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examples: Update drag and drop action code

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Use modern API and show idiomatic behaviour.
This commit is contained in:
Emmanuele Bassi
2012-05-24 12:08:58 +01:00
parent a45d6455f7
commit 2878258fc0
2 changed files with 142 additions and 79 deletions
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114
examples/drag-action.c
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@ -5,22 +5,46 @@ static gboolean
on_enter (ClutterActor *actor,
ClutterEvent *event)
{
clutter_actor_animate (actor, CLUTTER_LINEAR, 150,
"@effects.curl.period", 0.25,
NULL);
ClutterTransition *t;
return FALSE;
t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.25);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
return CLUTTER_EVENT_STOP;
}
static gboolean
on_leave (ClutterActor *actor,
ClutterEvent *event)
{
clutter_actor_animate (actor, CLUTTER_LINEAR, 150,
"@effects.curl.period", 0.0,
NULL);
ClutterTransition *t;
return FALSE;
t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.25);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
return CLUTTER_EVENT_STOP;
}
static void
@ -32,18 +56,18 @@ on_drag_begin (ClutterDragAction *action,
{
gboolean is_copy = (modifiers & CLUTTER_SHIFT_MASK) ? TRUE : FALSE;
ClutterActor *drag_handle = NULL;
ClutterTransition *t;
if (is_copy)
{
ClutterActor *stage = clutter_actor_get_stage (actor);
drag_handle = clutter_rectangle_new ();
drag_handle = clutter_actor_new ();
clutter_actor_set_size (drag_handle, 48, 48);
clutter_rectangle_set_color (CLUTTER_RECTANGLE (drag_handle),
CLUTTER_COLOR_DarkSkyBlue);
clutter_actor_set_background_color (drag_handle, CLUTTER_COLOR_DarkSkyBlue);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), drag_handle);
clutter_actor_add_child (stage, drag_handle);
clutter_actor_set_position (drag_handle, event_x, event_y);
}
else
@ -52,9 +76,19 @@ on_drag_begin (ClutterDragAction *action,
clutter_drag_action_set_drag_handle (action, drag_handle);
/* fully desaturate the actor */
clutter_actor_animate (actor, CLUTTER_LINEAR, 150,
"@effects.disable.factor", 1.0,
NULL);
t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 1.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
}
static void
@ -65,6 +99,7 @@ on_drag_end (ClutterDragAction *action,
ClutterModifierType modifiers)
{
ClutterActor *drag_handle;
ClutterTransition *t;
drag_handle = clutter_drag_action_get_drag_handle (action);
if (actor != drag_handle)
@ -76,28 +111,38 @@ on_drag_end (ClutterDragAction *action,
* and animate the real actor to the drop coordinates,
* transformed in the parent's coordinate space
*/
clutter_actor_animate (drag_handle, CLUTTER_LINEAR, 150,
"opacity", 0,
"signal-swapped-after::completed",
G_CALLBACK (clutter_actor_destroy),
drag_handle,
NULL);
clutter_actor_save_easing_state (drag_handle);
clutter_actor_set_easing_mode (drag_handle, CLUTTER_LINEAR);
clutter_actor_set_opacity (drag_handle, 0);
clutter_actor_restore_easing_state (drag_handle);
g_signal_connect (drag_handle, "transitions-completed",
G_CALLBACK (clutter_actor_destroy),
NULL);
parent = clutter_actor_get_parent (actor);
clutter_actor_transform_stage_point (parent, event_x, event_y,
&real_x,
&real_y);
clutter_actor_animate (actor, CLUTTER_EASE_OUT_CUBIC, 150,
"@effects.disable.factor", 0.0,
"x", real_x,
"y", real_y,
NULL);
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_mode (actor, CLUTTER_EASE_OUT_CUBIC);
clutter_actor_set_position (actor, real_x, real_y);
clutter_actor_restore_easing_state (actor);
}
else
clutter_actor_animate (actor, CLUTTER_LINEAR, 150,
"@effects.disable.factor", 0.0,
NULL);
t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 1.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
}
static ClutterDragAxis
@ -161,7 +206,7 @@ main (int argc, char *argv[])
NULL,
&error) != CLUTTER_INIT_SUCCESS)
{
g_print ("Unable to run test-drag: %s\n", error->message);
g_print ("Unable to run drag-action: %s\n", error->message);
g_error_free (error);
return EXIT_FAILURE;
@ -172,13 +217,12 @@ main (int argc, char *argv[])
clutter_actor_set_size (stage, 800, 600);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
handle = clutter_rectangle_new ();
clutter_rectangle_set_color (CLUTTER_RECTANGLE (handle),
CLUTTER_COLOR_SkyBlue);
handle = clutter_actor_new ();
clutter_actor_set_background_color (handle, CLUTTER_COLOR_SkyBlue);
clutter_actor_set_size (handle, 128, 128);
clutter_actor_set_position (handle, (800 - 128) / 2, (600 - 128) / 2);
clutter_actor_set_reactive (handle, TRUE);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), handle);
clutter_actor_add_child (stage, handle);
g_signal_connect (handle, "enter-event", G_CALLBACK (on_enter), NULL);
g_signal_connect (handle, "leave-event", G_CALLBACK (on_leave), NULL);