protected void ReplaceElement(IPanelGroupElement beforeElement, IPanelGroupElement afterElement)
{
if (beforeElement == afterElement)
{
return;
}
if (beforeElement.IsNull() || afterElement.IsNull())
{
Debug.LogError("Invalid argument!");
return;
}
int index = elements.IndexOf(beforeElement);
if (index < 0)
{
Debug.LogError("Invalid index!");
return;
}
if (beforeElement.Group == this)
{
Canvas.UnanchoredPanelGroup.AddElement(beforeElement);
}
AddElementAt(index, afterElement);
}
protected void TryChangeSizeOf(IPanelGroupElement element, PanelDirection direction, float deltaSize)
{
if (element.IsNull() || deltaSize <= MIN_SIZE_TOLERANCE || element.GetSurroundingElement(direction).IsNull())
{
return;
}
resizePropsIndex = 0;
IPanelGroupElement surroundingElement = element.GetSurroundingElement(direction);
element = surroundingElement.GetSurroundingElement(direction.Opposite());
AddResizeProperty(element);
float deltaMovement = TryChangeSizeOfInternal(surroundingElement, direction, deltaSize);
if (resizePropsIndex > 1)
{
ResizeElementHelper(0, direction, deltaMovement);
for (int i = 0; i < resizePropsIndex; i++)
{
ElementDirtyProperties properties = resizeProperties[i];
Vector2 position = properties.element.Position + new Vector2(properties.posX, properties.posY);
Vector2 size = properties.element.Size + new Vector2(properties.sizeX, properties.sizeY);
UpdateBoundsOf(properties.element, position, size);
}
}
}
protected void AddElementAt(int index, IPanelGroupElement element)
{
if (element.IsNull())
{
Debug.LogError("Invalid argument!");
return;
}
if (index < 0 || index > elements.Count)
{
Debug.LogError("Invalid index!");
return;
}
int elementIndex = elements.IndexOf(element);
if (elementIndex >= 0 && element.Group != this)
{
if (index > elementIndex)
{
index--;
}
elements.RemoveAt(elementIndex);
elementIndex = -1;
}
if (elementIndex == index)
{
return;
}
if (element.Group != null)
{
element.Group.SetDirty();
}
if (elementIndex < 0)
{
// Element not present in this group, add it
elements.Insert(index, element);
SetGroupFor(element, this);
}
else if (elementIndex != index)
{
// Element already present in this group, just change its index
if (elementIndex > index)
{
elementIndex++;
}
elements.Insert(index, element);
elements.RemoveAt(elementIndex);
}
SetDirty();
}
protected float TryChangeSizeOfInternal(IPanelGroupElement element, PanelDirection direction, float deltaSize)
{
int currResizePropsIndex = resizePropsIndex;
AddResizeProperty(element);
float thisFlexibleSize;
if (direction == PanelDirection.Left || direction == PanelDirection.Right)
{
thisFlexibleSize = element.Size.x - element.MinSize.x;
}
else
{
thisFlexibleSize = element.Size.y - element.MinSize.y;
}
if (thisFlexibleSize > MIN_SIZE_TOLERANCE)
{
if (thisFlexibleSize >= deltaSize)
{
thisFlexibleSize = deltaSize;
deltaSize = 0f;
}
else
{
deltaSize -= thisFlexibleSize;
}
ResizeElementHelper(currResizePropsIndex, direction.Opposite(), -thisFlexibleSize);
}
else
{
thisFlexibleSize = 0f;
}
if (deltaSize > MIN_SIZE_TOLERANCE)
{
IPanelGroupElement surrounding = element.GetSurroundingElement(direction);
if (!surrounding.IsNull())
{
if (surrounding.Group != element.Group)
{
AddResizeProperty(surrounding.GetSurroundingElement(direction.Opposite()));
}
float deltaMovement = TryChangeSizeOfInternal(surrounding, direction, deltaSize);
if (deltaMovement > MIN_SIZE_TOLERANCE)
{
if (surrounding.Group == element.Group)
{
if (direction == PanelDirection.Left)
{
resizeProperties[currResizePropsIndex].posX -= deltaMovement;
}
else if (direction == PanelDirection.Top)
{
resizeProperties[currResizePropsIndex].posY += deltaMovement;
}
else if (direction == PanelDirection.Right)
{
resizeProperties[currResizePropsIndex].posX += deltaMovement;
}
else
{
resizeProperties[currResizePropsIndex].posY -= deltaMovement;
}
thisFlexibleSize += deltaMovement;
}
else
{
ResizeElementHelper(currResizePropsIndex + 1, direction, deltaMovement);
}
}
else
{
resizePropsIndex = currResizePropsIndex + (thisFlexibleSize == 0 ? 0 : 1);
}
}
else if (thisFlexibleSize == 0f)
{
resizePropsIndex = currResizePropsIndex;
}
}
return(thisFlexibleSize);
}