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Elementary event propagation to widget parents 

The Elm Widgets aren't disposed exactly as trees of Evas Objects, so
need store widget parents separated from Evas Smart Object parents.

The Evas propagation events don't satisfy all use cases. Like managing
events in elm_win or try if one parent manage the event before manage
it.

In this, I add hook to each widget manage their interested events or
from their child.

SVN revision: 52527
This commit is contained in:
Tiago Rezende Campos Falcao 2010-09-21 02:02:24 +00:00
parent 6879d7fdad
commit ba4e1c944e
2 changed files with 78 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
legacy/elementary/src/lib/elm_widget.c
View File

@ -28,6 +28,7 @@ struct _Smart_Data
void (*activate_func) (Evas_Object *obj);
void (*disable_func) (Evas_Object *obj);
void (*theme_func) (Evas_Object *obj);
Eina_Bool (*event_func) (Evas_Object *obj, Evas_Object *source, Evas_Callback_Type type, void *event_info);
void (*signal_func) (Evas_Object *obj, const char *emission,
const char *source);
void (*callback_add_func) (Evas_Object *obj, const char *emission,
@ -155,6 +156,40 @@ _propagate_y_drag_lock(Evas_Object *obj, int dir)
}
}
static void
_propagate_event(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info)
{
INTERNAL_ENTRY;
Evas_Callback_Type type = (Evas_Callback_Type)(long) data;
Evas_Event_Flags *event_flags = NULL;
switch (type)
{
case EVAS_CALLBACK_KEY_DOWN:
{
Evas_Event_Key_Down *ev = event_info;
event_flags = &(ev->event_flags);
break;
}
case EVAS_CALLBACK_KEY_UP:
{
Evas_Event_Key_Up *ev = event_info;
event_flags = &(ev->event_flags);
break;
}
default:
break;
}
if (event_flags && (*event_flags & EVAS_EVENT_FLAG_ON_HOLD))
return;
if (sd->event_func && sd->event_func(obj, obj, type, event_info))
return;
elm_widget_parent_event_propagate(obj, type, event_info);
}
static void
_parent_focus(Evas_Object *obj)
{
@ -250,6 +285,13 @@ elm_widget_theme_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj))
sd->theme_func = func;
}
EAPI void
elm_widget_event_hook_set(Evas_Object *obj, Eina_Bool (*func) (Evas_Object *obj, Evas_Object *source, Evas_Callback_Type type, void *event_info))
{
API_ENTRY return;
sd->event_func = func;
}
EAPI void
elm_widget_changed_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj))
{
@ -458,6 +500,22 @@ elm_widget_can_focus_set(Evas_Object *obj, int can_focus)
{
API_ENTRY return;
sd->can_focus = can_focus;
if (can_focus)
{
evas_object_event_callback_add(obj, EVAS_CALLBACK_KEY_DOWN,
_propagate_event,
(void *)(long) EVAS_CALLBACK_KEY_DOWN);
evas_object_event_callback_add(obj, EVAS_CALLBACK_KEY_UP,
_propagate_event,
(void *)(long) EVAS_CALLBACK_KEY_UP);
}
else
{
evas_object_event_callback_del(obj, EVAS_CALLBACK_KEY_DOWN,
_propagate_event);
evas_object_event_callback_del(obj, EVAS_CALLBACK_KEY_UP,
_propagate_event);
}
}
EAPI int
@ -565,6 +623,24 @@ elm_widget_parent_widget_get(const Evas_Object *obj)
return parent;
}
EAPI Eina_Bool
elm_widget_parent_event_propagate(Evas_Object *obj, Evas_Callback_Type type, void *event_info)
{
API_ENTRY return EINA_FALSE;
Evas_Object *parent = sd->parent_obj;
while (parent)
{
sd = evas_object_smart_data_get(parent);
if ((!sd) || (!_elm_widget_is(obj)))
return EINA_FALSE; //Not Elm Widget
if (sd->event_func && sd->event_func(parent, obj, type, event_info))
return EINA_TRUE;
parent = sd->parent_obj;
}
return EINA_FALSE;
}
EAPI int
elm_widget_focus_jump(Evas_Object *obj, int forward)
{

2
legacy/elementary/src/lib/elm_widget.h
View File

@ -213,6 +213,7 @@ EAPI void elm_widget_focus_hook_set(Evas_Object *obj, void (*func) (
EAPI void elm_widget_activate_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj));
EAPI void elm_widget_disable_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj));
EAPI void elm_widget_theme_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj));
EAPI void elm_widget_event_hook_set(Evas_Object *obj, Eina_Bool (*func) (Evas_Object *obj, Evas_Object *source, Evas_Callback_Type type, void *event_info));
EAPI void elm_widget_changed_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj));
EAPI void elm_widget_signal_emit_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj, const char *emission, const char *source));
EAPI void elm_widget_signal_callback_add_hook_set(Evas_Object *obj, void (*func) (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));
@ -239,6 +240,7 @@ EAPI Evas_Object *elm_widget_focused_object_get(const Evas_Object *obj);
EAPI Evas_Object *elm_widget_top_get(const Evas_Object *obj);
EAPI Eina_Bool elm_widget_is(const Evas_Object *obj);
EAPI Evas_Object *elm_widget_parent_widget_get(const Evas_Object *obj);
EAPI Eina_Bool elm_widget_parent_event_propagate(Evas_Object *obj, Evas_Callback_Type type, void *event_info);
EAPI int elm_widget_focus_jump(Evas_Object *obj, int forward);
EAPI void elm_widget_focus_set(Evas_Object *obj, int first);
EAPI void elm_widget_focused_object_clear(Evas_Object *obj);