249 lines
8.1 KiB
C
249 lines
8.1 KiB
C
/****************************************************************************
|
|
* graphics/nxmu/nx_eventhandler.c
|
|
*
|
|
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* 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 <sys/types.h>
|
|
#include <stdlib.h>
|
|
#include <mqueue.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/nx.h>
|
|
#include "nxfe.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-Processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nx_connected
|
|
*
|
|
* Description:
|
|
* The server has completed the connection and is ready.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static inline void nx_connected(FAR struct nxfe_conn_s *conn)
|
|
{
|
|
DEBUGASSERT(conn->state == NX_CLISTATE_NOTCONNECTED);
|
|
conn->state = NX_CLISTATE_CONNECTED;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nx_disconnected
|
|
****************************************************************************/
|
|
|
|
static inline void nx_disconnected(FAR struct nxfe_conn_s *conn)
|
|
{
|
|
/* Close the server and client MQs */
|
|
|
|
(void)mq_close(conn->cwrmq);
|
|
(void)mq_close(conn->crdmq);
|
|
|
|
/* And free the client structure */
|
|
|
|
free(conn);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nx_eventhandler
|
|
*
|
|
* Description:
|
|
* The client code must call this function periodically to process
|
|
* incoming messages from the server. If CONFIG_NX_BLOCKING is defined,
|
|
* then this function not return until a server message is received.
|
|
*
|
|
* When CONFIG_NX_BLOCKING is not defined, the client must exercise
|
|
* caution in the looping to assure that it does not eat up all of
|
|
* the CPU bandwidth calling nx_eventhandler repeatedly. nx_eventnotify
|
|
* may be called to get a signal event whenever a new incoming server
|
|
* event is avaiable.
|
|
*
|
|
* Input Parameters:
|
|
* handle - the handle returned by nx_connect
|
|
*
|
|
* Return:
|
|
* OK: No errors occurred. If CONFIG_NX_BLOCKING is defined, then
|
|
* one or more server message was processed.
|
|
* ERROR: An error occurred and errno has been set appropriately. Of
|
|
* particular interest, it will return errno == EHOSTDOWN when the
|
|
* server is disconnected. After that event, the handle can no
|
|
* longer be used.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nx_eventhandler(NXHANDLE handle)
|
|
{
|
|
FAR struct nxfe_conn_s *conn = (FAR struct nxfe_conn_s *)handle;
|
|
struct nxsvrmsg_s *msg;
|
|
struct nxbe_window_s *wnd;
|
|
ubyte buffer[NX_MXCLIMSGLEN];
|
|
int nbytes;
|
|
|
|
/* Get the next message from our incoming message queue */
|
|
|
|
do
|
|
{
|
|
nbytes = mq_receive(conn->crdmq, buffer, NX_MXCLIMSGLEN, 0);
|
|
if (nbytes < 0)
|
|
{
|
|
/* EINTR is not an error. The wait was interrupted by a signal and
|
|
* we just need to try reading again.
|
|
*/
|
|
|
|
if (errno != EINTR)
|
|
{
|
|
if (errno == EAGAIN)
|
|
{
|
|
/* EAGAIN is not an error. It occurs because the MQ is opened with
|
|
* O_NONBLOCK and there is no message available now.
|
|
*/
|
|
|
|
return OK;
|
|
}
|
|
else
|
|
{
|
|
gdbg("mq_receive failed: %d\n", errno);
|
|
return ERROR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
while (nbytes < 0);
|
|
|
|
DEBUGASSERT(nbytes >= sizeof(struct nxclimsg_s));
|
|
|
|
/* Dispatch the message appropriately */
|
|
|
|
msg = (struct nxsvrmsg_s *)buffer;
|
|
gvdbg("Received msgid=%d\n", msg->msgid);
|
|
switch (msg->msgid)
|
|
{
|
|
case NX_CLIMSG_CONNECTED:
|
|
nx_connected(conn);
|
|
break;
|
|
|
|
case NX_CLIMSG_DISCONNECTED:
|
|
nx_disconnected(conn);
|
|
errno = EHOSTDOWN;
|
|
return ERROR;
|
|
|
|
case NX_CLIMSG_REDRAW:
|
|
{
|
|
FAR struct nxclimsg_redraw_s *redraw = (FAR struct nxclimsg_redraw_s *)buffer;
|
|
wnd = redraw->wnd;
|
|
DEBUGASSERT(wnd);
|
|
if (wnd->cb->redraw)
|
|
{
|
|
wnd->cb->redraw((NXWINDOW)wnd, &redraw->rect, redraw->more, wnd->arg);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NX_CLIMSG_NEWPOSITION:
|
|
{
|
|
FAR struct nxclimsg_newposition_s *postn = (FAR struct nxclimsg_newposition_s *)buffer;
|
|
wnd = postn->wnd;
|
|
DEBUGASSERT(wnd);
|
|
if (wnd->cb->position)
|
|
{
|
|
wnd->cb->position((NXWINDOW)wnd, &postn->size, &postn->pos, &postn->bounds, wnd->arg);
|
|
}
|
|
}
|
|
break;
|
|
|
|
#ifdef CONFIG_NX_MOUSE
|
|
case NX_CLIMSG_MOUSEIN:
|
|
{
|
|
FAR struct nxclimsg_mousein_s *mouse = (FAR struct nxclimsg_mousein_s *)buffer;
|
|
wnd = mouse->wnd;
|
|
DEBUGASSERT(wnd);
|
|
if (wnd->cb->mousein)
|
|
{
|
|
wnd->cb->mousein((NXWINDOW)wnd, &mouse->pos, mouse->buttons, wnd->arg);
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_NX_KBD
|
|
case NX_CLIMSG_KBDIN:
|
|
{
|
|
FAR struct nxclimsg_kbdin_s *kbd = (FAR struct nxclimsg_kbdin_s *)buffer;
|
|
wnd = kbd->wnd;
|
|
DEBUGASSERT(wnd);
|
|
if (wnd->cb->kbdin)
|
|
{
|
|
wnd->cb->kbdin((NXWINDOW)wnd, kbd->nch, kbd->ch, wnd->arg);
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
gdbg("Unrecognized message opcode: %d\n", ((FAR struct nxsvrmsg_s *)buffer)->msgid);
|
|
break;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|