public void HighlightElement(View viewToHighlight, SKCanvasView skCanvasView, Layout <View> formLayout)
{
var layoutChildren = formLayout.Children;
if (_highlightState == null)
{
_highlightState = new HighlightState()
{
HighlightPath = HighlightPath.Create(skCanvasView, layoutChildren, _highlightSettings.StrokeWidth)
};
}
var highlightPath = _highlightState.HighlightPath;
var currHighlightViewId = _highlightState.CurrHighlightedViewId;
var iViewIdToHighlight = highlightPath.GetViewId(layoutChildren, viewToHighlight);
if (currHighlightViewId == iViewIdToHighlight)
{
return;
}
var fromDash = currHighlightViewId != -1
? _highlightState.StrokeDash
: new StrokeDash(highlightPath.GetDashForView(layoutChildren, iViewIdToHighlight));
_highlightState.CurrHighlightedViewId = iViewIdToHighlight;
var toDash = new StrokeDash(highlightPath.GetDashForView(layoutChildren, viewToHighlight));
DrawDash(skCanvasView, fromDash, toDash);
}
public void Invalidate(SKCanvasView skCanvasView, Layout <View> formLayout)
{
if (_highlightState == null)
{
return;
}
var viewToHighlight = _highlightState.HighlightPath.GetView(formLayout.Children, _highlightState.CurrHighlightedViewId);
_highlightState = null;
HighlightElement(viewToHighlight, skCanvasView, formLayout);
}