Example #1
0
 def begin_transition(self, active):
     self._active = active
     if active:
         Timer.stop(self)
         self._keyboard.begin_transition(Transition.ACTIVATE)
     else:
         if not config.xid_mode:
             Timer.start(self, config.window.inactive_transparency_delay)
Example #2
0
class LayoutPopup(KeyboardPopup, LayoutView, TouchInput):
    """ Popup showing a (sub-)layout tree. """

    IDLE_CLOSE_DELAY = 0  # seconds of inactivity until window closes

    def __init__(self, keyboard, notify_done_callback):
        self._layout = None
        self._notify_done_callback = notify_done_callback
        self._drag_selected = False # grazed by the pointer?

        KeyboardPopup.__init__(self)
        LayoutView.__init__(self, keyboard)
        TouchInput.__init__(self)

        self.connect("draw",                 self._on_draw)
        self.connect("destroy",              self._on_destroy_event)

        self._close_timer = Timer()
        self.start_close_timer()

    def cleanup(self):
        self.stop_close_timer()

        # fix label popup staying visible on double click
        self.keyboard.hide_touch_feedback()

        LayoutView.cleanup(self)  # deregister from keyboard

    def get_toplevel(self):
        return self

    def set_layout(self, layout, frame_width):
        self._layout = layout
        self._frame_width = frame_width

        self.update_labels()

        # set window size
        layout_canvas_rect = layout.get_canvas_border_rect()
        canvas_rect = layout_canvas_rect.inflate(frame_width)
        w, h = canvas_rect.get_size()
        self.set_default_size(w + 1, h + 1)

    def get_layout(self):
        return self._layout

    def get_frame_width(self):
        return self._frame_width

    def got_motion(self):
        """ Has the pointer ever entered the popup? """
        return self._drag_selected

    def handle_realize_event(self):
        self.get_window().set_override_redirect(True)
        super(LayoutPopup, self).handle_realize_event()

    def _on_destroy_event(self, user_data):
        self.cleanup()

    def on_enter_notify(self, widget, event):
        self.stop_close_timer()

    def on_leave_notify(self, widget, event):
        self.start_close_timer()

    def on_input_sequence_begin(self, sequence):
        self.stop_close_timer()
        key = self.get_key_at_location(sequence.point)
        if key:
            sequence.active_key = key
            self.keyboard.key_down(key, self, sequence)

    def on_input_sequence_update(self, sequence):
        if sequence.state & BUTTON123_MASK:
            key = self.get_key_at_location(sequence.point)

            # drag-select new active key
            active_key = sequence.active_key
            if not active_key is key and \
               (active_key is None or not active_key.activated):
                sequence.active_key = key
                self.keyboard.key_up(active_key, self, sequence, False)
                self.keyboard.key_down(key, self, sequence, False)
                self._drag_selected = True

    def on_input_sequence_end(self, sequence):
        key = sequence.active_key
        if key:
            keyboard = self.keyboard
            keyboard.key_up(key, self, sequence)

        if key and \
           not self._drag_selected:
            Timer(config.UNPRESS_DELAY, self.close_window)
        else:
            self.close_window()

    def _on_draw(self, widget, context):
        decorated = LayoutView.draw(self, widget, context)

    def draw_window_frame(self, context, lod):
        corner_radius = config.CORNER_RADIUS
        border_rgba = self.get_popup_window_rgba("border")
        alpha = border_rgba[3]

        colors = [
                  [[0.5, 0.5, 0.5, alpha], 0  , 1],
                  [border_rgba,            1.5, 2.0],
                 ]

        rect = Rect(0, 0, self.get_allocated_width(),
                          self.get_allocated_height())

        for rgba, pos, width in colors:
            r = rect.deflate(width)
            roundrect_arc(context, r, corner_radius)
            context.set_line_width(width)
            context.set_source_rgba(*rgba)
            context.stroke()

    def close_window(self):
        self._notify_done_callback()

    def start_close_timer(self):
        if self.IDLE_CLOSE_DELAY:
            self._close_timer.start(self.IDLE_CLOSE_DELAY, self.close_window)

    def stop_close_timer(self):
        self._close_timer.stop()
Example #3
0
class WindowRectTracker:
    """
    Keeps track of the window rectangle when moving/resizing.
    Gtk only updates the position and size asynchrounously on
    configure events and hidden windows return invalid values.
    Auto-show et al need valid values from get_position and
    get_size at all times.
    """
    def __init__(self):
        self._window_rect = None
        self._origin = None
        self._screen_orientation = None
        self._save_position_timer = Timer()

        # init detection of screen "rotation"
        screen = self.get_screen()
        screen.connect('size-changed', self._on_screen_size_changed)

    def cleanup(self):
        self._save_position_timer.finish()

    def move(self, x, y):
        """
        Overload Gtk.Window.move to reliably keep track of
        the window position.
        """
        Gtk.Window.move(self, x, y)

    def resize(self, w, h):
        """
        Overload Gtk.Window.size to reliably keep track of
        the window size.
        """
        Gtk.Window.resize(self, w, h)

    def move_resize(self, x, y, w, h):
        win = self.get_window()
        if win:
            win.move_resize(x, y, w, h)

    def get_position(self):
        if self._window_rect is None:
            return Gtk.Window.get_position(self)
        else:
            return self._window_rect.get_position()

    def get_size(self):
        if self._window_rect is None:
            return Gtk.Window.get_size(self)
        else:
            return self._window_rect.get_size()

    def get_origin(self):
        if self._origin is None:
            return self.get_window().get_origin()
        else:
            return self._origin

    def get_rect(self):
        return self._window_rect

    def is_visible(self):
        """ This is overloaded in KbdWindow """
        return Gtk.Window.get_visible(self)

    def _on_screen_size_changed(self, screen):
        """ detect screen rotation (tablets)"""

        # Give the screen time to settle, the window manager 
        # may block the move to previously invalid positions.
        Timer(0.3, self.restore_window_rect)

    def get_screen_orientation(self):
        """
        Current orientation of the screen (tablet rotation).
        Only the aspect ratio is taken into account at this time.
        This appears to cover more cases than loocking at monitor rotation,
        in particular with multi-monitor screens.
        """
        screen = self.get_screen()
        if screen.get_width() >= screen.get_height():
            return Orientation.LANDSCAPE
        else:
            return Orientation.PORTRAIT

    def update_window_rect(self):
        """
        Call this on configure event, the only time when
        get_position, get_size, etc. can be trusted.
        """
        visible = self.is_visible()
        if visible:
            self._window_rect = Rect.from_position_size(Gtk.Window.get_position(self),
                                                        Gtk.Window.get_size(self))
            self._origin      = self.get_window().get_origin()
            self._screen_orientation = self.get_screen_orientation()

    def restore_window_rect(self, startup = False):
        """
        Restore window size and position.
        """
        # Run pending save operations now, so they don't
        # interfere with the window rect after it was restored.
        self._save_position_timer.finish()

        orientation = self.get_screen_orientation()
        rect = self.read_window_rect(orientation)

        self._screen_orientation = orientation
        self._window_rect = rect
        _logger.debug("restore_window_rect {rect}, {orientation}" \
                      .format(rect = rect, orientation = orientation))

        # Give the derived class a chance to modify the rect,
        # for example to correct the position for auto-show.
        rect = self.on_restore_window_rect(rect)

        # move/resize the window
        if startup:
            # gnome-shell doesn't take kindly to an initial move_resize().
            # The window ends up at (0, 0) on startup and goes back there
            # repeatedly when hiding and unhiding.
            self.set_default_size(rect.w, rect.h)
            self.move(rect.x, rect.y)
        else:
            self.move_resize(rect.x, rect.y, rect.w, rect.h)

    def on_restore_window_rect(self, rect):
        return rect

    def save_window_rect(self, orientation = None, rect = None):
        """
        Save window size and position.
        """
        if orientation is None:
            orientation = self._screen_orientation
        if rect is None:
            rect = self._window_rect

        # Give the derived class a chance to modify the rect,
        # for example to override it for auto-show.
        rect = self.on_save_window_rect(rect)

        self.write_window_rect(orientation, rect)

        _logger.debug("save_window_rect {rect}, {orientation}" \
                      .format(rect = rect, orientation = orientation))

    def on_save_window_rect(self, rect):
        return rect

    def read_window_rect(self, orientation, rect):
        """
        Read orientation dependent rect.
        Overload this in derived classes.
        """
        raise NotImplementedError()

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload this in derived classes.
        """
        raise NotImplementedError()

    def start_save_position_timer(self):
        """
        Trigger saving position and size to gsettings
        Delay this a few seconds to avoid excessive disk writes.

        Remember the current rect and rotation as the screen may have been
        rotated when the saving happens.
        """
        self._save_position_timer.start(5, self.save_window_rect,
                                           self.get_screen_orientation(),
                                           self.get_rect())

    def stop_save_position_timer(self):
        self._save_position_timer.stop()
Example #4
0
class IconPalette(Gtk.Window, WindowRectTracker, WindowManipulator):
    """
    Class that creates a movable and resizable floating window without
    decorations. The window shows the icon of onboard scaled to fit to the
    window and a resize grip that honors the desktop theme in use.

    Onboard offers an option to the user to make the window appear
    whenever the user hides the onscreen keyboard. The user can then
    click on the window to hide it and make the onscreen keyboard
    reappear.
    """

    __gsignals__ = {str("activated"): (GObject.SIGNAL_RUN_LAST, GObject.TYPE_NONE, ())}

    """ Minimum size of the IconPalette """
    MINIMUM_SIZE = 20

    _layout_view = None

    def __init__(self):

        self._visible = False
        self._force_to_top = False
        self._last_pos = None

        self._dwell_progress = DwellProgress()
        self._dwell_begin_timer = None
        self._dwell_timer = None
        self._no_more_dwelling = False

        Gtk.Window.__init__(
            self,
            type_hint=self._get_window_type_hint(),
            skip_taskbar_hint=True,
            skip_pager_hint=True,
            has_resize_grip=False,
            urgency_hint=False,
            decorated=False,
            accept_focus=False,
            opacity=0.75,
            width_request=self.MINIMUM_SIZE,
            height_request=self.MINIMUM_SIZE,
        )

        WindowRectTracker.__init__(self)
        WindowManipulator.__init__(self)

        self.set_keep_above(True)

        # use transparency if available
        visual = Gdk.Screen.get_default().get_rgba_visual()
        if visual:
            self.set_visual(visual)

        # set up event handling
        self.add_events(
            Gdk.EventMask.BUTTON_PRESS_MASK | Gdk.EventMask.BUTTON_RELEASE_MASK | Gdk.EventMask.POINTER_MOTION_MASK
        )

        self.connect("button-press-event", self._on_button_press_event)
        self.connect("motion-notify-event", self._on_motion_notify_event)
        self.connect("button-release-event", self._on_button_release_event)
        self.connect("draw", self._on_draw)
        self.connect("configure-event", self._on_configure_event)
        self.connect("realize", self._on_realize_event)
        self.connect("unrealize", self._on_unrealize_event)
        self.connect("enter-notify-event", self._on_mouse_enter)
        self.connect("leave-notify-event", self._on_mouse_leave)

        # default coordinates of the iconpalette on the screen
        self.set_min_window_size(self.MINIMUM_SIZE, self.MINIMUM_SIZE)
        # self.set_default_size(1, 1)  # no flashing on left screen edge in unity
        self.restore_window_rect()

        # Realize the window. Test changes to this in all supported
        # environments. It's all too easy to have the icp not show up reliably.
        self.update_window_options()
        self.hide()

        once = CallOnce(100).enqueue  # call at most once per 100ms
        rect_changed = lambda x: once(self._on_config_rect_changed)
        config.icp.position_notify_add(rect_changed)
        config.icp.size_notify_add(rect_changed)

        config.icp.resize_handles_notify_add(lambda x: self.update_resize_handles())

        self.update_sticky_state()
        self.update_resize_handles()

    def cleanup(self):
        WindowRectTracker.cleanup(self)

    def set_layout_view(self, view):
        self._layout_view = view
        self.queue_draw()

    def get_color_scheme(self):
        if self._layout_view:
            return self._layout_view.get_color_scheme()
        return None

    def _on_configure_event(self, widget, event):
        self.update_window_rect()

    def on_drag_initiated(self):
        self.stop_save_position_timer()
        self._stop_dwelling()

    def on_drag_done(self):
        self.update_window_rect()
        self.start_save_position_timer()
        self._no_more_dwelling = True

    def _on_realize_event(self, user_data):
        """ Gdk window created """
        set_unity_property(self)
        if config.is_force_to_top():
            self.get_window().set_override_redirect(True)
        self.restore_window_rect(True)

    def _on_unrealize_event(self, user_data):
        """ Gdk window destroyed """
        self.set_type_hint(self._get_window_type_hint())

    def _get_window_type_hint(self):
        if config.is_force_to_top():
            return Gdk.WindowTypeHint.NORMAL
        else:
            return Gdk.WindowTypeHint.UTILITY

    def update_window_options(self, startup=False):
        if not config.xid_mode:  # not when embedding

            # (re-)create the gdk window?
            force_to_top = config.is_force_to_top()

            if self._force_to_top != force_to_top:
                self._force_to_top = force_to_top

                visible = self._visible  # visible before?

                if self.get_realized():  # not starting up?
                    self.hide()
                    self.unrealize()

                self.realize()

                if visible:
                    self.show()

    def update_sticky_state(self):
        if not config.xid_mode:
            if config.get_sticky_state():
                self.stick()
            else:
                self.unstick()

    def update_resize_handles(self):
        """ Tell WindowManipulator about the active resize handles """
        self.set_drag_handles(config.icp.resize_handles)

    def get_drag_threshold(self):
        """ Overload for WindowManipulator """
        return config.get_drag_threshold()

    def _on_button_press_event(self, widget, event):
        """
        Save the pointer position.
        """
        if event.button == 1 and event.window == self.get_window():
            self.enable_drag_protection(True)
            sequence = InputSequence()
            sequence.init_from_button_event(event)
            self.handle_press(sequence, move_on_background=True)
            if self.is_moving():
                self.reset_drag_protection()  # force threshold
        return False

    def _on_motion_notify_event(self, widget, event):
        """
        Move the window if the pointer has moved more than the DND threshold.
        """
        sequence = InputSequence()
        sequence.init_from_motion_event(event)
        self.handle_motion(sequence, fallback=True)
        self.set_drag_cursor_at((event.x, event.y))

        # start dwelling if nothing else is going on
        point = (event.x, event.y)
        hit = self.hit_test_move_resize(point)
        if hit is None:
            if (
                not self.is_drag_initiated()
                and not self._is_dwelling()
                and not self._no_more_dwelling
                and not config.is_hover_click_active()
                and not config.lockdown.disable_dwell_activation
            ):
                self._start_dwelling()
        else:
            self._stop_dwelling()  # allow resizing in peace

        return False

    def _on_button_release_event(self, widget, event):
        """
        Save the window geometry, hide the IconPalette and
        emit the "activated" signal.
        """
        result = False

        if event.button == 1 and event.window == self.get_window() and not self.is_drag_active():
            self.emit("activated")
            result = True

        self.stop_drag()
        self.set_drag_cursor_at((event.x, event.y))

        return result

    def _on_mouse_enter(self, widget, event):
        pass

    def _on_mouse_leave(self, widget, event):
        self._stop_dwelling()
        self._no_more_dwelling = False

    def _on_draw(self, widget, cr):
        """
        Draw the onboard icon.
        """
        if not Gtk.cairo_should_draw_window(cr, self.get_window()):
            return False

        rect = Rect(0.0, 0.0, float(self.get_allocated_width()), float(self.get_allocated_height()))
        color_scheme = self.get_color_scheme()

        # clear background
        cr.save()
        cr.set_operator(cairo.OPERATOR_CLEAR)
        cr.paint()
        cr.restore()

        # draw background color
        background_rgba = list(color_scheme.get_icon_rgba("background"))

        if Gdk.Screen.get_default().is_composited():
            background_rgba[3] *= 0.75
            cr.set_source_rgba(*background_rgba)

            corner_radius = min(rect.w, rect.h) * 0.1

            roundrect_arc(cr, rect, corner_radius)
            cr.fill()

            # decoration frame
            line_rect = rect.deflate(2)
            cr.set_line_width(2)
            roundrect_arc(cr, line_rect, corner_radius)
            cr.stroke()
        else:
            cr.set_source_rgba(*background_rgba)
            cr.paint()

