Can't use signal handler for nx_eventhandler()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1387 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 319 insertions, 0 deletions

diff --git a/nuttx/examples/nx/nx_events.c b/nuttx/examples/nx/nx_events.c
new file mode 100644
index 000000000..9d6b2f055
--- /dev/null
+++ b/nuttx/examples/nx/nx_events.c
@@ -0,0 +1,319 @@
+/****************************************************************************
+ * examples/nx/nx_events.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 <semaphore.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/nx.h>
+#include "nx_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static void nxeg_redraw1(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+                         boolean morem, FAR void *arg);
+static void nxeg_redraw2(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+                         boolean more, FAR void *arg);
+static void nxeg_position1(NXWINDOW hwnd, FAR const struct nxgl_rect_s *size,
+                           FAR const struct nxgl_point_s *pos,
+                           FAR const struct nxgl_rect_s *bounds,
+                           FAR void *arg);
+static void nxeg_position2(NXWINDOW hwnd, FAR const struct nxgl_rect_s *size,
+                           FAR const struct nxgl_point_s *pos,
+                           FAR const struct nxgl_rect_s *bounds,
+                           FAR void *arg);
+#ifdef CONFIG_NX_MOUSE
+static void nxeg_mousein1(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
+                          ubyte buttons, FAR void *arg);
+static void nxeg_mousein2(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
+                          ubyte buttons, FAR void *arg);
+#endif
+#ifdef CONFIG_NX_KBD
+static void nxeg_kbdin(NXWINDOW hwnd, ubyte nch, const ubyte *ch);
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+const struct nx_callback_s g_nxcb1 =
+{
+  nxeg_redraw1,   /* redraw */
+  nxeg_position1  /* position */
+#ifdef CONFIG_NX_MOUSE
+  , nxeg_mousein1 /* mousein */
+#endif
+#ifdef CONFIG_NX_KBD
+  , nxeg_kbdin1   /* my kbdin */
+#endif
+};
+
+const struct nx_callback_s g_nxcb2 =
+{
+  nxeg_redraw2,   /* redraw */
+  nxeg_position2  /* position */
+#ifdef CONFIG_NX_MOUSE
+  , nxeg_mousein2 /* mousein */
+#endif
+#ifdef CONFIG_NX_KBD
+  , nxeg_kbdin2   /* my kbdin */
+#endif
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxeg_redraw1
+ ****************************************************************************/
+
+static void nxeg_redraw1(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+                         boolean more, FAR void *arg)
+{
+  message("nxeg_redraw%d: hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n",
+           (int)arg, hwnd,
+           rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
+           more ? "TRUE" : "FALSE");
+  nx_fill(hwnd, rect, g_color1);
+}
+
+/****************************************************************************
+ * Name: nxeg_redraw2
+ ****************************************************************************/
+
+static void nxeg_redraw2(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+                         boolean more, FAR void *arg)
+{
+  message("nxeg_redraw%d: hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n",
+           (int)arg, hwnd,
+           rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
+           more ? "TRUE" : "FALSE");
+  nx_fill(hwnd, rect, g_color2);
+}
+
+/****************************************************************************
+ * Name: nxeg_position1
+ ****************************************************************************/
+
+static void nxeg_position1(NXWINDOW hwnd, FAR const struct nxgl_rect_s *size,
+                           FAR const struct nxgl_point_s *pos,
+                           FAR const struct nxgl_rect_s *bounds,
+                           FAR void *arg)
+{
+  /* Report the position */
+
+  message("nxeg_position%d: hwnd=%p size={(%d,%d),(%d,%d)} pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n",
+           arg, hwnd,
+           size->pt1.x, size->pt1.y, size->pt2.x, size->pt2.y,
+           pos->x, pos->y,
+           bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y);
+
+  /* Have we picked off the window bounds yet? */
+
+  if (!b_haveresolution)
+    {
