SDL  2.0
SDL_mouse.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../SDL_internal.h"
22 
23 /* General mouse handling code for SDL */
24 
25 #include "SDL_assert.h"
26 #include "SDL_hints.h"
27 #include "SDL_timer.h"
28 #include "SDL_events.h"
29 #include "SDL_events_c.h"
30 #include "default_cursor.h"
31 #include "../video/SDL_sysvideo.h"
32 
33 /* #define DEBUG_MOUSE */
34 
35 /* The mouse state */
38 static int SDL_double_click_radius = 1;
39 
40 static int
41 SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y);
42 
43 /* Public functions */
44 int
46 {
47  SDL_Mouse *mouse = SDL_GetMouse();
48 
49  mouse->cursor_shown = SDL_TRUE;
50 
51  return (0);
52 }
53 
54 void
56 {
57  SDL_Mouse *mouse = SDL_GetMouse();
58 
59  mouse->def_cursor = cursor;
60  if (!mouse->cur_cursor) {
61  SDL_SetCursor(cursor);
62  }
63 }
64 
65 SDL_Mouse *
67 {
68  return &SDL_mouse;
69 }
70 
71 void
73 {
74  SDL_double_click_time = interval;
75 }
76 
77 SDL_Window *
79 {
80  SDL_Mouse *mouse = SDL_GetMouse();
81 
82  return mouse->focus;
83 }
84 
85 void
87 {
88  SDL_Mouse *mouse = SDL_GetMouse();
89  Uint8 i;
90 
91 #ifdef DEBUG_MOUSE
92  printf("Resetting mouse\n");
93 #endif
94  for (i = 1; i <= sizeof(mouse->buttonstate)*8; ++i) {
95  if (mouse->buttonstate & SDL_BUTTON(i)) {
96  SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, i);
97  }
98  }
99  SDL_assert(mouse->buttonstate == 0);
100 }
101 
102 void
104 {
105  SDL_Mouse *mouse = SDL_GetMouse();
106 
107  if (mouse->focus == window) {
108  return;
109  }
110 
111  /* Actually, this ends up being a bad idea, because most operating
112  systems have an implicit grab when you press the mouse button down
113  so you can drag things out of the window and then get the mouse up
114  when it happens. So, #if 0...
115  */
116 #if 0
117  if (mouse->focus && !window) {
118  /* We won't get anymore mouse messages, so reset mouse state */
119  SDL_ResetMouse();
120  }
121 #endif
122 
123  /* See if the current window has lost focus */
124  if (mouse->focus) {
126  }
127 
128  mouse->focus = window;
129 
130  if (mouse->focus) {
132  }
133 
134  /* Update cursor visibility */
136 }
137 
138 /* Check to see if we need to synthesize focus events */
139 static SDL_bool
140 SDL_UpdateMouseFocus(SDL_Window * window, int x, int y, Uint32 buttonstate)
141 {
142  SDL_Mouse *mouse = SDL_GetMouse();
143  SDL_bool inWindow = SDL_TRUE;
144 
145  if (window && ((window->flags & SDL_WINDOW_MOUSE_CAPTURE) == 0)) {
146  int w, h;
147  SDL_GetWindowSize(window, &w, &h);
148  if (x < 0 || y < 0 || x >= w || y >= h) {
149  inWindow = SDL_FALSE;
150  }
151  }
152 
153 /* Linux doesn't give you mouse events outside your window unless you grab
154  the pointer.
155 
156  Windows doesn't give you mouse events outside your window unless you call
157  SetCapture().
158 
159  Both of these are slightly scary changes, so for now we'll punt and if the
160  mouse leaves the window you'll lose mouse focus and reset button state.
