/usr/share/pyshared/pgm/graph/group.py is in python-pgm 0.3.12-2build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Pigment Python tools
#
# Copyright © 2006, 2007, 2008 Fluendo Embedded S.L.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
from pgm.utils import classinit
import pgm
import math
import gobject
class Group(gobject.GObject):
__metaclass__ = classinit.GClassInitMeta
__classinit__ = classinit.build_properties
__gsignals__ = {
'drag-begin': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT, gobject.TYPE_UINT)),
'drag-motion': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT, gobject.TYPE_UINT)),
'drag-end': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT)),
'clicked': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT, gobject.TYPE_UINT)),
'pressed': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT, gobject.TYPE_UINT)),
'released': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT)),
'double-clicked': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_BOOLEAN,
(gobject.TYPE_FLOAT, gobject.TYPE_FLOAT, gobject.TYPE_FLOAT,
pgm.ButtonType, gobject.TYPE_UINT)),
}
def __init__(self, canvas=None, layer=pgm.DRAWABLE_MIDDLE):
super(Group, self).__init__()
self._children = []
self._position = (0.0, 0.0, 0.0)
self._opacity = 255
self._screen_visible = False
self._real_visible = False
self._parent = None
self._canvas = canvas
self._layer = layer
def regenerate(self):
for child in self._children:
child.regenerate()
def children__get(self):
return self._children
def position__get(self):
return self._position
def position__set(self, value):
self._position = value
absolute_position = self.absolute_position
for drawable in self._children:
if not isinstance(drawable, Group):
drawable.position_offset = absolute_position
drawable.position = drawable.position
def x__get(self):
return self._position[0]
def x__set(self, value):
self.position = (value, self._position[1], self._position[2])
def y__get(self):
return self._position[1]
def y__set(self, value):
self.position = (self._position[0], value, self._position[2])
def z__get(self):
return self._position[2]
def z__set(self, value):
self.position = (self._position[0], self._position[1], value)
def absolute_position__get(self):
if self._parent == None:
absolute_position = self._position
else:
parent_pos = self._parent.absolute_position
cur_pos = self._position
absolute_position = (cur_pos[0] + parent_pos[0],
cur_pos[1] + parent_pos[1],
cur_pos[2] + parent_pos[2],)
return absolute_position
def opacity__get(self):
return self._opacity
def opacity__set(self, value):
factor = float(value) / 255
self._opacity = value
absolute_opacity_factor = self.absolute_opacity_factor
for drawable in self._children:
if isinstance (drawable, Group):
drawable.opacity = drawable.opacity
else:
drawable.opacity_factor_offset = absolute_opacity_factor
def absolute_opacity_factor__get(self):
if self._parent == None:
opacity_factor = self._opacity / 255.0
else:
opacity_factor = self._opacity * self._parent.absolute_opacity_factor / 255.0
return opacity_factor
def _set_visibility_from_parent(self, visible, from_parent):
if not from_parent:
self._real_visible = visible
if self._parent == None:
self._real_visible = visible
self._screen_visible = visible
elif self._parent.visible == True and self._real_visible == True:
self._screen_visible = True
else:
self._screen_visible = False
for drawable in self._children:
if isinstance(drawable, Group):
drawable._set_visibility_from_parent(self._screen_visible, True)
else:
drawable.parent_visibility = self._screen_visible
def visible__get(self):
return self._screen_visible
def visible__set(self, value):
self._set_visibility_from_parent(value, False)
def size__set(self, size):
current_size = self.size
if current_size[0] == 0.0 or current_size[1] == 0.0:
# FIXME: do something more sensible
return
kx, ky = (size[0]/current_size[0], size[1]/current_size[1])
for child in self._children:
x, y, z = child.position
child.position = (x*kx, y*ky, z)
w, h = child.size
child.size = (w*kx, h*ky)
def width__set(self, width):
height = self.size[1]
self.size = (width, height)
def height__set(self, height):
width = self.size[0]
self.size = (width, height)
def size__get(self):
max_x = 0.0
max_y = 0.0
for child in self._children:
x, y, z = child.position
w, h = child.size
max_x = max(max_x, x + w)
max_y = max(max_y, y + h)
return (max_x, max_y)
def width__get(self):
return self.size[0]
def height__get(self):
return self.size[1]
def parent__get(self):
return self._parent
def add(self, drawable, forward_signals=False):
if drawable not in self._children:
self._children.append(drawable)
if isinstance(drawable, Group):
drawable._parent = self
drawable.position = drawable.position
drawable.opacity = drawable.opacity
drawable.canvas = self._canvas
else:
if self._canvas != None:
self._canvas.add(self._layer, drawable)
drawable.position_offset = self.absolute_position
drawable.parent_visibility = self.visible
drawable.opacity_factor_offset = self.absolute_opacity_factor
if forward_signals:
for signal_name in ('clicked', 'pressed',
'drag-begin', 'drag-motion'):
drawable.connect(signal_name,
self._proxy_child_signal_with_pressure,
signal_name)
for signal_name in ('released', 'drag-end'):
drawable.connect(signal_name,
self._proxy_child_signal, signal_name)
def remove(self, drawable):
if drawable in self._children:
self._children.remove(drawable)
if isinstance(drawable, Group):
drawable._parent = None
drawable.canvas = None
else:
if self._canvas != None:
self._canvas.remove(drawable)
def empty(self):
for child in self._children:
if isinstance(child, Group):
child.empty()
else:
self._canvas.remove(child)
self._children = []
def canvas__set(self, canvas):
for child in self._children:
if isinstance(child, Group):
child.canvas = canvas
else:
if canvas != None:
canvas.add(self._layer, child)
elif self._canvas != None:
self._canvas.remove(child)
self._canvas = canvas
def canvas__get(self):
return self._canvas
def _proxy_child_signal(self, drawable, x, y, z, button, time, signal_name):
return self.emit(signal_name, x, y, z, button, time)
def _proxy_child_signal_with_pressure(self, drawable, x, y, z, button,
time, pressure, signal_name):
return self.emit(signal_name, x, y, z, button, time, pressure)
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