emoji_picker.py 文件源码

def on_font_button_clicked(self, dummy_button):
        '''
        The font button in the header bar has been clicked

        :param dummy_button: The font button
        :type dummy_button: Gtk.Button object
        '''
        if _ARGS.debug:
            sys.stdout.write(
                'on_font_button_clicked()\n')
        self._font_popover = Gtk.Popover()
        self._font_popover.set_relative_to(self._font_button)
        self._font_popover.set_position(Gtk.PositionType.BOTTOM)
        self._font_popover.set_vexpand(True)
        font_popover_vbox = Gtk.VBox()
        margin = 12
        font_popover_vbox.set_margin_start(margin)
        font_popover_vbox.set_margin_end(margin)
        font_popover_vbox.set_margin_top(margin)
        font_popover_vbox.set_margin_bottom(margin)
        font_popover_vbox.set_spacing(margin)
        font_popover_label = Gtk.Label()
        font_popover_label.set_text(_('Set Font'))
        font_popover_label.set_visible(True)
        font_popover_label.set_halign(Gtk.Align.FILL)
        font_popover_vbox.pack_start(
            font_popover_label, False, False, 0)
        font_popover_search_entry = Gtk.SearchEntry()
        font_popover_search_entry.set_can_focus(True)
        font_popover_search_entry.set_visible(True)
        font_popover_search_entry.set_halign(Gtk.Align.FILL)
        font_popover_search_entry.set_hexpand(False)
        font_popover_search_entry.set_vexpand(False)
        font_popover_search_entry.connect(
            'search_changed', self.on_font_search_entry_search_changed)
        font_popover_vbox.pack_start(
            font_popover_search_entry, False, False, 0)
        self._font_popover_scroll = Gtk.ScrolledWindow()
        self._fill_listbox_font('')
        font_popover_vbox.pack_start(
            self._font_popover_scroll, True, True, 0)
        self._font_popover.add(font_popover_vbox)
        if GTK_VERSION >= (3, 22, 0):
            self._font_popover.popup()
        self._font_popover.show_all()