161 */
162 #ifdef SUPPORT_DRAG_OUTSIDE_WINDOW
163  if (!inWindow && !buttonstate) {
164 #else
165  if (!inWindow) {
166 #endif
167  if (window == mouse->focus) {
168 #ifdef DEBUG_MOUSE
169  printf("Mouse left window, synthesizing move & focus lost event\n");
170 #endif
171  SDL_PrivateSendMouseMotion(window, mouse->mouseID, 0, x, y);
173  }
174  return SDL_FALSE;
175  }
176 
177  if (window != mouse->focus) {
178 #ifdef DEBUG_MOUSE
179  printf("Mouse entered window, synthesizing focus gain & move event\n");
180 #endif
181  SDL_SetMouseFocus(window);
182  SDL_PrivateSendMouseMotion(window, mouse->mouseID, 0, x, y);
183  }
184  return SDL_TRUE;
185 }
186 
187 int
188 SDL_SendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
189 {
190  if (window && !relative) {
191  SDL_Mouse *mouse = SDL_GetMouse();
192  if (!SDL_UpdateMouseFocus(window, x, y, mouse->buttonstate)) {
193  return 0;
194  }
195  }
196 
197  return SDL_PrivateSendMouseMotion(window, mouseID, relative, x, y);
198 }
199 
200 static int
201 SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
202 {
203  SDL_Mouse *mouse = SDL_GetMouse();
204  int posted;
205  int xrel;
206  int yrel;
207 
208  if (mouse->relative_mode_warp) {
209  int center_x = 0, center_y = 0;
210  SDL_GetWindowSize(window, &center_x, &center_y);
211  center_x /= 2;
212  center_y /= 2;
213  if (x == center_x && y == center_y) {
214  mouse->last_x = center_x;
215  mouse->last_y = center_y;
216  return 0;
217  }
218  SDL_WarpMouseInWindow(window, center_x, center_y);
219  }
220 
221  if (relative) {
222  xrel = x;
223  yrel = y;
224  x = (mouse->last_x + xrel);
225  y = (mouse->last_y + yrel);
226  } else {
227  xrel = x - mouse->last_x;
228  yrel = y - mouse->last_y;
229  }
230 
231  /* Drop events that don't change state */
232  if (!xrel && !yrel) {
233 #ifdef DEBUG_MOUSE
234  printf("Mouse event didn't change state - dropped!\n");
235 #endif
236  return 0;
237  }
238 
239  /* Update internal mouse coordinates */
240  if (!mouse->relative_mode) {
241  mouse->x = x;
242  mouse->y = y;
243  } else {
244  mouse->x += xrel;
245  mouse->y += yrel;
246  }
247 
248  /* make sure that the pointers find themselves inside the windows,
249  unless we have the mouse captured. */
250  if (window && ((window->flags & SDL_WINDOW_MOUSE_CAPTURE) == 0)) {
251  int x_max = 0, y_max = 0;
252 
253  // !!! FIXME: shouldn't this be (window) instead of (mouse->focus)?
254  SDL_GetWindowSize(mouse->focus, &x_max, &y_max);
255  --x_max;
256  --y_max;
257 
258  if (mouse->x > x_max) {
259  mouse->x = x_max;
260  }
261  if (mouse->x < 0) {
262  mouse->x = 0;
263  }
264 
265  if (mouse->y > y_max) {
266  mouse->y = y_max;
267  }
268  if (mouse->y < 0) {
269  mouse->y = 0;
270  }
271  }
272 
273  mouse->xdelta += xrel;
274  mouse->ydelta += yrel;
275 
276  /* Move the mouse cursor, if needed */
277  if (mouse->cursor_shown && !mouse->relative_mode &&
278  mouse->MoveCursor && mouse->cur_cursor) {
279  mouse->MoveCursor(mouse->cur_cursor);
280  }
281 
282  /* Post the event, if desired */
283  posted = 0;
286  event.motion.type = SDL_MOUSEMOTION;
287  event.motion.windowID = mouse->focus ? mouse->focus->id : 0;
288  event.motion.which = mouseID;
289  event.motion.state = mouse->buttonstate;
290  event.motion.x = mouse->x;
