/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbServers module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbpixmapiconprocessor_p.h"

#include <QStyleOption>

#include <QApplication>

#include <QSvgRenderer>

#include <QPainter>

#include <QPicture>

#include <QFile>

#include "hbpixmapiconimpl_p.h"

#include "hbmemoryutils_p.h"

#include "hbiconsource_p.h"

#include "hbthemeserverutils_p.h"

/*!

    @hbserver

    \class HbPixmapIconProcessor

    \brief HbPixmapIconProcessor is responsible for retrieving the pixmap raster data from the icon file,

    and copy the icon data to the cpu shared memory.

*/

// Constants

static const int HB_BITS_PER_BYTE = 8;

/*!

    \fn HbPixmapIconProcessor::HbPixmapIconProcessor()

    Constructor

    \a key denotes the unique identifier for the cache item

    \a options indicate different ways of loading icons

    \a format indicates the icon format e.g. svg/nvg etc.

 */

HbPixmapIconProcessor::HbPixmapIconProcessor(

    const HbIconKey &key,

    const HbIconLoader::IconLoaderOptions &options,

    const QString &type)

{

    iconKey = key;

    iconOptions = options;

    iconType = type;

    defaultSize = QSize(0, 0);

}

/*!

    \fn HbPixmapIconProcessor::~HbPixmapIconProcessor()

    Destructor

 */

HbPixmapIconProcessor::~HbPixmapIconProcessor()

{

}

/*!

    \fn HbPixmapIconProcessor::sharedIconDataCost()

    Returns the size of the pixel data in bytes.

 */

int HbPixmapIconProcessor::sharedIconDataCost() const

{

    int width = pixmap.size().width();

    int height = pixmap.size().height();

    int depth = pixmap.depth() / HB_BITS_PER_BYTE; // depth in bytes

    return(width * height * depth);

}

/*!

    \fn HbPixmapIconProcessor::sharedIconData()

    Copies the pixmap raster data to the shared memory

 */

HbSharedIconInfo HbPixmapIconProcessor::sharedIconData()const

{

    const QImage image = pixmap.toImage();

        GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory);

        try {

            //alloc function of memory manager can throw

            data.pixmapData.offset =  manager->alloc(image.numBytes());

            data.type = OTHER_SUPPORTED_FORMATS;

            data.pixmapData.format = image.format();

            data.pixmapData.width = image.size().width();

            data.pixmapData.height = image.size().height();

            data.pixmapData.defaultWidth = defaultSize.width();

            data.pixmapData.defaultHeight = defaultSize.height();

            memcpy((char *)manager->base() + data.pixmapData.offset, image.bits(), image.numBytes());

        } catch (std::bad_alloc &badAlloc) {

            Q_UNUSED(badAlloc)

        }

    }

    return data;

}

/*!

    \fn HbPixmapIconProcessor::createPixmapData()

    \a iconpath

 */

bool HbPixmapIconProcessor::createIconData(const QString& iconPath)

{

    bool isIconCreated = false;

    if (iconType == "SVG") {

        isIconCreated = renderSvgToPixmap(iconPath);

    } else if (iconType == "PIC") {

        isIconCreated = renderPicToPixmap(iconPath);

    } else if (iconType == "NVG") {

        isIconCreated = renderNvgToPixmap(iconPath);

#endif //HB_NVG_CS_ICON

    } else {

        isIconCreated = renderOtherFormatsToPixmap(iconPath);

    }

    if (isIconCreated) {

        // Apply mirroring if required

        if (iconKey.mirrored) {

            QTransform t;

            t.scale(-1, 1);

            pixmap = pixmap.transformed(t);

        }

        // Apply color if valid

        if (iconKey.color.isValid()) {

            if (!pixmap.isNull()) {

                QPixmap mask = pixmap.alphaChannel();

                pixmap.fill(iconKey.color);

                pixmap.setAlphaChannel(mask);

            }

        }

        // Apply mode

        if (iconKey.mode != QIcon::Normal) {

            QStyleOption opt(0);

            opt.palette = QApplication::palette();

            pixmap = QApplication::style()->generatedIconPixmap(iconKey.mode, pixmap, &opt);

        }

    }

    return isIconCreated;

}

/*!

