tests/manual/gestures/graphicsview/gestures.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/manual/gestures/graphicsview/gestures.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,131 @@
+/****************************************************************************
+**
+** 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 test suite 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 "gestures.h"
+
+#include <QTouchEvent>
+
+Qt::GestureType ThreeFingerSlideGesture::Type = Qt::CustomGesture;
+
+QGesture *ThreeFingerSlideGestureRecognizer::createGesture(QObject *)
+{
+    return new ThreeFingerSlideGesture;
+}
+
+QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::filterEvent(QGesture *state, QObject *, QEvent *event)
+{
+    ThreeFingerSlideGesture *d = static_cast<ThreeFingerSlideGesture *>(state);
+    QGestureRecognizer::Result result;
+    switch (event->type()) {
+    case QEvent::TouchBegin:
+        result = QGestureRecognizer::MaybeGesture;
+    case QEvent::TouchEnd:
+        if (d->gestureFired)
+            result = QGestureRecognizer::GestureFinished;
+        else
+            result = QGestureRecognizer::NotGesture;
+    case QEvent::TouchUpdate:
+        if (d->state() != Qt::NoGesture) {
+            QTouchEvent *ev = static_cast<QTouchEvent*>(event);
+            if (ev->touchPoints().size() == 3) {
+                d->gestureFired = true;
+                result = QGestureRecognizer::GestureTriggered;
+            } else {
+                result = QGestureRecognizer::MaybeGesture;
+                for (int i = 0; i < ev->touchPoints().size(); ++i) {
+                    const QTouchEvent::TouchPoint &pt = ev->touchPoints().at(i);
+                    const int distance = (pt.pos().toPoint() - pt.startPos().toPoint()).manhattanLength();
+                    if (distance > 20) {
+                        result = QGestureRecognizer::NotGesture;
+                    }
+                }
+            }
+        } else {
+            result = QGestureRecognizer::NotGesture;
+        }
+
+        break;
+    case QEvent::MouseButtonPress:
+    case QEvent::MouseButtonRelease:
+    case QEvent::MouseMove:
+        if (d->state() != Qt::NoGesture)
+            result = QGestureRecognizer::Ignore;
+        else
+            result = QGestureRecognizer::NotGesture;
+        break;
+    default:
+        result = QGestureRecognizer::Ignore;
+        break;
+    }
+    return result;
+}
+
+void ThreeFingerSlideGestureRecognizer::reset(QGesture *state)
+{
+    static_cast<ThreeFingerSlideGesture *>(state)->gestureFired = false;
+    QGestureRecognizer::reset(state);
+}
+
+
+QGesture *RotateGestureRecognizer::createGesture(QObject *)
+{
+    return new QGesture;
+}
+
+QGestureRecognizer::Result RotateGestureRecognizer::filterEvent(QGesture *, QObject *, QEvent *event)
+{
+    switch (event->type()) {
+    case QEvent::TouchBegin:
+    case QEvent::TouchEnd:
+    case QEvent::TouchUpdate:
+        break;
+    default:
+        break;
+    }
+    return QGestureRecognizer::Ignore;
+}
+
+void RotateGestureRecognizer::reset(QGesture *state)
+{
+    QGestureRecognizer::reset(state);
+}
+
+#include "moc_gestures.cpp"