Refactor a bit the color stuff. Python doesn't seem to like initializing class members with an instance of the class itself. Initial frame control implementation.

sugar/graphics/Makefile.am

@@ -2,9 +2,11 @@ sugardir = $(pythondir)/sugar/graphics
 sugar_PYTHON =			\
 	__init__.py		\
 	bubble.py		\
-	button.py           \
+	button.py           	\
 	canvasicon.py		\
+        color.py		\
 	ClipboardBubble.py	\
+	frame.py		\
 	grid.py			\
 	iconcolor.py		\
 	menu.py			\
@@ -14,5 +16,5 @@ sugar_PYTHON =			\
 	spreadbox.py		\
 	style.py		\
 	stylesheet.py		\
-	timeline.py         \
+	timeline.py         	\
 	toolbar.py

sugar/graphics/color.py

@@ -1,5 +1,6 @@
 _system_colors = {
-    'toolbar-background' : '#414141'
+    'toolbar-background' : '#414141',
+    'frame-border'       : '#D1D1D2'
 }
 
 def _html_to_rgb(html_color):
@@ -17,22 +18,33 @@ def _html_to_rgb(html_color):
 
     return (r, g, b)
 
-class Color(object):
-    RED   = Color(1.0, 0.0, 0.0)
-    GREEN = Color(0.0, 1.0, 0.0)
-    BLUE  = Color(0.0, 0.0, 1.0)
+def _rgba_to_int(r, g, b, a):
+    color = int(a * 255) + (int(b * 255) << 8) + \
+            (int(g * 255) << 16) + (int(r * 255) << 24)
+    return color
 
+class RGBColor(object):
     def __init__(self, r, g, b, a=1.0):
         self._r = r
         self._g = g
         self._b = b
+        self._a = a
 
-    def to_rgb(self):
-        return (self._r, self._g, self._b)
+    def get_rgba(self):
+        return (self._r, self._g, self._b, self._a)
 
-class SystemColor(Color):
-    TOOLBAR_BACKGROUND = SystemColor('toolbar-background')
+    def get_int(self):
+        return _rgba_to_int(self._r, self._g, self._b, self._a)
 
+class SystemColor(RGBColor):
     def __init__(self, color_id):
         rgb = _html_to_rgb(_system_colors[color_id])
-        Color.__init__(*rgb)
+        RGBColor.__init__(self, *rgb)
+
+class Color(object):
+    RED                = RGBColor(1.0, 0.0, 0.0)
+    GREEN              = RGBColor(0.0, 1.0, 0.0)
+    BLUE               = RGBColor(0.0, 0.0, 1.0)
+
+    TOOLBAR_BACKGROUND = SystemColor('toolbar-background')
+    FRAME_BORDER       = SystemColor('frame-border')

sugar/graphics/frame.py

@@ -0,0 +1,54 @@
+# Copyright (C) 2006, Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+import math
+
+import hippo
+
+from sugar.graphics.color import Color
+
+class Frame(hippo.CanvasBox, hippo.CanvasItem):
+    __gtype_name__ = 'SugarFrame'
+
+    def __init__(self, **kwargs):
+        hippo.CanvasBox.__init__(self, **kwargs)
+
+        self._line_width = 3.0
+        self._radius = 30
+        self._border_color = Color.FRAME_BORDER
+
+    def do_paint_below_children(self, cr, damaged_box):
+        [width, height] = self.get_allocation()
+
+        x = self._line_width
+        y = self._line_width
+        width -= self._line_width * 2
+        height -= self._line_width * 2
+
+        cr.move_to(x + self._radius, y);
+        cr.arc(x + width - self._radius, y + self._radius,
+               self._radius, math.pi * 1.5, math.pi * 2);
+        cr.arc(x + width - self._radius, x + height - self._radius,
+               self._radius, 0, math.pi * 0.5);
+        cr.arc(x + self._radius, y + height - self._radius,
+               self._radius, math.pi * 0.5, math.pi);
+        cr.arc(x + self._radius, y + self._radius, self._radius,
+               math.pi, math.pi * 1.5);
+
+        cr.set_source_rgba(*self._border_color.get_rgba())
+        cr.set_line_width(self._line_width)
+        cr.stroke()

tests/test-frame.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+# Copyright (C) 2006, Red Hat, Inc.
+#
+# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import gtk
+import hippo
+
+from sugar.graphics.frame import Frame
+
+window = gtk.Window()
+window.connect("destroy", lambda w: gtk.main_quit())
+window.show()
+
+canvas = hippo.Canvas()
+
+frame = Frame()
+canvas.set_root(frame)
+
+window.add(canvas)
+canvas.show()
+
+gtk.main()