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Add APIs to get access to background

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1343 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2008-11-29 14:59:02 +00:00
parent 586f69da53
commit d3038a7a98
14 changed files with 898 additions and 12 deletions
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8
graphics/nxmu/Make.defs
View File

@ -38,7 +38,9 @@ NXAPI_CSRCS = nx_bitmap.c nx_closewindow.c nx_connect.c nx_disconnect.c \
nx_eventhandler.c nx_fill.c nx_filltrapezoid.c \
nx_getposition.c nx_kbdchin.c nx_kbdin.c nx_lower.c \
nx_mousein.c nx_move.c nx_openwindow.c nx_raise.c \
nx_setsize.c nx_setbgcolor.c nx_setposition.c
NXMU_CSRCS = nxmu_server.c nxmu_openwindow.c nxmu_reportposition.c nxmu_kbdin.c \
nxmu_mouse.c nxmu_redrawreq.c nxmu_semtake.c
nx_releasebkgd.c nx_requestbkgd.c nx_setsize.c \
nx_setbgcolor.c nx_setposition.c
NXMU_CSRCS = nxmu_kbdin.c nxmu_mouse.c nxmu_openwindow.c nxmu_redrawreq.c \
nxmu_releasebkgd.c nxmu_requestbkgd.c nxmu_reportposition.c \
nxmu_semtake.c nxmu_server.c
NX_CSRCS = $(NXAPI_CSRCS) $(NXMU_CSRCS)

113
graphics/nxmu/nx_releasebkgd.c Normal file
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@ -0,0 +1,113 @@
/****************************************************************************
* graphics/nxsu/nx_releasebkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_releasebkgd
*
* Description:
* Release the background window previously acquired using nx_openbgwindow
* and return control of the background to NX.
*
* Input Parameters:
* hwnd - The handle returned (indirectly) by nx_requestbkgd
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
int nx_releasebkgd(NXWINDOW hwnd)
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_releasebkgd_s outmsg;
int ret;
#ifdef CONFIG_DEBUG
if (!wnd)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Request access to the background window from the server */
outmsg.msgid = NX_SVRMSG_RELEASEBKGD;
ret = mq_send(wnd->conn->cwrmq, &outmsg, sizeof(struct nxsvrmsg_releasebkgd_s), NX_SVRMSG_PRIO);
if (ret < 0)
{
gdbg("mq_send failed: %d\n", errno);
return ERROR;
}
return OK;
}

141
graphics/nxmu/nx_requestbkgd.c Normal file
View File

@ -0,0 +1,141 @@
/****************************************************************************
* graphics/nxmu/nx_requestbkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_requestbkgd
*
* Description:
* NX normally controls a separate window called the background window.
* It repaints the window as necessary using only a solid color fill. The
* background window always represents the entire screen and is always
* below other windows. It is useful for an application to control the
* background window in the following conditions:
*
* - If you want to implement a windowless solution. The single screen
* can be used to creat a truly simple graphic environment. In this
* case, you should probably also de-select CONFIG_NX_MULTIUSER as well.
* - When you want more on the background than a solid color. For
* example, if you want an image in the background, or animations in the
* background, or live video, etc.
*
* This API only requests the handle of the background window. That
* handle will be returned asynchronously in a subsequent position and
* redraw callbacks.
*
*
* Cautions:
* - The following should never be called using the background window.
* They are guaranteed to cause severe crashes:
*
* nx_setposition, nx_setsize, nx_raise, nx_lower.
*
* - Neither nx_opengbwindow or nx_closebgwindow should be called more than
* once. Multiple instances of the background window are not supported.
*
* Input Parameters:
* handle - The handle returned by nx_connect
* cb - Callbacks to use for processing background window events
*
* Return:
* OK: Success; ERROR of failure with errno set appropriately.
*
****************************************************************************/
int nx_requestbkgd(NXHANDLE handle, FAR const struct nx_callback_s *cb)
{
FAR struct nxfe_conn_s *conn = (FAR struct nxfe_conn_s *)handle;
struct nxsvrmsg_requestbkgd_s outmsg;
int ret;
#ifdef CONFIG_DEBUG
if (!conn || !cb)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Request access to the background window from the server */
outmsg.msgid = NX_SVRMSG_REQUESTBKGD;
outmsg.conn = conn;
outmsg.cb = cb;
ret = mq_send(conn->cwrmq, &outmsg, sizeof(struct nxsvrmsg_requestbkgd_s), NX_SVRMSG_PRIO);
if (ret < 0)
{
gdbg("mq_send failed: %d\n", errno);
return ERROR;
}
return OK;
}

