Get the zoom level buttons to work

shell/Shell.py

@@ -19,6 +19,7 @@ from sugar.activity import Activity
 from FirstTimeDialog import FirstTimeDialog
 from panel.PanelManager import PanelManager
 from globalkeys import KeyGrabber
+import sugar
 from sugar import conf
 import sugar.logger
 
@@ -42,11 +43,6 @@ class ShellDbusService(dbus.service.Object):
 		gobject.idle_add(self.__show_console_idle)
 
 class Shell(gobject.GObject):
-	ZOOM_MESH = 0
-	ZOOM_FRIENDS = 1
-	ZOOM_HOME = 2
-	ZOOM_ACTIVITY = 3
-
 	__gsignals__ = {
 		'activity-opened': (gobject.SIGNAL_RUN_FIRST,
 							gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
@@ -86,13 +82,13 @@ class Shell(gobject.GObject):
 
 	def __global_key_pressed_cb(self, grabber, key):
 		if key == 'F1':
-			self.set_zoom_level(Shell.ZOOM_ACTIVITY)
+			self.set_zoom_level(sugar.ZOOM_ACTIVITY)
 		elif key == 'F2':
-			self.set_zoom_level(Shell.ZOOM_HOME)
+			self.set_zoom_level(sugar.ZOOM_HOME)
 		elif key == 'F3':
-			self.set_zoom_level(Shell.ZOOM_FRIENDS)
+			self.set_zoom_level(sugar.ZOOM_FRIENDS)
 		elif key == 'F4':
-			self.set_zoom_level(Shell.ZOOM_MESH)
+			self.set_zoom_level(sugar.ZOOM_MESH)
 
 	def __first_time_dialog_destroy_cb(self, dialog):
 		conf.get_profile().save()
@@ -113,7 +109,7 @@ class Shell(gobject.GObject):
 
 		home_model = HomeModel()
 		self._home_window.set_model(home_model)
-		self.set_zoom_level(Shell.ZOOM_HOME)
+		self.set_zoom_level(sugar.ZOOM_HOME)
 
 		self._panel_manager = PanelManager(self)
 
@@ -122,7 +118,7 @@ class Shell(gobject.GObject):
 
 	def __showing_desktop_changed_cb(self, screen):
 		if not screen.get_showing_desktop():
-			self._zoom_level = Shell.ZOOM_ACTIVITY
+			self._zoom_level = sugar.ZOOM_ACTIVITY
 
 	def __window_opened_cb(self, screen, window):
 		if window.get_window_type() == wnck.WINDOW_NORMAL:
@@ -215,14 +211,14 @@ class Shell(gobject.GObject):
 	def set_zoom_level(self, level):
 		self._zoom_level = level
 
-		if level == Shell.ZOOM_ACTIVITY:
+		if level == sugar.ZOOM_ACTIVITY:
 			self._screen.toggle_showing_desktop(False)
 		else:
 			self._screen.toggle_showing_desktop(True)
 
-		if level == Shell.ZOOM_HOME:
+		if level == sugar.ZOOM_HOME:
 			self._home_window.set_view(HomeWindow.HOME_VIEW)
-		elif level == Shell.ZOOM_FRIENDS:
+		elif level == sugar.ZOOM_FRIENDS:
 			self._home_window.set_view(HomeWindow.FRIENDS_VIEW)
-		elif level == Shell.ZOOM_MESH:
+		elif level == sugar.ZOOM_MESH:
 			self._home_window.set_view(HomeWindow.MESH_VIEW)

shell/panel/TopPanel.py

@@ -2,19 +2,22 @@ import goocanvas
 
 from panel.Panel import Panel
 from sugar.canvas.IconItem import IconItem
+import sugar
 
 class ZoomBar(goocanvas.Group):
-	def __init__(self, height):
+	def __init__(self, shell, height):
 		goocanvas.Group.__init__(self)
 		self._height = height
+		self._shell = shell
 
-		self.add_zoom_level('stock-zoom-activity')
-		self.add_zoom_level('stock-zoom-home')
-		self.add_zoom_level('stock-zoom-friends')
-		self.add_zoom_level('stock-zoom-mesh')
+		self.add_zoom_level(sugar.ZOOM_ACTIVITY, 'stock-zoom-activity')
+		self.add_zoom_level(sugar.ZOOM_HOME, 'stock-zoom-home')
+		self.add_zoom_level(sugar.ZOOM_FRIENDS, 'stock-zoom-friends')
+		self.add_zoom_level(sugar.ZOOM_MESH, 'stock-zoom-mesh')
 
-	def add_zoom_level(self, icon_name):
+	def add_zoom_level(self, level, icon_name):
 		icon = IconItem(icon_name=icon_name, size=self._height)
+		icon.connect('clicked', self.__level_clicked_cb, level)
 
 		icon_size = self._height
 		x = (icon_size + 6) * self.get_n_children()
@@ -22,6 +25,9 @@ class ZoomBar(goocanvas.Group):
 
 		self.add_child(icon)
 
+	def __level_clicked_cb(self, item, level):
+		self._shell.set_zoom_level(level)
+
 class TopPanel(Panel):
 	def __init__(self, shell):
 		Panel.__init__(self)
@@ -30,6 +36,6 @@ class TopPanel(Panel):
 	def construct(self):
 		Panel.construct(self)
 
-		zoom_bar = ZoomBar(self.get_height())
+		zoom_bar = ZoomBar(self._shell, self.get_height())
 		zoom_bar.translate(self.get_border(), self.get_border())
 		self.get_root().add_child(zoom_bar)

sugar/__init__.py

@@ -0,0 +1,4 @@
+ZOOM_MESH = 0
+ZOOM_FRIENDS = 1
+ZOOM_HOME = 2
+ZOOM_ACTIVITY = 3

sugar/canvas/IconItem.py

@@ -50,7 +50,12 @@ class IconCache(gobject.GObject):
 			self._icons[key] = icon
 			return icon
 
-class IconItem(goocanvas.Image):
+class IconItem(goocanvas.Image, goocanvas.Item):
+	__gsignals__ = {
+		'clicked': (gobject.SIGNAL_RUN_FIRST,
+					gobject.TYPE_NONE, ([])),
+	}
+
 	__gproperties__ = {
 		'icon-name': (str, None, None, None,
 					  gobject.PARAM_CONSTRUCT_ONLY |
@@ -64,14 +69,6 @@ class IconItem(goocanvas.Image):
 					  gobject.PARAM_READWRITE)
 	}
 
-	def do_set_property(self, pspec, value):
-		if pspec.name == 'icon-name':
-			self._icon_name = value
-		elif pspec.name == 'color':
-			self._color = value
-		elif pspec.name == 'size':
-			self._size = value
-
 	def __init__(self, **kwargs):
 		goocanvas.Image.__init__(self, **kwargs)
 
@@ -83,3 +80,19 @@ class IconItem(goocanvas.Image):
 			theme = gtk.icon_theme_get_default()
 			pixbuf = theme.load_icon(self._icon_name, self._size, 0)
 			self.props.pixbuf = pixbuf
+
+	def do_set_property(self, pspec, value):
+		if pspec.name == 'icon-name':
+			self._icon_name = value
+		elif pspec.name == 'color':
+			self._color = value
+		elif pspec.name == 'size':
+			self._size = value
+
+	def do_create_view(self, canvas, parent_view):
+		view = goocanvas.Image.do_create_view(self, canvas, parent_view)
+		view.connect('button-press-event', self.__button_press_cb)
+		return view
+
+	def __button_press_cb(self, view, target, event):
+		self.emit('clicked')