377 lines
11 KiB
C
377 lines
11 KiB
C
#include <Elementary.h>
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#include "elm_priv.h"
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/**
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* @defgroup Check Check
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*
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* The check widget allows for toggling a value between true or false (1 or 0).
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*
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* Signals that you can add callbacks for are:
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*
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* changed - This is called whenever the user changes the state of one of the
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* check object.
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*
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* Check objects are a lot like radio objects in layout and functionality
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* except they do not work as a group, but independently and only toggle the
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* value of a boolean from false to true (0 or 1). elm_check_state_set() sets
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* the boolean state (1 for true, 0 for false), and elm_check_state_get()
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* returns the current state. For convenience, like the radio objects, you
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* can set a pointer to a boolean directly with elm_check_state_pointer_set()
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* for it to modify.
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*/
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typedef struct _Widget_Data Widget_Data;
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struct _Widget_Data
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{
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Evas_Object *chk, *icon;
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Eina_Bool state;
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Eina_Bool *statep;
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const char *label;
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};
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static const char *widtype = NULL;
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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 _disable_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 void _sub_del(void *data, Evas_Object *obj, void *event_info);
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static void _signal_check_off(void *data, Evas_Object *obj, const char *emission, const char *source);
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static void _signal_check_on(void *data, Evas_Object *obj, const char *emission, const char *source);
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static void _signal_check_toggle(void *data, Evas_Object *obj, const char *emission, const char *source);
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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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if (!wd) return;
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if (wd->label) eina_stringshare_del(wd->label);
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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->chk, "check", "base", elm_widget_style_get(obj));
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if (wd->icon)
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edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
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if (wd->state)
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edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
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if (wd->label)
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edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
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edje_object_part_text_set(wd->chk, "elm.text", wd->label);
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edje_object_message_signal_process(wd->chk);
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edje_object_scale_set(wd->chk, elm_widget_scale_get(obj) * _elm_config->scale);
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_sizing_eval(obj);
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}
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static void
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_disable_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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if (elm_widget_disabled_get(obj))
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edje_object_signal_emit(wd->chk, "elm,state,disabled", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,enabled", "elm");
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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, maxw = -1, maxh = -1;
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if (!wd) return;
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elm_coords_finger_size_adjust(1, &minw, 1, &minh);
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edje_object_size_min_restricted_calc(wd->chk, &minw, &minh, minw, minh);
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elm_coords_finger_size_adjust(1, &minw, 1, &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, maxw, maxh);
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}
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static void
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_changed_size_hints(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return;
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if (obj != wd->icon) return;
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Evas_Coord mw, mh;
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evas_object_size_hint_min_get(obj, &mw, &mh);
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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 __UNUSED__, Evas_Object *obj, void *event_info)
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{
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Widget_Data *wd = elm_widget_data_get(obj);
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Evas_Object *sub = event_info;
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if (!wd) return;
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if (sub == wd->icon)
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{
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edje_object_signal_emit(wd->chk, "elm,state,icon,hidden", "elm");
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evas_object_event_callback_del_full(sub, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
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_changed_size_hints, obj);
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wd->icon = NULL;
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_sizing_eval(obj);
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}
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}
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static void
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_signal_check_off(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return;
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wd->state = EINA_FALSE;
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if (wd->statep) *wd->statep = wd->state;
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edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
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evas_object_smart_callback_call(data, "changed", NULL);
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}
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static void
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_signal_check_on(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return;
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wd->state = EINA_TRUE;
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if (wd->statep) *wd->statep = wd->state;
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edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
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evas_object_smart_callback_call(data, "changed", NULL);
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}
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static void
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_signal_check_toggle(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return;
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wd->state = !wd->state;
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if (wd->statep) *wd->statep = wd->state;
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if (wd->state)
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edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
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evas_object_smart_callback_call(data, "changed", NULL);
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}
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/**
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* Add a new Check object
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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 Check
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*/
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EAPI Evas_Object *
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elm_check_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_SET_WIDTYPE(widtype, "check");
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elm_widget_type_set(obj, "check");
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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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elm_widget_disable_hook_set(obj, _disable_hook);
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wd->chk = edje_object_add(e);
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_elm_theme_set(wd->chk, "check", "base", "default");
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edje_object_signal_callback_add(wd->chk, "elm,action,check,on", "",
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_signal_check_on, obj);
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edje_object_signal_callback_add(wd->chk, "elm,action,check,off", "",
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_signal_check_off, obj);
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edje_object_signal_callback_add(wd->chk, "elm,action,check,toggle", "",
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_signal_check_toggle, obj);
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elm_widget_resize_object_set(obj, wd->chk);
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evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, 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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* Set the text label of the check object
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*
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* @param obj The check object
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* @param label The text label string in UTF-8
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*
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* @ingroup Check
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*/
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EAPI void
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elm_check_label_set(Evas_Object *obj, const char *label)
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{
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ELM_CHECK_WIDTYPE(obj, widtype);
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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_replace(&wd->label, label);
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if (label)
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edje_object_signal_emit(wd->chk, "elm,state,text,visible", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,text,hidden", "elm");
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edje_object_message_signal_process(wd->chk);
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edje_object_part_text_set(wd->chk, "elm.text", label);
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_sizing_eval(obj);
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}
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/**
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* Get the text label of the check object
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*
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* @param obj The check object
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* @return The text label string in UTF-8
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*
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* @ingroup Check
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*/
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EAPI const char *
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elm_check_label_get(const Evas_Object *obj)
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{
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ELM_CHECK_WIDTYPE(obj, widtype) NULL;
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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->label;
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}
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/**
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* Set the icon object of the check object
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*
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* Once the icon object is set, it will become a child of the check object and
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* be deleted when the check object is deleted. If another icon object is set
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* then the previous one becomes orophaned and will no longer be deleted along
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* with the check.