+      /* Save the window limits (these should be the same for all places and all windows */
+
+      g_xres = bounds->pt2.x;
+      g_yres = bounds->pt2.y;
+
+      b_haveresolution = TRUE;
+      sem_post(&g_semevent);
+      message("nxeg_position2: Have xres=%d yres=%d\n", g_xres, g_yres);
+    }
+}
+
+/****************************************************************************
+ * Name: nxeg_position2
+ ****************************************************************************/
+
+static void nxeg_position2(NXWINDOW hwnd, FAR const struct nxgl_rect_s *size,
+                           FAR const struct nxgl_point_s *pos,
+                           FAR const struct nxgl_rect_s *bounds,
+                           FAR void *arg)
+{
+  /* Report the position */
+
+  message("nxeg_position%d: hwnd=%p size={(%d,%d),(%d,%d)} pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n",
+           arg, hwnd,
+           size->pt1.x, size->pt1.y, size->pt2.x, size->pt2.y,
+           pos->x, pos->y,
+           bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y);
+}
+
+/****************************************************************************
+ * Name: nxeg_mousein1
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_MOUSE
+static void nxeg_mousein1(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
+                          ubyte buttons, FAR void *arg)
+{
+  message("nxeg_mousein%d: hwnd=%p pos=(%d,%d) button=%02x\n",
+           (int)arg, hwnd,  pos->x, pos->y, buttons);
+}
+#endif
+
+/****************************************************************************
+ * Name: nxeg_mousein2
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_MOUSE
+static void nxeg_mousein2(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
+                          ubyte buttons, FAR void *arg)
+{
+  message("nxeg_mousein%d: hwnd=%p pos=(%d,%d) button=%02x\n",
+          (int)arg, hwnd,  pos->x, pos->y, buttons);
+}
+#endif
+
+/****************************************************************************
+ * Name: nxeg_kbdinfo
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_KBD
+static void nxeg_kbdinfo(ubyte nch, const ubyte *ch)
+{
+  int i;
+  for (i = 0; i < nch; i++)
+    {
+      if (isprint(ch[i]))
+        {
+          message("          ch[%d]=  (%02x)", i, ch[i]);
+        }
+      else
+        {
+          message("          ch[%d]=%c (%02x)", i, ch[i], ch[i]);
+        }
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: nxeg_kbdin1
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_KBD
+static void nxeg_kbdin1(NXWINDOW hwnd, ubyte nch, const ubyte *ch)
+{
+  message("nxeg_kbdin1: hwnd=%p nch=%d\n", hwnd, nch);
+  nxeg_kbdinfo(nch, ch);
+}
+#endif
+
+/****************************************************************************
+ * Name: nxeg_kbdin2
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_KBD
+static void nxeg_kbdin2(NXWINDOW hwnd, ubyte nch, const ubyte *ch)
+{
+  message("nxeg_kbdin2: hwnd=%p nch=%d\n", hwnd, nch);
+  nxeg_kbdinfo(nch, ch);
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nx_listenerthread
+ ****************************************************************************/
+
+#ifdef CONFIG_NX_MULTIUSER
+FAR void *nx_listenerthread(FAR void *arg)
+{
+  int ret;
+
+  /* Set up to catch a signal */
+
+  /* Process events forever */
+
+  for (;;)
+    {
+      /* Handle the next event.  If we were configured blocking, then
+       * we will stay right here until the next event is received.  Since
+       * we have dedicated a while thread to servicing events, it would
+       * be most natural to also select CONFIG_NX_BLOCKING -- if not, the
+       * following would be a tight infinite loop (unless we added addition
+       * logic with nx_eventnotify and sigwait to pace it).
+       */
+
+      ret = nx_eventhandler(g_hnx);
+      if (ret < 0)
+        {
+          /* An error occurred... assume that we have lost connection with
+           * the server.
+           */
+
+          message("nx_listenerthread: Lost server connection: %d\n", errno);
+          exit(NXEXIT_LOSTSERVERCONN);
+        }
+
+      /* If we received a message, we must be connected */
+
+      if (!g_connected)
+        {
+          g_connected = TRUE;
+          sem_post(&g_semevent);
+          message("nx_listenerthread: Connected\n");
+        }
+    }
+}
+#endif