addToScene method
- @override
override
Override this method to upload this layer to the engine.
Return the engine layer for retained rendering. When there's no corresponding engine layer, null is returned.
Implementation
@override
ui.EngineLayer addToScene(ui.SceneBuilder builder, [Offset layerOffset = Offset.zero]) {
bool enabled = true;
assert(() {
enabled = !debugDisableClipLayers;
return true;
}());
if (enabled)
builder.pushClipPath(clipPath.shift(layerOffset), clipBehavior: clipBehavior);
addChildrenToScene(builder, layerOffset);
if (enabled)
builder.pop();
return null; // this does not return an engine layer yet.
}