SDL  2.0
SDL_mouse.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2019 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 "../video/SDL_sysvideo.h"
31 #ifdef __WIN32__
32 #include "../core/windows/SDL_windows.h" // For GetDoubleClickTime()
33 #endif
34 
35 /* #define DEBUG_MOUSE */
36 
37 /* The mouse state */
39 
40 /* for mapping mouse events to touch */
42 
43 static int
44 SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y);
45 
46 static void SDLCALL
47 SDL_MouseDoubleClickTimeChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
48 {
49  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
50 
51  if (hint && *hint) {
52  mouse->double_click_time = SDL_atoi(hint);
53  } else {
54 #ifdef __WIN32__
55  mouse->double_click_time = GetDoubleClickTime();
56 #else
57  mouse->double_click_time = 500;
58 #endif
59  }
60 }
61 
62 static void SDLCALL
63 SDL_MouseDoubleClickRadiusChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
64 {
65  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
66 
67  if (hint && *hint) {
68  mouse->double_click_radius = SDL_atoi(hint);
69  } else {
70  mouse->double_click_radius = 32; /* 32 pixels seems about right for touch interfaces */
71  }
72 }
73 
74 static void SDLCALL
75 SDL_MouseNormalSpeedScaleChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
76 {
77  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
78 
79  if (hint && *hint) {
80  mouse->normal_speed_scale = (float)SDL_atof(hint);
81  } else {
82  mouse->normal_speed_scale = 1.0f;
83  }
84 }
85 
86 static void SDLCALL
87 SDL_MouseRelativeSpeedScaleChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
88 {
89  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
90 
91  if (hint && *hint) {
92  mouse->relative_speed_scale = (float)SDL_atof(hint);
93  } else {
94  mouse->relative_speed_scale = 1.0f;
95  }
96 }
97 
98 static void SDLCALL
99 SDL_TouchMouseEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
100 {
101  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
102 
103  if (hint && (*hint == '0' || SDL_strcasecmp(hint, "false") == 0)) {
104  mouse->touch_mouse_events = SDL_FALSE;
105  } else {
106  mouse->touch_mouse_events = SDL_TRUE;
107  }
108 }
109 
110 static void SDLCALL
111 SDL_MouseTouchEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
112 {
113  SDL_Mouse *mouse = (SDL_Mouse *)userdata;
114 
115  if (hint == NULL || *hint == '\0') {
116  /* Default */
117 #if defined(__ANDROID__) || (defined(__IPHONEOS__) && !defined(__TVOS__))
118  mouse->mouse_touch_events = SDL_TRUE;
119 #else
120  mouse->mouse_touch_events = SDL_FALSE;
121 #endif
122  } else if (*hint == '1' || SDL_strcasecmp(hint, "true") == 0) {
123  mouse->mouse_touch_events = SDL_TRUE;
124  } else {
125  mouse->mouse_touch_events = SDL_FALSE;
126  }
127 
128  if (mouse->mouse_touch_events) {
130  }
131 }
132 
133 /* Public functions */
134 int
136 {
137  SDL_Mouse *mouse = SDL_GetMouse();
138 
139  SDL_zerop(mouse);
140 
143 
146 
149 
152 
155 
158 
159  mouse->was_touch_mouse_events = SDL_FALSE; /* no touch to mouse movement event pending */
160 
161  mouse->cursor_shown = SDL_TRUE;
162 
163  return (0);
164 }
165 
166 void
168 {
169  SDL_Mouse *mouse = SDL_GetMouse();
170 
171  mouse->def_cursor = cursor;
172  if (!mouse->cur_cursor) {
174  }
175 }
176 
177 SDL_Mouse *
179 {
180  return &SDL_mouse;
181 }
182 
183 SDL_Window *
185 {
186  SDL_Mouse *mouse = SDL_GetMouse();
187 
188  return mouse->focus;
189 }
190 
191 #if 0
192 void
193 SDL_ResetMouse(void)
194 {
195  SDL_Mouse *mouse = SDL_GetMouse();
196  Uint8 i;
197 
198 #ifdef DEBUG_MOUSE
199  printf("Resetting mouse\n");
200 #endif
201  for (i = 1; i <= sizeof(mouse->buttonstate)*8; ++i) {
202  if (mouse->buttonstate & SDL_BUTTON(i)) {
203  SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, i);
204  }
205  }
206  SDL_assert(mouse->buttonstate == 0);
207 }
208 #endif
209 
210 void
212 {
213  SDL_Mouse *mouse = SDL_GetMouse();
214 
215  if (mouse->focus == window) {
216  return;
217  }
218 
219  /* Actually, this ends up being a bad idea, because most operating
220  systems have an implicit grab when you press the mouse button down
221  so you can drag things out of the window and then get the mouse up
222  when it happens. So, #if 0...
223  */
224 #if 0
225  if (mouse->focus && !window) {
226  /* We won't get anymore mouse messages, so reset mouse state */
227  SDL_ResetMouse();
228  }
229 #endif
230 
231  /* See if the current window has lost focus */
232  if (mouse->focus) {
234  }
235 
236  mouse->focus = window;
237  mouse->has_position = SDL_FALSE;
238 
239  if (mouse->focus) {
241  }
242 
243  /* Update cursor visibility */
245 }
246 
247 /* Check to see if we need to synthesize focus events */
248 static SDL_bool
249 SDL_UpdateMouseFocus(SDL_Window * window, int x, int y, Uint32 buttonstate, SDL_bool send_mouse_motion)
250 {
251  SDL_Mouse *mouse = SDL_GetMouse();
252  SDL_bool inWindow = SDL_TRUE;
253 
254  if (window && ((window->flags & SDL_WINDOW_MOUSE_CAPTURE) == 0)) {
255  int w, h;
257  if (x < 0 || y < 0 || x >= w || y >= h) {
258  inWindow = SDL_FALSE;
259  }
260  }
261 
262 /* Linux doesn't give you mouse events outside your window unless you grab
263  the pointer.
264 
265  Windows doesn't give you mouse events outside your window unless you call
266  SetCapture().
267 
268  Both of these are slightly scary changes, so for now we'll punt and if the
269  mouse leaves the window you'll lose mouse focus and reset button state.
