153 lines
4.9 KiB
C
153 lines
4.9 KiB
C
#include <stdlib.h>
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#include <clutter/clutter.h>
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#define SIZE 128
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static gboolean
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animate_color (ClutterActor *actor,
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ClutterEvent *event)
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{
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static gboolean toggled = TRUE;
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const ClutterColor *end_color;
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if (toggled)
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end_color = CLUTTER_COLOR_Blue;
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else
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end_color = CLUTTER_COLOR_Red;
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clutter_actor_save_easing_state (actor);
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clutter_actor_set_easing_duration (actor, 500);
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clutter_actor_set_easing_mode (actor, CLUTTER_LINEAR);
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clutter_actor_set_background_color (actor, end_color);
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clutter_actor_restore_easing_state (actor);
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toggled = !toggled;
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return CLUTTER_EVENT_STOP;
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}
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static gboolean
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on_crossing (ClutterActor *actor,
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ClutterEvent *event)
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{
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gboolean is_enter = clutter_event_type (event) == CLUTTER_ENTER;
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float zpos;
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if (is_enter)
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zpos = -250.0;
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else
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zpos = 0.0;
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clutter_actor_save_easing_state (actor);
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clutter_actor_set_easing_duration (actor, 500);
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clutter_actor_set_easing_mode (actor, CLUTTER_EASE_OUT_BOUNCE);
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clutter_actor_set_z_position (actor, zpos);
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clutter_actor_restore_easing_state (actor);
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return CLUTTER_EVENT_STOP;
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}
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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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clutter_actor_save_easing_state (actor);
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clutter_actor_set_rotation_angle (actor, CLUTTER_Y_AXIS, 0.0f);
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clutter_actor_restore_easing_state (actor);
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/* disconnect so we don't get multiple notifications */
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g_signal_handlers_disconnect_by_func (actor,
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on_transition_stopped,
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NULL);
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}
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static gboolean
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animate_rotation (ClutterActor *actor,
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ClutterEvent *event)
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{
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clutter_actor_save_easing_state (actor);
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clutter_actor_set_easing_duration (actor, 1000);
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clutter_actor_set_rotation_angle (actor, CLUTTER_Y_AXIS, 360.0);
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clutter_actor_restore_easing_state (actor);
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/* get a notification when the rotation-angle-y transition ends */
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g_signal_connect (actor,
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"transition-stopped::rotation-angle-y",
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G_CALLBACK (on_transition_stopped),
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NULL);
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return CLUTTER_EVENT_STOP;
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}
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int
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main (int argc, char *argv[])
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{
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ClutterActor *stage, *vase;
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ClutterActor *flowers[3];
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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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g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Three Flowers in a Vase");
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clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
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/* there are three flowers in a vase */
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vase = clutter_actor_new ();
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clutter_actor_set_name (vase, "vase");
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clutter_actor_set_layout_manager (vase, clutter_box_layout_new ());
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clutter_actor_set_background_color (vase, CLUTTER_COLOR_LightSkyBlue);
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clutter_actor_add_constraint (vase, clutter_align_constraint_new (stage, CLUTTER_ALIGN_BOTH, 0.5));
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clutter_actor_add_child (stage, vase);
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flowers[0] = clutter_actor_new ();
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clutter_actor_set_name (flowers[0], "flower.1");
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clutter_actor_set_size (flowers[0], SIZE, SIZE);
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clutter_actor_set_margin_left (flowers[0], 12);
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clutter_actor_set_background_color (flowers[0], CLUTTER_COLOR_Red);
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clutter_actor_set_reactive (flowers[0], TRUE);
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clutter_actor_add_child (vase, flowers[0]);
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g_signal_connect (flowers[0], "button-press-event",
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G_CALLBACK (animate_color),
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NULL);
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flowers[1] = clutter_actor_new ();
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clutter_actor_set_name (flowers[1], "flower.2");
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clutter_actor_set_size (flowers[1], SIZE, SIZE);
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clutter_actor_set_margin_top (flowers[1], 12);
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clutter_actor_set_margin_left (flowers[1], 6);
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clutter_actor_set_margin_right (flowers[1], 6);
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clutter_actor_set_margin_bottom (flowers[1], 12);
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clutter_actor_set_background_color (flowers[1], CLUTTER_COLOR_Yellow);
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clutter_actor_set_reactive (flowers[1], TRUE);
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clutter_actor_add_child (vase, flowers[1]);
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g_signal_connect (flowers[1], "enter-event",
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G_CALLBACK (on_crossing),
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NULL);
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g_signal_connect (flowers[1], "leave-event",
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G_CALLBACK (on_crossing),
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NULL);
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/* the third one is green */
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flowers[2] = clutter_actor_new ();
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clutter_actor_set_name (flowers[2], "flower.3");
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clutter_actor_set_size (flowers[2], SIZE, SIZE);
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clutter_actor_set_margin_right (flowers[2], 12);
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clutter_actor_set_background_color (flowers[2], CLUTTER_COLOR_Green);
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clutter_actor_set_pivot_point (flowers[2], 0.5f, 0.0f);
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clutter_actor_set_reactive (flowers[2], TRUE);
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clutter_actor_add_child (vase, flowers[2]);
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g_signal_connect (flowers[2], "button-press-event",
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G_CALLBACK (animate_rotation),
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NULL);
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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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