1 #include <Elementary.h>
5 * @defgroup Pager Pager
8 * The pager is an object that allows flipping (with animation) between 1 or
9 * more ?
\9cpages??of objects, much like a stack of windows within the window.
11 * Objects can be pushed or popped from he stack or deleted as normal.
12 * Pushes and pops will animate (and a pop will delete the object once the
13 * animation is finished). Any object in the pager can be promoted to the top
14 * (from its current stacking position) as well. Objects are pushed to the
15 * top with elm_pager_content_push() and when the top item is no longer
16 * wanted, simply pop it with elm_pager_content_pop() and it will also be
17 * deleted. Any object you wish to promote to the top that is already in the
18 * pager, simply use elm_pager_content_promote(). If an object is no longer
19 * needed and is not the top item, just delete it as normal. You can query
20 * which objects are the top and bottom with elm_pager_content_bottom_get()
21 * and elm_pager_content_top_get().
24 typedef struct _Widget_Data Widget_Data;
25 typedef struct _Item Item;
31 Evas_Object *rect, *clip;
36 Evas_Object *obj, *base, *content;
37 Evas_Coord minw, minh;
41 static const char *widtype = NULL;
42 static void _del_hook(Evas_Object *obj);
43 static void _theme_hook(Evas_Object *obj);
44 static void _sizing_eval(Evas_Object *obj);
45 static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
46 static void _sub_del(void *data, Evas_Object *obj, void *event_info);
49 _del_hook(Evas_Object *obj)
51 Widget_Data *wd = elm_widget_data_get(obj);
57 _theme_hook(Evas_Object *obj)
59 Widget_Data *wd = elm_widget_data_get(obj);
63 EINA_LIST_FOREACH(wd->stack, l, it)
64 edje_object_scale_set(it->base, elm_widget_scale_get(obj) *
70 _sizing_eval(Evas_Object *obj)
72 Widget_Data *wd = elm_widget_data_get(obj);
73 Evas_Coord minw = -1, minh = -1;
77 EINA_LIST_FOREACH(wd->stack, l, it)
79 if (it->minw > minw) minw = it->minw;
80 if (it->minh > minh) minh = it->minh;
82 evas_object_size_hint_min_set(obj, minw, minh);
83 evas_object_size_hint_max_set(obj, -1, -1);
87 _changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
90 Evas_Coord minw = -1, minh = -1;
91 evas_object_size_hint_min_get(it->content, &minw, &minh);
92 // FIXME: why is this needed? how does edje get this unswallowed or
93 // lose its callbacks to edje
94 edje_object_part_swallow(it->base, "elm.swallow.content", it->content);
95 edje_object_size_min_calc(it->base, &it->minw, &it->minh);
96 _sizing_eval(it->obj);
100 _eval_top(Evas_Object *obj)
102 Widget_Data *wd = elm_widget_data_get(obj);
103 Eina_Bool animate=EINA_TRUE;
106 if (!wd->stack) return;
107 ittop = eina_list_last(wd->stack)->data;
108 if (ittop != wd->top)
111 const char *onshow, *onhide;
117 edje_object_signal_emit(o, "elm,action,pop", "elm");
119 edje_object_signal_emit(o, "elm,action,hide", "elm");
120 onhide = edje_object_data_get(o, "onhide");
123 if (!strcmp(onhide, "raise")) evas_object_raise(o);
124 else if (!strcmp(onhide, "lower")) evas_object_lower(o);
129 animate = EINA_FALSE;
131 wd->oldtop = wd->top;
136 edje_object_signal_emit(o, "elm,action,show,noanimate", "elm");
137 else if (wd->oldtop && wd->oldtop->popme)
138 edje_object_signal_emit(o, "elm,action,show", "elm");
140 edje_object_signal_emit(o, "elm,action,push", "elm");
141 onshow = edje_object_data_get(o, "onshow");
144 if (!strcmp(onshow, "raise")) evas_object_raise(o);
145 else if (!strcmp(onshow, "lower")) evas_object_lower(o);
151 _move(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
153 Widget_Data *wd = elm_widget_data_get(data);
158 evas_object_geometry_get(obj, &x, &y, NULL, NULL);
159 EINA_LIST_FOREACH(wd->stack, l, it)
160 evas_object_move(it->base, x, y);
164 _sub_del(void *data, Evas_Object *obj __UNUSED__, void *event_info)
