src/hbcore/effects/hbeffectdropshadow.cpp
changeset 0 16d8024aca5e
child 5 627c4a0fd0e7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/effects/hbeffectdropshadow.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,176 @@
+/****************************************************************************
+**
+** 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 "hbeffectgroup_p.h"
+#include "hbeffectdef_p.h"
+#include "hbeffectdropshadow_p.h"
+#include "hbeffectfilter_p.h"
+#include "hbvgchainedeffect_p.h"
+#include "hbvgshadoweffect_p.h"
+#include "hbvgoutlineeffect_p.h"
+#include <QGraphicsItem>
+#include <QtDebug>
+
+// -----------------------------------------------------------------------------
+
+// HbEffectDropShadow
+
+HbEffectDropShadow::HbEffectDropShadow(
+    const HbEffectFxmlFilterData &data,
+    QGraphicsItem *item,
+    HbEffectGroup *group) :
+        HbEffectFilter(0, item, group),
+        mAnimationO(0),
+        mAnimationS(0),
+        mAnimationOutlineX(0),
+        mAnimationOutlineY(0),
+        mAnimationOffsetX(0),
+        mAnimationOffsetY(0),
+        mAnimationC(0),
+        mVgOutline(0),
+        mType(HbEffectDropShadow::outline)
+{
+    // Default values from FXML spec
+    qreal opacity_start = 1;
+    qreal opacity_end = 1;
+
+    qreal steepness_start = 20.0f;
+    qreal steepness_end = 20.0f;
+
+    qreal outline_x_start = 1.0f;
+    qreal outline_x_end = 1.0f;
+    qreal outline_y_start = 1.0f;
+    qreal outline_y_end = 1.0f;
+
+    qreal offset_x_start = 0.0f;
+    qreal offset_x_end = 0.0f;
+    qreal offset_y_start = 0.0f;
+    qreal offset_y_end = 0.0f;
+
+    QColor color_start(0, 0, 0);
+    QColor color_end(0, 0, 0);
+
+    QList<HbEffectFxmlParamData> params = data.paramData();
+
+    // Handle FXML parameters
+    Q_FOREACH(const HbEffectFxmlParamData &param, params) {
+        if (param.name() == FXML_KEYWORD_DROP_SHADOW_OPACITY) {
+            mAnimationO = createAnimation(param, opacity_start, opacity_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_COLOR) {
+            mAnimationC = createAnimation(param, color_start, color_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OFFSET_X) {
+            mAnimationOffsetX = createAnimation(param, offset_x_start, offset_x_end, group);
+            // If offset parameters are used, it is a drop shadow effect.
+            mType = dropShadow;
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OFFSET_Y) {
+            mAnimationOffsetY = createAnimation(param, offset_y_start, offset_y_end, group);
+            // If offset parameters are used, it is a drop shadow effect.
+            mType = dropShadow;
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_STEEPNESS) {
+            mAnimationS = createAnimation(param, steepness_start, steepness_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OUTLINE_X) {
+            mAnimationOutlineX = createAnimation(param, outline_x_start, outline_x_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_DROP_SHADOW_OUTLINE_Y) {
+            mAnimationOutlineY = createAnimation(param, outline_y_start, outline_y_end, group);
+        }
+    }
+
+    // Create VG effect if there were effect parameters defined
+    if (mEffectDefined) {
+        // Add effect to the filter effect chain in the effect group
+        HbVgChainedEffect *chain = HbEffectAbstract::group()->vgEffect();
+        
+        if (mType == dropShadow) {
+            mVgOutline = new HbVgShadowEffect();
+        } else {
+            mVgOutline = new HbVgOutlineEffect();
+        }
+
+        mVgOutline->setCaching(true);
+
+        chain->add(mVgOutline);
+
+        // Set initial values for the effect
+        mVgOutline->setOpacity(opacity_start);
+        mVgOutline->setOutline(outline_x_start, outline_y_start);
+        mVgOutline->setColor(color_start);
+        mVgOutline->setSteepness(steepness_start);
+        mVgOutline->setOffset(offset_x_start, offset_y_start);
+    }
+}
+
+HbEffectDropShadow::~HbEffectDropShadow()
+{
+}
+
+QString HbEffectDropShadow::name() const
+{
+    return mType == dropShadow ? HB_EFFECT_NAME_DROP_SHADOW : HB_EFFECT_NAME_OUTLINE;
+}
+
+void HbEffectDropShadow::updateFilterEffect()
+{
+    // Only update the graphics effect if the effect is running
+    if (group()->isRunning()) {
+        QPointF outline = mVgOutline->outline();
+        QPointF offset = mVgOutline->offset();
+
+        if (mAnimationOutlineX) {
+            outline.setX(qVariantValue<qreal>(mAnimationOutlineX->currentValue()));
+        }
+        if (mAnimationOutlineY) {
+            outline.setY(qVariantValue<qreal>(mAnimationOutlineY->currentValue()));
+        }
+        if (mAnimationOffsetX) {
+            offset.setX(qVariantValue<qreal>(mAnimationOffsetX->currentValue()));
+        }
+        if (mAnimationOffsetY) {
+            offset.setY(qVariantValue<qreal>(mAnimationOffsetY->currentValue()));
+        }
+
+        mVgOutline->setOutline(outline);
+        mVgOutline->setOffset(offset);
+
+        if (mAnimationS) {
+            mVgOutline->setSteepness(qVariantValue<qreal>(mAnimationS->currentValue()));
+        }
+        if (mAnimationC) {
+            mVgOutline->setColor(qVariantValue<QColor>(mAnimationC->currentValue()));            
+        }
+        if (mAnimationO) {
+            mVgOutline->setOpacity(qVariantValue<qreal>(mAnimationO->currentValue()));            
+        }
+    }
+}
+
+#endif