1 #include <Elementary.h>
5 * @defgroup Button Button
7 * This is a push-button. Press it and run some function. It can contain
8 * a simple label and icon object.
11 typedef struct _Widget_Data Widget_Data;
15 Evas_Object *btn, *icon;
24 static const char *widtype = NULL;
25 static void _del_hook(Evas_Object *obj);
26 static void _theme_hook(Evas_Object *obj);
27 static void _disable_hook(Evas_Object *obj);
28 static void _sizing_eval(Evas_Object *obj);
29 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
30 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
31 static void _signal_clicked(void *data, Evas_Object *obj, const char *emission, const char *source);
32 static void _signal_pressed(void *data, Evas_Object *obj, const char *emission, const char *source);
33 static void _signal_unpressed(void *data, Evas_Object *obj, const char *emission, const char *source);
34 static void _on_focus_hook(void *data, Evas_Object *obj);
35 static void _activate(Evas_Object *obj);
36 static void _activate_hook(Evas_Object *obj);
37 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
38 Evas_Callback_Type type, void *event_info);
40 static const char SIG_CLICKED[] = "clicked";
41 static const char SIG_REPEATED[] = "repeated";
42 static const char SIG_UNPRESSED[] = "unpressed";
43 static const Evas_Smart_Cb_Description _signals[] = {
51 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
53 if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
54 Evas_Event_Key_Down *ev = event_info;
55 Widget_Data *wd = elm_widget_data_get(obj);
56 if (!wd) return EINA_FALSE;
57 if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
58 if (elm_widget_disabled_get(obj)) return EINA_FALSE;
59 if (strcmp(ev->keyname, "Return") && strcmp(ev->keyname, "space"))
62 ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
63 edje_object_signal_emit(wd->btn, "elm,anim,activate", "elm");
68 _del_hook(Evas_Object *obj)
70 Widget_Data *wd = elm_widget_data_get(obj);
72 if (wd->label) eina_stringshare_del(wd->label);
77 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
79 Widget_Data *wd = elm_widget_data_get(obj);
81 if (elm_widget_focus_get(obj))
83 edje_object_signal_emit(wd->btn, "elm,action,focus", "elm");
84 evas_object_focus_set(wd->btn, EINA_TRUE);
88 edje_object_signal_emit(wd->btn, "elm,action,unfocus", "elm");
89 evas_object_focus_set(wd->btn, EINA_FALSE);
94 _theme_hook(Evas_Object *obj)
96 Widget_Data *wd = elm_widget_data_get(obj);
98 _elm_theme_object_set(obj, wd->btn, "button", "base", elm_widget_style_get(obj));
100 edje_object_part_swallow(wd->btn, "elm.swallow.content", wd->icon);
102 edje_object_signal_emit(wd->btn, "elm,state,text,visible", "elm");
104 edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
106 edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
108 edje_object_signal_emit(wd->btn, "elm,state,icon,hidden", "elm");
109 edje_object_part_text_set(wd->btn, "elm.text", wd->label);
110 edje_object_message_signal_process(wd->btn);
111 edje_object_scale_set(wd->btn, elm_widget_scale_get(obj) * _elm_config->scale);
116 _disable_hook(Evas_Object *obj)
118 Widget_Data *wd = elm_widget_data_get(obj);
120 if (elm_widget_disabled_get(obj))
121 edje_object_signal_emit(wd->btn, "elm,state,disabled", "elm");
123 edje_object_signal_emit(wd->btn, "elm,state,enabled", "elm");
127 _sizing_eval(Evas_Object *obj)
129 Widget_Data *wd = elm_widget_data_get(obj);
130 Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
133 elm_coords_finger_size_adjust(1, &minw, 1, &minh);
134 edje_object_size_min_restricted_calc(wd->btn, &minw, &minh, minw, minh);
135 elm_coords_finger_size_adjust(1, &minw, 1, &minh);
136 evas_object_size_hint_min_set(obj, minw, minh);
137 evas_object_size_hint_max_set(obj, maxw, maxh);
141 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
143 Widget_Data *wd = elm_widget_data_get(data);
145 if (obj != wd->icon) return;
150 _sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
152 Widget_Data *wd = elm_widget_data_get(obj);
153 Evas_Object *sub = event_info;
157 edje_object_signal_emit(wd->btn, "elm,state,icon,hidden", "elm");
158 evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
159 _changed_size_hints, obj);
161 edje_object_message_signal_process(wd->btn);
167 _activate(Evas_Object *obj)
169 Widget_Data *wd = elm_widget_data_get(obj);
173 ecore_timer_del(wd->timer);
176 wd->repeating = EINA_FALSE;
177 evas_object_smart_callback_call(obj, SIG_CLICKED, NULL);
178 _signal_unpressed(obj, wd->btn, NULL, NULL); /* safe guard when the theme does not emit the 'unpress' signal */
182 _activate_hook(Evas_Object *obj)
188 _signal_clicked(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
194 _autorepeat_send(void *data)
196 Widget_Data *wd = elm_widget_data_get(data);
197 if (!wd) return ECORE_CALLBACK_CANCEL;
199 evas_object_smart_callback_call(data, SIG_REPEATED, NULL);
203 return ECORE_CALLBACK_CANCEL;
206 return ECORE_CALLBACK_RENEW;
210 _autorepeat_initial_send(void *data)
212 Widget_Data *wd = elm_widget_data_get(data);
213 if (!wd) return ECORE_CALLBACK_CANCEL;
215 if (wd->timer) ecore_timer_del(wd->timer);
