 SDL_defcursor = NULL; | |
66 SDL_FreeCursor(cursor); | |
67 } | |
68 } | |
69 if ( SDL_cursorlock != NULL ) { | |
70 SDL_DestroyMutex(SDL_cursorlock); | |
71 SDL_cursorlock = NULL; | |
72 } | |
73 } | |
74 int SDL_CursorInit(Uint32 multithreaded) | |
75 { | |
76 /* We don't have mouse focus, and the cursor isn't drawn yet */ | |
77 SDL_cursorstate = CURSOR_VISIBLE; | |
78 | |
79 /* Create the default cursor */ | |
80 if ( SDL_defcursor == NULL ) { | |
81 SDL_defcursor = SDL_CreateCursor(default_cdata, default_cmask, | |
82 DEFAULT_CWIDTH, DEFAULT_CHEIGHT, | |
83 DEFAULT_CHOTX, DEFAULT_CHOTY); | |
84 SDL_SetCursor(SDL_defcursor); | |
85 } | |
86 | |
87 /* Create a lock if necessary */ | |
88 if ( multithreaded ) { | |
89 SDL_cursorlock = SDL_CreateMutex(); | |
90 } | |
91 | |
92 /* That's it! */ | |
93 return(0); | |
94 } | |
95 | |
96 /* Multi-thread support for cursors */ | |
97 #ifndef SDL_LockCursor | |
98 void SDL_LockCursor(void) | |
99 { | |
100 if ( SDL_cursorlock ) { | |
101 SDL_mutexP(SDL_cursorlock); | |
102 } | |
103 } | |
104 #endif | |
105 #ifndef SDL_UnlockCursor | |
106 void SDL_UnlockCursor(void) | |
107 { | |
108 if ( SDL_cursorlock ) { | |
109 SDL_mutexV(SDL_cursorlock); | |
110 } | |
111 } | |
112 #endif | |
113 | |
114 /* Software cursor drawing support */ | |
115 SDL_Cursor * SDL_CreateCursor (Uint8 *data, Uint8 *mask, | |
116 int w, int h, int hot_x, int hot_y) | |
117 { | |
118 SDL_VideoDevice *video = current_video; | |
119 int savelen; | |
120 int i; | |
121 SDL_Cursor *cursor; | |
122 | |
123 /* Make sure the width is a multiple of 8 */ | |
124 w = ((w+7)&~7); | |
125 | |
126 /* Sanity check the hot spot */ | |
127 if ( (hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h) ) { | |
128 SDL_SetError("Cursor hot spot doesn't lie within cursor"); | |
129 return(NULL); | |
130 } | |
131 | |
132 /* Allocate memory for the cursor */ | |
133 cursor = (SDL_Cursor *)malloc(sizeof *cursor); | |
134 if ( cursor == NULL ) { | |
135 SDL_OutOfMemory(); | |
136 return(NULL); | |
137 } | |
138 savelen = (w*4)*h; | |
139 cursor->area.x = 0; | |
140 cursor->area.y = 0; | |
141 cursor->area.w = w; | |
142 cursor->area.h = h; | |
143 cursor->hot_x = hot_x; | |
144 cursor->hot_y = hot_y; | |
145 cursor->data = (Uint8 *)malloc((w/8)*h*2); | |
146 cursor->mask = cursor->data+((w/8)*h); | |
147 cursor->save[0] = (Uint8 *)malloc(savelen*2); | |
148 cursor->save[1] = cursor->save[0] + savelen; | |
149 cursor->wm_cursor = NULL; | |
150 if ( ! cursor->data || ! cursor->save[0] ) { | |
151 SDL_FreeCursor(cursor); | |
152 SDL_OutOfMemory(); | |
153 return(NULL); | |
154 } | |
155 for ( i=((w/8)*h)-1; i>=0; --i ) { | |
156 cursor->data[i] = data[i]; | |
157 cursor->mask[i] = mask[i] | data[i]; | |
158 } | |
159 memset(cursor->save[0], 0, savelen*2); | |
160 | |
161 /* If the window manager gives us a good cursor, we're done! */ | |
162 if ( video->CreateWMCursor ) { | |
163 cursor->wm_cursor = video->CreateWMCursor(video, data, mask, | |
164 w, h, hot_x, hot_y); | |
165 } else { | |
166 cursor->wm_cursor = NULL; | |
167 } | |
168 return(cursor); | |
169 } | |
170 | |
171 /* SDL_SetCursor(NULL) can be used to force the cursor redraw, | |
172 if this is desired for any reason. This is used when setting | |
173 the video mode and when the SDL window gains the mouse focus. | |
174 */ | |
175 void SDL_SetCursor (SDL_Cursor *cursor) | |
176 { | |
177 SDL_VideoDevice *video = current_video; | |
