main_window.py 文件源码

def __init__(self):
        self.placeholder_image = Gtk.Image.new_from_icon_name(
            Gtk.STOCK_MEDIA_PLAY, Gtk.IconSize.DIALOG)
        self.new_feed_button = Gtk.Button("New Feed")

        self.new_feed_vbox = Gtk.Box(Gtk.Orientation.VERTICAL)
        self.new_feed_vbox.set_halign(Gtk.Align.CENTER)
        self.new_feed_vbox.set_valign(Gtk.Align.CENTER)
        _pack_widgets(self.new_feed_vbox,
                      self.placeholder_image,
                      self.new_feed_button)