private int GetDragColumnInfo(Point ptMouse, HitInfoType ht, out Rectangle colRect)
{
colRect = Rectangle.Empty;
if (ht == HitInfoType.CustomizationForm && SourceInfo.Column.OptionsColumn.AllowMoveToCustomizationForm)
{
return(-101);
}
Rectangle visibleColPanelBounds = new Rectangle(ViewInfo.ViewRects.ColumnPanel.Left + ViewInfo.ViewRects.IndicatorWidth, ViewInfo.ViewRects.ColumnPanel.Top, ViewInfo.ViewRects.ColumnPanel.Width - ViewInfo.ViewRects.IndicatorWidth, ViewInfo.ViewRects.ColumnPanel.Height + IncreasedColumnHeight);
if (!visibleColPanelBounds.Contains(ptMouse))
{
if (ptMouse.X < (ViewInfo.ViewRects.Client.Left + ViewInfo.ViewRects.IndicatorWidth) || ptMouse.X > ViewInfo.ViewRects.Client.Right - 2)
{
return(-1);
}
return(-100);
}
ColumnInfo ci = ViewInfo.GetHitTest(ptMouse).ColumnInfo;
if (ht == HitInfoType.FixedRightDiv)
{
ci = ViewInfo.ColumnsInfo[ViewInfo.FixedRightColumn];
}
if (ht == HitInfoType.FixedLeftDiv)
{
ci = ViewInfo.ColumnsInfo[ViewInfo.FindFixedLeftColumn()];
}
if (ci == null)
{
return(-1);
}
if (((ci.Type != ColumnInfo.ColumnInfoType.Column) && !(ci is MyTreeListBandInfo)) || ci.Type == ColumnInfo.ColumnInfoType.ColumnButton)
{
if (ci.Type == ColumnInfo.ColumnInfoType.ColumnBlank && TreeList.VisibleColumns.Count == 0)
{
colRect = TreeList.RectangleToScreen(ci.Bounds);
return(0);
}
return(-1);
}
if (Data.DownHitTest.MouseDest == ci.Bounds)
{
return(-1);
}
Rectangle rect = Rectangle.Intersect(ci.Bounds, visibleColPanelBounds);
int showIndicatorIndexOffset = (TreeList.OptionsView.ShowIndicator ? 1 : 0);
int colIndex = ViewInfo.ColumnsInfo.Columns.IndexOf(ci) - showIndicatorIndexOffset;
bool nextAfterPressed = (ci.Column.VisibleIndex == SourceInfo.Column.VisibleIndex + 1);
bool lastVisbleLeft = ci.Column == ViewInfo.FixedLeftColumn;
bool lastVisibleRight = IsBeforeFixedRight(ci.Column);
bool lastVisible = (rect.Right == visibleColPanelBounds.Right || ci.Column.VisibleIndex == TreeList.VisibleColumns.Count - 1 || lastVisbleLeft || lastVisibleRight);
if (SourceInfo.Column.VisibleIndex == -1)
{
nextAfterPressed = false;
}
if (nextAfterPressed || lastVisible)
{
if (rect.Width < 6)
{
return(-1);
}
Rectangle nextR = rect, nextR2 = rect;
nextR2.X = nextR.Right - 1;
nextR2.Width = 1;
nextR.X = nextR.Right - nextR.Width / 2;
nextR.Width /= 2;
if (lastVisible)
{
if (NextRectContains(nextR, ptMouse))
{
rect = UseArrows ? nextR2 : nextR;
if (colIndex >= 0)
{
ci = ViewInfo.ColumnsInfo.Columns[colIndex++] as ColumnInfo;
}
}
else
{
if (nextAfterPressed)
{
return(-1);
}
}
}
else
{
if (!NextRectContains(nextR, ptMouse))
{
return(-1);
}
colIndex++;
ci = ViewInfo.ColumnsInfo.Columns[colIndex + showIndicatorIndexOffset] as ColumnInfo;
if (colIndex - 1 < ViewInfo.ColumnsInfo.Columns.Count - 1)
{
rect = Rectangle.Intersect(ci.Bounds, visibleColPanelBounds);
}
else
{
rect = UseArrows ? nextR2 : nextR;
}
}
}
colRect = TreeList.RectangleToScreen(rect);
int columnsCount = TreeList.VisibleColumns.Count;
if (ci.Type == ColumnInfo.ColumnInfoType.ColumnBlank || colIndex > columnsCount - 1)
{
return(columnsCount);
}
columnsCount = CalcFixedColumnsCount(FixedStyle.Left);
if (lastVisbleLeft && colIndex > columnsCount - 1)
{
return(columnsCount);
}
columnsCount = TreeList.VisibleColumns.Count - CalcFixedColumnsCount(FixedStyle.Right);
if (lastVisibleRight && colIndex > columnsCount - 1)
{
return(columnsCount);
}
if (ci.Column == null)
{
return(-1);
}
return(ci.Column.VisibleIndex);
}