/// <summary>
/// Updates the specified layout using the current properties, and the specified new size.
/// </summary>
private Size UpdateLayout(ref LayoutBuilder layout, Size availableSize, bool exactWidth)
{
// Normally this is a no-op since it's called in Measure. We call it again to prevent a crash in the edge case where Text changes in between calling Measure and Arrange.
Update();
var newLayout = new LayoutBuilder(
_textFormatted,
_paint,
IsLayoutConstrainedByMaxLines ? TruncateEnd : _ellipsize, // .SetMaxLines() won't work on Android unless the ellipsize "END" is used.
_layoutAlignment,
_justificationMode,
TextWrapping,
MaxLines,
availableSize,
exactWidth,
(float)(LineHeight * ViewHelper.Scale),
LineStackingStrategy,
layout
);
if (!newLayout.Equals(layout))
{
layout = newLayout;
using (
_trace.WriteEventActivity(
TraceProvider.TextBlock_MakeLayoutStart,
TraceProvider.TextBlock_MakeLayoutStop
)
)
{
layout.Build();
}
}
if (Foreground is GradientBrush gb)
{
layout.Layout.Paint.SetShader(gb.GetShader(_measureLayout.MeasuredSize.LogicalToPhysicalPixels()));
}
if (_textFormatted is UnoSpannableString textFormatted)
{
foreach (var inline in GetEffectiveInlines())
{
// TODO: This doesn't work when the Inline background is a GradientBrush, but works for SolidColorBrush
textFormatted.SetPaintSpan(inline.inline.GetPaint(_measureLayout.MeasuredSize), inline.start, inline.end);
}
}
return(layout.MeasuredSize);
}
/// <summary>
/// Updates the specified layout using the current properties, and the specified new size.
/// </summary>
private Size UpdateLayout(ref LayoutBuilder layout, Size availableSize, bool exactWidth)
{
// Normally this is a no-op since it's called in Measure. We call it again to prevent a crash in the edge case where Text changes in between calling Measure and Arrange.
Update();
var newLayout = new LayoutBuilder(
_textFormatted,
_paint,
IsLayoutConstrainedByMaxLines ? TruncateEnd : _ellipsize, // .SetMaxLines() won't work on Android unless the ellipsize "END" is used.
_layoutAlignment,
_justificationMode,
TextWrapping,
MaxLines,
availableSize,
exactWidth,
(float)(LineHeight * ViewHelper.Scale),
LineStackingStrategy,
layout
);
if (!newLayout.Equals(layout))
{
layout = newLayout;
using (
_trace.WriteEventActivity(
TraceProvider.TextBlock_MakeLayoutStart,
TraceProvider.TextBlock_MakeLayoutStop
)
)
{
layout.Build();
}
}
return(layout.MeasuredSize);
}