        # draw themed icon
        self._draw_themed_icon(cr, rect, color_scheme)

        # draw dwell progress
        rgba = [0.8, 0.0, 0.0, 0.5]
        bg_rgba = [0.1, 0.1, 0.1, 0.5]
        if color_scheme:
            key = RectKey("icon0")  # take dwell color from the first icon "key"
            rgba = color_scheme.get_key_rgba(key, "dwell-progress")
            rgba[3] = min(0.75, rgba[3])  # more transparency

            key = RectKey("icon1")
            bg_rgba = color_scheme.get_key_rgba(key, "fill")
            bg_rgba[3] = min(0.75, rgba[3])  # more transparency

        dwell_rect = rect.grow(0.5)
        self._dwell_progress.draw(cr, dwell_rect, rgba, bg_rgba)

        return True

    def _draw_themed_icon(self, cr, icon_rect, color_scheme):
        """ draw themed icon """
        keys = [RectKey("icon" + str(i)) for i in range(4)]

        # Default colors for the case when none of the icon keys
        # are defined in the color scheme.
        background_rgba = [1.0, 1.0, 1.0, 1.0]
        fill_rgbas = [[0.9, 0.7, 0.0, 0.75], [1.0, 1.0, 1.0, 1.0], [1.0, 1.0, 1.0, 1.0], [0.0, 0.54, 1.0, 1.0]]
        stroke_rgba = [0.0, 0.0, 0.0, 1.0]
        label_rgba = [0.0, 0.0, 0.0, 1.0]

        themed = False
        if color_scheme:
            if any(color_scheme.is_key_in_scheme(key) for key in keys):
                themed = True

        # four rounded rectangles
        rects = Rect(0.0, 0.0, 100.0, 100.0).deflate(5).subdivide(2, 2, 6)
        cr.save()
        cr.scale(icon_rect.w / 100.0, icon_rect.h / 100.0)
        cr.translate(icon_rect.x, icon_rect.y)
        cr.select_font_face("sans-serif")
        cr.set_line_width(2)

        for i, key in enumerate(keys):
            rect = rects[i]

            if themed:
                fill_rgba = color_scheme.get_key_rgba(key, "fill")
                stroke_rgba = color_scheme.get_key_rgba(key, "stroke")
                label_rgba = color_scheme.get_key_rgba(key, "label")
            else:
                fill_rgba = fill_rgbas[i]

            roundrect_arc(cr, rect, 5)
            cr.set_source_rgba(*fill_rgba)
            cr.fill_preserve()

            cr.set_source_rgba(*stroke_rgba)
            cr.stroke()

            if i == 0 or i == 3:
                if i == 0:
                    letter = "O"
                else:
                    letter = "B"

                cr.set_font_size(25)
                x_bearing, y_bearing, _width, _height, x_advance, y_advance = cr.text_extents(letter)
                r = rect.align_rect(Rect(0, 0, _width, _height), 0.3, 0.33)
                cr.move_to(r.x - x_bearing, r.y - y_bearing)
                cr.set_source_rgba(*label_rgba)
                cr.show_text(letter)
                cr.new_path()

        cr.restore()

    def show(self):
        """
        Override Gtk.Widget.hide() to save the window geometry.
        """
        Gtk.Window.show(self)
        self.move_resize(*self.get_rect())  # sync with WindowRectTracker
        self._visible = True

    def hide(self):
        """
        Override Gtk.Widget.hide() to save the window geometry.
        """
        Gtk.Window.hide(self)
        self._visible = False

    def _on_config_rect_changed(self):
        """ Gsettings position or size changed """
        orientation = self.get_screen_orientation()
        rect = self.read_window_rect(orientation)
        if self.get_rect() != rect:
            self.restore_window_rect()

    def read_window_rect(self, orientation):
        """
        Read orientation dependent rect.
        Overload for WindowRectTracker.
        """
        if orientation == Orientation.LANDSCAPE:
            co = config.icp.landscape
        else:
            co = config.icp.portrait
        rect = Rect(co.x, co.y, co.width, co.height)
        return rect

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload for WindowRectTracker.
        """
        # There are separate rects for normal and rotated screen (tablets).
        if orientation == Orientation.LANDSCAPE:
            co = config.icp.landscape
        else:
            co = config.icp.portrait

        co.settings.delay()
        co.x, co.y, co.width, co.height = rect
        co.settings.apply()

    def _is_dwelling(self):
        return bool(self._dwell_begin_timer) and (
            self._dwell_begin_timer.is_running() or self._dwell_progress.is_dwelling()
        )

    def _start_dwelling(self):
        self._stop_dwelling()
        self._dwell_begin_timer = Timer(1.5, self._on_dwell_begin_timer)
        self._no_more_dwelling = True

    def _stop_dwelling(self):
        if self._dwell_begin_timer:
            self._dwell_begin_timer.stop()
            if self._dwell_timer:
                self._dwell_timer.stop()
                self._dwell_progress.stop_dwelling()
                self.queue_draw()

    def _on_dwell_begin_timer(self):
        self._dwell_progress.start_dwelling()
        self._dwell_timer = Timer(0.025, self._on_dwell_timer)
        return False

    def _on_dwell_timer(self):
        self._dwell_progress.opacity, done = Fade.sin_fade(self._dwell_progress.dwell_start_time, 0.3, 0, 1.0)
        self.queue_draw()
        if self._dwell_progress.is_done():
            if not self.is_drag_active():
                self.emit("activated")
                self.stop_drag()
            return False
        return True
Example #5
0
class KeyboardGTK(Gtk.DrawingArea, WindowManipulator):

    def __init__(self):
        Gtk.DrawingArea.__init__(self)
        WindowManipulator.__init__(self)

        self.active_key = None

        self._active_event_type = None
        self._last_click_time = 0
        self._last_click_key = None

        self._outside_click_timer = Timer()
        self._outside_click_detected = False
        self._outside_click_start_time = None

        self._long_press_timer = Timer()
        self._auto_release_timer = AutoReleaseTimer(self)

        self.dwell_timer = None
        self.dwell_key = None
        self.last_dwelled_key = None

        self._window_fade = FadeTimer()
        self._last_transition = None
        self.inactivity_timer = InactivityTimer(self)
        self.auto_show = AtspiAutoShow(self)
        self.auto_show.enable(config.is_auto_show_enabled())

        self.touch_handles = TouchHandles()
        self.touch_handles_hide_timer = Timer()
        self.touch_handles_fade = FadeTimer()
        self.touch_handles_auto_hide = True

        self._aspect_ratio = None
        self._first_draw = True

        # self.set_double_buffered(False)
        self.set_app_paintable(True)

        # no tooltips when embedding, gnome-screen-saver flickers (Oneiric)
        if not config.xid_mode:
            self.set_has_tooltip(True) # works only at window creation -> always on

        self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK
                        | Gdk.EventMask.BUTTON_RELEASE_MASK
                        | Gdk.EventMask.POINTER_MOTION_MASK
                        | Gdk.EventMask.LEAVE_NOTIFY_MASK
                        | Gdk.EventMask.ENTER_NOTIFY_MASK
                        )

        self.connect("parent-set",           self._on_parent_set)
        self.connect("draw",                 self._on_draw)
        self.connect("button-press-event",   self._on_mouse_button_press)
        self.connect("button_release_event", self._on_mouse_button_release)
        self.connect("motion-notify-event",  self._on_motion)
        self.connect("query-tooltip",        self._on_query_tooltip)
        self.connect("enter-notify-event",   self._on_mouse_enter)
        self.connect("leave-notify-event",   self._on_mouse_leave)
        self.connect("configure-event",      self._on_configure_event)

        self.update_resize_handles()

        self.show()

    def initial_update(self):
        pass

    def _on_parent_set(self, widget, old_parent):
        win = self.get_kbd_window()
        if win:
            self.touch_handles.set_window(win)

    def cleanup(self):
        # stop timer callbacks for unused, but not yet destructed keyboards
        self.touch_handles_fade.stop()
        self.touch_handles_hide_timer.stop()
        self._window_fade.stop()
        self.inactivity_timer.stop()
        self._long_press_timer.stop()
        self._auto_release_timer.stop()
        self.auto_show.cleanup()
        self.stop_click_polling()

    def set_startup_visibility(self):
        win = self.get_kbd_window()
        assert(win)

        # Show the keyboard when turning off auto-show.
        # Hide the keyboard when turning on auto-show.
        #   (Fix this when we know how to get the active accessible)
        # Hide the keyboard on start when start-minimized is set.
        # Start with active transparency if the inactivity_timer is enabled.
        #
        # start_minimized            False True  False True
        # auto_show                  False False True  True
        # --------------------------------------------------
        # window visible on start    True  False False False
        # window visible later       True  True  False False

        if config.xid_mode:
            win.set_visible(True) # simply show the window
        else:
            # determine the initial transition
            if config.is_auto_show_enabled():
                transition = Transition.AUTO_HIDE
            else:
                if config.is_visible_on_start():
                    if self.inactivity_timer.is_enabled():
                        transition = Transition.ACTIVATE
                    else:
                        transition = Transition.SHOW
                else:
                    transition = Transition.HIDE

            # transition to initial opacity
            if win.supports_alpha:
                win.set_opacity(0.0) # fade in from full transparency
            self.begin_transition(transition, 0.2)

            # kick off inactivity timer, i.e. DEACTIVATE on timeout
            if transition == Transition.ACTIVATE:
                self.inactivity_timer.begin_transition(False)

            # Be sure to show/hide window and icon palette
            if transition in [Transition.SHOW,
                              Transition.AUTO_SHOW,
                              Transition.ACTIVATE]:
                win.set_visible(True)
            else:
                win.set_visible(False)

    def update_resize_handles(self):
        """ Tell WindowManipulator about the active resize handles """
        self.set_drag_handles(config.window.resize_handles)

    def update_auto_show(self):
        """
        Turn on/off auto-show and show/hide the window accordingly.
        """
        enable = config.is_auto_show_enabled()
        self.auto_show.enable(enable)
        self.auto_show.set_visible(not enable)

    def update_transparency(self):
        self.begin_transition(Transition.ACTIVATE)
        if self.inactivity_timer.is_enabled():
            self.inactivity_timer.begin_transition(False)
        else:
            self.inactivity_timer.stop()
        self.redraw() # for background transparency

    def update_inactive_transparency(self):
        if self.inactivity_timer.is_enabled():
            self.begin_transition(Transition.DEACTIVATE)

    def get_transition_target_opacity(self, transition):
        transparency = 0

        if transition in [Transition.ACTIVATE]:
            transparency = config.window.transparency

        elif transition in [Transition.SHOW,
                            Transition.AUTO_SHOW]:
            if not self.inactivity_timer.is_enabled() or \
               self.inactivity_timer.is_active():
                transparency = config.window.transparency
            else:
                transparency = config.window.inactive_transparency

        elif transition in [Transition.HIDE,
                            Transition.AUTO_HIDE]:
            transparency = 100

        elif transition == Transition.DEACTIVATE:
            transparency = config.window.inactive_transparency

        return 1.0 - transparency / 100.0

    def begin_transition(self, transition, duration = None):
        """ Start the transition to a different opacity """


        window = self.get_kbd_window()
        if window:
            _duration = 0.3
            if transition in [Transition.SHOW,
                              Transition.HIDE,
                              Transition.AUTO_HIDE,
                              Transition.AUTO_SHOW,
                              Transition.ACTIVATE]:
                _duration = 0.15
            if duration is None:
                duration = _duration


            if transition in [Transition.SHOW,
                              Transition.AUTO_SHOW]:
                if not window.is_visible():
                    window.set_visible(True)

            start_opacity  = window.get_opacity()
            target_opacity = self.get_transition_target_opacity(transition)
            _logger.debug("begin opacity transition: {} to {}" \
                           .format(start_opacity, target_opacity))

            # no fade delay for screens that can't fade (unity-2d)
            # Don't fade again when the target opacity has already
            # been reached.
            screen = window.get_screen()
            if screen and not screen.is_composited() or \
               self._last_transition == transition and \
               start_opacity == target_opacity:

                if transition in [Transition.HIDE,
                                  Transition.AUTO_HIDE]:
                    window.set_visible(False)
            else:
                self._last_transition = transition
                self._window_fade.fade_to(start_opacity, target_opacity, duration,
                                         self._on_opacity_step, transition)

    def _on_opacity_step(self, opacity, done, transition):
        window = self.get_kbd_window()
        if window:
            window.set_opacity(opacity)
            if done:
                if transition in [Transition.HIDE,
                                  Transition.AUTO_HIDE]:
                    window.set_visible(False)

    def toggle_visible(self):
        """ main method to show/hide onboard manually"""
        window = self.get_kbd_window()
        visible = not window.is_visible() if window else False
        self.set_user_visible(visible)

    def set_user_visible(self, visible):
        """ main method to show/hide onboard manually"""
        self.lock_auto_show_visible(visible)
        self.set_visible(visible)

    def set_visible(self, visible):
        """ Start show/hide transition. """
        window = self.get_kbd_window()
        if window:
            if visible:
                self.begin_transition(Transition.SHOW)
            else:
                self.begin_transition(Transition.HIDE)

    def lock_auto_show_visible(self, visible):
        """
        If the user unhides onboard, don't auto-hide it until
        he manually hides it again.
        """
        if config.is_auto_show_enabled():
            self.auto_show.lock_visible(visible)

    def start_click_polling(self):
        if self.has_latched_sticky_keys():
            self._outside_click_timer.start(0.01, self._on_click_timer)
            self._outside_click_detected = False
            self._outside_click_start_time = time.time()

    def stop_click_polling(self):
        self._outside_click_timer.stop()

    def _on_click_timer(self):
        """ poll for mouse click outside of onboards window """
        rootwin = Gdk.get_default_root_window()
        dunno, x, y, mask = rootwin.get_pointer()
        if mask & (Gdk.ModifierType.BUTTON1_MASK |
                   Gdk.ModifierType.BUTTON2_MASK |
                   Gdk.ModifierType.BUTTON3_MASK):
            self._outside_click_detected = True
        elif self._outside_click_detected:
            # button released anywhere outside of onboards control
            self.stop_click_polling()
            self.on_outside_click()
            return False

        # stop after 30 seconds
        if time.time() - self._outside_click_start_time > 30.0:
            self.stop_click_polling()
            self.on_cancel_outside_click()
            return False

        return True

    def get_drag_window(self):
        """ Overload for WindowManipulator """
        return self.get_kbd_window()

    def get_drag_threshold(self):
        """ Overload for WindowManipulator """
        return config.get_drag_threshold()

    def on_drag_initiated(self):
        """ Overload for WindowManipulator """
        window = self.get_drag_window()
        if window:
            window.on_user_positioning_begin()

    def on_drag_done(self):
        """ Overload for WindowManipulator """
        window = self.get_drag_window()
        if window:
            window.on_user_positioning_done()

    def get_always_visible_rect(self):
        """
        Returns the bounding rectangle of all move buttons
        in canvas coordinates.
        Overload for WindowManipulator
        """
        keys = self.find_keys_from_ids(["move"])
        bounds = None
        for key in keys:
            r = key.get_canvas_border_rect()
            if not bounds:
                bounds = r
            else:
                bounds = bounds.union(r)

        return bounds

    def _on_configure_event(self, widget, user_data):
        self.update_layout()
        self.update_font_sizes()
        self.touch_handles.update_positions(self.canvas_rect)

    def _on_mouse_enter(self, widget, event):
        # ignore event if a mouse button is held down
        # we get the event once the button is released
        if event.state & (Gdk.ModifierType.BUTTON1_MASK |
                          Gdk.ModifierType.BUTTON2_MASK |
                          Gdk.ModifierType.BUTTON3_MASK):
            return

        # stop inactivity timer
        if self.inactivity_timer.is_enabled():
            self.inactivity_timer.begin_transition(True)

        # stop click polling
        self.stop_click_polling()

        # Force into view for WindowManipulator's system drag mode.
        #if not config.xid_mode and \
        #   not config.window.window_decoration and \
        #   not config.window.force_to_top:
        #    GObject.idle_add(self.force_into_view)

    def _on_mouse_leave(self, widget, event):
        # ignore event if a mouse button is held down
        # we get the event once the button is released
        if event.state & (Gdk.ModifierType.BUTTON1_MASK |
                          Gdk.ModifierType.BUTTON2_MASK |
                          Gdk.ModifierType.BUTTON3_MASK):
            return

        # start a timer to detect clicks outside of onboard
        self.start_click_polling()

        # start inactivity timer
        if self.inactivity_timer.is_enabled():
            self.inactivity_timer.begin_transition(False)

        self.stop_dwelling()
        self.reset_touch_handles()

    def _on_motion(self, widget, event):
        point = (event.x, event.y)
        hit_key = None

