forked from enlightenment/efl
581 lines
14 KiB
C
581 lines
14 KiB
C
/*
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* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
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*/
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#include <Elementary.h>
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#include "elm_priv.h"
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/**
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* @defgroup Slideshow slideshow
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*
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* This object display a list of object (generally a list of images) and some actions like
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* next/previous are used to navigate. The animations are defined in the theme,
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* consequently new animations can be added without having to update the
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* applications.
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*
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* The slideshow use 2 callbacks to create and delete the objects displayed. When an item is displayed the function itc->func.get() is called. This function should create the object, for example the object can be an evas_object_image or a photocam. When a object is no more displayed the function itc->func.del() is called, the user can delete or hide the object here. If itc->func.del is NULL the slideshow delete the object with evas_object_del().
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*/
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typedef struct _Widget_Data Widget_Data;
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struct _Elm_Slideshow_Item
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{
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Evas_Object *obj;
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Eina_List *l, *l_built;
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const void *data;
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const Elm_Slideshow_Item_Class *itc;
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Evas_Object *o;
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};
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struct _Widget_Data
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{
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Evas_Object *slideshow;
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// list of Elm_Slideshow_Item*
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Eina_List *items;
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Eina_List *items_built;
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Elm_Slideshow_Item *current;
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Elm_Slideshow_Item *previous;
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int loop;
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Eina_List *transitions;
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const char *transition;
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Ecore_Timer *timer;
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int timeout;
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};
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static void _del_hook(Evas_Object *obj);
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static void _theme_hook(Evas_Object *obj);
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static void _sizing_eval(Evas_Object *obj);
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static void _changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info);
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static int _timer_cb(void *data);
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static void
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_del_hook(Evas_Object *obj)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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elm_slideshow_clear(obj);
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_stringlist_free(wd->transitions);
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if (wd->timer) ecore_timer_del(wd->timer);
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free(wd);
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}
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static void
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_theme_hook(Evas_Object *obj)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return;
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_elm_theme_set(wd->slideshow, "slideshow", "base", "default");
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edje_object_scale_set(wd->slideshow, elm_widget_scale_get(obj) *
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_elm_config->scale);
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_sizing_eval(obj);
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}
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static void
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_sizing_eval(Evas_Object *obj)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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Evas_Coord minw = -1, minh = -1;
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edje_object_size_min_calc(wd->slideshow, &minw, &minh);
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evas_object_size_hint_min_set(obj, minw, minh);
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evas_object_size_hint_max_set(obj, minw, minh);
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}
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static void
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_changed_size_hints(void *data, Evas *e, Evas_Object *obj, void *event_info)
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{
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_sizing_eval(data);
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}
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static void
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_sub_del(void *data, Evas_Object *obj, void *event_info)
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{
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;
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}
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static void
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_end(void *data, Evas_Object *obj, const char *emission, const char *source)
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{
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Elm_Slideshow_Item *item;
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Widget_Data *wd = elm_widget_data_get(data);
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item = wd->previous;
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if(item && item->o)
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{
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edje_object_part_unswallow(NULL, item->o);
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evas_object_hide(item->o);
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}
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wd->previous = NULL;
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item = wd->current;
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if(!item || !item->o) return;
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edje_object_part_unswallow(NULL, item->o);
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edje_object_part_swallow(wd->slideshow, "elm.swallow.1", item->o);
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evas_object_show(item->o);
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}
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static int
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_timer_cb(void *data)
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{
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Evas_Object *obj = data;
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Widget_Data *wd = elm_widget_data_get(obj);
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wd->timer = NULL;
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elm_slideshow_next(obj);
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return 0;
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}
