brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

examples/layout-manager: Improve the example

Browse Source 
Add an explicit transition, and more comments.
This commit is contained in:
Emmanuele Bassi 2013-03-08 04:27:57 +00:00
parent 041d8b5d29
commit 7f5b68eed3
1 changed files with 21 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
examples/layout-manager.c
View File

@ -224,7 +224,7 @@ multi_layout_allocate (ClutterLayoutManager *manager,
clutter_actor_iter_init (&iter, CLUTTER_ACTOR (container));
while (clutter_actor_iter_next (&iter, &child))
{
ClutterActorBox child_allocation = CLUTTER_ACTOR_BOX_INIT (0, 0, 0, 0);
ClutterActorBox child_allocation = CLUTTER_ACTOR_BOX_INIT_ZERO;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
@ -373,6 +373,7 @@ main (int argc, char *argv[])
ClutterActor *stage, *box, *label;
ClutterLayoutManager *manager;
ClutterMargin margin;
ClutterTransition *transition;
int i;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
@ -383,11 +384,13 @@ main (int argc, char *argv[])
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
clutter_actor_show (stage);
/* the layout manager for the main container */
manager = multi_layout_new ();
multi_layout_set_spacing ((MultiLayout *) manager, PADDING);
margin.top = margin.bottom = margin.left = margin.right = PADDING;
/* our main container, centered on the stage */
box = clutter_actor_new ();
clutter_actor_set_margin (box, &margin);
clutter_actor_set_layout_manager (box, manager);
@ -407,14 +410,31 @@ main (int argc, char *argv[])
color.alpha = 128 + 128 / N_RECTS * i;
/* elements on the layout */
clutter_actor_set_size (rect, RECT_SIZE, RECT_SIZE);
clutter_actor_set_pivot_point (rect, .5f, .5f);
clutter_actor_set_background_color (rect, &color);
clutter_actor_set_opacity (rect, 0);
clutter_actor_set_reactive (rect, TRUE);
/* explicit transition that fades in the element; the delay on
* the transition staggers the fade depending on the index
*/
transition = clutter_property_transition_new ("opacity");
clutter_timeline_set_duration (CLUTTER_TIMELINE (transition), 250);
clutter_timeline_set_delay (CLUTTER_TIMELINE (transition), i * 50);
clutter_transition_set_from (transition, G_TYPE_UINT, 0);
clutter_transition_set_to (transition, G_TYPE_UINT, 255);
clutter_actor_add_transition (rect, "fadeIn", transition);
g_object_unref (transition);
/* we want all state transitions to be animated */
clutter_actor_set_easing_duration (rect, 250);
clutter_actor_set_easing_mode (rect, CLUTTER_EASE_OUT_CUBIC);
clutter_actor_add_child (box, rect);
/* simple hover effect */
g_signal_connect (rect, "enter-event", G_CALLBACK (on_enter), NULL);
g_signal_connect (rect, "leave-event", G_CALLBACK (on_leave), NULL);
}