私はこれとまったく同じことをしたいのですが、すべての JButton インスタンスではなく、必要な 1 つまたは 2 つのボタンに対してのみカスタムグラデーションを設定します。そして、それを動的に設定/設定解除します-ボタンの選択/選択解除モードのようなもの。
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5163 次
2 に答える
2
だから、ここに答えがあります。
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
class JGradientButton extends JButton{
Color color1 = Color.WHITE;
Color color2 = Color.PINK;
JGradientButton(){
super("Gradient Button");
setContentAreaFilled(false);
setFocusPainted(false); // used for demonstration
addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent evt) {
color2 = (color2==Color.PINK) ? Color.GREEN : Color.PINK;
//System.out.println(button.isSelected());
}
});
}
@Override
protected void paintComponent(Graphics g){
Graphics2D g2 = (Graphics2D)g.create();
g2.setPaint(new GradientPaint(
new Point(0, 0),
color1,
new Point(0, getHeight()),
color2));
g2.fillRect(0, 0, getWidth(), getHeight());
g2.dispose();
super.paintComponent(g);
}
}
と...
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public final class JGradientButtonDemo {
public static void main(String[] args){
SwingUtilities.invokeLater(new Runnable(){
@Override
public void run() {
createAndShowGUI();
}
});
}
private static void createAndShowGUI(){
final JFrame frame = new JFrame("Gradient JButton Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new FlowLayout());
frame.add(new JGradientButton());
frame.setSize(new Dimension(300, 150)); // used for demonstration
//frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
于 2012-10-05T17:40:03.097 に答える
1
scythargon の回答を修正し、シンプルで高度なグラデーション ボタンを作成しました。
import java.awt.*;
import javax.swing.*;
public class ButtonGradientTest {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
createAndShowGUI();
}
});
}
protected static void createAndShowGUI() {
JFrame frame = new JFrame("Button Color Test");
JPanel panel1 = new JPanel(new FlowLayout());
JPanel panel2 = new JPanel(new FlowLayout());
JButton button1 = new JGradientButtonSimple("Simple", Color.RED, Color.ORANGE);
JButton button2 = new JGradientButton("Advanced", Color.GREEN, Color.BLUE);
button1.setPreferredSize(new Dimension(100, 100));
button1.setForeground(Color.YELLOW);
button2.setPreferredSize(new Dimension(100, 100));
button2.setForeground(Color.MAGENTA);
panel1.add(button1);
panel2.add(button2);
frame.add(panel1, BorderLayout.WEST);
frame.add(panel2, BorderLayout.EAST);
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
シンプルグラデーション
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
public class JGradientButtonSimple extends JButton {
private static final long serialVersionUID = 1L;
private Color stopTop;
private Color stopBottom;
private Paint colorGradient;
private Point[] stopPoints = new Point[2];
public JGradientButtonSimple(Color stopTop, Color stopBottom) {
this("", stopTop, stopBottom);
}
public JGradientButtonSimple(String text, Color stopTop, Color stopBottom) {
this(text, null, stopTop, stopBottom);
}
public JGradientButtonSimple(String text, Icon icon, Color stopTop, Color stopBottom) {
super(text, icon);
setContentAreaFilled(false);
setFocusPainted(false);
this.stopTop = stopTop;
this.stopBottom = stopBottom;
addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
invalidate();
}
});
}
public void invalidate() {
super.invalidate();
stopPoints[0] = new Point(0, 0);
stopPoints[1] = new Point(0, getHeight());
if (getModel().isPressed()) {
colorGradient = new GradientPaint(stopPoints[0], stopBottom, stopPoints[1], stopTop);
} else {
colorGradient = new GradientPaint(stopPoints[0], stopTop, stopPoints[1], stopBottom);
}
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setPaint(colorGradient);
g2.fillRect(0, 0, getWidth(), getHeight());
g2.dispose();
super.paintComponent(g);
}
}
高度なグラデーション
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
public class JGradientButton extends JButton {
private static final long serialVersionUID = 1L;
private Color[] stops = new Color[2];
private Paint colorGradients[] = new Paint[2];
private Point[] stopPoints = new Point[3];
public JGradientButton(Color stopTop, Color stopBottom) {
this("", stopTop, stopBottom);
}
public JGradientButton(String text, Color stopTop, Color stopBottom) {
this(text, null, stopTop, stopBottom);
}
public JGradientButton(String text, Icon icon, Color stopTop, Color stopBottom) {
super(text, icon);
setContentAreaFilled(false);
setFocusPainted(false);
stops[0] = stopTop;
stops[1] = stopBottom;
addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
invalidate();
}
});
}
public void invalidate() {
super.invalidate();
stopPoints[0] = new Point(0, 0);
stopPoints[1] = new Point(0, (int) (getHeight() * 0.33));
stopPoints[2] = new Point(0, (int) (getHeight() * 1.00));
int stop = getModel().isPressed() ? 1 : 0;
Color highlight = stop == 0 ? Color.WHITE : Color.BLACK;
colorGradients[0] = new GradientPaint(stopPoints[0], stops[stop], stopPoints[1], highlight);
colorGradients[1] = new GradientPaint(stopPoints[1], highlight, stopPoints[2], stops[1 - stop]);
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g.create();
for (int i = 0, offset = getHeight() / stopPoints.length; i < colorGradients.length; i++) {
g2.setPaint(colorGradients[i]);
g2.fillRect(0, i * offset, getWidth(), getHeight() - (i * offset));
}
g2.dispose();
super.paintComponent(g);
}
}
于 2017-02-02T16:48:52.830 に答える