method debugPaintSize

Source

@override
void debugPaintSize(PaintingContext context, Offset offset) {
  super.debugPaintSize(context, offset);
  assert(() {
    Paint paint;
    if (child != null && !child.size.isEmpty) {
      Path path;
      paint = new Paint()
        ..color = debugPaintPaddingColor;
      path = new Path()
        ..moveTo(offset.dx, offset.dy)
        ..lineTo(offset.dx + size.width, offset.dy)
        ..lineTo(offset.dx + size.width, offset.dy + size.height)
        ..lineTo(offset.dx, offset.dy + size.height)
        ..close()
        ..moveTo(offset.dx + padding.left, offset.dy + padding.top)
        ..lineTo(offset.dx + padding.left, offset.dy + size.height - padding.bottom)
        ..lineTo(offset.dx + size.width - padding.right, offset.dy + size.height - padding.bottom)
        ..lineTo(offset.dx + size.width - padding.right, offset.dy + padding.top)
        ..close();
      context.canvas.drawPath(path, paint);
      paint = new Paint()
        ..color = debugPaintPaddingInnerEdgeColor;
      const double kOutline = 2.0;
      path = new Path()
        ..moveTo(offset.dx + math.max(padding.left - kOutline, 0.0), offset.dy + math.max(padding.top - kOutline, 0.0))
        ..lineTo(offset.dx + math.min(size.width - padding.right + kOutline, size.width), offset.dy + math.max(padding.top - kOutline, 0.0))
        ..lineTo(offset.dx + math.min(size.width - padding.right + kOutline, size.width), offset.dy + math.min(size.height - padding.bottom + kOutline, size.height))
        ..lineTo(offset.dx + math.max(padding.left - kOutline, 0.0), offset.dy + math.min(size.height - padding.bottom + kOutline, size.height))
        ..close()
        ..moveTo(offset.dx + padding.left, offset.dy + padding.top)
        ..lineTo(offset.dx + padding.left, offset.dy + size.height - padding.bottom)
        ..lineTo(offset.dx + size.width - padding.right, offset.dy + size.height - padding.bottom)
        ..lineTo(offset.dx + size.width - padding.right, offset.dy + padding.top)
        ..close();
      context.canvas.drawPath(path, paint);
    } else {
      paint = new Paint()
        ..color = debugPaintSpacingColor;
      context.canvas.drawRect(offset & size, paint);
    }
    return true;
  });
}