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/****************************************************************************
**
** Copyright (C) 2002 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "Qt3DSCommonPrecompile.h"
#include "ResourceCache.h"
#include "MouseCursor.h"
#include "StudioUtils.h"
#include <QtCore/qurl.h>
//=============================================================================
/**
* Constructor
*/
CResourceCache::CResourceCache()
{
}
//=============================================================================
/**
* Destructor: releases all loaded resources.
*/
CResourceCache::~CResourceCache()
{
Clear();
}
//=============================================================================
/**
* Returns a default instance of the resource cache so that the whole application
* can use the same cache if desired.
* @return Handle to the default instance of the cache
*/
CResourceCache *CResourceCache::GetInstance()
{
static CResourceCache theCache;
return &theCache;
}
//=============================================================================
/**
* Retrieves a bitmap image of the specified name. Currently only accepts .png
* files.
* @param inName Name of the bitmap file to be fetched
* @return Pointer to a bitmap object or NULL if the image could not be loaded
*/
QPixmap CResourceCache::GetBitmap(const QString &inName)
{
QPixmap theImage;
// If our image name is not empty, then lets get it...
if (!inName.isEmpty()) {
TImageMap::iterator thePos = m_Images.find(inName);
if (thePos != m_Images.end()) {
theImage = thePos->second;
} else {
const QString resPath = QStringLiteral("%1%2").arg(StudioUtils::resourceImagePath(),
inName);
if (theImage.load(resPath))
m_Images[inName] = theImage;
else
qWarning() << Q_FUNC_INFO << "missing image at path:" << resPath;
}
}
return theImage;
}
//=============================================================================
/**
* Retrieves the specified cursor resource. The cursor is loaded if necessary
* otherwise a previously loaded cursor of the same ID is returned.
* @param inResourceID ID of the cursor to be loaded (see SCursor.h)
* @return Pointer to the cursor, or NULL if the cursor could not be loaded
*/
QCursor CResourceCache::GetCursor(CMouseCursor::Qt3DSMouseCursor inResourceID)
{
CMouseCursor *theCursor = NULL;
CMouseCursor::Qt3DSMouseCursor theKey = inResourceID;
TCursorMap::iterator thePos = m_Cursors.find(theKey);
if (thePos != m_Cursors.end()) {
theCursor = thePos->second;
} else {
theCursor = new CMouseCursor();
if (theCursor->Load(inResourceID))
m_Cursors[theKey] = theCursor;
else {
delete theCursor;
theCursor = nullptr;
}
}
return theCursor ? theCursor->GetHandle() : QCursor();
}
//=============================================================================
/**
* Clears all the maps of resources and deletes any associated resources.
* Called by the destructor.
*/
void CResourceCache::Clear()
{
m_Images.clear();
TCursorMap::iterator theCursorPos = m_Cursors.begin();
for (; theCursorPos != m_Cursors.end(); ++theCursorPos) {
CMouseCursor *theCursor = theCursorPos->second;
delete theCursor;
}
m_Cursors.clear();
}
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