public void SetHorizontalOffset(double offset)
{
var extentWidth = ExtentWidth;
var viewportWidth = ViewportWidth;
var scrollX = ValidateInputOffset(offset, 0, extentWidth - viewportWidth);
if (!NumericExtensions.AreClose(HorizontalOffset, scrollX))
{
HorizontalOffset = scrollX;
}
UpdateTransform();
}
public void SetVerticalOffset(double offset)
{
var extentHeight = ExtentHeight;
var viewportHeight = ViewportHeight;
var scrollY = ValidateInputOffset(offset, 0, extentHeight - viewportHeight);
if (!NumericExtensions.AreClose(VerticalOffset, scrollY))
{
VerticalOffset = scrollY;
}
UpdateTransform();
}
internal bool SetHorizontalOffsetInternal(double offset)
{
var extentWidth = ExtentWidth;
var viewportWidth = ViewportWidth;
var scrollX = ValidateInputOffset(offset, 0, extentWidth - viewportWidth);
if (!NumericExtensions.AreClose(HorizontalOffset, scrollX))
{
HorizontalOffset = scrollX;
}
UpdateTransform();
return(scrollX == offset);
}
internal bool SetVerticalOffsetInternal(double offset)
{
var extentHeight = ExtentHeight;
var viewportHeight = ViewportHeight;
var scrollY = ValidateInputOffset(offset, 0, extentHeight - viewportHeight);
if (!NumericExtensions.AreClose(VerticalOffset, scrollY))
{
VerticalOffset = scrollY;
}
UpdateTransform();
return(scrollY == offset);
}
internal bool Set(
double?horizontalOffset = null,
double?verticalOffset = null,
float?zoomFactor = null,
bool disableAnimation = true,
bool isIntermediate = false)
{
var success = true;
if (horizontalOffset is double hOffset)
{
var extentWidth = ExtentWidth;
var viewportWidth = ViewportWidth;
var scrollX = ValidateInputOffset(hOffset, 0, extentWidth - viewportWidth);
success &= scrollX == hOffset;
if (!NumericExtensions.AreClose(HorizontalOffset, scrollX))
{
HorizontalOffset = scrollX;
}
}
if (verticalOffset is double vOffset)
{
var extentHeight = ExtentHeight;
var viewportHeight = ViewportHeight;
var scrollY = ValidateInputOffset(vOffset, 0, extentHeight - viewportHeight);
success &= scrollY == vOffset;
if (!NumericExtensions.AreClose(VerticalOffset, scrollY))
{
VerticalOffset = scrollY;
}
}
Apply(disableAnimation, isIntermediate);
return(success);
}
