我正在尝试创建一个包含JPanel的JFrame ，其中仅包含选择 RGB 颜色所需的内容。我一直在搞乱JColorChooser、AbstractColorChooserPanel和 ColorModel，阅读 Oracle 教程，但我不明白如何开发我想要的东西。我什至下载了 OpenJDK 源来获取这些类的源代码，但仍然没有。我想要得到的是：
Alpha 的东西应该消失，颜色代码字段应该设置为不可见但继续工作，这样我可以在单击“是”按钮时检索代码（我猜是在 actionPerformed 方法中）。重写paintComponent方法也是一个很好的补充。
提前致谢。
编辑：这就是我得到我目前拥有的东西的方式（上面的照片，没有“油漆”编辑）：
for (final AbstractColorChooserPanel accp : panels) {
if (accp.getDisplayName().equals("RGB")) {
JOptionPane.showOptionDialog(Main.frame, accp,
"Color selection tool", JOptionPane.OK_OPTION,
JOptionPane.QUESTION_MESSAGE, null, null, 0);
}
}
EDIT2：到目前为止，我现在已经能够删除 alpha 的东西，但我还不能“找到”显示颜色代码的标签和字段，所以它们继续显示，此外，因为我可以'无法访问该字段，我无法访问颜色代码：
这是与此代码：
package edu.utils;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JSpinner;
import javax.swing.WindowConstants;
import javax.swing.colorchooser.AbstractColorChooserPanel;
import edu.io.local.Log;
public final class RGBColorChooserPanel extends JDialog implements ActionListener {
private final JColorChooser jCC;
private final JPanel panel;
private String colorCode;
public RGBColorChooserPanel(final String title) {
super(edu.Main.frame);
this.setTitle(title);
this.jCC = new JColorChooser();
this.modifyJColorChooser();
this.panel = new JPanel() {
@Override
protected void paintComponent(final Graphics g) {
final Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
final GradientPaint gp = new GradientPaint(0, 0, Color.BLUE, 0, this.getHeight(),
Color.BLACK);
g2d.setPaint(gp);
g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
super.paintComponent(g);
}
};
this.panel.add(this.jCC);
this.panel.setOpaque(false);
this.jCC.setOpaque(false);
this.jCC.setPreviewPanel(new JPanel());
this.jCC.setColor(120, 20, 57);
this.add(this.panel, BorderLayout.CENTER);
this.setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
this.pack();
final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation((screenSize.width - this.getWidth()) / 2,
(screenSize.height - this.getHeight()) / 2);
this.setResizable(false);
this.setVisible(true);
}
@Override
public void actionPerformed(final ActionEvent e) {
// TODO Auto-generated method stub
}
private void modifyJColorChooser() {
final AbstractColorChooserPanel[] panels = this.jCC.getChooserPanels();
for (final AbstractColorChooserPanel accp : panels) {
if (!accp.getDisplayName().equals("RGB")) {
this.jCC.removeChooserPanel(accp);
}
}
final AbstractColorChooserPanel[] colorPanels = this.jCC.getChooserPanels();
final AbstractColorChooserPanel cp = colorPanels[0];
Field f = null;
try {
f = cp.getClass().getDeclaredField("panel");
} catch (NoSuchFieldException | SecurityException e) {
Log.log(e);
}
f.setAccessible(true);
Object colorPanel = null;
try {
colorPanel = f.get(cp);
} catch (IllegalArgumentException | IllegalAccessException e) {
Log.log(e);
}
Field f2 = null;
try {
f2 = colorPanel.getClass().getDeclaredField("spinners");
} catch (NoSuchFieldException | SecurityException e4) {
Log.log(e4);
}
f2.setAccessible(true);
Object rows = null;
try {
rows = f2.get(colorPanel);
} catch (IllegalArgumentException | IllegalAccessException e3) {
Log.log(e3);
}
final Object transpSlispinner = Array.get(rows, 3);
Field f3 = null;
try {
f3 = transpSlispinner.getClass().getDeclaredField("slider");
} catch (NoSuchFieldException | SecurityException e) {
Log.log(e);
}
f3.setAccessible(true);
JSlider slider = null;
try {
slider = (JSlider) f3.get(transpSlispinner);
} catch (IllegalArgumentException | IllegalAccessException e2) {
Log.log(e2);
}
slider.setVisible(false);
Field f4 = null;
try {
f4 = transpSlispinner.getClass().getDeclaredField("spinner");
} catch (NoSuchFieldException | SecurityException e1) {
Log.log(e1);
}
f4.setAccessible(true);
JSpinner spinner = null;
try {
spinner = (JSpinner) f4.get(transpSlispinner);
} catch (IllegalArgumentException | IllegalAccessException e) {
Log.log(e);
}
spinner.setVisible(false);
Field f5 = null;
try {
f5 = transpSlispinner.getClass().getDeclaredField("label");
} catch (NoSuchFieldException | SecurityException e1) {
Log.log(e1);
}
f5.setAccessible(true);
JLabel label = null;
try {
label = (JLabel) f5.get(transpSlispinner);
} catch (IllegalArgumentException | IllegalAccessException e) {
Log.log(e);
}
label.setVisible(false);
Field f6 = null;
try {
f6 = transpSlispinner.getClass().getDeclaredField("value");
} catch (NoSuchFieldException | SecurityException e1) {
Log.log(e1);
}
f6.setAccessible(true);
float value = 0;
try {
value = (float) f6.get(transpSlispinner);
} catch (IllegalArgumentException | IllegalAccessException e) {
Log.log(e);
}
}
}
PS：我知道异常处理的奇怪之处，但我需要管理每个语句的异常，所以请不要抱怨。