Hey people,
I'm using elementary in a project and I need to send signals to widgets themes.
For example, I could decide that for a value on a spinner the text
should change color. Or that could even depends on other widgets
values combinations.
So, I've talked to Sacheil on #edevelop a bit and I've made a patch
with a possible solution.
We could have an elm_object_signal_emit, that could be used by any
widget, if it set a hook function.
I believe it's a better approach than exposing the edje obj as done by
elm_list_item_base_get.
The patch is attached. I would like to hear from you before committing
to svn / continue working on the other widgets.
I'm not very familiar with widgets code, I can be missing something.
Thanks in advance
Index: src/lib/elm_widget.c
===================================================================
--- src/lib/elm_widget.c (revision 49676)
+++ src/lib/elm_widget.c (working copy)
@@ -27,6 +27,8 @@
void (*activate_func) (Evas_Object *obj);
void (*disable_func) (Evas_Object *obj);
void (*theme_func) (Evas_Object *obj);
+ void (*signal_func) (Evas_Object *obj, const char *emission,
+ const char *source);
void (*changed_func) (Evas_Object *obj);
void (*on_focus_func) (void *data, Evas_Object *obj);
void *on_focus_data;
@@ -157,6 +159,13 @@
}
EAPI void
+elm_widget_signal_emit_hook_set(Evas_Object *obj, void (*func) (Evas_Object *obj, const char *emission, const char *source))
+{
+ API_ENTRY return;
+ sd->signal_func = func;
+}
+
+EAPI void
elm_widget_theme(Evas_Object *obj)
{
const Eina_List *l;
@@ -585,6 +594,14 @@
}
EAPI void
+elm_widget_signal_emit(Evas_Object *obj, const char *emission, const char *source)
+{
+ API_ENTRY return;
+ if (!sd->signal_func) return;
+ sd->signal_func(obj, emission, source);
+}
+
+EAPI void
elm_widget_focus_set(Evas_Object *obj, int first)
{
API_ENTRY return;
Index: src/lib/elm_main.c
===================================================================
--- src/lib/elm_main.c (revision 49676)
+++ src/lib/elm_main.c (working copy)
@@ -1379,3 +1379,20 @@
{
return elm_widget_type_get(obj);
}
+
+/**
+ * Send a signal to the widget edje object.
+ *
+ * This function sends a signal to the edje object of the obj. An edje program
+ * can respond to a signal by specifying matching 'signal' and
+ * 'source' fields.
+ *
+ * @param obj The object
+ * @param emission The signal's name.
+ * @param source The signal's source.
+ * @ingroup General
+ */
+EAPI void elm_object_signal_emit(Evas_Object *obj, const char *emission, const char *source)
+{
+ elm_widget_signal_emit(obj, emission, source);
+}
Index: src/lib/elm_priv.h
===================================================================
--- src/lib/elm_priv.h (revision 49676)
+++ src/lib/elm_priv.h (working copy)
@@ -122,6 +122,7 @@
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_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_theme(Evas_Object *obj);
EAPI void elm_widget_on_focus_hook_set(Evas_Object *obj, void (*func) (void *data, Evas_Object *obj), void *data);
EAPI void elm_widget_on_change_hook_set(Evas_Object *obj, void (*func) (void *data, Evas_Object *obj), void *data);
@@ -132,6 +133,7 @@
EAPI void elm_widget_sub_object_del(Evas_Object *obj, Evas_Object *sobj);
EAPI void elm_widget_resize_object_set(Evas_Object *obj, Evas_Object *sobj);
EAPI void elm_widget_hover_object_set(Evas_Object *obj, Evas_Object *sobj);
+EAPI void elm_widget_signal_emit(Evas_Object *obj, const char *emission, const char *source);
EAPI void elm_widget_can_focus_set(Evas_Object *obj, int can_focus);
EAPI int elm_widget_can_focus_get(const Evas_Object *obj);
EAPI int elm_widget_focus_get(const Evas_Object *obj);
Index: src/lib/elm_spinner.c
===================================================================
--- src/lib/elm_spinner.c (revision 49676)
+++ src/lib/elm_spinner.c (working copy)
@@ -82,6 +82,14 @@
}
static void
+_signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
+{
+ Widget_Data *wd = elm_widget_data_get(obj);
+ if (!wd) return;
+ edje_object_signal_emit(wd->spinner, emission, source);
+}
+
+static void
_theme_hook(Evas_Object *obj)
{
Widget_Data *wd = elm_widget_data_get(obj);
@@ -508,6 +516,7 @@
elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
elm_widget_theme_hook_set(obj, _theme_hook);
elm_widget_disable_hook_set(obj, _disable_hook);
+ elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
wd->val = 0.0;
wd->val_min = 0.0;
Index: src/lib/Elementary.h.in
===================================================================
--- src/lib/Elementary.h.in (revision 49676)
+++ src/lib/Elementary.h.in (working copy)
@@ -285,6 +285,8 @@
EAPI void elm_object_scroll_freeze_push(Evas_Object *obj);
EAPI void elm_object_scroll_freeze_pop(Evas_Object *obj);
+ EAPI void elm_object_signal_emit(Evas_Object *obj, const char *emission, const char *source);
+
EAPI void elm_coords_finger_size_adjust(int times_w, Evas_Coord *w, int times_h, Evas_Coord *h);
EAPI Elm_Theme *elm_theme_new(void);
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