ToolTip 對 就是那家伙 丑的要命..一個方塊 里面幾個字 =.=..... 那不是我的作為!!我要將它帥起來!!
(本來打算明天更新的..被群里一位先生拼命的催啊催啊催....)
射像機! 鏡頭向我這里看齊!!!!
效果圖:
package ToolTip;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JToolTip;
//繼承自JToolTip
class CustomToolTip extends JToolTip 
{
public void paintComponent(Graphics g) {
//形狀 自己看著辦..自己覺的什么漂亮就用什么
Shape round = new RoundRectangle2D.Float(4,4,
this.getWidth( )-1-8,
this.getHeight( )-1-8,
15,15);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setColor(Color.white);
g2.fill(round);
g2.setColor(Color.gray);
g2.setStroke(new BasicStroke(5));
g2.draw(round);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_DEFAULT);
String text = this.getComponent( ).getToolTipText( );
if(text != null) {
FontMetrics fm = g2.getFontMetrics( );
int h = fm.getAscent( );
g2.setColor(Color.black);
g2.drawString(text,10,(this.getHeight( )+h)/2);
}
}
public Dimension getPreferredSize( ) {
Dimension dim = super.getPreferredSize( );
return new Dimension((int)dim.getWidth( )+20,
(int)dim.getHeight( )+20);
}
public CustomToolTip( ) {
super();
//不用介紹了,
this.setOpaque(false);
}
}
//用到時 就用這里 JButton jb = new CustomJButton ();
//可以自己更改 比如你不想要JButton 你想要JLabel 或者其他的 就 extends JLabel
// 然后 JLabel jl = new CustomJButton(); 當然 名字隨便你換不換..(換了比較規范)
public class CustomJButton extends JButton {
/** *//**
*
*/
private static final long serialVersionUID = 1L;
JToolTip _tooltip;
public CustomJButton(String string, ImageIcon icon) {
//傳入的JButton 字符串和JButton的Icon 如果不需要.可以直接刪掉
//或者自己在加一個無參數的方法..
super(string,icon);
_tooltip = new CustomToolTip( );
_tooltip.setComponent(this);
}
public JToolTip createToolTip( ) {
return _tooltip;
}
}
下面寫一個Main類來測試一下
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class ToolTipsHack {
public static void main(String[] args) {
JButton button;
JFrame frame = new JFrame("Tool Tips Hack");
BoxLayout layout = new BoxLayout(
frame.getContentPane( ),
BoxLayout.Y_AXIS);
frame.getContentPane( ).setLayout(layout);
button = new CustomJButton("啊啊",null );
button.setText("Open");
button.setToolTipText("相信牌ToolTip");
frame.getContentPane( ).add(button);
button = new CustomJButton("啊啊啊",null);
button.setText("Save");
button.setToolTipText("Save the currently open file");
frame.getContentPane( ).add(button);
frame.getContentPane( ).add(new JLabel("a label"));
frame.getContentPane( ).add(new JLabel("a label"));
frame.getContentPane( ).add(new JLabel("a label"));
frame.pack( );
frame.setVisible(true);//或者直接 frame.show( );
}
}