178 SDL_VideoDevice *this = current_video; | |
179 | |
180 /* Make sure that the video subsystem has been initialized */ | |
181 if ( ! video ) { | |
182 return; | |
183 } | |
184 | |
185 /* Prevent the event thread from moving the mouse */ | |
186 SDL_LockCursor(); | |
187 | |
188 /* Set the new cursor */ | |
189 if ( cursor && (cursor != SDL_cursor) ) { | |
190 /* Erase the current mouse position */ | |
191 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
192 SDL_EraseCursor(SDL_VideoSurface); | |
193 } else if ( video->MoveWMCursor ) { | |
194 /* If the video driver is moving the cursor directly, | |
195 it needs to hide the old cursor before (possibly) | |
196 showing the new one. (But don't erase NULL cursor) | |
197 */ | |
198 if ( SDL_cursor ) { | |
199 video->ShowWMCursor(this, NULL); | |
200 } | |
201 } | |
202 SDL_cursor = cursor; | |
203 } | |
204 | |
205 /* Draw the new mouse cursor */ | |
206 if ( SDL_cursor && (SDL_cursorstate&CURSOR_VISIBLE) ) { | |
207 /* Use window manager cursor if possible */ | |
208 if ( SDL_cursor->wm_cursor && | |
209 video->ShowWMCursor(this, SDL_cursor->wm_cursor) ) | |
210 SDL_cursorstate &= ~CURSOR_USINGSW; | |
211 else { | |
212 SDL_cursorstate |= CURSOR_USINGSW; | |
213 if ( video->ShowWMCursor ) { | |
214 video->ShowWMCursor(this, NULL); | |
215 } | |
216 { int x, y; | |
217 SDL_GetMouseState(&x, &y); | |
218 SDL_cursor->area.x = (x - SDL_cursor->hot_x); | |
219 SDL_cursor->area.y = (y - SDL_cursor->hot_y); | |
220 } | |
221 SDL_DrawCursor(SDL_VideoSurface); | |
222 } | |
223 } else { | |
224 /* Erase window manager mouse (cursor not visible) */ | |
225 if ( SDL_cursor && (SDL_cursorstate & CURSOR_USINGSW) ) { | |
226 SDL_EraseCursor(SDL_VideoSurface); | |
227 } else { | |
228 if ( video ) { | |
229 video->ShowWMCursor(this, NULL); | |
230 } | |
231 } | |
232 } | |
233 SDL_UnlockCursor(); | |
234 } | |
235 | |
236 SDL_Cursor * SDL_GetCursor (void) | |
237 { | |
238 return(SDL_cursor); | |
239 } | |
240 | |
241 void SDL_FreeCursor (SDL_Cursor *cursor) | |
242 { | |
243 if ( cursor ) { | |
244 if ( cursor == SDL_cursor ) { | |
245 SDL_SetCursor(SDL_defcursor); | |
246 } | |
247 if ( cursor != SDL_defcursor ) { | |
77
1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
Sam Lantinga <slouken@lokigames.com>
parents:
1
diff
changeset
|
248 SDL_VideoDevice *video = current_video; |
1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
Sam Lantinga <slouken@lokigames.com>
parents:
1
diff
changeset
|
249 SDL_VideoDevice *this = current_video; |
1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
Sam Lantinga <slouken@lokigames.com>
parents:
1
diff
changeset
|
250 |
0 | 251 if ( cursor->data ) { |
252 free(cursor->data); | |
253 } | |
254 if ( cursor->save[0] ) { | |
255 free(cursor->save[0]); | |
256 } | |
77
1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
Sam Lantinga <slouken@lokigames.com>
parents:
1
diff
changeset
|
257 if ( video && cursor->wm_cursor ) { |
0 | 258 video->FreeWMCursor(this, cursor->wm_cursor); |
259 } | |
260 free(cursor); | |
261 } | |
262 } | |
263 } | |
264 | |
265 int SDL_ShowCursor (int toggle) | |
266 { | |
267 int showing; | |
268 | |
269 showing = (SDL_cursorstate & CURSOR_VISIBLE); | |
270 if ( toggle >= 0 ) { | |
271 SDL_LockCursor(); | |
272 if ( toggle ) { | |
273 SDL_cursorstate |= CURSOR_VISIBLE; | |
274 } else { | |
275 SDL_cursorstate &= ~CURSOR_VISIBLE; | |
276 } | |
277 SDL_UnlockCursor(); | |
