Mercurial > sdl-ios-xcode
annotate src/video/SDL_cursor.c @ 1296:f418917e0b7a
Fixed crash:
#include <SDL.h>
int main(int argc, char** argv)
{
SDL_Init(SDL_INIT_EVERYTHING);
SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN);
SDL_ShowCursor(SDL_DISABLE);
SDL_Delay(1000);
SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL);
SDL_Quit();
printf("Everything okay\n");
}
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 30 Jan 2006 13:30:44 +0000 |
parents | 96ef83467667 |
children | c9b51268668f |
rev | line source |
---|---|
0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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Updated copyright information for 2004 (Happy New Year!)
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parents:
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3 Copyright (C) 1997-2004 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
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Updated the source with the correct e-mail address
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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 */ | |
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77 #ifndef IPOD |
0 | 78 SDL_cursorstate = CURSOR_VISIBLE; |
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79 #endif |
0 | 80 |
81 /* Create the default cursor */ | |
82 if ( SDL_defcursor == NULL ) { | |
83 SDL_defcursor = SDL_CreateCursor(default_cdata, default_cmask, | |
84 DEFAULT_CWIDTH, DEFAULT_CHEIGHT, | |
85 DEFAULT_CHOTX, DEFAULT_CHOTY); | |
86 SDL_SetCursor(SDL_defcursor); | |
87 } | |
88 | |
89 /* Create a lock if necessary */ | |
90 if ( multithreaded ) { | |
91 SDL_cursorlock = SDL_CreateMutex(); | |
92 } | |
93 | |
94 /* That's it! */ | |
95 return(0); | |
96 } | |
97 | |
98 /* Multi-thread support for cursors */ | |
99 #ifndef SDL_LockCursor | |
100 void SDL_LockCursor(void) | |
101 { | |
102 if ( SDL_cursorlock ) { | |
103 SDL_mutexP(SDL_cursorlock); | |
104 } | |
105 } | |
106 #endif | |
107 #ifndef SDL_UnlockCursor | |
108 void SDL_UnlockCursor(void) | |
109 { | |
110 if ( SDL_cursorlock ) { | |
111 SDL_mutexV(SDL_cursorlock); | |
112 } | |
113 } | |
114 #endif | |
115 | |
116 /* Software cursor drawing support */ | |
117 SDL_Cursor * SDL_CreateCursor (Uint8 *data, Uint8 *mask, | |
118 int w, int h, int hot_x, int hot_y) | |
119 { | |
120 SDL_VideoDevice *video = current_video; | |
121 int savelen; | |
122 int i; | |
123 SDL_Cursor *cursor; | |
124 | |
125 /* Make sure the width is a multiple of 8 */ | |
126 w = ((w+7)&~7); | |
127 | |
128 /* Sanity check the hot spot */ | |
129 if ( (hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h) ) { | |
130 SDL_SetError("Cursor hot spot doesn't lie within cursor"); | |
131 return(NULL); | |
132 } | |
133 | |
134 /* Allocate memory for the cursor */ | |
135 cursor = (SDL_Cursor *)malloc(sizeof *cursor); | |
136 if ( cursor == NULL ) { | |
137 SDL_OutOfMemory(); | |
138 return(NULL); | |
139 } | |
140 savelen = (w*4)*h; | |
141 cursor->area.x = 0; | |
142 cursor->area.y = 0; | |
143 cursor->area.w = w; | |
144 cursor->area.h = h; | |
145 cursor->hot_x = hot_x; | |
146 cursor->hot_y = hot_y; | |
147 cursor->data = (Uint8 *)malloc((w/8)*h*2); | |
148 cursor->mask = cursor->data+((w/8)*h); | |
149 cursor->save[0] = (Uint8 *)malloc(savelen*2); | |
150 cursor->save[1] = cursor->save[0] + savelen; | |
