PyGobject（四十五）布局容器之Grid

GtkGrid布局详解

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#Python #PyGobject #gtk+ #Grid #布局容器

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本文介绍GtkGrid容器，一种用于组织子部件成行和列的布局方式。详细解释了其继承关系、方法、属性和信号等内容，并通过实例展示了如何使用Python进行GtkGrid布局。

GtkGrid
附录
- GtkPositionType

Gtk.Grid

网格布局容器

继承关系

Gtk.Grid是Gtk.Container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 ()
	attach (child, left, top, width, height)
	attach_next_to (child, sibling, side, width, height)
	get_baseline_row ()
	get_child_at (left, top)
	get_column_homogeneous ()
	get_column_spacing ()
	get_row_baseline_position (row)
	get_row_homogeneous ()
	get_row_spacing ()
	insert_column (position)
	insert_next_to (sibling, side)
	insert_row (position)
	remove_column (position)
	remove_row (position)
	set_baseline_row (row)
	set_column_homogeneous (homogeneous)
	set_column_spacing (spacing)
	set_row_baseline_position (row, pos)
	set_row_homogeneous (homogeneous)
	set_row_spacing (spacing)

attach(child, left, top, width, height)

Parameters:
    child (Gtk.Widget) –要添加的子部件
    left (int) – 子部件左侧部件的个数，left=0表示当前部件位于第一列，以此类推
    top (int) – 子部件上方的行数，top=0表示当前部件位于第一行，以此类推
    width (int) – 子部件横跨的列数
    height (int) – 子部件横跨的行数

attach_next_to (child, sibling, side, width, height)

Parameters:
    child (Gtk.Widget) –要添加的子部件
    sibling (Gtk.Widget) – 子部件要相邻的部件，如果为None，子部件要位于行开始或者结束的位置
    side (Gtk.PositionType) – 子部件与sibling部件的位置关系
    width (int) – 子部件横跨的列数
    height (int) – 子部件横跨的行数

Virtual Methods

Properties

Name	Type	Flags	Short Description
baseline-row	int	r/w/en	The row to align the to the baseline when valign is Gtk.Align.BASELINE
column-homogeneous	bool	r/w/en	列宽是否相同
column-spacing	int	r/w/en	列间距
row-homogeneous	bool	r/w/en	行高是否相同
row-spacing	int	r/w/en	行间距

Signals

Name	Short Description

例子

这里写图片描述
代码：

#!/usr/bin/env python3
# Created by xiaosanyu at 16/6/13
# section 062
TITLE = "Grid"
DESCRIPTION = """
Gtk.Grid is a container which arranges its child widgets in rows and columns.
"""
import gi

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


class GridWindow(Gtk.Window):
    def __init__(self):
        Gtk.Window.__init__(self, title="Grid Example")
        grid = Gtk.Grid()
        self.add(grid)

        button1 = Gtk.Button(label="Button 1")
        button2 = Gtk.Button(label="Button 2")
        button3 = Gtk.Button(label="Button 3")
        button4 = Gtk.Button(label="Button 4")
        button5 = Gtk.Button(label="Button 5")
        button6 = Gtk.Button(label="Button 6")
        grid.add(button1)
        grid.attach(button2, 1, 0, 2, 1)
        grid.attach_next_to(button3, button1, Gtk.PositionType.BOTTOM, 1, 2)
        grid.attach_next_to(button4, button3, Gtk.PositionType.RIGHT, 2, 1)
        grid.attach(button5, 1, 2, 1, 1)
        grid.attach_next_to(button6, button5, Gtk.PositionType.RIGHT, 1, 1)


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


if __name__ == "__main__":
    main()

代码解析:

grid = Gtk.Grid()
self.add(grid)

创建一个Gtk.Grid,添加到当前窗口中
接着创建6个Gtk.Button

grid.add(button1)

使用Gtk.Container.add（）方法添加button1到grid中

grid.attach(button2, 1, 0, 2, 1)

使用attach方法添加button2，位于第二列第一行，横跨两列一行

grid.attach_next_to(button3, button1, Gtk.PositionType.BOTTOM, 1, 2)

使用attach_next_to方法添加button3，位于button1的下方，横跨一列两行

grid.attach_next_to(button4, button3, Gtk.PositionType.RIGHT, 2, 1)

使用attach_next_to方法添加button4，位于button3的右方，横跨两列一行

grid.attach(button5, 1, 2, 1, 1)

使用attach方法添加button5，位于第二列第三行，占一列一行

grid.attach_next_to(button6, button5, Gtk.PositionType.RIGHT, 1, 1)

使用attach_next_to方法添加button6，位于button5的右方，占一列一行

附录

Gtk.PositionType

class Gtk.PositionType
Bases: GObject.GEnum

LEFT = 0

The feature is at the left edge.

RIGHT = 1

The feature is at the right edge.

TOP = 2

The feature is at the top edge.

BOTTOM = 3

The feature is at the bottom edge.

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