コード例 #1
0
    def draw_image(self, context, lod):
        """
        Draws the key's optional image.
        Fixme: merge with draw_label, can't do this for 0.99 because
        the Gdk.flush() workaround on the nexus 7 might fail.
        """
        if not self.image_filenames:
            return

        log_rect = self.get_label_rect()
        rect = self.context.log_to_canvas_rect(log_rect)
        if rect.w < 1 or rect.h < 1:
            return

        pixbuf = self.get_image(rect.w, rect.h)
        if not pixbuf:
            return

        src_size = (pixbuf.get_width(), pixbuf.get_height())
        log_rect = self.get_label_rect()

        canvas_rect = self.context.log_to_canvas_rect(log_rect)
        xalign, yalign = self.align_label(src_size,
                                          (canvas_rect.w, canvas_rect.h))
        x = int(canvas_rect.x + xalign)
        y = int(canvas_rect.y + yalign)

        label_rgba = self.get_label_color()
        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(self, context,
                                   self.get_dwell_progress_canvas_rect(),
                                   self.get_dwell_progress_color())
            if lum:
                rgba = brighten(lum, *fill)  # darker
            else:
                rgba = label_rgba

            # Draw the image in the themes label color.
            # Only the alpha channel of the image is used.
            Gdk.cairo_set_source_pixbuf(context, pixbuf, x + dx, y + dy)
            pattern = context.get_source()
            context.rectangle(*rect)
            context.set_source_rgba(*rgba)
            context.mask(pattern)
            context.new_path()
コード例 #2
0
ファイル: KeyGtk.py プロジェクト: elissandroj/Inputability
    def draw_image(self, context, lod):
        """
        Draws the key's optional image.
        Fixme: merge with draw_label, can't do this for 0.99 because
        the Gdk.flush() workaround on the nexus 7 might fail.
        """
        if not self.image_filenames:
            return

        log_rect = self.get_label_rect()
        rect = self.context.log_to_canvas_rect(log_rect)
        if rect.w < 1 or rect.h < 1:
            return

        pixbuf = self.get_image(rect.w, rect.h)
        if not pixbuf:
            return

        src_size = (pixbuf.get_width(), pixbuf.get_height())
        log_rect = self.get_label_rect()

        canvas_rect = self.context.log_to_canvas_rect(log_rect)
        xalign, yalign = self.align_label(src_size, (canvas_rect.w, canvas_rect.h))
        x = int(canvas_rect.x + xalign)
        y = int(canvas_rect.y + yalign)

        label_rgba = self.get_label_color()
        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(
                    self, context, self.get_dwell_progress_canvas_rect(), self.get_dwell_progress_color()
                )
            if lum:
                rgba = brighten(lum, *fill)  # darker
            else:
                rgba = label_rgba

            # Draw the image in the themes label color.
            # Only the alpha channel of the image is used.
            Gdk.cairo_set_source_pixbuf(context, pixbuf, x + dx, y + dy)
            pattern = context.get_source()
            context.rectangle(*rect)
            context.set_source_rgba(*rgba)
            context.mask(pattern)
            context.new_path()
コード例 #3
0
ファイル: KeyGtk.py プロジェクト: jegger/onboard
    def draw_image(self, context, lod):
        """
        Draws the key's optional image.
        Fixme: merge with draw_label, can't do this for 0.99 because
        the Gdk.flush() workaround on the nexus 7 might fail.
        """
        if not self.image_filenames or not self.show_image:
            return

        log_rect = self.get_label_rect()
        rect = self.context.log_to_canvas_rect(log_rect)
        if rect.w < 1 or rect.h < 1:
            return

        pixbuf = self.get_image(rect.w, rect.h)
        if not pixbuf:
            return

        src_size = (pixbuf.get_width(), pixbuf.get_height())
        xalign, yalign = self.align_label(src_size, (rect.w, rect.h))

        label_rgba = self.get_label_color()
        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(self, context,
                                   self.get_dwell_progress_canvas_rect(),
                                   self.get_dwell_progress_color())
            if lum:
                rgba = brighten(lum, *fill) # darker
            else:
                rgba = label_rgba