151 cursor->wm_cursor = NULL; | |
152 if ( ! cursor->data || ! cursor->save[0] ) { | |
153 SDL_FreeCursor(cursor); | |
154 SDL_OutOfMemory(); | |
155 return(NULL); | |
156 } | |
157 for ( i=((w/8)*h)-1; i>=0; --i ) { | |
158 cursor->data[i] = data[i]; | |
159 cursor->mask[i] = mask[i] | data[i]; | |
160 } | |
161 memset(cursor->save[0], 0, savelen*2); | |
162 | |
163 /* If the window manager gives us a good cursor, we're done! */ | |
164 if ( video->CreateWMCursor ) { | |
165 cursor->wm_cursor = video->CreateWMCursor(video, data, mask, | |
166 w, h, hot_x, hot_y); | |
167 } else { | |
168 cursor->wm_cursor = NULL; | |
169 } | |
170 return(cursor); | |
171 } | |
172 | |
173 /* SDL_SetCursor(NULL) can be used to force the cursor redraw, | |
174 if this is desired for any reason. This is used when setting | |
175 the video mode and when the SDL window gains the mouse focus. | |
176 */ | |
177 void SDL_SetCursor (SDL_Cursor *cursor) | |
178 { | |
179 SDL_VideoDevice *video = current_video; | |
180 SDL_VideoDevice *this = current_video; | |
181 | |
182 /* Make sure that the video subsystem has been initialized */ | |
183 if ( ! video ) { | |
184 return; | |
185 } | |
186 | |
187 /* Prevent the event thread from moving the mouse */ | |
188 SDL_LockCursor(); | |
189 | |
190 /* Set the new cursor */ | |
191 if ( cursor && (cursor != SDL_cursor) ) { | |
192 /* Erase the current mouse position */ | |
193 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
194 SDL_EraseCursor(SDL_VideoSurface); | |
195 } else if ( video->MoveWMCursor ) { | |
196 /* If the video driver is moving the cursor directly, | |
197 it needs to hide the old cursor before (possibly) | |
198 showing the new one. (But don't erase NULL cursor) | |
199 */ | |
200 if ( SDL_cursor ) { | |
201 video->ShowWMCursor(this, NULL); | |
202 } | |
203 } | |
204 SDL_cursor = cursor; | |
205 } | |
206 | |
207 /* Draw the new mouse cursor */ | |
208 if ( SDL_cursor && (SDL_cursorstate&CURSOR_VISIBLE) ) { | |
209 /* Use window manager cursor if possible */ | |
210 if ( SDL_cursor->wm_cursor && | |
1296 | 211 video->ShowWMCursor(this, SDL_cursor->wm_cursor) ) { |
0 | 212 SDL_cursorstate &= ~CURSOR_USINGSW; |
1296 | 213 } else { |
0 | 214 SDL_cursorstate |= CURSOR_USINGSW; |
215 if ( video->ShowWMCursor ) { | |
216 video->ShowWMCursor(this, NULL); | |
217 } | |
218 { int x, y; | |
219 SDL_GetMouseState(&x, &y); | |
220 SDL_cursor->area.x = (x - SDL_cursor->hot_x); | |
221 SDL_cursor->area.y = (y - SDL_cursor->hot_y); | |
222 } | |
223 SDL_DrawCursor(SDL_VideoSurface); | |
224 } | |
225 } else { | |
226 /* Erase window manager mouse (cursor not visible) */ | |
227 if ( SDL_cursor && (SDL_cursorstate & CURSOR_USINGSW) ) { | |
228 SDL_EraseCursor(SDL_VideoSurface); | |
229 } else { | |
230 if ( video ) { | |
231 video->ShowWMCursor(this, NULL); | |
232 } | |
233 } | |
234 } | |
235 SDL_UnlockCursor(); | |
236 } | |
237 | |
238 SDL_Cursor * SDL_GetCursor (void) | |
239 { | |
240 return(SDL_cursor); | |
241 } | |
242 | |
243 void SDL_FreeCursor (SDL_Cursor *cursor) | |
244 { | |
245 if ( cursor ) { | |
246 if ( cursor == SDL_cursor ) { | |
247 SDL_SetCursor(SDL_defcursor); | |
248 } | |
249 if ( cursor != SDL_defcursor ) { | |
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Don't crash if freeing a cursor after quit...