        # hit-test touch handles first
        hit_handle = None
        if self.touch_handles.active:
            hit_handle = self.touch_handles.hit_test(point)
            self.touch_handles.set_prelight(hit_handle)

        # hit-test keys
        if hit_handle is None:
            hit_key = self.get_key_at_location(point)

        if event.state & (Gdk.ModifierType.BUTTON1_MASK |
                          Gdk.ModifierType.BUTTON2_MASK |
                          Gdk.ModifierType.BUTTON3_MASK):

            # move/resize
            self.handle_motion(event, fallback = True)

            # stop long press when drag threshold has been overcome
            if self.is_drag_active():
                self.stop_long_press()

        else:
            if not hit_handle is None:
                # handle hovered over -> extend its visible time
                self.start_touch_handles_auto_show()

            # start dwelling if we have entered a dwell-enabled key
            if hit_key and \
               hit_key.sensitive and \
               not self.is_dwelling() and \
               not self.already_dwelled(hit_key) and \
               not config.scanner.enabled:

                controller = self.button_controllers.get(hit_key)
                if controller and controller.can_dwell():
                    self.start_dwelling(hit_key)

            self.do_set_cursor_at(point, hit_key)

        # cancel dwelling when the hit key changes
        if self.dwell_key and self.dwell_key != hit_key or \
           self.last_dwelled_key and self.last_dwelled_key != hit_key:
            self.cancel_dwelling()

    def do_set_cursor_at(self, point, hit_key = None):
        """ Set/reset the cursor for frame resize handles """
        if not config.xid_mode:

            allow_drag_cursors = not config.has_window_decoration() and \
                                 not hit_key
            self.set_drag_cursor_at(point, allow_drag_cursors)

    def _on_mouse_button_press(self, widget, event):
        self.stop_click_polling()
        self.stop_dwelling()

        key = None
        point = (event.x, event.y)

        if event.type == Gdk.EventType.BUTTON_PRESS:
            # hit-test touch handles first
            hit_handle = None
            if self.touch_handles.active:
                hit_handle = self.touch_handles.hit_test(point)
                self.touch_handles.set_pressed(hit_handle)
                if not hit_handle is None:
                    # handle clicked -> stop auto-show until button release
                    self.stop_touch_handles_auto_show()
                else:
                    # no handle clicked -> hide them now
                    self.show_touch_handles(False)

            # hit-test keys
            if hit_handle is None:
                key = self.get_key_at_location(point)

            # enable/disable the drag threshold
            if not hit_handle is None:
                self.enable_drag_protection(False)
            elif key and key.id == "move":
                # Move key needs to support long press;
                # always use the drag threshold.
                self.enable_drag_protection(True)
                self.reset_drag_protection()
            else:
                self.enable_drag_protection(config.drag_protection)

            # handle resizing
            if not key and \
               not config.has_window_decoration() and \
               not config.xid_mode:
                if self.handle_press(event):
                    return True

            # bail if we are in scanning mode
            if config.scanner.enabled:
                return True

            # press the key
            self.active_key = key
            if key:
                double_click_time = Gtk.Settings.get_default() \
                        .get_property("gtk-double-click-time")

                # single click?
                if self._last_click_key != key or \
                   event.time - self._last_click_time > double_click_time:
                    self.press_key(key, event.button)

                    # start long press detection
                    controller = self.button_controllers.get(key)
                    if controller and controller.can_long_press():
                        self._long_press_timer.start(1.0, self._on_long_press,
                                                    key, event.button)
                # double click?
                else:
                    self.press_key(key, event.button, EventType.DOUBLE_CLICK)

                self._last_click_key = key
                self._last_click_time = event.time

        return True

    def _on_long_press(self, key, button):
        controller = self.button_controllers.get(key)
        controller.long_press(button)

    def stop_long_press(self):
        self._long_press_timer.stop()

    def _on_mouse_button_release(self, widget, event):
        if not config.scanner.enabled:
            self.release_active_key()
        self.stop_drag()
        self._long_press_timer.stop()

        # reset cursor when there was no cursor motion
        point = (event.x, event.y)
        hit_key = self.get_key_at_location(point)
        self.do_set_cursor_at(point, hit_key)

        # reset touch handles
        self.reset_touch_handles()
        self.start_touch_handles_auto_show()

    def press_key(self, key, button = 1, event_type = EventType.CLICK):
        Keyboard.press_key(self, key, button, event_type)
        self._auto_release_timer.start()
        self._active_event_type = event_type

    def release_key(self, key, button = 1, event_type = None):
        if event_type is None:
            event_type = self._active_event_type
        Keyboard.release_key(self, key, button, event_type)
        self._active_event_type = None

    def is_dwelling(self):
        return not self.dwell_key is None

    def already_dwelled(self, key):
        return self.last_dwelled_key is key

    def start_dwelling(self, key):
        self.cancel_dwelling()
        self.dwell_key = key
        self.last_dwelled_key = key
        key.start_dwelling()
        self.dwell_timer = GObject.timeout_add(50, self._on_dwell_timer)

    def cancel_dwelling(self):
        self.stop_dwelling()
        self.last_dwelled_key = None

    def stop_dwelling(self):
        if self.dwell_timer:
            GObject.source_remove(self.dwell_timer)
            self.dwell_timer = None
            self.redraw([self.dwell_key])
            self.dwell_key.stop_dwelling()
            self.dwell_key = None

    def _on_dwell_timer(self):
        if self.dwell_key:
            self.redraw([self.dwell_key])

            if self.dwell_key.is_done():
                key = self.dwell_key
                self.stop_dwelling()

                self.press_key(key, 0, EventType.DWELL)
                self.release_key(key, 0, EventType.DWELL)

                return False
        return True

    def release_active_key(self):
        if self.active_key:
            self.release_key(self.active_key)
            self.active_key = None
        return True

    def _on_query_tooltip(self, widget, x, y, keyboard_mode, tooltip):
        if config.show_tooltips and \
           not self.is_drag_initiated():
            key = self.get_key_at_location((x, y))
            if key:
                if key.tooltip:
                    r = Gdk.Rectangle()
                    r.x, r.y, r.width, r.height = key.get_canvas_rect()
                    tooltip.set_tip_area(r)   # no effect in oneiric?
                    tooltip.set_text(_(key.tooltip))
                    return True
        return False

    def _on_draw(self, widget, context):
        #_logger.debug("Draw: clip_extents=" + str(context.clip_extents()))
        #self.get_window().set_debug_updates(True)

        if not Gtk.cairo_should_draw_window(context, self.get_window()):
            return

        clip_rect = Rect.from_extents(*context.clip_extents())

        # draw background
        decorated = self.draw_background(context)

        # On first run quickly overwrite the background only.
        # This gives a slightly smoother startup with desktop remnants
        # flashing though for a shorter time.
        if self._first_draw:
            self._first_draw = False
            self.queue_draw()
            return

        if not self.layout:
            return

        # run through all visible layout items
        layer_ids = self.layout.get_layer_ids()
        for item in self.layout.iter_visible_items():
            if item.layer_id:

                # draw layer background
                layer_index = layer_ids.index(item.layer_id)
                parent = item.parent
                if parent and \
                   layer_index != 0:
                    rect = parent.get_canvas_rect()
                    context.rectangle(*rect.inflate(1))

                    if self.color_scheme:
                        rgba = self.color_scheme.get_layer_fill_rgba(layer_index)
                    else:
                        rgba = [0.5, 0.5, 0.5, 0.9]
                    context.set_source_rgba(*rgba)

                    context.fill()

                    self.draw_dish_key_background(context, 1.0, item.layer_id)

            # draw key
            if item.is_key() and \
               clip_rect.intersects(item.get_canvas_rect()):
                item.draw(context)
                item.draw_image(context)
                item.draw_label(context)

        # draw touch handles (enlarged move and resize handles)
        if self.touch_handles.active:
            corner_radius = config.CORNER_RADIUS if decorated else 0
            self.touch_handles.set_corner_radius(corner_radius)
            self.touch_handles.draw(context)

    def show_touch_handles(self, show, auto_hide = True):
        """
        Show/hide the enlarged resize/move handels.
        Initiates an opacity fade.
        """
        if show and config.lockdown.disable_touch_handles:
            return

        if show:
            self.touch_handles.set_prelight(None)
            self.touch_handles.set_pressed(None)
            self.touch_handles.active = True
            self.touch_handles_auto_hide = auto_hide
            start, end = 0.0, 1.0
        else:
            self.stop_touch_handles_auto_show()
            start, end = 1.0, 0.0

        if self.touch_handles_fade.target_value != end:
            self.touch_handles_fade.time_step = 0.025
            self.touch_handles_fade.fade_to(start, end, 0.2,
                                      self._on_touch_handles_opacity)

    def reset_touch_handles(self):
        if self.touch_handles.active:
            self.touch_handles.set_prelight(None)
            self.touch_handles.set_pressed(None)

    def start_touch_handles_auto_show(self):
        """ (re-) starts the timer to hide touch handles """
        if self.touch_handles.active and self.touch_handles_auto_hide:
            self.touch_handles_hide_timer.start(3.5,
                                                self.show_touch_handles, False)

    def stop_touch_handles_auto_show(self):
        """ stops the timer to hide touch handles """
        self.touch_handles_hide_timer.stop()

    def _on_touch_handles_opacity(self, opacity, done):
        if done and opacity < 0.1:
            self.touch_handles.active = False

        self.touch_handles.opacity = opacity

        # Convoluted workaround for a weird cairo glitch (Precise).
        # When queuing all handles for drawing, the background only
        # under the move handle is clipped and remains transparent.
        # -> Fade with double frequency and queue some handles
        # for drawing only every other time.
        if 0:
            self.touch_handles.redraw()
        else:
            for handle in self.touch_handles.handles:
                if bool(self.touch_handles_fade.iteration & 1) != \
                   (handle.id in [Handle.MOVE, Handle.NORTH, Handle.SOUTH]):
                    handle.redraw()

            if done:
                GObject.idle_add(self._on_touch_handles_opacity, 1.0, False)


    def hit_test_move_resize(self, point):
        hit = self.touch_handles.hit_test(point)
        if hit is None:
            hit = WindowManipulator.hit_test_move_resize(self, point)
        return hit

    def draw_background(self, context):
        """ Draw keyboard background """
        win = self.get_kbd_window()

        decorated = False

        if config.xid_mode:
            # xembed mode
            # Disable transparency in lightdm and g-s-s for now.
            # There are too many issues and there is no real
            # visual improvement.
            if False and \
               win.supports_alpha:
                self.clear_background(context)
                decorated = True
                self.draw_transparent_background(context, decorated)
            else:
                self.draw_plain_background(context)

        elif config.has_window_decoration():
            # decorated window
            if win.supports_alpha and \
               config.window.transparent_background:
                self.clear_background(context)
            else:
                self.draw_plain_background(context)

        else:
            # undecorated window
            if win.supports_alpha:
                self.clear_background(context)
                if not config.window.transparent_background:
                    decorated = True
                    self.draw_transparent_background(context, decorated)
            else:
                self.draw_plain_background(context)

        return decorated

    def clear_background(self, context):
        """
        Clear the whole gtk background.
        Makes the whole strut transparent in xembed mode.
        """
        context.save()
        context.set_operator(cairo.OPERATOR_CLEAR)
        context.paint()
        context.restore()

    def get_layer_fill_rgba(self, layer_index):
        if self.color_scheme:
            return self.color_scheme.get_layer_fill_rgba(layer_index)
        else:
            return [0.5, 0.5, 0.5, 1.0]

    def get_background_rgba(self):
        """ layer 0 color * background_transparency """
        layer0_rgba = self.get_layer_fill_rgba(0)
        background_alpha = 1.0 - config.window.background_transparency / 100.0
        background_alpha *= layer0_rgba[3]
        return layer0_rgba[:3] + [background_alpha]

    def draw_transparent_background(self, context, decorated = True):
        """ fill with the transparent background color """
        rgba = self.get_background_rgba()
        context.set_source_rgba(*rgba)

        # draw on the potentially aspect-corrected frame around the layout
        rect = self.layout.get_canvas_border_rect()
        rect = rect.inflate(config.get_frame_width())
        corner_radius = config.CORNER_RADIUS

        if decorated:
            roundrect_arc(context, rect, corner_radius)
        else:
            context.rectangle(*rect)
        context.fill()

        if decorated:
            # inner decoration line
            line_rect = rect.deflate(1)
            roundrect_arc(context, line_rect, corner_radius)
            context.stroke()

        self.draw_dish_key_background(context, rgba[3])

    def draw_plain_background(self, context, layer_index = 0):
        """ fill with plain layer 0 color; no alpha support required """
        rgba = self.get_layer_fill_rgba(layer_index)
        context.set_source_rgba(*rgba)
        context.paint()

        self.draw_dish_key_background(context)

    def draw_dish_key_background(self, context, alpha = 1.0, layer_id = None):
        """
        Black background following the contours of key clusters
        to simulate the opening in the keyboard plane.
        """
        if config.theme_settings.key_style == "dish":
            context.push_group()

            context.set_source_rgba(0, 0, 0, 1)
            enlargement = self.layout.context.scale_log_to_canvas((0.8, 0.8))
            corner_radius = self.layout.context.scale_log_to_canvas_x(2.4)

            if layer_id is None:
                generator = self.layout.iter_visible_items()
            else:
                generator = self.layout.iter_layer_items(layer_id)

            for item in generator:
                if item.is_key():
                    rect = item.get_canvas_fullsize_rect()
                    rect = rect.inflate(*enlargement)
                    roundrect_curve(context, rect, corner_radius)
                    context.fill()

            context.pop_group_to_source()
            context.paint_with_alpha(alpha);

    def _on_mods_changed(self):
        _logger.info("Modifiers have been changed")
        self.update_font_sizes()

    def redraw(self, keys = None):
        """
        Queue redrawing for individual keys or the whole keyboard.
        """
        if keys:
            area = None
            for key in keys:
                rect = key.context.log_to_canvas_rect(key.get_border_rect())
                area = area.union(rect) if area else rect
            area = area.inflate(2.0) # account for stroke width, anti-aliasing
            self.queue_draw_area(*area)
        else:
            self.queue_draw()

    def update_font_sizes(self):
        """
        Cycles through each group of keys and set each key's
        label font size to the maximum possible for that group.
        """
        context = self.create_pango_context()
        for keys in list(self.layout.get_key_groups().values()):

            max_size = 0
            for key in keys:
                key.configure_label(self.mods)
                best_size = key.get_best_font_size(context)
                if best_size:
                    if not max_size or best_size < max_size:
                        max_size = best_size

            for key in keys:
                key.font_size = max_size

    def emit_quit_onboard(self, data=None):
        _logger.debug("Entered emit_quit_onboard")
        self.get_kbd_window().emit("quit-onboard")

    def get_kbd_window(self):
        return self.get_parent()

    def get_click_type_button_rects(self):
        """
        Returns bounding rectangles of all click type buttons
        in root window coordinates.
        """
        keys = self.find_keys_from_ids(["singleclick",
                                        "secondaryclick",
                                        "middleclick",
                                        "doubleclick",
                                        "dragclick"])
        rects = []
        for key in keys:
            r = key.get_canvas_border_rect()
            x0, y0 = self.get_window().get_root_coords(r.x, r.y)
            x1, y1 = self.get_window().get_root_coords(r.x + r.w,
                                                       r.y + r.h)
            rects.append((x0, y0, x1 - x0, y1 -y0))

        return rects

    def on_layout_updated(self):
        # experimental support for keeping window aspect ratio
        # Currently, in Oneiric, neither lightdm, nor gnome-screen-saver
        # appear to honor these hints.

        aspect_ratio = None
        if config.is_keep_aspect_ratio_enabled():
            log_rect = self.layout.get_border_rect()
            aspect_ratio = log_rect.w / float(log_rect.h)
            aspect_ratio = self.layout.get_log_aspect_ratio()

        if self._aspect_ratio != aspect_ratio:
            window = self.get_kbd_window()
            if window:
                geom = Gdk.Geometry()
                if aspect_ratio is None:
                    window.set_geometry_hints(self, geom, 0)
                else:
                    geom.min_aspect = geom.max_aspect = aspect_ratio
                    window.set_geometry_hints(self, geom, Gdk.WindowHints.ASPECT)

                self._aspect_ratio = aspect_ratio

    def refresh_pango_layouts(self):
        """
        When the systems font dpi setting changes our pango layout object,
        it still caches the old setting, leading to wrong font scaling.
        Refresh the pango layout object.
        """
        _logger.info(_("Refreshing pango layout, new font dpi setting is '{}'") \
                .format(Gtk.Settings.get_default().get_property("gtk-xft-dpi")))

        Key.reset_pango_layout()
class IconPalette(WindowRectPersist, WindowManipulator, Gtk.Window):
    """
    Class that creates a movable and resizable floating window without
    decorations. The window shows the icon of onboard scaled to fit to the
    window and a resize grip that honors the desktop theme in use.