291  event.motion.y = mouse->y;
292  event.motion.xrel = xrel;
293  event.motion.yrel = yrel;
294  posted = (SDL_PushEvent(&event) > 0);
295  }
296  if (relative) {
297  mouse->last_x = mouse->x;
298  mouse->last_y = mouse->y;
299  } else {
300  /* Use unclamped values if we're getting events outside the window */
301  mouse->last_x = x;
302  mouse->last_y = y;
303  }
304  return posted;
305 }
306 
308 {
309  if (button >= mouse->num_clickstates) {
310  int i, count = button + 1;
311  SDL_MouseClickState *clickstate = (SDL_MouseClickState *)SDL_realloc(mouse->clickstate, count * sizeof(*mouse->clickstate));
312  if (!clickstate) {
313  return NULL;
314  }
315  mouse->clickstate = clickstate;
316 
317  for (i = mouse->num_clickstates; i < count; ++i) {
318  SDL_zero(mouse->clickstate[i]);
319  }
320  mouse->num_clickstates = count;
321  }
322  return &mouse->clickstate[button];
323 }
324 
325 int
327 {
328  SDL_Mouse *mouse = SDL_GetMouse();
329  int posted;
330  Uint32 type;
331  Uint32 buttonstate = mouse->buttonstate;
332  SDL_MouseClickState *clickstate = GetMouseClickState(mouse, button);
333  Uint8 click_count;
334 
335  /* Figure out which event to perform */
336  switch (state) {
337  case SDL_PRESSED:
338  type = SDL_MOUSEBUTTONDOWN;
339  buttonstate |= SDL_BUTTON(button);
340  break;
341  case SDL_RELEASED:
342  type = SDL_MOUSEBUTTONUP;
343  buttonstate &= ~SDL_BUTTON(button);
344  break;
345  default:
346  /* Invalid state -- bail */
347  return 0;
348  }
349 
350  /* We do this after calculating buttonstate so button presses gain focus */
351  if (window && state == SDL_PRESSED) {
352  SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate);
353  }
354 
355  if (buttonstate == mouse->buttonstate) {
356  /* Ignore this event, no state change */
357  return 0;
358  }
359  mouse->buttonstate = buttonstate;
360 
361  if (clickstate) {
362  if (state == SDL_PRESSED) {
363  Uint32 now = SDL_GetTicks();
364 
365  if (SDL_TICKS_PASSED(now, clickstate->last_timestamp + SDL_double_click_time) ||
366  SDL_abs(mouse->x - clickstate->last_x) > SDL_double_click_radius ||
367  SDL_abs(mouse->y - clickstate->last_y) > SDL_double_click_radius) {
368  clickstate->click_count = 0;
369  }
370  clickstate->last_timestamp = now;
371  clickstate->last_x = mouse->x;
372  clickstate->last_y = mouse->y;
373  if (clickstate->click_count < 255) {
374  ++clickstate->click_count;
375  }
376  }
377  click_count = clickstate->click_count;
378  } else {
379  click_count = 1;
380  }
381 
382  /* Post the event, if desired */
383  posted = 0;
384  if (SDL_GetEventState(type) == SDL_ENABLE) {
386  event.type = type;
387  event.button.windowID = mouse->focus ? mouse->focus->id : 0;
388  event.button.which = mouseID;
389  event.button.state = state;
390  event.button.button = button;
391  event.button.clicks = click_count;
392  event.button.x = mouse->x;
393  event.button.y = mouse->y;
394  posted = (SDL_PushEvent(&event) > 0);
395  }
396 
397  /* We do this after dispatching event so button releases can lose focus */
398  if (window && state == SDL_RELEASED) {
399  SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate);
400  }
401 
402  return posted;
403 }
404 
405 int
406 SDL_SendMouseWheel(SDL_Window * window, SDL_MouseID mouseID, int x, int y, SDL_MouseWheelDirection direction)