56
graphics/nxmu/nxfe.h
View File

@ -154,6 +154,8 @@ enum nxmsg_e
NX_SVRMSG_DISCONNECT, /* Tear down connection with terminating client */
NX_SVRMSG_OPENWINDOW, /* Create a new window */
NX_SVRMSG_CLOSEWINDOW, /* Close an existing window */
NX_SVRMSG_REQUESTBKGD, /* Open the background window */
NX_SVRMSG_RELEASEBKGD, /* Release the background window */
NX_SVRMSG_SETPOSITION, /* Window position has changed */
NX_SVRMSG_SETSIZE, /* Window size has changed */
NX_SVRMSG_GETPOSITION, /* Get the current window position and size */
@ -265,6 +267,22 @@ struct nxsvrmsg_closewindow_s
FAR struct nxbe_window_s *wnd; /* The window to be closed */
};
/* This message requests the server to create a new window */
struct nxsvrmsg_requestbkgd_s
{
uint32 msgid; /* NX_SVRMSG_REQUESTBKGD */
FAR struct nxfe_conn_s *conn; /* The specific connection sending the message */
FAR const struct nx_callback_s *cb; /* Event handling callbacks */
};
/* This message informs the server that client wishes to close a window */
struct nxsvrmsg_releasebkgd_s
{
uint32 msgid; /* NX_SVRMSG_RELEASEBKGD */
};
/* This message informs the server that the size or position of the window has changed */
struct nxsvrmsg_setposition_s
@ -438,6 +456,44 @@ EXTERN void nxmu_openwindow(FAR struct nxfe_conn_s *conn,
FAR struct nxbe_window_s *wnd,
FAR const struct nx_callback_s *cb);
/****************************************************************************
* Name: nxmu_requestbkgd
*
* Description:
* Perform the server-side operation for the nx_requestbkgd operation:
* Give the client control of the background window connection and receipt
* of all background window callbacks.
*
* conn - The client containing connection information [IN]
* be - The server state structure [IN]
* cb - Callbacks used to process window events
*
* Return:
* None
*
****************************************************************************/
EXTERN void nxmu_requestbkgd(FAR struct nxfe_conn_s *conn,
FAR struct nxbe_state_s *be,
FAR const struct nx_callback_s *cb);
/****************************************************************************
* Name: nxmu_releasebkgd
*
* Description:
* Release the background window previously acquired using nxmu_openbgwindow
* and return control of the background to NX.
*
* Input Parameters:
* fe - The front-end state structure
*
* Return:
* None
*
****************************************************************************/
EXTERN void nxmu_releasebkgd(FAR struct nxfe_state_s *fe);
/****************************************************************************
* Name: nxfe_reportposition
*

6
graphics/nxmu/nxmu_openwindow.c
View File

@ -108,7 +108,11 @@ void nxmu_openwindow(FAR struct nxfe_conn_s *conn,
be->topwnd->above = wnd;
be->topwnd = wnd;
/* Provide the initial mouse settings */
/* Report the initial size/position of the window to the client */
nxfe_reportposition((NXWINDOW)wnd);
/* Provide the initial mouse settings to the client */
#ifdef CONFIG_NX_MOUSE
nxmu_mousereport(wnd);

110
graphics/nxmu/nxmu_releasebkgd.c Normal file
View File

@ -0,0 +1,110 @@
/****************************************************************************
* graphics/nxsu/nxmu_releasebkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxmu_releasebkgd
*
* Description:
* Release the background window previously acquired using nxmu_openbgwindow
* and return control of the background to NX.
*
* Input Parameters:
* fe - The front-end state structure
*
* Return:
* None
*
****************************************************************************/
void nxmu_releasebkgd(FAR struct nxfe_state_s *fe)
{
FAR struct nxbe_state_s *be = &fe->be;
#ifdef CONFIG_DEBUG
if (!fe)
{
return;
}
#endif
/* Destroy the client window callbacks* and restore the server
* connection.
*/
be->bkgd.cb = NULL;
be->bkgd.conn = &fe->conn;
/* Redraw the background window */
nxfe_redrawreq(&be->bkgd, &be->bkgd.bounds);
}