    Onboard offers an option to the user to make the window appear
    whenever the user hides the onscreen keyboard. The user can then
    click on the window to hide it and make the onscreen keyboard
    reappear.
    """

    __gsignals__ = {
        str('activated'): (GObject.SIGNAL_RUN_LAST, GObject.TYPE_NONE, ())
    }
    """ Minimum size of the IconPalette """
    MINIMUM_SIZE = 20

    _layout_view = None

    def __init__(self):

        self._visible = False
        self._force_to_top = False
        self._last_pos = None

        self._dwell_progress = DwellProgress()
        self._dwell_begin_timer = None
        self._dwell_timer = None
        self._no_more_dwelling = False

        Gtk.Window.__init__(self,
                            type_hint=self._get_window_type_hint(),
                            skip_taskbar_hint=True,
                            skip_pager_hint=True,
                            has_resize_grip=False,
                            urgency_hint=False,
                            decorated=False,
                            accept_focus=False,
                            opacity=0.75,
                            width_request=self.MINIMUM_SIZE,
                            height_request=self.MINIMUM_SIZE)

        WindowRectPersist.__init__(self)
        WindowManipulator.__init__(self)

        self.set_keep_above(True)

        # use transparency if available
        visual = Gdk.Screen.get_default().get_rgba_visual()
        if visual:
            self.set_visual(visual)

        # set up event handling
        self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK
                        | Gdk.EventMask.BUTTON_RELEASE_MASK
                        | Gdk.EventMask.POINTER_MOTION_MASK)

        self.connect("button-press-event", self._on_button_press_event)
        self.connect("motion-notify-event", self._on_motion_notify_event)
        self.connect("button-release-event", self._on_button_release_event)
        self.connect("draw", self._on_draw)
        self.connect("configure-event", self._on_configure_event)
        self.connect("realize", self._on_realize_event)
        self.connect("unrealize", self._on_unrealize_event)
        self.connect("enter-notify-event", self._on_mouse_enter)
        self.connect("leave-notify-event", self._on_mouse_leave)

        # default coordinates of the iconpalette on the screen
        self.set_min_window_size(self.MINIMUM_SIZE, self.MINIMUM_SIZE)
        #self.set_default_size(1, 1)  # no flashing on left screen edge in unity
        self.restore_window_rect()

        # Realize the window. Test changes to this in all supported
        # environments. It's all too easy to have the icp not show up reliably.
        self.update_window_options()
        self.hide()

        once = CallOnce(100).enqueue  # call at most once per 100ms
        rect_changed = lambda x: once(self._on_config_rect_changed)
        config.icp.position_notify_add(rect_changed)
        config.icp.size_notify_add(rect_changed)

        config.icp.resize_handles_notify_add(
            lambda x: self.update_resize_handles())

        self.update_sticky_state()
        self.update_resize_handles()

    def cleanup(self):
        WindowRectPersist.cleanup(self)

    def set_layout_view(self, view):
        self._layout_view = view
        self.queue_draw()

    def get_color_scheme(self):
        if self._layout_view:
            return self._layout_view.get_color_scheme()
        return None

    def _on_configure_event(self, widget, event):
        self.update_window_rect()

    def on_drag_initiated(self):
        self.stop_save_position_timer()
        self._stop_dwelling()

    def on_drag_done(self):
        self.update_window_rect()
        self.start_save_position_timer()
        self._no_more_dwelling = True

    def _on_realize_event(self, user_data):
        """ Gdk window created """
        set_unity_property(self)
        if config.is_force_to_top():
            self.set_override_redirect(True)
        self.restore_window_rect(True)

    def _on_unrealize_event(self, user_data):
        """ Gdk window destroyed """
        self.set_type_hint(self._get_window_type_hint())

    def _get_window_type_hint(self):
        if config.is_force_to_top():
            return Gdk.WindowTypeHint.NORMAL
        else:
            return Gdk.WindowTypeHint.UTILITY

    def update_window_options(self, startup=False):
        if not config.xid_mode:  # not when embedding

            # (re-)create the gdk window?
            force_to_top = config.is_force_to_top()

            if self._force_to_top != force_to_top:
                self._force_to_top = force_to_top

                visible = self._visible  # visible before?

                if self.get_realized():  # not starting up?
                    self.hide()
                    self.unrealize()

                self.realize()

                if visible:
                    self.show()

    def update_sticky_state(self):
        if not config.xid_mode:
            if config.get_sticky_state():
                self.stick()
            else:
                self.unstick()

    def update_resize_handles(self):
        """ Tell WindowManipulator about the active resize handles """
        self.set_drag_handles(config.icp.resize_handles)

    def get_drag_threshold(self):
        """ Overload for WindowManipulator """
        return config.get_drag_threshold()

    def _on_button_press_event(self, widget, event):
        """
        Save the pointer position.
        """
        if event.button == 1 and event.window == self.get_window():
            self.enable_drag_protection(True)
            sequence = InputSequence()
            sequence.init_from_button_event(event)
            self.handle_press(sequence, move_on_background=True)
            if self.is_moving():
                self.reset_drag_protection()  # force threshold
        return False

    def _on_motion_notify_event(self, widget, event):
        """
        Move the window if the pointer has moved more than the DND threshold.
        """
        sequence = InputSequence()
        sequence.init_from_motion_event(event)
        self.handle_motion(sequence, fallback=True)
        self.set_drag_cursor_at((event.x, event.y))

        # start dwelling if nothing else is going on
        point = (event.x, event.y)
        hit = self.hit_test_move_resize(point)
        if hit is None:
            if not self.is_drag_initiated() and \
               not self._is_dwelling() and \
               not self._no_more_dwelling and \
               not config.is_hover_click_active() and \
               not config.lockdown.disable_dwell_activation:
                self._start_dwelling()
        else:
            self._stop_dwelling()  # allow resizing in peace

        return False

    def _on_button_release_event(self, widget, event):
        """
        Save the window geometry, hide the IconPalette and
        emit the "activated" signal.
        """
        result = False

        if event.button == 1 and \
           event.window == self.get_window() and \
           not self.is_drag_active():
            self.emit("activated")
            result = True

        self.stop_drag()
        self.set_drag_cursor_at((event.x, event.y))

        return result

    def _on_mouse_enter(self, widget, event):
        pass

    def _on_mouse_leave(self, widget, event):
        self._stop_dwelling()
        self._no_more_dwelling = False

    def _on_draw(self, widget, cr):
        """
        Draw the onboard icon.
        """
        if not Gtk.cairo_should_draw_window(cr, self.get_window()):
            return False

        rect = Rect(0.0, 0.0, float(self.get_allocated_width()),
                    float(self.get_allocated_height()))
        color_scheme = self.get_color_scheme()

        # clear background
        cr.save()
        cr.set_operator(cairo.OPERATOR_CLEAR)
        cr.paint()
        cr.restore()

        # draw background color
        background_rgba = list(color_scheme.get_icon_rgba("background"))

        if Gdk.Screen.get_default().is_composited():
            background_rgba[3] *= 0.75
            cr.set_source_rgba(*background_rgba)

            corner_radius = min(rect.w, rect.h) * 0.1

            roundrect_arc(cr, rect, corner_radius)
            cr.fill()

            # decoration frame
            line_rect = rect.deflate(2)
            cr.set_line_width(2)
            roundrect_arc(cr, line_rect, corner_radius)
            cr.stroke()
        else:
            cr.set_source_rgba(*background_rgba)
            cr.paint()

        # draw themed icon
        self._draw_themed_icon(cr, rect, color_scheme)

        # draw dwell progress
        rgba = [0.8, 0.0, 0.0, 0.5]
        bg_rgba = [0.1, 0.1, 0.1, 0.5]
        if color_scheme:
            key = RectKey(
                "icon0")  # take dwell color from the first icon "key"
            rgba = color_scheme.get_key_rgba(key, "dwell-progress")
            rgba[3] = min(0.75, rgba[3])  # more transparency

            key = RectKey("icon1")
            bg_rgba = color_scheme.get_key_rgba(key, "fill")
            bg_rgba[3] = min(0.75, rgba[3])  # more transparency

        dwell_rect = rect.grow(0.5)
        self._dwell_progress.draw(cr, dwell_rect, rgba, bg_rgba)

        return True

    def _draw_themed_icon(self, cr, icon_rect, color_scheme):
        """ draw themed icon """
        keys = [RectKey("icon" + str(i)) for i in range(4)]

        # Default colors for the case when none of the icon keys
        # are defined in the color scheme.
        background_rgba = [1.0, 1.0, 1.0, 1.0]
        fill_rgbas = [[0.9, 0.7, 0.0, 0.75], [1.0, 1.0, 1.0, 1.0],
                      [1.0, 1.0, 1.0, 1.0], [0.0, 0.54, 1.0, 1.0]]
        stroke_rgba = [0.0, 0.0, 0.0, 1.0]
        label_rgba = [0.0, 0.0, 0.0, 1.0]

        themed = False
        if color_scheme:
            if any(color_scheme.is_key_in_scheme(key) for key in keys):
                themed = True

        # four rounded rectangles
        rects = Rect(0.0, 0.0, 100.0, 100.0).deflate(5) \
                                            .subdivide(2, 2, 6)
        cr.save()
        cr.scale(icon_rect.w / 100., icon_rect.h / 100.0)
        cr.translate(icon_rect.x, icon_rect.y)
        cr.select_font_face("sans-serif")
        cr.set_line_width(2)

        for i, key in enumerate(keys):
            rect = rects[i]

            if themed:
                fill_rgba = color_scheme.get_key_rgba(key, "fill")
                stroke_rgba = color_scheme.get_key_rgba(key, "stroke")
                label_rgba = color_scheme.get_key_rgba(key, "label")
            else:
                fill_rgba = fill_rgbas[i]

            roundrect_arc(cr, rect, 5)
            cr.set_source_rgba(*fill_rgba)
            cr.fill_preserve()

            cr.set_source_rgba(*stroke_rgba)
            cr.stroke()

            if i == 0 or i == 3:
                if i == 0:
                    letter = "O"
                else:
                    letter = "B"

                cr.set_font_size(25)
                x_bearing, y_bearing, _width, _height, \
                x_advance, y_advance = cr.text_extents(letter)
                r = rect.align_rect(Rect(0, 0, _width, _height), 0.3, 0.33)
                cr.move_to(r.x - x_bearing, r.y - y_bearing)
                cr.set_source_rgba(*label_rgba)
                cr.show_text(letter)
                cr.new_path()

        cr.restore()

    def show(self):
        """
        Override Gtk.Widget.hide() to save the window geometry.
        """
        Gtk.Window.show(self)
        self.move_resize(*self.get_rect())  # sync with WindowRectTracker
        self._visible = True

    def hide(self):
        """
        Override Gtk.Widget.hide() to save the window geometry.
        """
        Gtk.Window.hide(self)
        self._visible = False

    def _on_config_rect_changed(self):
        """ Gsettings position or size changed """
        orientation = self.get_screen_orientation()
        rect = self.read_window_rect(orientation)
        if self.get_rect() != rect:
            self.restore_window_rect()

    def read_window_rect(self, orientation):
        """
        Read orientation dependent rect.
        Overload for WindowRectPersist.
        """
        if orientation == Orientation.LANDSCAPE:
            co = config.icp.landscape
        else:
            co = config.icp.portrait
        rect = Rect(co.x, co.y, co.width, co.height)
        return rect

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload for WindowRectPersist.
        """
        # There are separate rects for normal and rotated screen (tablets).
        if orientation == Orientation.LANDSCAPE:
            co = config.icp.landscape
        else:
            co = config.icp.portrait

        co.delay()
        co.x, co.y, co.width, co.height = rect
        co.apply()

    def _is_dwelling(self):
        return bool(self._dwell_begin_timer) and \
               (self._dwell_begin_timer.is_running() or \
               self._dwell_progress.is_dwelling())

    def _start_dwelling(self):
        self._stop_dwelling()
        self._dwell_begin_timer = Timer(1.5, self._on_dwell_begin_timer)
        self._no_more_dwelling = True

    def _stop_dwelling(self):
        if self._dwell_begin_timer:
            self._dwell_begin_timer.stop()
            if self._dwell_timer:
                self._dwell_timer.stop()
                self._dwell_progress.stop_dwelling()
                self.queue_draw()

    def _on_dwell_begin_timer(self):
        self._dwell_progress.start_dwelling()
        self._dwell_timer = Timer(0.025, self._on_dwell_timer)
        return False

    def _on_dwell_timer(self):
        self._dwell_progress.opacity, done = \
            Fade.sin_fade(self._dwell_progress.dwell_start_time, 0.3, 0, 1.0)
        self.queue_draw()
        if self._dwell_progress.is_done():
            if not self.is_drag_active():
                self.emit("activated")
                self.stop_drag()
            return False
        return True
Example #7
0
class KbdWindow(KbdWindowBase, WindowRectTracker, Gtk.Window):

    # Minimum window size (for resizing in system mode, see handle_motion())
    MINIMUM_SIZE = 20

    home_rect = None

    def __init__(self, keyboard_widget, icp):
        self._last_ignore_configure_time = None
        self._last_configures = []
        self._was_visible = False

        Gtk.Window.__init__(self,
                            urgency_hint=False,
                            width_request=self.MINIMUM_SIZE,
                            height_request=self.MINIMUM_SIZE)

        KbdWindowBase.__init__(self, keyboard_widget, icp)

        WindowRectTracker.__init__(self)

        GObject.signal_new("quit-onboard", KbdWindow, GObject.SIGNAL_RUN_LAST,
                           GObject.TYPE_BOOLEAN, ())

        self._auto_position_poll_timer = Timer()

        self.restore_window_rect(startup=True)

        self.connect("map", self._on_map_event)
        self.connect("unmap", self._on_unmap_event)
        self.connect("delete-event", self._on_delete_event)
        self.connect("configure-event", self._on_configure_event)
        # Connect_after seems broken in Quantal, the callback is never called.
        #self.connect_after("configure-event", self._on_configure_event_after)

        self._osk_util.connect_root_property_notify(
            ["_NET_WORKAREA", "_NET_CURRENT_DESKTOP"],
            self._on_root_property_notify)

        once = CallOnce(100).enqueue  # call at most once per 100ms

        rect_changed = lambda x: once(self._on_config_rect_changed)
        config.window.position_notify_add(rect_changed)
        config.window.size_notify_add(rect_changed)

        dock_size_changed = lambda x: once(self._on_config_dock_size_changed)
        config.window.dock_size_notify_add(dock_size_changed)

    def cleanup(self):
        WindowRectTracker.cleanup(self)
        KbdWindowBase.cleanup(self)
        if self.icp:
            self.icp.cleanup()
            self.icp.destroy()
            self.icp = None

    def _on_root_property_notify(self, property):
        """ Fixme: Exceptions get lost in here."""

        if property == "_NET_WORKAREA":

            if config.is_docking_enabled() and \
               not config.xid_mode:
                mon = self.get_docking_monitor()
                new_area = self.get_monitor_workarea()
                area = self._monitor_workarea.get(0)
                if area:
                    # Only check for x changes, y is too dangerous for now,
                    # too easy to get the timing wrong and end up with double docks.
                    if area.x != new_area.x or \
                       area.w != new_area.w:
                        area.x = new_area.x
                        area.w = new_area.w

                        _logger.info("workarea changed to {}, "
                                     "using {} for docking." \
                                     .format(str(new_area), str(area)))
                        self.update_docking()

        elif property == "_NET_CURRENT_DESKTOP":
            # OpenBox: Make sure to move the keyboard to the new desktop
            #          on the next occasion.
            # Unity:   Never reached (Raring), _NET_CURRENT_DESKTOP isn't
            #          set when switching desktops there. However we do get a
            #          configure event, so the transitioning code moves the
            #          window and it is brought to the current desktop anyway.
            self._desktop_switch_count += 1

    def _on_map_event(self, user_data):
        pass

    def _on_unmap_event(self, user_data):
        # Turn off struts in case this unmap is in response to
        # changes in window options, force-to-top in particular.
        if config.is_docking_enabled():
            self.clear_struts()

