public void InvalidateMeasure()
{
if (ShouldInterceptInvalidate)
{
return;
}
if (IsMeasureDirty)
{
return; // already dirty
}
SetLayoutFlags(LayoutFlag.MeasureDirty);
if (FeatureConfiguration.UIElement.UseInvalidateMeasurePath && !IsMeasureDirtyPathDisabled)
{
InvalidateParentMeasurePath();
}
else
{
(this.GetParent() as UIElement)?.InvalidateMeasure();
if (IsVisualTreeRoot)
{
Window.InvalidateMeasure();
}
}
}
internal void InvalidateParentMeasurePath()
{
if (this.GetParent() is UIElement parent)
{
parent.InvalidateMeasurePath();
}
else if (IsVisualTreeRoot)
{
Window.InvalidateMeasure();
}
}
public void InvalidateArrange()
{
if (_isArrangeValid)
{
_isArrangeValid = false;
if (this.GetParent() is UIElement parent)
{
parent.InvalidateArrange();
}
else
{
Window.InvalidateMeasure();
}
}
}
internal void InvalidateParentMeasureDirtyPath()
{
if (this.GetParent() is UIElement parent) //TODO: Should this use VisualTree.GetParent as fallback? https://github.com/unoplatform/uno/issues/8978
{
parent.InvalidateMeasureDirtyPath();
}
else if (IsVisualTreeRoot)
{
#if __SKIA__
XamlRoot.InvalidateMeasure();
#else
Window.InvalidateMeasure();
#endif
}
}
public void InvalidateMeasure()
{
// TODO: Figure out why this condition breaks layouting in some cases
//if (_isMeasureValid)
{
_isMeasureValid = false;
_isArrangeValid = false;
if (this.GetParent() is UIElement parent)
{
parent.InvalidateMeasure();
}
else
{
Window.InvalidateMeasure();
}
}
}
public static void InvalidateMeasure(this IFrameworkElement e)
{
#if XAMARIN_ANDROID
var UnoViewGroup = e as UnoViewGroup;
if (UnoViewGroup != null)
{
// Use a non-virtual version of the RequestLayout method, for performance.
UnoViewGroup.RequestLayout();
}
else
{
(e as View).RequestLayout();
}
#elif XAMARIN_IOS
(e as View).SetNeedsLayout();
#elif __WASM__
Window.InvalidateMeasure();
#endif
}
