mutter/doc/cookbook/examples/text-shadow.c
Emmanuele Bassi 90b74458d2 cookbook: Add an empty recipe for shadows under text
Currently, it's just an example and an image, but it should be easy to
flesh it out properly for the "Text" chapter.
2010-07-18 10:56:35 +01:00

60 lines
1.6 KiB
C

#include <stdlib.h>
#include <cogl/cogl.h>
#include <cogl-pango.h>
#include <clutter/clutter.h>
#define SHADOW_X_OFFSET 3
#define SHADOW_Y_OFFSET 3
static void
_text_paint_cb (ClutterActor *actor)
{
ClutterText *text = CLUTTER_TEXT (actor);
ClutterActorBox alloc = { 0, };
clutter_actor_get_allocation_box (actor, &alloc);
PangoLayout *layout;
layout = clutter_text_get_layout (text);
ClutterColor text_color = { 0, };
clutter_text_get_color (text, &text_color);
guint8 real_opacity;
real_opacity = clutter_actor_get_paint_opacity (actor)
* text_color.alpha
/ 255;
CoglColor color;
cogl_color_set_from_4ub (&color, 0xcc, 0xcc, 0xcc, real_opacity);
cogl_pango_render_layout (layout, SHADOW_X_OFFSET, SHADOW_Y_OFFSET, &color, 0);
}
int
main (int argc, char *argv[])
{
clutter_init (&argc, &argv);
ClutterActor *stage;
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Text shadow");
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
ClutterActor *text;
text = clutter_text_new ();
clutter_text_set_text (CLUTTER_TEXT (text), "Hello, World!");
clutter_text_set_font_name (CLUTTER_TEXT (text), "Sans 64px");
clutter_actor_add_constraint (text, clutter_align_constraint_new (stage, CLUTTER_ALIGN_X_AXIS, 0.5));
clutter_actor_add_constraint (text, clutter_align_constraint_new (stage, CLUTTER_ALIGN_Y_AXIS, 0.5));
g_signal_connect (text, "paint", G_CALLBACK (_text_paint_cb), NULL);
clutter_container_add (CLUTTER_CONTAINER (stage), text, NULL);
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}