1 #include <Elementary.h>
3 /** @defgroup Elm_Gesture_Layer Gesture Layer */
6 #define ELM_MOUSE_DEVICE 0
7 /* ELM_GESTURE_NEGATIVE_ANGLE - magic number says we didn't compute this yet */
8 #define ELM_GESTURE_NEGATIVE_ANGLE (-1.0) /* Magic number */
9 #define ELM_GESTURE_MOMENTUM_DELAY 25
10 #define ELM_GESTURE_MOMENTUM_TIMEOUT 50
11 #define ELM_GESTURE_MULTI_TIMEOUT 50
12 #define ELM_GESTURE_MINIMUM_MOMENTUM 0.001
14 /* Some Trigo values */
15 #define RAD_90DEG M_PI_2
16 #define RAD_180DEG M_PI
17 #define RAD_270DEG (M_PI_2 * 3)
18 #define RAD_360DEG (M_PI * 2)
19 /* #define DEBUG_GESTURE_LAYER 1 */
21 #define RAD2DEG(x) ((x) * 57.295779513)
22 #define DEG2RAD(x) ((x) / 57.295779513)
25 _glayer_bufdup(void *buf, size_t size)
32 #define COPY_EVENT_INFO(EV) _glayer_bufdup(EV, sizeof(*EV))
35 #define SET_TEST_BIT(P) do { \
36 P->test = P->fn[ELM_GESTURE_STATE_START].cb || P->fn[ELM_GESTURE_STATE_MOVE].cb || P->fn[ELM_GESTURE_STATE_END].cb || P->fn[ELM_GESTURE_STATE_ABORT].cb; \
39 #define IS_TESTED(T) ((wd->gesture[T]) ? wd->gesture[T]->test : EINA_FALSE)
45 * Struct holds callback information.
47 * @ingroup Elm_Gesture_Layer
51 void *user_data; /**< Holds user data to CB (like sd) */
52 Elm_Gesture_Event_Cb cb;
59 * type for callback information
61 * @ingroup Elm_Gesture_Layer
63 typedef struct _Func_Data Func_Data;
68 * @struct _Gesture_Info
69 * Struct holds gesture info
71 * @ingroup Elm_Gesture_Layer
76 void *data; /**< Holds gesture intemidiate processing data */
77 Func_Data fn[ELM_GESTURE_STATE_ABORT + 1]; /**< Callback info for states */
78 Elm_Gesture_Type g_type; /**< gesture type */
79 Elm_Gesture_State state; /**< gesture state */
80 void *info; /**< Data for the state callback */
81 Eina_Bool test; /**< if true this gesture should be tested on input */
87 * @typedef Gesture_Info
88 * Type for _Gesture_Info
90 * @ingroup Elm_Gesture_Layer
92 typedef struct _Gesture_Info Gesture_Info;
97 * @struct _Event_History
98 * Struct holds event history.
99 * These events are repeated if no gesture found.
101 * @ingroup Elm_Gesture_Layer
103 struct _Event_History
107 Evas_Callback_Type event_type;
113 * @typedef Event_History
114 * Type for _Event_History
116 * @ingroup Elm_Gesture_Layer
118 typedef struct _Event_History Event_History;
123 * @struct _Pointer_Event
124 * Struct holds pointer-event info
125 * This is a generic pointer event structure
127 * @ingroup Elm_Gesture_Layer
129 struct _Pointer_Event
132 unsigned int timestamp;
134 Evas_Callback_Type event_type;
140 * @typedef Pointer_Event
141 * Type for generic pointer event structure
143 * @ingroup Elm_Gesture_Layer
145 typedef struct _Pointer_Event Pointer_Event;
147 /* All *Type structs hold result for the user in 'info' field
148 * The rest is gesture processing intermediate data.
149 * NOTE: info field must be FIRST in the struct.
150 * This is used when reporting ABORT in event_history_clear() */
153 Elm_Gesture_Taps_Info info;
156 unsigned int n_taps_needed;
160 typedef struct _Taps_Type Taps_Type;
162 struct _Long_Tap_Type
164 Elm_Gesture_Taps_Info info;
167 unsigned int max_touched;
168 Ecore_Timer *timeout; /* When this expires, long tap STARTed */
171 typedef struct _Long_Tap_Type Long_Tap_Type;
173 struct _Momentum_Type
174 { /* Fields used by _line_test() */
175 Elm_Gesture_Momentum_Info info;
176 Evas_Coord_Point line_st;
177 Evas_Coord_Point line_end;
178 unsigned int t_st_x; /* Time start on X */
179 unsigned int t_st_y; /* Time start on Y */
180 unsigned int t_end; /* Time end */
181 unsigned int t_up; /* Recent up event time */
184 typedef struct _Momentum_Type Momentum_Type;
188 Evas_Coord_Point line_st;
189 Evas_Coord_Point line_end;
190 Evas_Coord line_length;
191 unsigned int t_st; /* Time start */
192 unsigned int t_end; /* Time end */
194 double line_angle; /* Current angle of line */
196 typedef struct _Line_Data Line_Data;
199 { /* Fields used by _line_test() */
200 Elm_Gesture_Line_Info info;
201 Eina_List *list; /* List of Line_Data */
203 typedef struct _Line_Type Line_Type;
206 { /* Fields used by _zoom_test() */
207 Elm_Gesture_Zoom_Info info;
208 Pointer_Event zoom_st;
209 Pointer_Event zoom_mv;
210 Pointer_Event zoom_st1;
211 Pointer_Event zoom_mv1;
212 Evas_Event_Mouse_Wheel *zoom_wheel;
213 Evas_Coord zoom_base; /* Holds gap between fingers on zoom-start */
214 Evas_Coord zoom_distance_tolerance;
215 unsigned int m_st_tm; /* momentum start time */
216 unsigned int m_prev_tm; /* momentum prev time */
217 int dir; /* Direction: 1=zoom-in, (-1)=zoom-out */
218 double m_base; /* zoom value when momentum starts */
221 typedef struct _Zoom_Type Zoom_Type;
224 { /* Fields used by _rotation_test() */
225 Elm_Gesture_Rotate_Info info;
226 Pointer_Event rotate_st;
227 Pointer_Event rotate_mv;
228 Pointer_Event rotate_st1;
229 Pointer_Event rotate_mv1;
230 unsigned int prev_momentum_tm; /* timestamp of prev_momentum */
231 double prev_momentum; /* Snapshot of momentum 0.01 sec ago */
232 double accum_momentum;
233 double rotate_angular_tolerance;
236 typedef struct _Rotate_Type Rotate_Type;
240 Evas_Object *target; /* Target Widget */
241 Event_History *event_history_list;
244 Evas_Coord zoom_distance_tolerance;
245 Evas_Coord line_distance_tolerance;
246 double line_angular_tolerance;
247 double zoom_wheel_factor; /* mouse wheel zoom steps */
248 double zoom_finger_factor; /* used for zoom factor */
249 double rotate_angular_tolerance;
250 unsigned int flick_time_limit_ms;
251 double long_tap_start_timeout;
252 Eina_Bool glayer_continues_enable;
257 Gesture_Info *gesture[ELM_GESTURE_LAST];
258 Ecore_Timer *dbl_timeout; /* When this expires, dbl click/taps ABORTed */
259 Eina_List *pending; /* List of devices need to refeed *UP event */
260 Eina_List *touched; /* Information of touched devices */
262 Eina_Bool repeat_events : 1;
264 typedef struct _Widget_Data Widget_Data;
266 static const char *widtype = NULL;
267 static void _del_hook(Evas_Object *obj);
269 static Eina_Bool _event_history_clear(Evas_Object *obj);
270 static void _reset_states(Widget_Data *wd);
271 static void _key_down_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
272 static void _key_up_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
273 static void _zoom_with_wheel_test(Evas_Object *obj, void *event_info, Evas_Callback_Type event_type, Elm_Gesture_Type g_type);
274 static void _mouse_wheel(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
275 static void _mouse_down(void *data, Evas *e, Evas_Object *obj, void *event_info);
276 static void _mouse_move(void *data, Evas *e, Evas_Object *obj, void *event_info);
277 static void _mouse_up(void *data, Evas *e, Evas_Object *obj, void *event_info);
279 static void _multi_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
280 static void _multi_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
281 static void _multi_up(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info);
283 /* START - Functions to manage touched-device list */
286 * This function is used to find if device is touched
288 * @ingroup Elm_Gesture_Layer
291 compare_device(const void *data1, const void *data2)
292 { /* Compare the two device numbers */
293 return (((Pointer_Event *) data1)->device -((Pointer_Event *) data2)->device);
299 * Remove Pointer Event from touched device list
300 * @param list Pointer to touched device list.
301 * @param Pointer_Event Pointer to PE.
303 * @ingroup Elm_Gesture_Layer
306 _remove_touched_device(Eina_List *list, Pointer_Event *pe)
308 Eina_List *lst = NULL;
309 Pointer_Event *p = eina_list_search_unsorted(list, compare_device, pe);
312 lst = eina_list_remove(list, p);
323 * Recoed Pointer Event in touched device list
324 * Note: This fuction allocates memory for PE event
325 * This memory is released in _remove_touched_device()
326 * @param list Pointer to touched device list.
327 * @param Pointer_Event Pointer to PE.
329 * @ingroup Elm_Gesture_Layer
332 _add_touched_device(Eina_List *list, Pointer_Event *pe)
334 Pointer_Event *p = eina_list_search_unsorted(list, compare_device, pe);
336 { /* We like to track device touch-position, overwrite info */
337 memcpy(p, pe, sizeof(Pointer_Event));
341 if ((pe->event_type == EVAS_CALLBACK_MOUSE_DOWN) ||
342 (pe->event_type == EVAS_CALLBACK_MULTI_DOWN))
343 { /* Add touched device on DOWN event only */
344 p = malloc(sizeof(Pointer_Event));
345 /* Freed in _remove_touched_device() */
346 memcpy(p, pe, sizeof(Pointer_Event));
347 return eina_list_append(list, p);
352 /* END - Functions to manage touched-device list */
358 * @param event_info pointer to event.
360 * @ingroup Elm_Gesture_Layer
362 static Evas_Event_Flags
363 _get_event_flag(void *event_info, Evas_Callback_Type event_type)
367 case EVAS_CALLBACK_MOUSE_IN:
368 return ((Evas_Event_Mouse_In *) event_info)->event_flags;
369 case EVAS_CALLBACK_MOUSE_OUT:
370 return ((Evas_Event_Mouse_Out *) event_info)->event_flags;
371 case EVAS_CALLBACK_MOUSE_DOWN:
372 return ((Evas_Event_Mouse_Down *) event_info)->event_flags;
373 case EVAS_CALLBACK_MOUSE_MOVE:
374 return ((Evas_Event_Mouse_Move *) event_info)->event_flags;
375 case EVAS_CALLBACK_MOUSE_UP:
376 return ((Evas_Event_Mouse_Up *) event_info)->event_flags;
377 case EVAS_CALLBACK_MOUSE_WHEEL:
378 return ((Evas_Event_Mouse_Wheel *) event_info)->event_flags;
379 case EVAS_CALLBACK_MULTI_DOWN:
380 return ((Evas_Event_Multi_Down *) event_info)->event_flags;
381 case EVAS_CALLBACK_MULTI_MOVE:
382 return ((Evas_Event_Multi_Move *) event_info)->event_flags;
383 case EVAS_CALLBACK_MULTI_UP:
384 return ((Evas_Event_Multi_Up *) event_info)->event_flags;
385 case EVAS_CALLBACK_KEY_DOWN:
386 return ((Evas_Event_Key_Down *) event_info)->event_flags;
387 case EVAS_CALLBACK_KEY_UP:
388 return ((Evas_Event_Key_Up *) event_info)->event_flags;
390 return EVAS_EVENT_FLAG_NONE;
397 * Sets event flag to value returned from user callback
398 * @param wd Widget Data
399 * @param event_info pointer to event.
400 * @param event_type what type was ev (mouse down, etc...)
401 * @param ev_flags event flags
403 * @ingroup Elm_Gesture_Layer
406 consume_event(Widget_Data *wd, void *event_info,
407 Evas_Callback_Type event_type, Evas_Event_Flags ev_flags)
408 { /* Mark EVAS_EVENT_FLAG_ON_HOLD on events that are used by gesture layer */
409 /* ev_flags != EVAS_EVENT_FLAG_NONE means target used event and g-layer */
410 /* should not refeed this event. */
412 return; /* This happens when restarting gestures */
414 if ((ev_flags) || (!wd->repeat_events))
418 case EVAS_CALLBACK_MOUSE_DOWN:
419 ((Evas_Event_Mouse_Down *) event_info)->event_flags |= ev_flags;
421 case EVAS_CALLBACK_MOUSE_MOVE:
422 ((Evas_Event_Mouse_Move *) event_info)->event_flags |= ev_flags;
424 case EVAS_CALLBACK_MOUSE_UP:
425 ((Evas_Event_Mouse_Up *) event_info)->event_flags |= ev_flags;
427 case EVAS_CALLBACK_MOUSE_WHEEL:
428 ((Evas_Event_Mouse_Wheel *) event_info)->event_flags |= ev_flags;
430 case EVAS_CALLBACK_MULTI_DOWN:
431 ((Evas_Event_Multi_Down *) event_info)->event_flags |= ev_flags;
433 case EVAS_CALLBACK_MULTI_MOVE:
434 ((Evas_Event_Multi_Move *) event_info)->event_flags |= ev_flags;
436 case EVAS_CALLBACK_MULTI_UP:
437 ((Evas_Event_Multi_Up *) event_info)->event_flags |= ev_flags;
439 case EVAS_CALLBACK_KEY_DOWN:
440 ((Evas_Event_Key_Down *) event_info)->event_flags |= ev_flags;
442 case EVAS_CALLBACK_KEY_UP:
443 ((Evas_Event_Key_Up *) event_info)->event_flags |= ev_flags;
454 * Report current state of a gesture by calling user callback.
