private void EffectLayer_Unloaded(object sender, RoutedEventArgs e)
{
// Explicitly remove references to allow the Win2D controls to get garbage collected
if (canvas != null)
{
canvas.Draw -= OnDraw;
canvas.RemoveFromVisualTree();
canvas = null;
}
if (_eg != null)
{
_eg.Dispose(); _eg = null;
}
_paths.Clear();
_uielements.Clear();
_uielements.Clear();
_bkgLayer.Content = null;
}
public void InitLayer(double canvasWidth, double canvasHeight, double offsetX = 0, double offsetY = 0, EffectGraphType graphType = EffectGraphType.Shadow)
{
return;
if (graphType == EffectGraphType.Shadow)
{
_eg = new ShadowEffectGraph();
}
else if (graphType == EffectGraphType.Glow)
{
_eg = new GlowEffectGraph();
}
ParentWidth = canvasWidth - offsetX;
ParentHeight = canvasHeight - offsetY;
//x
canvas = new CanvasControl();
if (ShowGlowArea)
{
canvas.ClearColor = Windows.UI.Colors.CornflowerBlue;
}
canvas.Width = ParentWidth + ExpandAmount;
canvas.Height = ParentHeight + ExpandAmount;
//if the control begins invisible or hidden then it will not have rendered its tree yet
//we can only do this init if bkglayer exists, which means only after OnApplyTemplate
//.. this is such a hack BUT it's a chicken and egg problem, sometimes the InitLayer gets
//called too early :(
if (_bkgLayer == null)
{
doDlayedInitBkgLayerLaterAfterOnApplyTemplate = true;
}
else
{
InitBkgLayer(offsetX, offsetY);
}
}
private void EffectLayer_Unloaded(object sender, RoutedEventArgs e)
{
// Explicitly remove references to allow the Win2D controls to get garbage collected
if (canvas != null)
{
canvas.Draw -= OnDraw;
canvas.RemoveFromVisualTree();
canvas = null;
}
if (_eg != null) { _eg.Dispose(); _eg = null; }
_paths.Clear();
_uielements.Clear();
_uielements.Clear();
_bkgLayer.Content = null;
}
public void InitLayer(double canvasWidth, double canvasHeight, double offsetX = 0, double offsetY = 0, EffectGraphType graphType = EffectGraphType.Shadow) {
return;
if(graphType == EffectGraphType.Shadow) _eg = new ShadowEffectGraph();
else if (graphType == EffectGraphType.Glow) _eg = new GlowEffectGraph();
ParentWidth = canvasWidth - offsetX;
ParentHeight = canvasHeight - offsetY;
//x
canvas = new CanvasControl();
if (ShowGlowArea) canvas.ClearColor = Windows.UI.Colors.CornflowerBlue;
canvas.Width = ParentWidth + ExpandAmount;
canvas.Height = ParentHeight + ExpandAmount;
//if the control begins invisible or hidden then it will not have rendered its tree yet
//we can only do this init if bkglayer exists, which means only after OnApplyTemplate
//.. this is such a hack BUT it's a chicken and egg problem, sometimes the InitLayer gets
//called too early :(
if (_bkgLayer == null) doDlayedInitBkgLayerLaterAfterOnApplyTemplate = true;
else InitBkgLayer(offsetX, offsetY);
}
