diff -r 000000000000 -r 1918ee327afb examples/effects/customshader/blurpicker.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/effects/customshader/blurpicker.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "blurpicker.h"
+
+#include <QtGui>
+
+#include "blureffect.h"
+#include "customshadereffect.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0)
+{
+    setBackgroundBrush(QPixmap(":/images/background.jpg"));
+    setScene(&m_scene);
+
+    setupScene();
+    updateIconPositions();
+
+    connect(&m_timeLine, SIGNAL(valueChanged(qreal)), SLOT(updateIconPositions()));
+    m_timeLine.setDuration(400);
+
+    setRenderHint(QPainter::Antialiasing, true);
+    setFrameStyle(QFrame::NoFrame);
+}
+
+void BlurPicker::updateIconPositions()
+{
+    m_index = m_timeLine.currentFrame() / 1000.0;
+
+    qreal baseline = 0;
+    for (int i = 0; i < m_icons.count(); ++i) {
+        QGraphicsItem *icon = m_icons[i];
+        qreal a = ((i + m_index) * 2 * M_PI) / m_icons.count();
+        qreal xs = 170 * sin(a);
+        qreal ys = 100 * cos(a);
+        QPointF pos(xs, ys);
+        pos = QTransform().rotate(-20).map(pos);
+        pos -= QPointF(40, 40);
+        icon->setPos(pos);
+        baseline = qMax(baseline, ys);
+        if (i != 3)
+            static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline);
+    }
+
+    m_scene.update();
+}
+
+void BlurPicker::setupScene()
+{
+    m_scene.setSceneRect(-200, -120, 400, 240);
+
+    QStringList names;
+    names << ":/images/accessories-calculator.png";
+    names << ":/images/accessories-text-editor.png";
+    names << ":/images/help-browser.png";
+    names << ":/images/internet-group-chat.png";
+    names << ":/images/internet-mail.png";
+    names << ":/images/internet-web-browser.png";
+    names << ":/images/office-calendar.png";
+    names << ":/images/system-users.png";
+
+    for (int i = 0; i < names.count(); i++) {
+        QPixmap pixmap(names[i]);
+        QGraphicsPixmapItem *icon = m_scene.addPixmap(pixmap);
+        icon->setZValue(1);
+        if (i == 3)
+            icon->setGraphicsEffect(new CustomShaderEffect());
+        else
+            icon->setGraphicsEffect(new BlurEffect(icon));
+        m_icons << icon;
+    }
+
+    QGraphicsPixmapItem *bg = m_scene.addPixmap(QPixmap(":/images/background.jpg"));
+    bg->setZValue(0);
+    bg->setPos(-200, -150);
+}
+
+void BlurPicker::keyPressEvent(QKeyEvent *event)
+{
+    if (event->key() == Qt::Key_Left) {
+        if (m_timeLine.state() == QTimeLine::NotRunning) {
+            m_timeLine.setFrameRange(m_index * 1000, m_index * 1000 - 1000);
+            m_timeLine.start();
+            event->accept();
+        }
+    }
+
+    if (event->key() == Qt::Key_Right) {
+        if (m_timeLine.state() == QTimeLine::NotRunning) {
+            m_timeLine.setFrameRange(m_index * 1000, m_index * 1000 + 1000);
+            m_timeLine.start();
+            event->accept();
+        }
+    }
+}