mutter/tests/test-opacity.c
Emmanuele Bassi 8c451b8a67 2008-02-20 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-actor.h:
	* clutter/clutter-actor.c:
	(clutter_actor_get_abs_opacity): Add function that does what
	get_opacity() does now...

	(clutter_actor_get_opacity): ... and make get_opacity() do what
	it's supposed to be doing. The original get_opacity() returned
	a composited value, and there's no way to actually extract the
	real opacity value set with set_opacity().

	* clutter/clutter-clone-texture.c:
	* clutter/clutter-rectangle.c:
	* clutter/clutter-texture.c: Update to use get_abs_opacity().

	* clutter/clutter-entry.c:
	* clutter/clutter-label.c: Ditto. Also, never change the stored
	alpha value. (#804)

	* tests/Makefile.am:
	* tests/test-opacity.c: Test suite for the get_opacity() and
	get_abs_opacity() API, and correct opacity handling.

	* README: Add note about the change in get_opacity().
2008-02-20 10:59:47 +00:00

116 lines
3.8 KiB
C

#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <clutter/clutter.h>
int
main (int argc, char *argv[])
{
ClutterActor *stage, *group1, *group2, *label, *rect;
ClutterColor label_color = { 255, 0, 0, 128 };
ClutterColor rect_color = { 0, 0, 255, 255 };
ClutterColor color_check = { 0, };
clutter_init (&argc, &argv);
stage = clutter_stage_get_default ();
label = clutter_label_new_with_text ("Sans 18px", "Label, 50% opacity");
clutter_label_set_color (CLUTTER_LABEL (label), &label_color);
g_print ("label 50%%.get_color()/1\n");
clutter_label_get_color (CLUTTER_LABEL (label), &color_check);
g_assert (color_check.alpha == label_color.alpha);
clutter_container_add (CLUTTER_CONTAINER (stage), label, NULL);
clutter_actor_set_position (label, 10, 10);
g_print ("label 50%%.get_color()/2\n");
clutter_label_get_color (CLUTTER_LABEL (label), &color_check);
g_assert (color_check.alpha == label_color.alpha);
g_print ("label 50%%.get_abs_opacity() = %d\n",
clutter_actor_get_abs_opacity (label));
g_assert (clutter_actor_get_abs_opacity (label) == 128);
clutter_actor_show (label);
group1 = clutter_group_new ();
clutter_actor_set_opacity (group1, 128);
clutter_container_add (CLUTTER_CONTAINER (stage), group1, NULL);
clutter_actor_set_position (group1, 10, 30);
clutter_actor_show (group1);
label = clutter_label_new_with_text ("Sans 18px", "Label+Group, 25% opacity");
clutter_label_set_color (CLUTTER_LABEL (label), &label_color);
g_print ("label 50%% + group 50%%.get_color()/1\n");
clutter_label_get_color (CLUTTER_LABEL (label), &color_check);
g_assert (color_check.alpha == label_color.alpha);
clutter_container_add (CLUTTER_CONTAINER (group1), label, NULL);
g_print ("label 50%% + group 50%%.get_color()/2\n");
clutter_label_get_color (CLUTTER_LABEL (label), &color_check);
g_assert (color_check.alpha == label_color.alpha);
g_print ("label 50%% + group 50%%.get_abs_opacity() = %d\n",
clutter_actor_get_abs_opacity (label));
g_assert (clutter_actor_get_abs_opacity (label) == 64);
clutter_actor_show (label);
group2 = clutter_group_new ();
clutter_container_add (CLUTTER_CONTAINER (group1), group2, NULL);
clutter_actor_set_position (group2, 10, 60);
clutter_actor_show (group2);
rect = clutter_rectangle_new_with_color (&rect_color);
clutter_actor_set_size (rect, 128, 128);
g_print ("rect 100%% + group 100%% + group 50%%.get_color()/1\n");
clutter_rectangle_get_color (CLUTTER_RECTANGLE (rect), &color_check);
g_assert (color_check.alpha == rect_color.alpha);
clutter_container_add (CLUTTER_CONTAINER (group2), rect, NULL);
g_print ("rect 100%% + group 100%% + group 50%%.get_color()/2\n");
clutter_rectangle_get_color (CLUTTER_RECTANGLE (rect), &color_check);
g_assert (color_check.alpha == rect_color.alpha);
g_print ("rect 100%%.get_abs_opacity() = %d\n",
clutter_actor_get_abs_opacity (rect));
g_assert (clutter_actor_get_abs_opacity (rect) == 128);
clutter_actor_show (rect);
rect = clutter_rectangle_new_with_color (&rect_color);
clutter_actor_set_size (rect, 128, 128);
clutter_actor_set_position (rect, 150, 90);
g_print ("rect 100%%.get_color()/1\n");
clutter_rectangle_get_color (CLUTTER_RECTANGLE (rect), &color_check);
g_assert (color_check.alpha == rect_color.alpha);
clutter_container_add (CLUTTER_CONTAINER (stage), rect, NULL);
g_print ("rect 100%%.get_color()/2\n");
clutter_rectangle_get_color (CLUTTER_RECTANGLE (rect), &color_check);
g_assert (color_check.alpha == rect_color.alpha);
g_print ("rect 100%%.get_abs_opacity() = %d\n",
clutter_actor_get_abs_opacity (rect));
g_assert (clutter_actor_get_abs_opacity (rect) == 255);
clutter_actor_show (rect);
clutter_actor_show_all (stage);
clutter_main ();
return EXIT_SUCCESS;
}