/usr/share/clutter-1.0/cookbook/examples/layouts-bind-constraint-allocation.c is in libclutter-1.0-doc 1.16.4-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | #include <stdlib.h>
#include <clutter/clutter.h>
#define OVERLAY_FACTOR 1.1
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
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;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
stage = clutter_stage_new ();
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_actor_new ();
clutter_actor_set_background_color (actor, CLUTTER_COLOR_Red);
clutter_actor_set_size (actor, 100, 100);
clutter_actor_set_position (actor, 150, 150);
clutter_actor_add_child (stage, actor);
overlay = clutter_actor_new ();
clutter_actor_set_background_color (overlay, CLUTTER_COLOR_Blue);
clutter_actor_set_opacity (overlay, 128);
g_signal_connect (actor,
"allocation-changed",
G_CALLBACK (allocation_changed_cb),
overlay);
clutter_actor_add_child (stage, overlay);
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;
}
|