问题描述
所以我用setShape(s);
制作了一个自定义形状的JFrame当我将JFrame设置为未修饰时,我想知道我是如何解决该问题的,因此无法用鼠标在屏幕上拖动框架,因此我尝试实现自己的可拖动框架,但它无法正常工作,这是Frame类:
so I made a custom shaped JFrame using setShape(s);
and I got it to look how I wanted the problem when you set the JFrame to be undecorated you can't drag the Frame with your mouse on the screen, so I tried to implement my own draggable frame, but it's not working as supposed to, here's the Frame class :
package rt;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.event.MouseEvent;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.event.MouseInputAdapter;
public class MyFrame extends JFrame{
private static final int WIDTH = 1024;
private static final int HEIGHT = 1024;
private static int [] OCTAGON_COORDS_X = {300, 524, 680, 680, 524, 300, 144, 144};
private static int [] OCTAGON_COORDS_Y = {300, 300, 457, 680, 836, 836, 680, 457};
public MyFrame() throws IOException {
// Determine what the default GraphicsDevice can support.
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd = ge.getDefaultScreenDevice();
boolean isUniformTranslucencySupported = gd.isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency.TRANSLUCENT);
boolean isShapedWindowSupported = gd.isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT);
if (isUniformTranslucencySupported && isShapedWindowSupported) {
setUndecorated(true);
setSize(WIDTH, HEIGHT);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
updateFrame();
//setOpacity(0.55f);
setVisible(true);
MyListener myListener = new MyListener();
addMouseListener(myListener);
addMouseMotionListener(myListener);
}
else {
System.err.println("Custom shaped JFrames and trunslucent JFrames are not supported by this device!");
System.exit(0);
}
}
public void updateFrame() {
Shape s = new Polygon (OCTAGON_COORDS_X, OCTAGON_COORDS_Y, OCTAGON_COORDS_X.length);
setShape(s);
}
private class MyListener extends MouseInputAdapter {
private int initialPressedX;
private int initialPressedY;
@Override
public void mousePressed(MouseEvent e) {
initialPressedX = e.getX();
initialPressedY = e.getY();
}
@Override
public void mouseDragged(MouseEvent e) {
updateFrameCoords(e);
}
void updateFrameCoords(MouseEvent e) {
int dx = e.getX() - initialPressedX;
int dy = e.getY() - initialPressedY;
for (int i = 0; i < OCTAGON_COORDS_X.length; i++) {
OCTAGON_COORDS_X[i] += dx;
OCTAGON_COORDS_Y[i] += dy;
}
updateFrame();
}
}
}
主类:
package rt;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
try {
MyFrame frame = new MyFrame();
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
但是拖动动作没有按我预期的那样工作,我猜问题出在这些行中:有人介意检查并解释我做错了什么以及如何解决吗?预先感谢!
But the dragging action isn't working as I expected I guess the problem lies in those lines :Anyone mind checking and explaining what I did wrong and how to fix it ?Thanks in advance !
推荐答案
我认为您的问题是在执行mouseDragged
时担心框架的形状.我认为您不必为此担心.
I think your problem is worrying about the shape of the frame when executing the mouseDragged
. I don't think you need to worry about that.
如果仅将方法更改为以下方法,则可以使用.进行测试.
If you just change your method to the below, it works. Test it out.
void updateFrameCoords(MouseEvent e) {
setLocation(getLocation().x + e.getX() - initialPressedX,
getLocation().y + e.getY() - initialPressedY);
}
这篇关于Java-自定义形状的可拖动JFrame的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!