Panes widget example

This code places two Elementary panes widgets on a window, one of them displayed vertically and the other horizontally, to exemplify a part of the widget's API.

Also, all the signals emitted by this widget will be covered.

Let's start adding a panes to our window:

panes = elm_panes_add(win);
evas_object_size_hint_weight_set(panes, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
elm_win_resize_object_add(win, panes);
evas_object_show(panes);

Now we will set a content (a simple button) to the left side of our panes widget:

bt = elm_button_add(win);

The content of the right side will be something a bit more elaborated, we'll place another panes, displayed vertically (it's displayed horizontally by default):

When populating a panes displayed vertically, remember that left content will be placed at top, and right content will place at bottom. Next we will add two buttons to exemplify that:

Panes widgets emits 4 different signals, depending on users interaction with the draggable bar. We'll add a callback function for each of them.

`"clicked" signal` :

Callback function that just print "Clicked" to stdin:

static void
_clicked_double(void *data, Evas_Object *obj, void *event_info)
{
static double size = 0.0;
double tmp_size = 0.0;
tmp_size = elm_panes_content_left_size_get(obj);
if (tmp_size > 0)
{
elm_panes_content_left_size_set(obj, 0.0);
printf("Double clicked, hidding.\n");
}

Also, add callback function to the panes:

evas_object_smart_callback_add(panes, "clicked", _clicked, panes);

`"press" signal` :

Callback function that just print "Pressed" to stdin:

static void
_unpress(void *data, Evas_Object *obj, void *event_info)
{
printf("Unpressed, size : %f\n", elm_panes_content_left_size_get(obj));
}

Also, add callback function to the panes:

evas_object_smart_callback_add(panes, "press", _press, panes);

Now, let's try to make our callback functions a bit more useful:

`"unpress" signal` :

Suppose we want to know the size proportion of left content after user drags the bar. We need to listen for `unpress` signal, and get this size from our panes widget. It's done on the following function:

static void
_clicked(void *data, Evas_Object *obj, void *event_info)
{
printf("Clicked\n");
}

Adding the callback function to the panes:

evas_object_smart_callback_add(panes, "unpress", _unpress, panes);

`"clicked,double" signal` :

Now, a interesting feature that could be addded to panes widget. Hide a content when user double click the draggable bar. It's done using a variable to store size and content left size getter and setter on the following function:

static double size = 0.0;

Adding the callback function to the panes:

See the full example, whose window should look like this picture: