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-rw-r--r--src/sugar/graphics/tray.py461
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diff --git a/src/sugar/graphics/tray.py b/src/sugar/graphics/tray.py
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-# 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.
-
-"""
-STABLE.
-"""
-
-import gobject
-import gtk
-
-from sugar.graphics import style
-from sugar.graphics.palette import ToolInvoker
-from sugar.graphics.toolbutton import ToolButton
-from sugar.graphics.icon import Icon
-
-_PREVIOUS_PAGE = 0
-_NEXT_PAGE = 1
-
-class _TrayViewport(gtk.Viewport):
- __gproperties__ = {
- 'scrollable' : (bool, None, None, False,
- gobject.PARAM_READABLE),
- 'can-scroll-prev' : (bool, None, None, False,
- gobject.PARAM_READABLE),
- 'can-scroll-next' : (bool, None, None, False,
- gobject.PARAM_READABLE),
- }
-
- def __init__(self, orientation):
- self.orientation = orientation
- self._scrollable = False
- self._can_scroll_next = False
- self._can_scroll_prev = 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)
-
- if self.orientation == gtk.ORIENTATION_HORIZONTAL:
- adj = self.get_hadjustment()
- else:
- adj = self.get_vadjustment()
- adj.connect('changed', self._adjustment_changed_cb)
- adj.connect('value-changed', self._adjustment_changed_cb)
-
- def scroll(self, direction):
- if direction == _PREVIOUS_PAGE:
- self._scroll_previous()
- elif direction == _NEXT_PAGE:
- self._scroll_next()
-
- def scroll_to_item(self, item):
- """This function scrolls the viewport so that item will be visible."""
- assert item in self.traybar.get_children()
-
- # Get the allocation, and make sure that it is visible
- if self.orientation == gtk.ORIENTATION_HORIZONTAL:
- adj = self.get_hadjustment()
- start = item.allocation.x
- stop = item.allocation.x + item.allocation.width
- else:
- adj = self.get_vadjustment()
- start = item.allocation.y
- stop = item.allocation.y + item.allocation.height
-
- if start < adj.value:
- adj.value = start
- elif stop > adj.value + adj.page_size:
- adj.value = stop - adj.page_size
-
- def _scroll_next(self):
- allocation = self.get_allocation()
- if self.orientation == gtk.ORIENTATION_HORIZONTAL:
- adj = self.get_hadjustment()
- new_value = adj.value + allocation.width
- adj.value = min(new_value, adj.upper - allocation.width)
- else:
- adj = self.get_vadjustment()
- new_value = adj.value + allocation.height
- adj.value = min(new_value, adj.upper - allocation.height)
-
- def _scroll_previous(self):
- allocation = self.get_allocation()
- if self.orientation == gtk.ORIENTATION_HORIZONTAL:
- adj = self.get_hadjustment()
- new_value = adj.value - allocation.width
- adj.value = max(adj.lower, new_value)
- else:
- adj = self.get_vadjustment()
- new_value = adj.value - allocation.height
- adj.value = max(adj.lower, new_value)
-
- def do_size_request(self, requisition):
- child_requisition = self.get_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 == 'scrollable':
- return self._scrollable
- elif pspec.name == 'can-scroll-next':
- return self._can_scroll_next
- elif pspec.name == 'can-scroll-prev':
- return self._can_scroll_prev
-
- def _size_allocate_cb(self, viewport, allocation):
- bar_requisition = self.traybar.get_child_requisition()
- if self.orientation == gtk.ORIENTATION_HORIZONTAL:
- scrollable = bar_requisition[0] > allocation.width
- else:
- scrollable = bar_requisition[1] > allocation.height
-
- if scrollable != self._scrollable:
- self._scrollable = scrollable
- self.notify('scrollable')
-
- def _adjustment_changed_cb(self, adjustment):
- if adjustment.value <= adjustment.lower:
- can_scroll_prev = False
- else:
- can_scroll_prev = True
-
- if adjustment.value + adjustment.page_size >= adjustment.upper:
- can_scroll_next = False
- else:
- can_scroll_next = True
-
- if can_scroll_prev != self._can_scroll_prev:
- self._can_scroll_prev = can_scroll_prev
- self.notify('can-scroll-prev')
-
- if can_scroll_next != self._can_scroll_next:
- self._can_scroll_next = can_scroll_next
- self.notify('can-scroll-next')
-
-
-class _TrayScrollButton(ToolButton):