455 * @param gesture what gesture state we report.
456 * @param info inforamtion for user callback
458 * @ingroup Elm_Gesture_Layer
460 static Evas_Event_Flags
461 _report_state(Gesture_Info *gesture, void *info)
462 { /* We report current state (START, MOVE, END, ABORT), once */
463 #if defined(DEBUG_GESTURE_LAYER)
464 printf("%s reporting gesture=<%d> state=<%d>\n" , __func__, gesture->g_type,
467 if ((gesture->state != ELM_GESTURE_STATE_UNDEFINED) &&
468 (gesture->fn[gesture->state].cb))
469 { /* Fill state-info struct and send ptr to user callback */
470 return gesture->fn[gesture->state].cb(
471 gesture->fn[gesture->state].user_data, info);
474 return EVAS_EVENT_FLAG_NONE;
480 * Update state for a given gesture.
481 * We may update gesture state to:
482 * UNDEFINED - current input did not start gesure yet.
483 * START - gesture started according to input.
484 * MOVE - gusture in progress.
485 * END - gesture completed according to input.
486 * ABORT - input does not matches gesure.
487 * note that we may move from UNDEFINED to ABORT
488 * because we may detect that gesture will not START
489 * with a given input.
491 * @param g given gesture to change state.
492 * @param s gesure new state.
493 * @param info buffer to be sent to user callback on report_state.
494 * @param force makes report_state to report the new-state even
495 * if its same as current state. Works for MOVE - gesture in progress.
497 * @ingroup Elm_Gesture_Layer
499 static Evas_Event_Flags
500 _set_state(Gesture_Info *g, Elm_Gesture_State s,
501 void *info, Eina_Bool force)
503 Elm_Gesture_State old_state;
504 if ((g->state == s) && (!force))
505 return EVAS_EVENT_FLAG_NONE;
507 old_state = g->state;
510 g->info = info; /* Information for user callback */
511 if ((g->state == ELM_GESTURE_STATE_ABORT) ||
512 (g->state == ELM_GESTURE_STATE_END))
513 g->test = EINA_FALSE;
515 if ((g->state != ELM_GESTURE_STATE_UNDEFINED) &&
516 (!((old_state == ELM_GESTURE_STATE_UNDEFINED) &&
517 (s == ELM_GESTURE_STATE_ABORT))))
518 return _report_state(g, g->info);
520 return EVAS_EVENT_FLAG_NONE;
526 * This resets all gesture states and sets test-bit.
527 * this is used for restarting gestures to listen to input.
528 * happens after we complete a gesture or no gesture was detected.
529 * @param wd Widget data of the gesture-layer object.
531 * @ingroup Elm_Gesture_Layer
534 _reset_states(Widget_Data *wd)
538 for (i = ELM_GESTURE_FIRST; i < ELM_GESTURE_LAST; i++)
543 _set_state(p, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
552 * if gesture was NOT detected AND we only have gestures in ABORT state
553 * we clear history immediately to be ready for input.
555 * @param obj The gesture-layer object.
556 * @return TRUE on event history_clear
558 * @ingroup Elm_Gesture_Layer
561 _clear_if_finished(Evas_Object *obj)
563 Widget_Data *wd = elm_widget_data_get(obj);
564 if (!wd) return EINA_FALSE;
567 /* Clear history if all we have aborted gestures */
568 Eina_Bool reset_s = EINA_TRUE, all_undefined = EINA_TRUE;
569 for (i = ELM_GESTURE_FIRST; i < ELM_GESTURE_LAST; i++)
570 { /* If no gesture started and all we have aborted gestures, reset all */
571 Gesture_Info *p = wd->gesture[i];
572 if ((p) && (p->state != ELM_GESTURE_STATE_UNDEFINED))
574 if ((p->state == ELM_GESTURE_STATE_START) ||
575 (p->state == ELM_GESTURE_STATE_MOVE))
576 reset_s = EINA_FALSE;
578 all_undefined = EINA_FALSE;
582 if (reset_s && (!all_undefined))
583 return _event_history_clear(obj);
589 _inside(Evas_Coord xx1, Evas_Coord yy1, Evas_Coord xx2, Evas_Coord yy2)
591 int w = _elm_config->finger_size >> 1; /* Finger size devided by 2 */
607 /* All *test_reset() funcs are called to clear
608 * gesture intermediate data.
609 * This happens when we need to reset our tests.
610 * for example when gesture is detected or all ABORTed. */
612 _tap_gestures_test_reset(Gesture_Info *gesture)
617 Widget_Data *wd = elm_widget_data_get(gesture->obj);
618 wd->dbl_timeout = NULL;
625 EINA_LIST_FREE(((Taps_Type *) gesture->data)->l, data)
626 EINA_LIST_FREE(data, pe)
629 memset(gesture->data, 0, sizeof(Taps_Type));
632 /* All *test_reset() funcs are called to clear
633 * gesture intermediate data.
634 * This happens when we need to reset our tests.
635 * for example when gesture is detected or all ABORTed. */
637 _n_long_tap_test_reset(Gesture_Info *gesture)
645 Long_Tap_Type *st = gesture->data;
648 EINA_LIST_FOREACH(st->touched, l, p)
651 eina_list_free(st->touched);
654 ecore_timer_del(st->timeout);
657 memset(gesture->data, 0, sizeof(Long_Tap_Type));
661 _momentum_test_reset(Gesture_Info *gesture)
669 memset(gesture->data, 0, sizeof(Momentum_Type));
673 _line_data_reset(Line_Data *st)
678 memset(st, 0, sizeof(Line_Data));
679 st->line_angle = ELM_GESTURE_NEGATIVE_ANGLE;
683 _line_test_reset(Gesture_Info *gesture)
691 Line_Type *st = gesture->data;
692 Eina_List *list = st->list;
695 EINA_LIST_FOREACH(list, l, t_line)
698 eina_list_free(list);
703 _zoom_test_reset(Gesture_Info *gesture)
711 Widget_Data *wd = elm_widget_data_get(gesture->obj);
712 Zoom_Type *st = gesture->data;
713 Evas_Modifier_Mask mask = evas_key_modifier_mask_get(
714 evas_object_evas_get(wd->target), "Control");
715 evas_object_key_ungrab(wd->target, "Control_L", mask, 0);
716 evas_object_key_ungrab(wd->target, "Control_R", mask, 0);
718 memset(st, 0, sizeof(Zoom_Type));
719 st->zoom_distance_tolerance = wd->zoom_distance_tolerance;
724 _rotate_test_reset(Gesture_Info *gesture)
732 Widget_Data *wd = elm_widget_data_get(gesture->obj);
733 Rotate_Type *st = gesture->data;
735 memset(st, 0, sizeof(Rotate_Type));
736 st->info.base_angle = ELM_GESTURE_NEGATIVE_ANGLE;
737 st->rotate_angular_tolerance = wd->rotate_angular_tolerance;
744 * We register callbacks when gesture layer is attached to an object
745 * or when its enabled after disable.
747 * @param obj The gesture-layer object.
749 * @ingroup Elm_Gesture_Layer
752 _register_callbacks(Evas_Object *obj)
754 Widget_Data *wd = elm_widget_data_get(obj);
759 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MOUSE_DOWN,
761 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MOUSE_MOVE,
763 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MOUSE_UP,
766 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MOUSE_WHEEL,
769 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MULTI_DOWN,
771 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MULTI_MOVE,
773 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MULTI_UP,
776 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_KEY_DOWN,
778 evas_object_event_callback_add(wd->target, EVAS_CALLBACK_KEY_UP,
786 * We unregister callbacks when gesture layer is disabled.
788 * @param obj The gesture-layer object.
790 * @ingroup Elm_Gesture_Layer
793 _unregister_callbacks(Evas_Object *obj)
795 Widget_Data *wd = elm_widget_data_get(obj);
800 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MOUSE_DOWN,
802 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MOUSE_MOVE,
804 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MOUSE_UP,
807 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MOUSE_WHEEL,
810 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MULTI_DOWN,
813 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MULTI_MOVE,
816 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_MULTI_UP,
819 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_KEY_DOWN,
821 evas_object_event_callback_del(wd->target, EVAS_CALLBACK_KEY_UP,
826 /* START - Event history list handling functions */
829 * This function is used to find if device number
830 * is found in a list of devices.
831 * The list contains devices for refeeding *UP event
833 * @ingroup Elm_Gesture_Layer
836 device_in_pending_list(const void *data1, const void *data2)
837 { /* Compare the two device numbers */
838 return (((intptr_t) data1) - ((intptr_t) data2));
844 * This functions adds device to refeed-pending device list
845 * @ingroup Elm_Gesture_Layer
848 _add_device_pending(Eina_List *list, void *event, Evas_Callback_Type event_type)
850 int device = ELM_MOUSE_DEVICE;
853 case EVAS_CALLBACK_MOUSE_DOWN:
855 case EVAS_CALLBACK_MULTI_DOWN:
856 device = ((Evas_Event_Multi_Down *) event)->device;
862 if (!eina_list_search_unsorted_list(list, device_in_pending_list,
863 (void *)(intptr_t)device))
865 return eina_list_append(list, (void *)(intptr_t)device);
874 * This functions returns pending-device node
875 * @ingroup Elm_Gesture_Layer
878 _device_is_pending(Eina_List *list, void *event, Evas_Callback_Type event_type)
880 int device = ELM_MOUSE_DEVICE;
883 case EVAS_CALLBACK_MOUSE_UP:
885 case EVAS_CALLBACK_MULTI_UP:
886 device = ((Evas_Event_Multi_Up *) event)->device;
892 return eina_list_search_unsorted_list(list, device_in_pending_list,
893 (void *)(intptr_t)device);
899 * This function reports ABORT to all none-detected gestures
900 * Then resets test bits for all desired gesures
901 * and clears input-events history.
902 * note: if no gesture was detected, events from history list
903 * are streamed to the widget because it's unused by layer.
904 * user may cancel refeed of events by setting repeat events.
906 * @param obj The gesture-layer object.
908 * @ingroup Elm_Gesture_Layer
911 _event_history_clear(Evas_Object *obj)
913 Widget_Data *wd = elm_widget_data_get(obj);
914 if (!wd) return EINA_FALSE;
918 Evas *e = evas_object_evas_get(obj);
919 Eina_Bool gesture_found = EINA_FALSE;
920 for (i = ELM_GESTURE_FIRST; i < ELM_GESTURE_LAST; i++)
925 if (p->state == ELM_GESTURE_STATE_END)
926 gesture_found = EINA_TRUE;
928 { /* Report ABORT to all gestures that still not finished */
929 _set_state(p, ELM_GESTURE_STATE_ABORT, wd->gesture[i]->info,
935 _reset_states(wd); /* we are ready to start testing for gestures again */
937 /* Clear all gestures intermediate data */
938 if (IS_TESTED(ELM_GESTURE_N_LONG_TAPS))
939 { /* We do not clear a long-tap gesture if fingers still on surface */
940 /* and gesture timer still pending to test gesture state */
941 Long_Tap_Type *st = wd->gesture[ELM_GESTURE_N_LONG_TAPS]->data;
942 if ((st) && /* st not allocated if clear occurs before 1st input */
943 ((!eina_list_count(st->touched)) || (!st->timeout)))
944 _n_long_tap_test_reset(wd->gesture[ELM_GESTURE_N_LONG_TAPS]);
949 ecore_timer_del(wd->dbl_timeout);
950 wd->dbl_timeout = NULL;
953 _tap_gestures_test_reset(wd->gesture[ELM_GESTURE_N_TAPS]);
954 _tap_gestures_test_reset(wd->gesture[ELM_GESTURE_N_DOUBLE_TAPS]);
955 _tap_gestures_test_reset(wd->gesture[ELM_GESTURE_N_TRIPLE_TAPS]);
956 _momentum_test_reset(wd->gesture[ELM_GESTURE_MOMENTUM]);
957 _line_test_reset(wd->gesture[ELM_GESTURE_N_LINES]);
958 _line_test_reset(wd->gesture[ELM_GESTURE_N_FLICKS]);
959 _zoom_test_reset(wd->gesture[ELM_GESTURE_ZOOM]);
960 _rotate_test_reset(wd->gesture[ELM_GESTURE_ROTATE]);
962 /* Disable gesture layer so refeeded events won't be consumed by it */
963 _unregister_callbacks(obj);
964 while (wd->event_history_list)
967 t = wd->event_history_list;
968 Eina_List *pending = _device_is_pending(wd->pending,
969 wd->event_history_list->event,
970 wd->event_history_list->event_type);
972 /* Refeed events if no gesture matched input */
973 if (pending || ((!gesture_found) && (!wd->repeat_events)))
975 evas_event_refeed_event(e, wd->event_history_list->event,
976 wd->event_history_list->event_type);
980 wd->pending = eina_list_remove_list(wd->pending, pending);
984 wd->pending = _add_device_pending(wd->pending,
985 wd->event_history_list->event,
986 wd->event_history_list->event_type);
990 free(wd->event_history_list->event);
991 wd->event_history_list = (Event_History *) eina_inlist_remove(
992 EINA_INLIST_GET(wd->event_history_list),
993 EINA_INLIST_GET(wd->event_history_list));
996 _register_callbacks(obj);
1003 * This function copies input events.
