/// <summary>
/// </summary>
public ICaretPosition MoveTo(Int32 characterIndex, CaretPlacement caretPlacement)
{
if (_overwriteMode)
{
caretPlacement = CaretPlacement.LeftOfCharacter;
}
ICaretPosition oldPosition = this.Position;
Span textElementSpan = _editorView.GetTextElementSpan(characterIndex);
if (textElementSpan == null)
{
return(oldPosition);
}
_caretPlacement = caretPlacement;
if ((_caretPlacement == CaretPlacement.RightOfCharacter) && (characterIndex < _editorView.TextBuffer.Length))
{
_insertionPoint = new TextPoint(_editorView.TextBuffer, textElementSpan.End);
}
else
{
_insertionPoint = new TextPoint(_editorView.TextBuffer, textElementSpan.Start);
}
ICaretPosition position = this.Position;
this.PositionChanged(this, new CaretPositionChangedEventArgs(oldPosition, position));
return(position);
}
internal CaretPosition(Int32 characterIndex, Int32 textInsertionIndex, CaretPlacement caretPlacement)
{
if (characterIndex < 0)
{
throw new ArgumentOutOfRangeException("characterIndex");
}
if (textInsertionIndex < 0)
{
throw new ArgumentOutOfRangeException("textInsertionIndex");
}
_characterIndex = characterIndex;
_textInsertionIndex = textInsertionIndex;
_placement = caretPlacement;
}
internal CaretPosition(Int32 characterIndex, Int32 textInsertionIndex, CaretPlacement caretPlacement)
{
if (characterIndex < 0)
{
throw new ArgumentOutOfRangeException("characterIndex");
}
if (textInsertionIndex < 0)
{
throw new ArgumentOutOfRangeException("textInsertionIndex");
}
_characterIndex = characterIndex;
_textInsertionIndex = textInsertionIndex;
_placement = caretPlacement;
}
/// <summary>
/// </summary>
public CaretElement(EditorView editorView)
{
SizeChangedEventHandler handler = null;
_editorView = editorView;
_caretPlacement = CaretPlacement.LeftOfCharacter;
_insertionPoint = new TextPoint(editorView.TextBuffer, 0);
_preferredVerticalPosition = _preferredHorizontalPosition = 0;
_textViewHelper = new TextViewHelper(_editorView);
this.ConstructCaretGeometry();
TextLine line = TextFormatter.Create().FormatLine(new DefaultLineGutterTextSource("W", TextFormattingRunProperties.DefaultProperties), 0, 10, new TextFormattingParagraphProperties(), null);
_defaultOverwriteCaretWidth = line.Width;
_overwriteCaretBrush = new SolidColorBrush(Colors.Gray);
_overwriteCaretBrush.Opacity = 0.5;
DoubleAnimationUsingKeyFrames frames = new DoubleAnimationUsingKeyFrames();
frames.BeginTime = new TimeSpan((long)0);
frames.RepeatBehavior = RepeatBehavior.Forever;
frames.KeyFrames.Add(new DiscreteDoubleKeyFrame(1, KeyTime.FromPercent(0)));
Int32 caretBlinkTime = User32.GetCaretBlinkTime();
if (caretBlinkTime > 0)
{
frames.KeyFrames.Add(new DiscreteDoubleKeyFrame(0, KeyTime.FromPercent(0.5)));
}
else
{
caretBlinkTime = 500;
}
frames.Duration = new Duration(new TimeSpan(0, 0, 0, 0, caretBlinkTime * 2));
_blinkAnimationClock = frames.CreateClock();
base.ApplyAnimationClock(UIElement.OpacityProperty, _blinkAnimationClock);
this.PositionChanged = (EventHandler <CaretPositionChangedEventArgs>)Delegate.Combine(this.PositionChanged, new EventHandler <CaretPositionChangedEventArgs>(this.CaretElement_PositionChanged));
if (handler == null)
{
handler = delegate
{
this.ConstructCaretGeometry();
};
}
base.SizeChanged += handler;
base.IsVisibleChanged += new DependencyPropertyChangedEventHandler(this.UIElement_VisibleChanged);
this.OverwriteMode = false;
}
/// <summary>