        # untity starts onboard before the desktops
        # workarea has settled, reset it here on hiding,
        # as we know our struts are gone from this point.
        self.reset_monitor_workarea()

    def on_visibility_changed(self, visible):
        if not self._visible and visible and \
           not config.is_docking_enabled() and \
           not config.xid_mode:
            rect = self.get_current_rect()
            if not rect is None:  # shouldn't happen, fix this
                self.move_resize(*rect)  # sync position

        KbdWindowBase.on_visibility_changed(self, visible)

    def _on_config_rect_changed(self):
        """ Gsettings position or size changed """
        if not config.xid_mode and \
           not config.is_docking_enabled():
            orientation = self.get_screen_orientation()
            rect = self.read_window_rect(orientation)

            # Only apply the new rect if it isn't the one we just wrote to
            # gsettings. Someone has to have manually changed the values
            # in gsettings to allow moving the window.
            rects = list(self._written_window_rects.values())
            if not any(rect == r for r in rects):
                self.restore_window_rect()

    def _on_config_dock_size_changed(self):
        """ Gsettings size changed """
        if not config.xid_mode and \
           config.is_docking_enabled():
            size = self.get_dock_size()

            # Only apply the new rect if it isn't the one we just wrote to
            # gsettings. Someone has to have manually changed the values
            # in gsettings to allow moving the window.
            sizes = list(self._written_dock_sizes.values())
            if not any(size == sz for sz in sizes):
                self.restore_window_rect()

    def on_user_positioning_begin(self):
        self.stop_save_position_timer()
        self.stop_auto_position()
        self.keyboard_widget.freeze_auto_show()

    def on_user_positioning_done(self):
        self.update_window_rect()

        #self.detect_docking()
        if config.is_docking_enabled():
            self.write_docking_size(self.get_screen_orientation(),
                                    self.get_size())
            self.update_docking()
        else:
            self.update_home_rect()

        # Thaw auto show after a short delay to stop the window
        # from hiding due to spurios focus events after a system resize.
        self.keyboard_widget.thaw_auto_show(1.0)

    def detect_docking(self):
        if self.keyboard_widget.was_moving():
            config.window.docking_enabled = False

    def _on_configure_event(self, widget, event):
        self.update_window_rect()

        if not config.is_docking_enabled():
            # Connect_after seems broken in Quantal, but we still need to
            # get in after the default configure handler is done. Try to run
            # _on_configure_event_after in an idle handler instead.
            GLib.idle_add(self._on_configure_event_after, widget, event.copy())

    def _on_configure_event_after(self, widget, event):
        """
        Run this after KeyboardWidget's configure handler.
        After resizing Keyboard.update_layout() has to be called before
        limit_position() or the window jumps when it was close
        to the opposite screen edge of the resize handle.
        """
        # Configure event due to user positioning?
        result = self._filter_configure_event(self._window_rect)
        if result == 0:
            self.update_home_rect()

    def _filter_configure_event(self, rect):
        """
        Returns 0 for detected user positioning/sizing.
        Multiple defenses against false positives, i.e.
        window movement by autoshow, screen rotation, whathaveyou.
        """

        # There is no user positioning in xembed mode.
        if config.xid_mode:
            return -1

        # There is no system provided way to move/resize in
        # force-to-top mode. Solely rely on on_user_positioning_done().
        if config.is_force_to_top():
            return -2

        # There is no user positioning for invisible windows.
        if not self.is_visible():
            return -3

        # There is no user positioning for iconified windows.
        if self.is_iconified():
            return -4

        # There is no user positioning for maximized windows.
        if self.is_maximized():
            return -5

        # Remember past n configure events.
        now = time.time()
        max_events = 4
        self._last_configures = self._last_configures[-(max_events - 1):]

        # Same rect as before?
        if len(self._last_configures) and \
           self._last_configures[-1][0] == rect:
            return 1

        self._last_configures.append([rect, now])

        # Only just started?
        if len(self._last_configures) < max_events:
            return 2

        # Did we just move the window by auto-show?
        if not self._last_ignore_configure_time is None and \
           time.time() - self._last_ignore_configure_time < 0.5:
            return 3

        # Is the new window rect one of our known ones?
        if self.is_known_rect(self._window_rect):
            return 4

        # Dragging the decorated frame doesn't produce continous
        # configure-events anymore as in Oneriric (Precise).
        # Disable all affected checks based on this.
        # The home rect will probably get lost occasionally.
        if not config.has_window_decoration():

            # Less than n configure events in the last x seconds?
            first = self._last_configures[0]
            intervall = now - first[1]
            if intervall > 1.0:
                return 5

            # Is there a jump > threshold in past positions?
            r0 = self._last_configures[-1][0]
            r1 = self._last_configures[-2][0]
            dx = r1.x - r0.x
            dy = r1.y - r0.y
            d2 = dx * dx + dy * dy
            if d2 > 50**2:
                self._last_configures = []  # restart
                return 6

        return 0

    def ignore_configure_events(self):
        self._last_ignore_configure_time = time.time()

    def remember_rect(self, rect):
        """
        Remember the last 3 rectangles of auto-show repositioning.
        Time and order of configure events is somewhat unpredictable,
        so don't rely only on a single remembered rect.
        """
        self._known_window_rects = self._known_window_rects[-3:]
        self._known_window_rects.append(rect)

        # Remembering the rects doesn't help if respositioning outside
        # of the work area in compiz with force-to-top mode disabled.
        # WM corrects window positions to fit into the viewable area.
        # -> add timing based block
        self.ignore_configure_events()

    def get_known_rects(self):
        """
        Return all rects that may have resulted from internal
        window moves, not from user controlled drag operations.
        """
        rects = list(self._known_window_rects)

        co = config.window.landscape
        rects.append(Rect(co.x, co.y, co.width, co.height))

        co = config.window.portrait
        rects.append(Rect(co.x, co.y, co.width, co.height))

        rects.append(self.home_rect)
        return rects

    def is_known_rect(self, rect):
        """
        The home rect should be updated in response to user positiong/resizing.
        However we are unable to detect the end of window movement/resizing
        when window decoration is enabled. Instead we check if the current
        window rect is different from the ones auto-show knows and assume
        the user has changed it in this case.
        """
        return any(rect == r for r in self.get_known_rects())

    def move_home_rect_into_view(self):
        """
        Make sure the home rect is valid, move it if necessary.
        This function may be called even if the window is invisible.
        """
        rect = self._window_rect.copy()
        x, y = rect.x, rect.y
        _x, _y = self.keyboard_widget.limit_position(x, y)
        if _x != x or _y != y:
            self.update_home_rect()

    def update_home_rect(self):
        if config.is_docking_enabled():
            return

        # update home rect
        rect = self._window_rect.copy()

        # Make sure the move button stays visible
        if self.can_move_into_view():
            rect.x, rect.y = self.keyboard_widget.limit_position(
                rect.x, rect.y)

        self.home_rect = rect.copy()
        self.start_save_position_timer()

        # Make transitions aware of the new position,
        # undoubtedly reached by user positioning.
        # Else, window snaps back to the last transition position.
        self.keyboard_widget.sync_transition_position(rect)

    def get_home_rect(self):
        """
        Get the un-repositioned rect, the one auto-show falls back to
        when there is nowhere else to move.
        """
        if config.is_docking_enabled():
            rect = self.get_dock_rect()
        else:
            rect = self.home_rect
        return rect

    def get_visible_rect(self):
        """
        Returns the rect of the visible window rect with auto-show
        repositioning taken into account.
        """
        home_rect = self.get_home_rect()  # aware of docking
        rect = home_rect

        if config.is_auto_show_enabled():

            r = self.get_repositioned_window_rect(home_rect)
            if not r is None:
                rect = r

        return rect

    def auto_position(self):
        self.update_position()

        # With docking enabled, when focusing the search entry of a
        # maximized firefox window, it changes position when the work
        # area shrinks and ends up below Onboard.
        # -> periodically update the window position for a little while,
        #    this way slow systems can catch up too eventually (Nexus 7).
        self._poll_auto_position_start_time = time.time()
        start_delay = 0.1
        self._auto_position_poll_timer.start(start_delay,
                                             self._on_auto_position_poll,
                                             start_delay)

    def _on_auto_position_poll(self, delay):
        self.update_position()

        # start another timer for progressively longer intervals
        delay = min(delay * 2.0, 1.0)
        if time.time() + delay < self._poll_auto_position_start_time + 3.0:
            self._auto_position_poll_timer.start(delay,
                                                 self._on_auto_position_poll,
                                                 delay)
            return True
        else:
            return False

    def stop_auto_position(self):
        self._auto_position_poll_timer.stop()

    def update_position(self):
        home_rect = self.get_home_rect()
        rect = self.get_repositioned_window_rect(home_rect)
        if rect is None:
            # move back home
            rect = home_rect

        if self.get_position() != rect.get_position():
            self.keyboard_widget.transition_position_to(rect.x, rect.y)
            self.keyboard_widget.commit_transition()

    def get_repositioned_window_rect(self, home_rect):
        clearance = config.auto_show.widget_clearance
        test_clearance = clearance
        move_clearance = clearance
        limit_rects = None  # None: all monitors

        # No test clearance when docking. Make it harder to jump
        # out of the dock, for example for the bottom search box
        # in maximized firefox.
        if config.is_docking_enabled():
            test_clearance = (clearance[0], 0, clearance[2], 0)

            # limit the horizontal freedom to the docking monitor
            area, geom = self.get_docking_monitor_rects()
            limit_rects = [area]

        horizontal, vertical = self.get_repositioning_constraints()
        return self.keyboard_widget.auto_show.get_repositioned_window_rect( \
                                        home_rect, limit_rects,
                                        test_clearance, move_clearance,
                                        horizontal, vertical)

    def reposition(self, x, y):
        """
        Move the window from a transition, not meant for user positioning.
        """
        # remember rects to distimguish from user move/resize
        w, h = self.get_size()
        self.remember_rect(Rect(x, y, w, h))

        self.move(x, y)

    def get_repositioning_constraints(self):
        """
        Return allowed respositioning directions for auto-show.
        """
        if config.is_docking_enabled() and \
           self.get_dock_expand():
            return False, True
        else:
            return True, True

    def get_hidden_rect(self):
        """
        Returns the rect of the hidden window rect with auto-show
        repositioning taken into account.
        """
        if config.is_docking_enabled():
            return self.get_docking_hideout_rect()
        return self.get_visible_rect()

    def get_current_rect(self):
        """
        Returns the window rect with auto-show
        repositioning taken into account.
        """
        if self.is_visible():
            rect = self.get_visible_rect()
        else:
            rect = self.get_hidden_rect()
        return rect

    def on_restore_window_rect(self, rect):
        """
        Overload for WindowRectTracker.
        """
        if not config.is_docking_enabled():
            self.home_rect = rect.copy()

        # check for alternative auto-show position
        r = self.get_current_rect()
        if r != rect:
            # remember our rects to distinguish from user move/resize
            self.remember_rect(r)
            rect = r

        self.keyboard_widget.sync_transition_position(rect)
        return rect

    def on_save_window_rect(self, rect):
        """
        Overload for WindowRectTracker.
        """
        # Ignore <rect> (self._window_rect), it may just be a temporary one
        # set by auto-show. Save the user selected home_rect instead.
        return self.home_rect

    def read_window_rect(self, orientation):
        """
        Read orientation dependent rect.
        Overload for WindowRectTracker.
        """
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait
        rect = Rect(co.x, co.y, co.width, co.height)
        return rect

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload for WindowRectTracker.
        """
        # There are separate rects for normal and rotated screen (tablets).
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait

        # remember that we wrote this rect to gsettings
        self._written_window_rects[orientation] = rect.copy()

        # write to gsettings and trigger notifications
        co.settings.delay()
        co.x, co.y, co.width, co.height = rect
        co.settings.apply()

    def write_docking_size(self, orientation, size):
        co = self.get_orientation_config_object()
        expand = self.get_dock_expand()

        # remember that we wrote this rect to gsettings
        self._written_dock_sizes[orientation] = tuple(size)

        # write to gsettings and trigger notifications
        co.settings.delay()
        if not expand:
            co.dock_width = size[0]
        co.dock_height = size[1]
        co.settings.apply()

    def get_orientation_config_object(self):
        orientation = self.get_screen_orientation()
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait
        return co

    def on_transition_done(self, visible_before, visible_now):
        if visible_now:
            self.assure_on_current_desktop()
            self.update_docking()

    def on_screen_size_changed(self, screen):
        """ Screen rotation, etc. """
        if config.is_docking_enabled():
            # Can't correctly position the window while struts are active
            # -> turn them off for a moment
            self.clear_struts()

            # Attempt to hide the keyboard now. This won't work that well
            # as the system doesn't refresh the screen anymore until
            # after the rotation.
            self._was_visible = self.is_visible()
            self._screen_resizing = True
            keyboard_widget = self.keyboard_widget
            if keyboard_widget:
                keyboard_widget.transition_visible_to(False, 0.0)
                keyboard_widget.commit_transition()

        WindowRectTracker.on_screen_size_changed(self, screen)

    def on_screen_size_changed_delayed(self, screen):
        if config.is_docking_enabled():
            self._screen_resizing = False
            self.reset_monitor_workarea()

            # The keyboard size may have changed, draw with the new size now,
            # while it's still in the hideout, so we don't have to watch.
            self.restore_window_rect()
            self.keyboard_widget.process_updates()

            keyboard_widget = self.keyboard_widget
            if keyboard_widget and self._was_visible:
                keyboard_widget.transition_visible_to(True, 0.0, 0.4)
                keyboard_widget.commit_transition()
        else:
            self.restore_window_rect()

    def limit_size(self, rect):
        """
        Limits the given window rect to fit on screen.
        """
        if self.keyboard_widget:
            return self.keyboard_widget.limit_size(rect)
        return rect

    def _emit_quit_onboard(self, event, data=None):
        self.emit("quit-onboard")

    def _on_delete_event(self, event, data=None):
        if config.lockdown.disable_quit:
            if self.keyboard_widget:
                return True
        else:
            self._emit_quit_onboard(event)

    def on_docking_notify(self):
        self.update_docking()
        self.keyboard_widget.update_resize_handles()

    def update_docking(self, force_update=False):
        enable = config.is_docking_enabled()
        if enable:
            rect = self.get_dock_rect()
        else:
            rect = Rect()
        shrink = config.window.docking_shrink_workarea
        edge = config.window.docking_edge
        expand = self.get_dock_expand()

        if self._docking_enabled != enable or \
           (self._docking_enabled and \
            (self._docking_rect != rect or \
             self._shrink_work_area != shrink or \
             self._dock_expand != expand or \
             bool(self._current_struts) != shrink)
           ):
            self.enable_docking(enable)

            self._shrink_work_area = shrink
            self._dock_expand = expand
            self._docking_edge = edge
            self._docking_enabled = enable
            self._docking_rect = rect

    def enable_docking(self, enable):
        if enable:
            self._set_docking_struts(config.window.docking_shrink_workarea,
                                     config.window.docking_edge,
                                     self.get_dock_expand())
            self.restore_window_rect()  # knows about docking
        else:
            self.restore_window_rect()
            self.clear_struts()

    def clear_struts(self):
        self._set_docking_struts(False)

    def _set_docking_struts(self, enable, edge=None, expand=True):
        if not self.get_realized():
            # no window, no xid
            return

        win = self.get_window()
        xid = win.get_xid()  # requires GdkX11 import

        if not enable:
            self._apply_struts(xid, None)
            return

        area, geom = self.get_docking_monitor_rects()
        root = self.get_rootwin_rect()

        rect = self.get_dock_rect()
        top_start_x = top_end_x = 0
        bottom_start_x = bottom_end_x = 0
        #print("geom", geom, "area", area, "rect", rect)

        if edge:  # Bottom
            top = 0
            bottom = geom.h - area.bottom() + rect.h
            #bottom = root.h - area.bottom() + rect.h
            bottom_start_x = rect.left()
            bottom_end_x = rect.right()
        else:  # Top
            top = area.top() + rect.h
            bottom = 0
            top_start_x = rect.left()
            top_end_x = rect.right()

        struts = [
            0, 0, top, bottom, 0, 0, 0, 0, top_start_x, top_end_x,
            bottom_start_x, bottom_end_x
        ]
        self._apply_struts(xid, struts)

    def _apply_struts(self, xid, struts=None):
        if self._current_struts != struts:
            if struts is None:
                self._osk_struts.clear(xid)
            else:
                self._osk_struts.set(xid, struts)
            self._current_struts = struts

    def get_dock_size(self):
        co = self.get_orientation_config_object()
        return co.dock_width, co.dock_height

    def get_dock_expand(self):
        co = self.get_orientation_config_object()
        return co.dock_expand

    def get_dock_rect(self):
        area, geom = self.get_docking_monitor_rects()
        edge = config.window.docking_edge

        width, height = self.get_dock_size()
        rect = Rect(area.x, 0, area.w, height)
        if edge:  # Bottom
            rect.y = area.y + area.h - height
        else:  # Top
            rect.y = area.y

        expand = self.get_dock_expand()
        if expand:
            rect.w = area.w
            rect.x = area.x
        else:
            rect.w = min(width, area.w)
            rect.x = rect.x + (area.w - rect.w) // 2
        return rect

    def get_docking_hideout_rect(self, reference_rect=None):
        """ Where the keyboard goes to hide when it slides off-screen. """
        area, geom = self.get_docking_monitor_rects()
        rect = self.get_dock_rect()
        hideout = rect

        mcx, mcy = geom.get_center()
        if reference_rect:
            cx, cy = reference_rect.get_center()
        else:
            cx, cy = rect.get_center()
        clearance = 10
        if cy > mcy:
            hideout.y = geom.bottom() + clearance  # below Bottom
        else:
            hideout.y = geom.top() - rect.h - clearance  # above Top

        return hideout

    def get_docking_monitor_rects(self):
        screen = self.get_screen()
        mon = self.get_docking_monitor()

        area = self._monitor_workarea.get(mon)
        if area is None:
            area = self.update_monitor_workarea()

        geom = screen.get_monitor_geometry(mon)
        geom = Rect(geom.x, geom.y, geom.width, geom.height)

        return area, geom

    def get_docking_monitor(self):
        screen = self.get_screen()
        return screen.get_primary_monitor()

    def reset_monitor_workarea(self):
        self._monitor_workarea = {}

    def update_monitor_workarea(self):
        """
        Save the workarea, so we don't have to
        check all the time if our strut is already installed.
        """
        mon = self.get_docking_monitor()
        area = self.get_monitor_workarea()
        self._monitor_workarea[mon] = area
        return area

    def get_monitor_workarea(self):
        screen = self.get_screen()
        mon = self.get_docking_monitor()
        area = screen.get_monitor_workarea(mon)
        area = Rect(area.x, area.y, area.width, area.height)
        return area

