protected float GetExpandedHeight()
{
if (this.m_LayoutElement == null)
{
return(this.m_MinHeight);
}
float originalPrefH = this.m_LayoutElement.preferredHeight;
this.m_LayoutElement.preferredHeight = -1f;
//The RectTransform's sizeDelta is updated at the second frame by default.If you don't force it to update,you'll get (0,0) at the first frame(On the Start)
LayoutRebuilder.ForceRebuildLayoutImmediate(this.m_RectTransform);
float h = LayoutUtility.GetPreferredHeight(this.m_RectTransform);
this.m_LayoutElement.preferredHeight = originalPrefH;
return(h);
}
public virtual void SetLayoutHorizontal()
{
Rect rect;
this.m_Tracker.Clear();
if (this.m_HSliderExpand || this.m_VSliderExpand)
{
this.m_Tracker.Add(this, this.viewRect, DrivenTransformProperties.AnchoredPositionX | DrivenTransformProperties.AnchoredPositionY | DrivenTransformProperties.AnchorMinX | DrivenTransformProperties.AnchorMinY | DrivenTransformProperties.AnchorMaxX | DrivenTransformProperties.AnchorMaxY | DrivenTransformProperties.SizeDeltaX | DrivenTransformProperties.SizeDeltaY | DrivenTransformProperties.AnchoredPosition | DrivenTransformProperties.AnchorMin | DrivenTransformProperties.AnchorMax | DrivenTransformProperties.Anchors | DrivenTransformProperties.SizeDelta);
this.viewRect.anchorMin = Vector2.zero;
this.viewRect.anchorMax = Vector2.one;
this.viewRect.sizeDelta = Vector2.zero;
this.viewRect.anchoredPosition = Vector2.zero;
LayoutRebuilder.ForceRebuildLayoutImmediate(this.content);
rect = this.viewRect.rect;
Vector3 vector3 = rect.center;
rect = this.viewRect.rect;
this.m_ViewBounds = new Bounds(vector3, rect.size);
this.m_ContentBounds = this.GetBounds();
}
if (this.m_VSliderExpand && this.vScrollingNeeded)
{
this.viewRect.sizeDelta = new Vector2(-(this.m_VSliderWidth + this.m_VerticalScrollbarSpacing), this.viewRect.sizeDelta.y);
LayoutRebuilder.ForceRebuildLayoutImmediate(this.content);
rect = this.viewRect.rect;
Vector3 vector31 = rect.center;
rect = this.viewRect.rect;
this.m_ViewBounds = new Bounds(vector31, rect.size);
this.m_ContentBounds = this.GetBounds();
}
if (this.m_HSliderExpand && this.hScrollingNeeded)
{
this.viewRect.sizeDelta = new Vector2(this.viewRect.sizeDelta.x, -(this.m_HSliderHeight + this.m_HorizontalScrollbarSpacing));
rect = this.viewRect.rect;
Vector3 vector32 = rect.center;
rect = this.viewRect.rect;
this.m_ViewBounds = new Bounds(vector32, rect.size);
this.m_ContentBounds = this.GetBounds();
}
if (this.m_VSliderExpand && this.vScrollingNeeded && this.viewRect.sizeDelta.x == 0f && this.viewRect.sizeDelta.y < 0f)
{
this.viewRect.sizeDelta = new Vector2(-(this.m_VSliderWidth + this.m_VerticalScrollbarSpacing), this.viewRect.sizeDelta.y);
}
}
private void Rebuilder()
{
LayoutRebuilder.ForceRebuildLayoutImmediate(rect);
}
