如何使用ImageIcon完全填充JButton的表面？ [英] How to fill the surface of the JButton completely with an ImageIcon?

问题描述

我试图用ImageIcon完全填充Jbutton的表面。我到目前为止的结果是：

Ive tried to fill the "surface" of the Jbutton completely with an ImageIcon. My result so far is:

正如您所看到的，退出标签的边缘与按钮的边缘之间仍有一些空间。您可以在背景中看到带有白蓝色填充的按钮。我想要的是完全用标签覆盖这个按钮。

As you can see there is still some space between the edge of the "Exit"-Label and the edge of the button. You can see the button with the white-blue filling at the background. What I want is to cover this button COMPLETELY with the label.

有没有办法做到这一点？

Is there a way to do that?

这是我的代码：

    package footballQuestioner;

import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;



public class Beiexamples {

    public static void main(String[] args) {

        JFrame frame = new MyFrame();

    }

}

class MyFrame extends JFrame {

        BufferedImage image;
        JLabel label;

    public MyFrame() {

        setLayout(new GridBagLayout());
        JPanel panel=new JPanel(new BorderLayout());
        Font font = new Font("Rockwell Extra Bold", Font.PLAIN, 25);
        JButton button1=new JButton();

        image=getBufferedImage("footballQuestioner/ExitButtonLabel.png");
        image=getScaledImage(250, 100, image);

        label=new JLabel(new ImageIcon(image));


        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setSize(750,300);


        button1.setForeground(Color.YELLOW);
//      button1.setBackground(new Color(0,100,0));
        button1.setFocusPainted(true);
        button1.setIcon(new ImageIcon(image));
        button1.setBorder(BorderFactory.createEmptyBorder());

        add(button1);

        pack();
        centeringWindow();
        setVisible(true);
    }


    public void centeringWindow() {
        Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
        int x;
        int y;

        x = (int) (dimension.getWidth() - getWidth()) / 2;
        y = (int) (dimension.getHeight() - getHeight()) / 2;

        setLocation(x, y);
    }

    public BufferedImage getBufferedImage(String pathName) {

        try {
            image = ImageIO.read(Beispielfenster.class.getClassLoader()
                    .getResourceAsStream(pathName));
        } catch (IOException e) {
            e.printStackTrace();
        }

        return image;

    }

    public BufferedImage getScaledImage(int width, int height,
            BufferedImage orginalImage) {

        BufferedImage image = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D g = image.createGraphics();

        // 2. Use the Graphic object to draw a new image to the image in the
        // buffer
        g.setComposite(AlphaComposite.Clear);
        g.fillRect(0, 0, width, height);
        g.setComposite(AlphaComposite.SrcOver);
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);
        g.drawImage(orginalImage, 0, 0, width, height, null);

        g.dispose();

        return image;

        // Image image=orginalImage.getImage();
        // Image newImage=image.getScaledInstance(width,height,
        // Image.SCALE_SMOOTH);
        // ImageIcon imageIcon=new ImageIcon(newImage);
        //
        // return imageIcon;
    }

}

推荐答案

您需要将边框设置为 EmptyBorder ，以便按钮内没有填充。

You need to set the border to EmptyBorder so there is no padding within your button.

添加：

button1.setBorder(BorderFactory.createEmptyBorder());

我的结果：

这篇关于如何使用ImageIcon完全填充JButton的表面？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！