protected Size MeasureChildOverride(View view, Size slotSize)
{
var widthSpec = ViewHelper.SpecFromLogicalSize(slotSize.Width);
var heightSpec = ViewHelper.SpecFromLogicalSize(slotSize.Height);
if (double.IsPositiveInfinity(slotSize.Width) || double.IsPositiveInfinity(slotSize.Height))
{
// Bypass Android cache, to ensure the Child's Measure() is actually invoked.
view.ForceLayout();
// This could occur when one of the dimension is _Infinite_: Android will cache the
// value, which is not something we want. Specially when the container is a <StackPanel>.
// Issue: https://github.com/unoplatform/uno/issues/2879
}
if (view.IsLayoutRequested && view.Parent is View parent && !parent.IsLayoutRequested)
{
// If a view has requested layout but its Parent hasn't, then the tree is in a broken state, because RequestLayout() calls
// cannot bubble up from below the view, and remeasures cannot bubble down from above the parent. This can arise, eg, when
// ForceLayout() is used. To fix this state, call RequestLayout() on the parent. Since MeasureChildOverride() is called
// from the top down, we should be able to assume that the tree above the parent is already in a good state.
parent.RequestLayout();
}
MeasureChild(view, widthSpec, heightSpec);
var ret = Uno.UI.Controls.BindableView.GetNativeMeasuredDimensionsFast(view)
.PhysicalToLogicalPixels();
return(ret.AtMost(slotSize));
}
protected Size MeasureChildOverride(View view, Size slotSize)
{
var widthSpec = ViewHelper.SpecFromLogicalSize(slotSize.Width);
var heightSpec = ViewHelper.SpecFromLogicalSize(slotSize.Height);
if (double.IsPositiveInfinity(slotSize.Width) || double.IsPositiveInfinity(slotSize.Height))
{
// Bypass Android cache, to ensure the Child's Measure() is actually invoked.
view.ForceLayout();
// This could occur when one of the dimension is _Infinite_: Android will cache the
// value, which is not something we want. Specially when the container is a <StackPanel>.
// Issue: https://github.com/unoplatform/uno/issues/2879
}
MeasureChild(view, widthSpec, heightSpec);
var ret = Uno.UI.Controls.BindableView.GetNativeMeasuredDimensionsFast(view)
.PhysicalToLogicalPixels();
return(ret.AtMost(slotSize));
}