270 */
271 #ifdef SUPPORT_DRAG_OUTSIDE_WINDOW
272  if (!inWindow && !buttonstate) {
273 #else
274  if (!inWindow) {
275 #endif
276  if (window == mouse->focus) {
277 #ifdef DEBUG_MOUSE
278  printf("Mouse left window, synthesizing move & focus lost event\n");
279 #endif
280  if (send_mouse_motion) {
282  }
284  }
285  return SDL_FALSE;
286  }
287 
288  if (window != mouse->focus) {
289 #ifdef DEBUG_MOUSE
290  printf("Mouse entered window, synthesizing focus gain & move event\n");
291 #endif
293  if (send_mouse_motion) {
295  }
296  }
297  return SDL_TRUE;
298 }
299 
300 int
301 SDL_SendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
302 {
303  if (window && !relative) {
304  SDL_Mouse *mouse = SDL_GetMouse();
305  if (!SDL_UpdateMouseFocus(window, x, y, mouse->buttonstate, (mouseID == SDL_TOUCH_MOUSEID) ? SDL_FALSE : SDL_TRUE)) {
306  return 0;
307  }
308  }
309 
310  return SDL_PrivateSendMouseMotion(window, mouseID, relative, x, y);
311 }
312 
313 static int
314 GetScaledMouseDelta(float scale, int value, float *accum)
315 {
316  if (scale != 1.0f) {
317  *accum += scale * value;
318  if (*accum >= 0.0f) {
319  value = (int)SDL_floor(*accum);
320  } else {
321  value = (int)SDL_ceil(*accum);
322  }
323  *accum -= value;
324  }
325  return value;
326 }
327 
328 static int
329 SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
330 {
331  SDL_Mouse *mouse = SDL_GetMouse();
332  int posted;
333  int xrel;
334  int yrel;
335 
336  /* SDL_HINT_MOUSE_TOUCH_EVENTS: controlling whether mouse events should generate synthetic touch events */
337  if (mouse->mouse_touch_events) {
338  if (mouseID != SDL_TOUCH_MOUSEID && !relative && track_mouse_down) {
339  if (window) {
340  float fx = (float)x / (float)window->w;
341  float fy = (float)y / (float)window->h;
342  SDL_SendTouchMotion(SDL_MOUSE_TOUCHID, 0, fx, fy, 1.0f);
343  }
344  }
345  }
346 
347  /* SDL_HINT_TOUCH_MOUSE_EVENTS: if not set, discard synthetic mouse events coming from platform layer */
348  if (mouse->touch_mouse_events == 0) {
349  if (mouseID == SDL_TOUCH_MOUSEID) {
350  return 0;
351  }
352  }
353 
354  if (mouseID != SDL_TOUCH_MOUSEID && mouse->relative_mode_warp) {
355  int center_x = 0, center_y = 0;
356  SDL_GetWindowSize(window, &center_x, &center_y);
357  center_x /= 2;
358  center_y /= 2;
359  if (x == center_x && y == center_y) {
360  mouse->last_x = center_x;
361  mouse->last_y = center_y;
362  return 0;
363  }
364  SDL_WarpMouseInWindow(window, center_x, center_y);
365  }
366 
367  if (relative) {
368  if (mouse->relative_mode) {
371  } else {
374  }
375  xrel = x;
376  yrel = y;
377  x = (mouse->last_x + xrel);
378  y = (mouse->last_y + yrel);
379  } else {
380  xrel = x - mouse->last_x;
381  yrel = y - mouse->last_y;
382  }
383 
384  /* Drop events that don't change state */
385  if (!xrel && !yrel) {
386 #ifdef DEBUG_MOUSE
387  printf("Mouse event didn't change state - dropped!\n");
388 #endif
389  return 0;
390  }
391 
392  /* Ignore relative motion when first positioning the mouse */
393  if (!mouse->has_position) {
394  xrel = 0;
395  yrel = 0;
396  mouse->has_position = SDL_TRUE;
397  }
398 
399  /* Ignore relative motion positioning the first touch */
400  if (mouseID == SDL_TOUCH_MOUSEID && !mouse->buttonstate) {
401  xrel = 0;
402  yrel = 0;
403  }
404 
405  /* Update internal mouse coordinates */
406  if (!mouse->relative_mode) {
407  mouse->x = x;
408  mouse->y = y;
409  } else {
410  mouse->x += xrel;
411  mouse->y += yrel;
412  }
413 
414  /* make sure that the pointers find themselves inside the windows,
415  unless we have the mouse captured. */
416  if (window && ((window->flags & SDL_WINDOW_MOUSE_CAPTURE) == 0)) {
417  int x_max = 0, y_max = 0;
418 
419  /* !!! FIXME: shouldn't this be (window) instead of (mouse->focus)? */
420  SDL_GetWindowSize(mouse->focus, &x_max, &y_max);
421  --x_max;
422  --y_max;
423 
424  if (mouse->x > x_max) {
425  mouse->x = x_max;
426  }
427  if (mouse->x < 0) {
428  mouse->x = 0;
429  }
430 
431  if (mouse->y > y_max) {
432  mouse->y = y_max;
433  }
434  if (mouse->y < 0) {
435  mouse->y = 0;
436  }
437  }
438 
439  mouse->xdelta += xrel;
440  mouse->ydelta += yrel;
441 
442  /* Move the mouse cursor, if needed */
443  if (mouse->cursor_shown && !mouse->relative_mode &&
444  mouse->MoveCursor && mouse->cur_cursor) {
445  mouse->MoveCursor(mouse->cur_cursor);
446  }
447 
448  /* Post the event, if desired */
449  posted = 0;
452  event.motion.type = SDL_MOUSEMOTION;
453  event.motion.windowID = mouse->focus ? mouse->focus->id : 0;
454  event.motion.which = mouseID;
455  /* Set us pending (or clear during a normal mouse movement event) as having triggered */
457  event.motion.state = mouse->buttonstate;
458  event.motion.x = mouse->x;
459  event.motion.y = mouse->y;
460  event.motion.xrel = xrel;
461  event.motion.yrel = yrel;
462  posted = (SDL_PushEvent(&event) > 0);
463  }
464  if (relative) {
465  mouse->last_x = mouse->x;
466  mouse->last_y = mouse->y;
467  } else {
468  /* Use unclamped values if we're getting events outside the window */
469  mouse->last_x = x;
470  mouse->last_y = y;
