128 lines
4.1 KiB
Python
128 lines
4.1 KiB
Python
# Copyright (C) 2007, One Laptop Per Child
|
|
#
|
|
# 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.
|
|
|
|
import gobject
|
|
import gtk
|
|
|
|
from sugar.graphics import style
|
|
from sugar.graphics.toolbutton import ToolButton
|
|
from sugar.graphics.icon import Icon
|
|
|
|
class _TrayViewport(gtk.Viewport):
|
|
__gproperties__ = {
|
|
'can-scroll' : (bool, None, None, False,
|
|
gobject.PARAM_READABLE),
|
|
}
|
|
|
|
def __init__(self):
|
|
self._can_scroll = False
|
|
|
|
gobject.GObject.__init__(self)
|
|
|
|
self.set_shadow_type(gtk.SHADOW_NONE)
|
|
|
|
self.traybar = gtk.Toolbar()
|
|
self.traybar.set_show_arrow(False)
|
|
self.add(self.traybar)
|
|
self.traybar.show()
|
|
|
|
self.connect('size_allocate', self._size_allocate_cb)
|
|
|
|
def scroll_right(self):
|
|
adj = self.get_hadjustment()
|
|
new_value = adj.value + self.allocation.width
|
|
adj.value = min(new_value, adj.upper - self.allocation.width)
|
|
|
|
def scroll_left(self):
|
|
adj = self.get_hadjustment()
|
|
new_value = adj.value - self.allocation.width
|
|
adj.value = max(adj.lower, new_value)
|
|
|
|
def do_size_request(self, requisition):
|
|
child_requisition = self.child.size_request()
|
|
requisition[0] = 0
|
|
requisition[1] = child_requisition[1]
|
|
|
|
def do_get_property(self, pspec):
|
|
if pspec.name == 'can-scroll':
|
|
return self._can_scroll
|
|
|
|
def _size_allocate_cb(self, viewport, allocation):
|
|
bar_requisition = self.traybar.get_child_requisition()
|
|
if bar_requisition[0] < allocation.width:
|
|
can_scroll = False
|
|
else:
|
|
can_scroll = True
|
|
|
|
if can_scroll != self._can_scroll:
|
|
self._can_scroll = can_scroll
|
|
self.notify('can-scroll')
|
|
|
|
class _TrayScrollButton(gtk.Button):
|
|
def __init__(self, icon_name):
|
|
gobject.GObject.__init__(self)
|
|
|
|
self.set_relief(gtk.RELIEF_NONE)
|
|
self.set_size_request(style.GRID_CELL_SIZE, style.GRID_CELL_SIZE)
|
|
|
|
icon = Icon(icon_name = icon_name,
|
|
icon_size=gtk.ICON_SIZE_SMALL_TOOLBAR)
|
|
self.set_image(icon)
|
|
icon.show()
|
|
|
|
class HTray(gtk.HBox):
|
|
def __init__(self, **kwargs):
|
|
gobject.GObject.__init__(self, **kwargs)
|
|
|
|
self._scroll_left = _TrayScrollButton('go-left')
|
|
self._scroll_left.connect('clicked', self._scroll_left_cb)
|
|
self.pack_start(self._scroll_left, False)
|
|
|
|
self._viewport = _TrayViewport()
|
|
self._viewport.connect('notify::can-scroll',
|
|
self._viewport_can_scroll_changed_cb)
|
|
self.pack_start(self._viewport)
|
|
self._viewport.show()
|
|
|
|
self._scroll_right = _TrayScrollButton('go-right')
|
|
self._scroll_right.connect('clicked', self._scroll_right_cb)
|
|
self.pack_start(self._scroll_right, False)
|
|
|
|
def _viewport_can_scroll_changed_cb(self, viewport, pspec):
|
|
if self._viewport.props.can_scroll:
|
|
self._scroll_left.show()
|
|
self._scroll_right.show()
|
|
|
|
def _scroll_left_cb(self, button):
|
|
self._viewport.scroll_left()
|
|
|
|
def _scroll_right_cb(self, button):
|
|
self._viewport.scroll_right()
|
|
|
|
def add_item(self, item, index=-1):
|
|
self._viewport.traybar.insert(item, index)
|
|
|
|
def remove_item(self, item):
|
|
self._viewport.traybar.remove(item)
|
|
|
|
def get_item_index(self, item):
|
|
return self._viewport.traybar.get_item_index(item)
|
|
|
|
class TrayButton(ToolButton):
|
|
def __init__(self, **kwargs):
|
|
ToolButton.__init__(self, **kwargs)
|