Sam Lantinga <slouken@lokigames.com>
parents:
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changeset
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250 SDL_VideoDevice *video = current_video; |
1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
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parents:
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251 SDL_VideoDevice *this = current_video; |
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Don't crash if freeing a cursor after quit...
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parents:
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252 |
0 | 253 if ( cursor->data ) { |
254 free(cursor->data); | |
255 } | |
256 if ( cursor->save[0] ) { | |
257 free(cursor->save[0]); | |
258 } | |
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259 if ( video && cursor->wm_cursor ) { |
0 | 260 video->FreeWMCursor(this, cursor->wm_cursor); |
261 } | |
262 free(cursor); | |
263 } | |
264 } | |
265 } | |
266 | |
267 int SDL_ShowCursor (int toggle) | |
268 { | |
269 int showing; | |
270 | |
271 showing = (SDL_cursorstate & CURSOR_VISIBLE); | |
272 if ( toggle >= 0 ) { | |
273 SDL_LockCursor(); | |
274 if ( toggle ) { | |
275 SDL_cursorstate |= CURSOR_VISIBLE; | |
276 } else { | |
277 SDL_cursorstate &= ~CURSOR_VISIBLE; | |
278 } | |
279 SDL_UnlockCursor(); | |
280 if ( (SDL_cursorstate & CURSOR_VISIBLE) != showing ) { | |
281 SDL_VideoDevice *video = current_video; | |
282 SDL_VideoDevice *this = current_video; | |
283 | |
284 SDL_SetCursor(NULL); | |
285 if ( video && video->CheckMouseMode ) { | |
286 video->CheckMouseMode(this); | |
287 } | |
288 } | |
289 } else { | |
290 /* Query current state */ ; | |
291 } | |
292 return(showing ? 1 : 0); | |
293 } | |
294 | |
295 void SDL_WarpMouse (Uint16 x, Uint16 y) | |
296 { | |
297 SDL_VideoDevice *video = current_video; | |
298 SDL_VideoDevice *this = current_video; | |
299 | |
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300 if ( !video || !SDL_PublicSurface ) { |
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301 SDL_SetError("A video mode must be set before warping mouse"); |
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302 return; |
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Don't warp the mouse when a video mode hasn't been set
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parents:
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303 } |
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Don't warp the mouse when a video mode hasn't been set
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304 |
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305 /* If we have an offset video mode, offset the mouse coordinates */ |
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306 if (this->screen->pitch == 0) { |
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307 x += this->screen->offset / this->screen->format->BytesPerPixel; |
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308 y += this->screen->offset; |
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Prevent division-by-zero in WarpMouse if surface's pitch is zero (a GL surface?).
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parents:
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309 } else { |
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parents:
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310 x += (this->screen->offset % this->screen->pitch) / |
96ef83467667
Prevent division-by-zero in WarpMouse if surface's pitch is zero (a GL surface?).
Ryan C. Gordon <icculus@icculus.org>
parents:
1140
diff
changeset
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311 this->screen->format->BytesPerPixel; |
96ef83467667
Prevent division-by-zero in WarpMouse if surface's pitch is zero (a GL surface?).
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parents:
1140
diff
changeset
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312 y += (this->screen->offset / this->screen->pitch); |
96ef83467667
Prevent division-by-zero in WarpMouse if surface's pitch is zero (a GL surface?).
