public void paint(Graphics2D g2d) {
frameNumber++;
Dimension dimension = getDimension();
BufferedImage mainStage = createMainStage();
BufferedImage frame =
mainStage.getSubimage(0, 48 - frameNumber * 2, dimension.width, dimension.height);
g2d.drawImage(frame, null, null);
Color progressbarBackgroundColor = new Color(basicColor);
Color progressbarShadowStartColor =
ColorUtils.overwriteAlpha(
ColorUtils.adjustLightness(progressbarBackgroundColor, 0.7f), 0.6f);
Color progressbarShadowEndColor =
ColorUtils.overwriteAlpha(
ColorUtils.adjustLightness(progressbarBackgroundColor, 0.3f), 0.6f);
// paint a shadow in the form of semi-transparent gradient
g2d.setPaint(
new GradientPaint(0, 0, progressbarShadowStartColor, 0, 7, progressbarShadowEndColor));
g2d.fillRect(0, 0, dimension.width, 7);
}