1004 * We copy event info before adding it to history.
1005 * The memory is freed when we clear history.
1007 * @param event the event to copy
1008 * @param event_type event type to copy
1010 * @ingroup Elm_Gesture_Layer
1013 _copy_event_info(void *event, Evas_Callback_Type event_type)
1017 case EVAS_CALLBACK_MOUSE_DOWN:
1018 return COPY_EVENT_INFO((Evas_Event_Mouse_Down *) event);
1020 case EVAS_CALLBACK_MOUSE_MOVE:
1021 return COPY_EVENT_INFO((Evas_Event_Mouse_Move *) event);
1023 case EVAS_CALLBACK_MOUSE_UP:
1024 return COPY_EVENT_INFO((Evas_Event_Mouse_Up *) event);
1026 case EVAS_CALLBACK_MOUSE_WHEEL:
1027 return COPY_EVENT_INFO((Evas_Event_Mouse_Wheel *) event);
1029 case EVAS_CALLBACK_MULTI_DOWN:
1030 return COPY_EVENT_INFO((Evas_Event_Multi_Down *) event);
1032 case EVAS_CALLBACK_MULTI_MOVE:
1033 return COPY_EVENT_INFO((Evas_Event_Multi_Move *) event);
1035 case EVAS_CALLBACK_MULTI_UP:
1036 return COPY_EVENT_INFO((Evas_Event_Multi_Up *) event);
1038 case EVAS_CALLBACK_KEY_DOWN:
1039 return COPY_EVENT_INFO((Evas_Event_Key_Down *) event);
1041 case EVAS_CALLBACK_KEY_UP:
1042 return COPY_EVENT_INFO((Evas_Event_Key_Up *) event);
1050 _event_history_add(Evas_Object *obj, void *event, Evas_Callback_Type event_type)
1052 Widget_Data *wd = elm_widget_data_get(obj);
1054 if (!wd) return EINA_FALSE;
1056 ev = malloc(sizeof(Event_History));
1057 ev->event = _copy_event_info(event, event_type); /* Freed on event_history_clear */
1058 ev->event_type = event_type;
1059 wd->event_history_list = (Event_History *) eina_inlist_append(
1060 EINA_INLIST_GET(wd->event_history_list), EINA_INLIST_GET(ev));
1064 /* END - Event history list handling functions */
1067 _del_hook(Evas_Object *obj)
1069 Widget_Data *wd = elm_widget_data_get(obj);
1072 _event_history_clear(obj);
1073 eina_list_free(wd->pending);
1075 Pointer_Event *data;
1076 EINA_LIST_FREE(wd->touched, data)
1079 if (!elm_widget_disabled_get(obj))
1080 _unregister_callbacks(obj);
1082 /* Free all gestures internal data structures */
1084 for (i = 0; i < ELM_GESTURE_LAST; i++)
1087 if (wd->gesture[i]->data)
1088 free(wd->gesture[i]->data);
1090 free(wd->gesture[i]);
1097 compare_match_fingers(const void *data1, const void *data2)
1098 { /* Compare coords of first item in list to cur coords */
1099 const Pointer_Event *pe1 = eina_list_data_get(data1);
1100 const Pointer_Event *pe2 = data2;
1102 if (_inside(pe1->x, pe1->y, pe2->x, pe2->y))
1104 else if (pe1->x < pe2->x)
1108 if (pe1->x == pe2->x)
1109 return pe1->y - pe2->y;
1116 compare_pe_device(const void *data1, const void *data2)
1117 { /* Compare device of first item in list to our pe device */
1118 const Pointer_Event *pe1 = eina_list_data_get(data1);
1119 const Pointer_Event *pe2 = data2;
1121 /* Only match if last was a down event */
1122 if ((pe1->event_type != EVAS_CALLBACK_MULTI_DOWN) &&
1123 (pe1->event_type != EVAS_CALLBACK_MOUSE_DOWN))
1126 if (pe1->device == pe2->device)
1128 else if (pe1->device < pe2->device)
1135 _record_pointer_event(Taps_Type *st, Eina_List *pe_list, Pointer_Event *pe,
1136 Widget_Data *wd, void *event_info, Evas_Callback_Type event_type)
1137 { /* Keep copy of pe and record it in list */
1138 Pointer_Event *p = malloc(sizeof(Pointer_Event));
1139 memcpy(p, pe, sizeof(Pointer_Event));
1140 consume_event(wd, event_info, event_type, EVAS_EVENT_FLAG_NONE);
1146 /* This will also update middle-point to report to user later */
1147 st->info.x = st->sum_x / st->n_taps;
1148 st->info.y = st->sum_y / st->n_taps;
1149 st->info.timestamp = pe->timestamp;
1153 pe_list = eina_list_append(pe_list, p);
1154 st->l = eina_list_append(st->l, pe_list);
1157 pe_list = eina_list_append(pe_list, p);
1165 * This function sets state a tap-gesture to END or ABORT
1167 * @param data gesture info pointer
1169 * @ingroup Elm_Gesture_Layer
1172 _tap_gesture_finish(void *data)
1173 { /* This function will test each tap gesture when timer expires */
1174 Gesture_Info *gesture = data;
1175 Elm_Gesture_State s = ELM_GESTURE_STATE_END;
1176 /* Here we check if taps-gesture was completed successfuly */
1177 /* Count how many taps were recieved on each device then */
1178 /* determine if it matches n_taps_needed defined on START */
1179 Taps_Type *st = gesture->data;
1182 EINA_LIST_FOREACH(st->l, l, pe_list)
1184 if (eina_list_count(pe_list) != st->n_taps_needed)
1185 { /* No match taps number on device, ABORT */
1186 s = ELM_GESTURE_STATE_ABORT;
1191 st->info.n = eina_list_count(st->l);
1192 _set_state(gesture, s, gesture->info, EINA_FALSE);
1193 _tap_gestures_test_reset(gesture);
1199 * when this timer expires we finish tap gestures.
1201 * @param data The gesture-layer object.
1202 * @return cancles callback for this timer.
1204 * @ingroup Elm_Gesture_Layer
1207 _multi_tap_timeout(void *data)
1209 Widget_Data *wd = elm_widget_data_get(data);
1210 if (!wd) return EINA_FALSE;
1212 if (IS_TESTED(ELM_GESTURE_N_TAPS))
1213 _tap_gesture_finish(wd->gesture[ELM_GESTURE_N_TAPS]);
1215 if (IS_TESTED(ELM_GESTURE_N_DOUBLE_TAPS))
1216 _tap_gesture_finish(wd->gesture[ELM_GESTURE_N_DOUBLE_TAPS]);
1218 if (IS_TESTED(ELM_GESTURE_N_TRIPLE_TAPS))
1219 _tap_gesture_finish(wd->gesture[ELM_GESTURE_N_TRIPLE_TAPS]);
1221 _clear_if_finished(data);
1222 wd->dbl_timeout = NULL;
1223 return ECORE_CALLBACK_CANCEL;
1229 * when this timer expires we START long tap gesture
1231 * @param data The gesture-layer object.
1232 * @return cancles callback for this timer.
1234 * @ingroup Elm_Gesture_Layer
1237 _long_tap_timeout(void *data)
1239 Gesture_Info *gesture = data;
1240 Long_Tap_Type *st = gesture->data;
1243 _set_state(gesture, ELM_GESTURE_STATE_START,
1244 gesture->data, EINA_FALSE);
1246 return ECORE_CALLBACK_CANCEL;
1253 * This function checks if a tap gesture should start
1255 * @param wd Gesture Layer Widget Data.
1256 * @param pe The recent input event as stored in pe struct.
1257 * @param event_info Original input event pointer.
1258 * @param event_type Type of original input event.
1259 * @param gesture what gesture is tested
1260 * @param how many taps for this gesture (1, 2 or 3)
1262 * @return Flag to determine if we need to set a timer for finish
1264 * @ingroup Elm_Gesture_Layer
1267 _tap_gesture_start(Widget_Data *wd, Pointer_Event *pe,
1268 void *event_info, Evas_Callback_Type event_type,
1269 Gesture_Info *gesture, int taps)
1270 { /* Here we fill Tap struct */
1271 Taps_Type *st = gesture->data;
1273 { /* Allocated once on first time */
1274 st = calloc(1, sizeof(Taps_Type));
1276 _tap_gestures_test_reset(gesture);
1279 Eina_List *pe_list = NULL;
1280 Pointer_Event *pe_down = NULL;
1281 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
1282 switch (pe->event_type)
1284 case EVAS_CALLBACK_MULTI_DOWN:
1285 case EVAS_CALLBACK_MOUSE_DOWN:
1286 /* Check if got tap on same cord was tapped before */
1287 pe_list = eina_list_search_unsorted(st->l, compare_match_fingers, pe);
1290 eina_list_search_unsorted(st->l, compare_pe_device, pe))
1291 { /* This device was touched in other cord before completion */
1292 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT,
1293 &st->info, EINA_FALSE);
1294 consume_event(wd, event_info, event_type, ev_flag);
1299 pe_list = _record_pointer_event(st, pe_list, pe, wd, event_info, event_type);
1300 if ((pe->device == 0) && (eina_list_count(pe_list) == 1))
1301 { /* This is the first mouse down we got */
1302 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_START,
1303 &st->info, EINA_FALSE);
1304 consume_event(wd, event_info, event_type, ev_flag);
1306 st->n_taps_needed = taps * 2; /* count DOWN and UP */
1313 case EVAS_CALLBACK_MULTI_UP:
1314 case EVAS_CALLBACK_MOUSE_UP:
1315 pe_list = eina_list_search_unsorted(st->l, compare_pe_device, pe);
1319 pe_list = _record_pointer_event(st, pe_list, pe, wd, event_info, event_type);
1322 case EVAS_CALLBACK_MULTI_MOVE:
1323 case EVAS_CALLBACK_MOUSE_MOVE:
1324 /* Get first event in first list, this has to be a Mouse Down event */
1325 /* and verify that user didn't move out of this area before next tap */
1326 pe_list = eina_list_search_unsorted(st->l, compare_pe_device, pe);
1329 pe_down = eina_list_data_get(pe_list);
1330 if (!_inside(pe_down->x, pe_down->y, pe->x, pe->y))
1332 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT,
1333 &st->info, EINA_FALSE);
1334 consume_event(wd, event_info, event_type, ev_flag);
1350 * This function checks all click/tap and double/triple taps
1352 * @param obj The gesture-layer object.
1353 * @param pe The recent input event as stored in pe struct.
1354 * @param event_info Original input event pointer.
1355 * @param event_type Type of original input event.
1357 * @ingroup Elm_Gesture_Layer
1360 _tap_gestures_test(Evas_Object *obj, Pointer_Event *pe,
1361 void *event_info, Evas_Callback_Type event_type)
1362 { /* Here we fill Recent_Taps struct and fire-up click/tap timers */
1363 Eina_Bool need_timer = EINA_FALSE;
1364 Widget_Data *wd = elm_widget_data_get(obj);
1367 if (!pe) /* this happens when unhandled event arrived */
1368 return; /* see _make_pointer_event function */
1370 if (IS_TESTED(ELM_GESTURE_N_TAPS))
1371 need_timer |= _tap_gesture_start(wd, pe, event_info, event_type,
1372 wd->gesture[ELM_GESTURE_N_TAPS], 1);
1374 if (IS_TESTED(ELM_GESTURE_N_DOUBLE_TAPS))
1375 need_timer |= _tap_gesture_start(wd, pe, event_info, event_type,
1376 wd->gesture[ELM_GESTURE_N_DOUBLE_TAPS], 2);
1378 if (IS_TESTED(ELM_GESTURE_N_TRIPLE_TAPS))
1379 need_timer |= _tap_gesture_start(wd, pe, event_info, event_type,
1380 wd->gesture[ELM_GESTURE_N_TRIPLE_TAPS], 3);
1382 if ((need_timer) && (!wd->dbl_timeout))
1383 { /* Set a timer to finish these gestures */
1384 wd->dbl_timeout = ecore_timer_add(0.4, _multi_tap_timeout,
1392 * This function computes center-point for long-tap gesture
1394 * @param st Long Tap gesture info pointer
1395 * @param pe The recent input event as stored in pe struct.
1397 * @ingroup Elm_Gesture_Layer
1400 _compute_taps_center(Long_Tap_Type *st,
1401 Evas_Coord *x_out, Evas_Coord *y_out, Pointer_Event *pe)
1403 if(!eina_list_count(st->touched))
1408 Evas_Coord x = 0, y = 0;
1409 EINA_LIST_FOREACH(st->touched, l, p)
1410 { /* Accumulate all then take avarage */
1411 if (p->device == pe->device)
1412 { /* This will take care of values coming from MOVE event */
1423 *x_out = x / eina_list_count(st->touched);
1424 *y_out = y / eina_list_count(st->touched);
1430 * This function checks N long-tap gesture.
1432 * @param obj The gesture-layer object.
1433 * @param pe The recent input event as stored in pe struct.
1434 * @param event_info Original input event pointer.
1435 * @param event_type Type of original input event.
1436 * @param g_type what Gesture we are testing.
1437 * @param taps How many click/taps we test for.