    @staticmethod
    def get_rootwin_rect():
        rootwin = Gdk.get_default_root_window()
        return Rect.from_position_size(
            rootwin.get_position(),
            (rootwin.get_width(), rootwin.get_height()))

    def is_override_redirect_mode(self):
        return config.is_force_to_top() and \
               self._wm_quirks.can_set_override_redirect(self)

    def assure_on_current_desktop(self):
        """
        Make sure the window is visible in the current desktop in OpenBox and
        perhaps other WMs, except Compiz/Unity. Dbus Show() then makes Onboard
        appear after switching desktop (LP: 1092166, Raring).
        """
        if self._moved_desktop_switch_count != self._desktop_switch_count:
            win = self.get_window()
            if win:
                win.move_to_current_desktop()
                self._moved_desktop_switch_count = self._desktop_switch_count
Example #8
0
class WindowRectTracker:
    """
    Keeps track of the window rectangle when moving/resizing.
    Gtk only updates the position and size asynchrounously on
    configure events and hidden windows return invalid values.
    Auto-show et al need valid values from get_position and
    get_size at all times.
    """
    def __init__(self):
        self._window_rect = None
        self._origin = None
        self._client_offset = (0, 0)
        self._screen_orientation = None
        self._save_position_timer = Timer()

        # init detection of screen "rotation"
        screen = self.get_screen()
        screen.connect('size-changed', self.on_screen_size_changed)

    def cleanup(self):
        self._save_position_timer.finish()

    def move(self, x, y):
        Gtk.Window.move(self, x, y)

    def resize(self, w, h):
        Gtk.Window.resize(self, w, h)

    def move_resize(self, x, y, w, h):
        win = self.get_window()
        if win:
            win.move_resize(x, y, w, h)

    def get_position(self):
        if self._window_rect is None:
            return Gtk.Window.get_position(self)
        else:
            return self._window_rect.get_position()

    def get_size(self):
        if self._window_rect is None:
            return Gtk.Window.get_size(self)
        else:
            return self._window_rect.get_size()

    def get_origin(self):
        if self._origin is None:
            win = self.get_window()
            if win:
                origin = win.get_origin()
                if len(origin
                       ) == 3:  # What is the first parameter for? Gdk bug?
                    origin = origin[1:]
                return origin
            return 0
        else:
            return self._origin

    def get_client_offset(self):
        return self._client_offset

    def get_rect(self):
        return self._window_rect

    def is_visible(self):
        """ This is overloaded in KbdWindow """
        return Gtk.Window.get_visible(self)

    def on_screen_size_changed(self, screen):
        """ detect screen rotation (tablets)"""

        # Give the screen time to settle, the window manager
        # may block the move to previously invalid positions and
        # when docked, the slide animation may be drowned out by all
        # the action in other processes.
        Timer(1.5, self.on_screen_size_changed_delayed, screen)

    def on_screen_size_changed_delayed(self, screen):
        self.restore_window_rect()

    def get_screen_orientation(self):
        """
        Current orientation of the screen (tablet rotation).
        Only the aspect ratio is taken into account at this time.
        This appears to cover more cases than looking at monitor rotation,
        in particular with multi-monitor screens.
        """
        screen = self.get_screen()
        if screen.get_width() >= screen.get_height():
            return Orientation.LANDSCAPE
        else:
            return Orientation.PORTRAIT

    def update_window_rect(self):
        """
        Call this on configure event, the only time when
        get_position, get_size, etc. can be trusted.
        """
        visible = self.is_visible()
        if visible:
            pos = Gtk.Window.get_position(self)
            size = Gtk.Window.get_size(self)
            origin = self.get_window().get_origin()
            if len(origin) == 3:  # What is the first parameter for? Gdk bug?
                origin = origin[1:]

            self._window_rect = Rect.from_position_size(pos, size)
            self._origin = origin
            self._client_offset = (origin[0] - pos[0], origin[1] - pos[1])
            self._screen_orientation = self.get_screen_orientation()

    def restore_window_rect(self, startup=False):
        """
        Restore window size and position.
        """
        # Run pending save operations now, so they don't
        # interfere with the window rect after it was restored.
        self._save_position_timer.finish()

        orientation = self.get_screen_orientation()
        rect = self.read_window_rect(orientation)

        self._screen_orientation = orientation
        self._window_rect = rect
        _logger.debug("restore_window_rect {rect}, {orientation}" \
                      .format(rect = rect, orientation = orientation))

        # Give the derived class a chance to modify the rect,
        # for example to correct the position for auto-show.
        rect = self.on_restore_window_rect(rect)
        self._window_rect = rect

        # move/resize the window
        if startup:
            # gnome-shell doesn't take kindly to an initial move_resize().
            # The window ends up at (0, 0) on and goes back there
            # repeatedly when hiding and unhiding.
            self.set_default_size(rect.w, rect.h)
            self.move(rect.x, rect.y)
        else:
            self.move_resize(rect.x, rect.y, rect.w, rect.h)

        # Initialize shadow variables with valid values so they
        # don't get taken from the unreliable window.
        # Fixes bad positioning of the very first auto-show.
        if startup:
            self._window_rect = rect.copy()
            # Ignore frame dimensions; still better than asking the window.
            self._origin = rect.left_top()
            self._screen_orientation = self.get_screen_orientation()

    def on_restore_window_rect(self, rect):
        return rect

    def save_window_rect(self, orientation=None, rect=None):
        """
        Save window size and position.
        """
        if orientation is None:
            orientation = self._screen_orientation
        if rect is None:
            rect = self._window_rect

        # Give the derived class a chance to modify the rect,
        # for example to override it for auto-show.
        rect = self.on_save_window_rect(rect)

        self.write_window_rect(orientation, rect)

        _logger.debug("save_window_rect {rect}, {orientation}" \
                      .format(rect = rect, orientation = orientation))

    def on_save_window_rect(self, rect):
        return rect

    def read_window_rect(self, orientation, rect):
        """
        Read orientation dependent rect.
        Overload this in derived classes.
        """
        raise NotImplementedError()

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload this in derived classes.
        """
        raise NotImplementedError()

    def start_save_position_timer(self):
        """
        Trigger saving position and size to gsettings
        Delay this a few seconds to avoid excessive disk writes.

        Remember the current rect and rotation as the screen may have been
        rotated when the saving happens.
        """
        self._save_position_timer.start(5, self.save_window_rect,
                                        self.get_screen_orientation(),
                                        self.get_rect())

    def stop_save_position_timer(self):
        self._save_position_timer.stop()
Example #9
0
 def reset(self):
     Timer.stop(self)
     self.draw_unpressed()
Example #10
0
class TouchInput(InputEventSource):
    """
    Unified handling of multi-touch sequences and conventional pointer input.
    """
    GESTURE_DETECTION_SPAN = 100 # [ms] until two finger tap&drag is detected
    GESTURE_DELAY_PAUSE = 3000   # [ms] Suspend delayed sequence begin for this
                                 # amount of time after the last key press.
    delay_sequence_begin = True  # No delivery, i.e. no key-presses after
                                 # gesture detection, but delays press-down.

    def __init__(self):
        InputEventSource.__init__(self)

        self._input_sequences = {}
        self._touch_events_enabled = self.is_touch_enabled()
        self._multi_touch_enabled  = config.keyboard.touch_input == \
                                     TouchInputEnum.MULTI
        self._gestures_enabled     = self._touch_events_enabled
        self._last_event_was_touch = False
        self._last_sequence_time = 0

        self._gesture = NO_GESTURE
        self._gesture_begin_point = (0, 0)
        self._gesture_begin_time = 0
        self._gesture_detected = False
        self._gesture_cancelled = False
        self._num_tap_sequences = 0
        self._gesture_timer = Timer()

    def is_touch_enabled(self):
        return config.keyboard.touch_input != TouchInputEnum.NONE

    def has_input_sequences(self):
        """ Are any clicks/touches still ongoing? """
        return bool(self._input_sequences)

    def last_event_was_touch(self):
        """ Was there just a touch event? """
        return self._last_event_was_touch

    def has_touch_source(self, event):
        """ Was source device of event a touch screen? """
        source_device = event.get_source_device()
        source = source_device.get_source()
        return source == Gdk.InputSource.TOUCHSCREEN

    def _on_button_press_event(self, widget, event):
        if self._touch_events_enabled and \
           self.has_touch_source(event):
                return

        # - Ignore double clicks (GDK_2BUTTON_PRESS),
        #   we're handling them ourselves.
        # - no mouse wheel buttons
        if event.type == Gdk.EventType.BUTTON_PRESS and \
           1 <= event.button <= 3:
            sequence = InputSequence()
            sequence.init_from_button_event(event)
            sequence.primary = True
            self._last_event_was_touch = False

            self._input_sequence_begin(sequence)

    def _on_button_release_event(self, widget, event):
        sequence = self._input_sequences.get(POINTER_SEQUENCE)
        if not sequence is None:
            sequence.point      = (event.x, event.y)
            sequence.root_point = (event.x_root, event.y_root)
            sequence.time       = event.get_time()

            self._input_sequence_end(sequence)

    def _on_motion_event(self, widget, event):
        if self._touch_events_enabled and \
           self.has_touch_source(event):
                return

        sequence = self._input_sequences.get(POINTER_SEQUENCE)
        if sequence is None and \
           not event.state & BUTTON123_MASK:
            sequence = InputSequence()
            sequence.primary = True

        if sequence:
            sequence.init_from_motion_event(event)

            self._last_event_was_touch = False
            self._input_sequence_update(sequence)

    def _on_enter_notify(self, widget, event):
        self.on_enter_notify(widget, event)

    def _on_leave_notify(self, widget, event):
        self.on_leave_notify(widget, event)

    def _on_touch_event(self, widget, event):
        if not self.has_touch_source(event):
            return

        touch = event.touch
        id = str(touch.sequence)
        self._last_event_was_touch = True

        event_type = event.type
        if event_type == Gdk.EventType.TOUCH_BEGIN:
            sequence = InputSequence()
            sequence.init_from_touch_event(touch, id)
            if len(self._input_sequences) == 0:
                sequence.primary = True

            self._input_sequence_begin(sequence)

        elif event_type == Gdk.EventType.TOUCH_UPDATE:
            sequence = self._input_sequences.get(id)
            if not sequence is None:
                sequence.point       = (touch.x, touch.y)
                sequence.root_point  = (touch.x_root, touch.y_root)
                sequence.time        = event.get_time()
                sequence.update_time = time.time()

                self._input_sequence_update(sequence)

        else:
            if event_type == Gdk.EventType.TOUCH_END:
                pass

            elif event_type == Gdk.EventType.TOUCH_CANCEL:
                pass

            sequence = self._input_sequences.get(id)
            if not sequence is None:
                sequence.time = event.get_time()
                self._input_sequence_end(sequence)

    def _input_sequence_begin(self, sequence):
        """ Button press/touch begin """
        self._gesture_sequence_begin(sequence)
        first_sequence = len(self._input_sequences) == 0

        if first_sequence or \
           self._multi_touch_enabled:
            self._input_sequences[sequence.id] = sequence

            if not self._gesture_detected:
                if first_sequence and \
                   self._multi_touch_enabled and \
                   self.delay_sequence_begin and \
                   sequence.time - self._last_sequence_time > \
                                   self.GESTURE_DELAY_PAUSE:
                    # Delay the first tap; we may have to stop it
                    # from reaching the keyboard.
                    self._gesture_timer.start(self.GESTURE_DETECTION_SPAN / 1000.0,
                                              self.on_delayed_sequence_begin,
                                              sequence, sequence.point)

                else:
                    # Tell the keyboard right away.
                    self.deliver_input_sequence_begin(sequence)

        self._last_sequence_time = sequence.time

    def on_delayed_sequence_begin(self, sequence, point):
        if not self._gesture_detected: # work around race condition
            sequence.point = point # return to the original begin point
            self.deliver_input_sequence_begin(sequence)
            self._gesture_cancelled = True
        return False

    def deliver_input_sequence_begin(self, sequence):
        self.on_input_sequence_begin(sequence)
        sequence.delivered = True

    def _input_sequence_update(self, sequence):
        """ Pointer motion/touch update """
        self._gesture_sequence_update(sequence)
        if not sequence.state & BUTTON123_MASK or \
           not self.in_gesture_detection_delay(sequence):
            self._gesture_timer.finish()  # run delayed begin before update
            self.on_input_sequence_update(sequence)

    def _input_sequence_end(self, sequence):
        """ Button release/touch end """
        self._gesture_sequence_end(sequence)
        self._gesture_timer.finish()  # run delayed begin before end
        if sequence.id in self._input_sequences:
            del self._input_sequences[sequence.id]

            if sequence.delivered:
                self.on_input_sequence_end(sequence)

        if self._input_sequences:
            self._discard_stuck_input_sequences()

        self._last_sequence_time = sequence.time

    def _discard_stuck_input_sequences(self):
        """
        Input sequence handling requires guaranteed balancing of
        begin, update and end events. There is no indication yet this
        isn't always the case, but still, at this time it seems like a
        good idea to prepare for the worst.
        -> Clear out aged input sequences, so Onboard can start from a
        fresh slate and not become terminally unresponsive.
        """
        expired_time = time.time() - 30
        for id, sequence in list(self._input_sequences.items()):
            if sequence.update_time < expired_time:
                _logger.warning("discarding expired input sequence " + str(id))
                del self._input_sequences[id]

    def in_gesture_detection_delay(self, sequence):
        """
        Are we still in the time span where sequence begins aren't delayed
        and can't be undone after gesture detection?
        """
        span = sequence.time - self._gesture_begin_time
        return span < self.GESTURE_DETECTION_SPAN

    def _gesture_sequence_begin(self, sequence):
        # first tap?
        if self._num_tap_sequences == 0:
            self._gesture = NO_GESTURE
            self._gesture_detected = False
            self._gesture_cancelled = False
            self._gesture_begin_point = sequence.point
            self._gesture_begin_time = sequence.time # event time
        else: # subsequent taps
            if self.in_gesture_detection_delay(sequence) and \
               not self._gesture_cancelled:
                self._gesture_timer.stop()  # cancel delayed sequence begin
                self._gesture_detected = True
        self._num_tap_sequences += 1

    def _gesture_sequence_update(self, sequence):
        if self._gesture_detected and \
           sequence.state & BUTTON123_MASK and \
           self._gesture == NO_GESTURE:
            point = sequence.point
            dx = self._gesture_begin_point[0] - point[0]
            dy = self._gesture_begin_point[1] - point[1]
            d2 = dx * dx + dy * dy

