src/hbcore/ovgeffects/hbvgshadoweffect.cpp
changeset 0 16d8024aca5e
child 5 627c4a0fd0e7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/ovgeffects/hbvgshadoweffect.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** 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 "hbvgshadoweffect_p.h"
+#include "hbvgoutlineeffect_p_p.h"
+#include <QPainter>
+
+/*!
+ * \class HbVgShadowEffect
+ *
+ * \brief OpenVG-based dropshadow filter effect.
+ *
+ * \internal
+ */
+
+HbVgShadowEffect::HbVgShadowEffect(QObject *parent)
+    : HbVgOutlineEffect(parent)
+{
+}
+
+HbVgShadowEffect::HbVgShadowEffect(HbVgOutlineEffectPrivate &dd, QObject *parent)
+    : HbVgOutlineEffect(dd, parent)
+{
+}
+
+HbVgShadowEffect::~HbVgShadowEffect()
+{
+}
+
+void HbVgShadowEffect::performEffect(QPainter *painter,
+                                   const QPointF &offset,
+                                   const QVariant &vgImage,
+                                   const QSize &vgImageSize)
+{
+#ifdef HB_EFFECTS_OPENVG
+    Q_D(HbVgOutlineEffect);
+    QPixmap outlinePm = makeOutline(vgImage, vgImageSize);
+    // Draw the shadow. Note that this paints also outside of our bounding
+    // rectangle but all those pixels (that fall outside of our rect) are
+    // transparent. This should be more effective than trying to get the shadow
+    // translated already in outlinePm.
+    painter->drawPixmap(offset + d->mapOffset(d->offset), outlinePm);
+    // Draw the source.
+    painter->drawPixmap(offset, d->srcPixmap);
+#else
+    Q_UNUSED(painter);
+    Q_UNUSED(offset);
+    Q_UNUSED(vgImage);
+    Q_UNUSED(vgImageSize);
+#endif
+}