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comparison src/events/SDL_mouse.c @ 3771:8cc36a399a12 gsoc2008_manymouse

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comments added and improved code look(windows part)
author Szymon Wilczek <kazeuser@gmail.com>
date Sat, 02 Aug 2008 14:02:28 +0000
parents 81b649bad6d2
children 8b5b67000dc0
comparison
equal deleted inserted replaced
3770:81b649bad6d2 3771:8cc36a399a12
31 static int SDL_num_mice=0; 31 static int SDL_num_mice=0;
32 static int SDL_current_mouse=-1; 32 static int SDL_current_mouse=-1;
33 static SDL_Mouse **SDL_mice=NULL; 33 static SDL_Mouse **SDL_mice=NULL;
34 static int *SDL_IdIndex=NULL; 34 static int *SDL_IdIndex=NULL;
35 static int SDL_highestId=-1; 35 static int SDL_highestId=-1;
36 static int last_x, last_y; 36 static int last_x, last_y;/*the last reported x and y coordinates by the system cursor*/
37 int x_max, y_max; 37 int x_max, y_max; /*current window width and height*/
38 /* Public functions */ 38 /* Public functions */
39 int 39 int
40 SDL_MouseInit(void) 40 SDL_MouseInit(void)
41 { 41 {
42 return (0); 42 return (0);
75 if (!SDL_mice[index]) { 75 if (!SDL_mice[index]) {
76 SDL_OutOfMemory(); 76 SDL_OutOfMemory();
77 return -1; 77 return -1;
78 } 78 }
79 *SDL_mice[index] = *mouse; 79 *SDL_mice[index] = *mouse;
80
81 /*we're setting the mouse properties*/
80 length=0; 82 length=0;
81 length=SDL_strlen(name); 83 length=SDL_strlen(name);
82 SDL_mice[index]->name=SDL_malloc((length+1)*sizeof(char)); 84 SDL_mice[index]->name=SDL_malloc((length+1)*sizeof(char));
83 SDL_strlcpy(SDL_mice[index]->name,name,length); 85 SDL_strlcpy(SDL_mice[index]->name,name,length);
84 SDL_mice[index]->pressure_max=pressure_max; 86 SDL_mice[index]->pressure_max=pressure_max;
88 SDL_mice[index]->cur_cursor = NULL; 90 SDL_mice[index]->cur_cursor = NULL;
89 SDL_mice[index]->def_cursor = 91 SDL_mice[index]->def_cursor =
90 SDL_CreateCursor(default_cdata, default_cmask, DEFAULT_CWIDTH, 92 SDL_CreateCursor(default_cdata, default_cmask, DEFAULT_CWIDTH,
91 DEFAULT_CHEIGHT, DEFAULT_CHOTX, DEFAULT_CHOTY); 93 DEFAULT_CHEIGHT, DEFAULT_CHOTX, DEFAULT_CHOTY);
92 SDL_SetCursor(SDL_mice[index]->def_cursor); 94 SDL_SetCursor(SDL_mice[index]->def_cursor);
95 /*we're assuming that all mouses are in the computer sensing zone*/
93 SDL_mice[index]->proximity=SDL_TRUE; 96 SDL_mice[index]->proximity=SDL_TRUE;
97 /*we're assuming that all mouses are working in the absolute position mode
98 thanx to that, the users that don't want to use many mouses don't have to
99 worry about anything*/
94 SDL_mice[index]->relative_mode=SDL_FALSE; 100 SDL_mice[index]->relative_mode=SDL_FALSE;
95 SDL_SelectMouse(selected_mouse); 101 SDL_SelectMouse(selected_mouse);
96 102
97 return index; 103 return index;
98 } 104 }
359 int index=SDL_GetIndexById(id); 365 int index=SDL_GetIndexById(id);
360 SDL_Mouse *mouse = SDL_GetMouse(index); 366 SDL_Mouse *mouse = SDL_GetMouse(index);
361 int posted; 367 int posted;
362 int xrel; 368 int xrel;
363 int yrel; 369 int yrel;
370 /*while using the relative mode and many windows, we have to be sure,
371 that the pointers find themselves inside the windows*/
364 if(x>x_max) 372 if(x>x_max)
365 { 373 {
366 x=x_max; 374 x=x_max;
367 } 375 }
368 if(y>y_max) 376 if(y>y_max)
369 { 377 {
370 y=y_max; 378 y=y_max;
371 } 379 }
380
372 if (!mouse || mouse->flush_motion) { 381 if (!mouse || mouse->flush_motion) {
373 return 0; 382 return 0;
374 } 383 }
384
385 /*if the mouse is out of proximity we don't to want to have any motion from it*/
375 if(mouse->proximity==SDL_FALSE) 386 if(mouse->proximity==SDL_FALSE)
376 { 387 {
377 last_x=x; 388 last_x=x;
378 last_y=y; 389 last_y=y;
379 return 0; 390 return 0;
380 } 391 }
381 if (mouse->relative_mode==SDL_TRUE && mouse->proximity==SDL_TRUE) { 392
382 /* Push the cursor around */ 393 /*the relative motion is calculated regarding the system cursor last position*/
383 xrel = x - last_x; 394
384 yrel = y - last_y; 395 xrel = x - last_x;
385 } else { 396 yrel = y - last_y;
386 xrel = x - last_x;
387 yrel = y - last_y;
388 }
389 397
390 /* Drop events that don't change state */ 398 /* Drop events that don't change state */
391 if (!xrel && !yrel) { 399 if (!xrel && !yrel) {
392 #if 0 400 #if 0
393 printf("Mouse event didn't change state - dropped!\n"); 401 printf("Mouse event didn't change state - dropped!\n");
394 #endif 402 #endif
395 return 0; 403 return 0;
396 } 404 }
397 405
398 /* Update internal mouse state */ 406 /* Update internal mouse coordinates */
399 if (mouse->relative_mode==SDL_FALSE) { 407 if (mouse->relative_mode==SDL_FALSE) {
400 mouse->x = x; 408 mouse->x = x;
401 mouse->y = y; 409 mouse->y = y;
402 } 410 }
403 else 411 else