src/hbcore/effects/hbeffectdropshadow.cpp
author hgs
Mon, 18 Oct 2010 18:23:13 +0300
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permissions -rw-r--r--
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/****************************************************************************
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**
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (developer.feedback@nokia.com)
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**
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** This file is part of the HbCore module of the UI Extensions for Mobile.
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this file.
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** Please review the following information to ensure the GNU Lesser General
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** Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at developer.feedback@nokia.com.
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**
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****************************************************************************/
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#include <hbglobal.h>
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#ifdef HB_FILTER_EFFECTS
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#include "hbeffectgroup_p.h"
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#include "hbeffectdef_p.h"
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#include "hbeffectdropshadow_p.h" //krazy:exclude=includes
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#include "hbeffectfilter_p.h"
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#include "hbvgchainedeffect_p.h"
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#include "hbvgshadoweffect_p.h"
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#include "hbvgoutlineeffect_p.h"
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#include <QGraphicsItem>
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#include <QtDebug>
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// -----------------------------------------------------------------------------
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// HbEffectDropShadow
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HbEffectDropShadow::HbEffectDropShadow(
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    const HbEffectFxmlFilterData &data,
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    QGraphicsItem *item,
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    HbEffectGroup *group) :
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    HbEffectFilter(0, item, group),
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    mAnimationO(0),
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    mAnimationS(0),
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    mAnimationOutlineX(0),
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    mAnimationOutlineY(0),
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    mAnimationOffsetX(0),
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    mAnimationOffsetY(0),
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    mAnimationC(0),
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    mVgOutline(0),
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    mType(HbEffectDropShadow::outline)
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{
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    // Default values from FXML spec
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    qreal opacity_start = 1;
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    qreal opacity_end = 1;
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    qreal steepness_start = 20.0f;
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    qreal steepness_end = 20.0f;
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    qreal outline_x_start = 1.0f;
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    qreal outline_x_end = 1.0f;
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    qreal outline_y_start = 1.0f;
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    qreal outline_y_end = 1.0f;
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    qreal offset_x_start = 0.0f;
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    qreal offset_x_end = 0.0f;
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    qreal offset_y_start = 0.0f;
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    qreal offset_y_end = 0.0f;
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    QColor color_start(0, 0, 0);
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    QColor color_end(0, 0, 0);
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    QList<HbEffectFxmlParamData> params = data.paramData();
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    // Handle FXML parameters
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    Q_FOREACH(const HbEffectFxmlParamData & param, params) {
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        if (param.name() == FXML_KEYWORD_DROP_SHADOW_OPACITY) {
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            mAnimationO = createAnimation(param, opacity_start, opacity_end, group);
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_COLOR) {
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            mAnimationC = createAnimation(param, color_start, color_end, group);
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OFFSET_X) {
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            mAnimationOffsetX = createAnimation(param, offset_x_start, offset_x_end, group);
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            // If offset parameters are used, it is a drop shadow effect.
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            mType = dropShadow;
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OFFSET_Y) {
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            mAnimationOffsetY = createAnimation(param, offset_y_start, offset_y_end, group);
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            // If offset parameters are used, it is a drop shadow effect.
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            mType = dropShadow;
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_STEEPNESS) {
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            mAnimationS = createAnimation(param, steepness_start, steepness_end, group);
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OUTLINE_X) {
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            mAnimationOutlineX = createAnimation(param, outline_x_start, outline_x_end, group);
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        } else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OUTLINE_Y) {
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            mAnimationOutlineY = createAnimation(param, outline_y_start, outline_y_end, group);
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        }
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    }
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    // Create VG effect if there were effect parameters defined
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    if (mEffectDefined) {
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        // Add effect to the filter effect chain in the effect group
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        HbVgChainedEffect *chain = HbEffectAbstract::group()->vgEffect();
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        if (mType == dropShadow) {
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            mVgOutline = new HbVgShadowEffect();
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        } else {
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            mVgOutline = new HbVgOutlineEffect();
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        }
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        mVgOutline->setCaching(true);
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        chain->add(mVgOutline);
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        // Set initial values for the effect
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        mVgOutline->setOpacity(opacity_start);
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        mVgOutline->setOutline(outline_x_start, outline_y_start);
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        mVgOutline->setColor(color_start);
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        mVgOutline->setSteepness(steepness_start);
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        mVgOutline->setOffset(offset_x_start, offset_y_start);
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    }
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}
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HbEffectDropShadow::~HbEffectDropShadow()
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{
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}
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QString HbEffectDropShadow::name() const
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{
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    return mType == dropShadow ? HB_EFFECT_NAME_DROP_SHADOW : HB_EFFECT_NAME_OUTLINE;
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}
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void HbEffectDropShadow::updateFilterEffect()
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{
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    // Only update the graphics effect if the effect is running
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    if (mVgOutline && group()->isRunning()) {
0
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        QPointF outline = mVgOutline->outline();
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        QPointF offset = mVgOutline->offset();
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        if (mAnimationOutlineX) {
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            outline.setX(qVariantValue<qreal>(mAnimationOutlineX->currentValue()));
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        }
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        if (mAnimationOutlineY) {
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            outline.setY(qVariantValue<qreal>(mAnimationOutlineY->currentValue()));
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        }
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        if (mAnimationOffsetX) {
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            offset.setX(qVariantValue<qreal>(mAnimationOffsetX->currentValue()));
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        }
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        if (mAnimationOffsetY) {
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            offset.setY(qVariantValue<qreal>(mAnimationOffsetY->currentValue()));
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        }
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        mVgOutline->setOutline(outline);
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        mVgOutline->setOffset(offset);
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        if (mAnimationS) {
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            mVgOutline->setSteepness(qVariantValue<qreal>(mAnimationS->currentValue()));
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        }
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        if (mAnimationC) {
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            mVgOutline->setColor(qVariantValue<QColor>(mAnimationC->currentValue()));
0
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        }
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        if (mAnimationO) {
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            mVgOutline->setOpacity(qVariantValue<qreal>(mAnimationO->currentValue()));
0
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        }
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    }
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}
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#endif