哎呀..我那个近视啊...近视的我快连1厘米进的电脑屏幕上的字都看不清了..
怎么办呢??当然是用放大镜啦~~~~~~ 摄影机 !!向我这看!!
效果图:
开始代码啦:
package Magnifier;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Magnifier extends JFrame
{
private Container container = getContentPane();
private int setCoordinateX;
private int setCoordinateY;
private int absoluteCoordinateX;
private int absoluteCoordinateY;
private int relativeCoordinateXWhenMousePressed;
private int relativeCoordinateYWhenMousePressed;
//标记鼠标是否按下。如果按下则为true，否则为false
private boolean mousePressedNow;
// 放大镜尺寸
private int magnifierSize = 300;
//放大镜内容面板
private MagnifierPanel magnifierPanel = new MagnifierPanel(magnifierSize);
//这个窗体就是放大镜 你可以自己更改这个窗体..
public Magnifier()
{
setUndecorated(true); // 这个就是窗口的边缘 false的话就失效果了
setResizable(false);
container.add(magnifierPanel);
addMouseListener(new MouseFunctions());
addMouseMotionListener(new MouseMotionFunctions());
updateSize(magnifierSize);
this.setVisible(true);
}
public static void main(String arg[])
{
// JFrame
Magnifier magnifier = new Magnifier();
magnifier.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void updateSize(int magnifierSize)
{
magnifierPanel.setMagnifierSize(magnifierSize + 100);
setSize(magnifierSize + 100, magnifierSize + 100);
validate();
}
private class MouseFunctions extends MouseAdapter
{
public void mousePressed(MouseEvent e)
{
if (e.getClickCount() == 1)
{// 如果鼠标左键点了一下，说明按住了窗体
mousePressedNow = true;
relativeCoordinateXWhenMousePressed = e.getX();
relativeCoordinateYWhenMousePressed = e.getY();
}
}
public void mouseReleased(MouseEvent e)
{
mousePressedNow = false;
}
}
private class MouseMotionFunctions extends MouseMotionAdapter
{
public void mouseDragged(MouseEvent e)
{
if (mousePressedNow == true)
{// 如果此时鼠标按下了，说明在拖拽窗体
absoluteCoordinateX = Magnifier.this
.getLocationOnScreen().x
+ e.getX();
absoluteCoordinateY = Magnifier.this
.getLocationOnScreen().y
+ e.getY();
setCoordinateX = absoluteCoordinateX
- relativeCoordinateXWhenMousePressed;
setCoordinateY = absoluteCoordinateY
- relativeCoordinateYWhenMousePressed;
magnifierPanel.setMagnifierLocation(setCoordinateX,
setCoordinateY);
setLocation(setCoordinateX, setCoordinateY);
}
}
}
}
class MagnifierPanel extends JPanel
{
private Image screenImage;
private int magnifierSize;
private int locationX;
private int locationY;
private Robot robot;
public MagnifierPanel(int magnifierSize)
{
try
{
robot = new Robot();
}
catch (AWTException e){
}
screenImage = robot.createScreenCapture(new Rectangle(0, 0, Toolkit
.getDefaultToolkit().getScreenSize().width, Toolkit
.getDefaultToolkit().getScreenSize().height));
this.magnifierSize = magnifierSize;
}
public void setMagnifierLocation(int locationX, int locationY)
{
//X坐标
this.locationX = locationX;
//Y坐标
this.locationY = locationY;
repaint(); // 注意重画控件
}
public void setMagnifierSize(int magnifierSize)
{
this.magnifierSize = magnifierSize;
}
public void paintComponent(Graphics g)
{
super.paintComponent((Graphics2D) g);
// 关键处理代码
g.drawImage(
screenImage, // 要画的图片
0, // 目标矩形的第一个角的x坐标
0, // 目标矩形的第一个角的y坐标
magnifierSize, // 目标矩形的第二个角的x坐标
magnifierSize, // 目标矩形的第二个角的y坐标
locationX + (magnifierSize / 4), // 源矩形的第一个角的x坐标
locationY + (magnifierSize / 4), // 源矩形的第一个角的y坐标
locationX + (magnifierSize / 4 * 3), // 源矩形的第二个角的x坐标
locationY + (magnifierSize / 4 * 3), // 源矩形的第二个角的y坐标
this
);
}
}