nuttx/graphics/nxbe/nxbe_lower.c
Alin Jerpelea 0a17b87286 graphics: migrate to SPDX identifier
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2024-09-10 22:54:31 +08:00

100 lines
3.0 KiB
C

/****************************************************************************
* graphics/nxbe/nxbe_lower.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stddef.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* 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.
* Refuse to lower the background window; Refuse to lower a modal window.
* It is impossible to lower a hidden window because it does not exist
* in the hierarchy.
*/
if (wnd->below == NULL || wnd->below == &be->bkgd ||
NXBE_ISMODAL(wnd) || NXBE_ISHIDDEN(wnd))
{
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);
}