1 files changed, 129 insertions, 0 deletions
diff --git a/nuttx/graphics/nxbe/nxbe_closewindow.c b/nuttx/graphics/nxbe/nxbe_closewindow.c
new file mode 100644
index 000000000..8987b898b
--- /dev/null
+++ b/nuttx/graphics/nxbe/nxbe_closewindow.c
@@ -0,0 +1,129 @@
+/****************************************************************************
+ * graphics/nxbe/nxbe_closewindow.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 <assert.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: nxbe_closewindow
+ *
+ * Description:
+ *   Close an existing window
+ *
+ * Input Parameters:
+ *   wnd  - The window to be closed (and deallocated)
+ *
+ * Return:
+ *   None
+ *
+ ****************************************************************************/
+
+void nxbe_closewindow(struct nxbe_window_s *wnd)
+{
+  FAR struct nxbe_state_s *be = wnd->be;
+#ifdef CONFIG_DEBUG
+  if (!wnd)
+    {
+      return;
+    }
+
+  /* The background window should never be closed */
+
+  DEBUGASSERT(wnd != &be->bkgd);
+#endif
+
+  /* Is there a window above the one being closed? */
+
+  if (wnd->above)
+    {
+      /* Yes, now the window below that on is the window below
+       * the one being closed.
+       */
+
+      wnd->above->below = wnd->below;
+    }
+  else
+    {
+      /* No, then the top window is the one below this (which
+       * can never be NULL because the background window is
+       * always at the true bottom of the list
+       */
+
+      be->topwnd = wnd->below;
+    }
+
+  /* There is always a window below the one being closed (because
+   * the background is never closed.  Now, the window above that
+   * is the window above the one that is being closed.
+   */
+
+  wnd->below->above = wnd->above;
+  free(wnd);
+}