graphics/, lib/libnx, include/nutt/nx: Add support for modal windows.

libs/libnx/nxtk/Make.defs

@@ -37,21 +37,22 @@
 
 ifeq ($(CONFIG_NX),y)
 
-CSRCS += nxtk_openwindow.c nxtk_closewindow.c nxtk_getposition.c
-CSRCS += nxtk_setposition.c nxtk_setsize.c nxtk_raise.c nxtk_lower.c
-CSRCS += nxtk_fillwindow.c nxtk_getwindow.c nxtk_filltrapwindow.c
-CSRCS += nxtk_movewindow.c nxtk_bitmapwindow.c nxtk_events.c
-CSRCS += nxtk_setsubwindows.c nxtk_drawcirclewindow.c nxtk_drawlinewindow.c
-CSRCS += nxtk_fillcirclewindow.c nxtk_block.c nxtk_synch.c
+CSRCS += nxtk_setsubwindows.c nxtk_events.c nxtk_block.c nxtk_synch.c
+CSRCS += nxtk_subwindowclip.c nxtk_containerclip.c nxtk_subwindowmove.c
+CSRCS += nxtk_drawframe.c
+CSRCS += nxtk_raise.c nxtk_lower.c nxtk_modal.c
+CSRCS += nxtk_setposition.c nxtk_getposition.c nxtk_setsize.c
+
+CSRCS += nxtk_openwindow.c nxtk_closewindow.c nxtk_fillwindow.c
+CSRCS += nxtk_getwindow.c nxtk_filltrapwindow.c nxtk_movewindow.c
+CSRCS += nxtk_bitmapwindow.c nxtk_drawcirclewindow.c nxtk_drawlinewindow.c
+CSRCS += nxtk_fillcirclewindow.c
 
 CSRCS += nxtk_opentoolbar.c nxtk_closetoolbar.c nxtk_filltoolbar.c
 CSRCS += nxtk_gettoolbar.c nxtk_filltraptoolbar.c nxtk_movetoolbar.c
 CSRCS += nxtk_bitmaptoolbar.c nxtk_drawcircletoolbar.c nxtk_drawlinetoolbar.c
 CSRCS += nxtk_fillcircletoolbar.c nxtk_toolbarbounds.c
 
-CSRCS += nxtk_subwindowclip.c nxtk_containerclip.c nxtk_subwindowmove.c
-CSRCS += nxtk_drawframe.c
-
 # Add the nxtk/ directory to the build
 
 DEPPATH += --dep-path nxtk

libs/libnx/nxtk/nxtk_modal.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libs/libnx/nxtk/nxtk_modal.c
+ *
+ *   Copyright (C) 2019 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <stdlib.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/nx/nx.h>
+#include <nuttx/nx/nxtk.h>
+
+#include "nxtk.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxtk_modal
+ *
+ * Description:
+ *   May be used to either (1) raise a window to the top of the display and
+ *   select modal behavior, or (2) disable modal behavior.
+ *
+ * Input Parameters:
+ *   hfwnd - The window to be modified
+ *   modal - True: enter modal state; False: leave modal state
+ *
+ * Returned Value:
+ *   OK on success; ERROR on failure with errno set appropriately
+ *
+ ****************************************************************************/
+
+int nxtk_modal(NXTKWINDOW hfwnd, bool modal)
+{
+  return nx_modal((NXWINDOW)hfwnd, modal);
+}