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static void
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_item_realize(Elm_Slideshow_Item *item)
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{
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Elm_Slideshow_Item *_item;
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Evas_Object *obj = item->obj;
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Widget_Data *wd = elm_widget_data_get(obj);
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Evas_Coord w, h;
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if(!item->o && item->itc->func.get)
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{
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item->o = item->itc->func.get((void*)item->data, obj);
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evas_object_smart_member_add(item->o, obj);
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item->l_built = eina_list_append(NULL, item);
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wd->items_built = eina_list_merge(wd->items_built, item->l_built);
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}
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else if(item->l_built)
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wd->items_built = eina_list_demote_list(wd->items_built, item->l_built);
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//we pre built the next and the previous item
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evas_object_geometry_get(obj, NULL, NULL, &w, &h);
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_item = eina_list_data_get(eina_list_prev(item->l));
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if(!_item && wd->loop)
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_item = eina_list_data_get(eina_list_last(item->l));
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if(_item && !_item->o && _item->itc->func.get)
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{
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_item->o = _item->itc->func.get((void*)_item->data, obj);
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evas_object_hide(_item->o);
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evas_object_resize(_item->o, w, h);
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evas_object_smart_member_add(_item->o, obj);
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_item->l_built = eina_list_append(NULL, _item);
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wd->items_built = eina_list_merge(wd->items_built, _item->l_built);
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}
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else if(_item && _item->l_built)
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wd->items_built = eina_list_demote_list(wd->items_built, _item->l_built);
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_item = eina_list_data_get(eina_list_next(item->l));
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if(!_item && wd->loop)
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_item = eina_list_data_get(wd->items);
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if(_item && !_item->o && _item->itc->func.get)
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{
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_item->o = _item->itc->func.get((void*)_item->data, obj);
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evas_object_hide(_item->o);
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evas_object_resize(_item->o, w, h);
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evas_object_smart_member_add(_item->o, obj);
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_item->l_built = eina_list_append(NULL, _item);
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wd->items_built = eina_list_merge(wd->items_built, _item->l_built);
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}
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else if(_item && _item->l_built)
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wd->items_built = eina_list_demote_list(wd->items_built, _item->l_built);
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//only the three last items are keep
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while(eina_list_count(wd->items_built) > 3)
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{
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_item = eina_list_data_get(wd->items_built);
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wd->items_built = eina_list_remove_list(wd->items_built, wd->items_built);
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if(item->itc->func.del)
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item->itc->func.del((void*)item->data, _item->o);
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else
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evas_object_del(_item->o);
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_item->o = NULL;
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}
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}
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/**
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* Add a new slideshow to the parent
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*
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* @param parent The parent object
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* @return The new object or NULL if it cannot be created
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*
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* @ingroup Slideshow
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*/
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EAPI Evas_Object *
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elm_slideshow_add(Evas_Object *parent)
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{
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Evas_Object *obj;
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Evas *e;
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Widget_Data *wd;
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wd = ELM_NEW(Widget_Data);
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e = evas_object_evas_get(parent);
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obj = elm_widget_add(e);
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elm_widget_type_set(obj, "slideshow");
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elm_widget_sub_object_add(parent, obj);
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elm_widget_data_set(obj, wd);
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elm_widget_del_hook_set(obj, _del_hook);
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elm_widget_theme_hook_set(obj, _theme_hook);
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wd->current = NULL;
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wd->previous = NULL;
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wd->slideshow = edje_object_add(e);
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_elm_theme_set(wd->slideshow, "slideshow", "base", "default");
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elm_widget_resize_object_set(obj, wd->slideshow);
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evas_object_show(wd->slideshow);
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wd->transitions = _stringlist_get(edje_object_data_get(wd->slideshow, "transitions"));
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if(eina_list_count(wd->transitions) > 0)
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wd->transition = eina_stringshare_add(eina_list_data_get(wd->transitions));
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edje_object_signal_callback_add(wd->slideshow, "end", "slideshow", _end, obj);
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evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
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evas_object_event_callback_add(obj, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _changed_size_hints, obj);
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_sizing_eval(obj);
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return obj;
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}
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/**
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* Add a object in the list. The object can be a evas object image or a elm photo for example.
