1 files changed, 100 insertions, 0 deletions
diff --git a/examples/animation/easing/animation.h b/examples/animation/easing/animation.h
new file mode 100644
index 0000000000..f0aef6560b
--- /dev/null
+++ b/examples/animation/easing/animation.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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 ANIMATION_H
+#define ANIMATION_H
+
+#include <QtGui>
+
+#include <QtCore/qpropertyanimation.h>
+
+class Animation : public QPropertyAnimation {
+public:
+    enum PathType {
+        LinearPath,
+        CirclePath,
+        NPathTypes
+    };
+    Animation(QObject *target, const QByteArray &prop)
+        : QPropertyAnimation(target, prop)
+    {
+        setPathType(LinearPath);
+    }
+
+    void setPathType(PathType pathType)
+    {
+        if (pathType >= NPathTypes)
+            qWarning("Unknown pathType %d", pathType);
+
+        m_pathType = pathType;
+        m_path = QPainterPath();
+    }
+
+    void updateCurrentTime(int currentTime)
+    {
+        if (m_pathType == CirclePath) {
+            if (m_path.isEmpty()) {
+                QPointF to = endValue().toPointF();
+                QPointF from = startValue().toPointF();
+                m_path.moveTo(from);
+                m_path.addEllipse(QRectF(from, to));
+            }
+            int dura = duration();
+            const qreal progress = ((dura == 0) ? 1 : ((((currentTime - 1) % dura) + 1) / qreal(dura)));
+
+            qreal easedProgress = easingCurve().valueForProgress(progress);
+            if (easedProgress > 1.0) {
+                easedProgress -= 1.0;
+            } else if (easedProgress < 0) {
+                easedProgress += 1.0;
+            }
+            QPointF pt = m_path.pointAtPercent(easedProgress);
+            updateCurrentValue(pt);
+            emit valueChanged(pt);
+        } else {
+            QPropertyAnimation::updateCurrentTime(currentTime);
+        }
+    }
+
+    QPainterPath m_path;
+    PathType m_pathType;
+};
+
+#endif // ANIMATION_H