122
graphics/nxmu/nxmu_requestbkgd.c Normal file
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@ -0,0 +1,122 @@
/****************************************************************************
* graphics/nxmu/nxmu_requestbkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxmu_requestbkgd
*
* Description:
* Perform the server-side operation for the nx_requestbkgd operation:
* Give the client control of the background window connection and receipt
* of all background window callbacks.
*
* conn - The client containing connection information [IN]
* be - The server state structure [IN]
* cb - Callbacks used to process window events
*
* Return:
* None
*
****************************************************************************/
void nxmu_requestbkgd(FAR struct nxfe_conn_s *conn,
FAR struct nxbe_state_s *be,
FAR const struct nx_callback_s *cb)
{
#ifdef CONFIG_DEBUG
if (!conn || !be || !cb)
{
errno = EINVAL;
}
#endif
/* Set the client's callback vtable and and replace the server
* connection with the clients connection.
*/
be->bkgd.cb = cb;
be->bkgd.conn = conn;
/* Report the size/position of the background window to the client */
nxfe_reportposition((NXWINDOW)&be->bkgd);
/* Redraw the background window */
nxfe_redrawreq(&be->bkgd, &be->bkgd.bounds);
/* Provide the mouse settings */
#ifdef CONFIG_NX_MOUSE
nxsu_mousereport(be->bkgd);
#endif
}

13
graphics/nxmu/nxmu_server.c
View File

@ -389,6 +389,19 @@ int nx_runinstance(FAR const char *mqname, FAR struct fb_vtable_s *fb)
}
break;
case NX_SVRMSG_REQUESTBKGD: /* Give access to the background window */
{
FAR struct nxsvrmsg_requestbkgd_s *rqbgmsg = (FAR struct nxsvrmsg_requestbkgd_s *)buffer;
nxmu_requestbkgd(rqbgmsg->conn, &fe.be, rqbgmsg->cb);
}
break;
case NX_SVRMSG_RELEASEBKGD: /* End access to the background window */
{
nxmu_releasebkgd(&fe);
}
break;
case NX_SVRMSG_SETPOSITION: /* Change window position */
{
FAR struct nxsvrmsg_setposition_s *setposmsg = (FAR struct nxsvrmsg_setposition_s *)buffer;

7
graphics/nxsu/Make.defs
View File

@ -35,8 +35,9 @@
NX_ASRCS =
NXAPI_CSRCS = nx_bitmap.c nx_close.c nx_closewindow.c nx_fill.c \
nx_filltrapezoid.c nx_getposition.c nx_kbdchin.c nx_kbdin.c \
nx_lower.c nx_mousein.c nx_move.c nx_open.c nx_openwindow.c \
nx_raise.c nx_setsize.c nx_setbgcolor.c nx_setposition.c
nx_filltrapezoid.c nx_getposition.c nx_kbdchin.c \
nx_kbdin.c nx_lower.c nx_mousein.c nx_move.c nx_open.c \
nx_openwindow.c nx_raise.c nx_releasebkgd.c nx_requestbkgd.c \
nx_setsize.c nx_setbgcolor.c nx_setposition.c
NXSU_CSRCS = nxsu_redrawreq.c nxsu_reportposition.c
NX_CSRCS = $(NXAPI_CSRCS) $(NXSU_CSRCS)

9
graphics/nxsu/nx_open.c
View File

@ -67,7 +67,11 @@ static void nxsu_bkgdredraw(NXWINDOW hwnd,
* Private Data
****************************************************************************/
static const struct nx_callback_s g_bkgdcb =
/****************************************************************************
* Public Data
****************************************************************************/
const struct nx_callback_s g_bkgdcb =
{
nxsu_bkgdredraw, /* redraw */
NULL /* position */
@ -78,9 +82,6 @@ static const struct nx_callback_s g_bkgdcb =
, NULL /* my kbdin */
#endif
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions

110
graphics/nxsu/nx_releasebkgd.c Normal file
View File

@ -0,0 +1,110 @@
/****************************************************************************
* graphics/nxsu/nx_releasebkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_releasebkgd
*
* Description:
* Release the background window previously acquired using nx_openbgwindow
* and return control of the background to NX.
*
* Input Parameters:
* hwnd - The handle returned (indirectly) by nx_requestbkgd
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
void nx_releasebkgd(NXWINDOW hwnd)
{
FAR struct nxfe_state_s *fe = (FAR struct nxfe_state_s *)hwnd;
FAR struct nxbe_state_s *be = &fe->be;
#ifdef CONFIG_DEBUG
if (!fe)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Restore the NX background window callbacks */
be->bkgd.cb = &g_bkgdcb;
/* Redraw the background window */
nxfe_redrawreq(&be->bkgd, &be->bkgd.bounds);
return OK;
}

