protected void paintComponentBackground(Graphics g) {
int w = button.getWidth();
int h = button.getHeight();
Color top_color = hovered ? (pressed ? pressed_dark_color : hovered_light_color) : light_color;
Color bottom_color =
hovered ? (pressed ? pressed_light_color : hovered_dark_color) : dark_color;
GradientPaint gp = new GradientPaint(1, 1, top_color, 1, h - 2, bottom_color);
Graphics2D g2d = (Graphics2D) g;
g2d.setPaint(gp);
g2d.fillRect(1, 1, w - 2, h - 2);
g.setColor(Color.white);
g.drawLine(0, 0, w - 1, 0);
g.drawLine(0, 0, 0, h - 1);
g.setColor(border_color);
g.drawLine(0, h - 1, w - 1, h - 1);
g.drawLine(w - 1, 0, w - 1, h - 1);
}
public void setHovered(boolean hovered) {
this.hovered = hovered;
button.repaint();
}
public void setPressed(boolean pressed) {
this.pressed = pressed;
button.repaint();
}
public void mouseReleased(MouseEvent e) {
setPressed(false);
button.fireActionPerformed(new ActionEvent(button, 0, button.getText()));
}
public void uninstallUI(JComponent c) {
button.removeMouseListener(this);
button.removeMouseMotionListener(this);
}
public void installUI(JComponent c) {
button = (CurtainButton) c;
button.addMouseListener(this);
button.addMouseMotionListener(this);
}
public void paint(Graphics g, JComponent c) {
paintComponentBackground(g);
int w = button.getWidth();
int h = button.getHeight();
int wd = 0;
if (button.getIcon() != null) wd += button.getIcon().getIconWidth();
FontMetrics fm = g.getFontMetrics();
if (button.getText() != null) wd += fm.stringWidth(button.getText()) + TEXT_ICON_PADDING;
int x =
(int) (LEADING_TEXT_PADDING + (w - 2 * LEADING_TEXT_PADDING - wd) * button.getAlignment());
if (button.getIcon() != null) {
int y = (h - button.getIcon().getIconHeight()) / 2;
button.getIcon().paintIcon(button, g, x, y);
x += button.getIcon().getIconWidth() + TEXT_ICON_PADDING;
}
if (button.getText() != null) {
int y = (h - fm.getHeight()) / 2 + fm.getAscent();
g.setColor(button.getForeground());
g.drawString(button.getText(), x, y);
}
}
