nuttx/libs/libnx/nxmu/nx_redrawreq.c

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/****************************************************************************
* libs/libnx/nxmu/nx_redrawreq.c
*
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* Copyright (C) 2013 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 <errno.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxbe.h>
#include <nuttx/nx/nxmu.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
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* Name: nx_redrawreq
*
* Description:
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* This will cause a NX re-draw callback to the client that owns the
* window. This is not normally called from user code, but may be
* used within middle-ware layers when redrawing is needed.
*
* Input Parameters:
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* hwnd - Window handle
* rect - The rectangle that needs to be re-drawn (in window relative
* coordinates)
*
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* Returned Value:
* None
*
****************************************************************************/
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void nx_redrawreq(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect)
{
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FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_redrawreq_s outmsg;
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int ret;
DEBUGASSERT(wnd && rect);
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/* Inform the server of the changed position */
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outmsg.msgid = NX_SVRMSG_REDRAWREQ;
outmsg.wnd = wnd;
nxgl_rectcopy(&outmsg.rect, rect);
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ret = nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_redrawreq_s));
if (ret < 0)
{
gerr("ERROR: nxmu_sendwindow failed: %d\n", errno);
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}
}