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parents:
1140
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313 } |
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314 |
0 | 315 /* This generates a mouse motion event */ |
316 if ( video->WarpWMCursor ) { | |
317 video->WarpWMCursor(this, x, y); | |
318 } else { | |
319 SDL_PrivateMouseMotion(0, 0, x, y); | |
320 } | |
321 } | |
322 | |
323 void SDL_MoveCursor(int x, int y) | |
324 { | |
325 SDL_VideoDevice *video = current_video; | |
326 | |
327 /* Erase and update the current mouse position */ | |
328 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
329 /* Erase and redraw mouse cursor in new position */ | |
330 SDL_LockCursor(); | |
331 SDL_EraseCursor(SDL_VideoSurface); | |
332 SDL_cursor->area.x = (x - SDL_cursor->hot_x); | |
333 SDL_cursor->area.y = (y - SDL_cursor->hot_y); | |
334 SDL_DrawCursor(SDL_VideoSurface); | |
335 SDL_UnlockCursor(); | |
336 } else if ( video->MoveWMCursor ) { | |
337 video->MoveWMCursor(video, x, y); | |
338 } | |
339 } | |
340 | |
341 /* Keep track of the current cursor colors */ | |
342 static int palette_changed = 1; | |
343 static Uint32 pixels8[2]; | |
344 | |
345 void SDL_CursorPaletteChanged(void) | |
346 { | |
347 palette_changed = 1; | |
348 } | |
349 | |
350 void SDL_MouseRect(SDL_Rect *area) | |
351 { | |
352 int clip_diff; | |
353 | |
354 *area = SDL_cursor->area; | |
355 if ( area->x < 0 ) { | |
356 area->w += area->x; | |
357 area->x = 0; | |
358 } | |
359 if ( area->y < 0 ) { | |
360 area->h += area->y; | |
361 area->y = 0; | |
362 } | |
363 clip_diff = (area->x+area->w)-SDL_VideoSurface->w; | |
364 if ( clip_diff > 0 ) { | |
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365 area->w = area->w < clip_diff ? 0 : area->w-clip_diff; |
0 | 366 } |
367 clip_diff = (area->y+area->h)-SDL_VideoSurface->h; | |
368 if ( clip_diff > 0 ) { | |
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parents:
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369 area->h = area->h < clip_diff ? 0 : area->h-clip_diff; |
0 | 370 } |
371 } | |
372 | |
373 static void SDL_DrawCursorFast(SDL_Surface *screen, SDL_Rect *area) | |
374 { | |
375 const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 }; | |
376 int i, w, h; | |
377 Uint8 *data, datab; | |
378 Uint8 *mask, maskb; | |
379 | |
380 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8; | |
381 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8; | |
382 switch (screen->format->BytesPerPixel) { | |
383 | |
384 case 1: { | |
385 Uint8 *dst; | |
386 int dstskip; | |
387 | |
388 if ( palette_changed ) { | |
389 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255); | |
390 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0); | |
391 palette_changed = 0; | |
392 } | |
393 dst = (Uint8 *)screen->pixels + | |
394 (SDL_cursor->area.y+area->y)*screen->pitch + | |
395 SDL_cursor->area.x; | |
396 dstskip = screen->pitch-area->w; | |
397 | |
398 for ( h=area->h; h; h-- ) { | |
399 for ( w=area->w/8; w; w-- ) { | |
400 maskb = *mask++; | |
401 datab = *data++; | |
402 for ( i=0; i<8; ++i ) { | |
403 if ( maskb & 0x80 ) { | |
404 *dst = pixels8[datab>>7]; | |
405 } | |
406 maskb <<= 1; | |
407 datab <<= 1; | |
408 dst++; | |
409 } | |
410 } | |
411 dst += dstskip; | |
412 } | |
413 } | |
414 break; | |
415 | |
416 case 2: { | |
417 Uint16 *dst; | |