407 {
408  SDL_Mouse *mouse = SDL_GetMouse();
409  int posted;
410 
411  if (window) {
412  SDL_SetMouseFocus(window);
413  }
414 
415  if (!x && !y) {
416  return 0;
417  }
418 
419  /* Post the event, if desired */
420  posted = 0;
423  event.type = SDL_MOUSEWHEEL;
424  event.wheel.windowID = mouse->focus ? mouse->focus->id : 0;
425  event.wheel.which = mouseID;
426  event.wheel.x = x;
427  event.wheel.y = y;
428  event.wheel.direction = (Uint32)direction;
429  posted = (SDL_PushEvent(&event) > 0);
430  }
431  return posted;
432 }
433 
434 void
436 {
437  SDL_Cursor *cursor, *next;
438  SDL_Mouse *mouse = SDL_GetMouse();
439 
440  if (mouse->CaptureMouse) {
442  }
444  SDL_ShowCursor(1);
445 
446  cursor = mouse->cursors;
447  while (cursor) {
448  next = cursor->next;
449  SDL_FreeCursor(cursor);
450  cursor = next;
451  }
452 
453  if (mouse->def_cursor && mouse->FreeCursor) {
454  mouse->FreeCursor(mouse->def_cursor);
455  }
456 
457  if (mouse->clickstate) {
458  SDL_free(mouse->clickstate);
459  }
460 
461  SDL_zerop(mouse);
462 }
463 
464 Uint32
465 SDL_GetMouseState(int *x, int *y)
466 {
467  SDL_Mouse *mouse = SDL_GetMouse();
468 
469  if (x) {
470  *x = mouse->x;
471  }
472  if (y) {
473  *y = mouse->y;
474  }
475  return mouse->buttonstate;
476 }
477 
478 Uint32
480 {
481  SDL_Mouse *mouse = SDL_GetMouse();
482 
483  if (x) {
484  *x = mouse->xdelta;
485  }
486  if (y) {
487  *y = mouse->ydelta;
488  }
489  mouse->xdelta = 0;
490  mouse->ydelta = 0;
491  return mouse->buttonstate;
492 }
493 
494 Uint32
495 SDL_GetGlobalMouseState(int *x, int *y)
496 {
497  SDL_Mouse *mouse = SDL_GetMouse();
498  int tmpx, tmpy;
499 
500  /* make sure these are never NULL for the backend implementations... */
501  if (!x) {
502  x = &tmpx;
503  }
504  if (!y) {
505  y = &tmpy;
506  }
507 
508  *x = *y = 0;
509 
510  if (!mouse->GetGlobalMouseState) {
511  SDL_assert(0 && "This should really be implemented for every target.");
512  return 0;
513  }
514 
515  return mouse->GetGlobalMouseState(x, y);
516 }
517 
518 void
519 SDL_WarpMouseInWindow(SDL_Window * window, int x, int y)
520 {
521  SDL_Mouse *mouse = SDL_GetMouse();
522 
523  if (window == NULL) {
524  window = mouse->focus;
525  }
526 
527  if (window == NULL) {
528  return;
529  }
530 
531  if (mouse->WarpMouse) {
532  mouse->WarpMouse(window, x, y);
533  } else {
534  SDL_SendMouseMotion(window, mouse->mouseID, 0, x, y);
535  }
536 }
537 
538 int
539 SDL_WarpMouseGlobal(int x, int y)
540 {
541  SDL_Mouse *mouse = SDL_GetMouse();
542 
543  if (mouse->WarpMouseGlobal) {
544  return mouse->WarpMouseGlobal(x, y);
545  }
546 
547  return SDL_Unsupported();
548 }
549 
550 static SDL_bool
552 {
553  const char *hint;
554 
555  if (!mouse->SetRelativeMouseMode) {
556  return SDL_TRUE;
557  }
558 
560  if (hint) {
561  if (*hint == '0') {
562  return SDL_FALSE;
563  } else {
564  return SDL_TRUE;
565  }
566  }
567  return SDL_FALSE;
568 }
569 
570 int
572 {
573  SDL_Mouse *mouse = SDL_GetMouse();
574  SDL_Window *focusWindow = SDL_GetKeyboardFocus();
575 
576  if (enabled == mouse->relative_mode) {
577  return 0;
578  }
579 
580  if (enabled && focusWindow) {
581  /* Center it in the focused window to prevent clicks from going through
582  * to background windows.