471  }
472  return posted;
473 }
474 
476 {
477  if (button >= mouse->num_clickstates) {
478  int i, count = button + 1;
479  SDL_MouseClickState *clickstate = (SDL_MouseClickState *)SDL_realloc(mouse->clickstate, count * sizeof(*mouse->clickstate));
480  if (!clickstate) {
481  return NULL;
482  }
483  mouse->clickstate = clickstate;
484 
485  for (i = mouse->num_clickstates; i < count; ++i) {
486  SDL_zero(mouse->clickstate[i]);
487  }
488  mouse->num_clickstates = count;
489  }
490  return &mouse->clickstate[button];
491 }
492 
493 static int
495 {
496  SDL_Mouse *mouse = SDL_GetMouse();
497  int posted;
498  Uint32 type;
499  Uint32 buttonstate = mouse->buttonstate;
500 
501  /* SDL_HINT_MOUSE_TOUCH_EVENTS: controlling whether mouse events should generate synthetic touch events */
502  if (mouse->mouse_touch_events) {
503  if (mouseID != SDL_TOUCH_MOUSEID && button == SDL_BUTTON_LEFT) {
504  if (state == SDL_PRESSED) {
506  } else {
508  }
509  if (window) {
510  float fx = (float)mouse->x / (float)window->w;
511  float fy = (float)mouse->y / (float)window->h;
513  }
514  }
515  }
516 
517  /* SDL_HINT_TOUCH_MOUSE_EVENTS: if not set, discard synthetic mouse events coming from platform layer */
518  if (mouse->touch_mouse_events == 0) {
519  if (mouseID == SDL_TOUCH_MOUSEID) {
520  return 0;
521  }
522  }
523 
524  /* Figure out which event to perform */
525  switch (state) {
526  case SDL_PRESSED:
528  buttonstate |= SDL_BUTTON(button);
529  break;
530  case SDL_RELEASED:
532  buttonstate &= ~SDL_BUTTON(button);
533  break;
534  default:
535  /* Invalid state -- bail */
536  return 0;
537  }
538 
539  /* We do this after calculating buttonstate so button presses gain focus */
540  if (window && state == SDL_PRESSED) {
541  SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate, SDL_TRUE);
542  }
543 
544  if (buttonstate == mouse->buttonstate) {
545  /* Ignore this event, no state change */
546  return 0;
547  }
548  mouse->buttonstate = buttonstate;
549 
550  if (clicks < 0) {
551  SDL_MouseClickState *clickstate = GetMouseClickState(mouse, button);
552  if (clickstate) {
553  if (state == SDL_PRESSED) {
554  Uint32 now = SDL_GetTicks();
555 
556  if (SDL_TICKS_PASSED(now, clickstate->last_timestamp + mouse->double_click_time) ||
557  SDL_abs(mouse->x - clickstate->last_x) > mouse->double_click_radius ||
558  SDL_abs(mouse->y - clickstate->last_y) > mouse->double_click_radius) {
559  clickstate->click_count = 0;
560  }
561  clickstate->last_timestamp = now;
562  clickstate->last_x = mouse->x;
563  clickstate->last_y = mouse->y;
564  if (clickstate->click_count < 255) {
565  ++clickstate->click_count;
566  }
567  }
568  clicks = clickstate->click_count;
569  } else {
570  clicks = 1;
571  }
572  }
573 
574  /* Post the event, if desired */
575  posted = 0;
578  event.type = type;
579  event.button.windowID = mouse->focus ? mouse->focus->id : 0;
580  event.button.which = mouseID;
581  event.button.state = state;
582  event.button.button = button;
583  event.button.clicks = (Uint8) SDL_min(clicks, 255);
584  event.button.x = mouse->x;
585  event.button.y = mouse->y;
586  posted = (SDL_PushEvent(&event) > 0);
587  }
588 
589  /* We do this after dispatching event so button releases can lose focus */
590  if (window && state == SDL_RELEASED) {
591  SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate, SDL_TRUE);
592  }
593 
594  return posted;
595 }
596 
597 int
599 {
600  clicks = SDL_max(clicks, 0);
601  return SDL_PrivateSendMouseButton(window, mouseID, state, button, clicks);
602 }
603 
604 int
606 {
607  return SDL_PrivateSendMouseButton(window, mouseID, state, button, -1);
608 }
609 
610 int
612 {
613  SDL_Mouse *mouse = SDL_GetMouse();
614  int posted;
615  int integral_x, integral_y;
616 
617  if (window) {
619  }
620 
621  if (x == 0.0f && y == 0.0f) {
622  return 0;
623  }
624 
625  mouse->accumulated_wheel_x += x;
626  if (mouse->accumulated_wheel_x > 0) {
627  integral_x = (int)SDL_floor(mouse->accumulated_wheel_x);
628  } else if (mouse->accumulated_wheel_x < 0) {
629  integral_x = (int)SDL_ceil(mouse->accumulated_wheel_x);
630  } else {
631  integral_x = 0;
632  }
633  mouse->accumulated_wheel_x -= integral_x;
634 
635  mouse->accumulated_wheel_y += y;
636  if (mouse->accumulated_wheel_y > 0) {
637  integral_y = (int)SDL_floor(mouse->accumulated_wheel_y);
638  } else if (mouse->accumulated_wheel_y < 0) {
639  integral_y = (int)SDL_ceil(mouse->accumulated_wheel_y);
640  } else {
641  integral_y = 0;
642  }
643  mouse->accumulated_wheel_y -= integral_y;
644 
645  /* Post the event, if desired */
646  posted = 0;
649  event.type = SDL_MOUSEWHEEL;
650  event.wheel.windowID = mouse->focus ? mouse->focus->id : 0;
651  event.wheel.which = mouseID;
652 #if 0 /* Uncomment this when it goes in for SDL 2.1 */
653  event.wheel.preciseX = x;
654  event.wheel.preciseY = y;
655 #endif
656  event.wheel.x = integral_x;
657  event.wheel.y = integral_y;
658  event.wheel.direction = (Uint32)direction;
659  posted = (SDL_PushEvent(&event) > 0);
660  }
661  return posted;
662 }
663 
664 void
666 {
667  SDL_Cursor *cursor, *next;
