mirror of
https://github.com/brl/mutter.git
synced 2024-09-21 06:56:12 -04:00
c3cbf1533f
An alternative method (not using constraints) to bind one actor's size and position to another. Used as an example in the recipe about resizing one actor in sync with a source actor.
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
#include <stdlib.h>
|
|
#include <clutter/clutter.h>
|
|
|
|
#define OVERLAY_FACTOR 1.1
|
|
|
|
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
|
|
static const ClutterColor red = { 0xff, 0x00, 0x00, 0xff };
|
|
static const ClutterColor blue = { 0x00, 0x00, 0xff, 0x66 };
|
|
|
|
void
|
|
allocation_changed_cb (ClutterActor *actor,
|
|
const ClutterActorBox *allocation,
|
|
ClutterAllocationFlags flags,
|
|
gpointer user_data)
|
|
{
|
|
ClutterActor *overlay = CLUTTER_ACTOR (user_data);
|
|
|
|
gfloat width, height, x, y;
|
|
clutter_actor_box_get_size (allocation, &width, &height);
|
|
clutter_actor_box_get_origin (allocation, &x, &y);
|
|
|
|
clutter_actor_set_size (overlay,
|
|
width * OVERLAY_FACTOR,
|
|
height * OVERLAY_FACTOR);
|
|
|
|
clutter_actor_set_position (overlay,
|
|
x - ((OVERLAY_FACTOR - 1) * width * 0.5),
|
|
y - ((OVERLAY_FACTOR - 1) * width * 0.5));
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
ClutterActor *stage;
|
|
ClutterActor *actor;
|
|
ClutterActor *overlay;
|
|
|
|
clutter_init (&argc, &argv);
|
|
|
|
stage = clutter_stage_get_default ();
|
|
clutter_actor_set_size (stage, 400, 400);
|
|
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
|
|
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
|
|
|
|
actor = clutter_rectangle_new_with_color (&red);
|
|
clutter_actor_set_size (actor, 100, 100);
|
|
clutter_actor_set_position (actor, 150, 150);
|
|
|
|
overlay = clutter_rectangle_new_with_color (&blue);
|
|
|
|
g_signal_connect (actor,
|
|
"allocation-changed",
|
|
G_CALLBACK (allocation_changed_cb),
|
|
overlay);
|
|
|
|
clutter_container_add (CLUTTER_CONTAINER (stage), actor, overlay, NULL);
|
|
|
|
clutter_actor_animate (actor, CLUTTER_LINEAR, 2000,
|
|
"width", 300.0,
|
|
"height", 300.0,
|
|
"x", 50.0,
|
|
"y", 50.0,
|
|
NULL);
|
|
|
|
clutter_actor_show (stage);
|
|
|
|
clutter_main ();
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|