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mutter-performance-source/tests/interactive/test-fbo.c

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#include <clutter/clutter.h>
#include <errno.h>
#include <stdlib.h>
#include <glib.h>
#include <gmodule.h>
#define STAGE_WIDTH 800
#define STAGE_HEIGHT 600
ClutterActor *
make_source (void)
{
ClutterActor *source, *actor;
GError *error = NULL;
gchar *file;
ClutterColor yellow = {0xff, 0xff, 0x00, 0xff};
source = clutter_group_new ();
file = g_build_filename (TESTS_DATADIR, "redhand.png", NULL);
actor = clutter_texture_new_from_file (file, &error);
if (!actor)
g_error("pixbuf load failed: %s", error ? error->message : "Unknown");
g_free (file);
clutter_container_add_actor (CLUTTER_CONTAINER (source), actor);
actor = clutter_text_new_with_text ("Sans Bold 50px", "Clutter");
clutter_text_set_color (CLUTTER_TEXT (actor), &yellow);
clutter_actor_set_y (actor, clutter_actor_get_height(source) + 5);
clutter_container_add_actor (CLUTTER_CONTAINER (source), actor);
return source;
}
G_MODULE_EXPORT int
test_fbo_main (int argc, char *argv[])
{
ClutterActor *fbo;
ClutterActor *onscreen_source;
ClutterActor *stage;
ClutterAnimation *animation;
int x_pos = 200;
int y_pos = 100;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
if (clutter_feature_available (CLUTTER_FEATURE_OFFSCREEN) == FALSE)
g_error("This test requires CLUTTER_FEATURE_OFFSCREEN");
stage = clutter_stage_new ();
clutter_actor_set_size (stage, STAGE_WIDTH, STAGE_HEIGHT);
clutter_actor_set_background_color (stage, CLUTTER_COLOR_SkyBlue);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Texture from Actor");
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
/* Create the first source */
onscreen_source = make_source();
clutter_actor_show_all (onscreen_source);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), onscreen_source);
y_pos = (STAGE_HEIGHT/2.0) -
(clutter_actor_get_height (onscreen_source)/2.0);
clutter_actor_set_position (onscreen_source, x_pos, y_pos);
x_pos += clutter_actor_get_width (onscreen_source);
animation = clutter_actor_animate (onscreen_source,
CLUTTER_LINEAR,
5000, /* 1 second duration */
"rotation-angle-y", 360.0f,
NULL);
clutter_animation_set_loop (animation, TRUE);
/* Second hand = actor from onscreen_source */
if ((fbo = clutter_texture_new_from_actor (onscreen_source)) == NULL)
g_error("onscreen fbo creation failed");
clutter_actor_set_position (fbo, x_pos, y_pos);
x_pos += clutter_actor_get_width (fbo);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), fbo);
/* Third hand = actor from Second hand */
if ((fbo = clutter_texture_new_from_actor (fbo)) == NULL)
g_error("fbo from fbo creation failed");
clutter_actor_set_position (fbo, x_pos, y_pos);
x_pos += clutter_actor_get_width (fbo);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), fbo);
clutter_actor_show_all (stage);
clutter_main ();
return 0;
}
G_MODULE_EXPORT const char *
test_fbo_describe (void)
{
return "Create a texture from an actor.";
}