583  */
584  SDL_SetMouseFocus(focusWindow);
585  SDL_WarpMouseInWindow(focusWindow, focusWindow->w/2, focusWindow->h/2);
586  }
587 
588  /* Set the relative mode */
589  if (!enabled && mouse->relative_mode_warp) {
590  mouse->relative_mode_warp = SDL_FALSE;
591  } else if (enabled && ShouldUseRelativeModeWarp(mouse)) {
592  mouse->relative_mode_warp = SDL_TRUE;
593  } else if (mouse->SetRelativeMouseMode(enabled) < 0) {
594  if (enabled) {
595  /* Fall back to warp mode if native relative mode failed */
596  mouse->relative_mode_warp = SDL_TRUE;
597  }
598  }
599  mouse->relative_mode = enabled;
600 
601  if (mouse->focus) {
602  SDL_UpdateWindowGrab(mouse->focus);
603 
604  /* Put the cursor back to where the application expects it */
605  if (!enabled) {
606  SDL_WarpMouseInWindow(mouse->focus, mouse->x, mouse->y);
607  }
608  }
609 
610  /* Flush pending mouse motion - ideally we would pump events, but that's not always safe */
612 
613  /* Update cursor visibility */
615 
616  return 0;
617 }
618 
619 SDL_bool
621 {
622  SDL_Mouse *mouse = SDL_GetMouse();
623 
624  return mouse->relative_mode;
625 }
626 
627 int
629 {
630  SDL_Mouse *mouse = SDL_GetMouse();
631  SDL_Window *focusWindow;
632  SDL_bool isCaptured;
633 
634  if (!mouse->CaptureMouse) {
635  return SDL_Unsupported();
636  }
637 
638  focusWindow = SDL_GetKeyboardFocus();
639 
640  isCaptured = focusWindow && (focusWindow->flags & SDL_WINDOW_MOUSE_CAPTURE);
641  if (isCaptured == enabled) {
642  return 0; /* already done! */
643  }
644 
645  if (enabled) {
646  if (!focusWindow) {
647  return SDL_SetError("No window has focus");
648  } else if (mouse->CaptureMouse(focusWindow) == -1) {
649  return -1; /* CaptureMouse() should call SetError */
650  }
651  focusWindow->flags |= SDL_WINDOW_MOUSE_CAPTURE;
652  } else {
653  if (mouse->CaptureMouse(NULL) == -1) {
654  return -1; /* CaptureMouse() should call SetError */
655  }
656  focusWindow->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
657  }
658 
659  return 0;
660 }
661 
662 SDL_Cursor *
664  int w, int h, int hot_x, int hot_y)
665 {
666  SDL_Surface *surface;
668  int x, y;
669  Uint32 *pixel;
670  Uint8 datab = 0, maskb = 0;
671  const Uint32 black = 0xFF000000;
672  const Uint32 white = 0xFFFFFFFF;
673  const Uint32 transparent = 0x00000000;
674 
675  /* Make sure the width is a multiple of 8 */
676  w = ((w + 7) & ~7);
677 
678  /* Create the surface from a bitmap */
679  surface = SDL_CreateRGBSurface(0, w, h, 32,
680  0x00FF0000,
681  0x0000FF00,
682  0x000000FF,
683  0xFF000000);
684  if (!surface) {
685  return NULL;
686  }
687  for (y = 0; y < h; ++y) {
688  pixel = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch);
689  for (x = 0; x < w; ++x) {
690  if ((x % 8) == 0) {
691  datab = *data++;
692  maskb = *mask++;
693  }
694  if (maskb & 0x80) {
695  *pixel++ = (datab & 0x80) ? black : white;
696  } else {
697  *pixel++ = (datab & 0x80) ? black : transparent;
698  }
699  datab <<= 1;
700  maskb <<= 1;
701  }
702  }
703 
704  cursor = SDL_CreateColorCursor(surface, hot_x, hot_y);
705 
706  SDL_FreeSurface(surface);
707 
708  return cursor;
709 }
710 
711 SDL_Cursor *
712 SDL_CreateColorCursor(SDL_Surface *surface, int hot_x, int hot_y)
713 {
714  SDL_Mouse *mouse = SDL_GetMouse();
715  SDL_Surface *temp = NULL;
717 
718  if (!surface) {
719  SDL_SetError("Passed NULL cursor surface");
720  return NULL;
721  }
722 
723  if (!mouse->CreateCursor) {
724  SDL_SetError("Cursors are not currently supported");
725  return NULL;
726  }
727 
728  /* Sanity check the hot spot */
729  if ((hot_x < 0) || (hot_y < 0) ||
730  (hot_x >= surface->w) || (hot_y >= surface->h)) {
731  SDL_SetError("Cursor hot spot doesn't lie within cursor");
732  return NULL;
733  }
734 
735  if (surface->format->format != SDL_PIXELFORMAT_ARGB8888) {
737  if (!temp) {
738  return NULL;
739  }
740  surface = temp;
741  }
742 
743  cursor = mouse->CreateCursor(surface, hot_x, hot_y);
744  if (cursor) {
745  cursor->next = mouse->cursors;
746  mouse->cursors = cursor;
747  }
748 
749  SDL_FreeSurface(temp);
750 
751  return cursor;
752 }
753 
754 SDL_Cursor *
756 {
757  SDL_Mouse *mouse = SDL_GetMouse();
759 
760  if (!mouse->CreateSystemCursor) {
761  SDL_SetError("CreateSystemCursor is not currently supported");
762  return NULL;
763  }
764 
765  cursor = mouse->CreateSystemCursor(id);
766  if (cursor) {
767  cursor->next = mouse->cursors;
768  mouse->cursors = cursor;
769  }
770 
771  return cursor;
772 }
773 
774 /* SDL_SetCursor(NULL) can be used to force the cursor redraw,
775  if this is desired for any reason. This is used when setting
776  the video mode and when the SDL window gains the mouse focus.
