src/hbcore/effects/hbeffectbc.cpp
changeset 0 16d8024aca5e
child 5 627c4a0fd0e7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/effects/hbeffectbc.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** 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 "hbeffectbc_p.h"
+#include "hbeffectgroup_p.h"
+#include "hbeffectdef_p.h"
+#include "hbvgchainedeffect_p.h"
+#include "hbvgbceffect_p.h"
+#include "hbeffectfilter_p.h"
+#include <QGraphicsItem>
+#include <QtDebug>
+
+// -----------------------------------------------------------------------------
+
+// HbEffectBc
+
+HbEffectBc::HbEffectBc(
+    const HbEffectFxmlFilterData &data,
+    QGraphicsItem *item,
+    HbEffectGroup *group) :
+        HbEffectFilter(0, item, group),
+        mAnimationO(0),
+        mAnimationB(0),
+        mAnimationC(0),
+        mVgBc(0)
+{
+    // Default values of if something is not passed in FXML
+    qreal opacity_start = 1;
+    qreal opacity_end = 1;
+    qreal brightness_start = 0;
+    qreal brightness_end = 0;
+    qreal contrast_start = 1;
+    qreal contrast_end = 1;
+
+    QList<HbEffectFxmlParamData> params = data.paramData();
+
+    // Handle FXML parameters
+    Q_FOREACH(const HbEffectFxmlParamData &param, params) {
+        if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_OPACITY) {
+            mAnimationO = createAnimation(param, opacity_start, opacity_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_BRIGHTNESS) {
+            mAnimationB = createAnimation(param, brightness_start, brightness_end, group);
+        }
+        else if (param.name() == FXML_KEYWORD_BRIGHTNESS_CONTRAST_CONTRAST) {
+            mAnimationC = createAnimation(param, contrast_start, contrast_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();
+        
+        mVgBc = new HbVgBcEffect();
+        mVgBc->setCaching(true);
+        
+        chain->add(mVgBc);
+
+        // Set initial values for the effect
+        mVgBc->setOpacity(opacity_start);
+        mVgBc->setBrightness(brightness_start);
+        mVgBc->setContrast(contrast_start);
+    }
+}
+
+HbEffectBc::~HbEffectBc()
+{
+}
+
+QString HbEffectBc::name() const
+{
+    return HB_EFFECT_NAME_BRIGHTNESS_CONTRAST;
+}
+
+void HbEffectBc::updateFilterEffect()
+{
+    // Only update the graphics effect if the effect is running
+    if (group()->isRunning()) {
+        if (mAnimationO) {
+            mVgBc->setOpacity(qVariantValue<qreal>(mAnimationO->currentValue()));
+        }
+        if (mAnimationB) {
+            mVgBc->setBrightness(qVariantValue<qreal>(mAnimationB->currentValue()));
+        }
+        if (mAnimationC) {
+            mVgBc->setContrast(qVariantValue<qreal>(mAnimationC->currentValue()));
+        }
+    }
+}
+
+#endif