Refactored gesture api

Rewritten the api almost from scratch, making it simplier and more
flexible at the same time.

The current implementation will not have complex gseturemanager class
inside Qt, but the QGesture base class, which represents both a
gesture recognizer and a gesture itself with a set of properties. A
set of common gestures that can use used in third-party applications
(and in Qt itself internally) is supposed to be found in
qstandardgestures.h, and a base class for user-defined gestures is in
qgesture.h

Gesture implementation for Pan on Windows7 has also been added as a
reference implementation for platform gestures.

1 files changed, 0 insertions, 249 deletions

diff --git a/src/gui/graphicsview/qgraphicssceneevent.cpp b/src/gui/graphicsview/qgraphicssceneevent.cpp
index 27a2d7e..53019f2 100644
--- a/src/gui/graphicsview/qgraphicssceneevent.cpp
+++ b/src/gui/graphicsview/qgraphicssceneevent.cpp
@@ -275,8 +275,6 @@
 
 QT_BEGIN_NAMESPACE
 
-QString qt_getStandardGestureTypeName(Qt::GestureType type);
-
 class QGraphicsSceneEventPrivate
 {
 public:
@@ -1679,253 +1677,6 @@ void QGraphicsSceneMoveEvent::setNewPos(const QPointF &pos)
     d->newPos = pos;
 }
 