            # drag gesture?
            if d2 >= DRAG_GESTURE_THRESHOLD2:
                num_touches = len(self._input_sequences)
                self._gesture = DRAG_GESTURE
                self.on_drag_gesture_begin(num_touches)
        return True

    def _gesture_sequence_end(self, sequence):
        if len(self._input_sequences) == 1: # last sequence of the gesture?
            if self._gesture_detected:
                gesture = self._gesture

                if gesture == NO_GESTURE:
                    # tap gesture?
                    elapsed = sequence.time - self._gesture_begin_time
                    if elapsed <= 300:
                        self.on_tap_gesture(self._num_tap_sequences)

                elif gesture == DRAG_GESTURE:
                    self.on_drag_gesture_end(0)

            self._num_tap_sequences = 0

    def on_tap_gesture(self, num_touches):
        return False

    def on_drag_gesture_begin(self, num_touches):
        return False

    def on_drag_gesture_end(self, num_touches):
        return False

    def redirect_sequence_update(self, sequence, func):
        """ redirect input sequence update to self. """
        sequence = self._get_redir_sequence(sequence)
        func(sequence)

    def redirect_sequence_end(self, sequence, func):
        """ Redirect input sequence end to self. """
        sequence = self._get_redir_sequence(sequence)

        # Make sure has_input_sequences() returns False inside of func().
        # The keyboard needs this to detect the end of input.
        if sequence.id in self._input_sequences:
            del self._input_sequences[sequence.id]

        func(sequence)

    def _get_redir_sequence(self, sequence):
        """ Return a copy of <sequence>, managed in the target window. """
        redir_sequence = self._input_sequences.get(sequence.id)
        if redir_sequence is None:
            redir_sequence = sequence.copy()
            redir_sequence.initial_active_key = None
            redir_sequence.active_key = None
            redir_sequence.cancel_key_action = False # was canceled by long press

            self._input_sequences[redir_sequence.id] = redir_sequence

        # convert to the new window client coordinates
        pos = self.get_position()
        rp = sequence.root_point
        redir_sequence.point = (rp[0] - pos[0], rp[1] - pos[1])

        return redir_sequence
class AutoShow(object):
    """
    Auto-show and hide Onboard.
    """

    # Delay from the last focus event until the keyboard is shown/hidden.
    # Raise it to reduce unnecessary transitions (flickering).
    # Lower it for more immediate reactions.
    SHOW_REACTION_TIME = 0.0
    HIDE_REACTION_TIME = 0.3

    _lock_visible = False
    _frozen = False
    _keyboard_widget = None
    _state_tracker = AtspiStateTracker()

    def __init__(self, keyboard_widget):
        self._keyboard_widget = keyboard_widget
        self._auto_show_timer = Timer()
        self._thaw_timer = Timer()
        self._active_accessible = None

    def cleanup(self):
        self._auto_show_timer.stop()
        self._thaw_timer.stop()

    def enable(self, enable):
        if enable:
            self._state_tracker.connect("text-entry-activated",
                                        self._on_text_entry_activated)
            self._state_tracker.connect("text-caret-moved",
                                        self._on_text_caret_moved)
        else:
            self._state_tracker.disconnect("text-entry-activated",
                                           self._on_text_entry_activated)
            self._state_tracker.disconnect("text-caret-moved",
                                           self._on_text_caret_moved)

        if enable:
            self._lock_visible = False
            self._frozen = False

    def is_frozen(self):
        return self._frozen

    def freeze(self, thaw_time=None):
        """
        Stop showing and hiding the keyboard window.
        thaw_time in seconds, None to freeze forever.
        """
        self._frozen = True
        self._thaw_timer.stop()
        if not thaw_time is None:
            self._thaw_timer.start(thaw_time, self._on_thaw)

        # Discard pending hide/show actions.
        self._auto_show_timer.stop()

    def thaw(self, thaw_time=None):
        """
        Allow hiding and showing the keyboard window again.
        thaw_time in seconds, None to thaw immediately.
        """
        self._thaw_timer.stop()
        if thaw_time is None:
            self._thaw()
        else:
            self._thaw_timer.start(thaw_time, self._on_thaw)

    def _on_thaw(self):
        self._thaw_timer.stop()
        self._frozen = False
        return False

    def lock_visible(self, lock, thaw_time=1.0):
        """
        Lock window permanetly visible in response to the user showing it.
        Optionally freeze hiding/showing for a limited time.
        """
        # Permanently lock visible.
        self._lock_visible = lock

        # Temporarily stop showing/hiding.
        if thaw_time:
            self.freeze(thaw_time)

        # Leave the window in its current state,
        # discard pending hide/show actions.
        self._auto_show_timer.stop()

        # Stop pending auto-repositioning
        if lock:
            window = self._keyboard_widget.get_kbd_window()
            if window:
                window.stop_auto_position()

    def _on_text_caret_moved(self, event):
        """
        Show the keyboard on click of an already focused text entry
        (LP: 1078602). Do this only for single line text entries to
        still allow clicking longer documents without having onboard show up.
        """
        if config.auto_show.enabled and \
           not self._keyboard_widget.is_visible():

            accessible = self._active_accessible
            if accessible:
                if self._state_tracker.is_single_line():
                    self._on_text_entry_activated(accessible)

    def _on_text_entry_activated(self, accessible):
        window = self._keyboard_widget.get_kbd_window()
        self._active_accessible = accessible
        active = bool(accessible)

        # show/hide the keyboard window
        if not active is None:
            # Always allow to show the window even when locked.
            # Mitigates right click on unity-2d launcher hiding
            # onboard before _lock_visible is set (Precise).
            if self._lock_visible:
                active = True

            if not self.is_frozen():
                self.show_keyboard(active)

            # The active accessible changed, stop trying to
            # track the position of the previous one.
            # -> less erratic movement during quick focus changes
            if window:
                window.stop_auto_position()

        # reposition the keyboard window
        if active and \
           not accessible is None and \
           not self._lock_visible and \
           not self.is_frozen():
            if window:
                window.auto_position()

    def show_keyboard(self, show):
        """ Begin AUTO_SHOW or AUTO_HIDE transition """
        # Don't act on each and every focus message. Delay the start
        # of the transition slightly so that only the last of a bunch of
        # focus messages is acted on.
        delay = self.SHOW_REACTION_TIME if show else \
                self.HIDE_REACTION_TIME
        self._auto_show_timer.start(delay, self._begin_transition, show)

    def _begin_transition(self, show):
        self._keyboard_widget.transition_visible_to(show)
        self._keyboard_widget.commit_transition()
        return False

    def get_repositioned_window_rect(self,
                                     home,
                                     limit_rects,
                                     test_clearance,
                                     move_clearance,
                                     horizontal=True,
                                     vertical=True):
        """
        Get the alternative window rect suggested by auto-show or None if
        no repositioning is required.
        """
        accessible = self._active_accessible
        if accessible:
            rect = self._state_tracker.get_accessible_extents(accessible)
            if not rect.is_empty() and \
               not self._lock_visible:
                return self._get_window_rect_for_accessible_rect( \
                                            home, rect, limit_rects,
                                            test_clearance, move_clearance,
                                            horizontal, vertical)
        return None

    def _get_window_rect_for_accessible_rect(self,
                                             home,
                                             rect,
                                             limit_rects,
                                             test_clearance,
                                             move_clearance,
                                             horizontal=True,
                                             vertical=True):
        """
        Find new window position based on the screen rect of the accessible.
        """
        mode = "nooverlap"
        x = y = None

        if mode == "closest":
            x, y = rect.left(), rect.bottom()
        if mode == "nooverlap":
            x, y = self._find_non_occluding_position(home, rect, limit_rects,
                                                     test_clearance,
                                                     move_clearance,
                                                     horizontal, vertical)
        if not x is None:
            return Rect(x, y, home.w, home.h)
        else:
            return None

    def _find_non_occluding_position(self,
                                     home,
                                     acc_rect,
                                     limit_rects,
                                     test_clearance,
                                     move_clearance,
                                     horizontal=True,
                                     vertical=True):

        # The home_rect doesn't include window decoration,
        # make sure to add decoration for correct clearance.
        rh = home.copy()
        window = self._keyboard_widget.get_kbd_window()
        if window:
            offset = window.get_client_offset()
            rh.w += offset[0]
            rh.h += offset[1]

        # Leave some clearance around the accessible to account for
        # window frames and position errors of firefox entries.
        ra = acc_rect.apply_border(*test_clearance)

        if rh.intersects(ra):

            # Leave a different clearance for the new to be found positions.
            ra = acc_rect.apply_border(*move_clearance)
            x, y = rh.get_position()

            # candidate positions
            vp = []
            if horizontal:
                vp.append([ra.left() - rh.w, y])
                vp.append([ra.right(), y])
            if vertical:
                vp.append([x, ra.top() - rh.h])
                vp.append([x, ra.bottom()])

            # limited, non-intersecting candidate rectangles
            vr = []
            for p in vp:
                pl = self._keyboard_widget.limit_position(
                    p[0], p[1], self._keyboard_widget.canvas_rect, limit_rects)
                r = Rect(pl[0], pl[1], rh.w, rh.h)
                if not r.intersects(ra):
                    vr.append(r)

            # candidate with smallest center-to-center distance wins
            chx, chy = rh.get_center()
            dmin = None
            rmin = None
            for r in vr:
                cx, cy = r.get_center()
                dx, dy = cx - chx, cy - chy
                d2 = dx * dx + dy * dy
                if dmin is None or dmin > d2:
                    dmin = d2
                    rmin = r

            if not rmin is None:
                return rmin.get_position()

        return None, None
Example #12
0
class KbdWindow(KbdWindowBase, WindowRectTracker, Gtk.Window):

    # Minimum window size (for resizing in system mode, see handle_motion())
    MINIMUM_SIZE = 20

    home_rect = None

    def __init__(self, keyboard_widget, icp):
        self._last_ignore_configure_time = None
        self._last_configures = []
        self._was_visible = False

        Gtk.Window.__init__(self,
                            urgency_hint = False,
                            width_request=self.MINIMUM_SIZE,
                            height_request=self.MINIMUM_SIZE)

        KbdWindowBase.__init__(self, keyboard_widget, icp)

        WindowRectTracker.__init__(self)

        GObject.signal_new("quit-onboard", KbdWindow,
                           GObject.SIGNAL_RUN_LAST,
                           GObject.TYPE_BOOLEAN, ())

        self._auto_position_poll_timer = Timer()

        self.restore_window_rect(startup = True)

        self.connect("map",                     self._on_map_event)
        self.connect("unmap",                   self._on_unmap_event)
        self.connect("delete-event", self._on_delete_event)
        self.connect("configure-event", self._on_configure_event)
        # Connect_after seems broken in Quantal, the callback is never called.
        #self.connect_after("configure-event", self._on_configure_event_after)

        self._osk_util.connect_root_property_notify(["_NET_WORKAREA",
                                                     "_NET_CURRENT_DESKTOP"],
                                                self._on_root_property_notify)

        once = CallOnce(100).enqueue  # call at most once per 100ms

        rect_changed = lambda x: once(self._on_config_rect_changed)
        config.window.position_notify_add(rect_changed)
        config.window.size_notify_add(rect_changed)

        dock_size_changed = lambda x: once(self._on_config_dock_size_changed)
        config.window.dock_size_notify_add(dock_size_changed)

    def cleanup(self):
        WindowRectTracker.cleanup(self)
        KbdWindowBase.cleanup(self)
        if self.icp:
            self.icp.cleanup()
            self.icp.destroy()
            self.icp = None

    def _on_root_property_notify(self, property):
        """ Fixme: Exceptions get lost in here."""

        if property == "_NET_WORKAREA":

           if config.is_docking_enabled() and \
              not config.xid_mode:
                mon = self.get_docking_monitor()
                new_area = self.get_monitor_workarea()
                area = self._monitor_workarea.get(0)
                if area:
                    # Only check for x changes, y is too dangerous for now,
                    # too easy to get the timing wrong and end up with double docks.
                    if area.x != new_area.x or \
                       area.w != new_area.w:
                        area.x = new_area.x
                        area.w = new_area.w

                        _logger.info("workarea changed to {}, "
                                     "using {} for docking." \
                                     .format(str(new_area), str(area)))
                        self.update_docking()

        elif property == "_NET_CURRENT_DESKTOP":
            # OpenBox: Make sure to move the keyboard to the new desktop
            #          on the next occasion.
            # Unity:   Never reached (Raring), _NET_CURRENT_DESKTOP isn't
            #          set when switching desktops there. However we do get a
            #          configure event, so the transitioning code moves the
            #          window and it is brought to the current desktop anyway.
            self._desktop_switch_count += 1

    def _on_map_event(self, user_data):
        pass

    def _on_unmap_event(self, user_data):
        # Turn off struts in case this unmap is in response to
        # changes in window options, force-to-top in particular.
        if config.is_docking_enabled():
            self.clear_struts()

        # untity starts onboard before the desktops
        # workarea has settled, reset it here on hiding,
        # as we know our struts are gone from this point.
        self.reset_monitor_workarea()

    def on_visibility_changed(self, visible):
        if not self._visible and visible and \
           not config.is_docking_enabled() and \
           not config.xid_mode:
            rect = self.get_current_rect()
            if not rect is None: # shouldn't happen, fix this
                self.move_resize(*rect) # sync position

        KbdWindowBase.on_visibility_changed(self, visible)

    def _on_config_rect_changed(self):
        """ Gsettings position or size changed """
        if not config.xid_mode and \
           not config.is_docking_enabled():
            orientation = self.get_screen_orientation()
            rect = self.read_window_rect(orientation)

            # Only apply the new rect if it isn't the one we just wrote to
            # gsettings. Someone has to have manually changed the values
            # in gsettings to allow moving the window.
            rects = list(self._written_window_rects.values())
            if not any(rect == r for r in rects):
                self.restore_window_rect()

    def _on_config_dock_size_changed(self):
        """ Gsettings size changed """
        if not config.xid_mode and \
           config.is_docking_enabled():
            size = self.get_dock_size()

            # Only apply the new rect if it isn't the one we just wrote to
            # gsettings. Someone has to have manually changed the values
            # in gsettings to allow moving the window.
            sizes = list(self._written_dock_sizes.values())
            if not any(size == sz for sz in sizes):
                self.restore_window_rect()

    def on_user_positioning_begin(self):
        self.stop_save_position_timer()
        self.stop_auto_position()
        self.keyboard_widget.freeze_auto_show()

    def on_user_positioning_done(self):
        self.update_window_rect()

        #self.detect_docking()
        if config.is_docking_enabled():
            self.write_docking_size(self.get_screen_orientation(),
                                    self.get_size())
            self.update_docking()
        else:
            self.update_home_rect()

        # Thaw auto show after a short delay to stop the window
        # from hiding due to spurios focus events after a system resize.
        self.keyboard_widget.thaw_auto_show(1.0)

    def detect_docking(self):
        if self.keyboard_widget.was_moving():
            config.window.docking_enabled = False

    def _on_configure_event(self, widget, event):
        self.update_window_rect()

        if not config.is_docking_enabled():
            # Connect_after seems broken in Quantal, but we still need to
            # get in after the default configure handler is done. Try to run
            # _on_configure_event_after in an idle handler instead.
            GLib.idle_add(self._on_configure_event_after, widget, event.copy())

    def _on_configure_event_after(self, widget, event):
        """
        Run this after KeyboardWidget's configure handler.
        After resizing Keyboard.update_layout() has to be called before
        limit_position() or the window jumps when it was close
        to the opposite screen edge of the resize handle.
        """
        # Configure event due to user positioning?
        result = self._filter_configure_event(self._window_rect)
        if result == 0:
            self.update_home_rect()

    def _filter_configure_event(self, rect):
        """
        Returns 0 for detected user positioning/sizing.
        Multiple defenses against false positives, i.e.
        window movement by autoshow, screen rotation, whathaveyou.
        """

        # There is no user positioning in xembed mode.
        if config.xid_mode:
            return -1

        # There is no system provided way to move/resize in
        # force-to-top mode. Solely rely on on_user_positioning_done().
        if config.is_force_to_top():
            return -2