1439 * @ingroup Elm_Gesture_Layer
1442 _n_long_tap_test(Evas_Object *obj, Pointer_Event *pe,
1443 void *event_info, Evas_Callback_Type event_type,
1444 Elm_Gesture_Type g_type)
1445 { /* Here we fill Recent_Taps struct and fire-up click/tap timers */
1446 Widget_Data *wd = elm_widget_data_get(obj);
1449 if (!pe) /* this happens when unhandled event arrived */
1450 return; /* see _make_pointer_event function */
1451 Gesture_Info *gesture = wd->gesture[g_type];
1452 if (!gesture) return;
1454 Long_Tap_Type *st = gesture->data;
1456 { /* Allocated once on first time */
1457 st = calloc(1, sizeof(Long_Tap_Type));
1459 _n_long_tap_test_reset(gesture);
1462 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
1463 switch (pe->event_type)
1465 case EVAS_CALLBACK_MULTI_DOWN:
1466 case EVAS_CALLBACK_MOUSE_DOWN:
1467 st->touched = _add_touched_device(st->touched, pe);
1468 st->info.n = eina_list_count(st->touched);
1469 if (st->info.n > st->max_touched)
1470 st->max_touched = st->info.n;
1472 { /* User removed finger from touch, then put back - ABORT */
1473 if ((gesture->state == ELM_GESTURE_STATE_START) ||
1474 (gesture->state == ELM_GESTURE_STATE_MOVE))
1476 ev_flag =_set_state(gesture, ELM_GESTURE_STATE_ABORT,
1477 &st->info, EINA_FALSE);
1478 consume_event(wd, event_info, event_type, ev_flag);
1482 if ((pe->device == 0) && (eina_list_count(st->touched) == 1))
1483 { /* This is the first mouse down we got */
1484 st->info.timestamp = pe->timestamp;
1486 /* To test long tap */
1487 /* When this timer expires, gesture STARTED */
1489 st->timeout = ecore_timer_add(wd->long_tap_start_timeout,
1490 _long_tap_timeout, gesture);
1493 consume_event(wd, event_info, event_type, ev_flag);
1494 _compute_taps_center(st, &st->info.x, &st->info.y, pe);
1495 st->center_x = st->info.x;
1496 st->center_y = st->info.y;
1499 case EVAS_CALLBACK_MULTI_UP:
1500 case EVAS_CALLBACK_MOUSE_UP:
1501 st->touched = _remove_touched_device(st->touched, pe);
1502 _compute_taps_center(st, &st->center_x, &st->center_y, pe);
1504 ((gesture->state == ELM_GESTURE_STATE_START) ||
1505 (gesture->state == ELM_GESTURE_STATE_MOVE)))
1506 { /* Report END only for gesture that STARTed */
1507 if (eina_list_count(st->touched) == 0)
1508 { /* Report END only at last release event */
1509 ev_flag =_set_state(gesture, ELM_GESTURE_STATE_END,
1510 &st->info, EINA_FALSE);
1511 consume_event(wd, event_info, event_type, ev_flag);
1515 { /* Stop test, user lifts finger before long-start */
1516 if (st->timeout) ecore_timer_del(st->timeout);
1518 ev_flag =_set_state(gesture, ELM_GESTURE_STATE_ABORT,
1519 &st->info, EINA_FALSE);
1520 consume_event(wd, event_info, event_type, ev_flag);
1525 case EVAS_CALLBACK_MULTI_MOVE:
1526 case EVAS_CALLBACK_MOUSE_MOVE:
1528 ((gesture->state == ELM_GESTURE_STATE_START) ||
1529 (gesture->state == ELM_GESTURE_STATE_MOVE)))
1530 { /* Report MOVE only if STARTED */
1533 Elm_Gesture_State state_to_report = ELM_GESTURE_STATE_MOVE;
1535 _compute_taps_center(st, &x, &y, pe);
1536 /* ABORT if user moved fingers out of tap area */
1537 #if defined(DEBUG_GESTURE_LAYER)
1538 printf("%s x,y=(%d,%d) st->info.x,st->info.y=(%d,%d)\n",__func__,x,y,st->info.x,st->info.y);
1540 if (!_inside(x, y, st->center_x, st->center_y))
1541 state_to_report = ELM_GESTURE_STATE_ABORT;
1543 /* Report MOVE if gesture started */
1544 ev_flag = _set_state(gesture, state_to_report,
1545 &st->info, EINA_TRUE);
1546 consume_event(wd, event_info, event_type, ev_flag);
1558 * This function computes momentum for MOMENTUM, LINE and FLICK gestures
1559 * This momentum value will be sent to widget when gesture is completed.
1561 * @param momentum pointer to buffer where we record momentum value.
1562 * @param x1 x coord where user started gesture.
1563 * @param y1 y coord where user started gesture.
1564 * @param x2 x coord where user completed gesture.
1565 * @param y2 y coord where user completed gesture.
1566 * @param t1x timestamp for X, when user started gesture.
1567 * @param t1y timestamp for Y, when user started gesture.
1568 * @param t2 timestamp when user completed gesture.
1570 * @ingroup Elm_Gesture_Layer
1573 _set_momentum(Elm_Gesture_Momentum_Info *momentum,
1574 Evas_Coord xx1, Evas_Coord yy1,
1575 Evas_Coord xx2, Evas_Coord yy2,
1576 unsigned int t1x, unsigned int t1y, unsigned int t2)
1578 Evas_Coord velx = 0, vely = 0, vel;
1579 Evas_Coord dx = xx2 - xx1;
1580 Evas_Coord dy = yy2 - yy1;
1584 velx = (dx * 1000) / dtx;
1587 vely = (dy * 1000) / dty;
1589 vel = sqrt((velx * velx) + (vely * vely));
1591 if ((_elm_config->thumbscroll_friction > 0.0) &&
1592 (vel > _elm_config->thumbscroll_momentum_threshold))
1593 { /* report momentum */
1594 momentum->mx = velx;
1595 momentum->my = vely;
1607 * This function is used for computing rotation angle (DEG).
1609 * @param x1 first finger x location.
1610 * @param y1 first finger y location.
1611 * @param x2 second finger x location.
1612 * @param y2 second finger y location.
1614 * @return angle of the line between (x1,y1), (x2,y2) in Deg.
1615 * Angles now are given in DEG, not RAD.
1616 * ZERO angle at 12-oclock, growing clockwise.
1618 * @ingroup Elm_Gesture_Layer
1621 get_angle(Evas_Coord xx1, Evas_Coord yy1, Evas_Coord xx2, Evas_Coord yy2)
1623 double a, xx, yy, rt = (-1);
1624 xx = fabs(xx2 - xx1);
1625 yy = fabs(yy2 - yy1);
1627 if (((int)xx) && ((int)yy))
1629 rt = a = RAD2DEG(atan(yy / xx));
1632 if (yy1 < yy2) rt = 360 - a;
1637 if (yy1 < yy2) rt = 180 + a;
1643 { /* Do this only if rt is not set */
1645 { /* Horizontal line */
1646 if (xx2 < xx1) rt = 180;
1650 { /* Vertical line */
1651 if (yy2 < yy1) rt = 90;
1656 /* Now we want to change from:
1658 * original circle 180 0 We want: 270 90
1662 if (rt >= 360) rt -= 360;
1670 * This function is used for computing the magnitude and direction
1671 * of vector between two points.
1673 * @param x1 first finger x location.
1674 * @param y1 first finger y location.
1675 * @param x2 second finger x location.
1676 * @param y2 second finger y location.
1677 * @param l length computed (output)
1678 * @param a angle computed (output)
1680 * @ingroup Elm_Gesture_Layer
1683 get_vector(Evas_Coord xx1, Evas_Coord yy1, Evas_Coord xx2, Evas_Coord yy2,
1684 Evas_Coord *l, double *a)
1689 *l = (Evas_Coord) sqrt((xx * xx) + (yy * yy));
1690 *a = get_angle(xx1, yy1, xx2, yy2);
1694 _get_direction(Evas_Coord xx1, Evas_Coord xx2)
1696 if (xx2 < xx1) return -1;
1697 if (xx2 > xx1) return 1;
1703 * This function tests momentum gesture.
1704 * @param obj The gesture-layer object.
1705 * @param pe The recent input event as stored in pe struct.
1706 * @param event_info recent input event.
1707 * @param event_type recent event type.
1708 * @param g_type what Gesture we are testing.
1710 * @ingroup Elm_Gesture_Layer
1713 _momentum_test(Evas_Object *obj, Pointer_Event *pe,
1714 void *event_info, Evas_Callback_Type event_type,
1715 Elm_Gesture_Type g_type)
1717 Widget_Data *wd = elm_widget_data_get(obj);
1719 Gesture_Info *gesture = wd->gesture[g_type];
1720 if (!gesture ) return;
1722 /* When continues enable = TRUE a gesture may START on MOVE event */
1723 /* We don't allow this to happen with the if-statement below. */
1724 /* When continues enable = FALSE a gesture may START on DOWN only */
1725 /* Therefor it would NOT start on MOVE event. */
1726 /* NOTE that touched list is updated AFTER this function returns */
1727 /* so (count == 0) when we get here on first touch on surface. */
1728 if ((wd->glayer_continues_enable) && (!eina_list_count(wd->touched)))
1729 return; /* Got move on mouse-over move */
1731 Momentum_Type *st = gesture->data;
1732 Elm_Gesture_State state_to_report = ELM_GESTURE_STATE_MOVE;
1734 { /* Allocated once on first time */
1735 st = calloc(1, sizeof(Momentum_Type));
1737 _momentum_test_reset(gesture);
1743 /* First make avarage of all touched devices to determine center point */
1746 Pointer_Event pe_local = *pe; /* Copy pe event info to local */
1747 unsigned int cnt = 1; /* We start counter counting current pe event */
1748 EINA_LIST_FOREACH(wd->touched, l, p)
1749 if (p->device != pe_local.device)
1757 /* Compute avarage to get center point */
1761 /* If user added finger - reset gesture */
1762 if ((st->info.n) && (st->info.n < cnt))
1763 state_to_report = ELM_GESTURE_STATE_ABORT;
1766 if (st->info.n < cnt)
1769 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
1772 case EVAS_CALLBACK_MOUSE_DOWN:
1773 case EVAS_CALLBACK_MULTI_DOWN:
1774 case EVAS_CALLBACK_MOUSE_MOVE:
1775 case EVAS_CALLBACK_MULTI_MOVE:
1778 if ((event_type == EVAS_CALLBACK_MOUSE_DOWN) ||
1779 (event_type == EVAS_CALLBACK_MULTI_DOWN) ||
1780 (wd->glayer_continues_enable)) /* start also on MOVE */
1781 { /* We start on MOVE when cont-enabled only */
1782 st->line_st.x = st->line_end.x = pe_local.x;
1783 st->line_st.y = st->line_end.y = pe_local.y;
1784 st->t_st_x = st->t_st_y = st->t_end = pe_local.timestamp;
1785 st->xdir = st->ydir = 0;
1786 st->info.x2 = st->info.x1 = pe_local.x;
1787 st->info.y2 = st->info.y1 = pe_local.y;
1788 st->info.tx = st->info.ty = pe_local.timestamp;
1789 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_START,
1790 &st->info, EINA_FALSE);
1791 consume_event(wd, event_info, event_type, ev_flag);
1800 Eina_Bool force = EINA_TRUE; /* for move state */
1801 if ((st->t_up + ELM_GESTURE_MULTI_TIMEOUT) < pe_local.timestamp)
1802 { /* ABORT if got DOWN or MOVE event after UP+timeout */
1803 state_to_report = ELM_GESTURE_STATE_ABORT;
1807 /* We report state but don't compute momentum now */
1808 ev_flag = _set_state(gesture, state_to_report, &st->info,
1810 consume_event(wd, event_info, event_type, ev_flag);
1811 return; /* Stop computing when user remove finger */
1814 if ((pe_local.timestamp - ELM_GESTURE_MOMENTUM_TIMEOUT) > st->t_end)
1815 { /* Too long of a wait, reset all values */
1816 st->line_st.x = pe_local.x;
1817 st->line_st.y = pe_local.y;
1818 st->t_st_y = st->t_st_x = pe_local.timestamp;
1819 st->info.tx = st->t_st_x;
1820 st->info.ty = st->t_st_y;
1821 st->xdir = st->ydir = 0;
1826 xdir = _get_direction(st->line_end.x, pe_local.x);
1827 ydir = _get_direction(st->line_end.y, pe_local.y);
1828 if (xdir && (xdir != st->xdir))
1830 st->line_st.x = st->line_end.x;
1831 st->info.tx = st->t_st_x = st->t_end;
1835 if (ydir && (ydir != st->ydir))
1837 st->line_st.y = st->line_end.y;
1838 st->info.ty = st->t_st_y = st->t_end;
1843 st->info.x2 = st->line_end.x = pe_local.x;
1844 st->info.y2 = st->line_end.y = pe_local.y;
1845 st->t_end = pe_local.timestamp;
1846 _set_momentum(&st->info, st->line_st.x, st->line_st.y,
1847 pe_local.x, pe_local.y, st->t_st_x, st->t_st_y,
1848 pe_local.timestamp);
1850 ev_flag = _set_state(gesture, state_to_report, &st->info,
1852 consume_event(wd, event_info, event_type, ev_flag);
1856 case EVAS_CALLBACK_MOUSE_UP:
1857 case EVAS_CALLBACK_MULTI_UP:
1858 st->t_up = pe_local.timestamp; /* Record recent up event time */
1859 if ((cnt > 1) || /* Ignore if more fingers touch surface */
1860 (!st->t_st_x)) /* IGNORE if info was cleared, long press,move */
1863 if ((pe_local.timestamp - ELM_GESTURE_MOMENTUM_TIMEOUT) > st->t_end)
1864 { /* Too long of a wait, reset all values */
1865 st->line_st.x = pe_local.x;
1866 st->line_st.y = pe_local.y;
1867 st->t_st_y = st->t_st_x = pe_local.timestamp;
1868 st->xdir = st->ydir = 0;
1871 st->info.x2 = pe_local.x;
1872 st->info.y2 = pe_local.y;
1873 st->line_end.x = pe_local.x;
1874 st->line_end.y = pe_local.y;
1875 st->t_end = pe_local.timestamp;
1877 if ((fabs(st->info.mx) > ELM_GESTURE_MINIMUM_MOMENTUM) ||
1878 (fabs(st->info.my) > ELM_GESTURE_MINIMUM_MOMENTUM))
1879 state_to_report = ELM_GESTURE_STATE_END;
1881 state_to_report = ELM_GESTURE_STATE_ABORT;
1883 ev_flag = _set_state(gesture, state_to_report, &st->info,
1885 consume_event(wd, event_info, event_type, ev_flag);
1894 compare_line_device(const void *data1, const void *data2)
1895 { /* Compare device component of line struct */
1896 const Line_Data *ln1 = data1;
1897 const int *device = data2;
1899 if (ln1->t_st) /* Compare only with lines that started */
1900 return (ln1->device - (*device));
1908 * This function construct line struct from input.
