/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* GdkPixbuf library - test program
*
* Copyright (C) 1999 The Free Software Foundation
*
* Author: Federico Mena-Quintero <federico@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include "gdk-pixbuf.h"
#include <glib-object.h>
static void
store_pixel (guchar *pixels,
int pixel,
gboolean alpha)
{
if (alpha) {
pixels[0] = pixel >> 24;
pixels[1] = pixel >> 16;
pixels[2] = pixel >> 8;
pixels[3] = pixel;
} else {
pixels[0] = pixel >> 16;
pixels[1] = pixel >> 8;
pixels[2] = pixel;
}
}
static void
fill_with_pixel (GdkPixbuf *pixbuf,
int pixel)
{
int x, y;
for (x = 0; x < gdk_pixbuf_get_width (pixbuf); x++) {
for (y = 0; y < gdk_pixbuf_get_height (pixbuf); y++) {
store_pixel (gdk_pixbuf_get_pixels (pixbuf)
+ y * gdk_pixbuf_get_rowstride (pixbuf)
+ x * gdk_pixbuf_get_n_channels (pixbuf),
pixel,
gdk_pixbuf_get_has_alpha (pixbuf));
}
}
}
static int
load_pixel (const guchar *pixels,
gboolean alpha)
{
if (alpha)
return (((((pixels[0] << 8) | pixels[1]) << 8) | pixels[2]) << 8) | pixels[3];
else
return (((pixels[0] << 8) | pixels[1]) << 8) | pixels[2];
}
static gboolean
simple_composite_test_one (GdkInterpType type,
int source_pixel,
gboolean source_alpha,
int destination_pixel,
gboolean destination_alpha,
int expected_result)
{
GdkPixbuf *source_pixbuf;
GdkPixbuf *destination_pixbuf;
int result_pixel;
source_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, source_alpha, 8, 32, 32);
destination_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, destination_alpha, 8, 32, 32);
fill_with_pixel (source_pixbuf, source_pixel);
fill_with_pixel (destination_pixbuf, destination_pixel);
gdk_pixbuf_composite (source_pixbuf, destination_pixbuf,
0, 0, 32, 32, 0, 0, 1, 1, type, 0xFF);
result_pixel = load_pixel (gdk_pixbuf_get_pixels (destination_pixbuf)
+ 16 * gdk_pixbuf_get_rowstride (destination_pixbuf)
+ 16 * gdk_pixbuf_get_n_channels (destination_pixbuf),
destination_alpha);
g_object_unref (source_pixbuf);
g_object_unref (destination_pixbuf);
if (result_pixel != expected_result) {
char *interpolation_type, *source_string, *destination_string, *result_string, *expected_string;
switch (type) {
case GDK_INTERP_NEAREST: interpolation_type = "GDK_INTERP_NEAREST"; break;
case GDK_INTERP_TILES: interpolation_type = "GDK_INTERP_TILES"; break;
case GDK_INTERP_BILINEAR: interpolation_type = "GDK_INTERP_BILINEAR"; break;
case GDK_INTERP_HYPER: interpolation_type = "GDK_INTERP_HYPER"; break;
default: interpolation_type = "???";
}
if (source_alpha) {
source_string = g_strdup_printf ("0x%08X", source_pixel);
} else {
source_string = g_strdup_printf ("0x%06X", source_pixel);
}
if (destination_alpha) {
destination_string = g_strdup_printf ("0x%08X", destination_pixel);
result_string = g_strdup_printf ("0x%08X", result_pixel);
expected_string = g_strdup_printf ("0x%08X", expected_result);
} else {
destination_string = g_strdup_printf ("0x%06X", destination_pixel);
result_string = g_strdup_printf ("0x%06X", result_pixel);
expected_string = g_strdup_printf ("0x%06X", expected_result);
}
g_message ("simple_composite_test (%s): composite %s on top of %s, expected %s, got %s",
interpolation_type,
source_string, destination_string, expected_string, result_string);
return FALSE;
}
return TRUE;
}
static gboolean
simple_composite_test_one_type (GdkInterpType type)
{
gboolean success;
success = TRUE;
/* There are only a few trivial cases in here.
* But these were enough to expose the problems in the old composite code.
