protected void Scrollable_ShouldScrollTo(Rect shape)
{
if (!ShouldHandleScrollRequestsFromContent)
{
return;
}
//Rect absolute = new Rect(shape);
//absolute.Location.Add(-Scrollable.DeltaX, -Scrollable.DeltaY);
Rect.RectangleRelativePosition relativePosition = shape.RelativeToRectY(Scrollable.ViewPort);
if (relativePosition != Rect.RectangleRelativePosition.FullyInside &&
relativePosition != Rect.RectangleRelativePosition.FullyContaining)
{
ScrollContentXY(shape.Location.X, shape.Location.Y);
}
}
private void MyRootControl_ShouldScrollTo(Rect shape)
{
const int horizBorder = 150;
const int verticBorder = 50;
Rect.RectangleRelativePosition RelativePosition = shape.RelativeToRectY(MainShape.Scrollable.ViewPort);
int x = shape.Location.X;
int y = shape.Location.Y;
int totalHeight = RootBlock.MyRootControl.Bounds.Size.Y;
int viewportLeft = MainShape.Scrollable.ViewPort.Location.X;
int viewportRight = MainShape.Scrollable.ViewPort.Right;
int viewportHeight = MainShape.Scrollable.ViewPort.Size.Y;
int viewportTop = MainShape.Scrollable.ViewPort.Top;
bool shouldScrollX = false;
bool shouldScrollY = false;
int scrollToX = 0;
int scrollToY = 0;
switch (RelativePosition)
{
case Rect.RectangleRelativePosition.FullyContaining:
case Rect.RectangleRelativePosition.IntersectingBeginning:
case Rect.RectangleRelativePosition.FullyBefore:
case Rect.RectangleRelativePosition.IntersectingEnd:
case Rect.RectangleRelativePosition.FullyAfter:
shouldScrollY = true;
scrollToY = y - verticBorder;
break;
case Rect.RectangleRelativePosition.FullyInside:
default:
if (totalHeight > viewportHeight &&
viewportHeight > 300 &&
totalHeight - y < 300)
{
shouldScrollY = true;
scrollToY = totalHeight;
}
else if (y > viewportTop && y < viewportTop + verticBorder)
{
shouldScrollY = true;
scrollToY = y - verticBorder;
}
break;
}
if (x < viewportLeft + horizBorder)
{
shouldScrollX = true;
scrollToX = x - horizBorder;
}
if (x > viewportRight - horizBorder)
{
shouldScrollX = true;
scrollToX = x + horizBorder;
}
if (shouldScrollX && shouldScrollY)
{
MainShape.ScrollContentXY(scrollToX, scrollToY);
}
else if (shouldScrollX)
{
MainShape.ScrollContentX(scrollToX);
}
else if (shouldScrollY)
{
MainShape.ScrollContentY(scrollToY);
}
}
