public static Geometry?CreateGeometry(IWpfTextView textView, VirtualSnapshotSpan span, bool isMultiLine, bool clipToViewport = false)
{
var padding = isMultiLine ? LineMarkerPadding : TextMarkerPadding;
var pos = span.Start;
PathGeometry?geo = null;
bool createOutlinedPath = false;
while (pos <= span.End)
{
var line = textView.GetTextViewLineContainingBufferPosition(pos.Position);
bool useVspaces = line.IsLastDocumentLine();
var lineExtent = new VirtualSnapshotSpan(new VirtualSnapshotPoint(line.Start), new VirtualSnapshotPoint(line.EndIncludingLineBreak, useVspaces ? span.End.VirtualSpaces : 0));
var extentTmp = lineExtent.Intersection(new VirtualSnapshotSpan(pos, span.End));
Debug2.Assert(!(extentTmp is null));
if (line.VisibilityState != VisibilityState.Unattached && !(extentTmp is null) && extentTmp.Value.Length != 0)
{
var extent = extentTmp.Value;
Collection <TextBounds> textBounds;
if (extent.Start.IsInVirtualSpace)
{
var leading = line.TextRight + extent.Start.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
double width = line.EndOfLineWidth;
int vspaces = span.End.VirtualSpaces - span.Start.VirtualSpaces;
if (vspaces > 0)
{
width = vspaces * textView.FormattedLineSource.ColumnWidth;
}
textBounds = new Collection <TextBounds>();
textBounds.Add(new TextBounds(leading, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else if (extent.End.IsInVirtualSpace)
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
double width = extent.End.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
textBounds.Add(new TextBounds(line.TextRight, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
}
AddGeometries(textView, textBounds, isMultiLine, clipToViewport, padding, SystemParameters.CaretWidth, ref geo, ref createOutlinedPath);
}
if (line.IsLastDocumentLine())
{
break;
}
pos = new VirtualSnapshotPoint(line.GetPointAfterLineBreak());
}
if (createOutlinedPath)
{
geo = geo !.GetOutlinedPathGeometry();
}
if (!(geo is null) && geo.CanFreeze)
{
geo.Freeze();
}
return(geo);
}
public static Geometry CreateBoxGeometry(IWpfTextView textView, IList <VirtualSnapshotSpan> spans, bool isMultiLine, bool clipToViewport = false)
{
var padding = isMultiLine ? LineMarkerPadding : TextMarkerPadding;
PathGeometry geo = null;
bool createOutlinedPath = false;
foreach (var span in spans)
{
var line = textView.GetTextViewLineContainingBufferPosition(span.SnapshotSpan.Start);
Debug.Assert(span.SnapshotSpan.End <= line.EndIncludingLineBreak);
var lineExtent = new VirtualSnapshotSpan(new VirtualSnapshotPoint(line.Start), new VirtualSnapshotPoint(line.EndIncludingLineBreak, span.End.VirtualSpaces));
var extentTmp = lineExtent.Intersection(span);
Debug.Assert(extentTmp != null);
if (line.VisibilityState != VisibilityState.Unattached && extentTmp != null)
{
var extent = extentTmp.Value;
Collection <TextBounds> textBounds;
if (extent.Start.IsInVirtualSpace)
{
var leading = line.TextRight + extent.Start.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
double width = line.EndOfLineWidth;
int vspaces = span.End.VirtualSpaces - span.Start.VirtualSpaces;
if (vspaces > 0)
{
width = vspaces * textView.FormattedLineSource.ColumnWidth;
}
textBounds = new Collection <TextBounds>();
textBounds.Add(new TextBounds(leading, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else if (extent.End.IsInVirtualSpace)
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
double width = extent.End.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