668  SDL_Mouse *mouse = SDL_GetMouse();
669 
670  if (mouse->CaptureMouse) {
672  }
674  SDL_ShowCursor(1);
675 
676  cursor = mouse->cursors;
677  while (cursor) {
678  next = cursor->next;
680  cursor = next;
681  }
682  mouse->cursors = NULL;
683  mouse->cur_cursor = NULL;
684 
685  if (mouse->def_cursor && mouse->FreeCursor) {
686  mouse->FreeCursor(mouse->def_cursor);
687  mouse->def_cursor = NULL;
688  }
689 
690  if (mouse->clickstate) {
691  SDL_free(mouse->clickstate);
692  mouse->clickstate = NULL;
693  }
694 
697 
700 }
701 
702 Uint32
703 SDL_GetMouseState(int *x, int *y)
704 {
705  SDL_Mouse *mouse = SDL_GetMouse();
706 
707  if (x) {
708  *x = mouse->x;
709  }
710  if (y) {
711  *y = mouse->y;
712  }
713  return mouse->buttonstate;
714 }
715 
716 Uint32
718 {
719  SDL_Mouse *mouse = SDL_GetMouse();
720 
721  if (x) {
722  *x = mouse->xdelta;
723  }
724  if (y) {
725  *y = mouse->ydelta;
726  }
727  mouse->xdelta = 0;
728  mouse->ydelta = 0;
729  return mouse->buttonstate;
730 }
731 
732 Uint32
734 {
735  SDL_Mouse *mouse = SDL_GetMouse();
736  int tmpx, tmpy;
737 
738  /* make sure these are never NULL for the backend implementations... */
739  if (!x) {
740  x = &tmpx;
741  }
742  if (!y) {
743  y = &tmpy;
744  }
745 
746  *x = *y = 0;
747 
748  if (!mouse->GetGlobalMouseState) {
749  return 0;
750  }
751 
752  return mouse->GetGlobalMouseState(x, y);
753 }
754 
755 void
757 {
758  SDL_Mouse *mouse = SDL_GetMouse();
759 
760  if (window == NULL) {
761  window = mouse->focus;
762  }
763 
764  if (window == NULL) {
765  return;
766  }
767 
768  if (mouse->WarpMouse) {
769  mouse->WarpMouse(window, x, y);
770  } else {
771  SDL_SendMouseMotion(window, mouse->mouseID, 0, x, y);
772  }
773 }
774 
775 int
777 {
778  SDL_Mouse *mouse = SDL_GetMouse();
779 
780  if (mouse->WarpMouseGlobal) {
781  return mouse->WarpMouseGlobal(x, y);
782  }
783 
784  return SDL_Unsupported();
785 }
786 
787 static SDL_bool
789 {
790  if (!mouse->WarpMouse) {
791  /* Need this functionality for relative mode warp implementation */
792  return SDL_FALSE;
793  }
794 
796 }
797 
798 int
800 {
801  SDL_Mouse *mouse = SDL_GetMouse();
802  SDL_Window *focusWindow = SDL_GetKeyboardFocus();
803 
804  if (enabled == mouse->relative_mode) {
805  return 0;
806  }
807 
808  /* Set the relative mode */
809  if (!enabled && mouse->relative_mode_warp) {
810  mouse->relative_mode_warp = SDL_FALSE;
811  } else if (enabled && ShouldUseRelativeModeWarp(mouse)) {
812  mouse->relative_mode_warp = SDL_TRUE;
813  } else if (!mouse->SetRelativeMouseMode || mouse->SetRelativeMouseMode(enabled) < 0) {
814  if (enabled) {
815  /* Fall back to warp mode if native relative mode failed */
816  if (!mouse->WarpMouse) {
817  return SDL_SetError("No relative mode implementation available");
818  }
819  mouse->relative_mode_warp = SDL_TRUE;
820  }
821  }
822  mouse->relative_mode = enabled;
823  mouse->scale_accum_x = 0.0f;
824  mouse->scale_accum_y = 0.0f;
825 
826  if (enabled && focusWindow) {
827  /* Center it in the focused window to prevent clicks from going through
828  * to background windows.
829  */
830  SDL_SetMouseFocus(focusWindow);
831  SDL_WarpMouseInWindow(focusWindow, focusWindow->w/2, focusWindow->h/2);
832  }
833 
834  if (mouse->focus) {
835  SDL_UpdateWindowGrab(mouse->focus);
836 
837  /* Put the cursor back to where the application expects it */
838  if (!enabled) {
839  SDL_WarpMouseInWindow(mouse->focus, mouse->x, mouse->y);
840  }
841  }
842 
843  /* Flush pending mouse motion - ideally we would pump events, but that's not always safe */
845 
846  /* Update cursor visibility */
848 
849  return 0;
850 }
851 
852 SDL_bool
854 {
855  SDL_Mouse *mouse = SDL_GetMouse();
856 
857  return mouse->relative_mode;
858 }
859 
860 int
862 {
863  SDL_Mouse *mouse = SDL_GetMouse();
864  SDL_Window *focusWindow;
865  SDL_bool isCaptured;
866 
867  if (!mouse->CaptureMouse) {
868  return SDL_Unsupported();
869  }
870 
871  focusWindow = SDL_GetKeyboardFocus();
872 
873  isCaptured = focusWindow && (focusWindow->flags & SDL_WINDOW_MOUSE_CAPTURE);
874  if (isCaptured == enabled) {
875  return 0; /* already done! */
876  }
877 
878  if (enabled) {
879  if (!focusWindow) {
880  return SDL_SetError("No window has focus");
881  } else if (mouse->CaptureMouse(focusWindow) == -1) {
882  return -1; /* CaptureMouse() should call SetError */
883  }
884  focusWindow->flags |= SDL_WINDOW_MOUSE_CAPTURE;
885  } else {
886  if (mouse->CaptureMouse(NULL) == -1) {
887  return -1; /* CaptureMouse() should call SetError */
888  }
889  focusWindow->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
890  }
891 
892  return 0;
893 }
894 
895 SDL_Cursor *
897  int w, int h, int hot_x, int hot_y)
898 {
901  int x, y;
902  Uint32 *pixel;
903  Uint8 datab = 0, maskb = 0;
904  const Uint32 black = 0xFF000000;
905  const Uint32 white = 0xFFFFFFFF;
906  const Uint32 transparent = 0x00000000;
907 
908  /* Make sure the width is a multiple of 8 */
909  w = ((w + 7) & ~7);
910 
911  /* Create the surface from a bitmap */
912  surface = SDL_CreateRGBSurface(0, w, h, 32,
913  0x00FF0000,
