//public override Rectangle GetElementBounds(int index)
//{
// //if (!UseVirtualLayout)
// return base.GetElementBounds(index);
// //var g = Target;
// //if (null == g || (index < 0) || (index >= g.NumberOfContentChildren))
// // return null;
// //return llv.getBounds(index);
//}
//public LayoutDirection Direction;
//public int HorizontalSpacing;
//public int VerticalSpacing;
#endregion
///<summary>
///</summary>
override internal void Measure()
{
GroupBase layoutTarget = Target;
if (null == layoutTarget)
return;
SizesAndLimit size = new SizesAndLimit();
bool justify = _verticalAlign == VerticalAlign.Justify;
int numElements = layoutTarget.NumberOfContentChildren; // How many elements there are in the target
int numElementsInLayout = numElements; // How many elements have includeInLayout == true, start off with numElements.
int requestedColumnCount = RequestedColumnCount;
int columnsMeasured = 0;
float preferredHeight = 0; // sum of the elt preferred heights
float preferredWidth = 0; // max of the elt preferred widths
float minHeight = 0; // sum of the elt minimum heights
float minWidth = 0; // max of the elt minimum widths
float? fixedColumnWidth = null;
if (!_variableColumnWidth)
fixedColumnWidth = _columnWidth; // may query typicalLayoutElement, elt at index=0
ILayoutElement element;
for (int i = 0; i < numElements; i++)
{
element = (ILayoutElement) layoutTarget.GetContentChildAt(i);
if (null == element || !element.IncludeInLayout)
{
numElementsInLayout--;
continue;
}
//Debug.Log(element + " measured. preferredHeight: " + preferredHeight);
// Consider the width of each element, inclusive of those outside
// the RequestedColumnCount range.
GetElementHeight(element, justify, size);
preferredHeight = Mathf.Max(preferredHeight, size.PreferredSize);
minHeight = Mathf.Max(minHeight, size.MinSize);
// Can we measure this row height?
if (RequestedColumnCount == -1 || columnsMeasured < RequestedColumnCount)
{
GetElementWidth(element, fixedColumnWidth, size);
preferredWidth += size.PreferredSize;
minWidth += size.MinSize;
columnsMeasured++;
}
}
// Calculate the total number of rows to measure
int columnsToMeasure = (_requestedColumnCount != -1) ? requestedColumnCount :
Mathf.Max(_requestedMinColumnCount, numElementsInLayout);
// Do we need to measure more rows?
if (columnsMeasured < columnsToMeasure)
{
// Use the typical element
element = TypicalLayoutElement;
if (null != element)
{
// Height
GetElementHeight(element, justify, size);
preferredHeight = Mathf.Max(preferredHeight, size.PreferredSize);
minHeight = Mathf.Max(minHeight, size.MinSize);
// Width
GetElementWidth(element, fixedColumnWidth, size);
preferredWidth += size.PreferredSize * (columnsToMeasure - columnsMeasured);
minWidth += size.MinSize * (columnsToMeasure - columnsMeasured);
columnsMeasured = columnsToMeasure;
}
}
// Add gaps
if (columnsMeasured > 1)
{
float hgap = _gap * (columnsMeasured - 1);
preferredWidth += hgap;
minWidth += hgap;
}
float hPadding = _paddingLeft + _paddingRight;
float vPadding = _paddingTop + _paddingBottom;
//layoutTarget.MeasuredHeight = preferredHeight + vPadding;
//layoutTarget.MeasuredWidth = preferredWidth + hPadding;
//layoutTarget.MeasuredMinHeight = minHeight + vPadding;
//layoutTarget.MeasuredMinWidth = minWidth + hPadding;
layoutTarget.MeasuredWidth = Mathf.Ceil(preferredWidth + hPadding);
layoutTarget.MeasuredHeight = Mathf.Ceil(preferredHeight + vPadding);
layoutTarget.MeasuredMinWidth = Mathf.Ceil(minWidth + hPadding);
layoutTarget.MeasuredMinHeight = Mathf.Ceil(minHeight + vPadding);
/*if (((Component)Target.Parent).Id == "horiz")
Debug.Log("Measured: " + Target.MeasuredWidth + ", " + Target.MeasuredHeight);*/
}
/**
*
* Fills in the result with preferred and min sizes of the element.
*/
private void GetElementWidth(ILayoutElement element, float? fixedColumnWidth, SizesAndLimit result)
{
// Calculate preferred height first, as it's being used to calculate min height below
float elementPreferredWidth = fixedColumnWidth ?? Mathf.Ceil(LayoutUtil.GetPreferredBoundsWidth((InvalidationManagerClient)element));
// Calculate min height
bool flexibleWidth = null != element.PercentWidth;
float elementMinWidth = flexibleWidth ? Mathf.Ceil(LayoutUtil.GetMinBoundsWidth((InvalidationManagerClient)element)) :
elementPreferredWidth;
result.PreferredSize = elementPreferredWidth;
result.MinSize = elementMinWidth;
}
/**
*
* Fills in the result with preferred and min sizes of the element.
*/
private void GetElementHeight(ILayoutElement element, bool justify, SizesAndLimit result)
{
// Calculate preferred width first, as it's being used to calculate min width
float elementPreferredHeight = Mathf.Ceil(LayoutUtil.GetPreferredBoundsHeight((InvalidationManagerClient)element));
// Calculate min width
bool flexibleHeight = null != element.PercentHeight || justify;
float elementMinHeight = flexibleHeight ? Mathf.Ceil(LayoutUtil.GetMinBoundsHeight((InvalidationManagerClient)element)) :
elementPreferredHeight;
result.PreferredSize = elementPreferredHeight;
result.MinSize = elementMinHeight;
}
/**
*
* Fills in the result with preferred and min sizes of the element.
*/
private void GetElementHeight(ILayoutElement element, float? fixedRowHeight, SizesAndLimit result)
{
// Calculate preferred height first, as it's being used to calculate min height below
float elementPreferredHeight = fixedRowHeight ?? Mathf.Ceil(LayoutUtil.GetPreferredBoundsHeight((InvalidationManagerClient) element));
// Calculate min height
bool flexibleHeight = null != element.PercentHeight;
float elementMinHeight = flexibleHeight ? Mathf.Ceil(LayoutUtil.GetMinBoundsHeight((InvalidationManagerClient) element)) :
elementPreferredHeight;
result.PreferredSize = elementPreferredHeight;
result.MinSize = elementMinHeight;
}