Single-user graphics front-end

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1326 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 168 insertions, 0 deletions

diff --git a/nuttx/graphics/nxsu/nx_open.c b/nuttx/graphics/nxsu/nx_open.c
new file mode 100644
index 000000000..c124ce8ef
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+++ b/nuttx/graphics/nxsu/nx_open.c
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+/****************************************************************************
+ * graphics/nxsu/nx_open.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 <stdio.h>
+#include <stdlib.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: nxsu_setup
+ ****************************************************************************/
+
+static inline int nxsu_setup(FAR struct fb_vtable_s *fb,
+                             FAR struct nxfe_state_s *fe)
+{
+  int ret;
+
+  /* Configure the framebuffer device */
+
+  ret = nxbe_fbconfigure(fb, &fe->be);
+  if (ret < 0)
+    {
+      gdbg("nxs_fbconfigure failed: %d\n", -ret);
+      errno = -ret;
+      return ERROR;
+    }
+
+#if CONFIG_FB_CMAP
+  ret = nxbe_colormap(fb);
+  if (ret < 0)
+    {
+      gdbg("nx_colormap failed: %d\n", -ret);
+      errno = -ret;
+      return ERROR;
+    }
+#endif
+
+ /* Initialize the mouse position */
+
+#ifdef CONFIG_NX_MOUSE
+  nxsu_mouseinit(fe->be.vinfo.xres, fe->be.vinfo.yres);
+#endif
+  return OK;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nx_open
+ *
+ * Description:
+ *   Create, initialize and return an NX handle for use in subsequent
+ *   NX API calls.  nx_open is the single user equivalent of nx_connect
+ *   plus nx_run.
+ *
+ * Input Parameters:
+ *   fb - Vtable "object" of the framebuffer "driver" to use
+ *   cb - Callbacks used to process received NX server messages
+ *
+ * Return:
+ *   Success: A non-NULL handle used with subsequent NX accesses
+ *   Failure:  NULL is returned and errno is set appropriately
+ *
+ ****************************************************************************/
+
+NXHANDLE nx_open(FAR struct fb_vtable_s *fb, FAR const struct nx_callback_s *cb)
+{
+  FAR struct nxfe_state_s *fe;
+  int ret;
+
+  /* Sanity checking */
+
+#ifdef CONFIG_DEBUG
+  if (!cb)
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+#endif
+
+  /* Allocate the NX state structure */
+
+  fe = (FAR struct nxfe_state_s *)zalloc(sizeof(struct nxfe_state_s));
+  if (!fe)
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  /* Save the callback vtable */
+
+  fe->cb = cb;
+
+  /* Initialize and configure the server */
+
+  ret = nxsu_setup(fb, fe);
+  if (ret < 0)
+    {
+      return NULL; /* nxsu_setup sets errno */
+    }
+
+  return (NXHANDLE)fe;
+}
+