108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
#include <stdlib.h>
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#include <gmodule.h>
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#include <clutter/clutter.h>
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static const ClutterColor colors[] = {
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{ 255, 0, 0, 255 },
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{ 0, 255, 0, 255 },
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{ 0, 0, 255, 255 },
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};
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#define PADDING (64.0f)
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#define SIZE (64.0f)
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static void
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on_transition_stopped (ClutterActor *actor,
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const gchar *transition_name,
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gboolean is_finished)
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{
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g_print ("%s: transition stopped: %s (finished: %s)\n",
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clutter_actor_get_name (actor),
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transition_name,
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is_finished ? "yes" : "no");
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}
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G_MODULE_EXPORT const char *
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test_keyframe_transition_describe (void)
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{
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return "Demonstrate the keyframe transition.";
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}
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G_MODULE_EXPORT int
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test_keyframe_transition_main (int argc, char *argv[])
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{
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ClutterActor *stage;
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int i;
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if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
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return EXIT_FAILURE;
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stage = clutter_stage_new ();
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Keyframe Transitions");
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g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
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for (i = 0; i < 3; i++)
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{
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ClutterTransition *transition, *group;
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ClutterActor *rect;
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float cur_x, cur_y;
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float new_x, new_y;
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gchar *name;
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cur_x = PADDING;
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cur_y = PADDING + ((SIZE + PADDING) * i);
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new_x = clutter_actor_get_width (stage) - PADDING - SIZE;
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new_y = g_random_double_range (PADDING, clutter_actor_get_height (stage) - PADDING - SIZE);
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name = g_strdup_printf ("rect%02d", i);
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rect = clutter_actor_new ();
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clutter_actor_set_name (rect, name);
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clutter_actor_set_background_color (rect, &colors[i]);
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clutter_actor_set_size (rect, SIZE, SIZE);
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clutter_actor_set_position (rect, PADDING, cur_y);
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clutter_actor_add_child (stage, rect);
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group = clutter_transition_group_new ();
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clutter_timeline_set_duration (CLUTTER_TIMELINE (group), 2000);
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clutter_timeline_set_repeat_count (CLUTTER_TIMELINE (group), 1);
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clutter_timeline_set_auto_reverse (CLUTTER_TIMELINE (group), TRUE);
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transition = clutter_keyframe_transition_new ("x");
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clutter_transition_set_from (transition, G_TYPE_FLOAT, cur_x);
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clutter_transition_set_to (transition, G_TYPE_FLOAT, new_x);
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clutter_keyframe_transition_set (CLUTTER_KEYFRAME_TRANSITION (transition),
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G_TYPE_FLOAT, 1,
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0.5, new_x / 2.0f, CLUTTER_EASE_OUT_EXPO);
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clutter_transition_group_add_transition (CLUTTER_TRANSITION_GROUP (group), transition);
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g_object_unref (transition);
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transition = clutter_keyframe_transition_new ("y");
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clutter_transition_set_from (transition, G_TYPE_FLOAT, cur_y);
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clutter_transition_set_to (transition, G_TYPE_FLOAT, cur_y);
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clutter_keyframe_transition_set (CLUTTER_KEYFRAME_TRANSITION (transition),
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G_TYPE_FLOAT, 1,
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0.5, new_y, CLUTTER_EASE_OUT_EXPO);
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clutter_transition_group_add_transition (CLUTTER_TRANSITION_GROUP (group), transition);
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g_object_unref (transition);
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clutter_actor_add_transition (rect, "rectAnimation", group);
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g_signal_connect (rect, "transition-stopped",
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G_CALLBACK (on_transition_stopped),
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NULL);
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g_object_unref (group);
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g_free (name);
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}
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clutter_actor_show (stage);
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clutter_main ();
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return EXIT_SUCCESS;
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}
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