Initial commit

Moved from git.sl.org/sweetener/sweetener
Signed-off-by: Daniel Francis <francis@sugarlabs.org>

1 files changed, 88 insertions, 0 deletions

diff --git a/colors.py b/colors.py
new file mode 100644
index 0000000..cff7ca1
--- /dev/null
+++ b/colors.py
@@ -0,0 +1,88 @@
+"""Color handling.
+Utilities for handle color data and conversions.
+"""
+# XOColor from Sugar Toolkit:
+#     Copyright (C) 2006-2007 Red Hat, Inc.
+#
+# Adaptation and more:
+#     Copyright (C) 2012 Daniel Francis
+#
+# 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 3 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.
+
+import logging
+logger = logging.getLogger('colors')
+
+# Part from Sugar Toolkit with very few adaptations.
+
+def _parse_string(color_string):
+    if not isinstance(color_string, (str, unicode)):
+        logging.error('Invalid color string: %r', color_string)
+        return None
+
+    if color_string == 'white':
+        return ['#ffffff', '#414141']
+    elif color_string == 'insensitive':
+        return ['#ffffff', '#e2e2e2']
+
+    splitted = color_string.split(',')
+    if len(splitted) == 2:
+        return [splitted[0], splitted[1]]
+    else:
+        return None
+
+
+def is_valid(color_string):
+    return (_parse_string(color_string) != None)
+
+
+class XoColor:
+
+    def __init__(self, color_string):
+        if not is_valid(color_string):
+            logger.debug('Color string is not valid: %s, '
+                          'fallback to default', color_string)
+            raise Exception
+
+        [self.stroke, self.fill] = _parse_string(color_string)
+
+    def __cmp__(self, other):
+        if isinstance(other, XoColor):
+            if self.stroke == other.stroke and self.fill == other.fill:
+                return 0
+        return -1
+
+    def get_stroke_color(self):
+        return self.stroke
+
+    def get_fill_color(self):
+        return self.fill
+
+    def to_string(self):
+        return '%s,%s' % (self.stroke, self.fill)
+
+
+# Added in Sweetener
+def color2string(color):
+    """Converts a GdkColor to a RGB string
+    color -- gtk.gdk.Color
+    """
+    color_string = ["#"]
+    color_string.append("%02x" % (color.red / 256))
+    color_string.append("%02x" % (color.green / 256))
+    color_string.append("%02x" % (color.blue / 256))
+    string = "".join(color_string)
+    #logger.debug(str(color) + ' ' + string)
+    return string