public virtual Size ScrollOffsetForChildVisible(RadElement childElement, Point currentScrollValue)
{
int childIndex = this.Children.IndexOf(childElement);
if (childIndex < 0 || childIndex >= this.Children.Count)
{
return(Size.Empty);
}
Rectangle clientRect = new Rectangle(Point.Empty, this.Size);
Rectangle childRect = childElement.FullRectangle;
childRect.Offset((int)Math.Round(this.PositionOffset.Width), (int)Math.Round(this.PositionOffset.Height));
Size childOffset = RadCanvasViewport.CalcMinOffset(childRect, clientRect);
Size viewportOffset = new Size(-childOffset.Width, -childOffset.Height);
if (this.Orientation == System.Windows.Forms.Orientation.Vertical)
{
viewportOffset.Height = ConvertPixelOffsetToIndexOffset(currentScrollValue.Y, childIndex, viewportOffset.Height);
}
else
{
viewportOffset.Width = ConvertPixelOffsetToIndexOffset(currentScrollValue.X, childIndex, viewportOffset.Width);
}
return(viewportOffset);
}
public void ScrollElementIntoView(RadElement childElement)
{
if (childElement == null)
{
return;
}
if (this.UseNewLayoutSystem)
{
this.UpdateLayout();
}
if (this.UsePhysicalScrolling)
{
Rectangle viewportRect = new Rectangle(Point.Empty, this.viewportSize);
Rectangle childRect = childElement.FullBoundingRectangle;
childRect.Offset((int)Math.Round(this.viewport.PositionOffset.Width),
(int)Math.Round(this.viewport.PositionOffset.Height));
Size childOffset = RadCanvasViewport.CalcMinOffset(childRect, viewportRect);
ScrollWith(-childOffset.Width, -childOffset.Height);
}
else
{
if (this.viewport != null)
{
Size offset = ((IRadScrollViewport)this.viewport).ScrollOffsetForChildVisible(childElement, this.Value);
ScrollWith(offset.Width, offset.Height);
}
}
}
public void ScrollElementIntoView(RadElement childElement)
{
if (childElement == null)
{
return;
}
this.UpdateLayout();
if (this.UsePhysicalScrolling)
{
Rectangle dest = new Rectangle(Point.Empty, this.viewportSize);
Rectangle src = new Rectangle(childElement.BoundingRectangle.Location, Size.Add(childElement.BoundingRectangle.Size, childElement.Margin.Size));
src.Offset((int)Math.Round((double)this.viewport.PositionOffset.Width), (int)Math.Round((double)this.viewport.PositionOffset.Height));
Size size = RadCanvasViewport.CalcMinOffset(src, dest);
this.ScrollWith(-size.Width, -size.Height);
}
else
{
if (this.viewport == null)
{
return;
}
Size size = ((IRadScrollViewport)this.viewport).ScrollOffsetForChildVisible(childElement, this.Value);
this.ScrollWith(size.Width, size.Height);
}
}
public virtual Size ScrollOffsetForChildVisible(
RadElement childElement,
Point currentScrollValue)
{
int indexToOffset = this.Children.IndexOf(childElement);
if (indexToOffset < 0 || indexToOffset >= this.Children.Count)
{
return(Size.Empty);
}
Rectangle dest = new Rectangle(Point.Empty, this.Size);
Rectangle src = new Rectangle(childElement.BoundingRectangle.Location, Size.Add(childElement.BoundingRectangle.Size, childElement.Margin.Size));
src.Offset((int)Math.Round((double)this.PositionOffset.Width), (int)Math.Round((double)this.PositionOffset.Height));
Size size1 = RadCanvasViewport.CalcMinOffset(src, dest);
Size size2 = new Size(-size1.Width, -size1.Height);
if (this.Orientation == Orientation.Vertical)
{
size2.Height = this.ConvertPixelOffsetToIndexOffset(currentScrollValue.Y, indexToOffset, size2.Height);
}
else
{
size2.Width = this.ConvertPixelOffsetToIndexOffset(currentScrollValue.X, indexToOffset, size2.Width);
}
return(size2);
}
public override Size ScrollOffsetForChildVisible(RadElement childElement, Point currentScrollValue)
{
Rectangle clientRect = new Rectangle(Point.Empty, this.Size);
Rectangle childRect = childElement.Bounds;
childRect.Offset((int)Math.Round(this.PositionOffset.Width), (int)Math.Round(this.PositionOffset.Height));
Size childOffset = RadCanvasViewport.CalcMinOffset(childRect, clientRect);
Size viewportOffset = new Size(-childOffset.Width, -childOffset.Height);
return(viewportOffset);
}
public virtual Size ScrollOffsetForChildVisible(
RadElement childElement,
Point currentScrollValue)
{
Rectangle dest = new Rectangle(Point.Empty, this.Size);
Rectangle src = new Rectangle(childElement.BoundingRectangle.Location, Size.Add(childElement.BoundingRectangle.Size, childElement.Margin.Size));
src.Offset((int)Math.Round((double)this.PositionOffset.Width), (int)Math.Round((double)this.PositionOffset.Height));
Size size = RadCanvasViewport.CalcMinOffset(src, dest);
return(new Size(-size.Width, -size.Height));
}