mirror of
https://github.com/brl/mutter.git
synced 2024-12-29 14:22:13 +00:00
aece642adb
Make sure users get the idea that clutter_init()
has a return value that needs to be checked.
These were fixed via sed magic:
sed -i -s -e "s/clutter_init (.*)/\
if (& != CLUTTER_INIT_SUCCESS)\n return 1/"\
doc/*/*/*.{c,xml} doc/*/*.xml
http://bugzilla.clutter-project.org/show_bug.cgi?id=2574
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/* Example of using a custom CbPageFoldEffect to do
|
|
* an animated fold of a texture containing an image
|
|
*
|
|
* Pass the full path to the image on the command line;
|
|
* click on the texture to trigger the folding animation
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <clutter/clutter.h>
|
|
|
|
#include "cb-page-fold-effect.h"
|
|
|
|
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
|
|
|
|
static gboolean
|
|
button_pressed_cb (ClutterActor *actor,
|
|
ClutterEvent *event,
|
|
gpointer user_data)
|
|
{
|
|
ClutterState *transitions = CLUTTER_STATE (user_data);
|
|
|
|
if (g_strcmp0 (clutter_state_get_state (transitions), "folded") == 0)
|
|
clutter_state_set_state (transitions, "unfolded");
|
|
else
|
|
clutter_state_set_state (transitions, "folded");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
int
|
|
main (int argc,
|
|
char *argv[])
|
|
{
|
|
ClutterActor *stage;
|
|
ClutterActor *texture;
|
|
ClutterEffect *effect;
|
|
ClutterState *transitions;
|
|
GError *error = NULL;
|
|
|
|
gchar *filename;
|
|
|
|
if (argc < 2)
|
|
{
|
|
g_print ("Usage: %s <path to image file>\n", argv[0]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
filename = argv[1];
|
|
|
|
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
|
|
return 1;
|
|
|
|
stage = clutter_stage_new ();
|
|
clutter_actor_set_size (stage, 400, 300);
|
|
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
|
|
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
|
|
|
|
texture = clutter_texture_new ();
|
|
clutter_texture_set_keep_aspect_ratio (CLUTTER_TEXTURE (texture), TRUE);
|
|
clutter_actor_set_width (texture, 400);
|
|
clutter_actor_set_reactive (texture, TRUE);
|
|
clutter_texture_set_from_file (CLUTTER_TEXTURE (texture),
|
|
filename,
|
|
&error);
|
|
|
|
if (error != NULL)
|
|
{
|
|
g_critical ("Error loading texture from file %s; error was:\n%s",
|
|
filename,
|
|
error->message);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* create the page fold effect instance with destination fold angle
|
|
* of 180 degrees and starting period of 0 (no folding)
|
|
*/
|
|
effect = cb_page_fold_effect_new (180.0, 0.0);
|
|
|
|
/* add the effect to the texture actor */
|
|
clutter_actor_add_effect (texture, effect);
|
|
|
|
clutter_container_add_actor (CLUTTER_CONTAINER (stage), texture);
|
|
|
|
/* animation for the period property of the effect,
|
|
* to animate its value between 0.0 and 1.0 and back
|
|
*/
|
|
transitions = clutter_state_new ();
|
|
clutter_state_set_duration (transitions, NULL, NULL, 500);
|
|
|
|
clutter_state_set_duration (transitions,
|
|
"partially-folded",
|
|
"folded",
|
|
375);
|
|
|
|
clutter_state_set (transitions, NULL, "folded",
|
|
effect, "period", CLUTTER_LINEAR, 1.0,
|
|
NULL);
|
|
|
|
clutter_state_set (transitions, NULL, "partially-folded",
|
|
effect, "period", CLUTTER_LINEAR, 0.25,
|
|
NULL);
|
|
|
|
clutter_state_set (transitions, NULL, "unfolded",
|
|
effect, "period", CLUTTER_LINEAR, 0.0,
|
|
NULL);
|
|
|
|
clutter_state_warp_to_state (transitions, "partially-folded");
|
|
|
|
g_signal_connect (texture,
|
|
"button-press-event",
|
|
G_CALLBACK (button_pressed_cb),
|
|
transitions);
|
|
|
|
clutter_actor_show (stage);
|
|
|
|
clutter_main ();
|
|
|
|
g_object_unref (transitions);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|