public override object GetContext(IHitTestResult hitTestResult)
{
if (hitTestResult.Type == HitTestResultType.ViewTextAreaOverCharacter)
return GetContext(hitTestResult.View, hitTestResult.Offset);
return null;
}
public override object GetContext(IHitTestResult hitTestResult)
{
if (hitTestResult.Type == HitTestResultType.ViewTextAreaOverCharacter)
{
return(GetContext(hitTestResult.View, hitTestResult.Offset));
}
return(null);
}
/// <summary>
/// Returns an object describing the quick info context for the specified <see cref="IHitTestResult"/>, if any.
/// </summary>
/// <param name="hitTestResult">The <see cref="IHitTestResult"/> to examine.</param>
/// <returns>
/// An object describing the quick info context for the specified <see cref="IHitTestResult"/>, if any.
/// A <see langword="null"/> value indicates that no context is available.
/// </returns>
/// <remarks>
/// This method is called in response to mouse events.
/// </remarks>
public override object GetContext(IHitTestResult hitTestResult)
{
switch (hitTestResult.Type)
{
case HitTestResultType.ViewTextAreaOverCharacter:
// Over a character... this is what the default base method implementation does:
return(this.GetContext(hitTestResult.View, hitTestResult.Offset));
case HitTestResultType.ViewMargin:
// Over a margin
if (hitTestResult.ViewMargin.Key == EditorViewMarginKeys.LineNumber)
{
// Over the line number margin
LineNumberMarginContext context = new LineNumberMarginContext();
context.LineIndex = hitTestResult.Position.Line;
return(context);
}
break;
}
// No context
return(null);
}
/// <summary>
/// Updates the hit test info.
/// </summary>
/// <param name="result">The hit test result.</param>
private void UpdateHitTestInfo(IHitTestResult result)
{
StringBuilder text = new StringBuilder();
if (result != null)
{
text.AppendFormat("Snapshot version {0}{1}", result.Snapshot.Version.Number, Environment.NewLine);
if (result.View != null)
{
text.AppendFormat("Over '{0}' view{1}", this.GetPlacementName(result.View), Environment.NewLine);
}
switch (result.Type)
{
case HitTestResultType.Splitter: {
EditorViewSplitter splitter = result.VisualElement as EditorViewSplitter;
if (splitter != null)
{
text.AppendLine("Over view splitter");
}
break;
}
case HitTestResultType.ViewMargin:
text.AppendFormat("Over '{0}' margin{1}", result.ViewMargin.Key, Environment.NewLine);
text.AppendFormat("Closest text position is ({0},{1}){2}", result.Position.Line, result.Position.Character, Environment.NewLine);
break;
case HitTestResultType.ViewScrollBar: {
System.Windows.Controls.Primitives.ScrollBar scrollBar = result.VisualElement as System.Windows.Controls.Primitives.ScrollBar;
if (scrollBar != null)
{
text.AppendFormat("Over '{0}' scrollbar{1}", scrollBar.Orientation, Environment.NewLine);
}
break;
}
case HitTestResultType.ViewScrollBarBlock:
text.AppendLine("Over scroll bar block");
break;
case HitTestResultType.ViewScrollBarSplitter: {
ScrollBarSplitter splitter = result.VisualElement as ScrollBarSplitter;
if (splitter != null)
{
text.AppendLine("Over scroll bar splitter");
}
break;
}
case HitTestResultType.ViewScrollBarTray:
text.AppendLine("Over scroll bar tray (that can contain other controls like buttons)");
break;
case HitTestResultType.ViewTextArea:
text.AppendFormat("Not directly over any view line or character{0}", Environment.NewLine);
text.AppendFormat("Closest text position is ({0},{1}){2}", result.Position.Line, result.Position.Character, Environment.NewLine);
break;
case HitTestResultType.ViewTextAreaOverCharacter: {
ITextSnapshotReader reader = result.GetReader();
text.AppendFormat("Directly over offset {0} and text position ({1},{2}){3}", result.Offset, result.Position.Line, result.Position.Character, Environment.NewLine);
text.AppendFormat("Directly over character '{0}'{1}", reader.Character, Environment.NewLine);
IToken token = reader.Token;
if (token != null)
{
text.AppendFormat("Directly over token '{0}' with range ({1},{2})-({3},{4}){5}", token.Key,
token.StartPosition.Line, token.StartPosition.Character,
token.EndPosition.Line, token.EndPosition.Character, Environment.NewLine);
text.AppendFormat("Directly over token text '{0}'{1}", reader.TokenText, Environment.NewLine);
}
break;
}
case HitTestResultType.ViewTextAreaOverIntraTextSpacer:
text.AppendFormat("Over spacer '{0}' on document line {1}{2}", result.IntraTextSpacerTag, result.Position.Line, Environment.NewLine);
break;
case HitTestResultType.ViewTextAreaOverLine:
text.AppendFormat("Over whitespace at the end of document line {0}{1}", result.Position.Line, Environment.NewLine);
break;
default:
if (result.VisualElement != null)
{
text.AppendFormat("Over a '{0}' element{1}", result.VisualElement.GetType().FullName, Environment.NewLine);
}
else
{
text.AppendLine("No other hit test details available");
}
break;
}
}
else
{
text.AppendLine("Not over the SyntaxEditor");
}
resultsTextBox.Text = text.ToString();
}
/// <summary>
/// Occurs when the mouse moves over the control.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">A <see cref="MouseEventArgs"/> that contains the event data.</param>
private void OnSyntaxEditorMouseMove(object sender, MouseEventArgs e)
{
IHitTestResult result = editor.HitTest(e.GetPosition(editor));
this.UpdateHitTestInfo(result);
}
