protected Size GetDataSize(PreferredSizeData data, bool getRealSize)
{
Size size = data.PreferredSize;
if (getRealSize && (data.Element.AngleTransform != 0f || data.Element.ScaleTransform.Width != 1f || data.Element.ScaleTransform.Height != 1f))
{
size = data.Element.GetBoundingRectangle(size).Size;
}
return(size);
}
protected virtual int GetSumWidth(List <PreferredSizeData> list)
{
int sumWidth = 0;
for (int i = 0; i < list.Count; i++)
{
PreferredSizeData data = list[i];
sumWidth += data.PreferredSize.Width;
}
return(sumWidth);
}
protected virtual int GetSumHeight(List <PreferredSizeData> list)
{
int sumHeight = 0;
for (int i = 0; i < list.Count; i++)
{
PreferredSizeData data = list[i];
sumHeight += data.PreferredSize.Height;
}
return(sumHeight);
}
protected PreferredSizeData GetElementToExpand(List <PreferredSizeData> list, int sumWidth, int availableWidth)
{
PreferredSizeData elementToExpand = null;
for (int i = 2; ; i++)
{
PreferredSizeData lastElementToExpand = null;
bool advanceToNextPriority = false;
int maxSumWidth = 0;
foreach (PreferredSizeData data in list)
{
ICollapsibleElement collapsibleElement = data.Element as ICollapsibleElement;
if (collapsibleElement == null)
{
continue;
}
if (i < collapsibleElement.CollapseMaxSteps)
{
advanceToNextPriority = true;
}
if (collapsibleElement.CollapseStep != i)
{
continue;
}
//if (data.Element.Size.Width == collapsibleElement.ExpandedSize.Width)
// continue;
int newSumWidth = sumWidth - data.Element.Size.Width + collapsibleElement.ExpandedSize.Width;
if ((newSumWidth < availableWidth) && (newSumWidth > maxSumWidth))
{
lastElementToExpand = data;
maxSumWidth = newSumWidth;
}
}
if (lastElementToExpand != null)
{
elementToExpand = lastElementToExpand;
}
if (!advanceToNextPriority)
{
break;
}
}
return(elementToExpand);
}
protected virtual int GetMaxHeight(List <PreferredSizeData> list)
{
int maxHeight = 0;
for (int i = 0; i < list.Count; i++)
{
PreferredSizeData data = list[i];
if (maxHeight < data.PreferredSize.Height)
{
maxHeight = data.PreferredSize.Height;
}
}
return(maxHeight);
}
protected virtual int GetMaxWidth(List <PreferredSizeData> list)
{
int maxWidth = 0;
for (int i = 0; i < list.Count; i++)
{
PreferredSizeData data = list[i];
if (maxWidth < data.PreferredSize.Width)
{
maxWidth = data.PreferredSize.Width;
}
}
return(maxWidth);
}
protected virtual void FillPrefSizeList(List <PreferredSizeData> prefSizelist, Rectangle bounds)
{
// Split children in 2 lists: with own size and with AutoSizeMode == FitToAvailableSize
// Only for children with own size will be called GetPreferredSize()
List <RadElement> fitElementsList = new List <RadElement>();
int leftTopOffset = 0, rightBottomOffset = 0;
this.maxIntegralHeight = 0;
foreach (RadElement child in this.GetChildrenForLayout())
{
if (child.IsFitInSize())
{
fitElementsList.Add(child);
}
else
{
// The constructor of PreferredSizeData will call GetPreferredSize()
PreferredSizeData prefSizedata = new PreferredSizeData(child, bounds);
StripPosition pos = GetInvariantPosition(child.Alignment);
if (pos == StripPosition.First)
{
leftTopOffset += GetInvariantLength(prefSizedata.PreferredSize, child.Margin);
}
else if (pos == StripPosition.Last)
{
rightBottomOffset += GetInvariantLength(prefSizedata.PreferredSize, child.Margin);
}
prefSizelist.Add(prefSizedata);
this.maxIntegralWidth = Math.Max(this.maxIntegralWidth, prefSizedata.PreferredSize.Width);
this.maxIntegralHeight = Math.Max(this.maxIntegralHeight, prefSizedata.PreferredSize.Height);
}
}
// Calculate preferred size for "FitToAvailableSize" elements
Rectangle proposedRect = CalcProposedBounds(bounds, prefSizelist, leftTopOffset, rightBottomOffset);
