private void Scroll(Point position)
{
RectangleF imageRectangle = form.CanvasRectangle.Scale(form.ZoomFactor);
float inMousePosition, inClientAreaSize, inImageSize;
if (Orientation == Orientation.Horizontal)
{
inMousePosition = position.X;
inClientAreaSize = form.ClientArea.Width;
inImageSize = imageRectangle.Width;
}
else
{
inMousePosition = position.Y;
inClientAreaSize = form.ClientArea.Height;
inImageSize = imageRectangle.Height;
}
float mousePositionLocal = inMousePosition - Margin - Padding;
float trackLength = inClientAreaSize - (Margin * 2) - (Padding * 2) - Thickness;
float trackLengthInternal = trackLength - (Padding * 2);
float centerOffsetNew = ((trackLengthInternal / 2.0f) - mousePositionLocal) / trackLengthInternal * inImageSize;
Vector2 canvasCenterOffset = Orientation == Orientation.Horizontal ?
new Vector2(centerOffsetNew, form.CanvasCenterOffset.Y) :
new Vector2(form.CanvasCenterOffset.X, centerOffsetNew);
form.PanToOffset(canvasCenterOffset);
}