/****************************************************************************
* graphics/nxbe/nxbe_lower.c
*
* Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stddef.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_lower
*
* Description:
* Lower the specified window to the bottom of the display.
*
****************************************************************************/
void nxbe_lower(FAR struct nxbe_window_s *wnd)
{
FAR struct nxbe_state_s *be = wnd->be;
FAR struct nxbe_window_s *below;
/* If the window is already at the bottom, then there is nothing to do */
if (!wnd->below || wnd->below == &be->bkgd)
{
return;
}
/* Remove the window from its current position in the list */
wnd->below->above = wnd->above;
/* Was it at the top of the display? */
if (wnd->above)
{
/* No... it was in the middle somewhere */
wnd->above->below = wnd->below;
}
else
{
/* Yes.. set the new top window */
be->topwnd = wnd->below;
be->topwnd->above = NULL;
}
/* Remember the window that was just below us */
below = wnd->below;
/* Then put the lowered window at the bottom (just above the background window) */
wnd->below = &be->bkgd;
wnd->above = be->bkgd.above;
be->bkgd.above = wnd;
/* Redraw the windows that were below us (but now are above) */
nxbe_redrawbelow(be, below, &wnd->bounds);
}