protected override void OnWindowPositionChanged(Rect rcBoundingBox)
{
base.OnWindowPositionChanged(rcBoundingBox);
if (ParentScrollViewer == null)
{
return;
}
GeneralTransform tr = RootVisual.TransformToDescendant(ParentScrollViewer);
var scrollRect = new Rect(new Size(ParentScrollViewer.ViewportWidth, ParentScrollViewer.ViewportHeight));
var intersect = Rect.Intersect(scrollRect, tr.TransformBounds(rcBoundingBox));
if (!intersect.IsEmpty)
{
tr = ParentScrollViewer.TransformToDescendant(this);
intersect = tr.TransformBounds(intersect);
}
else
{
intersect = new Rect();
}
int x1 = (int)Math.Round(intersect.Left);
int y1 = (int)Math.Round(intersect.Top);
int x2 = (int)Math.Round(intersect.Right);
int y2 = (int)Math.Round(intersect.Bottom);
SetRegion(x1, y1, x2, y2);
}
protected override void OnWindowPositionChanged(Rect rcBoundingBox)
{
DpiScale dpiScale = VisualTreeHelper.GetDpi(this);
base.OnWindowPositionChanged(rcBoundingBox);
Rect newRect = ScaleRectDownFromDPI(rcBoundingBox, dpiScale);
Rect finalRect;
if (ParentScrollViewer != null)
{
ParentScrollViewer.ScrollChanged += ParentScrollViewer_ScrollChanged;
ParentScrollViewer.SizeChanged += ParentScrollViewer_SizeChanged;
ParentScrollViewer.Loaded += ParentScrollViewer_Loaded;
}
if (Scrolling || Resizing)
{
if (ParentScrollViewer == null)
{
return;
}
MatrixTransform tr = RootVisual.TransformToDescendant(ParentScrollViewer) as MatrixTransform;
var scrollRect = new Rect(new Size(ParentScrollViewer.ViewportWidth, ParentScrollViewer.ViewportHeight));
var c = tr.TransformBounds(newRect);
var intersect = Rect.Intersect(scrollRect, c);
if (!intersect.IsEmpty)
{
tr = ParentScrollViewer.TransformToDescendant(this) as MatrixTransform;
intersect = tr.TransformBounds(intersect);
finalRect = ScaleRectUpToDPI(intersect, dpiScale);
}
else
{
finalRect = intersect = new Rect();
}
int x1 = (int)Math.Round(finalRect.X);
int y1 = (int)Math.Round(finalRect.Y);
int x2 = (int)Math.Round(finalRect.Right);
int y2 = (int)Math.Round(finalRect.Bottom);
SetRegion(x1, y1, x2, y2);
this.Scrolling = false;
this.Resizing = false;
}
LocationChanged?.Invoke(this, new EventArgs());
}
protected override void OnWindowPositionChanged(Rect rcBoundingBox)
{
DpiScale dpiScale = new DpiScale()
{
DpiScaleX = RenderSettings.dpiScaleX, DpiScaleY = RenderSettings.dpiScaleY
};
base.OnWindowPositionChanged(rcBoundingBox);
if (ParentScrollViewer == null)
{
return;
}
Rect newRect = ScaleRectDownFromDPI(rcBoundingBox, dpiScale);
GeneralTransform tr = RootVisual.TransformToDescendant(ParentScrollViewer);
var scrollRect = new Rect(new Size(ParentScrollViewer.ViewportWidth, ParentScrollViewer.ViewportHeight));
var intersect = Rect.Intersect(scrollRect, tr.TransformBounds(newRect));
if (!intersect.IsEmpty)
{
tr = ParentScrollViewer.TransformToDescendant(this);
intersect = tr.TransformBounds(intersect);
intersect = ScaleRectUpToDPI(intersect, dpiScale);
}
else
{
intersect = new Rect();
}
int x1 = (int)Math.Round(intersect.Left);
int y1 = (int)Math.Round(intersect.Top);
int x2 = (int)Math.Round(intersect.Right);
int y2 = (int)Math.Round(intersect.Bottom);
SetRegion(x1, y1, x2, y2);
}