            pixbuf.draw(context, rect.offset(xalign + dx, yalign + dy), rgba)
コード例 #4
0
ファイル: KeyGtk.py プロジェクト: jegger/onboard
    def draw_label(self, context, lod):
        # Skip cairo errors when drawing labels with font size 0
        # This may happen for hidden keys and keys with bad size groups.
        if self.font_size == 0 or not self.show_label:
            return

        runs = self.get_label_runs()
        if not runs:
            return

        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(self, context,
                                   self.get_dwell_progress_canvas_rect(),
                                   self.get_dwell_progress_color())
            for layout, x, y, rgba in runs:
                if lum:
                    rgba = brighten(lum, *fill) # darker
                context.move_to(x + dx, y + dy)
                context.set_source_rgba(*rgba)
                PangoCairo.show_layout(context, layout)
コード例 #5
0
    def draw_label(self, context, lod):
        # Skip cairo errors when drawing labels with font size 0
        # This may happen for hidden keys and keys with bad size groups.
        if self.font_size == 0:
            return

        runs = self.get_label_runs()
        if not runs:
            return

        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(self, context,
                                   self.get_dwell_progress_canvas_rect(),
                                   self.get_dwell_progress_color())
            for layout, x, y, rgba in runs:
                if lum:
                    rgba = brighten(lum, *fill)  # darker
                context.move_to(x + dx, y + dy)
                context.set_source_rgba(*rgba)
                PangoCairo.show_layout(context, layout)
コード例 #6
0
ファイル: KeyGtk.py プロジェクト: keymanapp/onboard-keyman
    def draw_image(self, context, lod):
        """
        Draws the key's optional image.
        Fixme: merge with draw_label, can't do this for 0.99 because
        the Gdk.flush() workaround on the nexus 7 might fail.
        """
        if not self.image_filenames or not self.show_image:
            return

        log_rect = self.get_label_rect()
        rect = self.context.log_to_canvas_rect(log_rect)
        if rect.w < 1 or rect.h < 1:
            return

        pixbuf = self.get_image(rect.w, rect.h)
        if not pixbuf:
            return

        src_size = (pixbuf.get_width(), pixbuf.get_height())
        xalign, yalign = self.align_label(src_size, (rect.w, rect.h))

        label_rgba = self.get_label_color()
        fill = self.get_fill_color()

        for dx, dy, lum, last in self._label_iterations(lod):
            # draw dwell progress after fake emboss, before final image
            if last and self.is_dwelling():
                DwellProgress.draw(self, context,
                                   self.get_dwell_progress_canvas_rect(),
                                   self.get_dwell_progress_color())
            if lum:
                rgba = brighten(lum, *fill)  # darker
            else:
                rgba = label_rgba

            pixbuf.draw(context, rect.offset(xalign + dx, yalign + dy), rgba)
コード例 #7
0
ファイル: IconPalette.py プロジェクト: jegger/onboard
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.SignalFlags.RUN_LAST,
                            GObject.TYPE_NONE, ())
    }

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

    OPACITY = 0.75

    _layout_view = None

    def __init__(self, keyboard):
        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

        self._menu = ContextMenu(keyboard)

        args = {
            "type_hint" : self._get_window_type_hint(),
            "skip_taskbar_hint" : True,
            "skip_pager_hint" : True,
            "urgency_hint" : False,
            "decorated" : False,
            "accept_focus" : False,
            "width_request" : self.MINIMUM_SIZE,
            "height_request" : self.MINIMUM_SIZE,
            "app_paintable" : True,
        }
        if gtk_has_resize_grip_support():
            args["has_resize_grip"] = False

        Gtk.Window.__init__(self, **args)

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

        self.set_keep_above(True)

        self.drawing_area = Gtk.DrawingArea()
        self.add(self.drawing_area)
        self.drawing_area.connect("draw", self._on_draw)
        self.drawing_area.show()

        # use transparency if available
        visual = Gdk.Screen.get_default().get_rgba_visual()
        if visual:
            self.set_visual(visual)
            self.drawing_area.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("draw", self._on_draw)
        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("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)
        # no flashing on left screen edge in unity
        # self.set_default_size(1, 1)
        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
        config.icp.position_notify_add(
            lambda x: once(self._on_config_rect_changed))
        config.icp.size_notify_add(
            lambda x: once(self._on_config_rect_changed))
        config.icp.window_handles_notify_add(
            lambda x: self.update_window_handles())

        self.update_sticky_state()
        self.update_window_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 get_menu(self):
        return self._menu