166 Widget_Data *wd = elm_widget_data_get(data);
167 Evas_Object *sub = event_info;
171 EINA_LIST_FOREACH(wd->stack, l, it)
173 if (it->content == sub)
175 wd->stack = eina_list_remove_list(wd->stack, l);
176 evas_object_event_callback_del_full
177 (sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, it);
178 evas_object_del(it->base);
187 _resize(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
189 Widget_Data *wd = elm_widget_data_get(data);
194 evas_object_geometry_get(obj, NULL, NULL, &w, &h);
195 EINA_LIST_FOREACH(wd->stack, l, it) evas_object_resize(it->base, w, h);
199 _signal_hide_finished(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
202 Evas_Object *obj2 = it->obj;
203 evas_object_hide(it->base);
204 edje_object_signal_emit(it->base, "elm,action,reset", "elm");
205 evas_object_smart_callback_call(obj2, "hide,finished", it->content);
206 edje_object_message_signal_process(it->base);
207 if (it->popme) evas_object_del(it->content);
212 * Add a new pager to the parent
214 * @param parent The parent object
215 * @return The new object or NULL if it cannot be created
220 elm_pager_add(Evas_Object *parent)
226 wd = ELM_NEW(Widget_Data);
227 e = evas_object_evas_get(parent);
228 obj = elm_widget_add(e);
229 ELM_SET_WIDTYPE(widtype, "pager");
230 elm_widget_type_set(obj, "pager");
231 elm_widget_sub_object_add(parent, obj);
232 elm_widget_data_set(obj, wd);
233 elm_widget_del_hook_set(obj, _del_hook);
234 elm_widget_theme_hook_set(obj, _theme_hook);
236 wd->clip = evas_object_rectangle_add(e);
237 elm_widget_resize_object_set(obj, wd->clip);
238 elm_widget_sub_object_add(obj, wd->clip);
240 wd->rect = evas_object_rectangle_add(e);
241 elm_widget_sub_object_add(obj, wd->rect);
242 evas_object_color_set(wd->rect, 255, 255, 255, 0);
243 evas_object_clip_set(wd->rect, wd->clip);
245 evas_object_event_callback_add(obj, EVAS_CALLBACK_MOVE, _move, obj);
246 evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _resize, obj);
248 evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
255 * Push an object to the top of the pager stack (and show it)
257 * The object pushed becomes a child of the pager and will be controlled
258 * it and deleted when the pager is deleted.
260 * @param obj The pager object
261 * @param content The object to push
266 elm_pager_content_push(Evas_Object *obj, Evas_Object *content)
268 ELM_CHECK_WIDTYPE(obj, widtype);
269 Widget_Data *wd = elm_widget_data_get(obj);
270 Item *it = ELM_NEW(Item);
271 Evas_Coord x, y, w, h;
275 it->content = content;
276 it->base = edje_object_add(evas_object_evas_get(obj));
277 evas_object_smart_member_add(it->base, obj);
278 evas_object_geometry_get(obj, &x, &y, &w, &h);
279 evas_object_move(it->base, x, y);
280 evas_object_resize(it->base, w, h);
281 evas_object_clip_set(it->base, wd->clip);
282 elm_widget_sub_object_add(obj, it->base);
283 elm_widget_sub_object_add(obj, it->content);
284 _elm_theme_object_set(obj, it->base, "pager", "base", elm_widget_style_get(obj));
285 edje_object_signal_callback_add(it->base, "elm,action,hide,finished", "",
286 _signal_hide_finished, it);
287 evas_object_event_callback_add(it->content,
288 EVAS_CALLBACK_CHANGED_SIZE_HINTS,
289 _changed_size_hints, it);
290 edje_object_part_swallow(it->base, "elm.swallow.content", it->content);
291 edje_object_size_min_calc(it->base, &it->minw, &it->minh);
292 evas_object_data_set(it->base, "_elm_leaveme", obj);
293 evas_object_show(it->content);
294 wd->stack = eina_list_append(wd->stack, it);
300 * Pop the object that is on top of the stack
302 * This pops the object that is on top (visible) in the pager, makes it
303 * disappear, then deletes the object. The object that was underneath it
304 * on the stack will become visible.
