private void _handler_DragStart(object sender, MouseEventArgs e)
{
switch (_direction)
{
case SplitterDragHandlerDirection.EastWest:
_setDragCursor = new SetCursor(Cursors.VSplit);
_variantDimension = _dragHandler.Control.PointToClient(Cursor.Position).X;
_invariantStartDimension = _dragHandler.Control.ClientRectangle.Top;
_invariantEndDimension = _dragHandler.Control.ClientRectangle.Bottom;
break;
case SplitterDragHandlerDirection.NorthSouth:
_setDragCursor = new SetCursor(Cursors.HSplit);
_variantDimension = _dragHandler.Control.PointToClient(Cursor.Position).Y;
_invariantStartDimension = _dragHandler.Control.ClientRectangle.Left;
_invariantEndDimension = _dragHandler.Control.ClientRectangle.Right;
break;
default:
break;
}
Rectangle bitmapRectangle = GetDragRectangle();
_bitmap = new Bitmap(bitmapRectangle.Width, bitmapRectangle.Height);
_offset = 0;
using (DesktopGraphics graphics = new DesktopGraphics())
{
SaveBitmap(graphics);
}
}
public Rectangle End()
{
Rectangle result;
using (DesktopGraphics graphics = new DesktopGraphics())
{
result = _drag.End(graphics);
}
_drag.Dispose();
_drag = null;
_setCursor.Dispose();
_setCursor = null;
return(result);
}
public void Start(Point startPoint)
{
if (_enabled)
{
_drag = new RectangleDrag();
_startPoint = startPoint;
if (_dragCursor != null)
{
if (_setCursor != null)
{
_setCursor.Dispose();
}
_setCursor = new SetCursor(_dragCursor);
}
using (DesktopGraphics graphics = new DesktopGraphics())
{
_drag.Start(_control.Parent.RectangleToScreen(_control.Bounds), graphics);
}
}
}
private void _handler_DragEnd(object sender, MouseEventArgs e)
{
using (DesktopGraphics graphics = new DesktopGraphics())
{
RestoreBitmap(graphics);
_bitmap.Dispose();
_bitmap = null;
}
_setDragCursor.Dispose();
_setDragCursor = null;
switch (_direction)
{
case SplitterDragHandlerDirection.NorthSouth:
OnEndSplitterDrag(_dragHandler.Offset.Y);
break;
case SplitterDragHandlerDirection.EastWest:
OnEndSplitterDrag(_dragHandler.Offset.X);
break;
}
}
private void SetCursor(Cursor cursor)
{
if (cursor == null)
{
if (_setCursor != null)
{
_setCursor.Dispose();
_setCursor = null;
}
}
else
{
if (_setCursor != null && cursor != _setCursor.Cursor)
{
_setCursor.Dispose();
_setCursor = null;
}
if (_setCursor == null)
{
_setCursor = new SetCursor(Control, cursor);
}
}
}
