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Diffstat (limited to 'src/egg-color.c')
| -rw-r--r-- | src/egg-color.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/egg-color.c b/src/egg-color.c new file mode 100644 index 0000000..2dcbca8 --- /dev/null +++ b/src/egg-color.c @@ -0,0 +1,157 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- + * + * Copyright (C) 2007-2008 Richard Hughes <[email protected]> + * + * Licensed under the GNU General Public License Version 2 + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <glib.h> +#include "egg-color.h" + +/** + * egg_color_from_rgb: + * @red: The red value + * @green: The green value + * @blue: The blue value + **/ +guint32 +egg_color_from_rgb (guint8 red, guint8 green, guint8 blue) +{ + guint32 color = 0; + color += (guint32) red * 0x10000; + color += (guint32) green * 0x100; + color += (guint32) blue; + return color; +} + +/** + * egg_color_to_rgb: + * @red: The red value + * @green: The green value + * @blue: The blue value + **/ +void +egg_color_to_rgb (guint32 color, guint8 *red, guint8 *green, guint8 *blue) +{ + *red = (color & 0xff0000) / 0x10000; + *green = (color & 0x00ff00) / 0x100; + *blue = color & 0x0000ff; +} + +/*************************************************************************** + *** MAKE CHECK TESTS *** + ***************************************************************************/ +#ifdef EGG_TEST +#include "egg-test.h" + +void +egg_color_test (gpointer data) +{ + guint8 r, g, b; + guint32 color; + EggTest *test = (EggTest *) data; + + if (egg_test_start (test, "EggColor") == FALSE) { + return; + } + + /************************************************************/ + egg_test_title (test, "get red"); + egg_color_to_rgb (0xff0000, &r, &g, &b); + if (r == 255 && g == 0 && b == 0) { + egg_test_success (test, "got red"); + } else { + egg_test_failed (test, "could not get red (%i, %i, %i)", r, g, b); + } + + /************************************************************/ + egg_test_title (test, "get green"); + egg_color_to_rgb (0x00ff00, &r, &g, &b); + if (r == 0 && g == 255 && b == 0) { + egg_test_success (test, "got green"); + } else { + egg_test_failed (test, "could not get green (%i, %i, %i)", r, g, b); + } + + /************************************************************/ + egg_test_title (test, "get blue"); + egg_color_to_rgb (0x0000ff, &r, &g, &b); + if (r == 0 && g == 0 && b == 255) { + egg_test_success (test, "got blue"); + } else { + egg_test_failed (test, "could not get blue (%i, %i, %i)", r, g, b); + } + + /************************************************************/ + egg_test_title (test, "get black"); + egg_color_to_rgb (0x000000, &r, &g, &b); + if (r == 0 && g == 0 && b == 0) { + egg_test_success (test, "got black"); + } else { + egg_test_failed (test, "could not get black (%i, %i, %i)", r, g, b); + } + + /************************************************************/ + egg_test_title (test, "get white"); + egg_color_to_rgb (0xffffff, &r, &g, &b); + if (r == 255 && g == 255 && b == 255) { + egg_test_success (test, "got white"); + } else { + egg_test_failed (test, "could not get white (%i, %i, %i)", r, g, b); + } + + /************************************************************/ + egg_test_title (test, "set red"); + color = egg_color_from_rgb (0xff, 0x00, 0x00); + if (color == 0xff0000) { + egg_test_success (test, "set red"); + } else { + egg_test_failed (test, "could not set red (%i)", color); + } + + /************************************************************/ + egg_test_title (test, "set green"); + color = egg_color_from_rgb (0x00, 0xff, 0x00); + if (color == 0x00ff00) { + egg_test_success (test, "set green"); + } else { + egg_test_failed (test, "could not set green (%i)", color); + } + + /************************************************************/ + egg_test_title (test, "set blue"); + color = egg_color_from_rgb (0x00, 0x00, 0xff); + if (color == 0x0000ff) { + egg_test_success (test, "set blue"); + } else { + egg_test_failed (test, "could not set blue (%i)", color); + } + + /************************************************************/ + egg_test_title (test, "set white"); + color = egg_color_from_rgb (0xff, 0xff, 0xff); + if (color == 0xffffff) { + egg_test_success (test, "set white"); + } else { + egg_test_failed (test, "could not set white (%i)", color); + } + + egg_test_end (test); +} + +#endif + |