Exemplo n.º 1
0
        /// <summary>
        /// Delegate called when a mouse is mouving on a thumb.
        /// </summary>
        /// <param name="pSender">The event sender.</param>
        /// <param name="pEventArgs">The event arguments.</param>
        private void OnThumbPreviewMouseMove(object pSender, MouseEventArgs pEventArgs)
        {
            Thumb lThumb = pSender as Thumb;

            if (lThumb == null)
            {
                return;
            }

            GridViewColumn lColumn = this.FindParentColumn(lThumb);

            if (lColumn == null)
            {
                return;
            }

            // Suppress column resizing for fixed and range fill columns.
            if (FixedColumn.IsFixedColumn(lColumn) || this.IsFillColumn(lColumn))
            {
                // Cursor is hidden.
                lThumb.Cursor = null;
                return;
            }

            // Check range column bounds.
            if (lThumb.IsMouseCaptured && RangeColumn.IsRangeColumn(lColumn))
            {
                double?lMinWidth = RangeColumn.GetRangeMinWidth(lColumn);
                double?lMaxWidth = RangeColumn.GetRangeMaxWidth(lColumn);

                if ((lMinWidth.HasValue && lMaxWidth.HasValue) && (lMinWidth > lMaxWidth))
                {
                    // Invalid case.
                    return;
                }

                if (this.mBackCursor == null)
                {
                    // First time = save the resize cursor.
                    this.mBackCursor = lThumb.Cursor;
                }

                // Updating the cursor.
                if (lMinWidth.HasValue && lColumn.Width <= lMinWidth.Value)
                {
                    lThumb.Cursor = Cursors.No;
                }
                else if (lMaxWidth.HasValue && lColumn.Width >= lMaxWidth.Value)
                {
                    lThumb.Cursor = Cursors.No;
                }
                else
                {
                    lThumb.Cursor = this.mBackCursor;
                }
            }
        }
Exemplo n.º 2
0
        /// <summary>
        /// Initialize the columns by applying there properties.
        /// </summary>
        private void InitColumns()
        {
            if (this.mListView.View == null)
            {
                return;
            }

            foreach (GridViewColumn lColumn in this.mListView.View.Columns)
            {
                if (RangeColumn.IsRangeColumn(lColumn) == false)
                {
                    continue;
                }

                double?lMinWidth = RangeColumn.GetRangeMinWidth(lColumn);
                double?lMaxWidth = RangeColumn.GetRangeMaxWidth(lColumn);
                if (lMinWidth.HasValue == false && lMaxWidth.HasValue == false)
                {
                    continue;
                }

                GridViewColumnHeader lColumnHeader = this.FindColumnHeader(this.mListView, lColumn);
                if (lColumnHeader == null)
                {
                    continue;
                }

                double lActualWidth = lColumnHeader.ActualWidth;
                if (lMinWidth.HasValue)
                {
                    lColumnHeader.MinWidth = lMinWidth.Value;
                    if (!double.IsInfinity(lActualWidth) && lActualWidth < lColumnHeader.MinWidth)
                    {
                        lColumn.Width = lColumnHeader.MinWidth;
                    }
                }

                if (lMaxWidth.HasValue)
                {
                    lColumnHeader.MaxWidth = lMaxWidth.Value;
                    if (double.IsInfinity(lActualWidth) == false && lActualWidth > lColumnHeader.MaxWidth)
                    {
                        lColumn.Width = lColumnHeader.MaxWidth;
                    }
                }
            }
        }
Exemplo n.º 3
0
        /// <summary>
        /// Delegate called when a column width change.
        /// </summary>
        /// <param name="pSender">The event sender.</param>
        /// <param name="pEventArgs">The event arguments.</param>
        private void OnGridColumnWidthChanged(object pSender, EventArgs pEventArgs)
        {
            if (this.mLoaded == false)
            {
                return;
            }

            GridViewColumn lColumn = pSender as GridViewColumn;

            if (lColumn == null)
            {
                return;
            }

            // Suppress column resizing for fixed columns.
            if (FixedColumn.IsFixedColumn(lColumn))
            {
                return;
            }

            // Ensure range column within the bounds.
            if (RangeColumn.IsRangeColumn(lColumn))
            {
                // Special case: auto column width - maybe conflicts with min/max range.
                if (lColumn != null && lColumn.Width.Equals(double.NaN))
                {
                    // Resize is handled by the change header size event.
                    this.mAutoSizedColumn = lColumn;
                    return;
                }

                // ensure column bounds
                if (Math.Abs(this.SetRangeColumnToBounds(lColumn) - 0) > ZERO_WIDTH_RANGE)
                {
                    return;
                }
            }

            // Force resize.
            this.DoResizeColumns(this.mListView.View.Columns.IndexOf(lColumn));
        }