    \fn HbPixmapIconProcessor::renderSvgToPixmap()

    \a iconpath

 */

bool HbPixmapIconProcessor::renderSvgToPixmap(const QString& iconPath)

{

    bool isIconCreated = false;

    if (!iconKey.size.isValid()) {

        return isIconCreated;

    }

    bool isDefaultSize =  iconKey.size.isNull();

    HbIconSource *source = HbThemeServerUtils::getIconSource(iconPath);

    QSvgRenderer *svgRenderer = source->svgRenderer();

    if (svgRenderer && svgRenderer->isValid()) {

        QSizeF renderSize = QSizeF(svgRenderer->defaultSize());

        //Save the default size

        defaultSize = renderSize.toSize();

        if (!isDefaultSize) {

            renderSize.scale(iconKey.size, iconKey.aspectRatioMode);

        } else if (iconOptions.testFlag(HbIconLoader::ResolutionCorrected)) {

            applyResolutionCorrection(renderSize);

        }

        pixmap = QPixmap(renderSize.toSize());

        pixmap.fill(Qt::transparent);

        // creating raster data

        QPainter painter;

        painter.begin(&pixmap);

        svgRenderer->render(&painter, QRectF(QPointF(), renderSize.toSize()));

        painter.end();

        isIconCreated = true;

    }

    source->releaseSvgRenderer();

    return isIconCreated;

}

/*!

    \fn HbPixmapIconProcessor::renderPicToPixmap()

    \a iconpath

 */

bool HbPixmapIconProcessor::renderPicToPixmap(const QString& iconPath)

{

    bool isIconCreated = false;

    if (!iconKey.size.isValid()) {

        return isIconCreated;

    }

    bool isDefaultSize =  iconKey.size.isNull();

    HbIconSource *source = HbThemeServerUtils::getIconSource(iconPath);

    QPicture *picture = source->picture();

    QSizeF picSize = QSizeF(picture->boundingRect().size());

    if (picSize.isNull()) {

        return isIconCreated;

    }

    QSizeF renderSize(picSize);

    qreal sx = 1.0;

    qreal sy = 1.0;

    bool scale = false;

    //Save the default size

    defaultSize = picSize.toSize();

    if (!isDefaultSize) {

        scale = true;

        renderSize.scale(iconKey.size, iconKey.aspectRatioMode);

    } else if (iconOptions.testFlag(HbIconLoader::ResolutionCorrected)) {

        applyResolutionCorrection(renderSize);

    }

    if (scale) {

        // Determine scale factor as QPicture doesn't allow for scaling

        sx = renderSize.width() / picSize.width();

        sy = renderSize.height() / picSize.height();

    }

    pixmap = QPixmap(renderSize.toSize());

    pixmap.fill(Qt::transparent);

    QPainter painter;

    painter.begin(&pixmap);

    if (scale) {

        painter.scale(sx, sy);

    }

    painter.drawPicture(QPointF(0.0, 0.0), *picture);

    painter.end();

    isIconCreated = true;

    return isIconCreated;

}

/*!

    \fn HbPixmapIconProcessor::renderOtherFormatsToPixmap()

    \a iconpath

 */

bool HbPixmapIconProcessor::renderOtherFormatsToPixmap(const QString& iconPath)

{

    bool isIconCreated = false;

    if (!iconKey.size.isValid()) {

        return isIconCreated;

    }

    HbIconSource *source = HbThemeServerUtils::getIconSource(iconPath);

    pixmap = QPixmap::fromImage(*source->image());

    if (pixmap.isNull()) {

        return isIconCreated;

    }

    bool isDefaultSize =  iconKey.size.isNull();

    //Save the default size

    defaultSize = pixmap.size();

    if (!isDefaultSize) {

#ifdef ENABLE_EXPERIMENTAL_RESIZE_BOOST__

        // This test implementation improves resize speed up to 5 times..

