private void InnerSelect(VirtualSnapshotPoint anchorPoint, VirtualSnapshotPoint activePoint)
{
bool isEmpty = this.IsEmpty;
this.ActivationTracksFocus = true;
this._anchorPoint = anchorPoint;
this._activePoint = activePoint;
VirtualSnapshotPoint bufferPosition1 = this._anchorPoint;
VirtualSnapshotPoint bufferPosition2 = this._activePoint;
if (this._anchorPoint > this._activePoint)
{
bufferPosition1 = this._activePoint;
bufferPosition2 = this._anchorPoint;
}
if (this.Mode == TextSelectionMode.Box)
{
IWpfTextViewLine containingBufferPosition1 = this._wpfTextView.GetTextViewLineContainingBufferPosition(bufferPosition1.Position);
IWpfTextViewLine containingBufferPosition2 = this._wpfTextView.GetTextViewLineContainingBufferPosition(bufferPosition2.Position);
TextBounds extendedCharacterBounds = containingBufferPosition1.GetExtendedCharacterBounds(bufferPosition1);
this._leftX = extendedCharacterBounds.Leading;
extendedCharacterBounds = containingBufferPosition2.GetExtendedCharacterBounds(bufferPosition2);
this._rightX = extendedCharacterBounds.Leading;
if (this._rightX < this._leftX)
{
double leftX = this._leftX;
this._leftX = this._rightX;
this._rightX = leftX;
}
}
//TODO: this.RaiseChangedEvent(isEmpty, this.IsEmpty, true);
}
public static Rect?GetViewSpanRect(IWpfTextView wpfTextView, SnapshotSpan span)
{
var nullable = new Rect?();
if (span.Length > 0)
{
double num1 = double.MaxValue;
double num2 = double.MaxValue;
double val1_1 = double.MinValue;
double val1_2 = double.MinValue;
foreach (TextBounds textBounds in wpfTextView.TextViewLines.GetNormalizedTextBounds(span))
{
num1 = Math.Min(num1, textBounds.Left);
num2 = Math.Min(num2, textBounds.TextTop);
val1_1 = Math.Max(val1_1, textBounds.Right);
val1_2 = Math.Max(val1_2, textBounds.TextBottom + 1.0);
}
IWpfTextViewLine containingBufferPosition = wpfTextView.TextViewLines.GetTextViewLineContainingBufferPosition(span.Start);
if (containingBufferPosition != null)
{
TextBounds extendedCharacterBounds = containingBufferPosition.GetExtendedCharacterBounds(span.Start);
if (extendedCharacterBounds.Left < val1_1 && extendedCharacterBounds.Left >= wpfTextView.ViewportLeft && extendedCharacterBounds.Left < wpfTextView.ViewportRight)
{
num1 = extendedCharacterBounds.Left;
}
}
ITextViewLine textViewLine = wpfTextView.TextViewLines.GetTextViewLineContainingBufferPosition(span.End);
if (textViewLine != null && textViewLine.Start == span.End)
{
val1_2 = Math.Max(val1_2, textViewLine.TextBottom + 1.0);
}
if (num1 < val1_1)
{
nullable = new Rect(num1, num2, val1_1 - num1, val1_2 - num2);
}
}
else
{
ITextViewLine textViewLine = wpfTextView.TextViewLines.GetTextViewLineContainingBufferPosition(span.Start);
if (textViewLine != null)
{
TextBounds characterBounds = textViewLine.GetCharacterBounds(span.Start);
nullable = new Rect(characterBounds.Left, characterBounds.TextTop, 0.0, characterBounds.TextHeight + 1.0);
}
}
if (!nullable.HasValue || nullable.Value.IsEmpty)
{
return(null);
}
Rect rect1 = new Rect(wpfTextView.ViewportLeft, wpfTextView.ViewportTop, wpfTextView.ViewportWidth, wpfTextView.ViewportHeight);
Rect rect2 = nullable.Value;
rect2.Intersect(rect1);
var point1 = GetScreenPointFromTextXY(wpfTextView, rect2.Left, rect2.Top);
var point2 = GetScreenPointFromTextXY(wpfTextView, rect2.Right, rect2.Bottom);
return(new Rect(point1, point2));
}