textBounds.Add(new TextBounds(line.TextRight, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
}
AddGeometries(textView, textBounds, isMultiLine, clipToViewport, padding, SystemParameters.CaretWidth, ref geo, ref createOutlinedPath);
}
}
if (createOutlinedPath)
{
geo = geo.GetOutlinedPathGeometry();
}
if (geo != null && geo.CanFreeze)
{
geo.Freeze();
}
return(geo);
}
List <MarkedLineInfo> GetMarkedLineInfos(List <MarkedLineInfo> infos, VirtualSnapshotSpan markedSpan)
{
infos.Clear();
var formattedSpan = textView.TextViewLines.FormattedSpan;
bool useVspace = formattedSpan.End == markedSpan.End.Position && markedSpan.End.Position.Position == markedSpan.Snapshot.Length;
var virtFormattedSpan = new VirtualSnapshotSpan(new VirtualSnapshotPoint(formattedSpan.Start), new VirtualSnapshotPoint(formattedSpan.End, useVspace ? markedSpan.End.VirtualSpaces : 0));
var intersectionTmp = virtFormattedSpan.Intersection(markedSpan);
if (intersectionTmp == null)
{
return(infos);
}
var span = intersectionTmp.Value;
bool isMultiLineSpan = MarkerHelper.IsMultiLineSpan(textView, span.SnapshotSpan);
var pos = span.Start;
int lines = 0;
while (pos <= span.End)
{
if (lines > 0 && pos == span.End)
{
break;
}
var line = textView.TextViewLines.GetTextViewLineContainingBufferPosition(pos.Position);
if (line == null)
{
break;
}
bool useVspace2 = useVspace && line.IsLastDocumentLine();
var lineSpan = new VirtualSnapshotSpan(new VirtualSnapshotPoint(line.Start), new VirtualSnapshotPoint(line.EndIncludingLineBreak, useVspace2 ? markedSpan.End.VirtualSpaces : 0));
var lineIntersectionTmp = lineSpan.Intersection(span);
Debug.Assert(lineIntersectionTmp != null);
if (lineIntersectionTmp != null)
{
infos.Add(new MarkedLineInfo(line, lineIntersectionTmp.Value, isMultiLineSpan));
}
if (line.IsLastDocumentLine())
{
break;
}
pos = new VirtualSnapshotPoint(line.EndIncludingLineBreak);
lines++;
}
return(infos);
}
public static Geometry CreateGeometry(IWpfTextView textView, VirtualSnapshotSpan span, bool isMultiLine, bool clipToViewport = false) {
var padding = isMultiLine ? LineMarkerPadding : TextMarkerPadding;
var pos = span.Start;
PathGeometry geo = null;
bool createOutlinedPath = false;
while (pos <= span.End) {
var line = textView.GetTextViewLineContainingBufferPosition(pos.Position);
bool useVspaces = line.IsLastDocumentLine();
var lineExtent = new VirtualSnapshotSpan(new VirtualSnapshotPoint(line.Start), new VirtualSnapshotPoint(line.EndIncludingLineBreak, useVspaces ? span.End.VirtualSpaces : 0));
var extentTmp = lineExtent.Intersection(new VirtualSnapshotSpan(pos, span.End));
Debug.Assert(extentTmp != null);
if (line.VisibilityState != VisibilityState.Unattached && extentTmp != null && extentTmp.Value.Length != 0) {
var extent = extentTmp.Value;
Collection<TextBounds> textBounds;
if (extent.Start.IsInVirtualSpace) {
var leading = line.TextRight + extent.Start.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
double width = line.EndOfLineWidth;
int vspaces = span.End.VirtualSpaces - span.Start.VirtualSpaces;
if (vspaces > 0)
width = vspaces * textView.FormattedLineSource.ColumnWidth;
textBounds = new Collection<TextBounds>();
textBounds.Add(new TextBounds(leading, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else if (extent.End.IsInVirtualSpace) {
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
double width = extent.End.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