777  */
778 void
780 {
781  SDL_Mouse *mouse = SDL_GetMouse();
782 
783  /* Set the new cursor */
784  if (cursor) {
785  /* Make sure the cursor is still valid for this mouse */
786  if (cursor != mouse->def_cursor) {
787  SDL_Cursor *found;
788  for (found = mouse->cursors; found; found = found->next) {
789  if (found == cursor) {
790  break;
791  }
792  }
793  if (!found) {
794  SDL_SetError("Cursor not associated with the current mouse");
795  return;
796  }
797  }
798  mouse->cur_cursor = cursor;
799  } else {
800  if (mouse->focus) {
801  cursor = mouse->cur_cursor;
802  } else {
803  cursor = mouse->def_cursor;
804  }
805  }
806 
807  if (cursor && mouse->cursor_shown && !mouse->relative_mode) {
808  if (mouse->ShowCursor) {
809  mouse->ShowCursor(cursor);
810  }
811  } else {
812  if (mouse->ShowCursor) {
813  mouse->ShowCursor(NULL);
814  }
815  }
816 }
817 
818 SDL_Cursor *
820 {
821  SDL_Mouse *mouse = SDL_GetMouse();
822 
823  if (!mouse) {
824  return NULL;
825  }
826  return mouse->cur_cursor;
827 }
828 
829 SDL_Cursor *
831 {
832  SDL_Mouse *mouse = SDL_GetMouse();
833 
834  if (!mouse) {
835  return NULL;
836  }
837  return mouse->def_cursor;
838 }
839 
840 void
842 {
843  SDL_Mouse *mouse = SDL_GetMouse();
844  SDL_Cursor *curr, *prev;
845 
846  if (!cursor) {
847  return;
848  }
849 
850  if (cursor == mouse->def_cursor) {
851  return;
852  }
853  if (cursor == mouse->cur_cursor) {
854  SDL_SetCursor(mouse->def_cursor);
855  }
856 
857  for (prev = NULL, curr = mouse->cursors; curr;
858  prev = curr, curr = curr->next) {
859  if (curr == cursor) {
860  if (prev) {
861  prev->next = curr->next;
862  } else {
863  mouse->cursors = curr->next;
864  }
865 
866  if (mouse->FreeCursor) {
867  mouse->FreeCursor(curr);
868  }
869  return;
870  }
871  }
872 }
873 
874 int
875 SDL_ShowCursor(int toggle)
876 {
877  SDL_Mouse *mouse = SDL_GetMouse();
878  SDL_bool shown;
879 
880  if (!mouse) {
881  return 0;
882  }
883 
884  shown = mouse->cursor_shown;
885  if (toggle >= 0) {
886  if (toggle) {
887  mouse->cursor_shown = SDL_TRUE;
888  } else {
889  mouse->cursor_shown = SDL_FALSE;
890  }
891  if (mouse->cursor_shown != shown) {
893  }
894  }
895  return shown;
896 }
897 
898 /* vi: set ts=4 sw=4 expandtab: */
void SDL_SetDoubleClickTime(Uint32 interval)
Definition: SDL_mouse.c:72
void SDL_UpdateWindowGrab(SDL_Window *window)
Definition: SDL_video.c:2227
#define SDL_abs
#define SDL_ConvertSurfaceFormat
int last_y
Definition: SDL_mouse_c.h:82
SDL_Mouse * SDL_GetMouse(void)
Definition: SDL_mouse.c:66
SDL_Cursor * SDL_GetCursor(void)
Return the active cursor.
Definition: SDL_mouse.c:819
int(* ShowCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:52
SDL_Texture * button
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
static int SDL_PrivateSendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:201
int last_x
Definition: SDL_mouse_c.h:82
SDL_Cursor * SDL_CreateColorCursor(SDL_Surface *surface, int hot_x, int hot_y)
Create a color cursor.