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*
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* @param obj The slideshow object
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* @aram itc Callbacks used to create/delete the object. If itc->del.del is NULL, the object will be destroyed with evas_object_del()
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* @param data Data used by the user to identified the item
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* @return Returns The slideshow item
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*/
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EAPI Elm_Slideshow_Item*
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elm_slideshow_item_add(Evas_Object *obj, const Elm_Slideshow_Item_Class *itc, const void *data)
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{
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Elm_Slideshow_Item *item;
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return NULL;
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item = calloc(1, sizeof(Elm_Slideshow_Item));
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item->data = data;
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item->itc = itc;
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item->obj = obj;
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item->l = eina_list_append(item->l, item);
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wd->items = eina_list_merge(wd->items, item->l);
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if(!wd->current)
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elm_slideshow_show(item);
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return item;
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}
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/**
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* Go to the item
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*
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* @param obj The slideshow object
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* @param item The item
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*/
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EAPI void
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elm_slideshow_show(Elm_Slideshow_Item *item)
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{
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Widget_Data *wd = elm_widget_data_get(item->obj);
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if (!wd) return;
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if(item == wd->current) return;
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_end(item->obj, item->obj, NULL, NULL);
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wd->previous = wd->current;
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wd->current = item;
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_item_realize(item);
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_end(item->obj, item->obj, NULL, NULL);
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}
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/**
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* Go to the next item
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*
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* @param obj The slideshow object
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*/
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EAPI void
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elm_slideshow_next(Evas_Object *obj)
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{
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char buf[1024];
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Elm_Slideshow_Item *next = NULL;
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Widget_Data *wd = elm_widget_data_get(obj);
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if (!wd) return;
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if(wd->current)
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next = eina_list_data_get(eina_list_next(wd->current->l));
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if(wd->current && !next && wd->loop)
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next = eina_list_data_get(wd->items);
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if(!next || next == wd->current) return;
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_end(obj, obj, NULL, NULL);
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if (wd->timer) ecore_timer_del(wd->timer);
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if(wd->timeout>0)
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wd->timer = ecore_timer_add(wd->timeout, _timer_cb, obj);
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_item_realize(next);
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edje_object_part_swallow(wd->slideshow, "elm.swallow.2", next->o);
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evas_object_show(next->o);
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snprintf(buf, 1024, "%s,next", wd->transition);
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edje_object_signal_emit(wd->slideshow, buf, "slideshow");
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wd->previous = wd->current;
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wd->current = next;
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}
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/**
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* Go to the previous item
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*
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* @param obj The slideshow object
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*/
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EAPI void
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elm_slideshow_previous(Evas_Object *obj)
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{
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char buf[1024];
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Elm_Slideshow_Item *prev;
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Widget_Data *wd = elm_widget_data_get(obj);
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if (!wd) return;
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if(wd->current)
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prev = eina_list_data_get(eina_list_prev(wd->current->l));
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if(wd->current && !prev && wd->loop)
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prev = eina_list_data_get(eina_list_last(wd->items));
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if(!prev || prev == wd->current) return;
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_end(obj, obj, NULL, NULL);
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if (wd->timer) ecore_timer_del(wd->timer);
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if(wd->timeout>0)
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wd->timer = ecore_timer_add(wd->timeout, _timer_cb, obj);
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_item_realize(prev);
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edje_object_part_swallow(wd->slideshow, "elm.swallow.2", prev->o);
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evas_object_show(prev->o);
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snprintf(buf, 1024, "%s,previous", wd->transition);
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edje_object_signal_emit(wd->slideshow, buf, "slideshow");
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wd->previous = wd->current;
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wd->current = prev;
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}
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/**
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* Returns the list of transitions available.
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*
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* @param obj The slideshow object
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* @return Returns the list of transitions (list of char*)
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*/
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const Eina_List *
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elm_slideshow_transitions_get(Evas_Object *obj)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return NULL;
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return wd->transitions;
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}
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/**
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* Set the transition to use
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*
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* @param obj The slideshow object
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* @param transition the new transition
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*/
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EAPI void
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elm_slideshow_transition_set(Evas_Object *obj, const char *transition)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return;
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eina_stringshare_del(wd->transition);
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wd->transition = eina_stringshare_add(transition);
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}
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/**
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* The slideshow can go to the next item automatically after a few seconds.
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* This method set the timeout to use. A timeout <=0 disable the timer.