textBounds.Add(new TextBounds(line.TextRight, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
AddGeometries(textView, textBounds, isMultiLine, clipToViewport, padding, SystemParameters.CaretWidth, ref geo, ref createOutlinedPath);
}
if (line.IsLastDocumentLine())
break;
pos = new VirtualSnapshotPoint(line.GetPointAfterLineBreak());
}
if (createOutlinedPath)
geo = geo.GetOutlinedPathGeometry();
if (geo != null && geo.CanFreeze)
geo.Freeze();
return geo;
}
void EnsureSpanVisibleX(VirtualSnapshotSpan span, EnsureSpanVisibleOptions options) {
if ((textView.Options.WordWrapStyle() & WordWrapStyles.WordWrap) != 0)
return;
if (textView.ViewportWidth == 0)
return;
var lines = textView.TextViewLines.GetTextViewLinesIntersectingSpan(span.SnapshotSpan);
if (lines.Count == 0)
return;
var ispan = span.Intersection(new VirtualSnapshotSpan(textView.TextViewLines.FormattedSpan));
if (ispan == null)
return;
span = ispan.Value;
double left = double.PositiveInfinity, right = double.NegativeInfinity;
for (int i = 0; i < lines.Count; i++) {
var line = lines[i];
var lineSpan = line.ExtentIncludingLineBreak.Intersection(span.SnapshotSpan);
if (lineSpan == null)
continue;
var startPoint = new VirtualSnapshotPoint(lineSpan.Value.Start);
var endPoint = new VirtualSnapshotPoint(lineSpan.Value.End);
if (startPoint.Position == span.Start.Position)
startPoint = span.Start;
if (endPoint.Position == span.End.Position)
endPoint = span.End;
var startBounds = line.GetExtendedCharacterBounds(startPoint);
var endBounds = line.GetExtendedCharacterBounds(endPoint);
if (left > startBounds.Left)
left = startBounds.Left;
if (right < startBounds.Right)
right = startBounds.Right;
if (left > endBounds.Left)
left = endBounds.Left;
if (right < endBounds.Right)
right = endBounds.Right;
}
if (double.IsInfinity(left) || double.IsInfinity(right))
return;
Debug.Assert(left <= right);
if (left > right)
right = left;
double width = right - left;
double availWidth = Math.Max(0, textView.ViewportWidth - width);
double extraScroll;
const double EXTRA_WIDTH = 4;
if (availWidth >= EXTRA_WIDTH)
extraScroll = EXTRA_WIDTH;
else
extraScroll = availWidth / 2;
if (textView.ViewportLeft <= right && right <= textView.ViewportRight) {
}
else if (right > textView.ViewportRight)
textView.ViewportLeft = right + extraScroll - textView.ViewportWidth;
else {
var newLeft = left - extraScroll;
if (newLeft + textView.ViewportWidth < right)
newLeft = right - textView.ViewportWidth;
textView.ViewportLeft = newLeft;
}
}
public static Geometry CreateGeometry(IWpfTextView textView, VirtualSnapshotSpan span, bool isBoxMode, bool isMultiLine, bool extraPixelsHack, bool clipToViewport = false, int maxLines = 1)
{
// Force multiline mode if it's box selection or there'll be 1px-sized non-selected lines
// between the lines if you zoom in (eg. 110% zoom level)
if (isBoxMode)
{
isMultiLine = true;
}
var padding = isMultiLine ? LineMarkerPadding : TextMarkerPadding;
var pos = span.Start;
PathGeometry geo = null;
bool createOutlinedPath = false;
int lines = 0;
while (pos <= span.End && lines < maxLines)
{
var line = textView.GetTextViewLineContainingBufferPosition(pos.Position);
bool useVspaces = line.IsLastDocumentLine() || lines + 1 == maxLines;
var lineExtent = new VirtualSnapshotSpan(new VirtualSnapshotPoint(line.Start), new VirtualSnapshotPoint(line.EndIncludingLineBreak, useVspaces ? span.End.VirtualSpaces : 0));
var extentTmp = lineExtent.Intersection(new VirtualSnapshotSpan(pos, span.End));
