/* GdkPixbuf library - test compositing
*
* Copyright (C) 2015 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*
* Author: Matthias Clasen
*/
#include
#include "test-common.h"
static void
test_composite1 (void)
{
GdkPixbuf *red, *green, *out, *ref, *sub;
red = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, 24, 24);
gdk_pixbuf_fill (red, 0xff000000);
green = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, 12, 12);
gdk_pixbuf_fill (green, 0x00ff0000);
out = gdk_pixbuf_copy (red);
gdk_pixbuf_composite (green, out,
0, 0, 12, 12,
0, 0, 1.0, 1.0,
GDK_INTERP_NEAREST,
255);
ref = gdk_pixbuf_copy (red);
sub = gdk_pixbuf_new_subpixbuf (ref, 0, 0, 12, 12);
gdk_pixbuf_fill (sub, 0x00ff0000);
g_assert (pixdata_equal (out, ref, NULL));
g_object_unref (red);
g_object_unref (green);
g_object_unref (out);
g_object_unref (ref);
g_object_unref (sub);
}
/*
* Test for Bug 766842
* https://bugzilla.gnome.org/show_bug.cgi?id=766842
*/
static void
test_composite2 (void)
{
GdkPixbuf *src, *dest;
guchar *pixels, *p;
src = gdk_pixbuf_new_from_file (g_test_get_filename (G_TEST_DIST, "test-image.png", NULL), NULL);
{
GdkPixbuf *tmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
gdk_pixbuf_get_bits_per_sample (src),
gdk_pixbuf_get_width (src),
gdk_pixbuf_get_height (src));
gdk_pixbuf_fill (tmp, 0x00ccccff);
gdk_pixbuf_composite (src, tmp,
0, 0, gdk_pixbuf_get_width (tmp), gdk_pixbuf_get_height (tmp),
0., 0., 1., 1.,
GDK_INTERP_NEAREST, 255);
g_object_unref (src);
src = tmp;
}
pixels = gdk_pixbuf_get_pixels (src);
p = pixels;
p[0] = 0xff;
p[1] = 0x00;
p[2] = 0xff;
p = pixels + (gsize)((gdk_pixbuf_get_height (src) - 1) * gdk_pixbuf_get_rowstride (src)) + (gsize)((gdk_pixbuf_get_width (src) - 1) * gdk_pixbuf_get_n_channels (src));
p[0] = 0xff;
p[1] = 0xff;
p[2] = 0x00;
dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
gdk_pixbuf_get_bits_per_sample (src),
gdk_pixbuf_get_width (src) + 80,
gdk_pixbuf_get_height (src) + 80);
gdk_pixbuf_fill (dest, 0xffffffff);
gdk_pixbuf_composite (src, dest,
0, 0, gdk_pixbuf_get_width (dest), gdk_pixbuf_get_height (dest),
10.0, 10.0, 1.0, 1.0,
GDK_INTERP_NEAREST, 255);
pixels = gdk_pixbuf_get_pixels (dest);
p = pixels;
g_assert_cmpint (p[0], ==, 0xff);
g_assert_cmpint (p[1], ==, 0x00);
g_assert_cmpint (p[2], ==, 0xff);
p = pixels + (gsize)((gdk_pixbuf_get_height (dest) - 1) * gdk_pixbuf_get_rowstride (dest)) + (gsize)((gdk_pixbuf_get_width (dest) - 1) * gdk_pixbuf_get_n_channels (dest));
g_assert_cmpint (p[0], ==, 0xff);
g_assert_cmpint (p[1], ==, 0xff);
g_assert_cmpint (p[2], ==, 0x00);
g_object_unref (dest);
/* now try compositing into a pixbuf that is 1px less in width and height */
dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
gdk_pixbuf_get_bits_per_sample (src),
gdk_pixbuf_get_width (src) - 1,
gdk_pixbuf_get_height (src) - 1);
gdk_pixbuf_fill (dest, 0xffffffff);
gdk_pixbuf_composite (src, dest,
0, 0, gdk_pixbuf_get_width (dest), gdk_pixbuf_get_height (dest),
-1.0, -2.0, 1.0, 1.0,
GDK_INTERP_NEAREST, 255);
pixels = gdk_pixbuf_get_pixels (dest);
p = pixels + (gsize)((gdk_pixbuf_get_height (dest) - 2) * gdk_pixbuf_get_rowstride (dest)) + (gsize)((gdk_pixbuf_get_width (dest) - 1) * gdk_pixbuf_get_n_channels (dest));
g_assert_cmpint (p[0], ==, 0xff);
g_assert_cmpint (p[1], ==, 0xff);
g_assert_cmpint (p[2], ==, 0x00);
p = pixels + (gsize)((gdk_pixbuf_get_height (dest) - 1) * gdk_pixbuf_get_rowstride (dest)) + (gsize)((gdk_pixbuf_get_width (dest) - 1) * gdk_pixbuf_get_n_channels (dest));
g_assert_cmpint (p[0], ==, 0xff);
g_assert_cmpint (p[1], ==, 0xff);
g_assert_cmpint (p[2], ==, 0x00);
g_object_unref (dest);
g_object_unref (src);
}
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/pixbuf/composite1", test_composite1);
g_test_add_func ("/pixbuf/composite2", test_composite2);
return g_test_run ();
}