// Call GetPreferredSize() for children that are with AutoSizeMode == FitToAvailableSize
foreach (RadElement child in fitElementsList)
{
//prefSizelist.Add(new PreferredSizeData(child, proposedRect));
prefSizelist.Add(new PreferredSizeData(child, proposedRect.Size, this.forceFitToSizeElements));
}
}
protected bool ExpandElements(List <PreferredSizeData> list, Size availableSize)
{
if (!ShouldExpandElements(list, availableSize))
{
return(false);
}
int sumWidth = GetSumWidth(list);
PreferredSizeData elementToExpand = GetElementToExpand(list, sumWidth, availableSize.Width);
if (elementToExpand == null)
{
return(false);
}
bool expandedSuccessfully = ((ICollapsibleElement)elementToExpand.Element).ExpandElement();
return(expandedSuccessfully);
}
protected PreferredSizeData GetElementToCollapse(List <PreferredSizeData> list)
{
for (int i = 1; ; i++)
{
PreferredSizeData lastElementToCollapse = null;
bool advanceToNextPriority = false;
foreach (PreferredSizeData data in list)
{
ICollapsibleElement collapsibleElement = data.Element as ICollapsibleElement;
if (collapsibleElement == null)
{
continue;
}
if ((collapsibleElement.CollapseStep == i) && (collapsibleElement.CollapseStep < collapsibleElement.CollapseMaxSteps))
{
lastElementToCollapse = data;
}
if (i < collapsibleElement.CollapseMaxSteps)
{
advanceToNextPriority = true;
}
}
if (lastElementToCollapse != null)
{
return(lastElementToCollapse);
}
if (!advanceToNextPriority)
{
break;
}
}
return(null);
}
protected virtual void SetElementBoundsAuto(Rectangle bounds, PreferredSizeData data, int offset)
{
Point location = ItemsOffset;
if (this.Orientation == Orientation.Horizontal)
{
location.X += offset;
}
else
{
location.Y += offset;
}
if (data.Element.AutoSize && data.Element.ElementState == ElementState.Loaded)
{
Size prefSize = this.GetElementPreferredSize(bounds, data);
if (this.IsFitInSize())
{
Size availableSize = Size.Subtract(bounds.Size, this.LayoutEngine.GetBorderSize());
availableSize = Size.Subtract(availableSize, data.Element.Margin.Size);
prefSize = TelerikLayoutEngine.CheckSize(prefSize, availableSize, Size.Empty);
}
Size tempSize = Size.Subtract(this.Size, data.Element.Margin.Size);
if (this.ForceElementsWidth && prefSize.Width < tempSize.Width)
{
prefSize.Width = tempSize.Width;
}
if (this.ForceElementsHeight && prefSize.Height < tempSize.Height)
{
prefSize.Height = tempSize.Height;
}
data.Element.SetBounds(new Rectangle(location, prefSize));
}
else
{
data.Element.Location = location;
}
}
protected virtual Size GetElementPreferredSize(Rectangle bounds, PreferredSizeData data)
{
int width = 0;
int height = 0;
if (this.EqualChildrenWidth)
{
if (this.Orientation == Orientation.Horizontal)
{
width = this.maxIntegralWidth;
}
else
{
width = bounds.Width;
}
}
else
{
width = data.PreferredSize.Width;
}
if (this.EqualChildrenHeight)
{
if (this.Orientation == Orientation.Horizontal)
{
height = bounds.Height;
}
else
{
height = this.maxIntegralHeight;
}
}
else
{
height = data.PreferredSize.Height;
}
return(new Size(width, height));
}
protected bool CollapseElements(List <PreferredSizeData> list, Size availableSize)
{
if (!ShouldCollapseElements(list, availableSize))
{
return(false);
}
bool collapsedSuccessfully = false;
while (!collapsedSuccessfully)
{
PreferredSizeData elementToCollapse = GetElementToCollapse(list);
if (elementToCollapse == null)
{
return(false);
}
collapsedSuccessfully = ((ICollapsibleElement)elementToCollapse.Element).CollapseElement(elementToCollapse.PreferredSize);
elementToCollapse.PreferredSize = elementToCollapse.Element.GetPreferredSize(availableSize);
}
return(collapsedSuccessfully);
}