/// <summary>
/// Gets the or create adornment.
/// </summary>
UIElement GetOrCreateAdornment(AdornmentCache adornmentCache, SnapshotSpan snapshotSpan, TagData tagData, HashSet <SnapshotSpan> toRemove)
{
Adornment adornment;
if (adornmentCache.TryGetValue(snapshotSpan, out adornment))
{
if (UpdateAdornment(adornment, tagData))
{
toRemove.Remove(snapshotSpan);
}
}
else
{
var adornmentScope = new Scope
{
{ Keys.TagModel, tagData },
{ Keys.OnAdornmentClicked, OnAdornmentClicked },
{ Keys.UpdateTextBoxStyleForVisualStudio, scope.TextBlockStyler }
};
adornment = new Adornment(adornmentScope);
// Get the adornment to measure itself. Its DesiredSize property is used to determine
// how much space to leave between text for this adornment.
// Note: If the size of the adornment changes, the line will be reformatted to accommodate it.
// Note: Some adornments may change size when added to the view's visual tree due to inherited
// dependency properties that affect layout. Such options can include SnapsToDevicePixels,
// UseLayoutRounding, TextRenderingMode, TextHintingMode, and TextFormattingMode. Making sure
// that these properties on the adornment match the view's values before calling Measure here
// can help avoid the size change and the resulting unnecessary re-format.
adornment.UIElement.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
adornmentCache.Add(snapshotSpan, adornment);
}
return(adornment.UIElement);
}
/// <summary>
/// Updates the adornment.
/// </summary>
bool UpdateAdornment(Adornment adornment, TagData dataTagData)
{
adornment.Update(dataTagData);
return(true);
}