1909 * @param info pointer to store line momentum.
1910 * @param st line info to store input data.
1911 * @param pe The recent input event as stored in pe struct.
1913 * @ingroup Elm_Gesture_Layer
1916 _single_line_process(Elm_Gesture_Line_Info *info, Line_Data *st,
1917 Pointer_Event *pe, Evas_Callback_Type event_type)
1918 { /* Record events and set momentum for line pointed by st */
1924 case EVAS_CALLBACK_MOUSE_DOWN:
1925 case EVAS_CALLBACK_MOUSE_MOVE:
1926 case EVAS_CALLBACK_MULTI_DOWN:
1927 case EVAS_CALLBACK_MULTI_MOVE:
1929 { /* This happens only when line starts */
1930 st->line_st.x = pe->x;
1931 st->line_st.y = pe->y;
1932 st->t_st = pe->timestamp;
1933 st->device = pe->device;
1934 info->momentum.x1 = pe->x;
1935 info->momentum.y1 = pe->y;
1936 info->momentum.tx = pe->timestamp;
1937 info->momentum.ty = pe->timestamp;
1944 case EVAS_CALLBACK_MOUSE_UP:
1945 case EVAS_CALLBACK_MULTI_UP:
1946 /* IGNORE if line info was cleared, like long press, move */
1950 st->line_end.x = pe->x;
1951 st->line_end.y = pe->y;
1952 st->t_end = pe->timestamp;
1961 _line_data_reset(st);
1965 info->momentum.x2 = pe->x;
1966 info->momentum.y2 = pe->y;
1967 _set_momentum(&info->momentum, st->line_st.x, st->line_st.y, pe->x, pe->y,
1968 st->t_st, st->t_st, pe->timestamp);
1976 * This function test for (n) line gesture.
1977 * @param obj The gesture-layer object.
1978 * @param pe The recent input event as stored in pe struct.
1979 * @param event_info Original input event pointer.
1980 * @param event_type Type of original input event.
1981 * @param g_type what Gesture we are testing.
1983 * @ingroup Elm_Gesture_Layer
1986 _n_line_test(Evas_Object *obj, Pointer_Event *pe, void *event_info,
1987 Evas_Callback_Type event_type, Elm_Gesture_Type g_type)
1991 Widget_Data *wd = elm_widget_data_get(obj);
1993 Gesture_Info *gesture = wd->gesture[g_type];
1994 if (!gesture ) return;
1996 /* When continues enable = TRUE a gesture may START on MOVE event */
1997 /* We don't allow this to happen with the if-statement below. */
1998 /* When continues enable = FALSE a gesture may START on DOWN only */
1999 /* Therefor it would NOT start on MOVE event. */
2000 /* NOTE that touched list is updated AFTER this function returns */
2001 /* so (count == 0) when we get here on first touch on surface. */
2002 if ((wd->glayer_continues_enable) && (!eina_list_count(wd->touched)))
2003 return; /* Got move on mouse-over move */
2005 Line_Type *st = gesture->data;
2008 st = calloc(1, sizeof(Line_Type));
2012 Line_Data *line = NULL;
2013 Eina_List *list = st->list;
2014 unsigned cnt = eina_list_count(list);
2017 { /* list is not empty, locate this device on list */
2018 line = (Line_Data *) eina_list_search_unsorted(st->list,
2019 compare_line_device, &pe->device);
2023 { /* List is empty or device not found, new line-struct on START only */
2024 if ((event_type == EVAS_CALLBACK_MOUSE_DOWN) ||
2025 (event_type == EVAS_CALLBACK_MULTI_DOWN) ||
2026 ((wd->glayer_continues_enable) && /* START on MOVE also */
2027 ((event_type == EVAS_CALLBACK_MOUSE_MOVE) ||
2028 (event_type == EVAS_CALLBACK_MULTI_MOVE))))
2029 { /* Allocate new item on START only */
2030 line = calloc(1, sizeof(Line_Data));
2031 _line_data_reset(line);
2032 list = eina_list_append(list, line);
2037 if (!line) /* This may happen on MOVE that comes before DOWN */
2038 return; /* No line-struct to work with, can't continue testing */
2040 if (_single_line_process(&st->info, line, pe, event_type)) /* update st with input */
2041 consume_event(wd, event_info, event_type, EVAS_EVENT_FLAG_NONE);
2043 /* Get direction and magnitude of the line */
2045 get_vector(line->line_st.x, line->line_st.y, pe->x, pe->y,
2046 &line->line_length, &angle);
2048 /* These are used later to compare lines length */
2049 Evas_Coord shortest_line_len = line->line_length;
2050 Evas_Coord longest_line_len = line->line_length;
2051 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
2053 /* Now update line-state */
2055 { /* Analyze line only if line started */
2056 if (line->line_angle >= 0.0)
2057 { /* if line direction was set, we test if broke tolerance */
2058 double a = fabs(angle - line->line_angle);
2060 double d = (tan(DEG2RAD(a))) * line->line_length; /* Distance from line */
2061 #if defined(DEBUG_GESTURE_LAYER)
2062 printf("%s a=<%f> d=<%f>\n", __func__, a, d);
2064 if ((d > wd->line_distance_tolerance) || (a > wd->line_angular_tolerance))
2065 { /* Broke tolerance: abort line and start a new one */
2066 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT,
2067 &st->info, EINA_FALSE);
2068 consume_event(wd, event_info, event_type, ev_flag);
2072 if (wd->glayer_continues_enable)
2073 { /* We may finish line if momentum is zero */
2074 /* This is for continues-gesture */
2075 if ((!st->info.momentum.mx) && (!st->info.momentum.my))
2076 { /* Finish line on zero momentum for continues gesture */
2077 line->line_end.x = pe->x;
2078 line->line_end.y = pe->y;
2079 line->t_end = pe->timestamp;
2084 { /* Record the line angle as it broke minimum length for line */
2085 if (line->line_length >= wd->line_min_length)
2086 st->info.angle = line->line_angle = angle;
2092 if (line->line_angle < 0.0)
2093 { /* it's not a line, too short more close to a tap */
2094 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT,
2095 &st->info, EINA_FALSE);
2096 consume_event(wd, event_info, event_type, ev_flag);
2102 /* Count how many lines already started / ended */
2105 unsigned int tm_start = pe->timestamp;
2106 unsigned int tm_end = pe->timestamp;
2109 double base_angle = ELM_GESTURE_NEGATIVE_ANGLE;
2110 Eina_Bool lines_parallel = EINA_TRUE;
2111 EINA_LIST_FOREACH(list, l, t_line)
2114 base_angle = t_line->line_angle;
2117 if (t_line->line_angle >= 0)
2118 { /* Compare angle only with lines with direction defined */
2119 if (fabs(base_angle - t_line->line_angle) >
2120 wd->line_angular_tolerance)
2121 lines_parallel = EINA_FALSE;
2125 if (t_line->line_length)
2126 { /* update only if this line is used */
2127 if (shortest_line_len > t_line->line_length)
2128 shortest_line_len = t_line->line_length;
2130 if (longest_line_len < t_line->line_length)
2131 longest_line_len = t_line->line_length;
2137 if (t_line->t_st < tm_start)
2138 tm_start = t_line->t_st;
2144 if (t_line->t_end < tm_end)
2145 tm_end = t_line->t_end;
2149 st->info.momentum.n = started;
2153 ((event_type == EVAS_CALLBACK_MOUSE_DOWN) ||
2154 (event_type == EVAS_CALLBACK_MULTI_DOWN)))
2155 { /* user lift one finger then starts again without line-end - ABORT */
2156 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT, &st->info,
2158 consume_event(wd, event_info, event_type, ev_flag);
2162 if (!lines_parallel)
2163 { /* Lines are NOT at same direction, abort this gesture */
2164 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT, &st->info,
2166 consume_event(wd, event_info, event_type, ev_flag);
2171 /* We report ABORT if lines length are NOT matching when fingers are up */
2172 if ((longest_line_len - shortest_line_len) > (_elm_config->finger_size * 2))
2174 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT, &st->info,
2176 consume_event(wd, event_info, event_type, ev_flag);
2180 if ((g_type == ELM_GESTURE_N_FLICKS) && ((tm_end - tm_start) > wd->flick_time_limit_ms))
2181 { /* We consider FLICK as a fast line.ABORT if take too long to finish */
2182 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT, &st->info,
2184 consume_event(wd, event_info, event_type, ev_flag);
2190 case EVAS_CALLBACK_MOUSE_UP:
2191 case EVAS_CALLBACK_MULTI_UP:
2192 if ((started) && (started == ended))
2194 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_END,
2195 &st->info, EINA_FALSE);
2196 consume_event(wd, event_info, event_type, ev_flag);
2201 case EVAS_CALLBACK_MOUSE_DOWN:
2202 case EVAS_CALLBACK_MULTI_DOWN:
2203 case EVAS_CALLBACK_MOUSE_MOVE:
2204 case EVAS_CALLBACK_MULTI_MOVE:
2207 if (wd->glayer_continues_enable && (started == ended))
2208 { /* For continues gesture */
2209 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_END,
2210 &st->info, EINA_FALSE);
2211 consume_event(wd, event_info, event_type, ev_flag);
2214 { /* When continues, may START on MOVE event too */
2215 Elm_Gesture_State s = ELM_GESTURE_STATE_MOVE;
2217 /* This happens when: on n > 1 lines then one finger up */
2218 /* caused abort, then put finger down. */
2219 /* This will stop line from starting again. */
2220 /* Number of lines, MUST match touched-device in list */
2221 if ((!wd->glayer_continues_enable) &&
2222 (eina_list_count(st->list) < eina_list_count(wd->touched)))
2223 s = ELM_GESTURE_STATE_ABORT;
2225 if (gesture->state == ELM_GESTURE_STATE_UNDEFINED)
2226 s = ELM_GESTURE_STATE_START;
2228 ev_flag = _set_state(gesture, s, &st->info, EINA_TRUE);
2229 consume_event(wd, event_info, event_type, ev_flag);
2235 return; /* Unhandeld event type */
2242 * This function is used to check if rotation gesture started.
2243 * @param st Contains current rotation values from user input.
2244 * @return TRUE/FALSE if we need to set rotation START.
2246 * @ingroup Elm_Gesture_Layer
2249 rotation_broke_tolerance(Rotate_Type *st)
2251 if (st->info.base_angle < 0)
2252 return EINA_FALSE; /* Angle has to be computed first */
2254 if (st->rotate_angular_tolerance < 0)
2257 double low = st->info.base_angle - st->rotate_angular_tolerance;
2258 double high = st->info.base_angle + st->rotate_angular_tolerance;
2259 double t = st->info.angle;
2283 #if defined(DEBUG_GESTURE_LAYER)
2284 printf("%s angle=<%f> low=<%f> high=<%f>\n", __func__, t, low, high);
2286 if ((t < low) || (t > high))
2287 { /* This marks that roation action has started */
2288 st->rotate_angular_tolerance = ELM_GESTURE_NEGATIVE_ANGLE;
2289 st->info.base_angle = st->info.angle; /* Avoid jump in angle value */
2299 * This function is used for computing the gap between fingers.
2300 * It returns the length and center point between fingers.
2302 * @param x1 first finger x location.
2303 * @param y1 first finger y location.
2304 * @param x2 second finger x location.
2305 * @param y2 second finger y location.
2306 * @param x Gets center point x cord (output)
2307 * @param y Gets center point y cord (output)
2309 * @return length of the line between (x1,y1), (x2,y2) in pixels.
2311 * @ingroup Elm_Gesture_Layer
2314 get_finger_gap_length(Evas_Coord xx1, Evas_Coord yy1,
2315 Evas_Coord xx2, Evas_Coord yy2,
2316 Evas_Coord *x, Evas_Coord *y)
2318 double a, b, xx, yy, gap;
2319 xx = fabs(xx2 - xx1);
2320 yy = fabs(yy2 - yy1);
2321 gap = sqrt((xx * xx) + (yy * yy));
2323 /* START - Compute zoom center point */
2324 /* The triangle defined as follows:
2332 * http://en.wikipedia.org/wiki/Trigonometric_functions
2333 *************************************/
2334 if (((int)xx) && ((int)yy))
2336 double A = atan((yy / xx));
2337 #if defined(DEBUG_GESTURE_LAYER)
2338 printf("xx=<%f> yy=<%f> A=<%f>\n", xx, yy, A);
2340 a = (Evas_Coord) ((gap / 2) * sin(A));
2341 b = (Evas_Coord) ((gap / 2) * cos(A));
2342 *x = (Evas_Coord) ((xx2 > xx1) ? (xx1 + b) : (xx2 + b));
2343 *y = (Evas_Coord) ((yy2 > yy1) ? (yy1 + a) : (yy2 + a));
2348 { /* horiz line, take half width */
2349 #if defined(DEBUG_GESTURE_LAYER)
2350 printf("==== HORIZ ====\n");
2352 *x = (Evas_Coord) ((xx1 + xx2) / 2);
2353 *y = (Evas_Coord) (yy1);
2357 { /* vert line, take half width */
2358 #if defined(DEBUG_GESTURE_LAYER)
2359 printf("==== VERT ====\n");
2361 *x = (Evas_Coord) (xx1);
2362 *y = (Evas_Coord) ((yy1 + yy2) / 2);
2365 /* END - Compute zoom center point */
2367 return (Evas_Coord) gap;
2373 * This function is used for computing zoom value.
