src/hbcore/effects/hbeffectblur.cpp
changeset 0 16d8024aca5e
child 1 f7ac710697a9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/effects/hbeffectblur.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** 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