/*!

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Widget to display contact image.

*               Displays default avatar, when image is not set.

*

*/

#include <QPainter>

#include <QGraphicsSceneResizeEvent>

#include <QDebug>

#include <hbstyle.h>

#include <hbiconitem.h>

#include <hbstyleloader.h>

#include <hbdeviceprofile.h>

#include "bubbleimagemanager.h"

#include "bubbleimagewidget.h"

static const qreal BubbbleImageRounding = 1.5; // units

BubbleImageWidget::BubbleImageWidget(

    BubbleImageManager& imageManager,

    QGraphicsItem* parent)

    : HbWidget(parent),

      mImageManager(imageManager),

      mDefaultAvatar(0),

      mKeepSquareShape(false)

{

    setFlag(QGraphicsItem::ItemHasNoContents, false);

    // create avatar

    mDefaultAvatar = new HbIconItem(this);

    style()->setItemName( mDefaultAvatar, "default_avatar" );

    mDefaultAvatar->setAspectRatioMode(Qt::KeepAspectRatioByExpanding);

    mDefaultAvatar->setAlignment(Qt::AlignCenter);

    connect(&mImageManager, SIGNAL(pixmapReady(QString)),

            this, SLOT(imageLoaded(QString)));

    HbStyleLoader::registerFilePath(

        QLatin1String(":/bubbleimagewidget.css"));

    HbStyleLoader::registerFilePath(

        QLatin1String(":/bubbleimagewidget.widgetml"));

}

BubbleImageWidget::~BubbleImageWidget()

{

}

void BubbleImageWidget::setImageName(const QString& name)

{

    mImageName = name;

    if (!mImageName.isEmpty()) {

        mDefaultAvatar->setVisible(false);

        mDefaultAvatar->setIcon(HbIcon());

        mImageManager.loadImage(mImageName);

    } else {

        mDefaultAvatar->setIconName(QLatin1String("qtg_large_avatar"));

        mDefaultAvatar->setVisible(true);

    }

}

QString BubbleImageWidget::imageName() const

{

    if (!mImageName.isEmpty()) {

        return mImageName;

    } else {

        return mDefaultAvatar->iconName();

    }

}

void BubbleImageWidget::imageLoaded(QString imageFileName)

{

    if (imageFileName==mImageName) {

        update(); // does nothing if invisible

    }

}

void BubbleImageWidget::paint(

    QPainter* painter,

    const QStyleOptionGraphicsItem* option,

    QWidget* widget)

{

    Q_UNUSED(option);

    Q_UNUSED(widget);

    if (mImageName.isEmpty())

        return;

    const QPixmap* pixmap =

        mImageManager.pixmap(mImageName);

    if (pixmap) {

        painter->save();

        // up or downscales images to fill image area

        QSize imageSize(pixmap->size());

        QSize sourceSize(rect().size().toSize());

        sourceSize.scale(imageSize,Qt::KeepAspectRatio);

        QRect sourceRect(QPoint(0,0),sourceSize);

        int xOff = (imageSize.width() - sourceSize.width())/2;

        int yOff = (imageSize.height() - sourceSize.height())/2;

        sourceRect.moveLeft(xOff);

        sourceRect.moveTop(yOff);

        // qDebug() << "imageSize:" << imageSize;

        // qDebug() << "sourceRect:" << sourceRect;

        painter->setRenderHint(QPainter::SmoothPixmapTransform);

        painter->setRenderHint(QPainter::Antialiasing);

        QPainterPath clip;

        qreal rounding = BubbbleImageRounding *

                         HbDeviceProfile::profile(this).unitValue();

        painter->setClipPath(clip);

#ifdef __WINS__

        // sourceRect crashes emulator, RC ou1cimx1#320113

        painter->drawPixmap(rect().toRect(),*pixmap);

#else        

        painter->drawPixmap(rect().toRect(),*pixmap,sourceRect);

#endif        

        painter->restore();

    }

}

QSizeF BubbleImageWidget::sizeHint(

    Qt::SizeHint which,

    const QSizeF & constraint) const

{

    Q_UNUSED(which);

    Q_UNUSED(constraint);

    if (mKeepSquareShape && which==Qt::PreferredSize ) {

        QSizeF hint(size().height(), size().height());

        if (hint.isNull()) {

            hint = QSizeF(100,100);

        }

        // qDebug() << "size hint: " << hint;

        return hint;

    } else {

        return HbWidget::sizeHint(which,constraint);

    }

}

void BubbleImageWidget::resizeEvent(QGraphicsSceneResizeEvent * event)

{

    // qDebug() << "size:" << event->newSize();

    if ( event->newSize().height()!= event->oldSize().height() &&

         event->newSize().height() > 1 ) {

        updateGeometry();

    }

    HbWidget::resizeEvent(event);

}

bool BubbleImageWidget::keepSquareShape() const

{

    return mKeepSquareShape;

}

void BubbleImageWidget::setKeepSquareShape(bool keepSquare)

{

    mKeepSquareShape = keepSquare;

    if (mKeepSquareShape) {

        setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);

    } else {

        setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    }

    updateGeometry();

}

void BubbleImageWidget::displayEmergencyCallIcon()

{

    // this method overrides default avatar set in setImageName()

    if (mImageName.isEmpty()) {

        mDefaultAvatar->setIconName(

            QLatin1String("qtg_large_emergency_call"));

    }

}