418 int dstskip; | |
419 | |
420 dst = (Uint16 *)screen->pixels + | |
421 (SDL_cursor->area.y+area->y)*screen->pitch/2 + | |
422 SDL_cursor->area.x; | |
423 dstskip = (screen->pitch/2)-area->w; | |
424 | |
425 for ( h=area->h; h; h-- ) { | |
426 for ( w=area->w/8; w; w-- ) { | |
427 maskb = *mask++; | |
428 datab = *data++; | |
429 for ( i=0; i<8; ++i ) { | |
430 if ( maskb & 0x80 ) { | |
431 *dst = pixels[datab>>7]; | |
432 } | |
433 maskb <<= 1; | |
434 datab <<= 1; | |
435 dst++; | |
436 } | |
437 } | |
438 dst += dstskip; | |
439 } | |
440 } | |
441 break; | |
442 | |
443 case 3: { | |
444 Uint8 *dst; | |
445 int dstskip; | |
446 | |
447 dst = (Uint8 *)screen->pixels + | |
448 (SDL_cursor->area.y+area->y)*screen->pitch + | |
449 SDL_cursor->area.x*3; | |
450 dstskip = screen->pitch-area->w*3; | |
451 | |
452 for ( h=area->h; h; h-- ) { | |
453 for ( w=area->w/8; w; w-- ) { | |
454 maskb = *mask++; | |
455 datab = *data++; | |
456 for ( i=0; i<8; ++i ) { | |
457 if ( maskb & 0x80 ) { | |
458 memset(dst,pixels[datab>>7],3); | |
459 } | |
460 maskb <<= 1; | |
461 datab <<= 1; | |
462 dst += 3; | |
463 } | |
464 } | |
465 dst += dstskip; | |
466 } | |
467 } | |
468 break; | |
469 | |
470 case 4: { | |
471 Uint32 *dst; | |
472 int dstskip; | |
473 | |
474 dst = (Uint32 *)screen->pixels + | |
475 (SDL_cursor->area.y+area->y)*screen->pitch/4 + | |
476 SDL_cursor->area.x; | |
477 dstskip = (screen->pitch/4)-area->w; | |
478 | |
479 for ( h=area->h; h; h-- ) { | |
480 for ( w=area->w/8; w; w-- ) { | |
481 maskb = *mask++; | |
482 datab = *data++; | |
483 for ( i=0; i<8; ++i ) { | |
484 if ( maskb & 0x80 ) { | |
485 *dst = pixels[datab>>7]; | |
486 } | |
487 maskb <<= 1; | |
488 datab <<= 1; | |
489 dst++; | |
490 } | |
491 } | |
492 dst += dstskip; | |
493 } | |
494 } | |
495 break; | |
496 } | |
497 } | |
498 | |
499 static void SDL_DrawCursorSlow(SDL_Surface *screen, SDL_Rect *area) | |
500 { | |
501 const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 }; | |
502 int h; | |
503 int x, minx, maxx; | |
504 Uint8 *data, datab = 0; | |
505 Uint8 *mask, maskb = 0; | |
506 Uint8 *dst; | |
507 int dstbpp, dstskip; | |
508 | |
509 data = SDL_cursor->data + area->y * SDL_cursor->area.w/8; | |
510 mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8; | |
511 dstbpp = screen->format->BytesPerPixel; | |
512 dst = (Uint8 *)screen->pixels + | |
513 (SDL_cursor->area.y+area->y)*screen->pitch + | |
514 SDL_cursor->area.x*dstbpp; | |
515 dstskip = screen->pitch-SDL_cursor->area.w*dstbpp; | |
516 | |
517 minx = area->x; | |
518 maxx = area->x+area->w; | |
519 if ( screen->format->BytesPerPixel == 1 ) { | |
520 if ( palette_changed ) { | |
521 pixels8[0] = SDL_MapRGB(screen->format, 255, 255, 255); | |
522 pixels8[1] = SDL_MapRGB(screen->format, 0, 0, 0); | |
523 palette_changed = 0; | |
524 } | |
525 for ( h=area->h; h; h-- ) { | |
526 for ( x=0; x<SDL_cursor->area.w; ++x ) { | |
527 if ( (x%8) == 0 ) { | |
528 maskb = *mask++; | |
529 datab = *data++; | |
530 } | |
531 if ( (x >= minx) && (x < maxx) ) { | |
532 if ( maskb & 0x80 ) { | |
533 memset(dst, pixels8[datab>>7], dstbpp); | |
534 } | |
535 } | |
536 maskb <<= 1; | |
537 datab <<= 1; | |
538 dst += dstbpp; | |
539 } | |
540 dst += dstskip; | |
541 } | |
542 } else { | |
543 for ( h=area->h; h; h-- ) { | |
544 for ( x=0; x<SDL_cursor->area.w; ++x ) { | |
545 if ( (x%8) == 0 ) { | |
