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mutter/doc/cookbook/examples/animations-reuse.c

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cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
#include <stdlib.h>
#include <clutter/clutter.h>
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
#define UI_FILE "animations-reuse-ui.json"
#define ANIMATION_FILE "animations-reuse-animation.json"
static gboolean
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
load_script_from_file (ClutterScript *script,
gchar *filename)
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
{
GError *error = NULL;
clutter_script_load_from_file (script, filename, &error);
if (error != NULL)
{
g_critical ("Error loading ClutterScript file %s\n%s", filename, error->message);
g_error_free (error);
exit (EXIT_FAILURE);
}
return TRUE;
}
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
gboolean
foo_button_pressed_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
ClutterScript *ui = CLUTTER_SCRIPT (user_data);
ClutterStage *stage = CLUTTER_STAGE (clutter_script_get_object (ui, "stage"));
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
ClutterScript *script;
ClutterActor *rig;
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
ClutterAnimator *animator;
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
/* load the rig and its animator from a JSON file */
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
script = clutter_script_new ();
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
/* use a function defined statically in this source file to load the JSON */
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
load_script_from_file (script, ANIMATION_FILE);
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
clutter_script_get_objects (script,
"rig", &rig,
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
"animator", &animator,
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
NULL);
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
/* remove the button press handler from the rectangle */
cookbooks/examples: Use g_signal_handlers_disconnect_by_func() The disconnect_matched() function is a bit too complicated, and its simpler wrapper disconnect_by_func() is functionally equivalent in the cases used by the cookbook examples.
2011-09-02 06:01:36 -04:00
g_signal_handlers_disconnect_by_func (actor,
G_CALLBACK (foo_button_pressed_cb),
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
NULL);
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
/* add a callback to clean up the script when the rig is destroyed */
g_object_set_data_full (G_OBJECT (rig), "script", script, g_object_unref);
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
/* add the rig to the stage */
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
clutter_container_add_actor (CLUTTER_CONTAINER (stage), rig);
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
/* place the rig at the same coordinates on the stage as the rectangle */
clutter_actor_set_position (rig,
clutter_actor_get_x (actor),
clutter_actor_get_y (actor));
/* put the rectangle into the top-left corner of the rig */
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
clutter_actor_reparent (actor, rig);
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
cookbook: Simplified and clarified example code Modified the "animation reuse" sample code to provide a simpler example to explain in the recipe. Also modified variable names to mirror the names used for the previous "complex animation" example and added some more comments, to further simplify and support the recipe.
2010-09-09 07:02:02 -04:00
clutter_actor_set_position (actor, 0, 0);
/* animate the rig */
clutter_animator_start (animator);
cookbook: Refactored reusable animation example Extracted the animation into its own JSON definition, then create a new script and get the animation each time a rectangle is clicked. Removes the need to reparent onto the background and copy property values to the rectangle after the animation, and generally much cleaner.
2010-09-01 05:21:23 -04:00
return TRUE;
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
}
int
main (int argc, char *argv[])
{
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
ClutterScript *script;
ClutterActor *stage;
doc: fix clutter_init() usage in examples 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
2011-02-21 19:44:55 -05:00
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
cookbook: Cleaned up the "animations reuse" example With some help from pippin, moved variable declarations into more sensible positions within their functions, changed a function name, and found a better way to unref a script once its associated actor has been destroyed.
2010-09-01 06:18:15 -04:00
script = clutter_script_new ();
load_script_from_file (script, UI_FILE);
cookbook: Added example for animation reuse recipe Added an example showing how to reuse a ClutterAnimator instance to animate multiple actors at different times using an animatable rig, combined with reparenting.
2010-08-31 12:42:37 -04:00
clutter_script_connect_signals (script, script);
clutter_script_get_objects (script,
"stage", &stage,
NULL);
clutter_actor_show (stage);
clutter_main ();
g_object_unref (script);
return EXIT_SUCCESS;
}
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