diff options
Diffstat (limited to 'src/quick/items/qquickevents.cpp')
| -rw-r--r-- | src/quick/items/qquickevents.cpp | 508 |
1 files changed, 507 insertions, 1 deletions
diff --git a/src/quick/items/qquickevents.cpp b/src/quick/items/qquickevents.cpp index 14c0adf393..86d1ddac6c 100644 --- a/src/quick/items/qquickevents.cpp +++ b/src/quick/items/qquickevents.cpp @@ -38,9 +38,15 @@ ****************************************************************************/ #include "qquickevents_p_p.h" +#include <QtGui/private/qguiapplication_p.h> +#include <QtQuick/private/qquickitem_p.h> +#include <QtQuick/private/qquickwindow_p.h> +#include <private/qdebug_p.h> QT_BEGIN_NAMESPACE +Q_LOGGING_CATEGORY(lcPointerEvents, "qt.quick.pointer.events") + /*! \qmltype KeyEvent \instantiates QQuickKeyEvent @@ -379,7 +385,7 @@ Item { \qmlproperty point QtQuick::WheelEvent::pixelDelta This property holds the delta in screen pixels and is available in platforms that - have high-resolution trackpads, such as OS X. + have high-resolution trackpads, such as \macos. The x and y cordinate of this property holds the delta in horizontal and vertical orientation. The value should be used directly to scroll content on screen. @@ -437,4 +443,504 @@ Item { \l inverted always returns false. */ +typedef QHash<QTouchDevice *, QQuickPointerDevice *> PointerDeviceForTouchDeviceHash; +Q_GLOBAL_STATIC(PointerDeviceForTouchDeviceHash, g_touchDevices) + +Q_GLOBAL_STATIC_WITH_ARGS(QQuickPointerDevice, g_genericMouseDevice, + (QQuickPointerDevice::Mouse, + QQuickPointerDevice::GenericPointer, + QQuickPointerDevice::Position | QQuickPointerDevice::Scroll | QQuickPointerDevice::Hover, + 1, 3, QLatin1String("core pointer"), 0)) + +typedef QHash<qint64, QQuickPointerDevice *> PointerDeviceForDeviceIdHash; +Q_GLOBAL_STATIC(PointerDeviceForDeviceIdHash, g_tabletDevices) + +QQuickPointerDevice *QQuickPointerDevice::touchDevice(QTouchDevice *d) +{ + if (g_touchDevices->contains(d)) + return g_touchDevices->value(d); + + QQuickPointerDevice::DeviceType type = QQuickPointerDevice::TouchScreen; + QString name; + int maximumTouchPoints = 10; + QQuickPointerDevice::Capabilities caps = QQuickPointerDevice::Capabilities(QTouchDevice::Position); + if (d) { + QQuickPointerDevice::Capabilities caps = + static_cast<QQuickPointerDevice::Capabilities>(static_cast<int>(d->capabilities()) & 0x0F); + if (d->type() == QTouchDevice::TouchPad) { + type = QQuickPointerDevice::TouchPad; + caps |= QQuickPointerDevice::Scroll; + } + name = d->name(); + maximumTouchPoints = d->maximumTouchPoints(); + } else { + qWarning() << "QQuickWindowPrivate::touchDevice: creating touch device from nullptr device in QTouchEvent"; + } + + QQuickPointerDevice *dev = new QQuickPointerDevice(type, QQuickPointerDevice::Finger, + caps, maximumTouchPoints, 0, name, 0); + g_touchDevices->insert(d, dev); + return dev; +} + +QList<QQuickPointerDevice*> QQuickPointerDevice::touchDevices() +{ + return g_touchDevices->values(); +} + +QQuickPointerDevice *QQuickPointerDevice::genericMouseDevice() +{ + return g_genericMouseDevice; +} + +QQuickPointerDevice *QQuickPointerDevice::tabletDevice(qint64 id) +{ + auto it = g_tabletDevices->find(id); + if (it != g_tabletDevices->end()) + return it.value(); + + // ### Figure out how to populate the tablet devices + return nullptr; +} + +void QQuickEventPoint::reset(Qt::TouchPointState state, QPointF scenePos, quint64 pointId, ulong timestamp) +{ + m_scenePos = scenePos; + m_pointId = pointId; + m_valid = true; + m_accept = false; + m_state = static_cast<QQuickEventPoint::State>(state); + m_timestamp = timestamp; + if (state == Qt::TouchPointPressed) + m_pressTimestamp = timestamp; + // TODO calculate velocity +} + +QQuickItem *QQuickEventPoint::grabber() const +{ + return m_grabber.data(); +} + +void QQuickEventPoint::setGrabber(QQuickItem *grabber) +{ + m_grabber = QPointer<QQuickItem>(grabber); +} + +void QQuickEventPoint::setAccepted(bool accepted) +{ + if (m_accept != accepted) { + qCDebug(lcPointerEvents) << this << m_accept << "->" << accepted; + m_accept = accepted; + } +} + +QQuickEventTouchPoint::QQuickEventTouchPoint(QQuickPointerTouchEvent *parent) + : QQuickEventPoint(parent), m_rotation(0), m_pressure(0) +{} + +void QQuickEventTouchPoint::reset(const QTouchEvent::TouchPoint &tp, ulong timestamp) +{ + QQuickEventPoint::reset(tp.state(), tp.scenePos(), tp.id(), timestamp); + m_rotation = tp.rotation(); + m_pressure = tp.pressure(); + m_uniqueId = tp.uniqueId(); +} + +/*! + \internal + \class QQuickPointerEvent + + QQuickPointerEvent is used as a long-lived object to store data related to + an event from a pointing device, such as a mouse, touch or tablet event, + during event delivery. It also provides properties which may be used later + to expose the event to QML, the same as is done with QQuickMouseEvent, + QQuickTouchPoint, QQuickKeyEvent, etc. Since only one event can be + delivered at a time, this class is effectively a singleton. We don't worry + about the QObject overhead because the instances are long-lived: we don't + dynamically create and destroy objects of this type for each event. +*/ + +QQuickPointerEvent::~QQuickPointerEvent() +{} + +QQuickPointerEvent *QQuickPointerMouseEvent::reset(QEvent *event) +{ + auto ev = static_cast<QMouseEvent*>(event); + m_event = ev; + if (!event) + return this; + + m_device = QQuickPointerDevice::genericMouseDevice(); + m_button = ev->button(); + m_pressedButtons = ev->buttons(); + Qt::TouchPointState state = Qt::TouchPointStationary; + switch (ev->type()) { + case QEvent::MouseButtonPress: + case QEvent::MouseButtonDblClick: + state = Qt::TouchPointPressed; + break; + case QEvent::MouseButtonRelease: + state = Qt::TouchPointReleased; + break; + case QEvent::MouseMove: + state = Qt::TouchPointMoved; + break; + default: + break; + } + m_mousePoint->reset(state, ev->windowPos(), 0, ev->timestamp()); // mouse is 0 + return this; +} + +QQuickPointerEvent *QQuickPointerTouchEvent::reset(QEvent *event) +{ + auto ev = static_cast<QTouchEvent*>(event); + m_event = ev; + if (!event) + return this; + + m_device = QQuickPointerDevice::touchDevice(ev->device()); + m_button = Qt::NoButton; + m_pressedButtons = Qt::NoButton; + + const QList<QTouchEvent::TouchPoint> &tps = ev->touchPoints(); + int newPointCount = tps.count(); + m_touchPoints.reserve(newPointCount); + + for (int i = m_touchPoints.size(); i < newPointCount; ++i) + m_touchPoints.insert(i, new QQuickEventTouchPoint(this)); + + // Make sure the grabbers are right from one event to the next + QVector<QQuickItem*> grabbers; + // Copy all grabbers, because the order of points might have changed in the event. + // The ID is all that we can rely on (release might remove the first point etc). + for (int i = 0; i < newPointCount; ++i) { + QQuickItem *grabber = nullptr; + if (auto point = pointById(tps.at(i).id())) + grabber = point->grabber(); + grabbers.append(grabber); + } + + for (int i = 0; i < newPointCount; ++i) { + auto point = m_touchPoints.at(i); + point->reset(tps.at(i), ev->timestamp()); + if (point->state() == QQuickEventPoint::Pressed) { + if (grabbers.at(i)) + qWarning() << "TouchPointPressed without previous release event" << point; + point->setGrabber(nullptr); + } else { + point->setGrabber(grabbers.at(i)); + } + } + m_pointCount = newPointCount; + return this; +} + +QQuickEventPoint *QQuickPointerMouseEvent::point(int i) const { + if (i == 0) + return m_mousePoint; + return nullptr; +} + +QQuickEventPoint *QQuickPointerTouchEvent::point(int i) const { + if (i >= 0 && i < m_pointCount) + return m_touchPoints.at(i); + return nullptr; +} + +QQuickEventPoint::QQuickEventPoint(QQuickPointerEvent *parent) + : QObject(parent), m_pointId(0), m_grabber(nullptr), m_timestamp(0), m_pressTimestamp(0), + m_state(QQuickEventPoint::Released), m_valid(false), m_accept(false) +{ + Q_UNUSED(m_reserved); +} + +QQuickPointerEvent *QQuickEventPoint::pointerEvent() const +{ + return static_cast<QQuickPointerEvent *>(parent()); +} + +bool QQuickPointerMouseEvent::allPointsAccepted() const { + return m_mousePoint->isAccepted(); +} + +QMouseEvent *QQuickPointerMouseEvent::asMouseEvent(const QPointF &localPos) const +{ + auto event = static_cast<QMouseEvent *>(m_event); + event->setLocalPos(localPos); + return event; +} + +QVector<QQuickItem *> QQuickPointerMouseEvent::grabbers() const +{ + QVector<QQuickItem *> result; + if (QQuickItem *grabber = m_mousePoint->grabber()) + result << grabber; + return result; +} + +void QQuickPointerMouseEvent::clearGrabbers() const { + m_mousePoint->setGrabber(nullptr); +} + +bool QQuickPointerMouseEvent::isPressEvent() const +{ + auto me = static_cast<QMouseEvent*>(m_event); + return ((me->type() == QEvent::MouseButtonPress || me->type() == QEvent::MouseButtonDblClick) && + (me->buttons() & me->button()) == me->buttons()); +} + +bool QQuickPointerTouchEvent::allPointsAccepted() const { + for (int i = 0; i < m_pointCount; ++i) { + if (!m_touchPoints.at(i)->isAccepted()) + return false; + } + return true; +} + +QVector<QQuickItem *> QQuickPointerTouchEvent::grabbers() const +{ + QVector<QQuickItem *> result; + for (int i = 0; i < m_pointCount; ++i) { + auto point = m_touchPoints.at(i); + if (QQuickItem *grabber = point->grabber()) { + if (!result.contains(grabber)) + result << grabber; + } + } + return result; +} + +void QQuickPointerTouchEvent::clearGrabbers() const { + for (auto point: m_touchPoints) + point->setGrabber(nullptr); +} + +bool QQuickPointerTouchEvent::isPressEvent() const +{ + return static_cast<QTouchEvent*>(m_event)->touchPointStates() & Qt::TouchPointPressed; +} + +QVector<QPointF> QQuickPointerEvent::unacceptedPressedPointScenePositions() const +{ + QVector<QPointF> points; + for (int i = 0; i < pointCount(); ++i) { + if (!point(i)->isAccepted() && point(i)->state() == QQuickEventPoint::Pressed) + points << point(i)->scenePos(); + } + return points; +} + +/*! + \internal + Populate the reusable synth-mouse event from one touchpoint. + It's required that isTouchEvent() be true when this is called. + If the touchpoint cannot be found, this returns nullptr. + Ownership of the event is NOT transferred to the caller. +*/ +QMouseEvent *QQuickPointerTouchEvent::syntheticMouseEvent(int pointID, QQuickItem *relativeTo) const { + const QTouchEvent::TouchPoint *p = touchPointById(pointID); + if (!p) + return nullptr; + QEvent::Type type; + Qt::MouseButton buttons = Qt::LeftButton; + switch (p->state()) { + case Qt::TouchPointPressed: + type = QEvent::MouseButtonPress; + break; + case Qt::TouchPointMoved: + case Qt::TouchPointStationary: + type = QEvent::MouseMove; + break; + case