278 if ( (SDL_cursorstate & CURSOR_VISIBLE) != showing ) { | |
279 SDL_VideoDevice *video = current_video; | |
280 SDL_VideoDevice *this = current_video; | |
281 | |
282 SDL_SetCursor(NULL); | |
283 if ( video && video->CheckMouseMode ) { | |
284 video->CheckMouseMode(this); | |
285 } | |
286 } | |
287 } else { | |
288 /* Query current state */ ; | |
289 } | |
290 return(showing ? 1 : 0); | |
291 } | |
292 | |
293 void SDL_WarpMouse (Uint16 x, Uint16 y) | |
294 { | |
295 SDL_VideoDevice *video = current_video; | |
296 SDL_VideoDevice *this = current_video; | |
297 | |
298 /* This generates a mouse motion event */ | |
299 if ( video->WarpWMCursor ) { | |
300 video->WarpWMCursor(this, x, y); | |
301 } else { | |
302 x += (this->screen->offset % this->screen->pitch) / | |
303 this->screen->format->BytesPerPixel; | |
304 y += (this->screen->offset / this->screen->pitch); | |
305 SDL_PrivateMouseMotion(0, 0, x, y); | |
306 } | |
307 } | |
308 | |
309 void SDL_MoveCursor(int x, int y) | |
310 { | |
311 SDL_VideoDevice *video = current_video; | |
312 | |
313 /* Erase and update the current mouse position */ | |
314 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
315 /* Erase and redraw mouse cursor in new position */ | |
316 SDL_LockCursor(); | |
317 SDL_EraseCursor(SDL_VideoSurface); | |
318 SDL_cursor->area.x = (x - SDL_cursor->hot_x); | |
319 SDL_cursor->area.y = (y - SDL_cursor->hot_y); | |
320 SDL_DrawCursor(SDL_VideoSurface); | |
321 SDL_UnlockCursor(); | |
322 } else if ( video->MoveWMCursor ) { | |
323 video->MoveWMCursor(video, x, y); | |
324 } | |
325 } | |
326 | |
327 /* Keep track of the current cursor colors */ | |
328 static int palette_changed = 1; | |
329 static Uint32 pixels8[2]; | |
330 | |
331 void SDL_CursorPaletteChanged(void) | |
332 { | |
333 palette_changed = 1; | |
334 } | |
335 | |
336 void SDL_MouseRect(SDL_Rect *area) | |
337 { | |
338 int clip_diff; | |
339 | |
340 *area = SDL_cursor->area; | |
341 if ( area->x < 0 ) { | |
342 area->w += area->x; | |
343 area->x = 0; | |
344 } | |
345 if ( area->y < 0 ) { | |
346 area->h += area->y; | |
347 area->y = 0; | |
348 } | |
349 clip_diff = (area->x+area->w)-SDL_VideoSurface->w; | |
350 if ( clip_diff > 0 ) { | |
113
e21ac1dd30f1
Fixed crash if mouse is outside of the screen bounds for some reason
Sam Lantinga <slouken@lokigames.com>
parents:
77
diff
changeset
|
351 area->w = area->w < clip_diff ? 0 : area->w-clip_diff; |
0 | 352 } |
353 clip_diff = (area->y+area->h)-SDL_VideoSurface->h; | |
354 if ( clip_diff > 0 ) { | |
113
e21ac1dd30f1
Fixed crash if mouse is outside of the screen bounds for some reason
Sam Lantinga <slouken@lokigames.com>
parents:
77
diff
changeset
|
355 area->h = area->h < clip_diff ? 0 : area->h-clip_diff; |
0 | 356 } |
357 } | |
358 | |
359 static void SDL_DrawCursorFast(SDL_Surface *screen, SDL_Rect *area) | |
360 { | |
361 const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 }; | |
362 int i, w, h; | |
363 Uint8 *data, datab; | |
364 Uint8 *mask, maskb; | |
365 | |
366 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8; | |
367 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8; | |
368 switch (screen->format->BytesPerPixel) { | |
369 | |
370 case 1: { | |
371 Uint8 *dst; | |
372 int dstskip; | |
373 | |
374 if ( palette_changed ) { | |
375 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255); | |
376 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0); | |
377 palette_changed = 0; | |
