First check-in of NxWidgets

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4505 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 202 insertions, 0 deletions

diff --git a/NxWidgets/libnxwidgets/src/singletons.cxx b/NxWidgets/libnxwidgets/src/singletons.cxx
new file mode 100644
index 000000000..fc5d919e6
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+++ b/NxWidgets/libnxwidgets/src/singletons.cxx
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+/****************************************************************************
+ * NxWidgets/libnxwidgets/src/singletons.cxx
+ *
+ *   Copyright (C) 2012 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, NxWidgets, nor the names of its contributors
+ *    me 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.
+ *
+ ****************************************************************************
+ *
+ * Portions of this package derive from Woopsi (http://woopsi.org/) and
+ * portions are original efforts.  It is difficult to determine at this
+ * point what parts are original efforts and which parts derive from Woopsi.
+ * However, in any event, the work of  Antony Dzeryn will be acknowledged
+ * in most NxWidget files.  Thanks Antony!
+ *
+ *   Copyright (c) 2007-2011, Antony Dzeryn
+ *   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the names "Woopsi", "Simian Zombie" 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 Antony Dzeryn ``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 Antony Dzeryn 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 <stdint.h>
+#include <stdbool.h>
+#include <sched.h>
+#include <debug.h>
+
+#include "nxconfig.hxx"
+#include "cnxserver.hxx"
+#include "cnxstring.hxx"
+#include "cwidgetstyle.hxx"
+#include "cnxfont.hxx"
+#include "singletons.hxx"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Static Data
+ ****************************************************************************/
+
+using namespace NXWidgets;
+
+CWidgetStyle        *NXWidgets::g_defaultWidgetStyle; /**< The default widget style */
+CNxString           *NXWidgets::g_nullString;         /**< The reusable empty string */
+TNxArray<CNxTimer*> *NXWidgets::g_nxTimers;           /**< An array of all timers */
+
+/****************************************************************************
+ * Method Implementations
+ ****************************************************************************/
+
+/**
+ * Setup misc singleton instances.  Why is there here?  Because it needs to be
+ * done one time before any widgets are created.  So why isn't it just the
+ * default style just a statically constructed class?  Because not all platforms
+ * will support static class constructions.
+ */
+
+void NXWidgets::instantiateSingletons(void)
+{
+  // Disable pre-emption.  Since we are dealing with global resources here we
+  // are not inherently thread-safe.
+
+  sched_lock();
+
+  // Create a global, empty string that may be used whereever a string is
+  // required, but not needed.
+
+  if (!g_nullString)
+    {
+      g_nullString = new CNxString();
+    }
+
+  // Setup the default widget style
+
+  if (!g_defaultWidgetStyle)
+    {
+      // Create the singleton
+ 
+      g_defaultWidgetStyle                   = new CWidgetStyle();
+
+      // Default colors
+
+      g_defaultWidgetStyle->colors.background         = CONFIG_NXWIDGETS_DEFAULT_BACKGROUNDCOLOR;
+      g_defaultWidgetStyle->colors.selectedBackground = CONFIG_NXWIDGETS_DEFAULT_SELECTEDBACKGROUNDCOLOR;
+      g_defaultWidgetStyle->colors.shineEdge          = CONFIG_NXWIDGETS_DEFAULT_SHINEEDGECOLOR;
+      g_defaultWidgetStyle->colors.shadowEdge         = CONFIG_NXWIDGETS_DEFAULT_SHADOWEDGECOLOR;
+      g_defaultWidgetStyle->colors.highlight          = CONFIG_NXWIDGETS_DEFAULT_HIGHLIGHTCOLOR;
+
+      g_defaultWidgetStyle->colors.disabledText       = CONFIG_NXWIDGETS_DEFAULT_DISABLEDTEXTCOLOR;
+      g_defaultWidgetStyle->colors.enabledText        = CONFIG_NXWIDGETS_DEFAULT_ENABLEDTEXTCOLOR;
+      g_defaultWidgetStyle->colors.selectedText       = CONFIG_NXWIDGETS_DEFAULT_SELECTEDTEXTCOLOR;
+
+      // Default font using the default font ID and the default font colors
+
+      g_defaultWidgetStyle->font = new CNxFont((enum nx_fontid_e)CONFIG_NXWIDGETS_DEFAULT_FONTID,
+                                               CONFIG_NXWIDGETS_DEFAULT_FONTCOLOR,
+                                               CONFIG_NXWIDGETS_TRANSPARENT_COLOR);
+    }
+
+  // Create the timer list
+
+  if (!g_nxTimers)
+    {
+      g_nxTimers = new TNxArray<CNxTimer*>();
+    }
+
+  sched_unlock();
+}
+
+/**
+ * Free the singleton instances when the last NX server is destroyed.
+ */
+
+void NXWidgets::freeSingletons(void)
+{
+  // Delete the null string singleton
+
+  if (g_nullString)
+    {
+      delete g_nullString;
+      g_nullString = (CNxString *)NULL;
+    }
+
+  // Delete the default widget style singleton
+
+  if (g_defaultWidgetStyle)
+    {
+      if (g_defaultWidgetStyle->font)
+        {
+          delete g_defaultWidgetStyle->font;
+        }
+
+      delete g_defaultWidgetStyle;
+      g_defaultWidgetStyle = (CWidgetStyle *)NULL;
+    }
+
+  // Free the timer list
+
+  if (g_nxTimers)
+    {
+      delete g_nxTimers;
+      g_nxTimers = (TNxArray<CNxTimer*> *)NULL;
+    }
+
+}
+