mutter/doc/cookbook/examples/layouts-box-menu.c

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#include <stdlib.h>
#include <clutter/clutter.h>
#define FONT "Sans 20px"
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
static const ClutterColor yellow_color = { 0xaa, 0xaa, 0x00, 0xff };
static const ClutterColor black_color = { 0x00, 0x00, 0x00, 0xff };
static void
menu_run_option (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
g_debug ("%s pressed", (gchar *) user_data);
}
static void
menu_add_option (ClutterBox *menu,
gchar *text,
gchar *shortcut)
{
ClutterActor *entry;
entry = clutter_box_new (clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER));
clutter_box_set_color (CLUTTER_BOX (entry), &black_color);
clutter_actor_set_width (entry, 250);
clutter_actor_set_reactive (entry, TRUE);
clutter_box_pack (CLUTTER_BOX (entry),
clutter_text_new_full (FONT, text, &yellow_color),
"x-align", CLUTTER_BIN_ALIGNMENT_START,
NULL);
clutter_box_pack (CLUTTER_BOX (entry),
clutter_text_new_full (FONT, shortcut, &yellow_color),
"x-align", CLUTTER_BIN_ALIGNMENT_END,
NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (menu), entry);
g_signal_connect (entry,
"button-press-event",
G_CALLBACK (menu_run_option),
text);
}
static void
menu_toggle (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
ClutterAnimation *animation;
ClutterActor *menu = CLUTTER_ACTOR (user_data);
if (clutter_actor_get_animation (menu))
return;
if (clutter_actor_get_opacity (menu) > 0)
{
animation = clutter_actor_animate (menu, CLUTTER_EASE_OUT_CUBIC, 200,
"opacity", 0,
NULL);
/* hide the menu once it is fully transparent */
g_signal_connect_swapped (animation,
"completed",
G_CALLBACK (clutter_actor_hide),
menu);
}
else
{
clutter_actor_show (menu);
clutter_actor_animate (menu, CLUTTER_EASE_OUT_CUBIC, 200,
"opacity", 255,
NULL);
}
}
int
main (int argc,
char *argv[])
{
ClutterActor *stage;
ClutterActor *button;
ClutterLayoutManager *menu_layout;
ClutterActor *menu;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
stage = clutter_stage_new ();
clutter_actor_set_size (stage, 400, 400);
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
/* button */
button = clutter_box_new (clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER));
clutter_actor_set_width (button, 100);
clutter_actor_set_position (button, 50, 50);
clutter_actor_set_reactive (button, TRUE);
clutter_box_set_color (CLUTTER_BOX (button), &black_color);
clutter_box_pack (CLUTTER_BOX (button),
clutter_text_new_full (FONT, "Edit", &yellow_color),
"x-align", CLUTTER_BIN_ALIGNMENT_FILL,
"y-align", CLUTTER_BIN_ALIGNMENT_FILL,
NULL);
/* menu */
menu_layout = clutter_box_layout_new ();
clutter_box_layout_set_homogeneous (CLUTTER_BOX_LAYOUT (menu_layout), TRUE);
clutter_box_layout_set_vertical (CLUTTER_BOX_LAYOUT (menu_layout), TRUE);
clutter_box_layout_set_spacing (CLUTTER_BOX_LAYOUT (menu_layout), 2);
menu = clutter_box_new (menu_layout);
clutter_box_set_color (CLUTTER_BOX (menu), &yellow_color);
menu_add_option (CLUTTER_BOX (menu), "Undo", "Ctrl-z");
menu_add_option (CLUTTER_BOX (menu), "Redo", "Ctrl-Shift-z");
menu_add_option (CLUTTER_BOX (menu), "Cut", "Ctrl-x");
menu_add_option (CLUTTER_BOX (menu), "Copy", "Ctrl-c");
menu_add_option (CLUTTER_BOX (menu), "Paste", "Ctrl-v");
/* align left-hand side of menu with left-hand side of button */
clutter_actor_add_constraint (menu, clutter_align_constraint_new (button,
CLUTTER_ALIGN_X_AXIS,
0.0));
/* align top of menu with the bottom of the button */
clutter_actor_add_constraint (menu, clutter_bind_constraint_new (button,
CLUTTER_BIND_Y,
clutter_actor_get_height (button)));
/* hide the menu until we're ready to animate it in */
clutter_actor_set_opacity (menu, 0);
clutter_actor_hide (menu);
/* clicking on the button toggles the menu */
g_signal_connect (button, "button-press-event", G_CALLBACK (menu_toggle), menu);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), menu);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), button);
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}