378 } | |
379 dst = (Uint8 *)screen->pixels + | |
380 (SDL_cursor->area.y+area->y)*screen->pitch + | |
381 SDL_cursor->area.x; | |
382 dstskip = screen->pitch-area->w; | |
383 | |
384 for ( h=area->h; h; h-- ) { | |
385 for ( w=area->w/8; w; w-- ) { | |
386 maskb = *mask++; | |
387 datab = *data++; | |
388 for ( i=0; i<8; ++i ) { | |
389 if ( maskb & 0x80 ) { | |
390 *dst = pixels8[datab>>7]; | |
391 } | |
392 maskb <<= 1; | |
393 datab <<= 1; | |
394 dst++; | |
395 } | |
396 } | |
397 dst += dstskip; | |
398 } | |
399 } | |
400 break; | |
401 | |
402 case 2: { | |
403 Uint16 *dst; | |
404 int dstskip; | |
405 | |
406 dst = (Uint16 *)screen->pixels + | |
407 (SDL_cursor->area.y+area->y)*screen->pitch/2 + | |
408 SDL_cursor->area.x; | |
409 dstskip = (screen->pitch/2)-area->w; | |
410 | |
411 for ( h=area->h; h; h-- ) { | |
412 for ( w=area->w/8; w; w-- ) { | |
413 maskb = *mask++; | |
414 datab = *data++; | |
415 for ( i=0; i<8; ++i ) { | |
416 if ( maskb & 0x80 ) { | |
417 *dst = pixels[datab>>7]; | |
418 } | |
419 maskb <<= 1; | |
420 datab <<= 1; | |
421 dst++; | |
422 } | |
423 } | |
424 dst += dstskip; | |
425 } | |
426 } | |
427 break; | |
428 | |
429 case 3: { | |
430 Uint8 *dst; | |
431 int dstskip; | |
432 | |
433 dst = (Uint8 *)screen->pixels + | |
434 (SDL_cursor->area.y+area->y)*screen->pitch + | |
435 SDL_cursor->area.x*3; | |
436 dstskip = screen->pitch-area->w*3; | |
437 | |
438 for ( h=area->h; h; h-- ) { | |
439 for ( w=area->w/8; w; w-- ) { | |
440 maskb = *mask++; | |
441 datab = *data++; | |
442 for ( i=0; i<8; ++i ) { | |
443 if ( maskb & 0x80 ) { | |
444 memset(dst,pixels[datab>>7],3); | |
445 } | |
446 maskb <<= 1; | |
447 datab <<= 1; | |
448 dst += 3; | |
449 } | |
450 } | |
451 dst += dstskip; | |
452 } | |
453 } | |
454 break; | |
455 | |
456 case 4: { | |
457 Uint32 *dst; | |
458 int dstskip; | |
459 | |
460 dst = (Uint32 *)screen->pixels + | |
461 (SDL_cursor->area.y+area->y)*screen->pitch/4 + | |
462 SDL_cursor->area.x; | |
463 dstskip = (screen->pitch/4)-area->w; | |
464 | |
465 for ( h=area->h; h; h-- ) { | |
466 for ( w=area->w/8; w; w-- ) { | |
467 maskb = *mask++; | |
468 datab = *data++; | |
469 for ( i=0; i<8; ++i ) { | |
470 if ( maskb & 0x80 ) { | |
471 *dst = pixels[datab>>7]; | |
472 } | |
473 maskb <<= 1; | |
474 datab <<= 1; | |
475 dst++; | |
476 } | |
477 } | |
478 dst += dstskip; | |
479 } | |
480 } | |
481 break; | |
482 } | |
483 } | |
484 | |
485 static void SDL_DrawCursorSlow(SDL_Surface *screen, SDL_Rect *area) | |
486 { | |
487 const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 }; | |
488 int h; | |
489 int x, minx, maxx; | |
490 Uint8 *data, datab = 0; | |
491 Uint8 *mask, maskb = 0; | |
492 Uint8 *dst; | |
493 int dstbpp, dstskip; | |
494 | |
495 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8; | |
496 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8; | |
497 dstbpp = screen->format->BytesPerPixel; | |
498 dst = (Uint8 *)screen->pixels + | |
499 (SDL_cursor->area.y+area->y)*screen->pitch + | |
500 SDL_cursor->area.x*dstbpp; | |
501 dstskip = screen->pitch-SDL_cursor->area.w*dstbpp; | |
502 | |
503 minx = area->x; | |
504 maxx = area->x+area->w; | |
505 if ( screen->format->BytesPerPixel == 1 ) { | |
506 if ( palette_changed ) { | |
507 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255); | |
508 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0); | |
509 palette_changed = 0; | |
510 } | |
