examples/QtQuick/contentlauncherexample/mifprovider/mifimageprovider.cpp

/*
* Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This software, including documentation is protected by copyright controlled
* by Nokia Corporation. Copying, including reproducing, storing, adapting or
* translating, any or all of this material can only be done in accordance
* with the Nokia Symbian License version 1.0 (or any subsequent update) or
* any other license terms expressly agreed between you and Nokia.
* This material contains Nokia's confidential information which
* may not be disclosed to others without the prior written consent of Nokia.
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/

#include "mifimageprovider.h"
#include "contentlauncherlog.h"

#include <aknsutils.h>
#include <e32std.h>
#include <e32base.h>
#include <fbs.h>
#include <e32cmn.h>
#include <e32des8.h>

#include <QUrl>
#include <QPixmap>
#include <QBitmap>
#include <QFile>

namespace {
  const int KDefaultIconWidth = 32;
  const int KDefaultIconHeight = 32;
}

MifImageProvider::MifImageProvider()
         : QDeclarativeImageProvider(QDeclarativeImageProvider::Pixmap)
     {
     }

QPixmap MifImageProvider::requestPixmap(const QString &id, QSize *size, const QSize &requestedSize)
     {
     QPixmap pixmap;
     CFbsBitmap *image = 0;
     CFbsBitmap *mask = 0;

     try {
         CL_ENTER << "id:" << id << "size:" << size << "requestedSize:" << requestedSize;

         QUrl urlName(id);
         QString fname(urlName.toLocalFile().replace("/", "\\"));

         if (QFile::exists(fname)) {
             TPtrC16 filenamePtr(reinterpret_cast<const TUint16*>(fname.utf16()));

             CL_QDEBUG << "size:" << *size;

             TSize bmpSize(requestedSize.width() > 0 ? requestedSize.width() : KDefaultIconWidth,
                 requestedSize.height() > 0 ? requestedSize.height() : KDefaultIconHeight);

             CL_QDEBUG << "bitmap requested size: " << bmpSize.iWidth << "x" << bmpSize.iHeight;

             QT_TRAP_THROWING(LoadImageL(image, mask, filenamePtr, 1, 1, bmpSize));

             CL_QDEBUG << "bitmap retrieved size:" << image->SizeInPixels().iWidth << "x" << image->SizeInPixels().iHeight;
             CL_QDEBUG << "bitmap display mode:" << image->DisplayMode();
             CL_QDEBUG << "bitmap data size:" << image->DataSize();

             CL_QDEBUG << "mask retrieved size:" << mask->SizeInPixels().iWidth << "x" << mask->SizeInPixels().iHeight;
             CL_QDEBUG << "mask display mode:" << mask->DisplayMode();
             CL_QDEBUG << "mask data size:" << mask->DataSize();

             pixmap = QPixmap::fromSymbianCFbsBitmap(image);
             QBitmap pixmapMask = QPixmap::fromSymbianCFbsBitmap(mask).createMaskFromColor(Qt::white, Qt::MaskOutColor);
             pixmap.setMask(pixmapMask);

             if (size) {
                 size->setWidth(pixmap.width());
                 size->setHeight(pixmap.height());
             }

         } else {
             CL_QDEBUG << "could not find given file:" << fname;
         }

         CL_QDEBUG << "pixmap:" << pixmap.size();
     } catch (const std::exception &e) {
         CL_QDEBUG << "exception:" << e.what();
     }
     delete mask;
     delete image;

     CL_EXIT;
     return pixmap;
}

void MifImageProvider::LoadImageL(CFbsBitmap *&aImage, CFbsBitmap *&aMask, const TDesC& aFileName, TInt aImg,
        TInt aMsk, const TSize& aSize)
{
    CL_ENTER;
    TInt MaskId(aMsk);
    TInt UseIndex(aImg);
    if (AknIconUtils::IsMifFile(aFileName)) {
        AknIconUtils::ValidateLogicalAppIconId(aFileName, UseIndex, MaskId);
    }
    AknIconUtils::CreateIconL(aImage, aMask, aFileName, UseIndex, MaskId);
    AknIconUtils::SetSize(aImage, aSize, EAspectRatioPreserved);
    AknIconUtils::SetSize(aMask, aSize, EAspectRatioPreserved);
    aMask->SetDisplayMode(EGray2);
    CL_EXIT;
}

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