Get activity bar and activity creation to work

sugar/canvas/IconItem.py

@@ -3,52 +3,47 @@ import re
 import gobject
 import gtk
 import goocanvas
-import rsvg
 
-class IconView(goocanvas.ItemViewSimple):
-	def __init__(self, handle, canvas_view, parent_view):
-		goocanvas.SimpleItemView.__init__(self, canvas_view, parent_view)
-		self._handle = handle
+from sugar.util import GObjectSingletonMeta
 
-	def do_paint(self, cr, bounds, scale):
-		self._handle.render_cairo(cr)
-		return self.bounds
+class IconCache(gobject.GObject):
+	__metaclass__ = GObjectSingletonMeta
 
-class IconItem(goocanvas.Image):
-	__gproperties__ = {
-		'icon-name': (str, None, None, None, gobject.PARAM_READWRITE),
-		'color': (str, None, None, None, gobject.PARAM_READWRITE)
-	}
+	def __init__(self):
+		gobject.GObject.__init__(self)
+		self._icons = {}
 
-	def __init__(self, **kwargs):
-		goocanvas.Image.__init__(self, **kwargs)
-
-	def do_set_property(self, pspec, value):
-		if pspec.name == 'icon-name':
-			self._icon_name = value
-		elif pspec.name == 'color':
-			self._color = value
-		else:
-			raise AttributeError, 'unknown property %s' % pspec.name
-
-	def do_get_property(self, pspec):
-		if pspec.name == 'icon-name':
-			return self._icon_name
-		if pspec.name == 'color':
-			return self._color
-
-	def create_view(self, canvas_view, parent_view):
-		print 'Create view'
+	def _create_icon(self, name, color, size):
 		theme = gtk.icon_theme_get_default()
-		info = theme.lookup_icon(self._icon_name, 48, 0)
+		info = theme.lookup_icon(name, size, 0)
 		icon_file = open(info.get_filename(), 'r')
 		data = icon_file.read()
 		icon_file.close()
 
-		if self._color != None:
-			style = '.icon-color {fill: %s;}' % self._color
+		if color != None:
+			style = '.icon-color {fill: %s;}' % color
 			data = re.sub('\.icon-color \{.*\}', style, data)
 
-		handle = rsvg.Handle(data=data)
+		loader = gtk.gdk.pixbuf_loader_new_with_mime_type('image/svg-xml')
+		loader.set_size(size, size)
+		loader.write(data)
+		loader.close()
+		
+		return loader.get_pixbuf()
 
-		return IconView(handle, canvas_view, parent_view)
+	def get_icon(self, name, color, size):
+		key = (name, color, size)
+		if self._icons.has_key(key):
+			return self._icons[key]
+		else:
+			icon = self._create_icon(name, color, size)
+			self._icons[key] = icon
+			return icon
+
+class IconItem(goocanvas.Image):
+	def __init__(self, icon_name, color, size, **kwargs):
+		goocanvas.Image.__init__(self, **kwargs)
+
+		icon_cache = IconCache()
+		pixbuf = icon_cache.get_icon(icon_name, color, size)
+		self.set_property('pixbuf', pixbuf)

sugar/util.py

@@ -4,6 +4,20 @@ import random
 import binascii
 import string
 
+import gobject
+
+class GObjectSingletonMeta(gobject.GObjectMeta):
+    """GObject Singleton Metaclass"""
+
+    def __init__(klass, name, bases, dict):
+        gobject.GObjectMeta.__init__(klass, name, bases, dict)
+        klass.__instance = None
+
+    def __call__(klass, *args, **kwargs):
+        if klass.__instance is None:
+            klass.__instance = gobject.GObjectMeta.__call__(klass, *args, **kwargs)
+        return klass.__instance
+
 def _stringify_sha(sha_hash):
 	"""Convert binary sha1 hash data into printable characters."""
 	print_sha = ""