1 files changed, 133 insertions, 0 deletions
diff --git a/examples/quick/scenegraph/threadedanimation/spinner.cpp b/examples/quick/scenegraph/threadedanimation/spinner.cpp
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+++ b/examples/quick/scenegraph/threadedanimation/spinner.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "spinner.h"
+
+#include <QtQuick/QQuickWindow>
+#include <QtGui/QScreen>
+#include <QtQuick/QSGSimpleTextureNode>
+
+#include <QtGui/QConicalGradient>
+#include <QtGui/QPainter>
+
+class SpinnerNode : public QObject, public QSGTransformNode
+{
+    Q_OBJECT
+public:
+    SpinnerNode(QQuickWindow *window)
+        : m_rotation(0)
+        , m_spinning(false)
+        , m_window(window)
+    {
+        connect(window, SIGNAL(beforeRendering()), this, SLOT(maybeRotate()));
+        connect(window, SIGNAL(frameSwapped()), this, SLOT(maybeUpdate()));
+
+        QImage image(":/scenegraph/threadedanimation/spinner.png");
+        m_texture = window->createTextureFromImage(image);
+        QSGSimpleTextureNode *textureNode = new QSGSimpleTextureNode();
+        textureNode->setTexture(m_texture);
+        textureNode->setRect(0, 0, image.width(), image.height());
+        textureNode->setFiltering(QSGTexture::Linear);
+        appendChildNode(textureNode);
+    }
+
+    ~SpinnerNode() {
+        delete m_texture;
+    }
+
+    void setSpinning(bool spinning)
+    {
+        m_spinning = spinning;
+    }
+
+public slots:
+    void maybeRotate() {
+        if (m_spinning) {
+            m_rotation += (360 / m_window->screen()->refreshRate());
+            QMatrix4x4 matrix;
+            matrix.translate(32, 32);
+            matrix.rotate(m_rotation, 0, 0, 1);
+            matrix.translate(-32, -32);
+            setMatrix(matrix);
+        }
+    }
+
+    void maybeUpdate() {
+        if (m_spinning) {
+            m_window->update();
+        }
+    }
+
+private:
+    qreal m_rotation;
+    bool m_spinning;
+    QSGTexture *m_texture;
+    QQuickWindow *m_window;
+};
+
+Spinner::Spinner()
+    : m_spinning(false)
+{
+    setSize(QSize(64, 64));
+    setFlag(ItemHasContents);
+}
+
+void Spinner::setSpinning(bool spinning)
+{
+    if (spinning == m_spinning)
+        return;
+    m_spinning = spinning;
+    emit spinningChanged();
+    update();
+}
+
+QSGNode *Spinner::updatePaintNode(QSGNode *old, UpdatePaintNodeData *)
+{
+    SpinnerNode *n = static_cast<SpinnerNode *>(old);
+    if (!n)
+        n = new SpinnerNode(window());
+
+    n->setSpinning(m_spinning);
+
+    return n;
+}
+
+#include "spinner.moc"