/// </summary>
public CaretElement(EditorView editorView)
{
SizeChangedEventHandler handler = null;
_editorView = editorView;
_caretPlacement = CaretPlacement.LeftOfCharacter;
_insertionPoint = new TextPoint(editorView.TextBuffer, 0);
_preferredVerticalPosition = _preferredHorizontalPosition = 0;
_textViewHelper = new TextViewHelper(_editorView);
this.ConstructCaretGeometry();
TextLine line = TextFormatter.Create().FormatLine(new DefaultLineGutterTextSource("W", TextFormattingRunProperties.DefaultProperties), 0, 10, new TextFormattingParagraphProperties(), null);
_defaultOverwriteCaretWidth = line.Width;
_overwriteCaretBrush = new SolidColorBrush(Colors.Gray);
_overwriteCaretBrush.Opacity = 0.5;
DoubleAnimationUsingKeyFrames frames = new DoubleAnimationUsingKeyFrames();
frames.BeginTime = new TimeSpan((long)0);
frames.RepeatBehavior = RepeatBehavior.Forever;
frames.KeyFrames.Add(new DiscreteDoubleKeyFrame(1, KeyTime.FromPercent(0)));
Int32 caretBlinkTime = User32.GetCaretBlinkTime();
if (caretBlinkTime > 0)
{
frames.KeyFrames.Add(new DiscreteDoubleKeyFrame(0, KeyTime.FromPercent(0.5)));
}
else
{
caretBlinkTime = 500;
}
frames.Duration = new Duration(new TimeSpan(0, 0, 0, 0, caretBlinkTime * 2));
_blinkAnimationClock = frames.CreateClock();
base.ApplyAnimationClock(UIElement.OpacityProperty, _blinkAnimationClock);
this.PositionChanged = (EventHandler<CaretPositionChangedEventArgs>)Delegate.Combine(this.PositionChanged, new EventHandler<CaretPositionChangedEventArgs>(this.CaretElement_PositionChanged));
if (handler == null)
{
handler = delegate
{
this.ConstructCaretGeometry();
};
}
base.SizeChanged += handler;
base.IsVisibleChanged += new DependencyPropertyChangedEventHandler(this.UIElement_VisibleChanged);
this.OverwriteMode = false;
}
private ICaretPosition CreateCaretPosition(Int32 characterIndex, CaretPlacement caretPlacement)
{
Span textElementSpan = _editorView.GetTextElementSpan(characterIndex);
return(new CaretPosition(textElementSpan.Start, (caretPlacement == CaretPlacement.LeftOfCharacter) ? textElementSpan.Start : textElementSpan.End, (textElementSpan.Length == 0) ? CaretPlacement.LeftOfCharacter : caretPlacement));
}
/// <summary>
/// </summary>
public ICaretPosition MoveTo(Int32 characterIndex, CaretPlacement caretPlacement)
{
if (_overwriteMode)
{
caretPlacement = CaretPlacement.LeftOfCharacter;
}
ICaretPosition oldPosition = this.Position;
Span textElementSpan = _editorView.GetTextElementSpan(characterIndex);
if (textElementSpan == null)
{
return oldPosition;
}
_caretPlacement = caretPlacement;
if ((_caretPlacement == CaretPlacement.RightOfCharacter) && (characterIndex < _editorView.TextBuffer.Length))
{
_insertionPoint = new TextPoint(_editorView.TextBuffer, textElementSpan.End);
}
else
{
_insertionPoint = new TextPoint(_editorView.TextBuffer, textElementSpan.Start);
}
ICaretPosition position = this.Position;
this.PositionChanged(this, new CaretPositionChangedEventArgs(oldPosition, position));
return position;
}
private ICaretPosition CreateCaretPosition(Int32 characterIndex, CaretPlacement caretPlacement)
{
Span textElementSpan = _editorView.GetTextElementSpan(characterIndex);
return new CaretPosition(textElementSpan.Start, (caretPlacement == CaretPlacement.LeftOfCharacter) ? textElementSpan.Start : textElementSpan.End, (textElementSpan.Length == 0) ? CaretPlacement.LeftOfCharacter : caretPlacement);
}
