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import hippo
import math
from sugar.graphics.canvasicon import CanvasIcon
from sugar.graphics import style
class ActivitiesDonut(hippo.CanvasBox, hippo.CanvasItem):
__gtype_name__ = 'SugarActivitiesDonut'
def __init__(self, shell, **kwargs):
hippo.CanvasBox.__init__(self, **kwargs)
self._activities = {}
shell.connect('activity_opened', self.__activity_opened_cb)
shell.connect('activity_closed', self.__activity_closed_cb)
def __activity_opened_cb(self, model, activity):
self._add_activity(activity)
def __activity_closed_cb(self, model, activity):
self._remove_activity(activity)
def _remove_activity(self, activity):
icon = self._activities[activity.get_id()]
self.remove(icon)
del self._activities[activity.get_id()]
def _add_activity(self, activity):
icon_name = activity.get_icon_name()
icon_color = activity.get_icon_color()
icon = CanvasIcon(icon_name=icon_name, color=icon_color)
style.apply_stylesheet(icon, 'ring.ActivityIcon')
icon.connect('activated', self.__activity_icon_clicked_cb, activity)
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, item, activity):
activity.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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