/// <summary>
/// Reset the viewport back to the upper left origin of the scrollable area
/// </summary>
public void Reset()
{
try
{
SuspendLayout();
if (autoLayout)
{
var savedScrollPosition = this.ScrollPosition;
this.ScrollPosition = Vector2.zero;
AutoArrange();
ScrollPosition = savedScrollPosition;
}
else
{
scrollPadding = ScrollPadding.ConstrainPadding();
var offset = (Vector3)calculateMinChildPosition();
offset -= new Vector3(scrollPadding.left, scrollPadding.top);
for (int i = 0; i < controls.Count; i++)
{
controls[i].RelativePosition -= offset;
}
scrollPosition = Vector2.zero;
}
Invalidate();
updateScrollbars();
}
finally
{
ResumeLayout();
}
}
private void AutoArrange()
{
SuspendLayout();
try
{
scrollPadding = ScrollPadding.ConstrainPadding();
flowPadding = FlowPadding.ConstrainPadding();
var x = (float)scrollPadding.left + (float)flowPadding.left - scrollPosition.x;
var y = (float)scrollPadding.top + (float)flowPadding.top - scrollPosition.y;
var maxWidth = 0f;
var maxHeight = 0f;
for (int i = 0; i < controls.Count; i++)
{
var child = controls[i];
if (!child.IsVisible || !child.enabled || !child.gameObject.activeSelf)
{
continue;
}
if (child == this.horzScroll || child == this.vertScroll)
{
continue;
}
if (this.wrapLayout)
{
if (flowDirection == LayoutDirection.Horizontal)
{
if (x + child.Width >= size.x - scrollPadding.right)
{
x = (float)scrollPadding.left + (float)flowPadding.left;
y += maxHeight;
maxHeight = 0f;
}
}
else
{
if (y + child.Height + flowPadding.vertical >= size.y - scrollPadding.bottom)
{
y = (float)scrollPadding.top + (float)flowPadding.top;
x += maxWidth;
maxWidth = 0f;
}
}
}
var childPosition = new Vector2(x, y);
child.RelativePosition = childPosition;
var xofs = child.Width + flowPadding.horizontal;
var yofs = child.Height + flowPadding.vertical;
maxWidth = Mathf.Max(xofs, maxWidth);
maxHeight = Mathf.Max(yofs, maxHeight);
if (flowDirection == LayoutDirection.Horizontal)
{
x += xofs;
}
else
{
y += yofs;
}
}
updateScrollbars();
}
finally
{
ResumeLayout();
}
}