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=== Elementary Animations ===
==== Creating a Wipe Effect ====
The wipe transition is applied on an Evas object considering the wipe type and
the direction. Use ELM_TRANSIT_EFFECT_WIPE_TYPE_HIDE to hide the button,
and ELM_TRANSIT_EFFECT_WIPE_DIR_RIGHT to do it from left to right.
The wipe animation button is as follows:
<code c>
The wipe button
Evas_Object *btn_wipe = elm_button_add(win);
elm_object_text_set(btn_wipe, “Wipe”);
evas_object_size_hint_weight_set(btn_wipe, EVAS_HINT_FILL, EVAS_HINT_FILL);
evas_object_show(btn_wipe);
evas_object_smart_callback_add(btn_wipe, “clicked”, _btn_wipe_cb, &anim);
elm_box_pack_end(right_vbox, btn_wipe);
</code>
The wipe button callback looks like:
<code c>
static void
_btn_wipe_cb(void *data, Evas_Object *btn, void *ev)
{
Animations *anim = (Animations *)data;
Starting the rotation effect 360 degrees
evas_object_resize(anim->button, 100, 50);
Setting the button text
elm_object_text_set(anim->button, “Wipe”);
_wipe_effect(anim->button);
}
</code>
The animation function calls elm_transit_effect_wipe_add with
ELM_TRANSIT_EFFECT_WIPE_TYPE_HIDE as the second parameter to hide the button
and ELM_TRANSIT_EFFECT_WIPE_DIR_RIGHT as last parameter to set the direction
(left to right).
<code c>
static void
_wipe_effect(Evas_Object *obj)
{
Elm_Transit *trans;
trans = elm_transit_add();
elm_transit_object_add(trans, obj);
elm_transit_effect_wipe_add(trans, ELM_TRANSIT_EFFECT_WIPE_TYPE_HIDE, ELM_TRANSIT_EFFECT_WIPE_DIR_RIGHT);
elm_transit_duration_set(trans, 3.0);
elm_transit_go(trans);
}
</code>
The whole code__: elementary_animations.c
next page__: **Implementing Elementary Transit Effects