如何更改鼠标按下时的JButton颜色？

Question

我希望根据鼠标事件(鼠标进入,退出,按下等)获得自定义颜色.所以要做到这一点,我写了下面的代码.它对一切都很好,除了鼠标按下事件的情况,什么都不做.它只有当我覆盖在色彩的作品UIManager是这样UIManager.put("Button.select", Color.red);.问题UIManager是,它会改变我的所有按钮.

任何人都可以告诉我,我可能做错了什么,或者最好的方法是什么,我想要做什么？

我的代码:

final JButton btnSave = new JButton("Save");

btnSave.setForeground(new Color(0, 135, 200).brighter());
btnSave.setHorizontalTextPosition(SwingConstants.CENTER);
btnSave.setBorder(null);
btnSave.setBackground(new Color(3, 59, 90));

btnSave.addMouseListener(new MouseListener() {
    @Override
    public void mouseReleased(MouseEvent e) {
        btnSave.setBackground(new Color(3, 59, 90));
    }

    @Override
    public void mousePressed(MouseEvent e) {
        // Not working :(
        btnSave.setBackground(Color.pink);
    }

    @Override
    public void mouseExited(MouseEvent e) {
        btnSave.setBackground(new Color(3, 59, 90));
    }

    @Override
    public void mouseEntered(MouseEvent e) {
        btnSave.setBackground(new Color(3, 59, 90).brighter());
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        btnSave.setBackground(new Color(3, 59, 90).brighter());
    }
});

Edit1:所以,而不是鼠标监听器,我正在使用ChangeListener和ButtonModelmKorbel建议.使用此代码,我仍然没有观察到按钮上按下鼠标的任何更改,除非我按下并拖动按钮外部.有什么想法吗？

btnSave.getModel().addChangeListener(new ChangeListener() {

    @Override
    public void stateChanged(ChangeEvent e) {
        ButtonModel model = (ButtonModel) e.getSource();

        if (model.isRollover()) {
            btnSave.setBackground(new Color(3, 59, 90).brighter());
        } else if (model.isPressed()) {
            btnSave.setBackground(Color.BLACK);
        } else {
            btnSave.setBackground(new Color(3, 59, 90));
        }
    }
});

Answer 1

问题是由于JButton的内容区域默认填充,而金属L&F会在按下按钮时自动用内部选择的颜色填充它.

最好的办法是扩展JButton以创建自己的按钮,禁用填充的内容区域,并自己绘制按钮的背景.

这是一个小的演示(不确定它适用于其他L&F,甚至很确定它没有):

import java.awt.Color;
import java.awt.Graphics;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;

public class TestButton {

    class MyButton extends JButton {

        private Color hoverBackgroundColor;
        private Color pressedBackgroundColor;

        public MyButton() {
            this(null);
        }

        public MyButton(String text) {
            super(text);
            super.setContentAreaFilled(false);
        }

        @Override
        protected void paintComponent(Graphics g) {
            if (getModel().isPressed()) {
                g.setColor(pressedBackgroundColor);
            } else if (getModel().isRollover()) {
                g.setColor(hoverBackgroundColor);
            } else {
                g.setColor(getBackground());
            }
            g.fillRect(0, 0, getWidth(), getHeight());
            super.paintComponent(g);
        }

        @Override
        public void setContentAreaFilled(boolean b) {
        }

        public Color getHoverBackgroundColor() {
            return hoverBackgroundColor;
        }

        public void setHoverBackgroundColor(Color hoverBackgroundColor) {
            this.hoverBackgroundColor = hoverBackgroundColor;
        }

        public Color getPressedBackgroundColor() {
            return pressedBackgroundColor;
        }

        public void setPressedBackgroundColor(Color pressedBackgroundColor) {
            this.pressedBackgroundColor = pressedBackgroundColor;
        }
    }

    protected void createAndShowGUI() {
        JFrame frame = new JFrame("Test button");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        final MyButton btnSave = new MyButton("Save");
        btnSave.setForeground(new Color(0, 135, 200).brighter());
        btnSave.setHorizontalTextPosition(SwingConstants.CENTER);
        btnSave.setBorder(null);
        btnSave.setBackground(new Color(3, 59, 90));
        btnSave.setHoverBackgroundColor(new Color(3, 59, 90).brighter());
        btnSave.setPressedBackgroundColor(Color.PINK);
        frame.add(btnSave);
        frame.setSize(200, 200);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new TestButton().createAndShowGUI();
            }
        });

    }

}

Answer 2

• 从不,不要将MouseListener用于JButton

• 将ActionListener或ChangeListener与ButtonModel一起使用

• 在ButtonModel中实现

  1) isPressed

  2) isArmed

  3) isRollover

  4)ei

• JButton和ButtonModel的示例

Answer 3

public class MyCustomButton extends JButton {
    private Color pressedColor = Color.GREEN;
    private Color rolloverColor = Color.RED;
    private Color normalColor = Color.BLUE;

    public MyCustomButton (String text) {
        super(text);
        setBorderPainted(false);
        setFocusPainted(false);

        setContentAreaFilled(false);
        setOpaque(true);

        setBackground(normalColor);
        setForeground(Color.WHITE);
        setFont(new Font("Tahoma", Font.BOLD, 12));
        setText(text);

        addChangeListener(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent evt) {
                if (getModel().isPressed()) {
                    setBackground(pressedColor);
                } else if (getModel().isRollover()) {
                    setBackground(rolloverColor);
                } else {
                    setBackground(normalColor);
                }
            }
        });
    }
}