914  0x0000FF00,
915  0x000000FF,
916  0xFF000000);
917  if (!surface) {
918  return NULL;
919  }
920  for (y = 0; y < h; ++y) {
921  pixel = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch);
922  for (x = 0; x < w; ++x) {
923  if ((x % 8) == 0) {
924  datab = *data++;
925  maskb = *mask++;
926  }
927  if (maskb & 0x80) {
928  *pixel++ = (datab & 0x80) ? black : white;
929  } else {
930  *pixel++ = (datab & 0x80) ? black : transparent;
931  }
932  datab <<= 1;
933  maskb <<= 1;
934  }
935  }
936 
938 
940 
941  return cursor;
942 }
943 
944 SDL_Cursor *
946 {
947  SDL_Mouse *mouse = SDL_GetMouse();
948  SDL_Surface *temp = NULL;
950 
951  if (!surface) {
952  SDL_SetError("Passed NULL cursor surface");
953  return NULL;
954  }
955 
956  if (!mouse->CreateCursor) {
957  SDL_SetError("Cursors are not currently supported");
958  return NULL;
959  }
960 
961  /* Sanity check the hot spot */
962  if ((hot_x < 0) || (hot_y < 0) ||
963  (hot_x >= surface->w) || (hot_y >= surface->h)) {
964  SDL_SetError("Cursor hot spot doesn't lie within cursor");
965  return NULL;
966  }
967 
968  if (surface->format->format != SDL_PIXELFORMAT_ARGB8888) {
970  if (!temp) {
971  return NULL;
972  }
973  surface = temp;
974  }
975 
976  cursor = mouse->CreateCursor(surface, hot_x, hot_y);
977  if (cursor) {
978  cursor->next = mouse->cursors;
979  mouse->cursors = cursor;
980  }
981 
982  SDL_FreeSurface(temp);
983 
984  return cursor;
985 }
986 
987 SDL_Cursor *
989 {
990  SDL_Mouse *mouse = SDL_GetMouse();
992 
993  if (!mouse->CreateSystemCursor) {
994  SDL_SetError("CreateSystemCursor is not currently supported");
995  return NULL;
996  }
997 
998  cursor = mouse->CreateSystemCursor(id);
999  if (cursor) {
1000  cursor->next = mouse->cursors;
1001  mouse->cursors = cursor;
1002  }
1003 
1004  return cursor;
1005 }
1006 
1007 /* SDL_SetCursor(NULL) can be used to force the cursor redraw,
1008  if this is desired for any reason. This is used when setting
1009  the video mode and when the SDL window gains the mouse focus.
1010  */
1011 void
1013 {
1014  SDL_Mouse *mouse = SDL_GetMouse();
1015 
1016  /* Set the new cursor */
1017  if (cursor) {
1018  /* Make sure the cursor is still valid for this mouse */
1019  if (cursor != mouse->def_cursor) {
1020  SDL_Cursor *found;
1021  for (found = mouse->cursors; found; found = found->next) {
1022  if (found == cursor) {
1023  break;
1024  }
1025  }
1026  if (!found) {
1027  SDL_SetError("Cursor not associated with the current mouse");
1028  return;
1029  }
1030  }
1031  mouse->cur_cursor = cursor;
1032  } else {
1033  if (mouse->focus) {
1034  cursor = mouse->cur_cursor;
1035  } else {
1036  cursor = mouse->def_cursor;
1037  }
1038  }
1039 
1040  if (cursor && mouse->cursor_shown && !mouse->relative_mode) {
1041  if (mouse->ShowCursor) {
1042  mouse->ShowCursor(cursor);
1043  }
1044  } else {
1045  if (mouse->ShowCursor) {
1046  mouse->ShowCursor(NULL);
1047  }
1048  }
1049 }
1050 
1051 SDL_Cursor *
1053 {
1054  SDL_Mouse *mouse = SDL_GetMouse();
1055 
1056  if (!mouse) {
1057  return NULL;
1058  }
1059  return mouse->cur_cursor;
1060 }
1061 
1062 SDL_Cursor *
1064 {
1065  SDL_Mouse *mouse = SDL_GetMouse();
1066 
1067  if (!mouse) {
1068  return NULL;
1069  }
1070  return mouse->def_cursor;
1071 }
1072 
1073 void
1075 {
1076  SDL_Mouse *mouse = SDL_GetMouse();
1077  SDL_Cursor *curr, *prev;
1078 
1079  if (!cursor) {
1080  return;
1081  }
1082 
1083  if (cursor == mouse->def_cursor) {
1084  return;
1085  }
1086  if (cursor == mouse->cur_cursor) {
1087  SDL_SetCursor(mouse->def_cursor);
1088  }
1089 
1090  for (prev = NULL, curr = mouse->cursors; curr;
1091  prev = curr, curr = curr->next) {
1092  if (curr == cursor) {
1093  if (prev) {
1094  prev->next = curr->next;
1095  } else {
1096  mouse->cursors = curr->next;
1097  }
1098 
1099  if (mouse->FreeCursor) {
1100  mouse->FreeCursor(curr);
1101  }
1102  return;
1103  }
1104  }
1105 }
1106 
1107 int
1108 SDL_ShowCursor(int toggle)
1109 {
1110  SDL_Mouse *mouse = SDL_GetMouse();
1111  SDL_bool shown;
1112 
1113  if (!mouse) {
1114  return 0;
1115  }
1116 
1117  shown = mouse->cursor_shown;
1118  if (toggle >= 0) {
1119  if (toggle) {
1120  mouse->cursor_shown = SDL_TRUE;
1121  } else {
1122  mouse->cursor_shown = SDL_FALSE;
1123  }
1124  if (mouse->cursor_shown != shown) {
1126  }
1127  }
1128  return shown;
1129 }
1130 
1131 /* vi: set ts=4 sw=4 expandtab: */
SDL_GetMouse
SDL_Mouse * SDL_GetMouse(void)
Definition: SDL_mouse.c:178
SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
SDL_WINDOW_MOUSE_CAPTURE
@ SDL_WINDOW_MOUSE_CAPTURE
Definition: SDL_video.h:116
ShouldUseRelativeModeWarp
static SDL_bool ShouldUseRelativeModeWarp(SDL_Mouse *mouse)
Definition: SDL_mouse.c:788
SDL_TOUCH_DEVICE_DIRECT
@ SDL_TOUCH_DEVICE_DIRECT
Definition: SDL_touch.h:47
SDL_Mouse::WarpMouseGlobal
int(* WarpMouseGlobal)(int x, int y)
Definition: SDL_mouse_c.h:64
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
SDL_events.h
SDL_GetGlobalMouseState
Uint32 SDL_GetGlobalMouseState(int *x, int *y)
Get the current state of the mouse, in relation to the desktop.