-/*!
-    \class QGraphicsSceneGestureEvent
-    \brief The QGraphicsSceneGestureEvent class provides gesture events for
-           the graphics view framework.
-    \since 4.6
-    \ingroup multimedia
-    \ingroup graphicsview-api
-
-    QGraphicsSceneGestureEvent extends information provided by
-    QGestureEvent by adding some convenience functions like
-    \l{QGraphicsSceneEvent::}{widget()} to get a widget that received
-    original gesture event, and convenience functions mapToScene(),
-    mapToItem() for converting positions of the gesture into
-    QGraphicsScene and QGraphicsItem coordinate system respectively.
-
-    The scene sends the event to the first QGraphicsItem under the
-    mouse cursor that accepts gestures; a graphics item is set to accept
-    gestures with \l{QGraphicsItem::}{grabGesture()}.
-
-    \sa QGestureEvent
-*/
-
-/*!
-    Constructs a QGraphicsSceneGestureEvent.
-*/
-QGraphicsSceneGestureEvent::QGraphicsSceneGestureEvent()
-    : QGraphicsSceneEvent(QEvent::GraphicsSceneGesture)
-{
-    setAccepted(false);
-}
-
-/*!
-    Destroys a QGraphicsSceneGestureEvent.
-*/
-QGraphicsSceneGestureEvent::~QGraphicsSceneGestureEvent()
-{
-}
-
-/*!
-    Returns true if the gesture event contains gesture of specific \a
-    type; returns false otherwise.
-*/
-bool QGraphicsSceneGestureEvent::contains(const QString &type) const
-{
-    return gesture(type) != 0;
-}
-
-/*!
-    Returns true if the gesture event contains gesture of specific \a
-    type; returns false otherwise.
-*/
-bool QGraphicsSceneGestureEvent::contains(Qt::GestureType type) const
-{
-    return contains(qt_getStandardGestureTypeName(type));
-}
-
-/*!
-    Returns a list of gesture names that this event contains.
-*/
-QList<QString> QGraphicsSceneGestureEvent::gestureTypes() const
-{
-    return m_gestures.keys();
-}
-
-/*!
-    Returns extended information about a gesture of specific \a type.
-*/
-const QGesture* QGraphicsSceneGestureEvent::gesture(const QString &type) const
-{
-    return m_gestures.value(type, 0);
-}
-
-/*!
-    Returns extended information about a gesture of specific \a type.
-*/
-const QGesture* QGraphicsSceneGestureEvent::gesture(Qt::GestureType type) const
-{
-    return gesture(qt_getStandardGestureTypeName(type));
-}
-
-/*!
-    Returns extended information about all gestures in the event.
-*/
-QList<QGesture*> QGraphicsSceneGestureEvent::gestures() const
-{
-    return m_gestures.values();
-}
-
-/*!
-    Returns a set of gesture names that used to be executed, but were
-    cancelled (i.e. they were not finished properly).
-*/
-QSet<QString> QGraphicsSceneGestureEvent::cancelledGestures() const
-{
-    return m_cancelledGestures;
-}
-
-/*!
-    Sets a list of gesture names \a cancelledGestures that used to be
-    executed, but were cancelled (i.e. they were not finished
-    properly).
-*/
-void QGraphicsSceneGestureEvent::setCancelledGestures(const QSet<QString> &cancelledGestures)
-{
-    m_cancelledGestures = cancelledGestures;
-}
-
-/*!
-    Maps the point \a point, which is in a view coordinate system, to
-    scene coordinate system, and returns the mapped coordinate.
-
-    A \a point is in coordinate system of the widget that received
-    gesture event.
-
-    \sa mapToItem(), {The Graphics View Coordinate System}
-*/
-QPointF QGraphicsSceneGestureEvent::mapToScene(const QPoint &point) const
-{
-    if (QGraphicsView *view = qobject_cast<QGraphicsView*>(widget()))
-        return view->mapToScene(point);
-    return QPointF();
-}
-
-/*!
-    Maps the rectangular \a rect, which is in a view coordinate system, to
-    scene coordinate system, and returns the mapped coordinate.
-
-    A \a rect is in coordinate system of the widget that received
-    gesture event.
-
-    \sa mapToItem(), {The Graphics View Coordinate System}
-*/
-QPolygonF QGraphicsSceneGestureEvent::mapToScene(const QRect &rect) const
-{
-    if (QGraphicsView *view = qobject_cast<QGraphicsView*>(widget()))
-        return view->mapToScene(rect);
-    return QPolygonF();
-}
-
-/*!
-    Maps the point \a point, which is in a view coordinate system, to
-    item's \a item coordinate system, and returns the mapped coordinate.
-
-    If \a item is 0, this function returns the same as mapToScene().
-
-    \sa mapToScene(), {The Graphics View Coordinate System}
-*/
-QPointF QGraphicsSceneGestureEvent::mapToItem(const QPoint &point, QGraphicsItem *item) const
-{
-    if (item) {
-        if (QGraphicsView *view = qobject_cast<QGraphicsView*>(widget()))
-            return item->mapFromScene(view->mapToScene(point));
-    } else {
-        return mapToScene(point);
-    }
-    return QPointF();
-}
-
-/*!
-    Maps the rectangualar \a rect, which is in a view coordinate system, to
-    item's \a item coordinate system, and returns the mapped coordinate.
-
-    If \a item is 0, this function returns the same as mapToScene().
-
-    \sa mapToScene(), {The Graphics View Coordinate System}
-*/
-QPolygonF QGraphicsSceneGestureEvent::mapToItem(const QRect &rect, QGraphicsItem *item) const
-{
-    if (item) {
-        if (QGraphicsView *view = qobject_cast<QGraphicsView*>(widget()))
-            return item->mapFromScene(view->mapToScene(rect));
-    } else {
-        return mapToScene(rect);
-    }
-    return QPolygonF();
-}
-
-/*!
-    Set a list of gesture objects containing extended information about \a gestures.
-*/
-void QGraphicsSceneGestureEvent::setGestures(const QList<QGesture*> &gestures)
-{
-    foreach(QGesture *g, gestures)
-        m_gestures.insert(g->type(), g);
-}
-
-/*!
-    Set a list of gesture objects containing extended information about \a gestures.
-*/
-void QGraphicsSceneGestureEvent::setGestures(const QSet<QGesture*> &gestures)
-{
-    foreach(QGesture *g, gestures)
-        m_gestures.insert(g->type(), g);
-}
-
-/*!
-    Sets the accept flag of the all gestures for the event object.
-    This is the equivalent of calling \l{QEvent::accept()} {accept()}
-    or \l{QEvent::setAccepted()}{setAccepted(true)}.
-
-    Setting the accept flag indicates that the event receiver wants
-    the gesture. Unwanted gestures might be propagated to the parent
-    widget.
-*/
-void QGraphicsSceneGestureEvent::acceptAll()
-{
-    QHash<QString, QGesture*>::iterator it = m_gestures.begin(),
-                                         e = m_gestures.end();
-    for(; it != e; ++it)
-        it.value()->accept();
-    setAccepted(true);
-}
-
-/*! \fn void QGraphicsSceneGestureEvent::accept()
-  Calls QEvent::accept().
-*/
-
-/*!
-  Sets the accept flag of the gesture specified by \a type.  This is
-  equivalent to calling \l{QGestureEvent::gesture()} {gesture(type)}->
-  \l{QGesture::accept()}{accept()}
-
-  Setting the accept flag indicates that the event receiver
-  wants the gesture. Unwanted gestures might be propagated to the parent
-  widget.
-*/
-void QGraphicsSceneGestureEvent::accept(Qt::GestureType type)
-{
-    if (QGesture *g = m_gestures.value(qt_getStandardGestureTypeName(type), 0))
-        g->accept();
-}
-
-/*!
-
-  Sets the accept flag of the gesture specified by \a type.  This is
-  equivalent to calling \l{QGestureEvent::gesture()} {gesture(type)}->
-  \l{QGesture::accept()}{accept()}
-
-  Setting the accept flag indicates that the event receiver wants the
-  gesture. Unwanted gestures might be propagated to the parent widget.
-*/
-void QGraphicsSceneGestureEvent::accept(const QString &type)
-{
-    if (QGesture *g = m_gestures.value(type, 0))
-        g->accept();
-}
-
 QT_END_NAMESPACE
 
 #endif // QT_NO_GRAPHICSVIEW