/// <summary>
/// Updates the cache that contains the result of laying out the label's text.
/// </summary>
/// <param name="availableSize">The size of the space that is available for laying out text.</param>
private void UpdateTextLayoutResult(Size2D availableSize)
{
textLayoutCommands.Clear();
if (textParserResult.Count > 0 && Font.IsLoaded)
{
var unconstrainedWidth = Double.IsPositiveInfinity(availableSize.Width) && HorizontalAlignment != HorizontalAlignment.Stretch;
var unconstrainedHeight = Double.IsPositiveInfinity(availableSize.Height) && VerticalAlignment != VerticalAlignment.Stretch;
var constraintX = unconstrainedWidth ? null : (Int32?)Math.Ceiling(Display.DipsToPixels(availableSize.Width));
var constraintY = unconstrainedHeight ? null : (Int32?)Math.Ceiling(Display.DipsToPixels(availableSize.Height));
var cursorpos = textLayoutCommands.CursorPosition;
var textRenderingMode = TextOptions.GetTextRenderingMode(this);
var textScript = TextOptions.GetTextScript(this);
var textLanguage = TextOptions.GetTextLanguage(this);
var textDirection = FlowDirection == FlowDirection.RightToLeft ? TextDirection.RightToLeft : TextDirection.LeftToRight;
var options = (textRenderingMode == TextRenderingMode.Shaped) ? TextLayoutOptions.Shape : TextLayoutOptions.None;
var flags = LayoutUtil.ConvertAlignmentsToTextFlags(HorizontalContentAlignment, VerticalContentAlignment);
var settings = new TextLayoutSettings(Font, constraintX, constraintY, flags, options, textDirection, textScript, FontStyle, null, textLanguage);
View.Resources.TextRenderer.CalculateLayout(textParserResult, textLayoutCommands, settings);
View.Resources.TextRenderer.UpdateCursor(textLayoutCommands, cursorpos);
}
}
/// <summary>
/// Updates the cache which contains the element's laid-out text.
/// </summary>
/// <param name="availableSize">The amount of space in which the element's text can be laid out.</param>
private void UpdateTextLayoutCache(Size2D availableSize)
{
if (textLayoutCommands != null)
{
textLayoutCommands.Clear();
}
if (View == null)
{
return;
}
var content = Content;
var contentElement = content as UIElement;
if (contentElement == null)
{
if (textLayoutCommands == null)
{
textLayoutCommands = new TextLayoutCommandStream();
}
var font = GetValue <SourcedResource <UltravioletFont> >(TextElement.FontProperty);
var fontStyle = GetValue <UltravioletFontStyle>(TextElement.FontStyleProperty);
if (font.IsLoaded)
{
var availableSizeInPixels = Display.DipsToPixels(availableSize);
var cursorpos = textLayoutCommands.CursorPosition;
var textRenderingMode = TextOptions.GetTextRenderingMode(this);
var textScript = TextOptions.GetTextScript(this);
var textLanguage = TextOptions.GetTextLanguage(this);
var textDirection = FlowDirection == FlowDirection.RightToLeft ? TextDirection.RightToLeft : TextDirection.LeftToRight;
var options = (textRenderingMode == TextRenderingMode.Shaped) ? TextLayoutOptions.Shape : TextLayoutOptions.None;
var flags = LayoutUtil.ConvertAlignmentsToTextFlags(HorizontalAlignment, VerticalAlignment);
var settings = new TextLayoutSettings(font,
(Int32)Math.Ceiling(availableSizeInPixels.Width),
(Int32)Math.Ceiling(availableSizeInPixels.Height), flags, options, textDirection, textScript, fontStyle, null, textLanguage);
View.Resources.TextRenderer.CalculateLayout(textParserResult, textLayoutCommands, settings);
View.Resources.TextRenderer.UpdateCursor(textLayoutCommands, cursorpos);
}
}
}
