/// <summary>
/// <para>Handling for when the content is dragged.</para>
/// </summary>
/// <param name="eventData"></param>
public virtual void OnDrag(PointerEventData eventData)
{
Vector2 localPoint;
if (eventData.button != PointerEventData.InputButton.Left || !this.IsActive() || !RectTransformUtility.ScreenPointToLocalPointInRectangle(this.viewRect, eventData.position, eventData.pressEventCamera, out localPoint))
{
return;
}
this.UpdateBounds();
Vector2 vector2 = this.m_ContentStartPosition + (localPoint - this.m_PointerStartLocalCursor);
Vector2 offset = this.CalculateOffset(vector2 - this.m_Content.anchoredPosition);
Vector2 position = vector2 + offset;
if (this.m_MovementType == CHScrollRect.MovementType.Elastic)
{
if ((double)offset.x != 0.0)
{
position.x = position.x - CHScrollRect.RubberDelta(offset.x, this.m_ViewBounds.size.x);
}
if ((double)offset.y != 0.0)
{
position.y = position.y - CHScrollRect.RubberDelta(offset.y, this.m_ViewBounds.size.y);
}
}
this.SetContentAnchoredPosition(position);
}
private Bounds GetBounds()
{
if ((UnityEngine.Object) this.m_Content == (UnityEngine.Object)null)
{
return(new Bounds());
}
this.m_Content.GetWorldCorners(this.m_Corners);
Matrix4x4 worldToLocalMatrix = this.viewRect.worldToLocalMatrix;
return(CHScrollRect.InternalGetBounds(this.m_Corners, ref worldToLocalMatrix));
}
/// <summary>
/// <para>Calculate the bounds the ScrollRect should be using.</para>
/// </summary>
protected void UpdateBounds()
{
this.m_ViewBounds = new Bounds((Vector3)this.viewRect.rect.center, (Vector3)this.viewRect.rect.size);
this.m_ContentBounds = this.GetBounds();
if ((UnityEngine.Object) this.m_Content == (UnityEngine.Object)null)
{
return;
}
Vector3 size = this.m_ContentBounds.size;
Vector3 center = this.m_ContentBounds.center;
Vector2 pivot = this.m_Content.pivot;
CHScrollRect.AdjustBounds(ref this.m_ViewBounds, ref pivot, ref size, ref center);
this.m_ContentBounds.size = size;
this.m_ContentBounds.center = center;
if (this.movementType != CHScrollRect.MovementType.Clamped)
{
return;
}
Vector2 zero = Vector2.zero;
if ((double)this.m_ViewBounds.max.x > (double)this.m_ContentBounds.max.x)
{
zero.x = Math.Min(this.m_ViewBounds.min.x - this.m_ContentBounds.min.x, this.m_ViewBounds.max.x - this.m_ContentBounds.max.x);
}
else if ((double)this.m_ViewBounds.min.x < (double)this.m_ContentBounds.min.x)
{
zero.x = Math.Max(this.m_ViewBounds.min.x - this.m_ContentBounds.min.x, this.m_ViewBounds.max.x - this.m_ContentBounds.max.x);
}
if ((double)this.m_ViewBounds.min.y < (double)this.m_ContentBounds.min.y)
{
zero.y = Math.Max(this.m_ViewBounds.min.y - this.m_ContentBounds.min.y, this.m_ViewBounds.max.y - this.m_ContentBounds.max.y);
}
else if ((double)this.m_ViewBounds.max.y > (double)this.m_ContentBounds.max.y)
{
zero.y = Math.Min(this.m_ViewBounds.min.y - this.m_ContentBounds.min.y, this.m_ViewBounds.max.y - this.m_ContentBounds.max.y);
}
if ((double)zero.sqrMagnitude > 1.40129846432482E-45)
{
Vector3 contentPos = (Vector3)(this.m_Content.anchoredPosition + zero);
if (!this.m_Horizontal)
{
contentPos.x = this.m_Content.anchoredPosition.x;
}
if (!this.m_Vertical)
{
contentPos.y = this.m_Content.anchoredPosition.y;
}
CHScrollRect.AdjustBounds(ref this.m_ViewBounds, ref pivot, ref size, ref contentPos);
}
}
public void Awake()
{
_scrollRect = GetComponent <CHScrollRect>();
if (!_scrollingPanel)
{
_scrollingPanel = _scrollRect.content;
}
if (!_center)
{
Debug.LogError("Please define the RectTransform for the Center viewport of the scrollable area");
}
if (_arrayOfElements == null || _arrayOfElements.Length == 0)
{
var childCount = _scrollRect.content.childCount;
if (childCount > 0)
{
_arrayOfElements = new GameObject[childCount];
for (int i = 0; i < childCount; i++)
{
_arrayOfElements[i] = _scrollRect.content.GetChild(i).gameObject;
}
}
}
}
private void UpdateScrollbarVisibility()
{
CHScrollRect.UpdateOneScrollbarVisibility(this.vScrollingNeeded, this.m_Vertical, this.m_VerticalScrollbarVisibility, this.m_VerticalScrollbar);
CHScrollRect.UpdateOneScrollbarVisibility(this.hScrollingNeeded, this.m_Horizontal, this.m_HorizontalScrollbarVisibility, this.m_HorizontalScrollbar);
}
private Vector2 CalculateOffset(Vector2 delta)
{
return(CHScrollRect.InternalCalculateOffset(ref this.m_ViewBounds, ref this.m_ContentBounds, this.m_Horizontal, this.m_Vertical, this.m_MovementType, ref delta));
}