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*
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* @param obj The slideshow object
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* @param timeout The new timeout
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*/
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EAPI void
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elm_slideshow_timeout_set(Evas_Object *obj ,int timeout)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return;
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wd->timeout = timeout;
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if (wd->timer) ecore_timer_del(wd->timer);
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wd->timer = NULL;
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if (timeout>0)
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wd->timer = ecore_timer_add(timeout, _timer_cb, obj);
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}
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/**
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* Returns the timeout value
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*
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* @param obj The slideshow object
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* @return Returns the timeout
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*/
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EAPI int
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elm_slideshow_timeout_get(Evas_Object *obj)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return -1;
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return wd->timeout;
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}
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/**
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* Set if the first item should follow the last and vice versa
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*
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* @param obj The slideshow object
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* @param loop if 1, the first item will follow the last and vice versa
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*/
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EAPI void
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elm_slideshow_loop_set(Evas_Object *obj, int loop)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return;
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wd->loop = loop;
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}
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/**
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* Delete all the items
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*
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* @param obj The slideshow object
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*/
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EAPI void
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elm_slideshow_clear(Evas_Object *obj)
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{
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Elm_Slideshow_Item *item;
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Widget_Data *wd = elm_widget_data_get(obj);
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if(!wd) return;
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wd->previous = NULL;
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wd->current = NULL;
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EINA_LIST_FREE(wd->items_built, item)
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{
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if(item->itc->func.del)
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item->itc->func.del((void*)item->data, item->o);
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else
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evas_object_del(item->o);
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}
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EINA_LIST_FREE(wd->items, item)
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{
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free(item);
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}
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}
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/**
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* Delete the item
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*
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* @param item The slideshow item
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*/
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EAPI void
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elm_slideshow_item_del(Elm_Slideshow_Item *item)
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{
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if(!item) return;
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Widget_Data *wd = elm_widget_data_get(item->obj);
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if(wd->previous == item) wd->previous = NULL;
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if(wd->current == item)
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{
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wd->current = NULL;
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Eina_List *l = eina_list_data_find_list(wd->items, item);
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Eina_List *l2 = eina_list_next(l);
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if(!l2)
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l2 = eina_list_nth_list(wd->items, eina_list_count(wd->items)-1);
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if(l2)
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elm_slideshow_show(eina_list_data_get(l2));
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|
}
|
|
|
|
wd->items = eina_list_remove_list(wd->items, item->l);
|
|
wd->items_built = eina_list_remove_list(wd->items_built, item->l_built);
|
|
|
|
if(item->o && item->itc->func.del)
|
|
item->itc->func.del((void*)item->data, wd->previous->o);
|
|
else if(item->o)
|
|
evas_object_del(item->o);
|
|
|
|
free(item);
|
|
}
|
|
|
|
/**
|
|
* Returns the list of items
|
|
* @param obj The slideshow object
|
|
* @return Returns the list of items (list of Elm_Slideshow_Item).
|
|
*/
|
|
EAPI const Eina_List*
|
|
elm_slideshow_items_get(const Evas_Object *obj)
|
|
{
|
|
Widget_Data *wd = elm_widget_data_get(obj);
|
|
|
|
if (!wd) return NULL;
|
|
return wd->items;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current item displayed
|
|
*
|
|
* @param obj The slideshow object
|
|
* @return Returns the current item displayed
|
|
*/
|
|
EAPI Elm_Slideshow_Item*
|
|
elm_slideshow_item_current_get(Evas_Object *obj)
|
|
{
|
|
Widget_Data *wd = elm_widget_data_get(obj);
|
|
|
|
if (!wd) return NULL;
|
|
return wd->current;
|
|
}
|
|
|
|
/**
|
|
* Returns the evas object associated to an item
|
|
*
|
|
* @param item The slideshow item
|
|
* @return Returns the evas object associated to this item
|
|
*/
|
|
EAPI Evas_Object*
|
|
elm_slideshow_item_object_get(Elm_Slideshow_Item * item)
|
|
{
|
|
if (!item) return NULL;
|
|
return item->o;
|
|
}
|
|
|
|
/**
|
|
* Returns the data associated to an item
|
|
*
|
|
* @param item The slideshow item
|
|
* @return Returns the data associated to this item
|
|
*/
|
|
EAPI void *
|
|
elm_slideshow_item_data_get(Elm_Slideshow_Item * item)
|
|
{
|
|
if (!item) return NULL;
|
|
return (void *)item->data;
|
|
}
|
|
|