512 lines
15 KiB
C
512 lines
15 KiB
C
#include <Elementary.h>
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#include "elm_priv.h"
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/**
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* @defgroup Button Button
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*
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* This is a push-button. Press it and run some function. It can contain
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* a simple label and icon object.
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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 *btn, *icon;
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const char *label;
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Eina_Bool autorepeat;
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Eina_Bool repeating;
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double ar_threshold;
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double ar_interval;
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Ecore_Timer *timer;
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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_clicked(void *data, Evas_Object *obj, const char *emission, const char *source);
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static void _signal_pressed(void *data, Evas_Object *obj, const char *emission, const char *source);
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static void _signal_unpressed(void *data, Evas_Object *obj, const char *emission, const char *source);
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static void _on_focus_hook(void *data, Evas_Object *obj);
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static void _activate(Evas_Object *obj);
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static void _activate_hook(Evas_Object *obj);
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static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
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Evas_Callback_Type type, void *event_info);
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static const char SIG_CLICKED[] = "clicked";
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static const char SIG_REPEATED[] = "repeated";
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static const char SIG_UNPRESSED[] = "unpressed";
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static const Evas_Smart_Cb_Description _signals[] = {
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{SIG_CLICKED, ""},
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{SIG_REPEATED, ""},
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{SIG_UNPRESSED, ""},
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{NULL, NULL}
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};
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static Eina_Bool
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_event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
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{
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if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
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Evas_Event_Key_Down *ev = event_info;
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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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if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
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if (elm_widget_disabled_get(obj)) return EINA_FALSE;
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if ((strcmp(ev->keyname, "Return")) && (strcmp(ev->keyname, "space")))
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return EINA_FALSE;
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_activate(obj);
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ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
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edje_object_signal_emit(wd->btn, "elm,anim,activate", "elm");
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return EINA_TRUE;
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}
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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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_on_focus_hook(void *data __UNUSED__, 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_focus_get(obj))
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{
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edje_object_signal_emit(wd->btn, "elm,action,focus", "elm");
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evas_object_focus_set(wd->btn, EINA_TRUE);
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}
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else
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{
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edje_object_signal_emit(wd->btn, "elm,action,unfocus", "elm");
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evas_object_focus_set(wd->btn, EINA_FALSE);
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}
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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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const char *str;
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if (!wd) return;
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_elm_theme_object_set(obj, wd->btn, "button", "base", elm_widget_style_get(obj));
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if (wd->icon)
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edje_object_part_swallow(wd->btn, "elm.swallow.content", wd->icon);
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if (wd->label)
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edje_object_signal_emit(wd->btn, "elm,state,text,visible", "elm");
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else
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edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
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if (wd->icon)
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edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
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else
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edje_object_signal_emit(wd->btn, "elm,state,icon,hidden", "elm");
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edje_object_part_text_set(wd->btn, "elm.text", wd->label);
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if (elm_object_disabled_get(obj))
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edje_object_signal_emit(wd->btn, "elm,state,disabled", "elm");
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edje_object_message_signal_process(wd->btn);
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edje_object_scale_set(wd->btn, elm_widget_scale_get(obj) * _elm_config->scale);
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str = edje_object_data_get(wd->btn, "focus_highlight");
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if ((str) && (!strcmp(str, "on")))
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elm_widget_highlight_in_theme_set(obj, EINA_TRUE);
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else
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elm_widget_highlight_in_theme_set(obj, EINA_FALSE);
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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->btn, "elm,state,disabled", "elm");
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else
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edje_object_signal_emit(wd->btn, "elm,state,enabled", "elm");
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}
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static void
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_signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
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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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edje_object_signal_emit(wd->btn, emission, source);
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}
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static void
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_signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, void (*func_cb) (void *data, Evas_Object *o, const char *emission, const char *source), void *data)
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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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edje_object_signal_callback_add(wd->btn, emission, source, func_cb, data);
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}
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static void *
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_signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, void (*func_cb) (void *data, Evas_Object *o, const char *emission, const char *source))
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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 edje_object_signal_callback_del(wd->btn, emission, source,
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func_cb);
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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->btn, &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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_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->btn, "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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edje_object_message_signal_process(wd->btn);
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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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_activate(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->timer)
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{
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ecore_timer_del(wd->timer);
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wd->timer = NULL;
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}
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wd->repeating = EINA_FALSE;
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evas_object_smart_callback_call(obj, SIG_CLICKED, NULL);
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_signal_unpressed(obj, wd->btn, NULL, NULL); /* safe guard when the theme does not emit the 'unpress' signal */
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}
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static void
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_activate_hook(Evas_Object *obj)
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{
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_activate(obj);
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}
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static void
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_signal_clicked(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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_activate(data);
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}
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static Eina_Bool
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_autorepeat_send(void *data)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return ECORE_CALLBACK_CANCEL;
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evas_object_smart_callback_call(data, SIG_REPEATED, NULL);
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if (!wd->repeating)
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{
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wd->timer = NULL;
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return ECORE_CALLBACK_CANCEL;
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}
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return ECORE_CALLBACK_RENEW;
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}
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static Eina_Bool
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_autorepeat_initial_send(void *data)
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{
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Widget_Data *wd = elm_widget_data_get(data);
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if (!wd) return ECORE_CALLBACK_CANCEL;
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if (wd->timer) ecore_timer_del(wd->timer);
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wd->repeating = EINA_TRUE;
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_autorepeat_send(data);
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wd->timer = ecore_timer_add(wd->ar_interval, _autorepeat_send, data);
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return ECORE_CALLBACK_CANCEL;
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}
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static void
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_signal_pressed(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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if ((wd->autorepeat) && (!wd->repeating))
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{
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if (wd->ar_threshold <= 0.0)
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_autorepeat_initial_send(data); /* call immediately */
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else
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wd->timer = ecore_timer_add(wd->ar_threshold, _autorepeat_initial_send, data);
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}
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}
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static void
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_signal_unpressed(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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if (wd->timer)
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{
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ecore_timer_del(wd->timer);
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wd->timer = NULL;
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}
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wd->repeating = EINA_FALSE;
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evas_object_smart_callback_call(data, SIG_UNPRESSED, NULL);
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}
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/**
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* Add a new button to the parent
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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 Button
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*/
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EAPI Evas_Object *
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elm_button_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, "button");
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elm_widget_type_set(obj, "button");
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elm_widget_sub_object_add(parent, obj);
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elm_widget_on_focus_hook_set( obj, _on_focus_hook, NULL );
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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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elm_widget_can_focus_set(obj, EINA_TRUE);
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elm_widget_activate_hook_set(obj, _activate_hook);
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elm_widget_event_hook_set(obj, _event_hook);
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elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
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elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
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elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
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wd->btn = edje_object_add(e);
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_elm_theme_object_set(obj, wd->btn, "button", "base", "default");
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edje_object_signal_callback_add(wd->btn, "elm,action,click", "",
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_signal_clicked, obj);
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edje_object_signal_callback_add(wd->btn, "elm,action,press", "",
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_signal_pressed, obj);
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edje_object_signal_callback_add(wd->btn, "elm,action,unpress", "",
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_signal_unpressed, obj);
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elm_widget_resize_object_set(obj, wd->btn);
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evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
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_theme_hook(obj);
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// TODO: convert Elementary to subclassing of Evas_Smart_Class
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// TODO: and save some bytes, making descriptions per-class and not instance!
