JFrame与模糊透明背景 [英] JFrame with blurred transparent background
问题描述
我想在JFrame的背景上做一个模糊，它是透明的，以显示它下面发生的事情，但我不知道如何模糊背景并避免闪烁。我想要实现的是透明的背景，模糊不清，但仍然显示其下方窗户的实时视图，而不是模糊的静态图片不会改变。
请记住，窗口可能需要全屏大小。
I would like to do a blur on the background of the JFrame which is transparent to show what is happening underneath it, but I have no idea how can I blur the background and avoid flickering. What I want to achieve is to have a transparent background which is slighlty blurred, but still shows "live view" of the windows underneath it, not to have a blurred static picture which doesn't change. Keep in mind that the window may take the size of full screen.
我希望我能正确描述它，因为我还是Java Graphics的初学者。
I hope I described it correctly, as I am still a beginner in Java Graphics.
代码中的透明框架：
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
public class BlurredBackgroundWindow {
public static void main(String[] args) {
new BlurredBackgroundWindow().drawGUI();
}
public void drawGUI() {
myJFrame frm = new myJFrame();
frm.setTitle("BlurredBackgroundWindow");
frm.setSize(480, 360);
frm.setUndecorated(true);
frm.setBackground(new Color(0,0,0,1));
frm.setLocationRelativeTo(null);
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setVisible(true);
}
class myJFrame extends JFrame {
public void paint(Graphics g) {
super.paint(g);
// Doing the rest of painting here
}
}
}
注意 - 框架是完全透明的，并且看到一些效果会将颜色更改为例如。
Note - The frame is completely transparent and to see some effect change the color to eg.
frm.setBackground(new Color(0,100,0,100));
感谢您的帮助
编辑1 ：
以下是我想要避免的闪烁效果，但我真的不知道如何...这只适用于全屏窗口。
EDIT 1: Here is the effect in action WITH the flickering which I want to avoid, but I don't really know how... This one works for a fullscreen window only.
import java.awt.AWTException;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ConvolveOp;
import java.awt.image.Kernel;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.JFrame;
public class BlurredBackgroundWindow {
public static int FPS = 2;
private BufferedImage temp = null;
private BufferedImage out = null;
private BufferedImage image = null;
myJFrame frm = new myJFrame();
public static void main(String[] args) {
new BlurredBackgroundWindow().drawGUI();
}
public void drawGUI() {
frm.setTitle("BlurredBackgroundWindow");
frm.setExtendedState(JFrame.MAXIMIZED_BOTH);
frm.setUndecorated(true);
frm.setBackground(new Color(0,0,0,1));
frm.setLocationRelativeTo(null);
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setVisible(true);
Timer bcg = new Timer();
bcg.schedule(new TimerTask() {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Rectangle screenRectangle = new Rectangle(screenSize);
Robot robot;
public void run() {
System.out.println("Repaint");
frm.repaint();
try {
robot = new Robot();
image = robot.createScreenCapture(screenRectangle);
} catch (AWTException e) {}
frm.repaint();
// Save the blurred image for debugging
/*try {
ImageIO.write(image, "png", new File("C:\\test.png"));
} catch (IOException e) {
e.printStackTrace();
}*/
}
}, 0, (int) (1000f/FPS));
}
class myJFrame extends JFrame {
public void paint(Graphics g) {
super.paint(g);
if(image != null) {
float[] matrix = {
0.111f, 0.111f, 0.111f,
0.111f, 0.111f, 0.111f,
0.111f, 0.111f, 0.111f,
};
BufferedImageOp op = new ConvolveOp( new Kernel(3, 3, matrix) );
temp = op.filter(image, out);
out = temp;
g.drawImage(out,0,0,null);
temp=null;out=null;image=null;
}
}
}
}
推荐答案
您可以使用以下代码中给出的略有不同的方式： -
You can use slightly different way as given in the following code :-
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsDevice.WindowTranslucency;
import java.awt.GraphicsEnvironment;
import java.awt.Paint;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class transparent extends JFrame {
public transparent() {
super("Transparent Window");
setBackground(new Color(0,0,0,0));
//setting it causes the frame to be transparent .Hence both panel and frame are transparent.
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(300,200);
getContentPane().setLayout(new FlowLayout());
JPanel jp=new JPanel(){
public void paintComponent(Graphics g)
{
//super.paintComponent(g);
Graphics2D g2=(Graphics2D)g;
Paint gp=new GradientPaint(0, 0, new Color(100,20,210,105), 0, 200, new Color(80,20,40,105));
g2.setPaint(gp);
g2.fillRect(0, 0, getWidth(),getHeight());
}
};
//setOpacity(0.6f);
setContentPane(jp);
JButton jbtn=new JButton("Enter");
jp.add(jbtn);
setVisible(true);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd=ge.getDefaultScreenDevice();
if(!gd.isWindowTranslucencySupported(WindowTranslucency.PERPIXEL_TRANSLUCENT))
{
System.out.println("Per-pixel Transency not supported");
System.exit(0);
}
JFrame.setDefaultLookAndFeelDecorated(true);
//setting it to true causes the look to be handled by look and feel. otherwise os look and feel is used
//In other words ,it is,modify default look and feel-yes or no?
SwingUtilities.invokeLater(new Runnable(){public void run(){new transparent();}});
}
/*public void paint(Graphics g)
{
super.paint(g);
Graphics2D g2=(Graphics2D)g;
GradientPaint gp=new GradientPaint(0, 0, new Color(20,20,210,30), 300, 200, new Color(10,20,40,255),true);
g2.setPaint(gp);
g2.fillRect(0, 0, getWidth(),getHeight());
}*/
}
这是获得的输出要好得多和玻璃： -
Here is the output obtained which is much better and glassy :-
这篇关于JFrame与模糊透明背景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IT屋！
