/// <summary>
/// Execute the placement
/// </summary>
/// <param name="tablecontrol"></param>
/// <param name="columns"></param>
/// <param name="dx"></param>
/// <param name="newRect"></param>
/// <param name="considerEditors"></param>
/// <param name="maxColumnWithEditor"></param>
/// <param name="tablePlacementStrategy"></param>
public void ExecutePlacement(TableControl tablecontrol, List <ILogicalColumn> columns, int dx, Rectangle newRect, bool considerEditors, int maxColumnWithEditor, ITablePlacementStrategy tablePlacementStrategy)
{
int colNum = 0;
// compute number of columns for placement
for (int i = 0; i < columns.Count; i++)
{
ILogicalColumn column = columns[i];
if (dx <= 0 && tablePlacementStrategy.GetColumnWidth(column) == 0)
{
continue;
}
if (PlacementAllowed(column, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns)))
{
colNum++;
}
}
// Handle Column Placement
if (colNum != 0)
{
int colDx = dx / colNum; // dx to move a column
int rem = Math.Abs(dx) - Math.Abs(colDx) * colNum;
int addOn = 0;
bool secondRound = false;
for (int i = columns.Count - 1; i >= 0; i--)
{
ILogicalColumn column = columns[i];
int colWidth = tablePlacementStrategy.GetColumnWidth(column);
if (!PlacementAllowed(column, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns)))
{
continue;
}
if (colDx < 0 && colWidth == 0)
{
continue;
}
if (colDx < 0 && (colWidth < Math.Abs(colDx) + Math.Abs(addOn)) && colWidth > 0)
{
// the column width is less then the amount need to shrink it, pass the remainder of ColMoveDX to
// the next col's.
addOn += colWidth + colDx; // save the remainder
column.setWidthOnPlacement(0, false);
secondRound = true;
}
else
{
column.setWidthOnPlacement(Math.Max(0, colWidth + colDx + addOn), false);
secondRound = false;
addOn = 0;
}
}
if (secondRound)
{
for (int i = columns.Count - 1; i >= 0; i--)
{
ILogicalColumn column = columns[i];
int colWidth = column.getWidth();
if (addOn < 0 && PlacementAllowed(column, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns)) && colWidth > 0)
{
if (colWidth < Math.Abs(addOn))
{
addOn += colWidth;
column.setWidthOnPlacement(0, false);
}
else
{
column.setWidthOnPlacement(colWidth + addOn, false);
addOn = 0;
}
}
}
}
// resize columns the remainder of dx
int count = 0;
while (rem > 0 && count < columns.Count)
{
ILogicalColumn column = columns[_placementIdx];
if (PlacementAllowed(column, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns)))
{
int colWidth = column.getWidth();
if (dx > 0 || (dx < 0 && colWidth > 0))
{
long ResizeDx = rem;
if (dx < 0)
{
// can not set widht less then 0
ResizeDx = Math.Min(ResizeDx, colWidth);
}
colWidth = (int)(colWidth + (dx > 0 ? ResizeDx : -ResizeDx));
column.setWidthOnPlacement(colWidth, false);
rem = (int)(rem - ResizeDx);
}
}
if (--_placementIdx < 0)
{
_placementIdx = columns.Count - 1;
}
count++;
}
//QCR #913300, column.setWidthOnPlacement causes repaints,
//this is will improve performance
tablecontrol.AllowPaint = false;
if (considerEditors)
{
if (tablecontrol.RightToLeft == System.Windows.Forms.RightToLeft.Yes)
{
for (int i = columns.Count - 1; i >= 0; i--)
{
ILogicalColumn column = columns[i];
HandleEditors(tablecontrol, column, i <= maxColumnWithEditor, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns));
}
}
else
{
for (int i = 0; i < columns.Count; i++)
{
ILogicalColumn column = columns[i];
HandleEditors(tablecontrol, column, i <= maxColumnWithEditor, tablePlacementStrategy.ShouldApplyPlacementToHiddenColumns(ShouldApplyPlacementToHiddenColumns));
}
}
}
tablecontrol.MoveColumns(0);
tablecontrol.AllowPaint = true;
tablecontrol.Invalidate();
}
}