1 files changed, 254 insertions, 0 deletions
diff --git a/src/gui/kernel/qstandardgestures.cpp b/src/gui/kernel/qstandardgestures.cpp
new file mode 100644
index 0000000..c8b11c5
--- /dev/null
+++ b/src/gui/kernel/qstandardgestures.cpp
@@ -0,0 +1,254 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qstandardgestures.h"
+#include "qstandardgestures_p.h"
+
+#include <qabstractscrollarea.h>
+#include <qscrollbar.h>
+#include <private/qapplication_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QPanGesture
+    \since 4.6
+
+    \brief The QPanGesture class represents a Pan gesture,
+    providing additional information related to panning.
+*/
+
+/*!
+    Creates a new Pan gesture handler object and marks it as a child of \a
+    parent.
+
+    On some platform like Windows it's necessary to provide a non-null widget
+    as \a parent to get native gesture support.
+*/
+QPanGesture::QPanGesture(QWidget *parent)
+    : QGesture(*new QPanGesturePrivate, parent)
+{
+#ifdef Q_WS_WIN
+    if (parent) {
+        QApplicationPrivate* getQApplicationPrivateInternal();
+        QApplicationPrivate *qAppPriv = getQApplicationPrivateInternal();
+        qAppPriv->widgetGestures[parent].pan = this;
+    }
+#endif
+}
+
+/*! \internal */
+bool QPanGesture::event(QEvent *event)
+{
+#ifdef Q_WS_WIN
+    QApplicationPrivate* getQApplicationPrivateInternal();
+    switch (event->type()) {
+    case QEvent::ParentAboutToChange:
+        if (QWidget *w = qobject_cast<QWidget*>(parent()))
+            getQApplicationPrivateInternal()->widgetGestures[w].pan = 0;
+        break;
+    case QEvent::ParentChange:
+        if (QWidget *w = qobject_cast<QWidget*>(parent()))
+            getQApplicationPrivateInternal()->widgetGestures[w].pan = this;
+        break;
+    default:
+        break;
+    }
+#endif
+    return QObject::event(event);
+}
+
+/*! \internal */
+bool QPanGesture::filterEvent(QEvent *event)
+{
+    Q_D(QPanGesture);
+    if (!event->spontaneous())
+        return false;
+    const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+    if (event->type() == QEvent::TouchBegin) {
+        d->touchPoints = ev->touchPoints();
+        const QPoint p = ev->touchPoints().at(0).pos().toPoint();
+        setStartPos(p);
+        setLastPos(p);
+        setPos(p);
+        return false;
+    } else if (event->type() == QEvent::TouchEnd) {
+        if (state() != Qt::NoGesture) {
+            setState(Qt::GestureFinished);
+            setLastPos(pos());
+            setPos(ev->touchPoints().at(0).pos().toPoint());
+            emit triggered();
+            emit finished();
+        }
+        setState(Qt::NoGesture);
+        reset();
+    } else if (event->type() == QEvent::TouchUpdate) {
+        d->touchPoints = ev->touchPoints();
+        QPointF pt = d->touchPoints.at(0).pos() - d->touchPoints.at(0).startPos();
+        setLastPos(pos());
+        setPos(ev->touchPoints().at(0).pos().toPoint());
+        if (pt.x() > 10 || pt.y() > 10 || pt.x() < -10 || pt.y() < -10) {
+            if (state() == Qt::NoGesture)
+                setState(Qt::GestureStarted);
+            else
+                setState(Qt::GestureUpdated);
+            emit triggered();
+        }
+    }
+    return false;
+}
+
+/*! \internal */
+void QPanGesture::reset()
+{
+    Q_D(QPanGesture);
+    d->touchPoints.clear();
+}
+
+/*!
+    \property QPanGesture::totalOffset
+
+    Specifies a total pan offset since the start of the gesture.
+*/
+QSize QPanGesture::totalOffset() const
+{
+    QPoint pt = pos() - startPos();
+    return QSize(pt.x(), pt.y());
+}
+
+/*!
+    \property QPanGesture::lastOffset
+
+    Specifies a pan offset since the last time the gesture was
+    triggered.
+*/
+QSize QPanGesture::lastOffset() const
+{
+    QPoint pt = pos() - lastPos();
+    return QSize(pt.x(), pt.y());
+}
+
+/*!
+    \class QTapAndHoldGesture
+    \since 4.6
+
+    \brief The QTapAndHoldGesture class represents a Tap-and-Hold gesture,
+    providing additional information.
+*/
+
+const int QTapAndHoldGesturePrivate::iterationCount = 40;
+const int QTapAndHoldGesturePrivate::iterationTimeout = 50;
+
+/*!
+    Creates a new Tap and Hold gesture handler object and marks it as a child
+    of \a parent.
+
+    On some platforms like Windows there is a system-wide tap and hold gesture
+    that cannot be overriden, hence the gesture might never trigger and default
+    context menu will be shown instead.
+*/
+QTapAndHoldGesture::QTapAndHoldGesture(QWidget *parent)
+    : QGesture(*new QTapAndHoldGesturePrivate, parent)
+{
+}
+
+/*! \internal */
+bool QTapAndHoldGesture::filterEvent(QEvent *event)
+{
+    Q_D(QTapAndHoldGesture);
+    if (!event->spontaneous())
+        return false;
+    const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+    switch (event->type()) {
+    case QEvent::TouchBegin: {
+        if (d->timer.isActive())
+            d->timer.stop();
+        d->timer.start(QTapAndHoldGesturePrivate::iterationTimeout, this);
+        const QPoint p = ev->touchPoints().at(0).pos().toPoint();
+        setStartPos(p);
+        setLastPos(p);
+        setPos(p);
+        break;
+    }
+    case QEvent::TouchUpdate:
+        if (ev->touchPoints().size() != 1)
+            reset();
+        else if ((startPos() - ev->touchPoints().at(0).pos().toPoint()).manhattanLength() > 15)
+            reset();
+        break;
+    case QEvent::TouchEnd:
+        reset();
+        break;
+    default:
+        break;
+    }
+    return false;
+}
+
+/*! \internal */
+void QTapAndHoldGesture::timerEvent(QTimerEvent *event)
+{
+    Q_D(QTapAndHoldGesture);
+    if (event->timerId() != d->timer.timerId())
+        return;
+    if (d->iteration == QTapAndHoldGesturePrivate::iterationCount) {
+        d->timer.stop();
+        setState(Qt::GestureFinished);
+        emit triggered();
+    } else {
+        setState(Qt::GestureStarted);
+        emit triggered();
+    }
+    ++d->iteration;
+}
+
+/*! \internal */
+void QTapAndHoldGesture::reset()
+{
+    Q_D(QTapAndHoldGesture);
+    if (state() != Qt::NoGesture)
+        emit cancelled();
+    setState(Qt::NoGesture);
+    d->timer.stop();
+    d->iteration = 0;
+}
+
+QT_END_NAMESPACE