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PyGobject（十五）布局容器之Button篇——Gtk.ScaleButton

2016-07-26 15:33 591 查看

GtkScaleButton
继承关系

Methods

Virtual Methods

Properties

Signals

例子

Gtk.ScaleButton

继承关系

Gtk.ScaleButton根据滑块位置，显示不同的图片。Gtk.ScaleButton是Gtk.Button的直接子类

Methods


方法修饰词	方法名及参数
static	new (size, min, max, step, icons)
	get_adjustment ()
	get_minus_button ()
	get_plus_button ()
	get_popup ()
	get_value ()
	set_adjustment (adjustment)
	set_icons (icons)
	set_value (value)

Virtual Methods



do_value_changed (value)

Properties


Name	Type	Flags	Short Description
adjustment	Gtk.Adjustment	r/w	ScaleButton值的范围
icons	[str]	r/w	List of icon names
size	Gtk.IconSize	r/w/en	The icon size
value	float	r/w/en	The value of the scale

Signals


Name	Short Description
popdown	The ::popdown signal is a keybinding signal which gets emitted to popdown the scale widget.
popup	The ::popup signal is a keybinding signal which gets emitted to popup the scale widget.
value-changed	The ::value-changed signal is emitted when the value field has changed.

例子

代码：

#!/usr/bin/env python3
# Created by xiaosanyu at 16/6/27
# section 016
TITLE = "ScaleButton"
DESCRIPTION = """
Gtk.ScaleButton provides a button which pops up a scale widget.
This kind of widget is commonly used for volume controls in multimedia applications,
and GTK+ provides a Gtk.VolumeButton subclass that is tailored for this use case.
"""
import gi

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

# 最高的图标要放在第二位
icons = ["microphone-sensitivity-muted-symbolic.symbolic", "microphone-sensitivity-high-symbolic.symbolic",
"microphone-sensitivity-low-symbolic.symbolic", "microphone-sensitivity-medium-symbolic.symbolic"]

class ScaleButtonWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="ScaleButton Demo")
self.set_border_width(10)
self.set_default_size(200, 300)
box = Gtk.Box()
sbtn = Gtk.ScaleButton(icons=icons)
sbtn.connect("value_changed", self.change)
box.add(sbtn)
self.add(box)

def change(self, btn, value):
# print(value)
pass

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

if __name__ == "__main__":
main()

分析主要代码

定义显示的图片名称列表，默认显示的放在第一个，最后显示的图片放第二个，其余依次排放

icons =
["microphone-sensitivity-muted-symbolic.symbolic",
"microphone-sensitivity-high-symbolic.symbolic",
"microphone-sensitivity-low-symbolic.symbolic", "microphone-sensitivity-medium-symbolic.symbolic"]

定义一个ScaleButton，指定其icons属性

sbtn = Gtk.ScaleButton(icons=icons)

绑定”value_changed”信号

sbtn.connect("value_changed", self.change)

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

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标签： Python PyGobject gtk+ ScaleButto 布局容器

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