        # There is no user positioning for invisible windows.
        if not self.is_visible():
            return -3

        # There is no user positioning for iconified windows.
        if self.is_iconified():
            return -4

        # There is no user positioning for maximized windows.
        if self.is_maximized():
            return -5

        # Remember past n configure events.
        now = time.time()
        max_events = 4
        self._last_configures = self._last_configures[-(max_events - 1):]

        # Same rect as before?
        if len(self._last_configures) and \
           self._last_configures[-1][0] == rect:
            return 1

        self._last_configures.append([rect, now])

        # Only just started?
        if len(self._last_configures) < max_events:
            return 2

        # Did we just move the window by auto-show?
        if not self._last_ignore_configure_time is None and \
           time.time() - self._last_ignore_configure_time < 0.5:
            return 3

        # Is the new window rect one of our known ones?
        if self.is_known_rect(self._window_rect):
            return 4

        # Dragging the decorated frame doesn't produce continous
        # configure-events anymore as in Oneriric (Precise).
        # Disable all affected checks based on this.
        # The home rect will probably get lost occasionally.
        if not config.has_window_decoration():

            # Less than n configure events in the last x seconds?
            first = self._last_configures[0]
            intervall = now - first[1]
            if intervall > 1.0:
                return 5

            # Is there a jump > threshold in past positions?
            r0 = self._last_configures[-1][0]
            r1 = self._last_configures[-2][0]
            dx = r1.x - r0.x
            dy = r1.y - r0.y
            d2 = dx * dx + dy * dy
            if d2 > 50**2:
                self._last_configures = [] # restart
                return 6

        return 0

    def ignore_configure_events(self):
        self._last_ignore_configure_time = time.time()

    def remember_rect(self, rect):
        """
        Remember the last 3 rectangles of auto-show repositioning.
        Time and order of configure events is somewhat unpredictable,
        so don't rely only on a single remembered rect.
        """
        self._known_window_rects = self._known_window_rects[-3:]
        self._known_window_rects.append(rect)

        # Remembering the rects doesn't help if respositioning outside
        # of the work area in compiz with force-to-top mode disabled.
        # WM corrects window positions to fit into the viewable area.
        # -> add timing based block
        self.ignore_configure_events()

    def get_known_rects(self):
        """
        Return all rects that may have resulted from internal
        window moves, not from user controlled drag operations.
        """
        rects = list(self._known_window_rects)

        co = config.window.landscape
        rects.append(Rect(co.x, co.y, co.width, co.height))

        co = config.window.portrait
        rects.append(Rect(co.x, co.y, co.width, co.height))

        rects.append(self.home_rect)
        return rects

    def is_known_rect(self, rect):
        """
        The home rect should be updated in response to user positiong/resizing.
        However we are unable to detect the end of window movement/resizing
        when window decoration is enabled. Instead we check if the current
        window rect is different from the ones auto-show knows and assume
        the user has changed it in this case.
        """
        return any(rect == r for r in self.get_known_rects())

    def move_home_rect_into_view(self):
        """
        Make sure the home rect is valid, move it if necessary.
        This function may be called even if the window is invisible.
        """
        rect = self._window_rect.copy()
        x, y = rect.x, rect.y
        _x, _y = self.keyboard_widget.limit_position(x, y)
        if _x != x or _y != y:
            self.update_home_rect()

    def update_home_rect(self):
        if config.is_docking_enabled():
            return

        # update home rect
        rect = self._window_rect.copy()

        # Make sure the move button stays visible
        if self.can_move_into_view():
            rect.x, rect.y = self.keyboard_widget.limit_position(rect.x, rect.y)

        self.home_rect = rect.copy()
        self.start_save_position_timer()

        # Make transitions aware of the new position,
        # undoubtedly reached by user positioning.
        # Else, window snaps back to the last transition position.
        self.keyboard_widget.sync_transition_position(rect)

    def get_home_rect(self):
        """
        Get the un-repositioned rect, the one auto-show falls back to
        when there is nowhere else to move.
        """
        if config.is_docking_enabled():
            rect = self.get_dock_rect()
        else:
            rect = self.home_rect
        return rect

    def get_visible_rect(self):
        """
        Returns the rect of the visible window rect with auto-show
        repositioning taken into account.
        """
        home_rect = self.get_home_rect()  # aware of docking
        rect = home_rect

        if config.is_auto_show_enabled():

            r = self.get_repositioned_window_rect(home_rect)
            if not r is None:
                rect = r

        return rect

    def auto_position(self):
        self.update_position()

        # With docking enabled, when focusing the search entry of a
        # maximized firefox window, it changes position when the work
        # area shrinks and ends up below Onboard.
        # -> periodically update the window position for a little while,
        #    this way slow systems can catch up too eventually (Nexus 7).
        self._poll_auto_position_start_time = time.time()
        start_delay = 0.1
        self._auto_position_poll_timer.start(start_delay,
                                             self._on_auto_position_poll,
                                             start_delay)

    def _on_auto_position_poll(self, delay):
        self.update_position()

        # start another timer for progressively longer intervals
        delay = min(delay * 2.0, 1.0)
        if time.time() + delay < self._poll_auto_position_start_time + 3.0:
            self._auto_position_poll_timer.start(delay,
                                                 self._on_auto_position_poll,
                                                 delay)
            return True
        else:
            return False

    def stop_auto_position(self):
        self._auto_position_poll_timer.stop()

    def update_position(self):
        home_rect = self.get_home_rect()
        rect = self.get_repositioned_window_rect(home_rect)
        if rect is None:
            # move back home
            rect = home_rect

        if self.get_position() != rect.get_position():
            self.keyboard_widget.transition_position_to(rect.x, rect.y)
            self.keyboard_widget.commit_transition()

    def get_repositioned_window_rect(self, home_rect):
        clearance = config.auto_show.widget_clearance
        test_clearance = clearance
        move_clearance = clearance
        limit_rects = None  # None: all monitors

        # No test clearance when docking. Make it harder to jump
        # out of the dock, for example for the bottom search box
        # in maximized firefox.
        if config.is_docking_enabled():
            test_clearance = (clearance[0], 0, clearance[2], 0)

            # limit the horizontal freedom to the docking monitor
            area, geom = self.get_docking_monitor_rects()
            limit_rects = [area]

        horizontal, vertical = self.get_repositioning_constraints()
        return self.keyboard_widget.auto_show.get_repositioned_window_rect( \
                                        home_rect, limit_rects,
                                        test_clearance, move_clearance,
                                        horizontal, vertical)

    def reposition(self, x, y):
        """
        Move the window from a transition, not meant for user positioning.
        """
        # remember rects to distimguish from user move/resize
        w, h = self.get_size()
        self.remember_rect(Rect(x, y, w, h))

        self.move(x, y)

    def get_repositioning_constraints(self):
        """
        Return allowed respositioning directions for auto-show.
        """
        if config.is_docking_enabled() and \
           self.get_dock_expand():
            return False, True
        else:
            return True, True

    def get_hidden_rect(self):
        """
        Returns the rect of the hidden window rect with auto-show
        repositioning taken into account.
        """
        if config.is_docking_enabled():
            return self.get_docking_hideout_rect()
        return self.get_visible_rect()

    def get_current_rect(self):
        """
        Returns the window rect with auto-show
        repositioning taken into account.
        """
        if self.is_visible():
            rect = self.get_visible_rect()
        else:
            rect = self.get_hidden_rect()
        return rect

    def on_restore_window_rect(self, rect):
        """
        Overload for WindowRectTracker.
        """
        if not config.is_docking_enabled():
            self.home_rect = rect.copy()

        # check for alternative auto-show position
        r = self.get_current_rect()
        if r != rect:
            # remember our rects to distinguish from user move/resize
            self.remember_rect(r)
            rect = r

        self.keyboard_widget.sync_transition_position(rect)
        return rect

    def on_save_window_rect(self, rect):
        """
        Overload for WindowRectTracker.
        """
        # Ignore <rect> (self._window_rect), it may just be a temporary one
        # set by auto-show. Save the user selected home_rect instead.
        return self.home_rect

    def read_window_rect(self, orientation):
        """
        Read orientation dependent rect.
        Overload for WindowRectTracker.
        """
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait
        rect = Rect(co.x, co.y, co.width, co.height)
        return rect

    def write_window_rect(self, orientation, rect):
        """
        Write orientation dependent rect.
        Overload for WindowRectTracker.
        """
        # There are separate rects for normal and rotated screen (tablets).
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait

        # remember that we wrote this rect to gsettings
        self._written_window_rects[orientation] = rect.copy()

        # write to gsettings and trigger notifications
        co.settings.delay()
        co.x, co.y, co.width, co.height = rect
        co.settings.apply()

    def write_docking_size(self, orientation, size):
        co = self.get_orientation_config_object()
        expand = self.get_dock_expand()

        # remember that we wrote this rect to gsettings
        self._written_dock_sizes[orientation] = tuple(size)

        # write to gsettings and trigger notifications
        co.settings.delay()
        if not expand:
            co.dock_width = size[0]
        co.dock_height = size[1]
        co.settings.apply()

    def get_orientation_config_object(self):
        orientation = self.get_screen_orientation()
        if orientation == Orientation.LANDSCAPE:
            co = config.window.landscape
        else:
            co = config.window.portrait
        return co

    def on_transition_done(self, visible_before, visible_now):
        if visible_now:
            self.assure_on_current_desktop()
            self.update_docking()

    def on_screen_size_changed(self, screen):
        """ Screen rotation, etc. """
        if config.is_docking_enabled():
            # Can't correctly position the window while struts are active
            # -> turn them off for a moment
            self.clear_struts()

            # Attempt to hide the keyboard now. This won't work that well
            # as the system doesn't refresh the screen anymore until
            # after the rotation.
            self._was_visible = self.is_visible()
            self._screen_resizing = True
            keyboard_widget = self.keyboard_widget
            if keyboard_widget:
                keyboard_widget.transition_visible_to(False, 0.0)
                keyboard_widget.commit_transition()

        WindowRectTracker.on_screen_size_changed(self, screen)

    def on_screen_size_changed_delayed(self, screen):
        if config.is_docking_enabled():
            self._screen_resizing = False
            self.reset_monitor_workarea()

            # The keyboard size may have changed, draw with the new size now,
            # while it's still in the hideout, so we don't have to watch.
            self.restore_window_rect()
            self.keyboard_widget.process_updates()

            keyboard_widget = self.keyboard_widget
            if keyboard_widget and self._was_visible:
                keyboard_widget.transition_visible_to(True, 0.0, 0.4)
                keyboard_widget.commit_transition()
        else:
            self.restore_window_rect()

    def limit_size(self, rect):
        """
        Limits the given window rect to fit on screen.
        """
        if self.keyboard_widget:
            return self.keyboard_widget.limit_size(rect)
        return rect

    def _emit_quit_onboard(self, event, data=None):
        self.emit("quit-onboard")

    def _on_delete_event(self, event, data=None):
        if config.lockdown.disable_quit:
            if self.keyboard_widget:
                return True
        else:
            self._emit_quit_onboard(event)

    def on_docking_notify(self):
        self.update_docking()
        self.keyboard_widget.update_resize_handles()

    def update_docking(self, force_update = False):
        enable = config.is_docking_enabled()
        if enable:
            rect = self.get_dock_rect()
        else:
            rect = Rect()
        shrink = config.window.docking_shrink_workarea
        edge = config.window.docking_edge
        expand = self.get_dock_expand()

        if self._docking_enabled != enable or \
           (self._docking_enabled and \
            (self._docking_rect != rect or \
             self._shrink_work_area != shrink or \
             self._dock_expand != expand or \
             bool(self._current_struts) != shrink)
           ):
            self.enable_docking(enable)

            self._shrink_work_area = shrink
            self._dock_expand = expand
            self._docking_edge = edge
            self._docking_enabled = enable
            self._docking_rect = rect

    def enable_docking(self, enable):
        if enable:
            self._set_docking_struts(config.window.docking_shrink_workarea,
                                     config.window.docking_edge,
                                     self.get_dock_expand())
            self.restore_window_rect() # knows about docking
        else:
            self.restore_window_rect()
            self.clear_struts()

    def clear_struts(self):
        self._set_docking_struts(False)

    def _set_docking_struts(self, enable, edge = None, expand = True):
        if not self.get_realized():
            # no window, no xid
            return

        win = self.get_window()
        xid = win.get_xid()  # requires GdkX11 import

        if not enable:
            self._apply_struts(xid, None)
            return

        area, geom = self.get_docking_monitor_rects()
        root = self.get_rootwin_rect()

        rect = self.get_dock_rect()
        top_start_x = top_end_x = 0
        bottom_start_x = bottom_end_x = 0
        #print("geom", geom, "area", area, "rect", rect)

        if edge: # Bottom
            top    = 0
            bottom = geom.h - area.bottom() + rect.h
            #bottom = root.h - area.bottom() + rect.h
            bottom_start_x = rect.left()
            bottom_end_x   = rect.right()
        else:    # Top
            top    = area.top() + rect.h
            bottom = 0
            top_start_x = rect.left()
            top_end_x   = rect.right()

        struts = [0, 0, top, bottom, 0, 0, 0, 0,
                  top_start_x, top_end_x, bottom_start_x, bottom_end_x]
        self._apply_struts(xid, struts)

    def _apply_struts(self, xid, struts = None):
        if self._current_struts != struts:
            if struts is None:
                self._osk_struts.clear(xid)
            else:
                self._osk_struts.set(xid, struts)
            self._current_struts = struts

    def get_dock_size(self):
        co = self.get_orientation_config_object()
        return co.dock_width, co.dock_height

    def get_dock_expand(self):
        co = self.get_orientation_config_object()
        return co.dock_expand

    def get_dock_rect(self):
        area, geom = self.get_docking_monitor_rects()
        edge = config.window.docking_edge

        width, height = self.get_dock_size()
        rect = Rect(area.x, 0, area.w, height)
        if edge: # Bottom
            rect.y = area.y + area.h - height
        else:    # Top
            rect.y = area.y

        expand = self.get_dock_expand()
        if expand:
            rect.w = area.w
            rect.x = area.x
        else:
            rect.w = min(width, area.w)
            rect.x = rect.x + (area.w - rect.w) // 2
        return rect

    def get_docking_hideout_rect(self, reference_rect = None):
        """ Where the keyboard goes to hide when it slides off-screen. """
        area, geom = self.get_docking_monitor_rects()
        rect = self.get_dock_rect()
        hideout = rect

        mcx, mcy = geom.get_center()
        if reference_rect:
            cx, cy = reference_rect.get_center()
        else:
            cx, cy = rect.get_center()
        clearance = 10
        if cy > mcy:
            hideout.y = geom.bottom() + clearance  # below Bottom
        else:
            hideout.y = geom.top() - rect.h - clearance # above Top

        return hideout

    def get_docking_monitor_rects(self):
        screen = self.get_screen()
        mon = self.get_docking_monitor()

        area = self._monitor_workarea.get(mon)
        if area is None:
            area = self.update_monitor_workarea()

        geom = screen.get_monitor_geometry(mon)
        geom = Rect(geom.x, geom.y, geom.width, geom.height)

        return area, geom

    def get_docking_monitor(self):
        screen = self.get_screen()
        return screen.get_primary_monitor()

    def reset_monitor_workarea(self):
        self._monitor_workarea = {}

    def update_monitor_workarea(self):
        """
        Save the workarea, so we don't have to
        check all the time if our strut is already installed.
        """
        mon = self.get_docking_monitor()
        area = self.get_monitor_workarea()
        self._monitor_workarea[mon] = area
        return area

    def get_monitor_workarea(self):
        screen = self.get_screen()
        mon = self.get_docking_monitor()
        area = screen.get_monitor_workarea(mon)
        area = Rect(area.x, area.y, area.width, area.height)
        return area

    @staticmethod
    def get_rootwin_rect():
        rootwin = Gdk.get_default_root_window()
        return Rect.from_position_size(rootwin.get_position(),
                                (rootwin.get_width(), rootwin.get_height()))
    def is_override_redirect_mode(self):
        return config.is_force_to_top() and \
               self._wm_quirks.can_set_override_redirect(self)

    def assure_on_current_desktop(self):
        """
        Make sure the window is visible in the current desktop in OpenBox and
        perhaps other WMs, except Compiz/Unity. Dbus Show() then makes Onboard
        appear after switching desktop (LP: 1092166, Raring).
        """
        if self._moved_desktop_switch_count != self._desktop_switch_count:
            win = self.get_window()
            if win:
                win.move_to_current_desktop()
                self._moved_desktop_switch_count = self._desktop_switch_count