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# 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 hippo
import math
import gobject
from sugar.graphics.canvasicon import CanvasIcon
from sugar.graphics import style
class ActivityIcon(CanvasIcon):
def __init__(self, activity):
icon_name = activity.get_icon_name()
icon_color = activity.get_icon_color()
CanvasIcon.__init__(self, icon_name=icon_name, color=icon_color)
style.apply_stylesheet(self, 'ring.ActivityIcon')
self._activity = activity
self._pulse_id = 0
self._launched = False
self._pulse_id = gobject.timeout_add(200, self._pulse_cb)
def __del__(self):
if self._pulse_id > 0:
gobject.source_remove(self._pulse_id)
def _pulse_cb(self):
pass
def set_launched(self):
if self._launched:
return
self._launched = True
gobject.source_remove(self._pulse_id)
self._pulse_id = 0
def get_launched(self):
return self._launched
def get_activity(self):
return self._activity
class ActivitiesDonut(hippo.CanvasBox, hippo.CanvasItem):
__gtype_name__ = 'SugarActivitiesDonut'
def __init__(self, shell, **kwargs):
hippo.CanvasBox.__init__(self, **kwargs)
self._activities = {}
self._shell = shell
self._model = shell.get_model().get_home()
self._model.connect('activity-launched', self._activity_launched_cb)
self._model.connect('activity-added', self._activity_added_cb)
self._model.connect('activity-removed', self._activity_removed_cb)
def _activity_launched_cb(self, model, activity):
self._add_activity(activity)
def _activity_added_cb(self, model, activity):
# Mark the activity as launched
act_id = activity.get_id()
if not self._activities.has_key(act_id):
return
icon = self._activities[act_id]
icon.set_launched()
def _activity_removed_cb(self, model, activity):
self._remove_activity(activity)
def _remove_activity(self, activity):
act_id = activity.get_id()
if not self._activities.has_key(act_id):
return
icon = self._activities[act_id]
self.remove(icon)
del self._activities[act_id]
def _add_activity(self, activity):
icon = ActivityIcon(activity)
icon.connect('activated', self._activity_icon_clicked_cb)
self.append(icon, hippo.PACK_FIXED)
self._activities[activity.get_id()] = icon
self.emit_paint_needed(0, 0, -1, -1)
def _activity_icon_clicked_cb(self, icon):
activity = icon.get_activity()
if not icon.get_launched():
return
activity_host = self._shell.get_activity(activity.get_id())
if activity_host:
activity_host.present()
def _get_angles(self, index):
angle = 2 * math.pi / 8
return [index * angle, (index + 1) * angle]
def _get_radius(self):
[width, height] = self.get_allocation()
return min(width, height) / 2
def _get_inner_radius(self):
return self._get_radius() * 0.5
def do_paint_below_children(self, cr, damaged_box):
[width, height] = self.get_allocation()
cr.translate(width / 2, height / 2)
radius = self._get_radius()
cr.set_source_rgb(0xf1 / 255.0, 0xf1 / 255.0, 0xf1 / 255.0)
cr.arc(0, 0, radius, 0, 2 * math.pi)
cr.fill()
angle_end = 0
for i in range(0, len(self._activities)):
[angle_start, angle_end] = self._get_angles(i)
cr.new_path()
cr.move_to(0, 0)
cr.line_to(radius * math.cos(angle_start),
radius * math.sin(angle_start))
cr.arc(0, 0, radius, angle_start, angle_end)
cr.line_to(0, 0)
cr.set_source_rgb(0xe2 / 255.0, 0xe2 / 255.0, 0xe2 / 255.0)
cr.set_line_width(4)
cr.stroke_preserve()
cr.set_source_rgb(1, 1, 1)
cr.fill()
cr.set_source_rgb(0xe2 / 255.0, 0xe2 / 255.0, 0xe2 / 255.0)
cr.arc(0, 0, self._get_inner_radius(), 0, 2 * math.pi)
cr.fill()
def do_allocate(self, width, height):
hippo.CanvasBox.do_allocate(self, width, height)
radius = (self._get_inner_radius() + self._get_radius()) / 2
i = 0
for icon in self._activities.values():
[angle_start, angle_end] = self._get_angles(i)
angle = angle_start + (angle_end - angle_start) / 2
[icon_width, icon_height] = icon.get_allocation()
x = int(radius * math.cos(angle)) - icon_width / 2
y = int(radius * math.sin(angle)) - icon_height / 2
self.move(icon, x + width / 2, y + height / 2)
i += 1
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