Qt::TouchPointReleased: + type = QEvent::MouseButtonRelease; + buttons = Qt::NoButton; + break; + default: + Q_ASSERT(false); + return nullptr; + } + m_synthMouseEvent = QMouseEvent(type, relativeTo->mapFromScene(p->scenePos()), + p->scenePos(), p->screenPos(), Qt::LeftButton, buttons, m_event->modifiers()); + m_synthMouseEvent.setAccepted(true); + m_synthMouseEvent.setTimestamp(m_event->timestamp()); + // In the future we will try to always have valid velocity in every QQuickEventPoint. + // QQuickFlickablePrivate::handleMouseMoveEvent() checks for QTouchDevice::Velocity + // and if it is set, then it does not need to do its own velocity calculations. + // That's probably the only usecase for this, so far. Some day Flickable should handle + // pointer events, and then passing touchpoint velocity via QMouseEvent will be obsolete. + // Conveniently (by design), QTouchDevice::Velocity == QQuickPointerDevice.Velocity + // so that we don't need to convert m_device->capabilities(). + if (m_device) + QGuiApplicationPrivate::setMouseEventCapsAndVelocity(&m_synthMouseEvent, m_device->capabilities(), p->velocity()); + QGuiApplicationPrivate::setMouseEventSource(&m_synthMouseEvent, Qt::MouseEventSynthesizedByQt); + return &m_synthMouseEvent; +} + +/*! + \internal + Returns a pointer to the QQuickEventPoint which has the \a pointId as + \l {QQuickEventPoint::pointId}{pointId}. + Returns nullptr if there is no point with that ID. + + \fn QQuickPointerEvent::pointById(quint64 pointId) const +*/ +QQuickEventPoint *QQuickPointerMouseEvent::pointById(quint64 pointId) const { + if (m_mousePoint && pointId == m_mousePoint->pointId()) + return m_mousePoint; + return nullptr; +} + +QQuickEventPoint *QQuickPointerTouchEvent::pointById(quint64 pointId) const { + auto it = std::find_if(m_touchPoints.constBegin(), m_touchPoints.constEnd(), + [pointId](const QQuickEventTouchPoint *tp) { return tp->pointId() == pointId; } ); + if (it != m_touchPoints.constEnd()) + return *it; + return nullptr; +} + + +/*! + \internal + Returns a pointer to the original TouchPoint which has the same + \l {QTouchEvent::TouchPoint::id}{id} as \a pointId, if the original event is a + QTouchEvent, and if that point is found. Otherwise, returns nullptr. +*/ +const QTouchEvent::TouchPoint *QQuickPointerTouchEvent::touchPointById(int pointId) const { + const QTouchEvent *ev = asTouchEvent(); + if (!ev) + return nullptr; + const QList<QTouchEvent::TouchPoint> &tps = ev->touchPoints(); + auto it = std::find_if(tps.constBegin(), tps.constEnd(), + [pointId](QTouchEvent::TouchPoint const& tp) { return tp.id() == pointId; } ); + // return the pointer to the actual TP in QTouchEvent::_touchPoints + return (it == tps.constEnd() ? nullptr : it.operator->()); +} + +/*! + \internal + Make a new QTouchEvent, giving it a subset of the original touch points. + + Returns a nullptr if all points are stationary or there are no points inside the item. +*/ +QTouchEvent *QQuickPointerTouchEvent::touchEventForItem(QQuickItem *item, bool isFiltering) const +{ + QList<QTouchEvent::TouchPoint> touchPoints; + Qt::TouchPointStates eventStates; + // TODO maybe add QQuickItem::mapVector2DFromScene(QVector2D) to avoid needing QQuickItemPrivate here + // Or else just document that velocity is always scene-relative and is not scaled and rotated with the item + // but that would require changing tst_qquickwindow::touchEvent_velocity(): it expects transformed velocity + + QMatrix4x4 transformMatrix(QQuickItemPrivate::get(item)->windowToItemTransform()); + for (int i = 0; i < m_pointCount; ++i) { + auto p = m_touchPoints.at(i); + if (p->isAccepted()) + continue; + bool isGrabber = p->grabber() == item; + bool isPressInside = p->state() == QQuickEventPoint::Pressed && item->contains(item->mapFromScene(p->scenePos())); + if (!