} // ThumbPreviewMouseLeftButtonDown
// ----------------------------------------------------------------------
private void GridColumnWidthChanged(object sender, EventArgs e)
{
if (!this.loaded)
{
return;
}
GridViewColumn gridViewColumn = sender as GridViewColumn;
// suppress column resizing for proportional and fixed columns
if (ProportionalColumn.IsProportionalColumn(gridViewColumn) || FixedColumn.IsFixedColumn(gridViewColumn))
{
return;
}
// ensure range column within the bounds
if (RangeColumn.IsRangeColumn(gridViewColumn))
{
// special case: auto column width - maybe conflicts with min/max range
if (gridViewColumn.Width.Equals(double.NaN))
{
this.autoSizedColumn = gridViewColumn;
return; // handled by the change header size event
}
// ensure column bounds
if (SetRangeColumnToBounds(gridViewColumn) != 0)
{
return;
}
}
DoResizeColumns();
} // GridColumnWidthChanged
} // ThumbPreviewMouseMove
// ----------------------------------------------------------------------
private void ThumbPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Thumb thumb = sender as Thumb;
GridViewColumn gridViewColumn = FindParentColumn(thumb);
// suppress column resizing for proportional, fixed and range fill columns
if (ProportionalColumn.IsProportionalColumn(gridViewColumn) ||
FixedColumn.IsFixedColumn(gridViewColumn) ||
IsFillColumn(gridViewColumn))
{
e.Handled = true;
return;
}
} // ThumbPreviewMouseLeftButtonDown
} // ListViewUnloaded
// ----------------------------------------------------------------------
private void ThumbPreviewMouseMove(object sender, MouseEventArgs e)
{
Thumb thumb = sender as Thumb;
GridViewColumn gridViewColumn = FindParentColumn(thumb);
if (gridViewColumn == null)
{
return;
}
// suppress column resizing for proportional, fixed and range fill columns
if (ProportionalColumn.IsProportionalColumn(gridViewColumn) ||
FixedColumn.IsFixedColumn(gridViewColumn) ||
IsFillColumn(gridViewColumn))
{
thumb.Cursor = null;
return;
}
// check range column bounds
if (thumb.IsMouseCaptured && RangeColumn.IsRangeColumn(gridViewColumn))
{
double?minWidth = RangeColumn.GetRangeMinWidth(gridViewColumn);
double?maxWidth = RangeColumn.GetRangeMaxWidth(gridViewColumn);
if ((minWidth.HasValue && maxWidth.HasValue) && (minWidth > maxWidth))
{
return; // invalid case
}
if (this.resizeCursor == null)
{
this.resizeCursor = thumb.Cursor; // save the resize cursor
}
if (minWidth.HasValue && gridViewColumn.Width <= minWidth.Value)
{
thumb.Cursor = Cursors.No;
}
else if (maxWidth.HasValue && gridViewColumn.Width >= maxWidth.Value)
{
thumb.Cursor = Cursors.No;
}
else
{
thumb.Cursor = this.resizeCursor; // between valid min/max
}
}
} // ThumbPreviewMouseMove
