1 /****************************************************************************

     2 **

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

     4 ** All rights reserved.

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

     6 **

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

     8 **

     9 ** GNU Lesser General Public License Usage

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

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

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

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

    14 ** Public License version 2.1 requirements will be met:

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

    16 **

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

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

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

    20 **

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

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

    23 **

    24 ****************************************************************************/

    25 #include <hbglobal.h>

    26 #ifdef HB_FILTER_EFFECTS

    27 

    28 #include "hbeffectbc_p.h"

    29 #include "hbeffectgroup_p.h"

    30 #include "hbeffectdef_p.h"

    31 #include "hbvgchainedeffect_p.h"

    32 #include "hbvgbceffect_p.h"

    33 #include "hbeffectfilter_p.h"

    34 #include <QGraphicsItem>

    35 #include <QtDebug>

    36 

    37 // -----------------------------------------------------------------------------

    38 

    39 // HbEffectBc

    40 

    41 HbEffectBc::HbEffectBc(

    42     const HbEffectFxmlFilterData &data,

    43     QGraphicsItem *item,

    44     HbEffectGroup *group) :

    45         HbEffectFilter(0, item, group),

    46         mAnimationO(0),

    47         mAnimationB(0),

    48         mAnimationC(0),

    49         mVgBc(0)

    50 {

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

    52     qreal opacity_start = 1;

    53     qreal opacity_end = 1;

    54     qreal brightness_start = 0;

    55     qreal brightness_end = 0;

    56     qreal contrast_start = 1;

    57     qreal contrast_end = 1;

    58 

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

    60 

    61     // Handle FXML parameters

    62     Q_FOREACH(const HbEffectFxmlParamData &param, params) {

    63         if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_OPACITY) {

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

    65         }

    66         else if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_BRIGHTNESS) {

    67             mAnimationB = createAnimation(param, brightness_start, brightness_end, group);

    68         }

    69         else if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_CONTRAST) {

    70             mAnimationC = createAnimation(param, contrast_start, contrast_end, group);

    71         }

    72     }

    73 

    74     // Create VG effect if there were effect parameters defined

    75     if (mEffectDefined) {

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

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

    78         

    79         mVgBc = new HbVgBcEffect();

    80         mVgBc->setCaching(true);

    81         

    82         chain->add(mVgBc);

    83 

    84         // Set initial values for the effect

    85         mVgBc->setOpacity(opacity_start);

    86         mVgBc->setBrightness(brightness_start);

    87         mVgBc->setContrast(contrast_start);

    88     }

    89 }

    90 

    91 HbEffectBc::~HbEffectBc()

    92 {

    93 }

    94 

    95 QString HbEffectBc::name() const

    96 {

    97     return HB_EFFECT_NAME_BRIGHTNESS_CONTRAST;

    98 }

    99 

   100 void HbEffectBc::updateFilterEffect()

   101 {

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

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

   104         if (mAnimationO) {

   105             mVgBc->setOpacity(qVariantValue<qreal>(mAnimationO->currentValue()));

   106         }

   107         if (mAnimationB) {

   108             mVgBc->setBrightness(qVariantValue<qreal>(mAnimationB->currentValue()));

   109         }

   110         if (mAnimationC) {

   111             mVgBc->setContrast(qVariantValue<qreal>(mAnimationC->currentValue()));

   112         }

   113     }

   114 }

   115 

   116 #endif