546 maskb = *mask++; | |
547 datab = *data++; | |
548 } | |
549 if ( (x >= minx) && (x < maxx) ) { | |
550 if ( maskb & 0x80 ) { | |
551 memset(dst, pixels[datab>>7], dstbpp); | |
552 } | |
553 } | |
554 maskb <<= 1; | |
555 datab <<= 1; | |
556 dst += dstbpp; | |
557 } | |
558 dst += dstskip; | |
559 } | |
560 } | |
561 } | |
562 | |
563 /* This handles the ugly work of converting the saved cursor background from | |
564 the pixel format of the shadow surface to that of the video surface. | |
565 This is only necessary when blitting from a shadow surface of a different | |
566 pixel format than the video surface, and using a software rendered cursor. | |
567 */ | |
568 static void SDL_ConvertCursorSave(SDL_Surface *screen, int w, int h) | |
569 { | |
570 SDL_BlitInfo info; | |
571 SDL_loblit RunBlit; | |
572 | |
573 /* Make sure we can steal the blit mapping */ | |
574 if ( screen->map->dst != SDL_VideoSurface ) { | |
575 return; | |
576 } | |
577 | |
578 /* Set up the blit information */ | |
579 info.s_pixels = SDL_cursor->save[1]; | |
580 info.s_width = w; | |
581 info.s_height = h; | |
582 info.s_skip = 0; | |
583 info.d_pixels = SDL_cursor->save[0]; | |
584 info.d_width = w; | |
585 info.d_height = h; | |
586 info.d_skip = 0; | |
587 info.aux_data = screen->map->sw_data->aux_data; | |
588 info.src = screen->format; | |
589 info.table = screen->map->table; | |
590 info.dst = SDL_VideoSurface->format; | |
591 RunBlit = screen->map->sw_data->blit; | |
592 | |
593 /* Run the actual software blit */ | |
594 RunBlit(&info); | |
595 } | |
596 | |
597 void SDL_DrawCursorNoLock(SDL_Surface *screen) | |
598 { | |
599 SDL_Rect area; | |
600 | |
601 /* Get the mouse rectangle, clipped to the screen */ | |
602 SDL_MouseRect(&area); | |
603 if ( (area.w == 0) || (area.h == 0) ) { | |
604 return; | |
605 } | |
606 | |
607 /* Copy mouse background */ | |
608 { int w, h, screenbpp; | |
609 Uint8 *src, *dst; | |
610 | |
611 /* Set up the copy pointers */ | |
612 screenbpp = screen->format->BytesPerPixel; | |
613 if ( (screen == SDL_VideoSurface) || | |
614 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) { | |
615 dst = SDL_cursor->save[0]; | |
616 } else { | |
617 dst = SDL_cursor->save[1]; | |
618 } | |
619 src = (Uint8 *)screen->pixels + area.y * screen->pitch + | |
620 area.x * screenbpp; | |
621 | |
622 /* Perform the copy */ | |
623 w = area.w*screenbpp; | |
624 h = area.h; | |
625 while ( h-- ) { | |
626 memcpy(dst, src, w); | |
627 dst += w; | |
628 src += screen->pitch; | |
629 } | |
630 } | |
631 | |
632 /* Draw the mouse cursor */ | |
633 area.x -= SDL_cursor->area.x; | |
634 area.y -= SDL_cursor->area.y; | |
635 if ( (area.x == 0) && (area.w == SDL_cursor->area.w) ) { | |
636 SDL_DrawCursorFast(screen, &area); | |
637 } else { | |
638 SDL_DrawCursorSlow(screen, &area); | |
639 } | |
640 } | |
641 | |
642 void SDL_DrawCursor(SDL_Surface *screen) | |
643 { | |
644 /* Lock the screen if necessary */ | |
645 if ( screen == NULL ) { | |
646 return; | |
647 } | |
648 if ( SDL_MUSTLOCK(screen) ) { | |
649 if ( SDL_LockSurface(screen) < 0 ) { | |
650 return; | |
651 } | |
652 } | |
653 | |
654 SDL_DrawCursorNoLock(screen); | |
655 | |
656 /* Unlock the screen and update if necessary */ | |
657 if ( SDL_MUSTLOCK(screen) ) { | |
658 SDL_UnlockSurface(screen); | |
659 } | |
660 if ( (screen == SDL_VideoSurface) && | |
