/// <summary>
/// Constructs a new selection Element that is bound to the specified editor canvas
/// </summary>
/// <param name="wpfTextView">
/// The WPF Text View that hosts this caret
/// </param>
public SkiaTextCaret(
SkiaTextView wpfTextView, SkiaTextSelection selection,
ISmartIndentationService smartIndentationService,
IEditorFormatMap editorFormatMap,
//IClassificationFormatMap classificationFormatMap,
GuardedOperations guardedOperations)
{
// Verify
Debug.Assert(wpfTextView != null);
_regularBrush = new SKPaint()
{
Color = SKColors.Red, Typeface = wpfTextView.Typeface, TextSize = 24, LcdRenderText = true, IsAntialias = true, SubpixelText = true
};
_wpfTextView = wpfTextView;
_selection = selection;
_guardedOperations = guardedOperations;
_smartIndentationService = smartIndentationService;
// Set up initial values
_caretAffinity = PositionAffinity.Successor;
_insertionPoint = new VirtualSnapshotPoint(new SnapshotPoint(_wpfTextView.TextSnapshot, 0));
//// Set the regular caret brush
//_editorFormatMap = editorFormatMap;
//// store information related to classifications
//_classificationFormatMap = classificationFormatMap;
this.SubscribeEvents();
this.UpdateDefaultBrushes();
this.UpdateRegularCaretBrush();
this.UpdateOverwriteCaretBrush();
//Set the default values for the caret to be what they should be for a hidden caret that is not in overwrite mode.
_caretBrush = _regularBrush;
// Get the caret blink time from the system. If the caret is set not to flash, the return value
// will be -1
_blinkInterval = CaretBlinkTimeManager.GetCaretBlinkTime();
if (_blinkInterval > 0)
{
_blinkTimer = new DispatcherTimer(new TimeSpan(0, 0, 0, 0, _blinkInterval), OnTimerElapsed);
}
this.UpdateBlinkTimer();
}
void Initialize()
{
_bufferGraph = _factoryService.BufferGraphFactoryService.CreateBufferGraph(this.TextViewModel.VisualBuffer);
_editorFormatMap = _factoryService.EditorFormatMapService.GetEditorFormatMap(this);
_baseLayer = new ViewStack(_factoryService.OrderedViewLayerDefinitions, this);
_overlayLayer = new ViewStack(_factoryService.OrderedOverlayLayerDefinitions, this, isOverlayLayer: true);
// Create selection and make sure it's created before the caret as the caret relies on the selection being
// available in its constructor
_selection = new SkiaTextSelection(this, _editorFormatMap, _factoryService.GuardedOperations);
// Create caret
_caretElement = new SkiaTextCaret(this, _selection,
_factoryService.SmartIndentationService,
_editorFormatMap,
_factoryService.GuardedOperations);
}