--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/ovgeffects/hbvgoutlineeffect.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,202 @@
+/****************************************************************************
+**
+** 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 "hbvgoutlineeffect_p.h"
+#include "hbvgoutlineeffect_p_p.h"
+#include <QPainter>
+
+/*!
+ * \class HbVgOutlineEffect
+ *
+ * \brief OpenVG-based outline filter effect.
+ *
+ * \internal
+ */
+
+HbVgOutlineEffectPrivate::HbVgOutlineEffectPrivate()
+    : outline(1, 1), color(Qt::black), steepness(20), offset(0, 0)
+{
+}
+
+HbVgOutlineEffect::HbVgOutlineEffect(QObject *parent)
+    : HbVgEffect(*new HbVgOutlineEffectPrivate, parent)
+{
+}
+
+HbVgOutlineEffect::HbVgOutlineEffect(HbVgOutlineEffectPrivate &dd, QObject *parent)
+    : HbVgEffect(dd, parent)
+{
+}
+
+HbVgOutlineEffect::~HbVgOutlineEffect()
+{
+}
+
+QPointF HbVgOutlineEffect::outline() const
+{
+    Q_D(const HbVgOutlineEffect);
+    return d->outline;
+}
+
+void HbVgOutlineEffect::setOutline(const QPointF &outline)
+{
+    Q_D(HbVgOutlineEffect);
+    if (d->outline == outline)
+        return;
+    d->outline = outline;
+    updateEffectBoundingRect();
+    emit outlineChanged(outline);
+}
+
+QColor HbVgOutlineEffect::color() const
+{
+    Q_D(const HbVgOutlineEffect);
+    return d->color;
+}
+
+void HbVgOutlineEffect::setColor(const QColor &color)
+{
+    Q_D(HbVgOutlineEffect);
+    if (d->color == color)
+        return;
+    d->color = color;
+    updateEffect();
+    emit colorChanged(color);
+}
+
+qreal HbVgOutlineEffect::steepness() const
+{
+    Q_D(const HbVgOutlineEffect);
+    return d->steepness;
+}
+
+void HbVgOutlineEffect::setSteepness(qreal steepness)
+{
+    Q_D(HbVgOutlineEffect);
+    if (d->steepness == steepness)
+        return;
+    d->steepness = steepness;
+    updateEffect();
+    emit steepnessChanged(steepness);
+}
+
+QPointF HbVgOutlineEffect::offset() const
+{
+    Q_D(const HbVgOutlineEffect);
+    return d->offset;
+}
+
+void HbVgOutlineEffect::setOffset(const QPointF &offset)
+{
+    Q_D(HbVgOutlineEffect);
+    if (d->offset == offset)
+        return;
+    d->offset = offset;
+    updateEffectBoundingRect();
+    emit offsetChanged(offset);
+}
+
+QRectF HbVgOutlineEffect::boundingRectFor(const QRectF &rect) const
+{
+    Q_D(const HbVgOutlineEffect);
+    QSizeF mappedOutline = d->mapSize(QSizeF(d->outline.x(), d->outline.y()));
+    QPointF mappedOffset = d->mapOffset(d->offset);
+
+    qreal ox1 = rect.left() - mappedOutline.width() + mappedOffset.x();
+    qreal oy1 = rect.top() - mappedOutline.height() + mappedOffset.y();
+    qreal ox2 = rect.right() + mappedOutline.width() + mappedOffset.x();
+    qreal oy2 = rect.bottom() + mappedOutline.height() + mappedOffset.y();
+
+    qreal x1 = qMin(rect.left(), ox1);
+    qreal y1 = qMin(rect.top(), oy1);
+    qreal x2 = qMax(rect.right(), ox2);
+    qreal y2 = qMax(rect.bottom(), oy2);
+
+    return QRectF(x1, y1, x2 - x1 + 1, y2 - y1 + 1);
+}
+
+QPixmap HbVgOutlineEffect::makeOutline(const QVariant &vgImage, const QSize &vgImageSize)
+{
+#ifdef HB_EFFECTS_OPENVG
+    QPixmap cachedPm = cached(vgImageSize);
+    if (!cachedPm.isNull())
+        return cachedPm;
+
+    Q_D(HbVgOutlineEffect);
+    VGImage srcImage = vgImage.value<VGImage>();
+    VGImage dstImage = d->ensurePixmap(&d->dstPixmap, vgImageSize);
+
+    if (d->paramsChanged) {
+        VGubyte stpc = (VGubyte) clamp(d->steepness, 0.0f, 32.0f);
+        VGubyte unnormalisedOpacity = (VGubyte) (clamp(d->opacity, 0.0f, 1.0f) * 255.0f);
+        for (int i = 0; i < 256; ++i) {
+            VGubyte alpha = (i*stpc > unnormalisedOpacity) ? unnormalisedOpacity : i*stpc;
+            d->lut[i] = 0x00000000
+                | (d->color.red() << 24)
+                | (d->color.green() << 16)
+                | (d->color.blue() << 8)
+                | alpha;
+        }
+    }
+
+    QSizeF mappedOutline = d->mapSize(QSizeF(d->outline.x(), d->outline.y()));
+    VGfloat outline_x = (VGfloat) clamp(mappedOutline.width(), HBVG_EPSILON, 16.0f);
+    VGfloat outline_y = (VGfloat) clamp(mappedOutline.height(), HBVG_EPSILON, 16.0f);
+    if (outline_x > HBVG_EPSILON && outline_y > HBVG_EPSILON) {
+        VGImage tmpImage = d->ensurePixmap(&d->tmpPixmap, vgImageSize);
+        vgGaussianBlur(tmpImage, srcImage, outline_x, outline_y, VG_TILE_PAD);
+        vgLookupSingle(dstImage, tmpImage, d->lut, VG_ALPHA, VG_TRUE, VG_FALSE);
+    } else {
+        vgCopyImage(dstImage, 0, 0, srcImage, 0, 0,
+                    vgImageSize.width(), vgImageSize.height(), VG_FALSE);
+    }
+
+    tryCache(d->dstPixmap);
+
+    return d->dstPixmap;
+#else
+    Q_UNUSED(vgImage);
+    Q_UNUSED(vgImageSize);
+    return QPixmap();
+#endif
+}
+
+void HbVgOutlineEffect::performEffect(QPainter *painter,
+                                      const QPointF &offset,
+                                      const QVariant &vgImage,
+                                      const QSize &vgImageSize)
+{
+#ifdef HB_EFFECTS_OPENVG
+    Q_D(HbVgOutlineEffect);
+    QPixmap outlinePm = makeOutline(vgImage, vgImageSize);
+    painter->drawPixmap(offset, outlinePm);
+    painter->drawPixmap(offset, d->srcPixmap);
+#else
+    Q_UNUSED(painter);
+    Q_UNUSED(offset);
+    Q_UNUSED(vgImage);
+    Q_UNUSED(vgImageSize);
+#endif
+}