moved from Mate-Extra

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
+