511 for ( h=area->h; h; h-- ) { | |
512 for ( x=0; x<SDL_cursor->area.w; ++x ) { | |
513 if ( (x%8) == 0 ) { | |
514 maskb = *mask++; | |
515 datab = *data++; | |
516 } | |
517 if ( (x >= minx) && (x < maxx) ) { | |
518 if ( maskb & 0x80 ) { | |
519 memset(dst, pixels8[datab>>7], dstbpp); | |
520 } | |
521 } | |
522 maskb <<= 1; | |
523 datab <<= 1; | |
524 dst += dstbpp; | |
525 } | |
526 dst += dstskip; | |
527 } | |
528 } else { | |
529 for ( h=area->h; h; h-- ) { | |
530 for ( x=0; x<SDL_cursor->area.w; ++x ) { | |
531 if ( (x%8) == 0 ) { | |
532 maskb = *mask++; | |
533 datab = *data++; | |
534 } | |
535 if ( (x >= minx) && (x < maxx) ) { | |
536 if ( maskb & 0x80 ) { | |
537 memset(dst, pixels[datab>>7], dstbpp); | |
538 } | |
539 } | |
540 maskb <<= 1; | |
541 datab <<= 1; | |
542 dst += dstbpp; | |
543 } | |
544 dst += dstskip; | |
545 } | |
546 } | |
547 } | |
548 | |
549 /* This handles the ugly work of converting the saved cursor background from | |
550 the pixel format of the shadow surface to that of the video surface. | |
551 This is only necessary when blitting from a shadow surface of a different | |
552 pixel format than the video surface, and using a software rendered cursor. | |
553 */ | |
554 static void SDL_ConvertCursorSave(SDL_Surface *screen, int w, int h) | |
555 { | |
556 SDL_BlitInfo info; | |
557 SDL_loblit RunBlit; | |
558 | |
559 /* Make sure we can steal the blit mapping */ | |
560 if ( screen->map->dst != SDL_VideoSurface ) { | |
561 return; | |
562 } | |
563 | |
564 /* Set up the blit information */ | |
565 info.s_pixels = SDL_cursor->save[1]; | |
566 info.s_width = w; | |
567 info.s_height = h; | |
568 info.s_skip = 0; | |
569 info.d_pixels = SDL_cursor->save[0]; | |
570 info.d_width = w; | |
571 info.d_height = h; | |
572 info.d_skip = 0; | |
573 info.aux_data = screen->map->sw_data->aux_data; | |
574 info.src = screen->format; | |
575 info.table = screen->map->table; | |
576 info.dst = SDL_VideoSurface->format; | |
577 RunBlit = screen->map->sw_data->blit; | |
578 | |
579 /* Run the actual software blit */ | |
580 RunBlit(&info); | |
581 } | |
582 | |
583 void SDL_DrawCursorNoLock(SDL_Surface *screen) | |
584 { | |
585 SDL_Rect area; | |
586 | |
587 /* Get the mouse rectangle, clipped to the screen */ | |
588 SDL_MouseRect(&area); | |
589 if ( (area.w == 0) || (area.h == 0) ) { | |
590 return; | |
591 } | |
592 | |
593 /* Copy mouse background */ | |
594 { int w, h, screenbpp; | |
595 Uint8 *src, *dst; | |
596 | |
597 /* Set up the copy pointers */ | |
598 screenbpp = screen->format->BytesPerPixel; | |
599 if ( (screen == SDL_VideoSurface) || | |
600 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) { | |
601 dst = SDL_cursor->save[0]; | |
602 } else { | |
603 dst = SDL_cursor->save[1]; | |
604 } | |
605 src = (Uint8 *)screen->pixels + area.y * screen->pitch + | |
606 area.x * screenbpp; | |
607 | |
608 /* Perform the copy */ | |
609 w = area.w*screenbpp; | |
610 h = area.h; | |
611 while ( h-- ) { | |
612 memcpy(dst, src, w); | |
613 dst += w; | |
614 src += screen->pitch; | |
615 } | |
616 } | |
617 | |
618 /* Draw the mouse cursor */ | |
619 area.x -= SDL_cursor->area.x; | |
620 area.y -= SDL_cursor->area.y; | |
621 if ( (area.x == 0) && (area.w == SDL_cursor->area.w) ) { | |
622 SDL_DrawCursorFast(screen, &area); | |
623 } else { | |
624 SDL_DrawCursorSlow(screen, &area); | |
625 } | |
626 } | |
627 | |
628 void SDL_DrawCursor(SDL_Surface *screen) | |
629 { | |
