Refactor stylsheets code a bit to load the global stylsheet

for all modules.
Implement the links sidebar per discussion with Eben.

shell/view/stylesheet.py

@@ -18,71 +18,37 @@ import gtk
 import hippo
 
 from sugar.graphics.iconcolor import IconColor
-
-_screen_factor = gtk.gdk.screen_width() / 1200.0
-
-_standard_icon_size = int(75.0 * _screen_factor)
-_small_icon_size = _standard_icon_size * 0.5
-_medium_icon_size = _standard_icon_size * 1.5
-_large_icon_size = _standard_icon_size * 2.0
-_xlarge_icon_size = _standard_icon_size * 3.0
-
-_space_unit = 9 * _screen_factor
-_separator_thickness = 3 * _screen_factor
-
-def _font_description(style, relative_size):
-	base_size = 18 * _screen_factor
-	return '%s %dpx' % (style, int(base_size * relative_size))
+from sugar.graphics import style
 
 frame_ActivityIcon = {
 	'color' : IconColor('white'),
-	'size'  : _standard_icon_size
+	'size'  : style.standard_icon_size
 }
 
 frame_ZoomIcon = {
-	'size' : _standard_icon_size
+	'size' : style.standard_icon_size
 }
 
 frame_BuddyIcon = {
-	'size' : _standard_icon_size
-}
-
-menu = {
-	'background_color' : 0x000000FF,
-	'spacing'		   : _space_unit,
-	'padding'		   : _space_unit
-}
-
-menu_Title = {
-	'color'	: 0xFFFFFFFF,
-	'font'	: _font_description('Bold', 1.2)
-}
-
-menu_Separator = {
-	'background_color' : 0xFFFFFFFF,
-	'box_height'       : _separator_thickness
-}
-
-menu_ActionIcon = {
-	'size' : _standard_icon_size
+	'size' : style.standard_icon_size
 }
 
 home_MyIcon = {
-	'size' : _xlarge_icon_size
+	'size' : style.xlarge_icon_size
 }
 
 ring_ActivityIcon = {
-	'size'  : _medium_icon_size
+	'size'  : style.medium_icon_size
 }
 
 friends_MyIcon = {
-	'size' : _large_icon_size
+	'size' : style.large_icon_size
 }
 
 friends_FriendIcon = {
-	'size' : _large_icon_size
+	'size' : style.large_icon_size
 }
 
 friends_ActivityIcon = {
-	'size' : _standard_icon_size
+	'size' : style.standard_icon_size
 }