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Squashed commit of the following:

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graphics:  nx_openwindow() and nxtk_openwindow() now accept an addtional 'flag' parameter.  This argument is not used at present but will, eventually enable a RAM backed, per-window framebuffer.

    graphics/Kconfig:  Add configuration to support a rambacked framebuffer. Current marked as EXPERIMENTAL because this is a work in progress.
This commit is contained in:
Gregory Nutt
2019-03-13 12:34:13 -06:00
parent 0454ae2a10
commit 8a46b1f488
13 changed files with 128 additions and 112 deletions
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libs/libnx/nxtk/nxtk_openwindow.c
+10 -5
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@@ -1,7 +1,8 @@
/****************************************************************************
* libs/libnx/nxtk/nxtk_openwindow.c
*
* Copyright (C) 2008-2009, 2012-2013 Gregory Nutt. All rights reserved.
* Copyright (C) 2008-2009, 2012-2013, 2019 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -88,6 +89,9 @@ nxgl_mxpixel_t g_bordercolor3[CONFIG_NX_NPLANES] =
*
* Input Parameters:
* handle - The handle returned by nx_connect
* flags - Optional flags. Must be zero unless CONFIG_NX_RAMBACKED is
* enabled. In that case, it may be zero or
* NXBE_WINDOW_RAMBACKED
* cb - Callbacks used to process window events
* arg - User provided value that will be returned with NXTK callbacks.
*
@@ -97,7 +101,7 @@ nxgl_mxpixel_t g_bordercolor3[CONFIG_NX_NPLANES] =
*
****************************************************************************/
NXTKWINDOW nxtk_openwindow(NXHANDLE handle,
NXTKWINDOW nxtk_openwindow(NXHANDLE handle, uint8_t flags,
FAR const struct nx_callback_s *cb,
FAR void *arg)
{
@@ -105,7 +109,7 @@ NXTKWINDOW nxtk_openwindow(NXHANDLE handle,
int ret;
#ifdef CONFIG_DEBUG_FEATURES
if (!handle || !cb)
if (handle == NULL || cb == NULL)
{
set_errno(EINVAL);
return NULL;
@@ -117,7 +121,7 @@ NXTKWINDOW nxtk_openwindow(NXHANDLE handle,
fwnd = (FAR struct nxtk_framedwindow_s *)
lib_uzalloc(sizeof(struct nxtk_framedwindow_s));
if (!fwnd)
if (fwnd == NULL)
{
set_errno(ENOMEM);
return NULL;
@@ -130,7 +134,8 @@ NXTKWINDOW nxtk_openwindow(NXHANDLE handle,
/* Then let nx_constructwindow do the rest */
ret = nx_constructwindow(handle, (NXWINDOW)&fwnd->wnd, &g_nxtkcb, NULL);
ret = nx_constructwindow(handle, (NXWINDOW)&fwnd->wnd, flags, &g_nxtkcb,
NULL);
if (ret < 0)
{
/* An error occurred, the window has been freed */