沒有空白區(qū)域的GUI顯得“擁擠”。如何在不借助明確設(shè)置組件的位置或大小的情況下提供空白區(qū)域？
4 回答
Helenr
TA貢獻(xiàn)1780條經(jīng)驗 獲得超4個贊
MigLayout有多種創(chuàng)造空間的方式。（在此布局中，空間稱為間隙。）可以使用布局約束在最高級別創(chuàng)建間隙，可以在行和列之間創(chuàng)建間隙，也可以在具有組件約束的各個組件之間設(shè)置間隙。在名為insets的容器的邊界周圍也存在特定的間隙，這些容器具有自己的特定關(guān)鍵字。
以下示例創(chuàng)建所有這些類型的差距：
package com.zetcode;
import java.awt.EventQueue;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import net.miginfocom.swing.MigLayout;
public class MigLayoutGaps2 extends JFrame {
public MigLayoutGaps2() {
initUI();
setTitle("Gaps");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
}
private void initUI() {
JPanel base = new JPanel(new MigLayout("flowy, ins 30, gap 15"));
setContentPane(base);
JPanel pnl1 = new JPanel();
pnl1.setBorder(
BorderFactory.createTitledBorder("Grid gaps")
);
pnl1.setLayout(new MigLayout("gap 5 5, ins 10, wrap 3"));
pnl1.add(new JButton("1"));
pnl1.add(new JButton("2"));
pnl1.add(new JButton("3"));
pnl1.add(new JButton("4"));
pnl1.add(new JButton("5"));
pnl1.add(new JButton("6"));
JPanel pnl2 = new JPanel();
pnl2.setBorder(
BorderFactory.createTitledBorder("Column gaps")
);
pnl2.setLayout(new MigLayout("wrap 3", "[]10[]"));
JLabel lbl1 = new JLabel();
lbl1.setBorder(
BorderFactory.createEtchedBorder()
);
JLabel lbl2 = new JLabel();
lbl2.setBorder(
BorderFactory.createEtchedBorder()
);
JLabel lbl3 = new JLabel();
lbl3.setBorder(
BorderFactory.createEtchedBorder()
);
pnl2.add(lbl1, "w 40, h 110");
pnl2.add(lbl2, "w 40, h 110");
pnl2.add(lbl3, "w 40, h 110");
JPanel pnl3 = new JPanel();
pnl3.setBorder(
BorderFactory.createTitledBorder("Row gaps")
);
pnl3.setLayout(new MigLayout("wrap", "", "[]15[]"));
JLabel lbl4 = new JLabel();
lbl4.setBorder(
BorderFactory.createEtchedBorder()
);
JLabel lbl5 = new JLabel();
lbl5.setBorder(
BorderFactory.createEtchedBorder()
);
JLabel lbl6 = new JLabel();
lbl6.setBorder(
BorderFactory.createEtchedBorder()
);
pnl3.add(lbl4, "w 150, h 20");
pnl3.add(lbl5, "w 150, h 20");
pnl3.add(lbl6, "w 150, h 20");
JPanel pnl4 = new JPanel();
pnl4.setBorder(
BorderFactory.createTitledBorder("Component gaps")
);
pnl4.setLayout(new MigLayout());
pnl4.add(new JLabel("Name:"), "gapright 5");
pnl4.add(new JTextField(10), "gapbottom 20, gaptop 20");
base.add(pnl1);
base.add(pnl2);
base.add(pnl3);
base.add(pnl4);
pack();
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
MigLayoutGaps2 ex = new MigLayoutGaps2();
ex.setVisible(true);
}
});
}
}
我們在布局中有四個面板。每個小組都有一名MigLayout經(jīng)理。
JPanel base = new JPanel(new MigLayout("flowy, ins 30, gap 15"));
此行創(chuàng)建容器插圖和面板之間的垂直間隙。
pnl1.setLayout(new MigLayout("gap 5 5, ins 10, wrap 3"));
在這里，我們?yōu)檎麄€網(wǎng)格結(jié)構(gòu)應(yīng)用間隙，并設(shè)置容器間隙。
pnl2.setLayout(new MigLayout("wrap 3", "[]10[]"));
此行會在列之間創(chuàng)建間隙。
pnl3.setLayout(new MigLayout("wrap", "", "[]15[]"));
使用此代碼定義行間隙。
pnl4.add(new JLabel("Name:"), "gapright 5");
pnl4.add(new JTextField(10), "gapbottom 20, gaptop 20");
最后，可以在各個組件之間創(chuàng)建間隙。
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