Definition: SDL_mouse.c:733
SDL_Mouse::CaptureMouse
int(* CaptureMouse)(SDL_Window *window)
Definition: SDL_mouse_c.h:70
SDL_Mouse::buttonstate
Uint32 buttonstate
Definition: SDL_mouse_c.h:85
mask
GLenum GLint GLuint mask
Definition: SDL_opengl_glext.h:657
scale
GLenum GLenum GLenum GLenum GLenum scale
Definition: SDL_opengl_glext.h:9375
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:70
SDL_Cursor
Definition: SDL_mouse_c.h:30
SDL_FlushEvent
#define SDL_FlushEvent
Definition: SDL_dynapi_overrides.h:120
SDL_ConvertSurfaceFormat
#define SDL_ConvertSurfaceFormat
Definition: SDL_dynapi_overrides.h:464
SDL_abs
#define SDL_abs
Definition: SDL_dynapi_overrides.h:381
SDL_Mouse::scale_accum_y
float scale_accum_y
Definition: SDL_mouse_c.h:92
SDL_HINT_TOUCH_MOUSE_EVENTS
#define SDL_HINT_TOUCH_MOUSE_EVENTS
A variable controlling whether touch events should generate synthetic mouse events.
Definition: SDL_hints.h:316
SDL_GetCursor
SDL_Cursor * SDL_GetCursor(void)
Return the active cursor.
Definition: SDL_mouse.c:1052
SDL_Mouse::cursors
SDL_Cursor * cursors
Definition: SDL_mouse_c.h:103
SDL_ceil
#define SDL_ceil
Definition: SDL_dynapi_overrides.h:426
NULL
#define NULL
Definition: begin_code.h:167
surface
EGLSurface surface
Definition: eglext.h:248
SDL_timer.h
SDL_TouchMouseEventsChanged
static void SDL_TouchMouseEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:99
SDL_PrivateSendMouseMotion
static int SDL_PrivateSendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:329
SDL_zerop
#define SDL_zerop(x)
Definition: SDL_stdinc.h:417
SDL_Mouse::scale_accum_x
float scale_accum_x
Definition: SDL_mouse_c.h:91
SDL_MouseDoubleClickTimeChanged
static void SDL_MouseDoubleClickTimeChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:47
SDL_WINDOWEVENT_ENTER
@ SDL_WINDOWEVENT_ENTER
Definition: SDL_video.h:163
SDL_CreateColorCursor
SDL_Cursor * SDL_CreateColorCursor(SDL_Surface *surface, int hot_x, int hot_y)
Create a color cursor.
Definition: SDL_mouse.c:945
SDL_Mouse::touch_mouse_events
SDL_bool touch_mouse_events
Definition: SDL_mouse_c.h:95
SDL_MouseClickState
Definition: SDL_mouse_c.h:36
count
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1571
SDLCALL
#define SDLCALL
Definition: SDL_internal.h:49
SDL_Mouse::double_click_radius
int double_click_radius
Definition: SDL_mouse_c.h:94
SDL_Mouse::normal_speed_scale
float normal_speed_scale
Definition: SDL_mouse_c.h:89
SDL_MouseNormalSpeedScaleChanged
static void SDL_MouseNormalSpeedScaleChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:75
SDL_Mouse::accumulated_wheel_x
float accumulated_wheel_x
Definition: SDL_mouse_c.h:83
SDL_Mouse::y
int y
Definition: SDL_mouse_c.h:79
SDL_MOUSEBUTTONUP
@ SDL_MOUSEBUTTONUP
Definition: SDL_events.h:107
SDL_realloc
#define SDL_realloc
Definition: SDL_dynapi_overrides.h:376
SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS
#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS
A variable setting the double click radius, in pixels.
Definition: SDL_hints.h:273
SDL_SetCursor
void SDL_SetCursor(SDL_Cursor *cursor)
Set the active cursor.
Definition: SDL_mouse.c:1012
SDL_GetMouseState
Uint32 SDL_GetMouseState(int *x, int *y)
Retrieve the current state of the mouse.
Definition: SDL_mouse.c:703
SDL_floor
#define SDL_floor
Definition: SDL_dynapi_overrides.h:431
SDL_SendMouseButtonClicks
int SDL_SendMouseButtonClicks(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button, int clicks)
Definition: SDL_mouse.c:598
SDL_Mouse::SetRelativeMouseMode
int(* SetRelativeMouseMode)(SDL_bool enabled)
Definition: SDL_mouse_c.h:67
SDL_ENABLE
#define SDL_ENABLE
Definition: SDL_events.h:759
SDL_SendTouch
int SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid, SDL_bool down, float x, float y, float pressure)
Definition: SDL_touch.c:242
SDL_RELEASED
#define SDL_RELEASED
Definition: SDL_events.h:49
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_SetMouseFocus
void SDL_SetMouseFocus(SDL_Window *window)
Definition: SDL_mouse.c:211
SDL_SendTouchMotion
int SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid, float x, float y, float pressure)
Definition: SDL_touch.c:364
SDL_MouseID
Uint32 SDL_MouseID
Definition: SDL_mouse_c.h:28
SDL_WarpMouseInWindow
void SDL_WarpMouseInWindow(SDL_Window *window, int x, int y)
Moves the mouse to the given position within the window.
Definition: SDL_mouse.c:756
SDL_WarpMouseGlobal
int SDL_WarpMouseGlobal(int x, int y)
Moves the mouse to the given position in global screen space.
Definition: SDL_mouse.c:776
SDL_ShowCursor
int SDL_ShowCursor(int toggle)
Toggle whether or not the cursor is shown.
Definition: SDL_mouse.c:1108
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_GetKeyboardFocus
#define SDL_GetKeyboardFocus
Definition: SDL_dynapi_overrides.h:216
SDL_MouseTouchEventsChanged
static void SDL_MouseTouchEventsChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:111
SDL_strcasecmp
#define SDL_strcasecmp
Definition: SDL_dynapi_overrides.h:419
SDL_MouseQuit
void SDL_MouseQuit(void)
Definition: SDL_mouse.c:665
SDL_TOUCH_MOUSEID
#define SDL_TOUCH_MOUSEID
Definition: SDL_touch.h:61
SDL_CreateCursor
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:896
SDL_GetDefaultCursor
SDL_Cursor * SDL_GetDefaultCursor(void)
Return the default cursor.