153
graphics/nxsu/nx_requestbkgd.c Normal file
View File

@ -0,0 +1,153 @@
/****************************************************************************
* graphics/nxsu/nx_requestbkgd.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 <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_requestbkgd
*
* Description:
* NX normally controls a separate window called the background window.
* It repaints the window as necessary using only a solid color fill. The
* background window always represents the entire screen and is always
* below other windows. It is useful for an application to control the
* background window in the following conditions:
*
* - If you want to implement a windowless solution. The single screen
* can be used to creat a truly simple graphic environment. In this
* case, you should probably also de-select CONFIG_NX_MULTIUSER as well.
* - When you want more on the background than a solid color. For
* example, if you want an image in the background, or animations in the
* background, or live video, etc.
*
* This API only requests the handle of the background window. That
* handle will be returned asynchronously in a subsequent position and
* redraw callbacks.
*
* Cautions:
* - The following should never be called using the background window.
* They are guaranteed to cause severe crashes:
*
* nx_setposition, nx_setsize, nx_raise, nx_lower.
*
* - Neither nx_opengbwindow or nx_closebgwindow should be called more than
* once. Multiple instances of the background window are not supported.
*
* Input Parameters:
* handle - The handle returned by nx_connect
* cb - Callbacks to use for processing background window events
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
int nx_requestbkgd(NXHANDLE handle, FAR const struct nx_callback_s *cb)
{
FAR struct nxfe_state_s *fe = (FAR struct nxfe_state_s *)handle;
FAR struct nxbe_state_s *be = &fe->be;
#ifdef CONFIG_DEBUG
if (!fe || !cb)
{
errno = EINVAL;
return ERROR;
}
#endif
/* Replace the NX background windo callbacks with the client's callbacks */
be->bkgd.cb = cb;
/* Report the size/position of the background window to the client */
nxfe_reportposition((NXWINDOW)&be->bkgd);
/* Redraw the background window */
nxfe_redrawreq(&be->bkgd, &be->bkgd.bounds);
/* Provide the mouse settings to the client */
#ifdef CONFIG_NX_MOUSE
nxsu_mousereport(be->bkgd);
#endif
/* In this single-user mode, we could return the background window
* handle here. However, we cannot do that in the multi-user case
* because that handle is known only to the server. Instead, the
* background window handle is returned to the client via a redraw
* callback. So we will do the same in the single-user case for
* compatibility.
*/
return OK;
}

2
graphics/nxsu/nxfe.h
View File

@ -88,6 +88,8 @@ extern "C" {
#define EXTERN extern
#endif
EXTERN const struct nx_callback_s g_bkgdcb;
/****************************************************************************
* Public Functions
****************************************************************************/

58
include/nuttx/nx.h
View File

@ -376,6 +376,64 @@ EXTERN NXWINDOW nx_openwindow(NXHANDLE handle,
EXTERN int nx_closewindow(NXWINDOW hwnd);
/****************************************************************************
* Name: nx_requestbkgd
*
* Description:
* NX normally controls a separate window called the background window.
* It repaints the window as necessary using only a solid color fill. The
* background window always represents the entire screen and is always
* below other windows. It is useful for an application to control the
* background window in the following conditions:
*
* - If you want to implement a windowless solution. The single screen
* can be used to creat a truly simple graphic environment. In this
* case, you should probably also de-select CONFIG_NX_MULTIUSER as well.
* - When you want more on the background than a solid color. For
* example, if you want an image in the background, or animations in the
* background, or live video, etc.
*
* This API only requests the handle of the background window. That
* handle will be returned asynchronously in a subsequent position and
* redraw callbacks.
*
* Cautions:
* - The following should never be called using the background window.
* They are guaranteed to cause severe crashes:
*
* nx_setposition, nx_setsize, nx_raise, nx_lower.
*
* - Neither nx_opengbwindow or nx_closebgwindow should be called more than
* once. Multiple instances of the background window are not supported.
*
* Input Parameters:
* handle - The handle returned by nx_connect
* cb - Callbacks to use for processing background window events
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
EXTERN int nx_requestbkgd(NXHANDLE handle, FAR const struct nx_callback_s *cb);
/****************************************************************************
* Name: nx_releasebkgd
*
* Description:
* Release the background window previously acquired using nx_openbgwindow
* and return control of the background to NX.
*
* Input Parameters:
* hwnd - The handle returned (indirectly) by nx_requestbkgd
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
EXTERN int nx_releasebkgd(NXWINDOW hwnd);
/****************************************************************************
* Name: nx_getposition
*