264 lines
8.9 KiB
Python
264 lines
8.9 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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import gobject
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import colorsys
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from sugar.graphics.canvasicon import CanvasIcon
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from sugar.graphics import units
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from sugar.graphics import xocolor
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from sugar import profile
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# TODO: rgb_to_html and html_to_rgb are useful elsewhere
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# we should put this in a common module
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def rgb_to_html(r, g, b):
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""" (r, g, b) tuple (in float format) -> #RRGGBB """
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return '#%02x%02x%02x' % (int(r * 255), int(g * 255), int(b * 255))
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def html_to_rgb(html_color):
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""" #RRGGBB -> (r, g, b) tuple (in float format) """
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html_color = html_color.strip()
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if html_color[0] == '#':
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html_color = html_color[1:]
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if len(html_color) != 6:
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raise ValueError, "input #%s is not in #RRGGBB format" % html_color
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r, g, b = html_color[:2], html_color[2:4], html_color[4:]
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r, g, b = [int(n, 16) for n in (r, g, b)]
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r, g, b = (r / 255.0, g / 255.0, b / 255.0)
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return (r, g, b)
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class ActivityIcon(CanvasIcon):
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_INTERVAL = 250
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def __init__(self, activity):
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icon_name = activity.get_icon_name()
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self._orig_color = profile.get_color()
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self._icon_colors = self._compute_icon_colors()
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self._direction = 0
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self._level_max = len(self._icon_colors) - 1
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self._level = self._level_max
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color = self._icon_colors[self._level]
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CanvasIcon.__init__(self, icon_name=icon_name, color=color,
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scale=units.MEDIUM_ICON_SCALE, cache=True)
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self._activity = activity
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self._launched = False
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self._pulse_id = gobject.timeout_add(self._INTERVAL, self._pulse_cb)
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def __del__(self):
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self.cleanup()
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def cleanup(self):
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if self._pulse_id > 0:
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gobject.source_remove(self._pulse_id)
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self._pulse_id = 0
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# dispose of all rendered icons from launch feedback
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self._clear_buffers()
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def _compute_icon_colors(self):
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_LEVEL_MAX = 1.6
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_LEVEL_STEP = 0.16
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_LEVEL_MIN = 0.0
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icon_colors = {}
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level = _LEVEL_MIN
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for i in range(0, int(_LEVEL_MAX / _LEVEL_STEP)):
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icon_colors[i] = self._get_icon_color_for_level(level)
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level += _LEVEL_STEP
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return icon_colors
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def _get_icon_color_for_level(self, level):
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factor = math.sin(level)
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h, s, v = colorsys.rgb_to_hsv(*html_to_rgb(self._orig_color.get_fill_color()))
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new_fill = rgb_to_html(*colorsys.hsv_to_rgb(h, s * factor, v))
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h, s, v = colorsys.rgb_to_hsv(*html_to_rgb(self._orig_color.get_stroke_color()))
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new_stroke = rgb_to_html(*colorsys.hsv_to_rgb(h, s * factor, v))
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return xocolor.XoColor("%s,%s" % (new_stroke, new_fill))
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def _pulse_cb(self):
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if self._direction == 1:
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self._level += 1
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if self._level > self._level_max:
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self._direction = 0
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self._level = self._level_max
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elif self._direction == 0:
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self._level -= 1
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if self._level <= 0:
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self._direction = 1
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self._level = 0
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self.props.color = self._icon_colors[self._level]
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self.emit_paint_needed(0, 0, -1, -1)
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return True
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def set_launched(self):
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if self._launched:
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return
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self._launched = True
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self.cleanup()
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self._level = 100.0
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self.props.color = self._orig_color
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self.emit_paint_needed(0, 0, -1, -1)
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def get_launched(self):
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return self._launched
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def get_activity(self):
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return self._activity
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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-launched', self._activity_launched_cb)
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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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self._model.connect('active-activity-changed', self._activity_changed_cb)
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def _activity_launched_cb(self, model, activity):
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self._add_activity(activity)
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def _activity_added_cb(self, model, activity):
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# Mark the activity as launched
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act_id = activity.get_id()
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if not self._activities.has_key(act_id):
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self._add_activity(activity)
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icon = self._activities[act_id]
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icon.set_launched()
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def _activity_removed_cb(self, model, activity):
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self._remove_activity(activity)
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def _activity_changed_cb(self, model, activity):
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self.emit_paint_needed(0, 0, -1, -1)
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def _remove_activity(self, activity):
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act_id = activity.get_id()
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if not self._activities.has_key(act_id):
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return
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icon = self._activities[act_id]
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self.remove(icon)
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icon.cleanup()
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del self._activities[act_id]
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def _add_activity(self, activity):
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icon = ActivityIcon(activity)
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icon.connect('activated', self._activity_icon_clicked_cb)
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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, icon):
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activity = icon.get_activity()
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if not icon.get_launched():
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return
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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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bottom_align = (math.pi - angle) / 2
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return [index * angle + bottom_align,
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(index + 1) * angle + bottom_align]
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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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# Outer Ring
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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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# Selected Wedge
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current_activity = self._model.get_current_activity()
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if current_activity is not None:
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selected_index = self._model.index(current_activity)
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[angle_start, angle_end] = self._get_angles(selected_index)
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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(1, 1, 1)
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cr.fill()
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# Edges
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if len(self._model):
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n_edges = len(self._model) + 1
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else:
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n_edges = 0
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for i in range(0, n_edges):
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cr.new_path()
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cr.move_to(0, 0)
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[angle, unused_angle] = self._get_angles(i)
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cr.line_to(radius * math.cos(angle),
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radius * math.sin(angle))
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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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# Inner Ring
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cr.new_path()
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cr.arc(0, 0, self._get_inner_radius(), 0, 2 * math.pi)
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cr.set_source_rgb(0xe2 / 255.0, 0xe2 / 255.0, 0xe2 / 255.0)
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cr.fill()
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def do_allocate(self, width, height, origin_changed):
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hippo.CanvasBox.do_allocate(self, width, height, origin_changed)
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radius = (self._get_inner_radius() + self._get_radius()) / 2
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i = 0
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for h_activity in self._model:
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icon = self._activities[h_activity.get_id()]
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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.set_position(icon, x + width / 2, y + height / 2)
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i += 1
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