Definition: SDL_mouse.c:1063
SDL_GetWindowSize
#define SDL_GetWindowSize
Definition: SDL_dynapi_overrides.h:527
SDL_Mouse::mouse_touch_events
SDL_bool mouse_touch_events
Definition: SDL_mouse_c.h:96
SDL_Window::w
int w
Definition: SDL_sysvideo.h:80
SDL_Mouse::was_touch_mouse_events
SDL_bool was_touch_mouse_events
Definition: SDL_mouse_c.h:97
SDL_PRESSED
#define SDL_PRESSED
Definition: SDL_events.h:50
SDL_Mouse::ydelta
int ydelta
Definition: SDL_mouse_c.h:81
SDL_MouseInit
int SDL_MouseInit(void)
Definition: SDL_mouse.c:135
SDL_CaptureMouse
int SDL_CaptureMouse(SDL_bool enabled)
Capture the mouse, to track input outside an SDL window.
Definition: SDL_mouse.c:861
SDL_GetHintBoolean
#define SDL_GetHintBoolean
Definition: SDL_dynapi_overrides.h:608
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_Mouse::MoveCursor
void(* MoveCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:55
SDL_FALSE
@ SDL_FALSE
Definition: SDL_stdinc.h:163
SDL_AddTouch
int SDL_AddTouch(SDL_TouchID touchID, SDL_TouchDeviceType type, const char *name)
Definition: SDL_touch.c:155
SDL_Mouse::relative_mode
SDL_bool relative_mode
Definition: SDL_mouse_c.h:87
SDL_MOUSEMOTION
@ SDL_MOUSEMOTION
Definition: SDL_events.h:105
SDL_BUTTON_LEFT
#define SDL_BUTTON_LEFT
Definition: SDL_mouse.h:282
SDL_atof
#define SDL_atof
Definition: SDL_dynapi_overrides.h:411
x
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1574
SDL_Mouse::WarpMouse
void(* WarpMouse)(SDL_Window *window, int x, int y)
Definition: SDL_mouse_c.h:61
SDL_UpdateMouseFocus
static SDL_bool SDL_UpdateMouseFocus(SDL_Window *window, int x, int y, Uint32 buttonstate, SDL_bool send_mouse_motion)
Definition: SDL_mouse.c:249
SDL_GetEventState
#define SDL_GetEventState(type)
Definition: SDL_events.h:772
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
f
GLfloat f
Definition: SDL_opengl_glext.h:1870
SDL_PushEvent
#define SDL_PushEvent
Definition: SDL_dynapi_overrides.h:125
SDL_max
#define SDL_max(x, y)
Definition: SDL_stdinc.h:407
SDL_mouse
static SDL_Mouse SDL_mouse
Definition: SDL_mouse.c:38
GetMouseClickState
static SDL_MouseClickState * GetMouseClickState(SDL_Mouse *mouse, Uint8 button)
Definition: SDL_mouse.c:475
SDL_GetRelativeMouseMode
SDL_bool SDL_GetRelativeMouseMode()
Query whether relative mouse mode is enabled.
Definition: SDL_mouse.c:853
name
GLuint const GLchar * name
Definition: SDL_opengl_glext.h:660
SDL_MouseClickState::click_count
Uint8 click_count
Definition: SDL_mouse_c.h:40
SDL_Mouse::relative_speed_scale
float relative_speed_scale
Definition: SDL_mouse_c.h:90
SDL_MouseClickState::last_timestamp
Uint32 last_timestamp
Definition: SDL_mouse_c.h:39
SDL_SendMouseMotion
int SDL_SendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:301
SDL_Mouse::def_cursor
SDL_Cursor * def_cursor
Definition: SDL_mouse_c.h:104
SDL_FreeSurface
#define SDL_FreeSurface
Definition: SDL_dynapi_overrides.h:446
SDL_CreateSystemCursor
SDL_Cursor * SDL_CreateSystemCursor(SDL_SystemCursor id)
Create a system cursor.
Definition: SDL_mouse.c:988
SDL_MOUSEWHEEL
@ SDL_MOUSEWHEEL
Definition: SDL_events.h:108
GetScaledMouseDelta
static int GetScaledMouseDelta(float scale, int value, float *accum)
Definition: SDL_mouse.c:314
SDL_Cursor::next
struct SDL_Cursor * next
Definition: SDL_mouse_c.h:32
SDL_SystemCursor
SDL_SystemCursor
Cursor types for SDL_CreateSystemCursor().
Definition: SDL_mouse.h:46
SDL_assert.h
SDL_GetTicks
Uint32 SDL_GetTicks(void)
Get the number of milliseconds since the SDL library initialization.
SDL_min
#define SDL_min(x, y)
Definition: SDL_stdinc.h:406
SDL_UpdateWindowGrab
void SDL_UpdateWindowGrab(SDL_Window *window)
Definition: SDL_video.c:2520
SDL_Mouse
Definition: SDL_mouse_c.h:43
SDL_Mouse::CreateSystemCursor
SDL_Cursor *(* CreateSystemCursor)(SDL_SystemCursor id)
Definition: SDL_mouse_c.h:49
SDL_PIXELFORMAT_ARGB8888
@ SDL_PIXELFORMAT_ARGB8888
Definition: SDL_pixels.h:248
SDL_Mouse::relative_mode_warp
SDL_bool relative_mode_warp
Definition: SDL_mouse_c.h:88
hot_x
int uint32_t uint32_t uint32_t uint32_t uint32_t int drmModeModeInfoPtr mode int uint32_t uint32_t uint32_t uint32_t int32_t hot_x
Definition: SDL_kmsdrmsym.h:57
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
SDL_MouseDoubleClickRadiusChanged
static void SDL_MouseDoubleClickRadiusChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:63
SDL_Mouse::focus
SDL_Window * focus
Definition: SDL_mouse_c.h:77
SDL_Window::h
int h
Definition: SDL_sysvideo.h:80
SDL_Mouse::accumulated_wheel_y
float accumulated_wheel_y
Definition: SDL_mouse_c.h:84
cursor
SDL_Cursor * cursor
Definition: testwm2.c:40
SDL_Mouse::ShowCursor
int(* ShowCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:52
y
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1574
SDL_Mouse::num_clickstates
int num_clickstates
Definition: SDL_mouse_c.h:100
SDL_SendMouseWheel
int SDL_SendMouseWheel(SDL_Window *window, SDL_MouseID mouseID, float x, float y, SDL_MouseWheelDirection direction)
Definition: SDL_mouse.c:611
SDL_MOUSE_TOUCHID
#define SDL_MOUSE_TOUCHID
Definition: SDL_touch.h:64
SDL_CreateRGBSurface
#define SDL_CreateRGBSurface
Definition: SDL_dynapi_overrides.h:444
SDL_Mouse::xdelta
int xdelta
Definition: SDL_mouse_c.h:80
SDL_SetDefaultCursor
void SDL_SetDefaultCursor(SDL_Cursor *cursor)
Definition: SDL_mouse.c:167
SDL_atoi
#define SDL_atoi
Definition: SDL_dynapi_overrides.h:410
SDL_Mouse::last_y
int last_y
Definition: SDL_mouse_c.h:82
SDL_SetRelativeMouseMode
int SDL_SetRelativeMouseMode(SDL_bool enabled)
Set relative mouse mode.
