private bool SetFrame(float left, float top, float right, float bottom)
{
bool changed = false;
if (_layoutPositionData.Left != left ||
_layoutPositionData.Right != right ||
_layoutPositionData.Top != top ||
_layoutPositionData.Bottom != bottom)
{
changed = true;
float oldWidth = _layoutPositionData.Right - _layoutPositionData.Left;
float oldHeight = _layoutPositionData.Bottom - _layoutPositionData.Top;
float newWidth = right - left;
float newHeight = bottom - top;
bool sizeChanged = (newWidth != oldWidth) || (newHeight != oldHeight);
// Set condition to layout changed as currently unspecified. Add, Remove would have specified a condition.
if (ConditionForAnimation.HasFlag(TransitionCondition.Unspecified))
{
ConditionForAnimation = TransitionCondition.LayoutChanged;
}
// Store new layout position data
_layoutPositionData = new LayoutData(this, ConditionForAnimation, left, top, right, bottom);
Window.Instance.LayoutController.AddTransitionDataEntry(_layoutPositionData);
// Reset condition for animation ready for next transition when required.
ConditionForAnimation = TransitionCondition.Unspecified;
}
return(changed);
}
/// <summary>
/// Initialize the layout and allow derived classes to also perform any operations
/// </summary>
/// <param name="owner">Owner of this Layout.</param>
internal void AttachToOwner(View owner)
{
// Assign the layout owner.
Owner = owner;
OnAttachedToOwner();
// Add layout to parent layout if a layout container
View parent = Owner.GetParent() as View;
(parent?.Layout as LayoutGroup)?.Add(this);
// If Add or ChangeOnAdd then do not update condition
if (ConditionForAnimation.HasFlag(TransitionCondition.Unspecified))
{
ConditionForAnimation = TransitionCondition.LayoutChanged;
}
}