Swing - 来自 Color 的新 ImageIcon

Question

我需要用简单的颜色（比如说蓝色）以编程方式创建一个ImageIcon：

所以我开始这样做了：

ImageIcon imageIcon = new ImageIcon();

现在我正在尝试用蓝色填充我的ImageIcon。

Answer 1

这应该可以解决问题

BufferedImage image = new BufferedImage(60, 60, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = image.createGraphics();

graphics.setPaint(new Color(0, 0, 128));
graphics.fillRect(0, 0, image.getWidth(), image.getHeight());

ImageIcon imageIcon = new ImageIcon(image);

Answer 2

这是一个例子

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.WindowConstants;

public class CreateImage {

    public static void main(String[] args) {
        JFrame frm = new JFrame("Test");
        frm.add(new JLabel(createImage(Color.BLUE, new Dimension(200, 100))));
        frm.pack();
        frm.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frm.setLocationRelativeTo(null);
        frm.setVisible(true);
    }

    public static Icon createImage(Color c, Dimension size) {
        BufferedImage img = new BufferedImage(size.width, size.height, BufferedImage.TYPE_INT_ARGB);
        Graphics g = img.createGraphics();
        g.setColor(c);
        g.fillRect(0, 0, size.width, size.height);
        return new ImageIcon(img);
    }
}

Answer 3

基于answer Lonely Neuron，我创建了一个方法来创建一个具有所需大小和Color的新ImageIcon：

public static ImageIcon createImageIcon(Color color, int width, int height) {
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    Graphics2D graphics = image.createGraphics();
    graphics.setPaint(color);
    graphics.fillRect (0, 0, width, height);
    return new ImageIcon(image);
}

这样称呼它：

ImageIcon imageIcon = createImageIcon(new Color(0, 0, 128), 60, 60);