private static int CompareColumnNames(
AsyncDataGridColumn lhs, AsyncDataGridColumn rhs)
{
var comparisonType = StringComparison.CurrentCultureIgnoreCase;
int cmp = string.Compare(lhs.ColumnName, rhs.ColumnName, comparisonType);
if (cmp != 0)
{
return(cmp);
}
return(lhs.ModelVisibleColumnIndex.CompareTo(rhs.ModelVisibleColumnIndex));
}
private MenuItem CreateContainer(AsyncDataGridColumn column)
{
var item = new MenuItem {
IsCheckable = true,
StaysOpenOnClick = true,
DataContext = column
};
item.SetBinding(MenuItem.IsCheckedProperty, new Binding(nameof(column.IsVisible))
{
Mode = BindingMode.TwoWay
});
item.SetBinding(HeaderedItemsControl.HeaderProperty, new Binding(nameof(column.ColumnName))
{
Mode = BindingMode.OneWay
});
return(item);
}
internal double GetColumnAutoSize(AsyncDataGridColumn column)
{
if (!column.IsVisible && !column.IsDisconnected)
{
throw new InvalidOperationException();
}
double width = 5.0;
var viewModel = cellsPresenter.ViewModel;
if (viewModel == null || viewModel.RowCount <= 0)
{
return(width);
}
double rowHeight = cellsPresenter.RowHeight;
int firstVisibleRow = cellsPresenter.FirstVisibleRowIndex;
int lastVisibleRow = cellsPresenter.LastVisibleRowIndex;
Typeface typeface = cellsPresenter.Typeface;
double fontSize = cellsPresenter.FontSize;
Brush foreground = cellsPresenter.Foreground;
FlowDirection flowDirection = cellsPresenter.FlowDirection;
CultureInfo currentCulture = CultureInfo.CurrentCulture;
double padding = rowHeight / 10;
double totalPadding = 2 * padding;
int viewportSizeHint = lastVisibleRow - firstVisibleRow + 1;
for (int row = firstVisibleRow; row <= lastVisibleRow; ++row)
{
var value = column.GetCellValue(row, viewportSizeHint);
var formatted = new FormattedText(
value.ToString(), currentCulture, flowDirection, typeface,
fontSize, foreground, null, TextFormattingMode.Display);
width = Math.Max(width, formatted.Width + totalPadding + 1);
}
return(width);
}
public AsyncDataGridColumnReorderingEventArgs(
AsyncDataGridColumn column)
: base(column)
{
}
public AsyncDataGridColumnEventArgs(AsyncDataGridColumn column)
{
Column = column;
}