diff options
Diffstat (limited to 'tray.py')
| -rw-r--r-- | tray.py | 202 |
1 files changed, 202 insertions, 0 deletions
@@ -0,0 +1,202 @@ +# 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 +import hippo + +import sugar +from sugar.graphics import style +from sugar.graphics.icon import Icon + +_PREVIOUS_PAGE = 0 +_NEXT_PAGE = 1 + +class _TrayViewport(gtk.Viewport): + __gproperties__ = { + 'can-scroll' : (bool, None, None, False, + gobject.PARAM_READABLE), + } + + def __init__(self, orientation): + self.orientation = orientation + self._can_scroll = False + + gobject.GObject.__init__(self) + + self.set_shadow_type(gtk.SHADOW_NONE) + + self.traybar = gtk.Toolbar() + self.traybar.set_orientation(orientation) + self.traybar.set_show_arrow(False) + self.add(self.traybar) + self.traybar.show() + + self.connect('size_allocate', self._size_allocate_cb) + + def scroll(self, direction): + if direction == _PREVIOUS_PAGE: + self._scroll_previous() + elif direction == _NEXT_PAGE: + self._scroll_next() + + def _scroll_next(self): + if self.orientation == gtk.ORIENTATION_HORIZONTAL: + adj = self.get_hadjustment() + new_value = adj.value + self.allocation.width + adj.value = min(new_value, adj.upper - self.allocation.width) + else: + adj = self.get_vadjustment() + new_value = adj.value + self.allocation.height + adj.value = min(new_value, adj.upper - self.allocation.height) + + def _scroll_to_end(self): + if self.orientation == gtk.ORIENTATION_HORIZONTAL: + adj = self.get_hadjustment() + adj.value = adj.upper# - self.allocation.width + else: + adj = self.get_vadjustment() + adj.value = adj.upper - self.allocation.height + + def _scroll_previous(self): + if self.orientation == gtk.ORIENTATION_HORIZONTAL: + adj = self.get_hadjustment() + new_value = adj.value - self.allocation.width + adj.value = max(adj.lower, new_value) + else: + adj = self.get_vadjustment() + new_value = adj.value - self.allocation.height + adj.value = max(adj.lower, new_value) + + def do_size_request(self, requisition): + child_requisition = self.child.size_request() + if self.orientation == gtk.ORIENTATION_HORIZONTAL: + requisition[0] = 0 + requisition[1] = child_requisition[1] + else: + requisition[0] = child_requisition[0] + requisition[1] = 0 + + 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 self.orientation == gtk.ORIENTATION_HORIZONTAL: + can_scroll = bar_requisition[0] > allocation.width + else: + can_scroll = bar_requisition[1] > allocation.height + + if can_scroll != self._can_scroll: + self._can_scroll = can_scroll + self.notify('can-scroll') + +class _TrayScrollButton(gtk.Button): + def __init__(self, icon_name, scroll_direction): + gobject.GObject.__init__(self) + + self._viewport = None + + self._scroll_direction = scroll_direction + + 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() + + self.connect('clicked', self._clicked_cb) + + def set_viewport(self, viewport): + self._viewport = viewport + self._viewport.connect('notify::can-scroll', + self._viewport_can_scroll_changed_cb) + + def _viewport_can_scroll_changed_cb(self, viewport, pspec): + #self.props.visible = self._viewport.props.can_scroll + self.set_sensitive(self._viewport.props.can_scroll) + + def _clicked_cb(self, button): + self._viewport.scroll(self._scroll_direction) + + viewport = property(fset=set_viewport) + +class HTray(gtk.VBox): + def __init__(self, **kwargs): + gobject.GObject.__init__(self, **kwargs) + + separator = hippo.Canvas() + box = hippo.CanvasBox( + border_color=0xffffffff, + background_color=0xffffffff, + box_height=1, + border_bottom=1) + separator.set_root(box) + self.pack_start(separator, False) + + hbox = gtk.HBox() + self.pack_start(hbox) + + scroll_left = _TrayScrollButton('go-left', _PREVIOUS_PAGE) + scroll_left_event = gtk.EventBox() + scroll_left_event.add(scroll_left) + scroll_left_event.set_size_request(55, -1) + hbox.pack_start(scroll_left_event, False) + + self._viewport = _TrayViewport(gtk.ORIENTATION_HORIZONTAL) + hbox.pack_start(self._viewport) + self._viewport.show() + + scroll_right = _TrayScrollButton('go-right', _NEXT_PAGE) + scroll_right_event = gtk.EventBox() + scroll_right_event.add(scroll_right) + scroll_right_event.set_size_request(55, -1) + hbox.pack_start(scroll_right_event, False) + + scroll_left.set_focus_on_click(False) + scroll_left_event.modify_bg(gtk.STATE_NORMAL, sugar.graphics.style.COLOR_TOOLBAR_GREY.get_gdk_color()) + scroll_left.modify_bg(gtk.STATE_ACTIVE, sugar.graphics.style.COLOR_BUTTON_GREY.get_gdk_color()) + + scroll_right.set_focus_on_click(False) + scroll_right_event.modify_bg(gtk.STATE_NORMAL, sugar.graphics.style.COLOR_TOOLBAR_GREY.get_gdk_color()) + scroll_right.modify_bg(gtk.STATE_ACTIVE, sugar.graphics.style.COLOR_BUTTON_GREY.get_gdk_color()) + + scroll_left.viewport = self._viewport + scroll_right.viewport = self._viewport + + self.connect_after("size-allocate", self._sizeAllocateCb) + + def _sizeAllocateCb(self, widget, event ): + self._viewport.notify('can-scroll') + + def get_children(self): + return self._viewport.traybar.get_children() + + 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) + + def scroll_to_end(self): + self._viewport._scroll_to_end() |