216 wd->repeating = EINA_TRUE;
217 _autorepeat_send(data);
218 wd->timer = ecore_timer_add(wd->ar_interval, _autorepeat_send, data);
220 return ECORE_CALLBACK_CANCEL;
224 _signal_pressed(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
226 Widget_Data *wd = elm_widget_data_get(data);
229 if (wd->autorepeat && !wd->repeating)
231 if (wd->ar_threshold <= 0.0)
232 _autorepeat_initial_send(data); /* call immediately */
234 wd->timer = ecore_timer_add(wd->ar_threshold, _autorepeat_initial_send, data);
239 _signal_unpressed(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
241 Widget_Data *wd = elm_widget_data_get(data);
246 ecore_timer_del(wd->timer);
249 wd->repeating = EINA_FALSE;
250 evas_object_smart_callback_call(data, SIG_UNPRESSED, NULL);
254 * Add a new button to the parent
255 * @param parent The parent object
256 * @return The new object or NULL if it cannot be created
261 elm_button_add(Evas_Object *parent)
267 wd = ELM_NEW(Widget_Data);
268 e = evas_object_evas_get(parent);
269 obj = elm_widget_add(e);
270 ELM_SET_WIDTYPE(widtype, "button");
271 elm_widget_type_set(obj, "button");
272 elm_widget_sub_object_add(parent, obj);
273 elm_widget_on_focus_hook_set( obj, _on_focus_hook, NULL );
274 elm_widget_data_set(obj, wd);
275 elm_widget_del_hook_set(obj, _del_hook);
276 elm_widget_theme_hook_set(obj, _theme_hook);
277 elm_widget_disable_hook_set(obj, _disable_hook);
278 elm_widget_can_focus_set(obj, 1);
279 elm_widget_activate_hook_set(obj, _activate_hook);
280 elm_widget_event_hook_set(obj, _event_hook);
282 wd->btn = edje_object_add(e);
283 _elm_theme_object_set(obj, wd->btn, "button", "base", "default");
284 edje_object_signal_callback_add(wd->btn, "elm,action,click", "",
285 _signal_clicked, obj);
286 edje_object_signal_callback_add(wd->btn, "elm,action,press", "",
287 _signal_pressed, obj);
288 edje_object_signal_callback_add(wd->btn, "elm,action,unpress", "",
289 _signal_unpressed, obj);
290 elm_widget_resize_object_set(obj, wd->btn);
292 evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
296 // TODO: convert Elementary to subclassing of Evas_Smart_Class
297 // TODO: and save some bytes, making descriptions per-class and not instance!
298 evas_object_smart_callbacks_descriptions_set(obj, _signals);
303 * Set the label used in the button
305 * @param obj The button object
306 * @param label The text will be written on the button
311 elm_button_label_set(Evas_Object *obj, const char *label)
313 ELM_CHECK_WIDTYPE(obj, widtype);
314 Widget_Data *wd = elm_widget_data_get(obj);
316 eina_stringshare_replace(&wd->label, label);
318 edje_object_signal_emit(wd->btn, "elm,state,text,visible", "elm");
320 edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
321 edje_object_message_signal_process(wd->btn);
322 edje_object_part_text_set(wd->btn, "elm.text", label);
327 elm_button_label_get(const Evas_Object *obj)
329 ELM_CHECK_WIDTYPE(obj, widtype) NULL;
330 Widget_Data *wd = elm_widget_data_get(obj);
331 if (!wd) return NULL;
336 * Set the icon used for the button
338 * Once the icon object is set, a previously set one will be deleted
340 * @param obj The button object
341 * @param icon The image for the button
346 elm_button_icon_set(Evas_Object *obj, Evas_Object *icon)
348 ELM_CHECK_WIDTYPE(obj, widtype);
349 Widget_Data *wd = elm_widget_data_get(obj);
351 if (wd->icon == icon) return;
352 if (wd->icon) evas_object_del(wd->icon);
356 elm_widget_sub_object_add(obj, icon);
357 evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
358 _changed_size_hints, obj);
359 edje_object_part_swallow(wd->btn, "elm.swallow.content", icon);
360 edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
361 edje_object_message_signal_process(wd->btn);
367 * Get the icon used for the button
369 * @param obj The button object
370 * @return The image for the button
375 elm_button_icon_get(const Evas_Object *obj)
377 ELM_CHECK_WIDTYPE(obj, widtype) NULL;
378 Widget_Data *wd = elm_widget_data_get(obj);
379 if (!wd) return NULL;
384 * Turn on/off the autorepeat event generated when the user keeps pressing on the button
386 * @param obj The button object
387 * @param on A bool to turn on/off the event
392 elm_button_autorepeat_set(Evas_Object *obj, Eina_Bool on)
394 ELM_CHECK_WIDTYPE(obj, widtype);
395 Widget_Data *wd = elm_widget_data_get(obj);
399 ecore_timer_del(wd->timer);
403 wd->repeating = EINA_FALSE;
407 * Set the initial timeout before the autorepeat event is generated
409 * @param obj The button object
415 elm_button_autorepeat_initial_timeout_set(Evas_Object *obj, double t)
417 ELM_CHECK_WIDTYPE(obj, widtype);
418 Widget_Data *wd = elm_widget_data_get(obj);
420 if (wd->ar_threshold == t) return;
423 ecore_timer_del(wd->timer);
426 wd->ar_threshold = t;
430 * Set the interval between each generated autorepeat event
432 * @param obj The button object
438 elm_button_autorepeat_gap_timeout_set(Evas_Object *obj, double t)
440 ELM_CHECK_WIDTYPE(obj, widtype);
441 Widget_Data *wd = elm_widget_data_get(obj);
443 if (wd->ar_interval == t) return;
446 if (wd->repeating && wd->timer) ecore_timer_interval_set(wd->timer, t);