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

**

** 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 HbCore 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 <hbglobal.h>

#ifdef HB_FILTER_EFFECTS

#include "hbeffectblur_p.h"

#include "hbeffectgroup_p.h"

#include "hbeffectdef_p.h"

#include "hbvgchainedeffect_p.h"

#include "hbvgblureffect_p.h"

#include "hbvggloweffect_p.h"

#include "hbeffectfilter_p.h"

#include <QGraphicsItem>

#include <QtDebug>

// -----------------------------------------------------------------------------

// HbEffectBlur

HbEffectBlur::HbEffectBlur(

    const HbEffectFxmlFilterData &data,

    QGraphicsItem *item,

    HbEffectGroup *group) :

        HbEffectFilter(0, item, group),

        mAnimationO(0),

        mAnimationX(0),

        mAnimationY(0),

        mVgBlur(0),

        mType(Blur)

{

    // If it is a glow filter, change effect type

    if (data.type() == HB_EFFECT_NAME_GLOW) {

        mType = Glow;

    }

    // Default values of if something is not passed in FXML

    qreal opacity_start = 1;

    qreal opacity_end = 1;

    qreal blur_x_start = 1;

    qreal blur_x_end = 1;

    qreal blur_y_start = 1;

    qreal blur_y_end = 1;

    QList<HbEffectFxmlParamData> params = data.paramData();

    // Handle FXML parameters

    Q_FOREACH(const HbEffectFxmlParamData &param, params) {

        if (param.name() == FXML_KEYWORD_BLUR_OPACITY) {

            mAnimationO = createAnimation(param, opacity_start, opacity_end, group);

        }

        else if (param.name() == FXML_KEYWORD_BLUR_ORIGIN_X) {

            mAnimationX = createAnimation(param, blur_x_start, blur_x_end, group);

        }

        else if (param.name() == FXML_KEYWORD_BLUR_ORIGIN_Y) {

            mAnimationY = createAnimation(param, blur_y_start, blur_y_end, group);

        }

    }

    // Additive blending mode changes blur effect to glow effect.

    if (data.blending() == FXML_BLENDING_ADDITIVE) {

        mType = HbEffectBlur::Glow;

    }

    // Create VG effect if there were effect parameters defined

    if (mEffectDefined) {

        // Add blur effect to the filter effect chain in the effect group

        HbVgChainedEffect *chain = HbEffectAbstract::group()->vgEffect();

        if (mType == Blur) {

            mVgBlur = new HbVgBlurEffect();

        }

        else {

            mVgBlur = new HbVgGlowEffect();

        }

        mVgBlur->setCaching(true);

        chain->add(mVgBlur);

        // Set initial radius for the blur effect

        mVgBlur->setRadius(blur_x_start, blur_y_start);

        mVgBlur->setOpacity(opacity_start);

    }

}

HbEffectBlur::~HbEffectBlur()

{

}

QString HbEffectBlur::name() const

{

    return mType == Blur ? HB_EFFECT_NAME_BLUR : HB_EFFECT_NAME_GLOW;

}

void HbEffectBlur::updateFilterEffect()

{

    // Only update the graphics effect if the effect is running

    if (group()->isRunning()) {

        QPointF blurRadius = mVgBlur->radius();

        if (mAnimationX) {

            blurRadius.setX(qVariantValue<qreal>(mAnimationX->currentValue()));

        }

        if (mAnimationY) {

            blurRadius.setY(qVariantValue<qreal>(mAnimationY->currentValue()));

        }

        mVgBlur->setRadius(blurRadius);

        if (mAnimationO) {

            mVgBlur->setOpacity(qVariantValue<qreal>(mAnimationO->currentValue()));

        }

#if 0 // Enable for debugging parameters given to the openVG filter

        QString opacityString;

        if (mAnimationO) {

            opacityString.setNum(qVariantValue<qreal>(mAnimationO->currentValue()));

        }

        else {

            opacityString = "N/A";

        }

        qDebug() << "HbEffectBlur: Updating filter with radius = (" << blurRadius.x() << "," << blurRadius.y()

                 << ") - Opacity =" << opacityString;

#endif

    }

}

#endif