Doc: drop Lighting Effect Example

Task-number: QTBUG-60635
Change-Id: If455a778ff6ebd53d8110b3dc25d8b9e27255bac
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
Reviewed-by: Nico Vertriest <nico.vertriest@qt.io>

5 files changed, 0 insertions, 299 deletions

diff --git a/examples/widgets/effects/effects.pro b/examples/widgets/effects/effects.pro
index 795e0508ac..05911979b9 100644
--- a/examples/widgets/effects/effects.pro
+++ b/examples/widgets/effects/effects.pro
@@ -2,5 +2,4 @@ TEMPLATE      = \
               subdirs
 SUBDIRS       = \
               blurpicker \
-              lighting \
               fademessage
diff --git a/examples/widgets/effects/lighting/lighting.cpp b/examples/widgets/effects/lighting/lighting.cpp
deleted file mode 100644
index 1ba7dd9ce7..0000000000
--- a/examples/widgets/effects/lighting/lighting.cpp
+++ /dev/null
@@ -1,145 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "lighting.h"
-#include <QtWidgets>
-#include <QtCore/qmath.h>
-
-Lighting::Lighting(QWidget *parent): QGraphicsView(parent), angle(0.0)
-{
-    setScene(&m_scene);
-
-    setupScene();
-
-    QTimer *timer = new QTimer(this);
-    connect(timer, SIGNAL(timeout()), SLOT(animate()));
-    timer->setInterval(30);
-    timer->start();
-
-    setRenderHint(QPainter::Antialiasing, true);
-    setFrameStyle(QFrame::NoFrame);
-}
-
-void Lighting::setupScene()
-{
-    m_scene.setSceneRect(-300, -200, 600, 460);
-
-    QLinearGradient linearGrad(QPointF(-100, -100), QPointF(100, 100));
-    linearGrad.setColorAt(0, QColor(255, 255, 255));
-    linearGrad.setColorAt(1, QColor(192, 192, 255));
-    setBackgroundBrush(linearGrad);
-
-    QRadialGradient radialGrad(30, 30, 30);
-    radialGrad.setColorAt(0, Qt::yellow);
-    radialGrad.setColorAt(0.2, Qt::yellow);
-    radialGrad.setColorAt(1, Qt::transparent);
-    QPixmap pixmap(60, 60);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::NoPen);
-    painter.setBrush(radialGrad);
-    painter.drawEllipse(0, 0, 60, 60);
-    painter.end();
-
-    m_lightSource = m_scene.addPixmap(pixmap);
-    m_lightSource->setZValue(2);
-
-    for (int i = -2; i < 3; ++i)
-        for (int j = -2; j < 3; ++j) {
-            QAbstractGraphicsShapeItem *item;
-            if ((i + j) & 1)
-                item = new QGraphicsEllipseItem(0, 0, 50, 50);
-            else
-                item = new QGraphicsRectItem(0, 0, 50, 50);
-
-            item->setPen(QPen(Qt::black, 1));
-            item->setBrush(QBrush(Qt::white));
-            QGraphicsDropShadowEffect *effect = new QGraphicsDropShadowEffect;
-            effect->setBlurRadius(8);
-            item->setGraphicsEffect(effect);
-            item->setZValue(1);
-            item->setPos(i * 80, j * 80);
-            m_scene.addItem(item);
-            m_items << item;
-        }
-
-
-}
-
-void Lighting::animate()
-{
-    angle += qDegreesToRadians(qreal(6));
-    qreal xs = 200 * qSin(angle) - 40 + 25;
-    qreal ys = 200 * qCos(angle) - 40 + 25;
-    m_lightSource->setPos(xs, ys);
-
-    for (int i = 0; i < m_items.size(); ++i) {
-        QGraphicsItem *item = m_items.at(i);
-        Q_ASSERT(item);
-        QGraphicsDropShadowEffect *effect = static_cast<QGraphicsDropShadowEffect *>(item->graphicsEffect());
-        Q_ASSERT(effect);
-
-        QPointF delta(item->x() - xs, item->y() - ys);
-        effect->setOffset(delta.toPoint() / 30);
-
-        qreal dx = delta.x();
-        qreal dy = delta.y();
-        qreal dd = qSqrt(dx * dx + dy * dy);
-        QColor color = effect->color();
-        color.setAlphaF(qBound(0.4, 1 - dd / 200.0, 0.7));
-        effect->setColor(color);
-    }
-
-    m_scene.update();
-}
-
-void Lighting::resizeEvent(QResizeEvent * /* event */)
-{
-}
diff --git a/examples/widgets/effects/lighting/lighting.h b/examples/widgets/effects/lighting/lighting.h
deleted file mode 100644
index 615824d46f..0000000000
--- a/examples/widgets/effects/lighting/lighting.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef LIGHTING_H
-#define LIGHTING_H
-
-#include <QGraphicsEffect>
-#include <QGraphicsView>
-
-class Lighting: public QGraphicsView
-{
-    Q_OBJECT
-
-public:
-    Lighting(QWidget *parent = 0);
-
-private slots:
-    void animate();
-
-private:
-    void setupScene();
-
-protected:
-    void resizeEvent(QResizeEvent *event) override;
-
-private:
-    qreal angle;
-    QGraphicsScene m_scene;
-    QGraphicsItem *m_lightSource;
-    QList<QGraphicsItem*> m_items;
-};
-
-#endif // LIGHTING_H
diff --git a/examples/widgets/effects/lighting/lighting.pro b/examples/widgets/effects/lighting/lighting.pro
deleted file mode 100644
index 0a3b397de5..0000000000
--- a/examples/widgets/effects/lighting/lighting.pro
+++ /dev/null
@@ -1,8 +0,0 @@
-QT += widgets
-
-SOURCES += main.cpp lighting.cpp
-HEADERS += lighting.h
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/widgets/effects/lighting
-INSTALLS += target
diff --git a/examples/widgets/effects/lighting/main.cpp b/examples/widgets/effects/lighting/main.cpp
deleted file mode 100644
index 22e55c0985..0000000000
--- a/examples/widgets/effects/lighting/main.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "lighting.h"
-#include <QApplication>
-
-int main(int argc, char **argv)
-{
-    QApplication app(argc, argv);
-
-    Lighting lighting;
-    lighting.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Lighting and Shadows"));
-
-    lighting.resize(640, 480);
-    lighting.show();
-
-    return app.exec();
-}