Definition: SDL_mouse.c:712
Uint32 buttonstate
Definition: SDL_mouse_c.h:83
SDL_bool relative_mode_warp
Definition: SDL_mouse_c.h:85
SDL_Window * focus
Definition: SDL_mouse_c.h:77
#define SDL_FlushEvent
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1564
int(* SetRelativeMouseMode)(SDL_bool enabled)
Definition: SDL_mouse_c.h:67
SDL_Window * window
struct xkb_state * state
Uint32 SDL_GetMouseState(int *x, int *y)
Retrieve the current state of the mouse.
Definition: SDL_mouse.c:465
SDL_MouseClickState * clickstate
Definition: SDL_mouse_c.h:89
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
#define SDL_GetHint
#define SDL_ENABLE
Definition: SDL_events.h:718
int num_clickstates
Definition: SDL_mouse_c.h:88
void SDL_SetCursor(SDL_Cursor *cursor)
Set the active cursor.
Definition: SDL_mouse.c:779
Uint32(* GetGlobalMouseState)(int *x, int *y)
Definition: SDL_mouse_c.h:73
int SDL_WarpMouseGlobal(int x, int y)
Moves the mouse to the given position in global screen space.
Definition: SDL_mouse.c:539
int ydelta
Definition: SDL_mouse_c.h:81
int SDL_ShowCursor(int toggle)
Toggle whether or not the cursor is shown.
Definition: SDL_mouse.c:875
int SDL_SendWindowEvent(SDL_Window *window, Uint8 windowevent, int data1, int data2)
void SDL_SetMouseFocus(SDL_Window *window)
Definition: SDL_mouse.c:103
#define SDL_GetKeyboardFocus
#define SDL_realloc
#define SDL_zerop(x)
Definition: SDL_stdinc.h:356
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
void SDL_MouseQuit(void)
Definition: SDL_mouse.c:435
SDL_Cursor * SDL_CreateCursor(const Uint8 *data, const Uint8 *mask, int w, int h, int hot_x, int hot_y)
Create a cursor, using the specified bitmap data and mask (in MSB format).
Definition: SDL_mouse.c:663
SDL_Cursor * cursors
Definition: SDL_mouse_c.h:91
SDL_MouseID mouseID
Definition: SDL_mouse_c.h:76
static int SDL_double_click_radius
Definition: SDL_mouse.c:38
int SDL_CaptureMouse(SDL_bool enabled)
Capture the mouse, to track input outside an SDL window.
Definition: SDL_mouse.c:628
Uint32 SDL_MouseID
Definition: SDL_mouse_c.h:28
void SDL_WarpMouseInWindow(SDL_Window *window, int x, int y)
Moves the mouse to the given position within the window.
Definition: SDL_mouse.c:519
int SDL_MouseInit(void)
Definition: SDL_mouse.c:45
SDL_bool
Definition: SDL_stdinc.h:126
int(* CaptureMouse)(SDL_Window *window)
Definition: SDL_mouse_c.h:70
#define SDL_GetWindowSize
static SDL_Mouse SDL_mouse
Definition: SDL_mouse.c:36
SDL_Cursor *(* CreateCursor)(SDL_Surface *surface, int hot_x, int hot_y)
Definition: SDL_mouse_c.h:46
SDL_Cursor * SDL_GetDefaultCursor(void)
Return the default cursor.
Definition: SDL_mouse.c:830
SDL_bool SDL_GetRelativeMouseMode()
Query whether relative mouse mode is enabled.
Definition: SDL_mouse.c:620
#define SDL_GetEventState(type)
Definition: SDL_events.h:731
int SDL_SendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:188
Uint32 SDL_GetTicks(void)
Get the number of milliseconds since the SDL library initialization.
void * pixels
Definition: SDL_surface.h:75
SDL_Cursor * SDL_CreateSystemCursor(SDL_SystemCursor id)
Create a system cursor.
Definition: SDL_mouse.c:755
#define SDL_FreeSurface
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:139
struct _cl_event * event
void SDL_free(void *mem)
SDL_bool cursor_shown
Definition: SDL_mouse_c.h:94
SDL_bool relative_mode
Definition: SDL_mouse_c.h:84
#define SDL_PushEvent
void SDL_ResetMouse(void)
Definition: SDL_mouse.c:86
SDL_SystemCursor
Cursor types for SDL_CreateSystemCursor.
