2010/11/29 Dave Andreoli <d...@gurumeditation.it>:
> 2010/11/29 Tiago Falcão <ti...@profusion.mobi>:
>> Some time ago, we created a system to propagate events across the
>> Elementary widget tree, done mostly (and for now, only) to propagate
>> key events all the way to the top widget (usually, the window). It was
>> needed because the normal propagation Evas does works on Smart
>> Objects, but the Elementary works doesn't allow to make a smart member
>> out of every child of a widget.
>>
>> This system was internal, but we began to expose it, so the user can
>> hook his own callbacks to listen for key events at the window level
>> (or anything below), regardless of what widget is focused. This is
>> helpful for things like key bindings on an application. The user
>> callbacks will be called in case no widget in the tree processed the
>> event.
>
> So this will work only for key events, right? not mouse or others?
>
> If yes then the name:
> elm_widget_event_callback_add
> is wrong, should be something like:
> elm_widget_key_event_callback_add
>
Only key events were done now out of necessity. I'm not sure more need
to be exposed, so before renaming stuff I guess we should think about
that.
> DaveMDS
>
>>
>> On Mon, Nov 29, 2010 at 2:35 PM, Dave Andreoli <d...@gurumeditation.it>
>> wrote:
>>> 2010/11/29 Enlightenment SVN <no-re...@enlightenment.org>:
>>>> Log:
>>>> Event Callback
>>>
>>> Can you please explain better? This will connect every signal?
>>>
>>> Guys please, write better log, I can't lost 10 minutes per mail
>>> to see what you changed
>>>
>>> DaveMDS
>>>
>>>> Author: tiago
>>>> Date: 2010-11-29 05:56:30 -0800 (Mon, 29 Nov 2010)
>>>> New Revision: 55061
>>>>
>>>> Modified:
>>>> trunk/TMP/st/elementary/src/bin/test_focus.c
>>>> trunk/TMP/st/elementary/src/lib/Elementary.h.in
>>>> trunk/TMP/st/elementary/src/lib/elm_main.c
>>>> trunk/TMP/st/elementary/src/lib/elm_widget.c
>>>> trunk/TMP/st/elementary/src/lib/elm_widget.h
>>>>
>>>> Modified: trunk/TMP/st/elementary/src/bin/test_focus.c
>>>> ===================================================================
>>>> --- trunk/TMP/st/elementary/src/bin/test_focus.c 2010-11-29
>>>> 13:17:33 UTC (rev 55060)
>>>> +++ trunk/TMP/st/elementary/src/bin/test_focus.c 2010-11-29
>>>> 13:56:30 UTC (rev 55061)
>>>> @@ -5,6 +5,23 @@
>>>> #endif
>>>> #ifndef ELM_LIB_QUICKLAUNCH
>>>>
>>>> +static Eina_Bool
>>>> +_event(void *data __UNUSED__, Evas_Object *obj __UNUSED__, Evas_Object
>>>> *src __UNUSED__, Evas_Callback_Type type, void *event_info)
>>>> +{
>>>> + const char *key;
>>>> + if (type == EVAS_CALLBACK_KEY_DOWN)
>>>> + printf ("Key Down:");
>>>> + else if (type == EVAS_CALLBACK_KEY_UP)
>>>> + printf ("Key Up:");
>>>> + else
>>>> + return EINA_FALSE;
>>>> + Evas_Event_Key_Down *ev = event_info;
>>>> + printf("%s\n", ev->key);
>>>> +
>>>> + ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
>>>> + return EINA_TRUE;
>>>> +}
>>>> +
>>>> static void
>>>> _on_key_down(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj
>>>> __UNUSED__, void *einfo __UNUSED__)
>>>> {
>>>> @@ -31,6 +48,7 @@
>>>> elm_win_title_set(win, "Focus");
>>>> elm_win_focus_highlight_enabled_set(win, EINA_TRUE);
>>>> evas_object_resize(win, 800, 600);
>>>> + elm_object_event_callback_add(win, _event, NULL);
>>>> elm_win_autodel_set(win, EINA_TRUE);
>>>> my_show(win);
>>>>
>>>> @@ -126,8 +144,10 @@
>>>> evas_object_size_hint_align_set(bt, EVAS_HINT_FILL,
>>>> EVAS_HINT_FILL);
>>>> evas_object_size_hint_weight_set(bt, 0.0, 0.0);
>>>> + elm_object_event_callback_add(bt, _event, NULL);
>>>> elm_scroller_content_set(sc, bt);
>>>> my_show(bt);
>>>> + elm_object_event_callback_del(bt, _event, NULL);
>>>> }
>>>> }
>>>>
>>>>
>>>> Modified: trunk/TMP/st/elementary/src/lib/Elementary.h.in
>>>> ===================================================================
>>>> --- trunk/TMP/st/elementary/src/lib/Elementary.h.in 2010-11-29
>>>> 13:17:33 UTC (rev 55060)
>>>> +++ trunk/TMP/st/elementary/src/lib/Elementary.h.in 2010-11-29
>>>> 13:56:30 UTC (rev 55061)
>>>> @@ -215,8 +215,9 @@
>>>> * set on Elm_List_Item, then it is of this type.
