PyGobject（四十八）布局容器之HeaderBar

Gtk.HeaderBar

Gtk.HeaderBar标题栏

继承关系

Gtk.HeaderBar是Gtk.Container的直接子类

Methods

方法修饰词 方法名及参数 static new () get_custom_title () get_decoration_layout () get_has_subtitle () get_show_close_button () get_subtitle () get_title () pack_end (child) pack_start (child) set_custom_title (title_widget) set_decoration_layout (layout) set_has_subtitle (setting) set_show_close_button (setting) set_subtitle (subtitle) set_title (title)

Virtual Methods

Properties

Name Type Flags Short Description custom-title Gtk.Widget r/w Custom title widget to display decoration-layout str r/w 定义布局方式，见例子 decoration-layout-set bool r/w Whether the decoration-layout property has been set has-subtitle bool r/w/en 是否预留空间放置子标题 show-close-button bool r/w/en 是否显示关闭按钮 spacing int r/w/en 子部件间距 subtitle str r/w 子标题 title str r/w 标题

Signals

Name Short Description

例子

代码：

#!/usr/bin/env python3# Created by xiaosanyu at 16/6/13# section 065TITLE = "HeaderBar"DESCRIPTION = """Gtk.HeaderBar is similar to a horizontal Gtk.Box. It allows children to be placed at the start or the end.In addition, it allows a title and subtitle to be displayed."""import osimport gigi.require_version('Gtk', '3.0')from gi.repository import Gtk, Gio, GdkPixbufclass HeaderBarWindow(Gtk.Window):    def __init__(self):        Gtk.Window.__init__(self, title="HeaderBar Demo")        self.set_border_width(10)        self.set_default_size(400, 200)        # set logo
        icon = GdkPixbuf.Pixbuf.new_from_file(os.path.join(os.path.dirname(__file__), "../Data/gtk-logo-rgb.gif"))        # transparent
        icon = icon.add_alpha(True, 0xff, 0xff, 0xff)        self.set_default_icon(icon)        hb = Gtk.HeaderBar()        hb.set_decoration_layout("icon,menu:minimize,maximize,close")        hb.set_show_close_button(True)        hb.props.title = "HeaderBar example"        hb.set_subtitle("(subtitle)")        self.set_titlebar(hb)        button = Gtk.Button()        icon = Gio.ThemedIcon(name="mail-send-receive-symbolic")        image = Gtk.Image.new_from_gicon(icon, Gtk.IconSize.BUTTON)        button.add(image)        hb.pack_end(button)        box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)        Gtk.StyleContext.add_class(box.get_style_context(), "linked")        button = Gtk.Button()        button.add(Gtk.Arrow(arrow_type=Gtk.ArrowType.LEFT, shadow_type=Gtk.ShadowType.NONE))        box.add(button)        button = Gtk.Button()        button.add(Gtk.Arrow(arrow_type=Gtk.ArrowType.RIGHT, shadow_type=Gtk.ShadowType.NONE))        box.add(button)        hb.pack_start(box)        self.add(Gtk.TextView())def main():    win = HeaderBarWindow()    win.connect("delete-event", Gtk.main_quit)    win.show_all()    Gtk.main()if __name__ == "__main__":    main()

代码解析
设置窗口默认图标

# set logo
icon = GdkPixbuf.Pixbuf.new_from_file(os.path.join(os.path.dirname(__file__), "../Data/gtk-logo-rgb.gif"))# transparent
icon = icon.add_alpha(True, 0xff, 0xff, 0xff)self.set_default_icon(icon)

hb = Gtk.HeaderBar()

创建Gtk.HeaderBar

hb.set_decoration_layout("icon,menu:minimize,maximize,close")

设置布局方式，名称中间用逗号分隔，冒号用来分隔左右两部分
最左边是图标（icon），中间是自定义的区域（menu），后面是最小化最大化和关闭按钮（minimize,maximize,close”），顺序可以任意调换

剩下一段代码主要讲解一下以下两句

box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)Gtk.StyleContext.add_class(box.get_style_context(), "linked")

设置Box的样式为”linked”,这样，box中的子部件之间间距为0，而且子部件接触的地方没有圆角弧度之类的。

代码下载地址：http://download.csdn.net/detail/a87b01c14/9594728