} // InitColumns
// ----------------------------------------------------------------------
protected virtual void ResizeColumns()
{
if (listView == null || listView.Columns.Count == 0)
{
return;
}
// listview width
double actualWidth = double.PositiveInfinity;
if (this.scrollViewer != null)
{
actualWidth = this.scrollViewer.ViewportWidth;
}
if (double.IsInfinity(actualWidth))
{
actualWidth = this.listView.ActualWidth;
}
if (double.IsInfinity(actualWidth) || actualWidth <= 0)
{
return;
}
double resizeableRegionCount = 0;
double otherColumnsWidth = 0;
// determine column sizes
foreach (GridViewColumn gridViewColumn in listView.Columns)
{
if (ProportionalColumn.IsProportionalColumn(gridViewColumn))
{
resizeableRegionCount += ProportionalColumn.GetProportionalWidth(gridViewColumn).Value;
}
else
{
otherColumnsWidth += gridViewColumn.ActualWidth;
}
}
if (resizeableRegionCount <= 0)
{
// no proportional columns present: commit the regulation to the scroll viewer
this.scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
// search the first fill column
GridViewColumn fillColumn = null;
for (int i = 0; i < listView.Columns.Count; i++)
{
GridViewColumn gridViewColumn = listView.Columns[i];
if (IsFillColumn(gridViewColumn))
{
fillColumn = gridViewColumn;
break;
}
}
if (fillColumn != null)
{
double otherColumnsWithoutFillWidth = otherColumnsWidth - fillColumn.ActualWidth;
double fillWidth = actualWidth - otherColumnsWithoutFillWidth;
if (fillWidth > 0)
{
double?minWidth = RangeColumn.GetRangeMinWidth(fillColumn);
double?maxWidth = RangeColumn.GetRangeMaxWidth(fillColumn);
bool setWidth = true;
if (minWidth.HasValue && fillWidth < minWidth.Value)
{
setWidth = false;
}
if (maxWidth.HasValue && fillWidth > maxWidth.Value)
{
setWidth = false;
}
if (setWidth)
{
this.scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Hidden;
fillColumn.Width = fillWidth;
}
}
}
return;
}
double resizeableColumnsWidth = actualWidth - otherColumnsWidth;
if (resizeableColumnsWidth <= 0)
{
return; // missing space
}
// resize columns
double resizeableRegionWidth = resizeableColumnsWidth / resizeableRegionCount;
foreach (GridViewColumn gridViewColumn in listView.Columns)
{
if (ProportionalColumn.IsProportionalColumn(gridViewColumn))
{
gridViewColumn.Width = ProportionalColumn.GetProportionalWidth(gridViewColumn).Value *resizeableRegionWidth;
}
}
} // ResizeColumns
