1 files changed, 137 insertions, 0 deletions
diff --git a/src/Authoring/Qt3DStudio/Utils/ResourceCache.cpp b/src/Authoring/Qt3DStudio/Utils/ResourceCache.cpp
new file mode 100644
index 00000000..c51a01f0
--- /dev/null
+++ b/src/Authoring/Qt3DStudio/Utils/ResourceCache.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** 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();
+}