--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/kernel/qstandardgestures.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,236 @@
+/****************************************************************************
+**
+** 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 QtGui module 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 "qstandardgestures_p.h"
+#include "qgesture.h"
+#include "qgesture_p.h"
+#include "qevent.h"
+#include "qwidget.h"
+
+QT_BEGIN_NAMESPACE
+
+QPanGestureRecognizer::QPanGestureRecognizer()
+{
+}
+
+QGesture *QPanGestureRecognizer::createGesture(QObject *target)
+{
+ if (target && target->isWidgetType()) {
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+ }
+ return new QPanGesture;
+}
+
+QGestureRecognizer::Result QPanGestureRecognizer::filterEvent(QGesture *state, QObject *, QEvent *event)
+{
+ QPanGesture *q = static_cast<QPanGesture*>(state);
+ QPanGesturePrivate *d = q->d_func();
+
+ const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+
+ QGestureRecognizer::Result result;
+
+ switch (event->type()) {
+ case QEvent::TouchBegin: {
+ result = QGestureRecognizer::MaybeGesture;
+ QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
+ d->lastPosition = p.pos().toPoint();
+ d->lastOffset = d->totalOffset = d->offset = QPointF();
+ break;
+ }
+ case QEvent::TouchEnd: {
+ if (q->state() != Qt::NoGesture) {
+ if (ev->touchPoints().size() == 2) {
+ QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);
+ QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
+ d->lastOffset = d->offset;
+ d->offset =
+ QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
+ p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
+ d->totalOffset += d->offset;
+ }
+ result = QGestureRecognizer::GestureFinished;
+ } else {
+ result = QGestureRecognizer::NotGesture;
+ }
+ break;
+ }
+ case QEvent::TouchUpdate: {
+ if (ev->touchPoints().size() >= 2) {
+ QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);
+ QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
+ d->lastOffset = d->offset;
+ d->offset =
+ QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
+ p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
+ d->totalOffset += d->offset;
+ if (d->totalOffset.x() > 10 || d->totalOffset.y() > 10 ||
+ d->totalOffset.x() < -10 || d->totalOffset.y() < -10) {
+ result = QGestureRecognizer::GestureTriggered;
+ } else {
+ result = QGestureRecognizer::MaybeGesture;
+ }
+ }
+ break;
+ }
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ case QEvent::MouseButtonRelease:
+ result = QGestureRecognizer::Ignore;
+ break;
+ default:
+ result = QGestureRecognizer::Ignore;
+ break;
+ }
+ return result;
+}
+
+void QPanGestureRecognizer::reset(QGesture *state)
+{
+ QPanGesture *pan = static_cast<QPanGesture*>(state);
+ QPanGesturePrivate *d = pan->d_func();
+
+ d->totalOffset = d->lastOffset = d->offset = QPointF();
+ d->lastPosition = QPoint();
+ d->acceleration = 0;
+
+//#if defined(QT_MAC_USE_COCOA)
+// d->singleTouchPanTimer.stop();
+// d->prevMousePos = QPointF(0, 0);
+//#endif
+
+ QGestureRecognizer::reset(state);
+}
+
+/*! \internal */
+/*
+bool QPanGestureRecognizer::event(QEvent *event)
+{
+#if defined(QT_MAC_USE_COCOA)
+ Q_D(QPanGesture);
+ if (event->type() == QEvent::Timer) {
+ const QTimerEvent *te = static_cast<QTimerEvent *>(event);
+ if (te->timerId() == d->singleTouchPanTimer.timerId()) {
+ d->singleTouchPanTimer.stop();
+ updateState(Qt::GestureStarted);
+ }
+ }
+#endif
+
+ bool consume = false;
+
+#if defined(Q_WS_WIN)
+#elif defined(QT_MAC_USE_COCOA)
+ // The following implements single touch
+ // panning on Mac:
+ const int panBeginDelay = 300;
+ const int panBeginRadius = 3;
+ const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+
+ switch (event->type()) {
+ case QEvent::TouchBegin: {
+ if (ev->touchPoints().size() == 1) {
+ d->delayManager->setEnabled(true);
+ consume = d->delayManager->append(d->gestureTarget, *event);
+ d->lastPosition = QCursor::pos();
+ d->singleTouchPanTimer.start(panBeginDelay, this);
+ }
+ break;}
+ case QEvent::TouchEnd: {
+ d->delayManager->setEnabled(false);
+ if (state() != Qt::NoGesture) {
+ updateState(Qt::GestureFinished);
+ consume = true;
+ d->delayManager->clear();
+ } else {
+ d->delayManager->replay();
+ }
+ reset();
+ break;}
+ case QEvent::TouchUpdate: {
+ consume = d->delayManager->append(d->gestureTarget, *event);
+ if (ev->touchPoints().size() == 1) {
+ if (state() == Qt::NoGesture) {
+ // INVARIANT: The singleTouchTimer has still not fired.
+ // Lets check if the user moved his finger so much from
+ // the starting point that it makes sense to cancel:
+ const QPointF startPos = ev->touchPoints().at(0).startPos().toPoint();
+ const QPointF p = ev->touchPoints().at(0).pos().toPoint();
+ if ((startPos - p).manhattanLength() > panBeginRadius) {
+ d->delayManager->replay();
+ consume = false;
+ reset();
+ } else {
+ d->lastPosition = QCursor::pos();
+ }
+ } else {
+ d->delayManager->clear();
+ QPointF mousePos = QCursor::pos();
+ QPointF dist = mousePos - d->lastPosition;
+ d->lastPosition = mousePos;
+ d->lastOffset = d->offset;
+ d->offset = QSizeF(dist.x(), dist.y());
+ d->totalOffset += d->offset;
+ updateState(Qt::GestureUpdated);
+ }
+ } else if (state() == Qt::NoGesture) {
+ d->delayManager->replay();
+ consume = false;
+ reset();
+ }
+ break;}
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ case QEvent::MouseButtonRelease:
+ if (d->delayManager->isEnabled())
+ consume = d->delayManager->append(d->gestureTarget, *event);
+ break;
+ default:
+ return false;
+ }
+#else
+ Q_UNUSED(event);
+#endif
+ return QGestureRecognizer::Ignore;
+}
+ */
+
+QT_END_NAMESPACE