2375 * @param st Pointer to zoom data based on user input.
2376 * @param tm_end Recent input event timestamp.
2377 * @param zoom_val Current computed zoom value.
2379 * @return zoom momentum
2381 * @ingroup Elm_Gesture_Layer
2384 _zoom_momentum_get(Zoom_Type *st, unsigned int tm_end, double zoom_val)
2386 unsigned int tm_total;
2388 { /* Init, and we don't start computing momentum yet */
2389 st->m_st_tm = st->m_prev_tm = tm_end;
2390 st->m_base = zoom_val;
2394 if ((tm_end - ELM_GESTURE_MOMENTUM_DELAY) < st->m_st_tm)
2395 return 0.0; /* we don't start to compute momentum yet */
2398 { /* if direction was already defined, check if changed */
2399 if (((st->dir < 0) && (zoom_val > st->info.zoom)) ||
2400 ((st->dir > 0) && (zoom_val < st->info.zoom)))
2401 { /* Direction changed, reset momentum */
2403 st->dir = (-st->dir);
2408 st->dir = (zoom_val > st->info.zoom) ? 1 : -1; /* init */
2410 if ((tm_end - ELM_GESTURE_MOMENTUM_TIMEOUT) > st->m_prev_tm)
2412 st->m_st_tm = 0; /* Rest momentum when waiting too long */
2416 st->m_prev_tm = tm_end;
2417 tm_total = tm_end - st->m_st_tm;
2420 return ((zoom_val - st->m_base) * 1000) / tm_total;
2428 * This function is used for computing zoom value.
2430 * @param st Pointer to zoom data based on user input.
2431 * @param x1 first finger x location.
2432 * @param y1 first finger y location.
2433 * @param x2 second finger x location.
2434 * @param y2 second finger y location.
2435 * @param factor zoom-factor, used to determine how fast zoom works.
2437 * @return zoom value, when 1.0 means no zoom, 0.5 half size...
2439 * @ingroup Elm_Gesture_Layer
2442 compute_zoom(Zoom_Type *st,
2443 Evas_Coord xx1, Evas_Coord yy1,
2444 Evas_Coord xx2, Evas_Coord yy2,
2445 double zoom_finger_factor)
2448 unsigned int tm_end = (st->zoom_mv.timestamp > st->zoom_mv1.timestamp) ?
2449 st->zoom_mv.timestamp : st->zoom_mv1.timestamp;
2451 Evas_Coord diam = get_finger_gap_length(xx1, yy1, xx2, yy2,
2452 &st->info.x, &st->info.y);
2454 st->info.radius = diam / 2;
2458 st->zoom_base = diam;
2459 return st->info.zoom;
2462 if (st->zoom_distance_tolerance)
2463 { /* zoom tolerance <> ZERO, means zoom action NOT started yet */
2464 if (diam < (st->zoom_base - st->zoom_distance_tolerance))
2465 { /* avoid jump with zoom value when break tolerance */
2466 st->zoom_base -= st->zoom_distance_tolerance;
2467 st->zoom_distance_tolerance = 0;
2470 if (diam > (st->zoom_base + st->zoom_distance_tolerance))
2471 { /* avoid jump with zoom value when break tolerance */
2472 st->zoom_base += st->zoom_distance_tolerance;
2473 st->zoom_distance_tolerance = 0;
2479 /* We use factor only on the difference between gap-base */
2480 /* if gap=120, base=100, we get ((120-100)/100)=0.2*factor */
2481 rt = ((1.0) + ((((float) diam - (float) st->zoom_base) /
2482 (float) st->zoom_base) * zoom_finger_factor));
2484 /* Momentum: zoom per second: */
2485 st->info.momentum = _zoom_momentum_get(st, tm_end, rt);
2493 * This function handles zoom with mouse wheel.
2494 * thats a combination of wheel + CTRL key.
2495 * @param obj The gesture-layer object.
2496 * @param event_info Original input event pointer.
2497 * @param event_type Type of original input event.
2498 * @param g_type what Gesture we are testing.
2500 * @ingroup Elm_Gesture_Layer
2503 _zoom_with_wheel_test(Evas_Object *obj, void *event_info,
2504 Evas_Callback_Type event_type, Elm_Gesture_Type g_type)
2506 Widget_Data *wd = elm_widget_data_get(obj);
2508 if (!wd->gesture[g_type]) return;
2510 Gesture_Info *gesture_zoom = wd->gesture[g_type];
2511 Zoom_Type *st = gesture_zoom->data;
2512 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
2514 { /* Allocated once on first time, used for zoom intermediate data */
2515 st = calloc(1, sizeof(Zoom_Type));
2516 gesture_zoom->data = st;
2517 _zoom_test_reset(gesture_zoom);
2522 case EVAS_CALLBACK_KEY_UP:
2524 Evas_Event_Key_Up *p = event_info;
2525 if ((!strcmp(p->keyname, "Control_L")) ||
2526 (!strcmp(p->keyname, "Control_R")))
2527 { /* Test if we ended a zoom gesture when releasing CTRL */
2528 if ((st->zoom_wheel) &&
2529 ((gesture_zoom->state == ELM_GESTURE_STATE_START) ||
2530 (gesture_zoom->state == ELM_GESTURE_STATE_MOVE)))
2531 { /* User released CTRL after zooming */
2532 st->info.momentum = _zoom_momentum_get(st,
2533 p->timestamp, st->info.zoom);
2535 ev_flag = _set_state(gesture_zoom,
2536 ELM_GESTURE_STATE_END, &st->info, EINA_FALSE);
2537 consume_event(wd, event_info, event_type, ev_flag);
2545 case EVAS_CALLBACK_MOUSE_WHEEL:
2548 Elm_Gesture_State s;
2549 if (!evas_key_modifier_is_set(
2550 ((Evas_Event_Mouse_Wheel *) event_info)->modifiers,
2552 { /* if using wheel witout CTRL after starting zoom */
2553 if ((st->zoom_wheel) &&
2554 ((gesture_zoom->state == ELM_GESTURE_STATE_START) ||
2555 (gesture_zoom->state == ELM_GESTURE_STATE_MOVE)))
2557 ev_flag = _set_state(gesture_zoom,
2558 ELM_GESTURE_STATE_END, &st->info, EINA_FALSE);
2559 consume_event(wd, event_info, event_type, ev_flag);
2564 return; /* Ignore mouse-wheel without control */
2567 /* Using mouse wheel with CTRL for zoom */
2568 if (st->zoom_wheel || (st->zoom_distance_tolerance == 0))
2569 { /* (zoom_wheel == NULL) and (zoom_distance_tolerance == 0)
2570 we continue a zoom gesture */
2572 s = ELM_GESTURE_STATE_MOVE;
2575 { /* On first wheel event, report START */
2576 Evas_Modifier_Mask mask = evas_key_modifier_mask_get(
2577 evas_object_evas_get(wd->target), "Control");
2579 s = ELM_GESTURE_STATE_START;
2580 if (!evas_object_key_grab(wd->target, "Control_L", mask, 0, EINA_FALSE))
2581 ERR("Failed to Grabbed CTRL_L");
2582 if (!evas_object_key_grab(wd->target, "Control_R", mask, 0, EINA_FALSE))
2583 ERR("Failed to Grabbed CTRL_R");
2586 st->zoom_distance_tolerance = 0; /* Cancel tolerance */
2587 st->zoom_wheel = (Evas_Event_Mouse_Wheel *) event_info;
2588 st->info.x = st->zoom_wheel->canvas.x;
2589 st->info.y = st->zoom_wheel->canvas.y;
2591 if (st->zoom_wheel->z < 0) /* zoom in */
2592 st->info.zoom += (wd->zoom_finger_factor * wd->zoom_wheel_factor);
2594 if (st->zoom_wheel->z > 0) /* zoom out */
2595 st->info.zoom -= (wd->zoom_finger_factor * wd->zoom_wheel_factor);
2597 if (st->info.zoom < 0.0)
2598 st->info.zoom = 0.0;
2600 st->info.momentum = _zoom_momentum_get(st,
2601 st->zoom_wheel->timestamp, st->info.zoom);
2603 ev_flag = _set_state(gesture_zoom, s, &st->info, force);
2604 consume_event(wd, event_info, event_type, ev_flag);
2616 * This function is used to test zoom gesture.
2617 * user may combine zoom, rotation together.
2618 * so its possible that both will be detected from input.
2619 * (both are two-finger movement-oriented gestures)
2621 * @param obj The gesture-layer object.
2622 * @param event_info Pointer to recent input event.
2623 * @param event_type Recent input event type.
2624 * @param g_type what Gesture we are testing.
2626 * @ingroup Elm_Gesture_Layer
2629 _zoom_test(Evas_Object *obj, Pointer_Event *pe, void *event_info,
2630 Evas_Callback_Type event_type, Elm_Gesture_Type g_type)
2634 Widget_Data *wd = elm_widget_data_get(obj);
2636 if (!wd->gesture[g_type]) return;
2638 Gesture_Info *gesture_zoom = wd->gesture[g_type];
2639 Zoom_Type *st = gesture_zoom->data;
2642 { /* Allocated once on first time, used for zoom data */
2643 st = calloc(1, sizeof(Zoom_Type));
2644 gesture_zoom->data = st;
2645 _zoom_test_reset(gesture_zoom);
2649 /* Start - new zoom testing, letting all fingers start */
2650 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
2653 case EVAS_CALLBACK_MOUSE_MOVE:
2654 case EVAS_CALLBACK_MULTI_MOVE:
2655 /* if non-continues mode and gesture NOT started, ignore MOVE */
2656 if ((!wd->glayer_continues_enable) &&
2657 (!st->zoom_st.timestamp))
2660 case EVAS_CALLBACK_MOUSE_DOWN:
2661 case EVAS_CALLBACK_MULTI_DOWN:
2662 { /* Here we take care of zoom-start and zoom move */
2666 if(eina_list_count(wd->touched) > 2)
2667 { /* Process zoom only when 2 fingers on surface */
2668 ev_flag = _set_state(gesture_zoom,
2669 ELM_GESTURE_STATE_ABORT, &st->info, EINA_FALSE);
2670 consume_event(wd, event_info, event_type, ev_flag);
2675 if (!st->zoom_st.timestamp)
2676 { /* Now scan touched-devices list and find other finger */
2677 EINA_LIST_FOREACH(wd->touched, l, p)
2678 { /* Device of other finger <> pe device */
2679 if (p->device != pe->device)
2683 if (!p) /* Single finger on touch */
2686 /* Record down fingers */
2687 consume_event(wd, event_info, event_type, ev_flag);
2688 memcpy(&st->zoom_st, pe, sizeof(Pointer_Event));
2689 memcpy(&st->zoom_st1, p, sizeof(Pointer_Event));
2691 /* Set mv field as well to be ready for MOVE events */
2692 memcpy(&st->zoom_mv, pe, sizeof(Pointer_Event));
2693 memcpy(&st->zoom_mv1, p, sizeof(Pointer_Event));
2695 /* Here we have zoom_st, zoom_st1 set, report START */
2696 /* Set zoom-base after BOTH down events recorded */
2697 /* Compute length of line between fingers zoom start */
2698 st->info.zoom = 1.0;
2699 st->zoom_base = get_finger_gap_length(st->zoom_st1.x,
2700 st->zoom_st1.y, st->zoom_st.x, st->zoom_st.y,
2701 &st->info.x, &st->info.y);
2703 st->info.radius = st->zoom_base / 2;
2705 if ((gesture_zoom->state != ELM_GESTURE_STATE_START) &&
2706 (gesture_zoom->state != ELM_GESTURE_STATE_MOVE))
2707 { /* zoom started with mouse-wheel, don't report twice */
2708 ev_flag = _set_state(gesture_zoom,
2709 ELM_GESTURE_STATE_START, &st->info, EINA_FALSE);
2710 consume_event(wd, event_info, event_type, ev_flag);
2713 return; /* Zoom started */
2714 } /* End of ZOOM_START handling */
2717 /* if we got here, we have (exacally) two fingers on surfce */
2718 /* we also after START, report MOVE */
2719 /* First detect which finger moved */
2720 if (pe->device == st->zoom_mv.device)
2721 memcpy(&st->zoom_mv, pe, sizeof(Pointer_Event));
2722 else if (pe->device == st->zoom_mv1.device)
2723 memcpy(&st->zoom_mv1, pe, sizeof(Pointer_Event));
2725 /* Compute change in zoom as fingers move */
2726 st->info.zoom = compute_zoom(st,
2727 st->zoom_mv.x, st->zoom_mv.y,
2728 st->zoom_mv1.x, st->zoom_mv1.y,
2729 wd->zoom_finger_factor);
2731 if (!st->zoom_distance_tolerance)
2732 { /* Zoom broke tolerance, report move */
2733 double d = st->info.zoom - st->next_step;
2737 if (d >= wd->zoom_step)
2738 { /* Report move in steps */
2739 st->next_step = st->info.zoom;
2741 ev_flag = _set_state(gesture_zoom,
2742 ELM_GESTURE_STATE_MOVE,
2743 &st->info, EINA_TRUE);
2744 consume_event(wd, event_info, event_type, ev_flag);
2746 } /* End of ZOOM_MOVE handling */
2751 case EVAS_CALLBACK_MOUSE_UP:
2752 case EVAS_CALLBACK_MULTI_UP:
2753 /* Reset timestamp of finger-up.This is used later
2754 by _zoom_test_reset() to retain finger-down data */
2755 consume_event(wd, event_info, event_type, ev_flag);
2756 if (((st->zoom_wheel) || (st->zoom_base)) &&
2757 (st->zoom_distance_tolerance == 0))
2759 ev_flag = _set_state(gesture_zoom, ELM_GESTURE_STATE_END,
2760 &st->info, EINA_FALSE);
2761 consume_event(wd, event_info, event_type, ev_flag);
2766 /* if we got here not a ZOOM */
2767 if (gesture_zoom->state != ELM_GESTURE_STATE_UNDEFINED)
2768 { /* Must be != undefined, if gesture started */
2769 ev_flag = _set_state(gesture_zoom,
2770 ELM_GESTURE_STATE_ABORT, &st->info, EINA_FALSE);
2771 consume_event(wd, event_info, event_type, ev_flag);
2774 _zoom_test_reset(gesture_zoom);
2784 _get_rotate_properties(Rotate_Type *st,
2785 Evas_Coord xx1, Evas_Coord yy1,
2786 Evas_Coord xx2, Evas_Coord yy2,
2788 { /* FIXME: Fix momentum computation, it's wrong */
2789 double prev_angle = *angle;
2790 st->info.radius = get_finger_gap_length(xx1, yy1, xx2, yy2,
2791 &st->info.x, &st->info.y) / 2;
2793 *angle = get_angle(xx1, yy1, xx2, yy2);
2795 if (angle == &st->info.angle)
2796 { /* Fingers are moving, compute momentum */
2797 unsigned int tm_start =
2798 (st->rotate_st.timestamp > st->rotate_st1.timestamp)
2799 ? st->rotate_st.timestamp : st->rotate_st1.timestamp;
2800 unsigned int tm_end =
2801 (st->rotate_mv.timestamp > st->rotate_mv1.timestamp)
2802 ? st->rotate_mv.timestamp : st->rotate_mv1.timestamp;
2804 unsigned int tm_total = tm_end - tm_start;
2806 { /* Momentum computed as:
2807 accumulated roation angle (deg) divided by time */
2809 if (((prev_angle < 90) && ((*angle) > 270)) ||
2810 ((prev_angle > 270) && ((*angle) < 90)))
2811 { /* We circle passing ZERO point */
2812 prev_angle = (*angle);
2814 else m = prev_angle - (*angle);
2816 st->accum_momentum += m;
2818 if ((tm_end - st->prev_momentum_tm) < 100)
2819 st->prev_momentum += m;
2822 if (fabs(st->prev_momentum) < 0.002)
2823 st->accum_momentum = 0.0; /* reset momentum */
2825 st->prev_momentum = 0.0; /* Start again */
2828 st->prev_momentum_tm = tm_end;
2829 st->info.momentum = (st->accum_momentum * 1000) / tm_total;
2833 st->info.momentum = 0;
2839 * This function is used to test rotation gesture.
