paintIcon method

void paintIcon(Canvas canvas)

Paints the nested chevron icons on the canvas.

Implementation

void paintIcon(Canvas canvas) {
  // Each chevron is square based on height (height doesn't change with nesting)
  final chevronSize = innerRect.height;
  final step = chevronSize / 3;
  final spacing = chevronSize * 0.5;

  for (int i = 0; i < nestingLevel; i++) {
    // Animate only the last chevron (if not the first)
    double opacity = 1.0;
    if (i == nestingLevel - 1 && nestingLevel > 1) {
      opacity = animationStep;
    }
    if (opacity <= 0) continue;

    paintObject.color = color.withValues(alpha: opacity * color.a);

    canvas.save();

    // Offset for this chevron
    canvas.translate(i * spacing, 0);

    // Draw chevron - same SIZE as single BackIconPainter
    var topLine = RRect.fromLTRBR(
      0,
      0,
      chevronSize,
      step,
      Radius.circular(step / 2),
    );

    var bottomLine = RRect.fromLTRBR(
      0,
      step * 2,
      chevronSize,
      chevronSize,
      const Radius.circular(4),
    );

    var topIconPath = Path()..addRRect(topLine);
    var bottomIconPath = Path()..addRRect(bottomLine);

    // Same transforms as BackIconPainter
    canvas.translate(-5, outerRect.height / 2);
    canvas.rotate(-maxRotationRadians);
    canvas.drawPath(topIconPath, paintObject);

    canvas.rotate(maxRotationRadians * 2);
    canvas.translate(0, -outerRect.height);
    canvas.drawPath(bottomIconPath, paintObject);

    canvas.restore();
  }

  paintObject.color = color;
}