- def __init__(self, icon_name, scroll_direction):
- ToolButton.__init__(self)
- self._viewport = None
-
- self._scroll_direction = scroll_direction
-
- self.set_size_request(style.GRID_CELL_SIZE, style.GRID_CELL_SIZE)
-
- self.icon = Icon(icon_name = icon_name,
- icon_size=gtk.ICON_SIZE_SMALL_TOOLBAR)
- # The alignment is a hack to work around gtk.ToolButton code
- # that sets the icon_size when the icon_widget is a gtk.Image
- alignment = gtk.Alignment(0.5, 0.5)
- alignment.add(self.icon)
- self.set_icon_widget(alignment)
- alignment.show_all()
-
- self.connect('clicked', self._clicked_cb)
-
- def set_viewport(self, viewport):
- self._viewport = viewport
- self._viewport.connect('notify::scrollable',
- self._viewport_scrollable_changed_cb)
-
- if self._scroll_direction == _PREVIOUS_PAGE:
- self._viewport.connect('notify::can-scroll-prev',
- self._viewport_can_scroll_dir_changed_cb)
- self.set_sensitive(self._viewport.props.can_scroll_prev)
- else:
- self._viewport.connect('notify::can-scroll-next',
- self._viewport_can_scroll_dir_changed_cb)
- self.set_sensitive(self._viewport.props.can_scroll_next)
-
-
- def _viewport_scrollable_changed_cb(self, viewport, pspec):
- self.props.visible = self._viewport.props.scrollable
-
- def _viewport_can_scroll_dir_changed_cb(self, viewport, pspec):
- if self._scroll_direction == _PREVIOUS_PAGE:
- sensitive = self._viewport.props.can_scroll_prev
- else:
- sensitive = self._viewport.props.can_scroll_next
-
- self.set_sensitive(sensitive)
-
- def _clicked_cb(self, button):
- self._viewport.scroll(self._scroll_direction)
-
- viewport = property(fset=set_viewport)
-
-ALIGN_TO_START = 0
-ALIGN_TO_END = 1
-
-class HTray(gtk.HBox):
- __gtype_name__ = 'SugarHTray'
-
- __gproperties__ = {
- 'align' : (int, None, None, 0, 1, ALIGN_TO_START,
- gobject.PARAM_READWRITE |
- gobject.PARAM_CONSTRUCT_ONLY),
- 'drag-active' : (bool, None, None, False,
- gobject.PARAM_READWRITE)
- }
- def __init__(self, **kwargs):
- self._drag_active = False
- self.align = ALIGN_TO_START
-
- gobject.GObject.__init__(self, **kwargs)
-
- scroll_left = _TrayScrollButton('go-left', _PREVIOUS_PAGE)
- self.pack_start(scroll_left, False)
-
- self._viewport = _TrayViewport(gtk.ORIENTATION_HORIZONTAL)
- self.pack_start(self._viewport)
- self._viewport.show()
-
- scroll_right = _TrayScrollButton('go-right', _NEXT_PAGE)
- self.pack_start(scroll_right, False)
-
- scroll_left.viewport = self._viewport
- scroll_right.viewport = self._viewport
-
- if self.align == ALIGN_TO_END:
- spacer = gtk.SeparatorToolItem()
- spacer.set_size_request(0, 0)
- spacer.props.draw = False
- spacer.set_expand(True)
- self._viewport.traybar.insert(spacer, 0)
- spacer.show()
-
- def do_set_property(self, pspec, value):
- if pspec.name == 'align':
- self.align = value
- elif pspec.name == 'drag-active':
- self._set_drag_active(value)
- else:
- raise AssertionError
-
- def do_get_property(self, pspec):
- if pspec.name == 'align':
- return self.align
- elif pspec.name == 'drag-active':
- return self._drag_active
- else:
- raise AssertionError
-
- def _set_drag_active(self, active):
- if self._drag_active != active:
- self._drag_active = active
- if self._drag_active:
- self._viewport.traybar.modify_bg(gtk.STATE_NORMAL,
- style.COLOR_BLACK.get_gdk_color())
- else:
- self._viewport.traybar.modify_bg(gtk.STATE_NORMAL, None)
-
- def get_children(self):
- children = self._viewport.traybar.get_children()[:]
- if self.align == ALIGN_TO_END:
- children = children[1:]
- return children
-
- def add_item(self, item, index=-1):
- if self.align == ALIGN_TO_END and index > -1:
- index += 1
- self._viewport.traybar.insert(item, index)
-
- def remove_item(self, item):
- self._viewport.traybar.remove(item)
-
- def get_item_index(self, item):
- index = self._viewport.traybar.get_item_index(item)
- if self.align == ALIGN_TO_END:
- index -= 1
- return index
-
- def scroll_to_item(self, item):
- self._viewport.scroll_to_item(item)
-
-class VTray(gtk.VBox):
- __gtype_name__ = 'SugarVTray'
-
- __gproperties__ = {
- 'align' : (int, None, None, 0, 1, ALIGN_TO_START,