2840 * user may combine zoom, rotation together.
2841 * so its possible that both will be detected from input.
2842 * (both are two-finger movement-oriented gestures)
2844 * @param obj The gesture-layer object.
2845 * @param event_info Pointer to recent input event.
2846 * @param event_type Recent input event type.
2847 * @param g_type what Gesture we are testing.
2849 * @ingroup Elm_Gesture_Layer
2852 _rotate_test(Evas_Object *obj, Pointer_Event *pe, void *event_info,
2853 Evas_Callback_Type event_type, Elm_Gesture_Type g_type)
2858 Widget_Data *wd = elm_widget_data_get(obj);
2860 if (!wd->gesture[g_type]) return;
2862 Gesture_Info *gesture = wd->gesture[g_type];
2868 { /* Allocated once on first time */
2869 st = calloc(1, sizeof(Rotate_Type));
2871 _rotate_test_reset(gesture);
2875 Evas_Event_Flags ev_flag = EVAS_EVENT_FLAG_NONE;
2878 case EVAS_CALLBACK_MOUSE_MOVE:
2879 case EVAS_CALLBACK_MULTI_MOVE:
2880 /* if non-continues mode and gesture NOT started, ignore MOVE */
2881 if ((!wd->glayer_continues_enable) &&
2882 (!st->rotate_st.timestamp))
2885 case EVAS_CALLBACK_MOUSE_DOWN:
2886 case EVAS_CALLBACK_MULTI_DOWN:
2887 { /* Here we take care of rotate-start and rotate move */
2891 if(eina_list_count(wd->touched) > 2)
2892 { /* Process rotate only when 2 fingers on surface */
2893 ev_flag = _set_state(gesture,
2894 ELM_GESTURE_STATE_ABORT, &st->info, EINA_FALSE);
2895 consume_event(wd, event_info, event_type, ev_flag);
2900 if (!st->rotate_st.timestamp)
2901 { /* Now scan touched-devices list and find other finger */
2902 EINA_LIST_FOREACH(wd->touched, l, p)
2903 { /* Device of other finger <> pe device */
2904 if (p->device != pe->device)
2909 return; /* Single finger on touch */
2911 /* Record down fingers */
2912 consume_event(wd, event_info, event_type, ev_flag);
2913 memcpy(&st->rotate_st, pe, sizeof(Pointer_Event));
2914 memcpy(&st->rotate_st1, p, sizeof(Pointer_Event));
2916 /* Set mv field as well to be ready for MOVE events */
2917 memcpy(&st->rotate_mv, pe, sizeof(Pointer_Event));
2918 memcpy(&st->rotate_mv1, p, sizeof(Pointer_Event));
2920 /* Here we have rotate_st, rotate_st1 set, report START */
2921 /* Set rotate-base after BOTH down events recorded */
2922 /* Compute length of line between fingers rotate start */
2923 _get_rotate_properties(st,
2924 st->rotate_st.x, st->rotate_st.y,
2925 st->rotate_st1.x, st->rotate_st1.y,
2926 &st->info.base_angle);
2928 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_START,
2929 &st->info, EINA_FALSE);
2930 consume_event(wd, event_info, event_type, ev_flag);
2932 return; /* Rotate started */
2933 } /* End of ROTATE_START handling */
2936 /* if we got here, we have (exacally) two fingers on surfce */
2937 /* we also after START, report MOVE */
2938 /* First detect which finger moved */
2939 if (pe->device == st->rotate_mv.device)
2940 memcpy(&st->rotate_mv, pe, sizeof(Pointer_Event));
2941 else if (pe->device == st->rotate_mv1.device)
2942 memcpy(&st->rotate_mv1, pe, sizeof(Pointer_Event));
2944 /* Compute change in rotate as fingers move */
2945 _get_rotate_properties(st,
2946 st->rotate_mv.x, st->rotate_mv.y,
2947 st->rotate_mv1.x, st->rotate_mv1.y,
2950 if (rotation_broke_tolerance(st))
2951 { /* Rotation broke tolerance, report move */
2952 double d = st->info.angle - st->next_step;
2956 if (d >= wd->rotate_step)
2957 { /* Report move in steps */
2958 st->next_step = st->info.angle;
2960 ev_flag = _set_state(gesture,
2961 ELM_GESTURE_STATE_MOVE, &st->info, EINA_TRUE);
2962 consume_event(wd, event_info, event_type, ev_flag);
2964 } /* End of ROTATE_MOVE handling */
2969 case EVAS_CALLBACK_MOUSE_UP:
2970 case EVAS_CALLBACK_MULTI_UP:
2971 consume_event(wd, event_info, event_type, ev_flag);
2972 /* Reset timestamp of finger-up.This is used later
2973 by rotate_test_reset() to retain finger-down data */
2974 if (st->rotate_angular_tolerance < 0)
2976 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_END,
2977 &st->info, EINA_FALSE);
2978 consume_event(wd, event_info, event_type, ev_flag);
2983 if (gesture->state != ELM_GESTURE_STATE_UNDEFINED)
2984 { /* Must be != undefined, if gesture started */
2985 ev_flag = _set_state(gesture, ELM_GESTURE_STATE_ABORT,
2986 &st->info, EINA_FALSE);
2987 consume_event(wd, event_info, event_type, ev_flag);
2990 _rotate_test_reset(gesture);
3001 * This function is used to save input events in an abstract struct
3002 * to be used later by getsure-testing functions.
3004 * @param data The gesture-layer object.
3005 * @param event_info Pointer to recent input event.
3006 * @param event_type Recent input event type.
3007 * @param pe The abstract data-struct (output).
3009 * @ingroup Elm_Gesture_Layer
3012 _make_pointer_event(void *data, void *event_info,
3013 Evas_Callback_Type event_type, Pointer_Event *pe)
3015 Widget_Data *wd = elm_widget_data_get(data);
3016 if (!wd) return EINA_FALSE;
3018 memset(pe, '\0', sizeof(*pe));
3021 case EVAS_CALLBACK_MOUSE_DOWN:
3022 pe->x = ((Evas_Event_Mouse_Down *) event_info)->canvas.x;
3023 pe->y = ((Evas_Event_Mouse_Down *) event_info)->canvas.y;
3024 pe->timestamp = ((Evas_Event_Mouse_Down *) event_info)->timestamp;
3025 pe->device = ELM_MOUSE_DEVICE;
3028 case EVAS_CALLBACK_MOUSE_UP:
3029 pe->x = ((Evas_Event_Mouse_Up *) event_info)->canvas.x;
3030 pe->y = ((Evas_Event_Mouse_Up *) event_info)->canvas.y;
3031 pe->timestamp = ((Evas_Event_Mouse_Up *) event_info)->timestamp;
3032 pe->device = ELM_MOUSE_DEVICE;
3035 case EVAS_CALLBACK_MOUSE_MOVE:
3036 pe->x = ((Evas_Event_Mouse_Move *) event_info)->cur.canvas.x;
3037 pe->y = ((Evas_Event_Mouse_Move *) event_info)->cur.canvas.y;
3038 pe->timestamp = ((Evas_Event_Mouse_Move *) event_info)->timestamp;
3039 pe->device = ELM_MOUSE_DEVICE;
3042 case EVAS_CALLBACK_MULTI_DOWN:
3043 pe->x = ((Evas_Event_Multi_Down *) event_info)->canvas.x;
3044 pe->y = ((Evas_Event_Multi_Down *) event_info)->canvas.y;
3045 pe->timestamp = ((Evas_Event_Multi_Down *) event_info)->timestamp;
3046 pe->device = ((Evas_Event_Multi_Down *) event_info)->device;
3049 case EVAS_CALLBACK_MULTI_UP:
3050 pe->x = ((Evas_Event_Multi_Up *) event_info)->canvas.x;
3051 pe->y = ((Evas_Event_Multi_Up *) event_info)->canvas.y;
3052 pe->timestamp = ((Evas_Event_Multi_Up *) event_info)->timestamp;
3053 pe->device = ((Evas_Event_Multi_Up *) event_info)->device;
3056 case EVAS_CALLBACK_MULTI_MOVE:
3057 pe->x = ((Evas_Event_Multi_Move *) event_info)->cur.canvas.x;
3058 pe->y = ((Evas_Event_Multi_Move *) event_info)->cur.canvas.y;
3059 pe->timestamp = ((Evas_Event_Multi_Move *) event_info)->timestamp;
3060 pe->device = ((Evas_Event_Multi_Move *) event_info)->device;
3067 pe->event_type = event_type;
3074 * This function restartes line, flick, zoom and rotate gestures
3075 * when gesture-layer continues-gestures enabled.
3076 * Example of continues-gesture:
3077 * When doing a line, user stops moving finger but keeps fingers on touch.
3078 * This will cause line-end, then as user continues moving his finger
3079 * it re-starts line gesture.
3080 * When continue mode is disabled, user has to lift finger from touch
3081 * to end a gesture. Them touch-again to start a new one.
3083 * @param data The gesture-layer object.
3084 * @param wd gesture layer widget data.
3085 * @param states_reset flag that marks gestures were reset in history clear.
