/usr/share/pyshared/kiwi/ui/selectablebox.py is in python-kiwi 1.9.22-2.
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# Kiwi: a Framework and Enhanced Widgets for Python
#
# Copyright (C) 2005 Async Open Source
#
# 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 2.1 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
#
# Author(s): Johan Dahlin <jdahlin@async.com.br>
#
"""
A box which you can select and will have a border around it when
you click on any widgets in it
"""
import gtk
from gtk import gdk
class SelectableBox(object):
def __init__(self, width=4):
self._selected = None
self._draw_gc = None
self._selection_width = width
self.unset_flags(gtk.NO_WINDOW)
self.set_redraw_on_allocate(True)
self.set_spacing(width)
self.set_border_width(width)
# Public API
def get_selected(self):
"""
Get the currently selected widget.
@returns: widget
"""
return self._selected
def set_selected(self, widget):
"""
Set the widget to be selected, must be a children of self.
@param widget: widget to select.
"""
if not widget in self.get_children():
raise ValueError("widget must be a child of %r" % self)
old_selected = self._selected
self._selected = widget
if old_selected != widget:
self.queue_draw()
def pack_start(self, child, expand=True, fill=True, padding=0):
"""
Identical to gtk.Box.pack_start
"""
super(SelectableBox, self).pack_start(child, expand=expand,
fill=fill, padding=padding)
self._child_added(child)
def pack_end(self, child, expand=True, fill=True, padding=0):
"""
Identical to gtk.Box.pack_end
"""
super(SelectableBox, self).pack_end(child, expand=expand,
fill=fill, padding=padding)
self._child_added(child)
def add(self, child):
"""
Identical to gtk.Container.add
"""
super(SelectableBox, self).add(child)
self._child_added(child)
def update_selection(self):
selected = self._selected
if not selected:
return
border = self._selection_width
x, y, w, h = selected.allocation
self.window.draw_rectangle(self._draw_gc, False,
x - (border / 2), y - (border / 2),
w + border, h + border)
# GtkWidget
def do_realize(self):
assert not (self.flags() & gtk.NO_WINDOW)
self.set_flags(self.flags() | gtk.REALIZED)
self.window = gdk.Window(self.get_parent_window(),
width=self.allocation.width,
height=self.allocation.height,
window_type=gdk.WINDOW_CHILD,
wclass=gdk.INPUT_OUTPUT,
event_mask=(self.get_events() |
gdk.EXPOSURE_MASK |
gdk.BUTTON_PRESS_MASK))
self.window.set_user_data(self)
self.style.attach(self.window)
self.style.set_background(self.window, gtk.STATE_NORMAL)
self._draw_gc = gdk.GC(self.window,
line_width=self._selection_width,
line_style=gdk.SOLID,
foreground=self.style.bg[gtk.STATE_SELECTED])
def do_button_press_event(self, event):
selected = self._get_child_at_pos(int(event.x), int(event.y))
if selected:
self.set_selected(selected)
# Private
def _get_child_at_pos(self, x, y):
"""
Get child at position x and y.
@param x: x coordinate
@type x: integer
@param y: y coordinate
@type y: integer
"""
toplevel = self.get_toplevel()
for child in self.get_children():
coords = toplevel.translate_coordinates(child, x, y)
if not coords:
continue
child_x, child_y = coords
if (0 <= child_x < child.allocation.width and
0 <= child_y < child.allocation.height and
child.flags() & (gtk.MAPPED | gtk.VISIBLE)):
return child
def _child_added(self, child):
child.connect('button-press-event',
lambda child, e: self.set_selected(child))
class SelectableHBox(SelectableBox, gtk.HBox):
__gtype_name__ = 'SelectableHBox'
def __init__(self, width=4):
gtk.HBox.__init__(self)
SelectableBox.__init__(self, width=width)
do_realize = SelectableBox.do_realize
do_button_press_event = SelectableBox.do_button_press_event
def do_size_allocate(self, allocation):
gtk.HBox.do_size_allocate(self, allocation)
if self.flags() & gtk.REALIZED:
self.window.move_resize(*allocation)
def do_expose_event(self, event):
gtk.HBox.do_expose_event(self, event)
self.update_selection()
class SelectableVBox(SelectableBox, gtk.VBox):
__gtype_name__ = 'SelectableVBox'
def __init__(self, width=4):
gtk.VBox.__init__(self)
SelectableBox.__init__(self, width=width)
do_realize = SelectableBox.do_realize
do_button_press_event = SelectableBox.do_button_press_event
def do_size_allocate(self, allocation):
gtk.VBox.do_size_allocate(self, allocation)
if self.flags() & gtk.REALIZED:
self.window.move_resize(*allocation)
def do_expose_event(self, event):
gtk.VBox.do_expose_event(self, event)
self.update_selection()
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