mirror of
https://github.com/brl/mutter.git
synced 2024-11-30 12:00:44 -05:00
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
#include <clutter/clutter.h>
|
|
|
|
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
|
|
static const ClutterColor yellow = { 0xaa, 0x99, 0x00, 0xff };
|
|
static const ClutterColor white = { 0xff, 0xff, 0xff, 0xff };
|
|
|
|
static gboolean
|
|
_pointer_enter_cb (ClutterActor *actor,
|
|
ClutterEvent *event,
|
|
gpointer user_data)
|
|
{
|
|
ClutterState *transitions = CLUTTER_STATE (user_data);
|
|
clutter_state_set_state (transitions, "fade-in");
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_pointer_leave_cb (ClutterActor *actor,
|
|
ClutterEvent *event,
|
|
gpointer user_data)
|
|
{
|
|
ClutterState *transitions = CLUTTER_STATE (user_data);
|
|
clutter_state_set_state (transitions, "fade-out");
|
|
return TRUE;
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
ClutterActor *stage;
|
|
ClutterLayoutManager *layout;
|
|
ClutterActor *box;
|
|
ClutterActor *rect;
|
|
ClutterActor *text;
|
|
ClutterState *transitions;
|
|
|
|
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
|
|
return 1;
|
|
|
|
stage = clutter_stage_new ();
|
|
clutter_stage_set_title (CLUTTER_STAGE (stage), "btn");
|
|
clutter_actor_set_background_color (stage, &stage_color);
|
|
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
|
|
|
|
layout = clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_FILL,
|
|
CLUTTER_BIN_ALIGNMENT_FILL);
|
|
|
|
box = clutter_actor_new ();
|
|
clutter_actor_set_layout_manager (box, layout);
|
|
clutter_actor_set_position (box, 25, 25);
|
|
clutter_actor_set_reactive (box, TRUE);
|
|
clutter_actor_set_size (box, 100, 30);
|
|
|
|
/* background for the button */
|
|
rect = clutter_rectangle_new_with_color (&yellow);
|
|
clutter_actor_add_child (box, rect);
|
|
|
|
/* text for the button */
|
|
text = clutter_text_new_full ("Sans 10pt", "Hover me", &white);
|
|
|
|
/*
|
|
* NB don't set the height, so the actor assumes the height of the text;
|
|
* then when added to the bin layout, it gets centred on it;
|
|
* also if you don't set the width, the layout goes gets really wide;
|
|
* the 10pt text fits inside the 30px height of the rectangle
|
|
*/
|
|
clutter_actor_set_width (text, 100);
|
|
clutter_bin_layout_add (CLUTTER_BIN_LAYOUT (layout),
|
|
text,
|
|
CLUTTER_BIN_ALIGNMENT_CENTER,
|
|
CLUTTER_BIN_ALIGNMENT_CENTER);
|
|
|
|
/* animations */
|
|
transitions = clutter_state_new ();
|
|
clutter_state_set (transitions, NULL, "fade-out",
|
|
box, "opacity", CLUTTER_LINEAR, 180,
|
|
NULL);
|
|
|
|
/*
|
|
* NB you can't use an easing mode where alpha > 1.0 if you're
|
|
* animating to a value of 255, as the value you're animating
|
|
* to will possibly go > 255
|
|
*/
|
|
clutter_state_set (transitions, NULL, "fade-in",
|
|
box, "opacity", CLUTTER_LINEAR, 255,
|
|
NULL);
|
|
|
|
clutter_state_set_duration (transitions, NULL, NULL, 50);
|
|
|
|
clutter_state_warp_to_state (transitions, "fade-out");
|
|
|
|
g_signal_connect (box,
|
|
"enter-event",
|
|
G_CALLBACK (_pointer_enter_cb),
|
|
transitions);
|
|
|
|
g_signal_connect (box,
|
|
"leave-event",
|
|
G_CALLBACK (_pointer_leave_cb),
|
|
transitions);
|
|
|
|
/* bind the stage size to the box size + 50px in each axis */
|
|
clutter_actor_add_constraint (stage, clutter_bind_constraint_new (box, CLUTTER_BIND_HEIGHT, 50.0));
|
|
clutter_actor_add_constraint (stage, clutter_bind_constraint_new (box, CLUTTER_BIND_WIDTH, 50.0));
|
|
|
|
clutter_actor_add_child (stage, box);
|
|
|
|
clutter_actor_show (stage);
|
|
|
|
clutter_main ();
|
|
|
|
g_object_unref (transitions);
|
|
|
|
return 0;
|
|
}
|