Python gi.repository.Gtk 模块，Arrow() 实例源码

def __init__(self, default_value):
        Gtk.Box.__init__(self)
        self.m_value = mpd.notename_to_int(default_value)
        self.g_entry = Gtk.Entry()
        self.g_entry.set_editable(False)
        self.g_entry.set_text(mpd.int_to_user_octave_notename(self.m_value))
        self.pack_start(self.g_entry, False, False, 0)
        # up
        eb1 = Gtk.Button()
        eb1.add(Gtk.Arrow(Gtk.ArrowType.UP, Gtk.ShadowType.OUT))
        eb1.connect('button-press-event', self.on_up_press)
        eb1.connect('button-release-event', self.on_up_release)
        self.pack_start(eb1, True, True, 0)
        # down
        eb2 = Gtk.Button()
        eb2.add(Gtk.Arrow(Gtk.ArrowType.DOWN, Gtk.ShadowType.IN))
        eb2.connect('button-press-event', self.on_down_press)
        eb2.connect('button-release-event', self.on_down_release)
        self.pack_start(eb2, True, True, 0)
        self.m_timeout = None

def __on_right_arrow_clicked(self, button):
        """
        Handles Right Arrow clicked navigation event, moves one chapter to the right
        :param button:
        """
        self.__window.load_chapter(self.__window.content_provider.current_chapter + 1)

def __on_left_arrow_clicked(self, button):
        """
        Handles Left Arrow clicked navigation event, moves one chapter to the left
        :param button:
        """
        self.__window.load_chapter(self.__window.content_provider.current_chapter - 1)

def __init__(self, text, menu):
        GObject.GObject.__init__(self)
        self.menu = menu
        hbox1 = Gtk.HBox()
        hbox2 = Gtk.HBox()
        icon = Gtk.Image()
        icon.set_from_file(datafile_path('bokken-small.svg'))
        hbox1.pack_start(icon, True, True, 3)
        label = Gtk.Label()
        label.set_markup("<b>"+ text + "</b>")
        hbox1.pack_start(label, True, True, 3)
        arrow = Gtk.Arrow(Gtk.ArrowType.DOWN, Gtk.ShadowType.IN)
        hbox1.pack_start(arrow, False, False, 3)
        hbox2.pack_start(hbox1, True, True, 0)

        # MEOW Text settings
        #attrs = Pango.AttrList()
        #attrs.change(Pango.AttrWeight(Pango.Weight.SEMIBOLD, 0, -1))
        #label.set_attributes(attrs)

        self.add(hbox2)
        self.set_relief(Gtk.ReliefStyle.NORMAL)
        self.set_can_focus(True)
        self.set_can_default(False)
        self.connect("toggled", self.on_toggled)

        for sig in "selection-done", "deactivate", "cancel":
            menu.connect(sig, self.on_menu_dismiss)