Пример #1
0
        } // ListViewUnloaded

        // ----------------------------------------------------------------------
        private void ThumbPreviewMouseMove(object sender, MouseEventArgs e)
        {
            Thumb thumb = sender as Thumb;

            if (thumb == null)
            {
                return;
            }
            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 (resizeCursor == null)
                {
                    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 = resizeCursor; // between valid min/max
                }
            }
        } // ThumbPreviewMouseMove
Пример #2
0
        } // FindColumnHeader

        // ----------------------------------------------------------------------
        private void InitColumns()
        {
            GridView view = listView.View as GridView;

            if (view == null)
            {
                return;
            }

            foreach (GridViewColumn gridViewColumn in view.Columns)
            {
                if (!RangeColumn.IsRangeColumn(gridViewColumn))
                {
                    continue;
                }

                double?minWidth = RangeColumn.GetRangeMinWidth(gridViewColumn);
                double?maxWidth = RangeColumn.GetRangeMaxWidth(gridViewColumn);
                if (!minWidth.HasValue && !maxWidth.HasValue)
                {
                    continue;
                }

                GridViewColumnHeader columnHeader = FindColumnHeader(listView, gridViewColumn);
                if (columnHeader == null)
                {
                    continue;
                }

                double actualWidth = columnHeader.ActualWidth;
                if (minWidth.HasValue)
                {
                    columnHeader.MinWidth = minWidth.Value;
                    if (!double.IsInfinity(actualWidth) && actualWidth < columnHeader.MinWidth)
                    {
                        gridViewColumn.Width = columnHeader.MinWidth;
                    }
                }
                if (maxWidth.HasValue)
                {
                    columnHeader.MaxWidth = maxWidth.Value;
                    if (!double.IsInfinity(actualWidth) && actualWidth > columnHeader.MaxWidth)
                    {
                        gridViewColumn.Width = columnHeader.MaxWidth;
                    }
                }
            }
        } // InitColumns