2007-08-27 21:28:20 +02:00
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# Copyright (C) 2007, One Laptop Per Child
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library 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 GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import gobject
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import gtk
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from sugar.graphics.toolbutton import ToolButton
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from sugar.graphics.icon import Icon
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class _TrayViewport(gtk.Viewport):
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2007-08-27 22:10:18 +02:00
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__gproperties__ = {
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'can-scroll' : (bool, None, None, False,
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gobject.PARAM_READABLE),
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}
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2007-08-27 21:28:20 +02:00
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def __init__(self):
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2007-08-27 22:10:18 +02:00
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self._can_scroll = False
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2007-08-27 21:28:20 +02:00
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gobject.GObject.__init__(self)
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self.set_shadow_type(gtk.SHADOW_NONE)
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self.traybar = gtk.Toolbar()
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self.traybar.set_show_arrow(False)
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self.add(self.traybar)
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self.traybar.show()
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2007-08-27 22:10:18 +02:00
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self.connect('size_allocate', self._size_allocate_cb)
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2007-08-27 21:28:20 +02:00
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def scroll_right(self):
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adj = self.get_hadjustment()
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new_value = adj.value + self.allocation.width
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adj.value = min(new_value, adj.upper - self.allocation.width)
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def scroll_left(self):
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adj = self.get_hadjustment()
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new_value = adj.value - self.allocation.width
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adj.value = max(adj.lower, new_value)
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2007-08-27 22:10:18 +02:00
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def do_get_property(self, pspec):
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if pspec.name == 'can-scroll':
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return self._can_scroll
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def _size_allocate_cb(self, viewport, allocation):
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bar_requisition = self.traybar.get_child_requisition()
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if bar_requisition[0] < allocation.width:
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can_scroll = False
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else:
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can_scroll = True
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if can_scroll != self._can_scroll:
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self._can_scroll = can_scroll
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self.notify('can-scroll')
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2007-08-27 21:28:20 +02:00
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class HTray(gtk.HBox):
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def __init__(self, **kwargs):
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gobject.GObject.__init__(self, **kwargs)
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self._scroll_left = gtk.Button()
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self._scroll_left.set_relief(gtk.RELIEF_NONE)
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self._scroll_left.connect('clicked', self._scroll_left_cb)
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icon = Icon(icon_name='go-left', icon_size=gtk.ICON_SIZE_MENU)
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self._scroll_left.set_image(icon)
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icon.show()
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self.pack_start(self._scroll_left, False)
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self._viewport = _TrayViewport()
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2007-08-27 22:10:18 +02:00
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self._viewport.connect('notify::can-scroll',
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self._viewport_can_scroll_changed_cb)
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2007-08-27 21:28:20 +02:00
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self.pack_start(self._viewport)
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self._viewport.show()
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self._scroll_right = gtk.Button()
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self._scroll_right.set_relief(gtk.RELIEF_NONE)
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self._scroll_right.connect('clicked', self._scroll_right_cb)
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icon = Icon(icon_name='go-right', icon_size=gtk.ICON_SIZE_MENU)
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self._scroll_right.set_image(icon)
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icon.show()
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self.pack_start(self._scroll_right, False)
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2007-08-27 22:10:18 +02:00
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def _viewport_can_scroll_changed_cb(self, viewport, pspec):
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if self._viewport.props.can_scroll:
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self._scroll_left.show()
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self._scroll_right.show()
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2007-08-27 21:28:20 +02:00
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def _scroll_left_cb(self, button):
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self._viewport.scroll_left()
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def _scroll_right_cb(self, button):
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self._viewport.scroll_right()
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def add_item(self, item, index=-1):
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self._viewport.traybar.insert(item, index)
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def remove_item(self, index):
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self._viewport.traybar.remove(item)
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class TrayButton(ToolButton):
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def __init__(self, **kwargs):
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ToolButton.__init__(self, **kwargs)
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