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evas_object_smart_callbacks_descriptions_set(obj, _signals);
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return obj;
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}
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/**
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* Set the label used in the button
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*
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* @param obj The button object
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* @param label The text will be written on the button
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*
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* @ingroup Button
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*/
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EAPI void
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elm_button_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->btn, "elm,state,text,visible", "elm");
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else
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edje_object_signal_emit(wd->btn, "elm,state,text,hidden", "elm");
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edje_object_message_signal_process(wd->btn);
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edje_object_part_text_set(wd->btn, "elm.text", label);
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_sizing_eval(obj);
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}
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EAPI const char *
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elm_button_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 used for the button
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*
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* Once the icon object is set, a previously set one will be deleted
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* If you want to keep that old content object, use the
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* elm_button_icon_unset() function.
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*
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* @param obj The button object
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* @param icon The icon object for the button
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*
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* @ingroup Button
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*/
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EAPI void
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elm_button_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) return;
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if (wd->icon) evas_object_del(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->btn, "elm.swallow.content", icon);
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edje_object_signal_emit(wd->btn, "elm,state,icon,visible", "elm");
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edje_object_message_signal_process(wd->btn);
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}
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_sizing_eval(obj);
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}
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/**
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* Get the icon used for the button
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*
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* Return the icon object which is set for this widget.
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*
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* @param obj The button object
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* @return The icon object that is being used
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*
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* @ingroup Button
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*/
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EAPI Evas_Object *
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elm_button_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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* Unset the icon used for the button
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*
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* Unparent and return the icon object which was set for this widget.
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*
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* @param obj The button object
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* @return The icon object that was being used
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*
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* @ingroup Button
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*/
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EAPI Evas_Object *
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elm_button_icon_unset(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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if (!wd->icon) return NULL;
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Evas_Object *icon = wd->icon;
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elm_widget_sub_object_del(obj, wd->icon);
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edje_object_part_unswallow(wd->btn, wd->icon);
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wd->icon = NULL;
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return icon;
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}
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/**
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* Turn on/off the autorepeat event generated when the user keeps pressing on the button
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*
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* @param obj The button object
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* @param on A bool to turn on/off the event
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*
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* @ingroup Button
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*/
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EAPI void
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elm_button_autorepeat_set(Evas_Object *obj, Eina_Bool on)
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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->timer)
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{
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ecore_timer_del(wd->timer);
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wd->timer = NULL;
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}
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wd->autorepeat = on;
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wd->repeating = EINA_FALSE;
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}
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|
|
|
/**
|
|
* Set the initial timeout before the autorepeat event is generated
|
|
*
|
|
* @param obj The button object
|
|
* @param t Timeout
|
|
*
|
|
* @ingroup Button
|
|
*/
|
|
EAPI void
|
|
elm_button_autorepeat_initial_timeout_set(Evas_Object *obj, double t)
|
|
{
|
|
ELM_CHECK_WIDTYPE(obj, widtype);
|
|
Widget_Data *wd = elm_widget_data_get(obj);
|
|
if (!wd) return;
|
|
if (wd->ar_threshold == t) return;
|
|
if (wd->timer)
|
|
{
|
|
ecore_timer_del(wd->timer);
|
|
wd->timer = NULL;
|
|
}
|
|
wd->ar_threshold = t;
|
|
}
|
|
|
|
/**
|
|
* Set the interval between each generated autorepeat event
|
|
*
|
|
* @param obj The button object
|
|
* @param t Interval
|
|
*
|
|
* @ingroup Button
|
|
*/
|
|
EAPI void
|
|
elm_button_autorepeat_gap_timeout_set(Evas_Object *obj, double t)
|
|
{
|
|
ELM_CHECK_WIDTYPE(obj, widtype);
|
|
Widget_Data *wd = elm_widget_data_get(obj);
|
|
if (!wd) return;
|
|
if (wd->ar_interval == t) return;
|
|
|
|
wd->ar_interval = t;
|
|
if ((wd->repeating) && (wd->timer)) ecore_timer_interval_set(wd->timer, t);
|
|
}
|