nuttx/graphics/nxterm/nxterm_resize.c
2021-03-09 23:18:28 +08:00

88 lines
2.6 KiB
C

/****************************************************************************
* graphics/nxterm/nxterm_resize.c
*
* 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 <stdint.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nx.h>
#include <nuttx/nx/nxglib.h>
#include "nxterm.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxterm_resize
*
* Description:
* This function handles the IOCTL resize command. It indicates that the
* size of the NxTerm window has changed and needs to be updated.
*
* Input Parameters:
* handle - A handle previously returned by nx_register, nxtk_register, or
* nxtool_register.
* size - The new window size
*
* Returned Value:
* None
*
****************************************************************************/
int nxterm_resize(NXTERM handle, FAR const struct nxgl_size_s *size)
{
FAR struct nxterm_state_s *priv;
int ret;
DEBUGASSERT(handle != NULL && size != NULL);
ginfo("size={%d,%d)\n", size->w, size->h);
/* Recover our private state structure */
priv = (FAR struct nxterm_state_s *)handle;
/* Get exclusive access to the state structure */
ret = nxterm_semwait(priv);
if (ret < 0)
{
return ret;
}
/* Set the new window size.
* REVISIT: Should other things be reset as well?
*/
priv->wndo.wsize.w = size->w;
priv->wndo.wsize.h = size->h;
nxterm_sempost(priv);
return true;
}