Debug.Assert(extentTmp != null);
if (extentTmp != null)
{
var extent = extentTmp.Value;
Collection <TextBounds> textBounds;
if (extent.Start.IsInVirtualSpace)
{
var leading = line.TextRight + extent.Start.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
double width = isBoxMode ? 0 : line.EndOfLineWidth;
int vspaces = span.End.VirtualSpaces - span.Start.VirtualSpaces;
if (vspaces > 0)
{
width = vspaces * textView.FormattedLineSource.ColumnWidth;
}
textBounds = new Collection <TextBounds>();
textBounds.Add(new TextBounds(leading, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else if (extent.End.IsInVirtualSpace)
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
double width = extent.End.VirtualSpaces * textView.FormattedLineSource.ColumnWidth;
textBounds.Add(new TextBounds(line.TextRight, line.Top, width, line.Height, line.TextTop, line.TextHeight));
}
else
{
textBounds = line.GetNormalizedTextBounds(extent.SnapshotSpan);
}
AddGeometries(textView, textBounds, isMultiLine, clipToViewport, padding, SystemParameters.CaretWidth, ref geo, ref createOutlinedPath, extraPixelsHack);
}
if (line.IsLastDocumentLine())
{
break;
}
pos = new VirtualSnapshotPoint(line.GetPointAfterLineBreak());
lines++;
}
if (createOutlinedPath)
{
geo = geo.GetOutlinedPathGeometry();
}
if (geo != null && geo.CanFreeze)
{
geo.Freeze();
}
return(geo);
}
void EnsureSpanVisibleX(VirtualSnapshotSpan span, EnsureSpanVisibleOptions options)
{
if ((textView.Options.WordWrapStyle() & WordWrapStyles.WordWrap) != 0)
{
return;
}
if (textView.ViewportWidth == 0)
{
return;
}
var lines = textView.TextViewLines.GetTextViewLinesIntersectingSpan(span.SnapshotSpan);
if (lines.Count == 0)
{
return;
}
var ispan = span.Intersection(new VirtualSnapshotSpan(textView.TextViewLines.FormattedSpan));
if (ispan == null)
{
return;
}
span = ispan.Value;
double left = double.PositiveInfinity, right = double.NegativeInfinity;
for (int i = 0; i < lines.Count; i++)
{
var line = lines[i];
var lineSpan = line.ExtentIncludingLineBreak.Intersection(span.SnapshotSpan);
if (lineSpan == null)
{
continue;
}
var startPoint = new VirtualSnapshotPoint(lineSpan.Value.Start);
var endPoint = new VirtualSnapshotPoint(lineSpan.Value.End);
if (startPoint.Position == span.Start.Position)
{
startPoint = span.Start;
}
if (endPoint.Position == span.End.Position)
{
endPoint = span.End;
}
var startBounds = line.GetExtendedCharacterBounds(startPoint);
var endBounds = line.GetExtendedCharacterBounds(endPoint);
if (left > startBounds.Left)
{
left = startBounds.Left;
}
if (right < startBounds.Right)
{
right = startBounds.Right;
}
if (left > endBounds.Left)
{
left = endBounds.Left;
}
if (right < endBounds.Right)
{
right = endBounds.Right;
}
}
if (double.IsInfinity(left) || double.IsInfinity(right))
{
return;
}
Debug.Assert(left <= right);
if (left > right)
{
right = left;
}
double width = right - left;
double availWidth = Math.Max(0, textView.ViewportWidth - width);
double extraScroll;
const double EXTRA_WIDTH = 4;
if (availWidth >= EXTRA_WIDTH)
{
extraScroll = EXTRA_WIDTH;
}
else
{
extraScroll = availWidth / 2;
}
if (textView.ViewportLeft <= right && right <= textView.ViewportRight)
{
}
else if (right > textView.ViewportRight)
{
textView.ViewportLeft = right + extraScroll - textView.ViewportWidth;
}
else
{
var newLeft = left - extraScroll;
if (newLeft + textView.ViewportWidth < right)
{
newLeft = right - textView.ViewportWidth;
}
textView.ViewportLeft = newLeft;
}
}