PyGobject（七十七）Gtk.Widget之Gtk.Switch

Gtk.Switch

Gtk.Switch开关按钮，只有开和关两种状态，可通过点击或者左右拖动来切换状态。

Methods

方法修饰词	方法名及参数
static	new ()
	get_active ()
	get_state ()
	set_active (is_active)
	set_state (state)

Virtual Methods

do_activate ()
do_state_set (state)

Properties

Name	Type	Flags	Short Description
active	bool	r/w/en	Whether the switch is on or off
state	bool	r/w/en	The backend state

Signals

Name	Short Description
activate	The ::activate signal on Gtk.Switch is an action signal and emitting it causes the switch to animate.
state-set	The ::state-set signal on Gtk.Switch is emitted to change the underlying state.

例子

代码：

#!/usr/bin/env python3
# Created by xiaosanyu at 16/6/14
# section 121
TITLE = "Switch"
DESCRIPTION = """
Gtk.Switch is a widget that has two states: on or off.
The user can control which state should be active by clicking the empty area, or by dragging the handle.
"""
import gi

gi.require_version('Gtk', '3.0')
from gi.repository import Gtk


class SwitcherWindow(Gtk.Window):
    def __init__(self):
        Gtk.Window.__init__(self, title="Switch Demo")
        self.set_border_width(10)

        hbox = Gtk.Box(spacing=6)
        self.add(hbox)

        switch = Gtk.Switch()
        switch.connect("notify::active", self.on_switch_activated)
        switch.set_active(False)
        hbox.pack_start(switch, True, True, 0)

        switch = Gtk.Switch()
        switch.connect("notify::active", self.on_switch_activated)
        switch.set_active(True)
        hbox.pack_start(switch, True, True, 0)

    @staticmethod
    def on_switch_activated(switch, gparam):
        if switch.get_active():
            state = "on"
        else:
            state = "off"
        print("Switch was turned", state)


def main():
    win = SwitcherWindow()
    win.connect("delete-event", Gtk.main_quit)
    win.show_all()
    Gtk.main()


if __name__ == "__main__":
    main()

代码下载地址：http://download.youkuaiyun.com/detail/a87b01c14/9594728