>>>> */
>>>> typedef Evas_Object *(*Elm_Tooltip_Item_Content_Cb) (void *data,
>>>> Evas_Object *obj, void *item);
>>>> -
>>>> -
>>>> +
>>>> + typedef Eina_Bool (*Elm_Event_Cb) (void *data, Evas_Object *obj,
>>>> Evas_Object *src, Evas_Callback_Type type, void *event_info);
>>>> +
>>>> #ifndef ELM_LIB_QUICKLAUNCH
>>>> #define ELM_MAIN() int main(int argc, char **argv) {elm_init(argc, argv);
>>>> return elm_main(argc, argv);}
>>>> #else
>>>> @@ -368,6 +369,9 @@
>>>> EAPI void elm_object_signal_callback_add(Evas_Object *obj,
>>>> const char *emission, const char *source, void (*func) (void *data,
>>>> Evas_Object *o, const char *emission, const char *source), void *data);
>>>> EAPI void *elm_object_signal_callback_del(Evas_Object *obj,
>>>> const char *emission, const char *source, void (*func) (void *data,
>>>> Evas_Object *o, const char *emission, const char *source));
>>>>
>>>> + EAPI void elm_object_event_callback_add(Evas_Object *obj,
>>>> Elm_Event_Cb func, const void *data);
>>>> + EAPI void *elm_object_event_callback_del(Evas_Object *obj,
>>>> Elm_Event_Cb func, const void *data);
>>>> +
>>>> EAPI void elm_coords_finger_size_adjust(int times_w, Evas_Coord
>>>> *w, int times_h, Evas_Coord *h);
>>>>
>>>> EAPI double elm_longpress_timeout_get(void);
>>>>
>>>> Modified: trunk/TMP/st/elementary/src/lib/elm_main.c
>>>> ===================================================================
>>>> --- trunk/TMP/st/elementary/src/lib/elm_main.c 2010-11-29 13:17:33 UTC
>>>> (rev 55060)
>>>> +++ trunk/TMP/st/elementary/src/lib/elm_main.c 2010-11-29 13:56:30 UTC
>>>> (rev 55061)
>>>> @@ -2651,8 +2651,52 @@
>>>> return elm_widget_signal_callback_del(obj, emission, source, func);
>>>> }
>>>>
>>>> +/**
>>>> + * Add a callback for a event emitted by widget or their children.
>>>> + *
>>>> + * This function connects a callback function to any key_down key_up event
>>>> + * emitted by the @p obj or their children.
>>>> + * This only will be called if no other callback has consumed the event.
>>>> + * If you want consume the event, and no other get it, func should return
>>>> + * EINA_TRUE and put EVAS_EVENT_FLAG_ON_HOLD in event_flags.
>>>> + *
>>>> + * @warning Accept duplicated callback addition.
>>>> + *
>>>> + * @param obj The object
>>>> + * @param func The callback function to be executed when the event is
>>>> + * emitted.
>>>> + * @param data Data to pass in to the callback function.