630 /* Lock the screen if necessary */ | |
631 if ( screen == NULL ) { | |
632 return; | |
633 } | |
634 if ( SDL_MUSTLOCK(screen) ) { | |
635 if ( SDL_LockSurface(screen) < 0 ) { | |
636 return; | |
637 } | |
638 } | |
639 | |
640 SDL_DrawCursorNoLock(screen); | |
641 | |
642 /* Unlock the screen and update if necessary */ | |
643 if ( SDL_MUSTLOCK(screen) ) { | |
644 SDL_UnlockSurface(screen); | |
645 } | |
646 if ( (screen == SDL_VideoSurface) && | |
647 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) { | |
648 SDL_VideoDevice *video = current_video; | |
649 SDL_VideoDevice *this = current_video; | |
650 SDL_Rect area; | |
651 | |
652 SDL_MouseRect(&area); | |
653 | |
654 /* This can be called before a video mode is set */ | |
655 if ( video->UpdateRects ) { | |
656 video->UpdateRects(this, 1, &area); | |
657 } | |
658 } | |
659 } | |
660 | |
661 void SDL_EraseCursorNoLock(SDL_Surface *screen) | |
662 { | |
663 SDL_Rect area; | |
664 | |
665 /* Get the mouse rectangle, clipped to the screen */ | |
666 SDL_MouseRect(&area); | |
667 if ( (area.w == 0) || (area.h == 0) ) { | |
668 return; | |
669 } | |
670 | |
671 /* Copy mouse background */ | |
672 { int w, h, screenbpp; | |
673 Uint8 *src, *dst; | |
674 | |
675 /* Set up the copy pointers */ | |
676 screenbpp = screen->format->BytesPerPixel; | |
677 if ( (screen == SDL_VideoSurface) || | |
678 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) { | |
679 src = SDL_cursor->save[0]; | |
680 } else { | |
681 src = SDL_cursor->save[1]; | |
682 } | |
683 dst = (Uint8 *)screen->pixels + area.y * screen->pitch + | |
684 area.x * screenbpp; | |
685 | |
686 /* Perform the copy */ | |
687 w = area.w*screenbpp; | |
688 h = area.h; | |
689 while ( h-- ) { | |
690 memcpy(dst, src, w); | |
691 src += w; | |
692 dst += screen->pitch; | |
693 } | |
694 | |
695 /* Perform pixel conversion on cursor background */ | |
696 if ( src > SDL_cursor->save[1] ) { | |
697 SDL_ConvertCursorSave(screen, area.w, area.h); | |
698 } | |
699 } | |
700 } | |
701 | |
702 void SDL_EraseCursor(SDL_Surface *screen) | |
703 { | |
704 /* Lock the screen if necessary */ | |
705 if ( screen == NULL ) { | |
706 return; | |
707 } | |
708 if ( SDL_MUSTLOCK(screen) ) { | |
709 if ( SDL_LockSurface(screen) < 0 ) { | |
710 return; | |
711 } | |
712 } | |
713 | |
714 SDL_EraseCursorNoLock(screen); | |
715 | |
716 /* Unlock the screen and update if necessary */ | |
717 if ( SDL_MUSTLOCK(screen) ) { | |
718 SDL_UnlockSurface(screen); | |
719 } | |
720 if ( (screen == SDL_VideoSurface) && | |
721 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) { | |
722 SDL_VideoDevice *video = current_video; | |
723 SDL_VideoDevice *this = current_video; | |
724 SDL_Rect area; | |
725 | |
726 SDL_MouseRect(&area); | |
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
727 if ( video->UpdateRects ) { |
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
728 video->UpdateRects(this, 1, &area); |
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
729 } |
0 | 730 } |
731 } | |
732 | |
733 /* Reset the cursor on video mode change | |
734 FIXME: Keep track of all cursors, and reset them all. | |
735 */ | |
736 void SDL_ResetCursor(void) | |
737 { | |
738 int savelen; | |
739 | |
740 if ( SDL_cursor ) { | |
741 savelen = SDL_cursor->area.w*4*SDL_cursor->area.h; | |
742 SDL_cursor->area.x = 0; | |
743 SDL_cursor->area.y = 0; | |
744 memset(SDL_cursor->save[0], 0, savelen); | |
745 } | |
746 } |