debugPaintSize method
- @override
override
In debug mode, paints a border around this render box.
Called for every RenderBox when debugPaintSizeEnabled is true.
Implementation
@override
void debugPaintSize(PaintingContext context, Offset offset) {
assert(() {
super.debugPaintSize(context, offset);
final Paint paint = Paint()
..style = PaintingStyle.stroke
..strokeWidth = 1.0
..color = const Color(0xFF00FF00);
final Canvas canvas = context.canvas;
RenderSliver child = firstChild;
while (child != null) {
Size size;
switch (axis) {
case Axis.vertical:
size = Size(child.constraints.crossAxisExtent, child.geometry.layoutExtent);
break;
case Axis.horizontal:
size = Size(child.geometry.layoutExtent, child.constraints.crossAxisExtent);
break;
}
assert(size != null);
canvas.drawRect(((offset + paintOffsetOf(child)) & size).deflate(0.5), paint);
child = childAfter(child);
}
return true;
}());
}