>>>> + * @ingroup General
>>>> + */
>>>> +EAPI void
>>>> +elm_object_event_callback_add(Evas_Object *obj, Elm_Event_Cb func, const
>>>> void *data)
>>>> +{
>>>> + elm_widget_event_callback_add(obj, func, data);
>>>> +}
>>>>
>>>> +/**
>>>> + * Remove a event callback from an widget.
>>>> + *
>>>> + * This function removes a callback, previoulsy attached to event emission
>>>> + * by the @p obj.
>>>> + * The parameters func and data must match exactly those passed to
>>>> + * a previous call to elm_object_event_callback_add(). The data pointer
>>>> that
>>>> + * was passed to this call will be returned.
>>>> + *
>>>> + * @param obj The object
>>>> + * @param func The callback function to be executed when the event is
>>>> + * emitted.
>>>> + * @param data Data to pass in to the callback function.
>>>> + * @return The data pointer
>>>> + * @ingroup General
>>>> + */
>>>> +EAPI void *
>>>> +elm_object_event_callback_del(Evas_Object *obj, Elm_Event_Cb func, const
>>>> void *data)
>>>> +{
>>>> + return elm_widget_event_callback_del(obj, func, data);
>>>> +}
>>>>
>>>> +
>>>> /**
>>>> * @defgroup Debug Debug
>>>> */
>>>>
>>>> Modified: trunk/TMP/st/elementary/src/lib/elm_widget.c
>>>> ===================================================================
>>>> --- trunk/TMP/st/elementary/src/lib/elm_widget.c 2010-11-29
>>>> 13:17:33 UTC (rev 55060)
>>>> +++ trunk/TMP/st/elementary/src/lib/elm_widget.c 2010-11-29
>>>> 13:56:30 UTC (rev 55061)
>>>> @@ -12,6 +12,7 @@
>>>>
>>>> typedef struct _Smart_Data Smart_Data;
>>>> typedef struct _Edje_Signal_Data Edje_Signal_Data;
>>>> +typedef struct _Elm_Event_Cb_Data Elm_Event_Cb_Data;
>>>>
>>>> struct _Smart_Data
>>>> {
>>>> @@ -77,6 +78,7 @@
>>>> Eina_Bool disabled : 1;
>>>>
>>>> Eina_List *focus_chain;
>>>> + Eina_List *event_cb;
>>>> };
>>>>
>>>> struct _Edje_Signal_Data
>>>> @@ -88,6 +90,11 @@
>>>> void *data;
>>>> };
>>>>
>>>> +struct _Elm_Event_Cb_Data {
>>>> + Elm_Event_Cb func;
>>>> + const void *data;
>>>> +};
>>>> +
>>>> /* local subsystem functions */
>>>> static void _smart_reconfigure(Smart_Data *sd);
>>>> static void _smart_add(Evas_Object *obj);
>>>> @@ -238,13 +245,7 @@
>>>> 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, event_flags);
>>>> + elm_widget_event_propagate(obj, type, event_info, event_flags);
>>>> }
>>>>
>>>> static void
>>>> @@ -897,11 +898,40 @@
>>>> return parent;
>>>> }
>>>>
>>>> +EAPI void
>>>> +elm_widget_event_callback_add(Evas_Object *obj, Elm_Event_Cb func, const
>>>> void *data)
>>>> +{
>>>> + API_ENTRY return;
>>>> + Elm_Event_Cb_Data *ecb = ELM_NEW(Elm_Event_Cb_Data);
>>>> + ecb->func = func;
>>>> + ecb->data = data;
>>>> + sd->event_cb = eina_list_append(sd->event_cb, ecb);
>>>> +}
>>>> +
>>>> +EAPI void *
>>>> +elm_widget_event_callback_del(Evas_Object *obj, Elm_Event_Cb func, const
>>>> void *data)
>>>> +{
>>>> + API_ENTRY return NULL;
>>>> + Eina_List *l;
>>>> + Elm_Event_Cb_Data *ecd;
>>>> + EINA_LIST_FOREACH(sd->event_cb, l, ecd)
>>>> + if ((ecd->func == func) && (ecd->data == data))
>>>> + {
>>>> + free(ecd);
>>>> + sd->event_cb = eina_list_remove_list(sd->event_cb, l);
>>>> + return (void *)data;
>>>> + }
>>>> + return NULL;
>>>> +}
>>>> +
>>>> EAPI Eina_Bool
>>>> -elm_widget_parent_event_propagate(Evas_Object *obj, Evas_Callback_Type
>>>> type, void *event_info, Evas_Event_Flags *event_flags)
>>>> +elm_widget_event_propagate(Evas_Object *obj, Evas_Callback_Type type,
>>>> void *event_info, Evas_Event_Flags *event_flags)
>>>> {
>>>> - API_ENTRY return EINA_FALSE;
>>>> - Evas_Object *parent = sd->parent_obj;
>>>> + API_ENTRY return EINA_FALSE; //TODO reduce.
