OffscreenQmlSurfaceCache.h

//
//  Created by Bradley Austin Davis on 2017-01-11
//  Copyright 2013-2017 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#pragma once
#ifndef hifi_OffscreenQmlSurfaceCache_h
#define hifi_OffscreenQmlSurfaceCahce_h
 
#include "DependencyManager.h"
 
#include <QtCore/QSharedPointer>
 
class QQmlContext;
class OffscreenQmlSurface;
 
class OffscreenQmlSurfaceCache : public Dependency {
    SINGLETON_DEPENDENCY
 
public:
    OffscreenQmlSurfaceCache();
    virtual ~OffscreenQmlSurfaceCache();
 
    QSharedPointer<OffscreenQmlSurface> acquire(const QString& rootSource);
    void release(const QString& rootSource, const QSharedPointer<OffscreenQmlSurface>& surface);
    void reserve(const QString& rootSource, int count = 1);
    void setOnRootContextCreated(const std::function<void(const QString& rootSource, QQmlContext* rootContext)> & onRootContextCreated);
 
private:
    QSharedPointer<OffscreenQmlSurface> buildSurface(const QString& rootSource);
    QHash<QString, QList<QSharedPointer<OffscreenQmlSurface>>> _cache;
    std::function<void(const QString& rootSource, QQmlContext* rootContext)> _onRootContextCreated;
};
 
#endif