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