>>>> + if (!_elm_widget_is(obj)) return EINA_FALSE;
>>>> + Evas_Object *parent = obj;
>>>> + Elm_Event_Cb_Data *ecd;
>>>> + Eina_List *l, *l_prev;
>>>>
>>>> while (parent &&
>>>> (!(event_flags && ((*event_flags) & EVAS_EVENT_FLAG_ON_HOLD))))
>>>> @@ -909,8 +939,16 @@
>>>> 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;
>>>> +
>>>> + EINA_LIST_FOREACH_SAFE(sd->event_cb, l, l_prev, ecd)
>>>> + {
>>>> + if (ecd->func((void *)ecd->data, parent, obj, type,
>>>> event_info) ||
>>>> + (event_flags && ((*event_flags) &
>>>> EVAS_EVENT_FLAG_ON_HOLD)))
>>>> + return EINA_TRUE;
>>>> + }
>>>> parent = sd->parent_obj;
>>>> }
>>>>
>>>> @@ -2499,7 +2537,7 @@
>>>> Edje_Signal_Data *esd;
>>>>
>>>> INTERNAL_ENTRY;
>>>> -
>>>> +
>>>> if (sd->del_pre_func) sd->del_pre_func(obj);
>>>> if (sd->resize_obj)
>>>> {
>>>> @@ -2531,6 +2569,7 @@
>>>> eina_stringshare_del(esd->source);
>>>> free(esd);
>>>> }
>>>> + eina_list_free(sd->event_cb); /* should be empty anyway */
>>>> if (sd->del_func) sd->del_func(obj);
>>>> if (sd->style) eina_stringshare_del(sd->style);
>>>> if (sd->type) eina_stringshare_del(sd->type);
>>>>
>>>> Modified: trunk/TMP/st/elementary/src/lib/elm_widget.h
>>>> ===================================================================
>>>> --- trunk/TMP/st/elementary/src/lib/elm_widget.h 2010-11-29
>>>> 13:17:33 UTC (rev 55060)
>>>> +++ trunk/TMP/st/elementary/src/lib/elm_widget.h 2010-11-29
>>>> 13:56:30 UTC (rev 55061)
>>>> @@ -247,7 +247,9 @@
>>>> 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, Evas_Event_Flags *event_flags);
>>>> +EAPI void elm_widget_event_callback_add(Evas_Object *obj,
>>>> Elm_Event_Cb func, const void *data);
>>>> +EAPI void *elm_widget_event_callback_del(Evas_Object *obj,
>>>> Elm_Event_Cb func, const void *data);
>>>> +EAPI Eina_Bool elm_widget_event_propagate(Evas_Object *obj,
>>>> Evas_Callback_Type type, void *event_info, Evas_Event_Flags *event_flags);
>>>> EAPI void elm_widget_focus_custom_chain_set(Evas_Object *obj,
>>>> Eina_List *objs);
>>>> EAPI void elm_widget_focus_custom_chain_unset(Evas_Object
>>>> *obj);
>>>> EAPI const Eina_List *elm_widget_focus_custom_chain_get(const Evas_Object
>>>> *obj);
>>>>
>>>>
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>>>
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>>
>>
>>
>> --
>> Tiago Rezende Campos Falcão
>> Developer @ ProFUSION Embedded Systems
>>
>
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