qt 6.5.1 original

tests/manual/gestures/graphicsview/gestures.cpp

@@ -0,0 +1,93 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "gestures.h"
+
+#include <QTouchEvent>
+
+Qt::GestureType ThreeFingerSlideGesture::Type = Qt::CustomGesture;
+
+QGesture *ThreeFingerSlideGestureRecognizer::create(QObject *)
+{
+    return new ThreeFingerSlideGesture;
+}
+
+QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::recognize(QGesture *state, QObject *, QEvent *event)
+{
+    ThreeFingerSlideGesture *d = static_cast<ThreeFingerSlideGesture *>(state);
+    QGestureRecognizer::Result result;
+    switch (event->type()) {
+    case QEvent::TouchBegin:
+        result = QGestureRecognizer::MayBeGesture;
+        break;
+    case QEvent::TouchEnd:
+        if (d->gestureFired)
+            result = QGestureRecognizer::FinishGesture;
+        else
+            result = QGestureRecognizer::CancelGesture;
+        break;
+    case QEvent::TouchUpdate:
+        if (d->state() != Qt::NoGesture) {
+            QTouchEvent *ev = static_cast<QTouchEvent*>(event);
+            if (ev->points().size() == 3) {
+                d->gestureFired = true;
+                result = QGestureRecognizer::TriggerGesture;
+            } else {
+                result = QGestureRecognizer::MayBeGesture;
+                for (const QEventPoint &pt : ev->points()) {
+                    const int distance = (pt.globalPosition().toPoint() - pt.globalPressPosition().toPoint()).manhattanLength();
+                    if (distance > 20)
+                        result = QGestureRecognizer::CancelGesture;
+                }
+            }
+        } else {
+            result = QGestureRecognizer::CancelGesture;
+        }
+
+        break;
+    case QEvent::MouseButtonPress:
+    case QEvent::MouseButtonRelease:
+    case QEvent::MouseMove:
+        if (d->state() != Qt::NoGesture)
+            result = QGestureRecognizer::Ignore;
+        else
+            result = QGestureRecognizer::CancelGesture;
+        break;
+    default:
+        result = QGestureRecognizer::Ignore;
+        break;
+    }
+    return result;
+}
+
+void ThreeFingerSlideGestureRecognizer::reset(QGesture *state)
+{
+    static_cast<ThreeFingerSlideGesture *>(state)->gestureFired = false;
+    QGestureRecognizer::reset(state);
+}
+
+
+QGesture *RotateGestureRecognizer::create(QObject *)
+{
+    return new QGesture;
+}
+
+QGestureRecognizer::Result RotateGestureRecognizer::recognize(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"