*/
/* Non-alpha into non-alpha. */
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x000000, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0xFFFFFF, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0xFF0000, FALSE, 0x000000, FALSE, 0xFF0000);
success &= simple_composite_test_one (type, 0x00FF00, FALSE, 0x000000, FALSE, 0x00FF00);
success &= simple_composite_test_one (type, 0x0000FF, FALSE, 0x000000, FALSE, 0x0000FF);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0xFF0000, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x00FF00, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x0000FF, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x00FF00, FALSE, 0xFFFFFF, FALSE, 0x00FF00);
success &= simple_composite_test_one (type, 0xFFFFFF, FALSE, 0xFFFFFF, FALSE, 0xFFFFFF);
/* Alpha into non-alpha. */
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x000000, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0xFFFFFF, FALSE, 0xFFFFFF);
success &= simple_composite_test_one (type, 0x0000007F, TRUE, 0xFFFFFF, FALSE, 0x808080);
success &= simple_composite_test_one (type, 0x00000080, TRUE, 0xFFFFFF, FALSE, 0x7F7F7F);
success &= simple_composite_test_one (type, 0x000000FF, TRUE, 0xFFFFFF, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0x000000FF, TRUE, 0xFFFFFF, FALSE, 0x000000);
success &= simple_composite_test_one (type, 0xFF0000FF, TRUE, 0x000000, FALSE, 0xFF0000);
success &= simple_composite_test_one (type, 0x00FF00FF, TRUE, 0x000000, FALSE, 0x00FF00);
success &= simple_composite_test_one (type, 0x0000FFFF, TRUE, 0x000000, FALSE, 0x0000FF);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0xFF0000, FALSE, 0xFF0000);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x00FF00, FALSE, 0x00FF00);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x0000FF, FALSE, 0x0000FF);
success &= simple_composite_test_one (type, 0x00FF0080, TRUE, 0xFFFFFF, FALSE, 0x7FFF7F);
success &= simple_composite_test_one (type, 0xFFFFFFFF, TRUE, 0xFFFFFF, FALSE, 0xFFFFFF);
/* Non-alpha into alpha. */
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x00000000, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0xFFFFFFFF, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0xFF0000, FALSE, 0x00000000, TRUE, 0xFF0000FF);
success &= simple_composite_test_one (type, 0x00FF00, FALSE, 0x00000000, TRUE, 0x00FF00FF);
success &= simple_composite_test_one (type, 0x0000FF, FALSE, 0x00000000, TRUE, 0x0000FFFF);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0xFF0000FF, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x00FF00FF, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0x000000, FALSE, 0x0000FFFF, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0x00FF00, FALSE, 0xFFFFFF00, TRUE, 0x00FF00FF);
success &= simple_composite_test_one (type, 0xFFFFFF, FALSE, 0xFFFFFFFF, TRUE, 0xFFFFFFFF);
/* Alpha into alpha. */
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x00000000, TRUE, 0x00000000);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0xFFFFFFFF, TRUE, 0xFFFFFFFF);
success &= simple_composite_test_one (type, 0x0000007F, TRUE, 0xFFFFFFFF, TRUE, 0x808080FF);
success &= simple_composite_test_one (type, 0x00000080, TRUE, 0xFFFFFFFF, TRUE, 0x7F7F7FFF);
success &= simple_composite_test_one (type, 0x000000FF, TRUE, 0xFFFFFFFF, TRUE, 0x000000FF);
success &= simple_composite_test_one (type, 0xFF0000FF, TRUE, 0x00000000, TRUE, 0xFF0000FF);
success &= simple_composite_test_one (type, 0x00FF00FF, TRUE, 0x00000000, TRUE, 0x00FF00FF);
success &= simple_composite_test_one (type, 0x0000FFFF, TRUE, 0x00000000, TRUE, 0x0000FFFF);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0xFF0000FF, TRUE, 0xFF0000FF);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x00FF00FF, TRUE, 0x00FF00FF);
success &= simple_composite_test_one (type, 0x00000000, TRUE, 0x0000FFFF, TRUE, 0x0000FFFF);
success &= simple_composite_test_one (type, 0x00FF0080, TRUE, 0xFFFFFF00, TRUE, 0x00FF0080);
success &= simple_composite_test_one (type, 0xFF000080, TRUE, 0x00FF0040, TRUE, 0xCC32009F);
success &= simple_composite_test_one (type, 0xFFFFFFFF, TRUE, 0xFFFFFFFF, TRUE, 0xFFFFFFFF);
return success;
}
static gboolean
simple_composite_test (void)
{
gboolean success;
success = TRUE;
success &= simple_composite_test_one_type (GDK_INTERP_NEAREST);
success &= simple_composite_test_one_type (GDK_INTERP_TILES);
success &= simple_composite_test_one_type (GDK_INTERP_BILINEAR);
success &= simple_composite_test_one_type (GDK_INTERP_HYPER);
return success;
}
int
main (int argc, char **argv)
{
int result;
result = EXIT_SUCCESS;
/* Run some tests. */
if (!simple_composite_test ()) {
result = EXIT_FAILURE;
}
return result;
}