Definition: SDL_mouse.h:46
static SDL_MouseClickState * GetMouseClickState(SDL_Mouse *mouse, Uint8 button)
Definition: SDL_mouse.c:307
#define SDL_zero(x)
Definition: SDL_stdinc.h:355
SDL_Cursor * cursor
Definition: testwm2.c:40
void SDL_SetDefaultCursor(SDL_Cursor *cursor)
Definition: SDL_mouse.c:55
static SDL_bool SDL_UpdateMouseFocus(SDL_Window *window, int x, int y, Uint32 buttonstate)
Definition: SDL_mouse.c:140
GLenum GLint GLuint mask
int(* WarpMouseGlobal)(int x, int y)
Definition: SDL_mouse_c.h:64
GLenum GLenum GLsizei const GLuint GLboolean enabled
void(* FreeCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:58
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
#define SDL_assert(condition)
Definition: SDL_assert.h:167
#define NULL
Definition: begin_code.h:143
SDL_PixelFormat * format
Definition: SDL_surface.h:72
struct SDL_Cursor * next
Definition: SDL_mouse_c.h:32
#define SDL_SetError
#define SDL_CreateRGBSurface
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
int xdelta
Definition: SDL_mouse_c.h:80
int SDL_SetRelativeMouseMode(SDL_bool enabled)
Set relative mouse mode.
Definition: SDL_mouse.c:571
The type used to identify a window.
Definition: SDL_sysvideo.h:71
Uint32 id
Definition: SDL_sysvideo.h:74
void(* WarpMouse)(SDL_Window *window, int x, int y)
Definition: SDL_mouse_c.h:61
#define SDL_BUTTON(X)
Definition: SDL_mouse.h:279
int SDL_SendMouseWheel(SDL_Window *window, SDL_MouseID mouseID, int x, int y, SDL_MouseWheelDirection direction)
Definition: SDL_mouse.c:406
General event structure.
Definition: SDL_events.h:521
GLubyte GLubyte GLubyte GLubyte w
GLuint GLuint GLsizei GLenum type
Definition: SDL_opengl.h:1564
#define SDL_PRESSED
Definition: SDL_events.h:50
SDL_Window * SDL_GetMouseFocus(void)
Get the window which currently has mouse focus.
Definition: SDL_mouse.c:78
SDL_Cursor * cur_cursor
Definition: SDL_mouse_c.h:93
void SDL_FreeCursor(SDL_Cursor *cursor)
Frees a cursor created with SDL_CreateCursor().
Definition: SDL_mouse.c:841
static Uint32 SDL_double_click_time
Definition: SDL_mouse.c:37
Uint32 flags
Definition: SDL_sysvideo.h:81
#define SDL_TICKS_PASSED(A, B)
Compare SDL ticks values, and return true if A has passed B.
Definition: SDL_timer.h:56
#define SDL_RELEASED
Definition: SDL_events.h:49
void(* MoveCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:55
SDL_Cursor *(* CreateSystemCursor)(SDL_SystemCursor id)
Definition: SDL_mouse_c.h:49
SDL_MouseWheelDirection
Scroll direction types for the Scroll event.
Definition: SDL_mouse.h:66
int SDL_SendMouseButton(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button)
Definition: SDL_mouse.c:326
#define SDL_Unsupported()
Definition: SDL_error.h:53
#define SDL_HINT_MOUSE_RELATIVE_MODE_WARP
A variable controlling whether relative mouse mode is implemented using mouse warping.
Definition: SDL_hints.h:244
GLfloat GLfloat GLfloat GLfloat h
static SDL_bool ShouldUseRelativeModeWarp(SDL_Mouse *mouse)
Definition: SDL_mouse.c:551
Uint32 SDL_GetRelativeMouseState(int *x, int *y)
Retrieve the relative state of the mouse.
Definition: SDL_mouse.c:479
Uint32 SDL_GetGlobalMouseState(int *x, int *y)
Get the current state of the mouse, in relation to the desktop.
Definition: SDL_mouse.c:495
SDL_Cursor * def_cursor
Definition: SDL_mouse_c.h:92