3087 * @ingroup Elm_Gesture_Layer
3090 continues_gestures_restart(void *data, Eina_Bool states_reset)
3092 Widget_Data *wd = elm_widget_data_get(data);
3095 /* Run through events to restart gestures */
3097 Eina_Bool n_momentum, n_lines, n_flicks, zoom, rotate;
3098 /* We turn-on flag for finished, aborted, not-started gestures */
3099 g = wd->gesture[ELM_GESTURE_MOMENTUM];
3100 n_momentum = (g) ? ((states_reset) | ((g->state != ELM_GESTURE_STATE_START)
3101 && (g->state != ELM_GESTURE_STATE_MOVE))) : EINA_FALSE;
3104 _momentum_test_reset(wd->gesture[ELM_GESTURE_MOMENTUM]);
3105 _set_state(g, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
3109 g = wd->gesture[ELM_GESTURE_N_LINES];
3110 n_lines = (g) ? ((states_reset) | ((g->state != ELM_GESTURE_STATE_START)
3111 && (g->state != ELM_GESTURE_STATE_MOVE))) : EINA_FALSE;
3114 _line_test_reset(wd->gesture[ELM_GESTURE_N_LINES]);
3115 _set_state(g, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
3119 g = wd->gesture[ELM_GESTURE_N_FLICKS];
3120 n_flicks = (g) ? ((states_reset) | ((g->state != ELM_GESTURE_STATE_START)
3121 && (g->state != ELM_GESTURE_STATE_MOVE))) : EINA_FALSE;
3124 _line_test_reset(wd->gesture[ELM_GESTURE_N_FLICKS]);
3125 _set_state(g, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
3129 g = wd->gesture[ELM_GESTURE_ZOOM];
3130 zoom = (g) ? ((states_reset) | ((g->state != ELM_GESTURE_STATE_START)
3131 && (g->state != ELM_GESTURE_STATE_MOVE))) : EINA_FALSE;
3134 _zoom_test_reset(wd->gesture[ELM_GESTURE_ZOOM]);
3135 _set_state(g, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
3139 g = wd->gesture[ELM_GESTURE_ROTATE];
3140 rotate = (g) ? ((states_reset) | ((g->state != ELM_GESTURE_STATE_START)
3141 && (g->state != ELM_GESTURE_STATE_MOVE))) : EINA_FALSE;
3144 _rotate_test_reset(wd->gesture[ELM_GESTURE_ROTATE]);
3145 _set_state(g, ELM_GESTURE_STATE_UNDEFINED, NULL, EINA_FALSE);
3153 * This function the core-function where input handling is done.
3154 * Here we get user input and stream it to gesture testing.
3155 * We notify user about any gestures with new state:
3157 * START - gesture started.
3158 * MOVE - gesture is ongoing.
3159 * END - gesture was completed.
3160 * ABORT - gesture was aborted after START, MOVE (will NOT be completed)
3162 * We also check if a gesture was detected, then reset event history
3163 * If no gestures were found we reset gesture test flag
3164 * after streaming event-history to widget.
3165 * (stream to the widget all events not consumed as a gesture)
3167 * @param data The gesture-layer object.
3168 * @param event_info Pointer to recent input event.
3169 * @param event_type Recent input event type.
3171 * @ingroup Elm_Gesture_Layer
3174 _event_process(void *data, Evas_Object *obj __UNUSED__,
3175 void *event_info, Evas_Callback_Type event_type)
3178 Pointer_Event *pe = NULL;
3179 Widget_Data *wd = elm_widget_data_get(data);
3181 #if defined(DEBUG_GESTURE_LAYER)
3184 printf("Gesture | State | is tested\n");
3185 for(i = ELM_GESTURE_N_TAPS; i < ELM_GESTURE_LAST; i++)
3189 printf(" %d %d %d\n", i, g->state, g->test);
3193 /* Start testing candidate gesture from here */
3194 if (_make_pointer_event(data, event_info, event_type, &_pe))
3197 if (IS_TESTED(ELM_GESTURE_N_LONG_TAPS))
3198 _n_long_tap_test(data, pe, event_info, event_type,
3199 ELM_GESTURE_N_LONG_TAPS);
3201 /* This takes care of single, double and tripple tap */
3202 _tap_gestures_test(data, pe, event_info, event_type);
3204 if (IS_TESTED(ELM_GESTURE_MOMENTUM))
3205 _momentum_test(data, pe, event_info, event_type,
3206 ELM_GESTURE_MOMENTUM);
3208 if (IS_TESTED(ELM_GESTURE_N_LINES))
3209 _n_line_test(data, pe, event_info, event_type, ELM_GESTURE_N_LINES);
3211 if (IS_TESTED(ELM_GESTURE_N_FLICKS))
3212 _n_line_test(data, pe, event_info, event_type, ELM_GESTURE_N_FLICKS);
3214 if (_elm_config->glayer_zoom_finger_enable && IS_TESTED(ELM_GESTURE_ZOOM))
3215 _zoom_test(data, pe, event_info, event_type, ELM_GESTURE_ZOOM);
3217 if (IS_TESTED(ELM_GESTURE_ZOOM))
3218 _zoom_with_wheel_test(data, event_info, event_type, ELM_GESTURE_ZOOM);
3220 if (_elm_config->glayer_rotate_finger_enable && IS_TESTED(ELM_GESTURE_ROTATE))
3221 _rotate_test(data, pe, event_info, event_type, ELM_GESTURE_ROTATE);
3223 if (_get_event_flag(event_info, event_type) & EVAS_EVENT_FLAG_ON_HOLD)
3224 _event_history_add(data, event_info, event_type);
3225 else if ((event_type == EVAS_CALLBACK_MOUSE_UP) ||
3226 (event_type == EVAS_CALLBACK_MULTI_UP))
3228 Eina_List *pending = _device_is_pending(wd->pending, event_info, event_type);
3231 consume_event(wd, event_info, event_type, EVAS_EVENT_FLAG_ON_HOLD);
3232 _event_history_add(data, event_info, event_type);
3236 /* we maintain list of touched devices */
3237 /* We also use move to track current device x.y pos */
3238 if ((event_type == EVAS_CALLBACK_MOUSE_DOWN) ||
3239 (event_type == EVAS_CALLBACK_MULTI_DOWN) ||
3240 (event_type == EVAS_CALLBACK_MOUSE_MOVE) ||
3241 (event_type == EVAS_CALLBACK_MULTI_MOVE))
3243 wd->touched = _add_touched_device(wd->touched, pe);
3245 else if ((event_type == EVAS_CALLBACK_MOUSE_UP) ||
3246 (event_type == EVAS_CALLBACK_MULTI_UP))
3248 wd->touched = _remove_touched_device(wd->touched, pe);
3251 /* Report current states and clear history if needed */
3252 Eina_Bool states_reset = _clear_if_finished(data);
3253 if (wd->glayer_continues_enable)
3254 continues_gestures_restart(data, states_reset);
3259 * For all _mouse_* / multi_* functions wethen send this event to
3260 * _event_process function.
3262 * @param data The gesture-layer object.
3263 * @param event_info Pointer to recent input event.
3265 * @ingroup Elm_Gesture_Layer
3268 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3271 Widget_Data *wd = elm_widget_data_get(data);
3273 if (((Evas_Event_Mouse_Down *) event_info)->button != 1)
3274 return; /* We only process left-click at the moment */
3276 _event_process(data, obj, event_info, EVAS_CALLBACK_MOUSE_DOWN);
3280 _mouse_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3283 Widget_Data *wd = elm_widget_data_get(data);
3286 _event_process(data, obj, event_info, EVAS_CALLBACK_MOUSE_MOVE);
3290 _key_down_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3293 Widget_Data *wd = elm_widget_data_get(data);
3296 _event_process(data, obj, event_info, EVAS_CALLBACK_KEY_DOWN);
3300 _key_up_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3303 Widget_Data *wd = elm_widget_data_get(data);
3306 _event_process(data, obj, event_info, EVAS_CALLBACK_KEY_UP);
3310 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3313 Widget_Data *wd = elm_widget_data_get(data);
3316 if (((Evas_Event_Mouse_Up *) event_info)->button != 1)
3317 return; /* We only process left-click at the moment */
3319 _event_process(data, obj, event_info, EVAS_CALLBACK_MOUSE_UP);
3323 _mouse_wheel(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3326 Widget_Data *wd = elm_widget_data_get(data);
3329 _event_process(data, obj, event_info, EVAS_CALLBACK_MOUSE_WHEEL);
3333 _multi_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3336 Widget_Data *wd = elm_widget_data_get(data);
3339 _event_process(data, obj, event_info, EVAS_CALLBACK_MULTI_DOWN);
3343 _multi_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3346 Widget_Data *wd = elm_widget_data_get(data);
3349 _event_process(data, obj, event_info, EVAS_CALLBACK_MULTI_MOVE);
3353 _multi_up(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
3356 Widget_Data *wd = elm_widget_data_get(data);
3359 _event_process(data, obj, event_info, EVAS_CALLBACK_MULTI_UP);
3363 elm_gesture_layer_hold_events_get(const Evas_Object *obj)
3365 ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
3367 Widget_Data *wd = elm_widget_data_get(obj);
3368 if (!wd) return EINA_FALSE;
3370 return !wd->repeat_events;
3374 elm_gesture_layer_hold_events_set(Evas_Object *obj, Eina_Bool hold_events)
3376 ELM_CHECK_WIDTYPE(obj, widtype);
3378 Widget_Data *wd = elm_widget_data_get(obj);
3381 wd->repeat_events = !(!!hold_events);
3385 elm_gesture_layer_zoom_step_get(const Evas_Object *obj)
3387 ELM_CHECK_WIDTYPE(obj, widtype) 0;
3389 Widget_Data *wd = elm_widget_data_get(obj);
3392 return wd->zoom_step;
3396 elm_gesture_layer_zoom_step_set(Evas_Object *obj, double step)
3398 ELM_CHECK_WIDTYPE(obj, widtype);
3400 Widget_Data *wd = elm_widget_data_get(obj);
3403 if (step < 0) return;
3405 wd->zoom_step = step;
3409 elm_gesture_layer_rotate_step_get(const Evas_Object *obj)
3411 ELM_CHECK_WIDTYPE(obj, widtype) 0;
3413 Widget_Data *wd = elm_widget_data_get(obj);
3416 return wd->rotate_step;
3420 elm_gesture_layer_rotate_step_set(Evas_Object *obj, double step)
3422 ELM_CHECK_WIDTYPE(obj, widtype);
3424 Widget_Data *wd = elm_widget_data_get(obj);
3427 if (step < 0) return;
3429 wd->rotate_step = step;
3433 elm_gesture_layer_attach(Evas_Object *obj, Evas_Object *target)
3435 ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
3437 Widget_Data *wd = elm_widget_data_get(obj);
3438 if (!wd) return EINA_FALSE;
3440 if (!target) return EINA_FALSE;
3442 /* if was attached before, unregister callbacks first */
3444 _unregister_callbacks(obj);
3446 wd->target = target;
3448 _register_callbacks(obj);
3453 elm_gesture_layer_cb_set(Evas_Object *obj, Elm_Gesture_Type idx,
3454 Elm_Gesture_State cb_type, Elm_Gesture_Event_Cb cb, void *data)
3456 ELM_CHECK_WIDTYPE(obj, widtype);
3458 Widget_Data *wd = elm_widget_data_get(obj);
3462 if (!wd->gesture[idx])
3463 wd->gesture[idx] = calloc(1, sizeof(Gesture_Info));
3464 if (!wd->gesture[idx]) return;
3466 p = wd->gesture[idx];
3469 p->fn[cb_type].cb = cb;
3470 p->fn[cb_type].user_data = data;
3471 p->state = ELM_GESTURE_STATE_UNDEFINED;
3476 _disable_hook(Evas_Object *obj)
3478 if (elm_widget_disabled_get(obj))
3479 _unregister_callbacks(obj);
3481 _register_callbacks(obj);
3485 elm_gesture_layer_add(Evas_Object *parent)
3491 ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
3493 ELM_SET_WIDTYPE(widtype, "gesture_layer");
3494 elm_widget_type_set(obj, "gesture_layer");
3495 elm_widget_sub_object_add(parent, obj);
3496 elm_widget_data_set(obj, wd);
3497 elm_widget_del_hook_set(obj, _del_hook);
3498 elm_widget_disable_hook_set(obj, _disable_hook);
3501 wd->line_min_length =_elm_config->glayer_line_min_length * _elm_config->finger_size;
3502 wd->zoom_distance_tolerance = _elm_config->glayer_zoom_distance_tolerance * _elm_config->finger_size;
3503 wd->line_distance_tolerance = _elm_config->glayer_line_distance_tolerance * _elm_config->finger_size;
3504 wd->zoom_finger_factor = _elm_config->glayer_zoom_finger_factor;
3505 wd->zoom_wheel_factor = _elm_config->glayer_zoom_wheel_factor; /* mouse wheel zoom steps */
3506 wd->rotate_angular_tolerance = _elm_config->glayer_rotate_angular_tolerance;
3507 wd->line_angular_tolerance = _elm_config->glayer_line_angular_tolerance;
3508 wd->flick_time_limit_ms = _elm_config->glayer_flick_time_limit_ms;
3509 wd->long_tap_start_timeout = _elm_config->glayer_long_tap_start_timeout;
3510 wd->repeat_events = EINA_TRUE;
3511 wd->glayer_continues_enable = _elm_config->glayer_continues_enable;
3513 #if defined(DEBUG_GESTURE_LAYER)
3514 printf("size of Gestures = <%d>\n", sizeof(wd->gesture));
3515 printf("initial values:\n\tzoom_finger_factor=<%f>\n\tzoom_distance_tolerance=<%d>\n\tline_min_length=<%d>\n\tline_distance_tolerance=<%d>\n\tzoom_wheel_factor=<%f>\n\trotate_angular_tolerance=<%f>\n\twd->line_angular_tolerance=<%f>\n\twd->flick_time_limit_ms=<%d>\n\twd->long_tap_start_timeout=<%f>\n\twd->zoom_step=<%f>\n\twd->rotate_step=<%f>\n\twd->glayer_continues_enable=<%d>\n ", wd->zoom_finger_factor, wd->zoom_distance_tolerance, wd->line_min_length, wd->line_distance_tolerance, wd->zoom_wheel_factor, wd->rotate_angular_tolerance, wd->line_angular_tolerance, wd->flick_time_limit_ms, wd->long_tap_start_timeout, wd->zoom_step, wd->rotate_step, wd->glayer_continues_enable);
3517 memset(wd->gesture, 0, sizeof(wd->gesture));