        // Smooth scaling is very expensive (size^2). Therefore we reduce the size

        // to 1.5 of the destination size and using fast transformation.

        // Therefore we speed up but don't loose quality..

        if (pixmap.size().width() > (4 * iconKey.size.width())) {

            // Improve scaling speed by add an intermediate fast transformation..

            // qDebug() << "Smooth scaling now from size:" << canvasPixmap.size() << "to size:" << size.toSize();

            QSize intermediate_size = QSize(iconKey.size.width() * 2, iconKey.size.height() * 2);

            pixmap = pixmap.scaled(intermediate_size,

                                   aspectRatioMode,

                                   Qt::FastTransformation);  // Cheap operation!

        }

#endif // ENABLE_EXPERIMENTAL_RESIZE_BOOST__

        QPixmap newcanvasPixmap = pixmap.scaled(iconKey.size.toSize(),

                                                iconKey.aspectRatioMode,

                                                Qt::SmoothTransformation);  // Expensive operation!

        if (newcanvasPixmap.size().isEmpty()) {

            pixmap = pixmap.scaled(iconKey.size.toSize(),

                                   iconKey.aspectRatioMode,

                                   Qt::SmoothTransformation);  // Expensive operation!

        } else {

            pixmap = newcanvasPixmap;

        }

    }

    isIconCreated = true;

    // Delete original pixmap if its size is large

    source->deleteImageIfLargerThan(IMAGE_SIZE_LIMIT);

    return isIconCreated;

}

/*!

    \fn HbPixmapIconProcessor::setPixmap()

    \a pixmap

 */

void HbPixmapIconProcessor::setPixmap(const QPixmap & pixmap)

{

    this->pixmap = pixmap;

}

/*!

    \fn HbPixmapIconProcessor::createMultiPieceIconData()

    \a multiPieceIconInfo

    \a multiPieceIconParams

 */

bool HbPixmapIconProcessor::createMultiPieceIconData(const QVector<HbSharedIconInfo> &multiPieceIconInfo,

        HbMultiIconParams &multiPieceIconParams)

{

    QPixmap finalPixmap((int)multiPieceIconParams.size.width(), (int)multiPieceIconParams.size.height());

    finalPixmap.fill(Qt::transparent);

    QPainter painter;

    painter.begin(&finalPixmap);

    for (int i = 0; i < multiPieceIconParams.multiPartIconList.count(); i++) {

#if defined (HB_NVG_CS_ICON)

        if ((multiPieceIconInfo[i].type != INVALID_FORMAT) && multiPieceIconInfo[i].type == NVG) {

                GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory);

                const QByteArray nvgData  = QByteArray::fromRawData((char*)manager->base() + multiPieceIconInfo[i].nvgData.offset,

                        multiPieceIconInfo[i].nvgData.dataSize);

                QSize contentSize = QSize(multiPieceIconInfo[i].nvgData.width, multiPieceIconInfo[i].nvgData.height);

                } else {

                    // consolidated pixmap creation falied.

                    painter.end();

                    return false;

            } else {

#endif

            if ((multiPieceIconInfo[i].type != INVALID_FORMAT) && multiPieceIconInfo[i].type == OTHER_SUPPORTED_FORMATS) {

                GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory);

                QImage image((const uchar*)

                         ((char *)manager->base() + multiPieceIconInfo[i].pixmapData.offset),

                         multiPieceIconParams.multiPartIconData.pixmapSizes[i].height(),

                         multiPieceIconInfo[i].pixmapData.format);

                painter.drawPixmap(multiPieceIconParams.multiPartIconData.targets[i].topLeft(), pixmap, pixmap.rect());

            }

#if defined (HB_NVG_CS_ICON)

        }

#endif

    }

    painter.end();

    if (multiPieceIconParams.mirrored) {

        QTransform t;

        t.scale(-1, 1);

        finalPixmap = finalPixmap.transformed(t);

    }

    setPixmap(finalPixmap);

    return true;

}