306 * @param obj The pager object
311 elm_pager_content_pop(Evas_Object *obj)
313 ELM_CHECK_WIDTYPE(obj, widtype);
314 Widget_Data *wd = elm_widget_data_get(obj);
318 if (!wd->stack) return;
319 it = eina_list_last(wd->stack)->data;
320 it->popme = EINA_TRUE;
321 ll = eina_list_last(wd->stack);
332 edje_object_signal_emit(o, "elm,action,pop", "elm");
333 onhide = edje_object_data_get(o, "onhide");
336 if (!strcmp(onhide, "raise")) evas_object_raise(o);
337 else if (!strcmp(onhide, "lower")) evas_object_lower(o);
344 elm_pager_content_promote(obj, it->content);
351 Evas_Object *obj = data;
352 evas_object_del(obj);
356 * Pop to the object that is on the stack
358 * This pops the objects that are on the stack, makes them
359 * disappear, then deletes the objects. The content will become visible.
361 * @param obj The pager object
362 * @param content The object to show
367 elm_pager_to_content_pop(Evas_Object *obj, Evas_Object *content)
369 ELM_CHECK_WIDTYPE(obj, widtype);
370 Widget_Data *wd = elm_widget_data_get(obj);
374 if (!wd->stack) return;
375 it = eina_list_last(wd->stack)->data;
376 it->popme = EINA_TRUE;
377 ll = eina_list_last(wd->stack);
383 if(it->content != content)
385 wd->stack = eina_list_remove_list(wd->stack, ll);
386 ecore_job_add(_del_job, it->content);
398 * Promote an object already in the pager stack to the top of the stack
400 * This will take the indicated object and promote it to the top of the stack
401 * as if it had been pushed there. The object must already be inside the
402 * pager stack to work.
404 * @param obj The pager object
405 * @param content The object to promote
410 elm_pager_content_promote(Evas_Object *obj, Evas_Object *content)
412 ELM_CHECK_WIDTYPE(obj, widtype);
413 Widget_Data *wd = elm_widget_data_get(obj);
417 EINA_LIST_FOREACH(wd->stack, l, it)
419 if (it->content == content)
421 wd->stack = eina_list_remove_list(wd->stack, l);
422 wd->stack = eina_list_append(wd->stack, it);
430 * Return the object at the bottom of the pager stack
432 * @param obj The pager object
433 * @return The bottom object or NULL if none
438 elm_pager_content_bottom_get(const Evas_Object *obj)
440 ELM_CHECK_WIDTYPE(obj, widtype) NULL;
441 Widget_Data *wd = elm_widget_data_get(obj);
443 if (!wd) return NULL;
444 if (!wd->stack) return NULL;
445 it = wd->stack->data;
450 * Return the object at the top of the pager stack
452 * @param obj The pager object
453 * @return The top object or NULL if none
458 elm_pager_content_top_get(const Evas_Object *obj)
460 ELM_CHECK_WIDTYPE(obj, widtype) NULL;
461 Widget_Data *wd = elm_widget_data_get(obj);
463 if (!wd) return NULL;
464 if (!wd->stack) return NULL;
465 it = eina_list_last(wd->stack)->data;