我正在尝试为文本创建一个从单词顶部到底部的渐变绘制，而不是从左到右。实际上，我是通过这个链接实现的。他们把文字的形状画在嵌板上。我只是编辑了他们的代码，并能够应用的影响，我正在寻找。以下是我编辑的绘制方法（其中s是一个形状）：

@Override
protected void paintComponent(Graphics g) {
  super.paintComponent(g);
  Graphics2D g2 = (Graphics2D) g.create();
  g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  g2.translate(100, 150);
  Rectangle2D r = s.getBounds2D();
  int x = (int) r.getX();
  int y = (int) r.getY();
  int h = (int) r.getHeight();
  GradientPaint gp = new GradientPaint(x, y, Color.MAGENTA, x, h, Color.ORANGE);
  g2.setPaint(gp);
  g2.fill(s);
}

这是可行的，但是这种方法覆盖了jpanel的paintcomponent方法。我试图通过一个扩展jlabel的新gradientlabel类来重新创建它。我的问题是 g2d.fill(s) 方法是在标签上方的某个地方绘制形状，看起来遥不可及。我不明白它为什么要这样做。也许是因为演员的原因 Graphics2D g.create(); ? 我不得不加上 g2.translate(x,y) 方法将形状下拉到可见位置。
我想我有两个问题。
为什么 g2.fill(s) 在由jlabel super方法绘制的文本上绘制形状？这可能是因为我的布局经理吗？
这是我应该走的路吗？有没有一个更简单的方法来应用垂直油漆梯度的文字？
下面是用于测试的最小代码：

public class test extends JFrame {

private JPanel contentPane;

public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
            try {
                test frame = new test();
                frame.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}

public test() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setBounds(100, 100, 516, 360);
    contentPane = new JPanel();
    contentPane.setBorder(null);
    setContentPane(contentPane);
    GridBagLayout gbl_contentPane = new GridBagLayout();
    gbl_contentPane.columnWidths = new int[]{0, 0};
    gbl_contentPane.rowHeights = new int[]{0, 100, 0};
    gbl_contentPane.columnWeights = new double[]{1.0, Double.MIN_VALUE};
    gbl_contentPane.rowWeights = new double[]{0.0, 0.0, Double.MIN_VALUE};
    contentPane.setLayout(gbl_contentPane);

    Component verticalStrut = Box.createVerticalStrut(20);
    GridBagConstraints gbc_verticalStrut = new GridBagConstraints();
    gbc_verticalStrut.insets = new Insets(0, 0, 5, 0);
    gbc_verticalStrut.gridx = 0;
    gbc_verticalStrut.gridy = 0;
    contentPane.add(verticalStrut, gbc_verticalStrut);

    GradientLabel lblTest = new GradientLabel("TEST");
    lblTest.setHorizontalAlignment(SwingConstants.CENTER);
    lblTest.setGradientColors(Color.GREEN, Color.WHITE);
    lblTest.setFont(new Font("Tahoma", Font.PLAIN, 70));
    GridBagConstraints gbc_lblTest = new GridBagConstraints();
    gbc_lblTest.fill = GridBagConstraints.BOTH;
    gbc_lblTest.gridx = 0;
    gbc_lblTest.gridy = 1;
    contentPane.add(lblTest, gbc_lblTest);
}

public class GradientLabel extends JLabel {

    private Color c1;
    private Color c2;

    public GradientLabel(String text) {
        setText(text);
        this.setOpaque(false);
    }

    public void setGradientColors(Color c1, Color c2) {
        this.c1 = c1;
        this.c2 = c2;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        Font f = getFont();
        GlyphVector v = f.createGlyphVector(getFontMetrics(f).getFontRenderContext(), getText());
        Shape s = v.getOutline();
        Rectangle2D r = s.getBounds2D();
        int x = (int) r.getX();
        int y = (int) r.getY();
        int h = (int) r.getHeight();
        int w = (int) r.getWidth();

        //without this the shape is drawn almost out of view
        g2d.translate(x, h);
        g2d.drawRect(x, y, w, h);
        //for some reason using only h as the second y doesn't show much of the second color. 
        //Subtracting 60 arbitrarily showed more of the second color in the gradient. 
        //Bonus points for an explanation on why that happens.
        GradientPaint gp = new GradientPaint(x, y, c1, x, h - 60, c2);
        g2d.setPaint(gp);
        g2d.fill(s);
    }
  }
}