- gobject.PARAM_READWRITE |
- gobject.PARAM_CONSTRUCT_ONLY),
- 'drag-active' : (bool, None, None, False,
- gobject.PARAM_READWRITE)
- }
-
- def __init__(self, **kwargs):
- self._drag_active = False
- self.align = ALIGN_TO_START
-
- gobject.GObject.__init__(self, **kwargs)
-
- scroll_up = _TrayScrollButton('go-up', _PREVIOUS_PAGE)
- self.pack_start(scroll_up, False)
-
- self._viewport = _TrayViewport(gtk.ORIENTATION_VERTICAL)
- self.pack_start(self._viewport)
- self._viewport.show()
-
- scroll_down = _TrayScrollButton('go-down', _NEXT_PAGE)
- self.pack_start(scroll_down, False)
-
- scroll_up.viewport = self._viewport
- scroll_down.viewport = self._viewport
-
- if self.align == ALIGN_TO_END:
- spacer = gtk.SeparatorToolItem()
- spacer.set_size_request(0, 0)
- spacer.props.draw = False
- spacer.set_expand(True)
- self._viewport.traybar.insert(spacer, 0)
- spacer.show()
-
- def do_set_property(self, pspec, value):
- if pspec.name == 'align':
- self.align = value
- elif pspec.name == 'drag-active':
- self._set_drag_active(value)
- else:
- raise AssertionError
-
- def do_get_property(self, pspec):
- if pspec.name == 'align':
- return self.align
- elif pspec.name == 'drag-active':
- return self._drag_active
- else:
- raise AssertionError
-
- def _set_drag_active(self, active):
- if self._drag_active != active:
- self._drag_active = active
- if self._drag_active:
- self._viewport.traybar.modify_bg(gtk.STATE_NORMAL,
- style.COLOR_BLACK.get_gdk_color())
- else:
- self._viewport.traybar.modify_bg(gtk.STATE_NORMAL, None)
-
- def get_children(self):
- children = self._viewport.traybar.get_children()[:]
- if self.align == ALIGN_TO_END:
- children = children[1:]
- return children
-
- def add_item(self, item, index=-1):
- if self.align == ALIGN_TO_END and index > -1:
- index += 1
- self._viewport.traybar.insert(item, index)
-
- def remove_item(self, item):
- self._viewport.traybar.remove(item)
-
- def get_item_index(self, item):
- index = self._viewport.traybar.get_item_index(item)
- if self.align == ALIGN_TO_END:
- index -= 1
- return index
-
- def scroll_to_item(self, item):
- self._viewport.scroll_to_item(item)
-
-class TrayButton(ToolButton):
- def __init__(self, **kwargs):
- ToolButton.__init__(self, **kwargs)
-
-class _IconWidget(gtk.EventBox):
- __gtype_name__ = "SugarTrayIconWidget"
-
- def __init__(self, icon_name=None, xo_color=None):
- gtk.EventBox.__init__(self)
-
- self.set_app_paintable(True)
-
- self._icon = Icon(icon_name=icon_name, xo_color=xo_color,
- icon_size=gtk.ICON_SIZE_LARGE_TOOLBAR)
- self.add(self._icon)
- self._icon.show()
-
- def do_expose_event(self, event):
- palette = self.parent.palette
- if palette and palette.is_up():
- invoker = palette.props.invoker
- invoker.draw_rectangle(event, palette)
-
- gtk.EventBox.do_expose_event(self, event)
-
- def get_icon(self):
- return self._icon
-
-class TrayIcon(gtk.ToolItem):
- __gtype_name__ = "SugarTrayIcon"
-
- def __init__(self, icon_name=None, xo_color=None):
- gtk.ToolItem.__init__(self)
-
- self._icon_widget = _IconWidget(icon_name, xo_color)
- self.add(self._icon_widget)
- self._icon_widget.show()
-
- self._palette_invoker = ToolInvoker(self)
-
- self.set_size_request(style.GRID_CELL_SIZE, style.GRID_CELL_SIZE)
-
- self.connect('destroy', self.__destroy_cb)
-
- def __destroy_cb(self, icon):
- if self._palette_invoker is not None:
- self._palette_invoker.detach()
-
- def create_palette(self):
- return None
-
- def get_palette(self):
- return self._palette_invoker.palette
-
- def set_palette(self, palette):
- self._palette_invoker.palette = palette
-
- palette = gobject.property(
- type=object, setter=set_palette, getter=get_palette)
-
- def get_palette_invoker(self):
- return self._palette_invoker
-
- def set_palette_invoker(self, palette_invoker):
- self._palette_invoker.detach()
- self._palette_invoker = palette_invoker
-
- palette_invoker = gobject.property(
- type=object, setter=set_palette_invoker, getter=get_palette_invoker)
-
- def get_icon(self):
- return self._icon_widget.get_icon()
- icon = property(get_icon, None)
-