PyGobject（八）布局容器之Button篇——Gtk.LinkButton

最新推荐文章于 2021-12-26 12:49:59 发布

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#Python #PyGobject #gtk+ #LinkButton #布局容器

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本文介绍Gtk.LinkButton组件的使用方法，包括其继承关系、方法、属性及信号等，并提供了一个用Python实现的例子，展示了如何创建链接按钮并处理链接点击事件。

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GtkLinkButton

Gtk.LinkButton

继承关系

Gtk.LinkButton是带有链接文本的按钮。Gtk.LinkButton是Gtk.Button的直接子类

这里写图片描述

Methods

方法修饰词	方法名及参数
static	new (uri)
static	new_with_label (uri, label)
	get_uri ()
	get_visited ()
	set_uri (uri)
	set_visited (visited)

Virtual Methods


do_activate_link ()

Properties

Name	Type	Flags	Short Description
uri	str	r/w	当前button所绑定的uri
visited	bool	r/w/en	这个链接是否被访问过

Signals

Name	Short Description
activate-link	::activate-link 每当链接被点击时，发送此信号.

例子

这里写图片描述
代码：

#!/usr/bin/env python3
# Created by xiaosanyu at 16/6/14
# section 009
TITLE = "LinkButton"
DESCRIPTION = """
A Gtk.LinkButton is a Gtk.Button with a hyperlink, similar to the one used by web browsers,
which triggers an action when clicked.
It is useful to show quick links to resources.

The ::activate-link signal is emitted each time the Gtk.LinkButton has been clicked.

The default handler will call Gtk.show_uri() with the URI stored inside the Gtk.LinkButton :uri property.

To override the default behavior, you can connect to the ::activate-link signal
and stop the propagation of the signal by returning True from your handler.

you need to install gvfs to get support for uri schemes such as http:// or ftp://,
as only local files are handled by GIO itself
"""
import gi
import webbrowser

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


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

        # button = Gtk.LinkButton(uri="file:///Users/xiaosanyu/mydocbook/docbook.html", label="Visit GTK+ Homepage")
        button = Gtk.LinkButton(uri="http://www.gnome.org", label="Visit GTK+ Homepage")
        button.connect("activate-link", self.visit)
        self.add(button)

    def visit(self, btn):
        webbrowser.open(btn.get_uri())
        return True


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


if __name__ == "__main__":
    main()

创建一个Gtk.LinkButton，绑定“activate-link”信号到visit方法

button = Gtk.LinkButton(uri="http://www.gnome.org", label="Visit GTK+ Homepage")
        button.connect("activate-link", self.visit)
        self.add(button)

def visit(self, btn):
    webbrowser.open(btn.get_uri())
    return True

当点击链接时，执行visit方法，使用Python自带webbrowser模块打开URI。并且返回True。

说明：默认点击时如果报错
Unable to show ‘http://www.gnome.org‘: 不支持该操作
需要安装“gvfs”