    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_window_handles(self):
        """ Tell WindowManipulator about the active resize/move handles """
        self.set_drag_handles(config.icp.window_handles)

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

    def _on_button_press_event(self, widget, event):
        if event.window == self.get_window():
            if Gdk.Event.triggers_context_menu(event):
                self._menu.popup(event.button, event.get_time())

            elif event.button == Gdk.BUTTON_PRIMARY:
                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 True

    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 True

    def _on_button_release_event(self, widget, event):
        """
        Save the window geometry, hide the IconPalette and
        emit the "activated" signal.
        """
        if event.window == self.get_window():
            if event.button == 1 and \
               event.window == self.get_window() and \
               not self.is_drag_active():
                self.emit("activated")

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

        return True

    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, widget.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()

        composited = Gdk.Screen.get_default().is_composited()
        if composited:
            cr.push_group()

        # 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:
            # take dwell color from the first icon "key"
            key  = RectKey("icon0")
            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)

        if composited:
            cr.pop_group_to_source()
            cr.paint_with_alpha(self.OPACITY)

        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_all(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
コード例 #8
0
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.SignalFlags.RUN_LAST, GObject.TYPE_NONE, ())
    }
    """ Minimum size of the IconPalette """
    MINIMUM_SIZE = 20

    OPACITY = 0.75

    _layout_view = None

    def __init__(self, keyboard):
        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

        self._menu = ContextMenu(keyboard)

        args = {
            "type_hint": self._get_window_type_hint(),
            "skip_taskbar_hint": True,
            "skip_pager_hint": True,
            "urgency_hint": False,
            "decorated": False,
            "accept_focus": False,
            "width_request": self.MINIMUM_SIZE,
            "height_request": self.MINIMUM_SIZE,
            "app_paintable": True,
        }
        if gtk_has_resize_grip_support():
            args["has_resize_grip"] = False

        Gtk.Window.__init__(self, **args)

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

        self.set_keep_above(True)

        self.drawing_area = Gtk.DrawingArea()
        self.add(self.drawing_area)
        self.drawing_area.connect("draw", self._on_draw)
        self.drawing_area.show()

        # use transparency if available
        visual = Gdk.Screen.get_default().get_rgba_visual()
        if visual:
            self.set_visual(visual)
            self.drawing_area.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("draw", self._on_draw)
        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("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)
        # no flashing on left screen edge in unity
        # self.set_default_size(1, 1)
        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
        config.icp.position_notify_add(
            lambda x: once(self._on_config_rect_changed))
        config.icp.size_notify_add(
            lambda x: once(self._on_config_rect_changed))
        config.icp.window_handles_notify_add(
            lambda x: self.update_window_handles())

        self.update_sticky_state()
        self.update_window_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 get_menu(self):
        return self._menu

    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_window_handles(self):
        """ Tell WindowManipulator about the active resize/move handles """
        self.set_drag_handles(config.icp.window_handles)

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

    def _on_button_press_event(self, widget, event):
        if event.window == self.get_window():
            if Gdk.Event.triggers_context_menu(event):
                self._menu.popup(event.button, event.get_time())

            elif event.button == Gdk.BUTTON_PRIMARY:
                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 True

    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 True

    def _on_button_release_event(self, widget, event):
        """
        Save the window geometry, hide the IconPalette and
        emit the "activated" signal.
        """
        if event.window == self.get_window():
            if event.button == 1 and \
               event.window == self.get_window() and \
               not self.is_drag_active():
                self.emit("activated")

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

        return True

    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, widget.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()

        composited = Gdk.Screen.get_default().is_composited()
        if composited:
            cr.push_group()

        # 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:
            # take dwell color from the first icon "key"
            key = RectKey("icon0")
            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)

        if composited:
            cr.pop_group_to_source()
            cr.paint_with_alpha(self.OPACITY)

        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_all(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, max(co.width, 10), max(co.height, 10))
        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