/* -*- 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 * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include "gdk-pixbuf.h" #include "gdk-pixbuf-loader.h" #include "gnome-canvas-pixbuf.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); gdk_pixbuf_unref (source_pixbuf); gdk_pixbuf_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; }