661 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) { | |
662 SDL_VideoDevice *video = current_video; | |
663 SDL_VideoDevice *this = current_video; | |
664 SDL_Rect area; | |
665 | |
666 SDL_MouseRect(&area); | |
667 | |
668 /* This can be called before a video mode is set */ | |
669 if ( video->UpdateRects ) { | |
670 video->UpdateRects(this, 1, &area); | |
671 } | |
672 } | |
673 } | |
674 | |
675 void SDL_EraseCursorNoLock(SDL_Surface *screen) | |
676 { | |
677 SDL_Rect area; | |
678 | |
679 /* Get the mouse rectangle, clipped to the screen */ | |
680 SDL_MouseRect(&area); | |
681 if ( (area.w == 0) || (area.h == 0) ) { | |
682 return; | |
683 } | |
684 | |
685 /* Copy mouse background */ | |
686 { int w, h, screenbpp; | |
687 Uint8 *src, *dst; | |
688 | |
689 /* Set up the copy pointers */ | |
690 screenbpp = screen->format->BytesPerPixel; | |
691 if ( (screen == SDL_VideoSurface) || | |
692 FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) { | |
693 src = SDL_cursor->save[0]; | |
694 } else { | |
695 src = SDL_cursor->save[1]; | |
696 } | |
697 dst = (Uint8 *)screen->pixels + area.y * screen->pitch + | |
698 area.x * screenbpp; | |
699 | |
700 /* Perform the copy */ | |
701 w = area.w*screenbpp; | |
702 h = area.h; | |
703 while ( h-- ) { | |
704 memcpy(dst, src, w); | |
705 src += w; | |
706 dst += screen->pitch; | |
707 } | |
708 | |
709 /* Perform pixel conversion on cursor background */ | |
710 if ( src > SDL_cursor->save[1] ) { | |
711 SDL_ConvertCursorSave(screen, area.w, area.h); | |
712 } | |
713 } | |
714 } | |
715 | |
716 void SDL_EraseCursor(SDL_Surface *screen) | |
717 { | |
718 /* Lock the screen if necessary */ | |
719 if ( screen == NULL ) { | |
720 return; | |
721 } | |
722 if ( SDL_MUSTLOCK(screen) ) { | |
723 if ( SDL_LockSurface(screen) < 0 ) { | |
724 return; | |
725 } | |
726 } | |
727 | |
728 SDL_EraseCursorNoLock(screen); | |
729 | |
730 /* Unlock the screen and update if necessary */ | |
731 if ( SDL_MUSTLOCK(screen) ) { | |
732 SDL_UnlockSurface(screen); | |
733 } | |
734 if ( (screen == SDL_VideoSurface) && | |
735 ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) { | |
736 SDL_VideoDevice *video = current_video; | |
737 SDL_VideoDevice *this = current_video; | |
738 SDL_Rect area; | |
739 | |
740 SDL_MouseRect(&area); | |
1
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Sam Lantinga <slouken@lokigames.com>
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changeset
|
741 if ( video->UpdateRects ) { |
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Changes since SDL 1.2.0 release
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parents:
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changeset
|
742 video->UpdateRects(this, 1, &area); |
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Sam Lantinga <slouken@lokigames.com>
parents:
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changeset
|
743 } |
0 | 744 } |
745 } | |
746 | |
747 /* Reset the cursor on video mode change | |
748 FIXME: Keep track of all cursors, and reset them all. | |
749 */ | |
750 void SDL_ResetCursor(void) | |
751 { | |
752 int savelen; | |
753 | |
754 if ( SDL_cursor ) { | |
755 savelen = SDL_cursor->area.w*4*SDL_cursor->area.h; | |
756 SDL_cursor->area.x = 0; | |
757 SDL_cursor->area.y = 0; | |
758 memset(SDL_cursor->save[0], 0, savelen); | |
759 } | |
760 } |