void DisplayLines(SnapshotPoint bufferPosition, double verticalDistance, ViewRelativePosition relativeTo, double viewportWidthOverride, double viewportHeightOverride, double?newViewportTop)
{
if (IsClosed)
{
throw new InvalidOperationException();
}
Dispatcher.VerifyAccess();
if (bufferPosition.Snapshot != TextSnapshot)
{
throw new ArgumentException();
}
if (relativeTo != ViewRelativePosition.Top && relativeTo != ViewRelativePosition.Bottom)
{
throw new ArgumentOutOfRangeException(nameof(relativeTo));
}
if (viewportHeightOverride < 0 || double.IsNaN(viewportHeightOverride))
{
throw new ArgumentOutOfRangeException(nameof(viewportHeightOverride));
}
if (viewportWidthOverride < 0 || double.IsNaN(viewportWidthOverride))
{
throw new ArgumentOutOfRangeException(nameof(viewportWidthOverride));
}
bool invalidateAllLines = false;
if (viewportWidthOverride != lastViewportWidth || viewportWidthOverride != lastFormattedLineSourceViewportWidth)
{
invalidateAllLines = true;
lastViewportWidth = viewportWidthOverride;
}
// Make sure the scheduled method doesn't try to call this method
delayLayoutLinesInProgress = false;
if (invalidateAllLines)
{
invalidatedRegions.Clear();
invalidatedRegions.Add(new SnapshotSpan(TextSnapshot, 0, TextSnapshot.Length));
}
var regionsToInvalidate = new NormalizedSnapshotSpanCollection(invalidatedRegions.Select(a => a.TranslateTo(TextSnapshot, SpanTrackingMode.EdgeInclusive)));
invalidatedRegions.Clear();
if (invalidatedRegions.Capacity > 100)
{
invalidatedRegions.TrimExcess();
}
if (!(FormattedLineSource.SourceTextSnapshot == TextSnapshot && FormattedLineSource.TopTextSnapshot == VisualSnapshot))
{
invalidateAllLines = true;
}
if (invalidateAllLines || formattedLineSourceIsInvalidated)
{
CreateFormattedLineSource(viewportWidthOverride);
formattedLineSourceIsInvalidated = false;
}
Debug.Assert(FormattedLineSource.SourceTextSnapshot == TextSnapshot && FormattedLineSource.TopTextSnapshot == VisualSnapshot);
var lineTransformProvider = LineTransformProvider;
if (InLayout)
{
throw new InvalidOperationException();
}
InLayout = true;
var oldVisibleLines = new HashSet <ITextViewLine>(wpfTextViewLineCollection == null ? (IList <ITextViewLine>)Array.Empty <ITextViewLine>() : wpfTextViewLineCollection);
wpfTextViewLineCollection?.Invalidate();
var layoutHelper = new LayoutHelper(lineTransformProvider, newViewportTop ?? 0, oldVisibleLines, GetValidCachedLines(regionsToInvalidate), FormattedLineSource, TextViewModel, VisualSnapshot, TextSnapshot);
layoutHelper.LayoutLines(bufferPosition, relativeTo, verticalDistance, ViewportLeft, viewportWidthOverride, viewportHeightOverride);
visiblePhysicalLines.AddRange(layoutHelper.AllVisiblePhysicalLines);
wpfTextViewLineCollection = new WpfTextViewLineCollection(this, TextSnapshot, layoutHelper.AllVisibleLines);
if (!InLayout)
{
throw new InvalidOperationException();
}
InLayout = false;
textLayer.AddVisibleLines(layoutHelper.AllVisibleLines);
var newOrReformattedLines = layoutHelper.NewOrReformattedLines.ToArray();
var translatedLines = layoutHelper.TranslatedLines.ToArray();
if (layoutHelper.NewViewportTop != viewportTop)
{
viewportTop = layoutHelper.NewViewportTop;
SetTop(normalAdornmentLayerCollection, -viewportTop);
}
RaiseLayoutChanged(viewportWidthOverride, viewportHeightOverride, newOrReformattedLines, translatedLines);
