private float MeasureCell(
GridRowElement row,
GridViewColumn column,
GridColumnGroupCellElement cell)
{
cell.Initialize(column, row);
cell.SetContent();
cell.UpdateInfo();
row.SuspendLayout();
row.Children.Add((RadElement)cell);
cell.ResetLayout(true);
float cellDesiredWidth = this.GetCellDesiredWidth((GridCellElement)cell);
row.Children.Remove((RadElement)cell);
row.ResumeLayout(false);
return(cellDesiredWidth);
}
private void BestFitGroupColumn(
GridViewGroupColumn column,
bool bestFitChildColumns,
BestFitColumnMode?mode)
{
GridTableHeaderRowElement headerRowElement = this.GetHeaderRowElement();
IVirtualizedElementProvider <GridViewColumn> elementProvider = this.tableElement.ColumnScroller.ElementProvider;
ColumnGroupRowLayout rowLayout = this.tableElement.ViewElement.RowLayout as ColumnGroupRowLayout;
if (rowLayout == null || headerRowElement == null)
{
return;
}
GridColumnGroupCellElement element = elementProvider.GetElement((GridViewColumn)column, (object)headerRowElement) as GridColumnGroupCellElement;
if (element == null || !element.CanBestFit(column.AutoSizeMode))
{
return;
}
float num = this.MeasureCell((GridRowElement)headerRowElement, (GridViewColumn)column, element);
this.Detach(elementProvider, (GridCellElement)element);
ColumnGroupsCellArrangeInfo columnData = rowLayout.GetColumnData((GridViewColumn)column);
if ((double)columnData.Bounds.Width < (double)num)
{
rowLayout.StartColumnResize((GridViewColumn)column);
rowLayout.ResizeColumn((int)((double)num - (double)columnData.Bounds.Width));
rowLayout.InvalidateLayout();
this.TableElement.ViewElement.InvalidateMeasure(true);
this.TableElement.ViewElement.UpdateLayout();
rowLayout.EndColumnResize();
}
if (!bestFitChildColumns)
{
return;
}
foreach (GridViewColumn dataColumn in this.GetDataColumns(column.Group))
{
this.BestFitColumnCore(dataColumn, mode.HasValue ? mode.Value : column.AutoSizeMode);
}
}
public override void UpdateDropContext(
ISupportDrag draggedContext,
ISupportDrop dropTarget,
Point?location)
{
GridColumnGroupCellElement groupCellElement = dropTarget as GridColumnGroupCellElement;
GridHeaderCellElement headerCellElement = dropTarget as GridHeaderCellElement;
GridViewGroupColumn gridViewGroupColumn = groupCellElement != null ? groupCellElement.ColumnInfo as GridViewGroupColumn : (GridViewGroupColumn)null;
if (headerCellElement == null || !location.HasValue)
{
this.orientation = Orientation.Vertical;
}
else
{
if (headerCellElement.RowElement == null || headerCellElement.RowElement.TableElement == null)
{
return;
}
Rectangle boundingRectangle1 = headerCellElement.ControlBoundingRectangle;
Rectangle boundingRectangle2 = headerCellElement.RowElement.TableElement.ViewElement.ControlBoundingRectangle;
if (boundingRectangle1.Right > boundingRectangle2.Right)
{
boundingRectangle1.Width -= boundingRectangle1.Right - boundingRectangle2.Right;
}
if (boundingRectangle1.X < boundingRectangle2.X)
{
boundingRectangle1.Width -= boundingRectangle2.X - boundingRectangle1.X;
boundingRectangle1.X = boundingRectangle2.X;
}
if ((RadGridViewDragDropService.GetDropPosition(headerCellElement.PointFromScreen(location.Value), headerCellElement.Size) & RadPosition.Bottom) != RadPosition.None && (gridViewGroupColumn != null && gridViewGroupColumn.Group.Rows.Count == 0 && draggedContext.GetDataContext() is GridViewGroupColumn || gridViewGroupColumn != null && gridViewGroupColumn.Group.Groups.Count == 0 && draggedContext.GetDataContext() is GridViewDataColumn || gridViewGroupColumn == null))
{
this.orientation = Orientation.Horizontal;
}
else
{
this.orientation = Orientation.Vertical;
}
}
}
