draw method

@override void draw(Canvas canvas, Rect bounds)

Draws the contents or children of this Drawable to the canvas, using the parentPaint to optionally override the child's paint.

The bounds specify the area to draw in.

Implementation

@override
void draw(Canvas canvas, Rect bounds) {
  if (!hasDrawableContent) {
    return;
  }

  path.fillType = style.pathFillType ?? PathFillType.nonZero;
  // if we have multiple clips to apply, need to wrap this in a loop.
  final Function innerDraw = () {
    if (transform != null) {
      canvas.save();
      canvas.transform(transform!);
    }
    if (style.blendMode != null) {
      canvas.saveLayer(null, Paint()..blendMode = style.blendMode!);
    }
    if (style.mask != null) {
      canvas.saveLayer(null, Paint());
    }
    if (style.fill?.color != null) {
      assert(style.fill!.style == PaintingStyle.fill);
      canvas.drawPath(path, style.fill!.toFlutterPaint());
    }

    if (style.stroke?.color != null &&
        (style.stroke!.strokeWidth == null ||
            (style.stroke!.strokeWidth != null &&
                style.stroke!.strokeWidth! > 0))) {
      assert(style.stroke!.style == PaintingStyle.stroke);
      if (style.dashArray != null &&
          !identical(style.dashArray, DrawableStyle.emptyDashArray)) {
        canvas.drawPath(
          dashPath(
            path,
            dashArray: style.dashArray!,
            dashOffset: style.dashOffset,
          ),
          style.stroke!.toFlutterPaint(),
        );
      } else {
        canvas.drawPath(path, style.stroke!.toFlutterPaint());
      }
    }

    if (style.mask != null) {
      canvas.saveLayer(null, _grayscaleDstInPaint);
      style.mask!.draw(canvas, bounds);
      canvas.restore();
      canvas.restore();
    }

    if (style.blendMode != null) {
      canvas.restore();
    }
    if (transform != null) {
      canvas.restore();
    }
  };

  if (style.clipPath?.isNotEmpty == true) {
    for (Path clip in style.clipPath!) {
      canvas.save();
      canvas.clipPath(clip);
      innerDraw();
      canvas.restore();
    }
  } else {
    innerDraw();
  }
}