cxMultiViewCache.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/

#include "cxMultiViewCache.h"
#include "vtkRenderWindow.h"
#include "cxViewService.h"
#include "cxRenderWindowFactory.h"

namespace cx
{

MultiViewCache::MultiViewCache(RenderWindowFactoryPtr factory) :
        mRenderWindowFactory(factory)
{
        // add a hidden window in order to handle the shared context (ref hack in vtkRenderWindow descendants
        // that add support for shared gl contexts)
        if (!mStaticRenderWindow.GetPointer())
        {
                mStaticRenderWindow = mRenderWindowFactory->getSharedRenderWindow();
                if(mStaticRenderWindow)
                        mStaticRenderWindow->Render();
        }
}

ViewWidget* MultiViewCache::retrieveView(QWidget* widget, View::Type type, bool offScreenRendering)
{
        // create one cache per type. This alleviates cross-settings between 2D and 3D,
        // and also separates on/offscreen rendering, which doesn't mix well.
        QString cache_uid = QString("View_%1_%2").arg(type).arg(offScreenRendering);
        if (!mViewCache.count(cache_uid))
                mViewCache[cache_uid].reset(new ViewCache<ViewWidget>(mRenderWindowFactory, widget, cache_uid));
        ViewCachePtr cache = mViewCache[cache_uid];

        ViewWidget* vw = cache->retrieveView();
        vw->getRenderWindow()->SetOffScreenRendering(offScreenRendering);
        return vw;
}

void MultiViewCache::clearViews()
{
        for (std::map<QString, ViewCachePtr>::iterator iter=mViewCache.begin(); iter!=mViewCache.end(); ++iter)
        {
                iter->second->clearUsedViews();
        }
}

void MultiViewCache::clearCache()
{
        for (std::map<QString, ViewCachePtr>::iterator iter=mViewCache.begin(); iter!=mViewCache.end(); ++iter)
        {
                iter->second->clearCache();
        }

}


} // namespace cx