125 lines
4.2 KiB
Python
125 lines
4.2 KiB
Python
# Copyright (C) 2006, Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import hippo
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import math
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from sugar.graphics.canvasicon import CanvasIcon
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from sugar.graphics import style
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class ActivitiesDonut(hippo.CanvasBox, hippo.CanvasItem):
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__gtype_name__ = 'SugarActivitiesDonut'
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def __init__(self, shell, **kwargs):
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hippo.CanvasBox.__init__(self, **kwargs)
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self._activities = {}
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self._shell = shell
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self._model = shell.get_model().get_home()
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self._model.connect('activity-added', self._activity_added_cb)
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self._model.connect('activity-removed', self._activity_removed_cb)
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def _activity_added_cb(self, model, activity):
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self._add_activity(activity)
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def _activity_removed_cb(self, model, activity):
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self._remove_activity(activity)
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def _remove_activity(self, activity):
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icon = self._activities[activity.get_id()]
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self.remove(icon)
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del self._activities[activity.get_id()]
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def _add_activity(self, activity):
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icon_name = activity.get_icon_name()
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icon_color = activity.get_icon_color()
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icon = CanvasIcon(icon_name=icon_name, color=icon_color)
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style.apply_stylesheet(icon, 'ring.ActivityIcon')
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icon.connect('activated', self._activity_icon_clicked_cb, activity)
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self.append(icon, hippo.PACK_FIXED)
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self._activities[activity.get_id()] = icon
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self.emit_paint_needed(0, 0, -1, -1)
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def _activity_icon_clicked_cb(self, item, activity):
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activity_host = self._shell.get_activity(activity.get_id())
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if activity_host:
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activity_host.present()
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def _get_angles(self, index):
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angle = 2 * math.pi / 8
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return [index * angle, (index + 1) * angle]
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def _get_radius(self):
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[width, height] = self.get_allocation()
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return min(width, height) / 2
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def _get_inner_radius(self):
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return self._get_radius() * 0.5
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def do_paint_below_children(self, cr, damaged_box):
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[width, height] = self.get_allocation()
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cr.translate(width / 2, height / 2)
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radius = self._get_radius()
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cr.set_source_rgb(0xf1 / 255.0, 0xf1 / 255.0, 0xf1 / 255.0)
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cr.arc(0, 0, radius, 0, 2 * math.pi)
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cr.fill()
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angle_end = 0
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for i in range(0, len(self._activities)):
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[angle_start, angle_end] = self._get_angles(i)
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cr.new_path()
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cr.move_to(0, 0)
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cr.line_to(radius * math.cos(angle_start),
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radius * math.sin(angle_start))
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cr.arc(0, 0, radius, angle_start, angle_end)
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cr.line_to(0, 0)
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cr.set_source_rgb(0xe2 / 255.0, 0xe2 / 255.0, 0xe2 / 255.0)
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cr.set_line_width(4)
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cr.stroke_preserve()
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cr.set_source_rgb(1, 1, 1)
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cr.fill()
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cr.set_source_rgb(0xe2 / 255.0, 0xe2 / 255.0, 0xe2 / 255.0)
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cr.arc(0, 0, self._get_inner_radius(), 0, 2 * math.pi)
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cr.fill()
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def do_allocate(self, width, height):
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hippo.CanvasBox.do_allocate(self, width, height)
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radius = (self._get_inner_radius() + self._get_radius()) / 2
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i = 0
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for icon in self._activities.values():
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[angle_start, angle_end] = self._get_angles(i)
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angle = angle_start + (angle_end - angle_start) / 2
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[icon_width, icon_height] = icon.get_allocation()
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x = int(radius * math.cos(angle)) - icon_width / 2
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y = int(radius * math.sin(angle)) - icon_height / 2
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self.move(icon, x + width / 2, y + height / 2)
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i += 1
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