}
void DisplayLines(SnapshotPoint bufferPosition, double verticalDistance, ViewRelativePosition relativeTo, double viewportWidthOverride, double viewportHeightOverride, double? newViewportTop) {
if (IsClosed)
throw new InvalidOperationException();
Dispatcher.VerifyAccess();
if (bufferPosition.Snapshot != TextSnapshot)
throw new ArgumentException();
if (relativeTo != ViewRelativePosition.Top && relativeTo != ViewRelativePosition.Bottom)
throw new ArgumentOutOfRangeException(nameof(relativeTo));
if (viewportHeightOverride < 0 || double.IsNaN(viewportHeightOverride))
throw new ArgumentOutOfRangeException(nameof(viewportHeightOverride));
if (viewportWidthOverride < 0 || double.IsNaN(viewportWidthOverride))
throw new ArgumentOutOfRangeException(nameof(viewportWidthOverride));
bool invalidateAllLines = false;
if (viewportWidthOverride != lastViewportWidth || viewportWidthOverride != lastFormattedLineSourceViewportWidth) {
invalidateAllLines = true;
lastViewportWidth = viewportWidthOverride;
}
// Make sure the scheduled method doesn't try to call this method
delayLayoutLinesInProgress = false;
if (invalidateAllLines) {
invalidatedRegions.Clear();
invalidatedRegions.Add(new SnapshotSpan(TextSnapshot, 0, TextSnapshot.Length));
}
var regionsToInvalidate = new NormalizedSnapshotSpanCollection(invalidatedRegions.Select(a => a.TranslateTo(TextSnapshot, SpanTrackingMode.EdgeInclusive)));
invalidatedRegions.Clear();
if (invalidatedRegions.Capacity > 100)
invalidatedRegions.TrimExcess();
if (!(FormattedLineSource.SourceTextSnapshot == TextSnapshot && FormattedLineSource.TopTextSnapshot == VisualSnapshot))
invalidateAllLines = true;
if (invalidateAllLines || formattedLineSourceIsInvalidated) {
CreateFormattedLineSource(viewportWidthOverride);
formattedLineSourceIsInvalidated = false;
}
Debug.Assert(FormattedLineSource.SourceTextSnapshot == TextSnapshot && FormattedLineSource.TopTextSnapshot == VisualSnapshot);
var lineTransformProvider = LineTransformProvider;
if (InLayout)
throw new InvalidOperationException();
InLayout = true;
var oldVisibleLines = new HashSet<ITextViewLine>(wpfTextViewLineCollection == null ? (IList<ITextViewLine>)Array.Empty<ITextViewLine>() : wpfTextViewLineCollection);
wpfTextViewLineCollection?.Invalidate();
var layoutHelper = new LayoutHelper(lineTransformProvider, newViewportTop ?? 0, oldVisibleLines, GetValidCachedLines(regionsToInvalidate), FormattedLineSource, TextViewModel, VisualSnapshot, TextSnapshot);
layoutHelper.LayoutLines(bufferPosition, relativeTo, verticalDistance, ViewportLeft, viewportWidthOverride, viewportHeightOverride);
visiblePhysicalLines.AddRange(layoutHelper.AllVisiblePhysicalLines);
wpfTextViewLineCollection = new WpfTextViewLineCollection(this, TextSnapshot, layoutHelper.AllVisibleLines);
if (!InLayout)
throw new InvalidOperationException();
InLayout = false;
textLayer.AddVisibleLines(layoutHelper.AllVisibleLines);
var newOrReformattedLines = layoutHelper.NewOrReformattedLines.ToArray();
var translatedLines = layoutHelper.TranslatedLines.ToArray();
if (layoutHelper.NewViewportTop != viewportTop) {
viewportTop = layoutHelper.NewViewportTop;
SetTop(normalAdornmentLayerCollection, -viewportTop);
}
RaiseLayoutChanged(viewportWidthOverride, viewportHeightOverride, newOrReformattedLines, translatedLines);
}