(isGrabber || isPressInside || isFiltering)) + continue; + + const QTouchEvent::TouchPoint *tp = touchPointById(p->pointId()); + if (tp) { + eventStates |= tp->state(); + QTouchEvent::TouchPoint tpCopy = *tp; + tpCopy.setPos(item->mapFromScene(tpCopy.scenePos())); + tpCopy.setLastPos(item->mapFromScene(tpCopy.lastScenePos())); + tpCopy.setStartPos(item->mapFromScene(tpCopy.startScenePos())); + tpCopy.setRect(item->mapRectFromScene(tpCopy.sceneRect())); + tpCopy.setVelocity(transformMatrix.mapVector(tpCopy.velocity()).toVector2D()); + touchPoints << tpCopy; + } + } + + if (eventStates == Qt::TouchPointStationary || touchPoints.isEmpty()) + return nullptr; + + // if all points have the same state, set the event type accordingly + const QTouchEvent &event = *asTouchEvent(); + QEvent::Type eventType = event.type(); + switch (eventStates) { + case Qt::TouchPointPressed: + eventType = QEvent::TouchBegin; + break; + case Qt::TouchPointReleased: + eventType = QEvent::TouchEnd; + break; + default: + eventType = QEvent::TouchUpdate; + break; + } + + QTouchEvent *touchEvent = new QTouchEvent(eventType); + touchEvent->setWindow(event.window()); + touchEvent->setTarget(item); + touchEvent->setDevice(event.device()); + touchEvent->setModifiers(event.modifiers()); + touchEvent->setTouchPoints(touchPoints); + touchEvent->setTouchPointStates(eventStates); + touchEvent->setTimestamp(event.timestamp()); + touchEvent->accept(); + return touchEvent; +} + +QTouchEvent *QQuickPointerTouchEvent::asTouchEvent() const +{ + return static_cast<QTouchEvent *>(m_event); +} + +#ifndef QT_NO_DEBUG_STREAM + +Q_QUICK_PRIVATE_EXPORT QDebug operator<<(QDebug dbg, const QQuickPointerDevice *dev) { + QDebugStateSaver saver(dbg); + dbg.nospace(); + if (!dev) { + dbg << "QQuickPointerDevice(0)"; + return dbg; + } + dbg << "QQuickPointerDevice("<< dev->name() << ' '; + QtDebugUtils::formatQEnum(dbg, dev->type()); + dbg << ' '; + QtDebugUtils::formatQEnum(dbg, dev->pointerType()); + dbg << " caps:"; + QtDebugUtils::formatQFlags(dbg, dev->capabilities()); + if (dev->type() == QQuickPointerDevice::TouchScreen || + dev->type() == QQuickPointerDevice::TouchPad) + dbg << " maxTouchPoints:" << dev->maximumTouchPoints(); + else + dbg << " buttonCount:" << dev->buttonCount(); + dbg << ')'; + return dbg; +} + +Q_QUICK_PRIVATE_EXPORT QDebug operator<<(QDebug dbg, const QQuickPointerEvent *event) { + QDebugStateSaver saver(dbg); + dbg.nospace(); + dbg << "QQuickPointerEvent(dev:"; + QtDebugUtils::formatQEnum(dbg, event->device()->type()); + if (event->buttons() != Qt::NoButton) { + dbg << " buttons:"; + QtDebugUtils::formatQEnum(dbg, event->buttons()); + } + dbg << " ["; + int c = event->pointCount(); + for (int i = 0; i < c; ++i) + dbg << event->point(i) << ' '; + dbg << "])"; + return dbg; +} + +Q_QUICK_PRIVATE_EXPORT QDebug operator<<(QDebug dbg, const QQuickEventPoint *event) { + QDebugStateSaver saver(dbg); + dbg.nospace(); + dbg << "QQuickEventPoint(valid:" << event->isValid() << " accepted:" << event->isAccepted() + << " state:"; + QtDebugUtils::formatQEnum(dbg, event->state()); + dbg << " scenePos:" << event->scenePos() << " id:" << hex << event->pointId() << dec + << " timeHeld:" << event->timeHeld() << ')'; + return dbg; +} + +#endif + QT_END_NAMESPACE |