Definition: SDL_mouse.c:799
SDL_HINT_MOUSE_DOUBLE_CLICK_TIME
#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME
A variable setting the double click time, in milliseconds.
Definition: SDL_hints.h:268
SDL_MouseRelativeSpeedScaleChanged
static void SDL_MouseRelativeSpeedScaleChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_mouse.c:87
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_AddHintCallback
#define SDL_AddHintCallback
Definition: SDL_dynapi_overrides.h:192
SDL_Mouse::last_x
int last_x
Definition: SDL_mouse_c.h:82
SDL_Mouse::x
int x
Definition: SDL_mouse_c.h:78
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:698
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_Mouse::clickstate
SDL_MouseClickState * clickstate
Definition: SDL_mouse_c.h:101
SDL_Window::id
Uint32 id
Definition: SDL_sysvideo.h:76
SDL_HINT_MOUSE_TOUCH_EVENTS
#define SDL_HINT_MOUSE_TOUCH_EVENTS
A variable controlling whether mouse events should generate synthetic touch events.
Definition: SDL_hints.h:326
SDL_hints.h
SDL_Mouse::has_position
SDL_bool has_position
Definition: SDL_mouse_c.h:86
SDL_Mouse::FreeCursor
void(* FreeCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:58
SDL_HINT_MOUSE_NORMAL_SPEED_SCALE
#define SDL_HINT_MOUSE_NORMAL_SPEED_SCALE
A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in rela...
Definition: SDL_hints.h:278
SDL_Mouse::CreateCursor
SDL_Cursor *(* CreateCursor)(SDL_Surface *surface, int hot_x, int hot_y)
Definition: SDL_mouse_c.h:46
SDL_SendWindowEvent
int SDL_SendWindowEvent(SDL_Window *window, Uint8 windowevent, int data1, int data2)
Definition: SDL_windowevents.c:74
SDL_Mouse::GetGlobalMouseState
Uint32(* GetGlobalMouseState)(int *x, int *y)
Definition: SDL_mouse_c.h:73
SDL_events_c.h
SDL_Mouse::mouseID
SDL_MouseID mouseID
Definition: SDL_mouse_c.h:76
SDL_MOUSEBUTTONDOWN
@ SDL_MOUSEBUTTONDOWN
Definition: SDL_events.h:106
enabled
GLenum GLenum GLsizei const GLuint GLboolean enabled
Definition: SDL_opengl_glext.h:2479
SDL_TICKS_PASSED
#define SDL_TICKS_PASSED(A, B)
Compare SDL ticks values, and return true if A has passed B.
Definition: SDL_timer.h:56
SDL_FreeCursor
void SDL_FreeCursor(SDL_Cursor *cursor)
Frees a cursor created with SDL_CreateCursor() or similar functions.
Definition: SDL_mouse.c:1074
SDL_GetMouseFocus
SDL_Window * SDL_GetMouseFocus(void)
Get the window which currently has mouse focus.
Definition: SDL_mouse.c:184
SDL_Event
General event structure.
Definition: SDL_events.h:557
SDL_DelHintCallback
#define SDL_DelHintCallback
Definition: SDL_dynapi_overrides.h:193
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
track_mouse_down
static SDL_bool track_mouse_down
Definition: SDL_mouse.c:41
SDL_BUTTON
#define SDL_BUTTON(X)
Definition: SDL_mouse.h:281
SDL_MouseWheelDirection
SDL_MouseWheelDirection
Scroll direction types for the Scroll event.
Definition: SDL_mouse.h:66
SDL_HINT_MOUSE_RELATIVE_MODE_WARP
#define SDL_HINT_MOUSE_RELATIVE_MODE_WARP
A variable controlling whether relative mouse mode is implemented using mouse warping.
Definition: SDL_hints.h:294
SDL_MouseClickState::last_y
int last_y
Definition: SDL_mouse_c.h:38
SDL_GetRelativeMouseState
Uint32 SDL_GetRelativeMouseState(int *x, int *y)
Retrieve the relative state of the mouse.
Definition: SDL_mouse.c:717
SDL_MouseClickState::last_x
int last_x
Definition: SDL_mouse_c.h:38
SDL_Window::flags
Uint32 flags
Definition: SDL_sysvideo.h:83
type
GLuint GLuint GLsizei GLenum type
Definition: SDL_opengl.h:1571
state
struct xkb_state * state
Definition: SDL_waylandsym.h:113
i
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:50
SDL_Mouse::double_click_time
Uint32 double_click_time
Definition: SDL_mouse_c.h:93
button
SDL_Texture * button
Definition: testgamecontroller.c:67
SDL_Mouse::cur_cursor
SDL_Cursor * cur_cursor
Definition: SDL_mouse_c.h:105
SDL_SendMouseButton
int SDL_SendMouseButton(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button)
Definition: SDL_mouse.c:605
SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE
#define SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE
A variable setting the scale for mouse motion, in floating point, when the mouse is in relative mode.
Definition: SDL_hints.h:283
SDL_WINDOWEVENT_LEAVE
@ SDL_WINDOWEVENT_LEAVE
Definition: SDL_video.h:164
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:161
SDL_Mouse::cursor_shown
SDL_bool cursor_shown
Definition: SDL_mouse_c.h:106
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
SDL_PrivateSendMouseButton
static int SDL_PrivateSendMouseButton(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button, int clicks)
Definition: SDL_mouse.c:494
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179