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*
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* @param obj The check object
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* @param icon The icon object
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*
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* @ingroup Check
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*/
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EAPI void
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elm_check_icon_set(Evas_Object *obj, Evas_Object *icon)
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{
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ELM_CHECK_WIDTYPE(obj, widtype);
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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->icon != icon) && (wd->icon))
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elm_widget_sub_object_del(obj, wd->icon);
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wd->icon = icon;
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if (icon)
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{
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elm_widget_sub_object_add(obj, icon);
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evas_object_event_callback_add(icon, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
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_changed_size_hints, obj);
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edje_object_part_swallow(wd->chk, "elm.swallow.content", icon);
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edje_object_signal_emit(wd->chk, "elm,state,icon,visible", "elm");
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_sizing_eval(obj);
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}
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}
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/**
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* Get the icon object of the check object
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*
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* @param obj The check object
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* @return The icon object
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*
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* @ingroup Check
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*/
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EAPI Evas_Object *
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elm_check_icon_get(const Evas_Object *obj)
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{
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ELM_CHECK_WIDTYPE(obj, widtype) NULL;
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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->icon;
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}
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/**
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* Set the on/off state of the check object
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*
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* This sets the state of the check and will also set the value if pointed to
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* to the state supplied, but will not call any callbacks.
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*
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* @param obj The check object
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* @param state The state to use (1 == on, 0 == off)
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*
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* @ingroup Check
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*/
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EAPI void
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elm_check_state_set(Evas_Object *obj, Eina_Bool state)
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{
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ELM_CHECK_WIDTYPE(obj, widtype);
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Widget_Data *wd = elm_widget_data_get(obj);
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if (!wd) return;
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if (state != wd->state)
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{
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wd->state = state;
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if (wd->statep) *wd->statep = wd->state;
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if (wd->state)
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edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
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}
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}
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/**
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* Get the state of the check object
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*
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* @param obj The check object
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* @return The boolean state
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*
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* @ingroup Check
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*/
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EAPI Eina_Bool
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elm_check_state_get(const Evas_Object *obj)
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{
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ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
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Widget_Data *wd = elm_widget_data_get(obj);
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if (!wd) return EINA_FALSE;
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return wd->state;
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}
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/**
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* Set a convenience pointer to a boolean to change
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*
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* This sets a pointer to a boolean, that, in addition to the check objects
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* state will also be modified directly. To stop setting the object pointed
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* to simply use NULL as the statep parameter. If statep is not NULL, then
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* when this is called, the check objects state will also be modified to
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* reflect the value of the boolean statep points to, just like calling
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* elm_check_state_set().
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*
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* @param obj The check object
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* @param statep Pointer to the boolean to modify
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*
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* @ingroup Check
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*/
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EAPI void
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elm_check_state_pointer_set(Evas_Object *obj, Eina_Bool *statep)
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{
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ELM_CHECK_WIDTYPE(obj, widtype);
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Widget_Data *wd = elm_widget_data_get(obj);
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if (!wd) return;
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if (statep)
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{
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wd->statep = statep;
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if (*wd->statep != wd->state)
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{
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wd->state = *wd->statep;
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if (wd->state)
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edje_object_signal_emit(wd->chk, "elm,state,check,on", "elm");
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else
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edje_object_signal_emit(wd->chk, "elm,state,check,off", "elm");
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}
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}
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else
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wd->statep = NULL;
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}
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