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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;
}
}
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