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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQUICKDELIVERYAGENT_P_P_H
#define QQUICKDELIVERYAGENT_P_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtQuick/private/qquickdeliveryagent_p.h>
#include <QtGui/qevent.h>
#include <QtCore/qstack.h>
#include <private/qevent_p.h>
#include <private/qpointingdevice_p.h>
#include <QtCore/qpointer.h>
#include <private/qobject_p.h>
#include <memory>
QT_BEGIN_NAMESPACE
class QQuickDragGrabber;
class QQuickItem;
class QQuickPointerHandler;
class QQuickWindow;
/*! \internal
Extra device-specific data to be stored in QInputDevicePrivate::qqExtra
*/
struct QQuickPointingDeviceExtra {
// used in QQuickPointerHandlerPrivate::deviceDeliveryTargets
QVector<QObject *> deliveryTargets;
};
class Q_QUICK_EXPORT QQuickDeliveryAgentPrivate : public QObjectPrivate
{
public:
Q_DECLARE_PUBLIC(QQuickDeliveryAgent)
QQuickDeliveryAgentPrivate(QQuickItem *root);
~QQuickDeliveryAgentPrivate();
QQuickItem *rootItem = nullptr;
QQuickItem *activeFocusItem = nullptr;
void deliverKeyEvent(QKeyEvent *e);
enum FocusOption {
DontChangeFocusProperty = 0x01,
DontChangeSubFocusItem = 0x02
};
Q_DECLARE_FLAGS(FocusOptions, FocusOption)
void setFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = { });
void clearFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = { });
static void notifyFocusChangesRecur(QQuickItem **item, int remaining, Qt::FocusReason reason);
void clearFocusObject();
void updateFocusItemTransform();
QQuickItem *focusTargetItem() const;
// Keeps track of the item currently receiving mouse events
#if QT_CONFIG(quick_draganddrop)
QQuickDragGrabber *dragGrabber = nullptr;
#endif
QQuickItem *lastUngrabbed = nullptr;
QStack<QPointerEvent *> eventsInDelivery;
QFlatMap<QPointer<QQuickItem>, uint> hoverItems;
QVector<QQuickItem *> hasFiltered; // during event delivery to a single receiver, the filtering parents for which childMouseEventFilter was already called
QVector<QQuickItem *> skipDelivery; // during delivery of one event to all receivers, Items to which we know delivery is no longer necessary
std::unique_ptr<QMutableTouchEvent> delayedTouch;
QList<const QPointingDevice *> knownPointingDevices;
uint currentHoverId = 0;
#if QT_CONFIG(wheelevent)
uint lastWheelEventAccepted = 0;
#endif
uchar compressedTouchCount = 0;
bool allowChildEventFiltering = true;
bool frameSynchronousHoverEnabled = true;
bool hoveredLeafItemFound = false;
bool isSubsceneAgent = false;
static bool subsceneAgentsExist;
// QQuickDeliveryAgent::event() sets this to the one that's currently (trying to) handle the event
static QQuickDeliveryAgent *currentEventDeliveryAgent;
static QQuickDeliveryAgent *currentOrItemDeliveryAgent(const QQuickItem *item);
Qt::FocusReason lastFocusReason = Qt::OtherFocusReason;
int pointerEventRecursionGuard = 0;
int touchMouseId = -1; // only for obsolete stuff like QQuickItem::grabMouse()
// TODO get rid of these
const QPointingDevice *touchMouseDevice = nullptr;
ulong touchMousePressTimestamp = 0;
QPoint touchMousePressPos; // in screen coordinates
QQuickDeliveryAgent::Transform *sceneTransform = nullptr;
bool isDeliveringTouchAsMouse() const { return touchMouseId != -1 && touchMouseDevice; }
void cancelTouchMouseSynthesis();
bool checkIfDoubleTapped(ulong newPressEventTimestamp, QPoint newPressPos);
QPointingDevicePrivate::EventPointData *mousePointData();
QPointerEvent *eventInDelivery() const;
// Mouse positions are saved in widget coordinates
QPointF lastMousePosition;
bool deliverTouchAsMouse(QQuickItem *item, QTouchEvent *pointerEvent);
void translateTouchEvent(QTouchEvent *touchEvent);
void removeGrabber(QQuickItem *grabber, bool mouse = true, bool touch = true, bool cancel = false);
void onGrabChanged(QObject *grabber, QPointingDevice::GrabTransition transition, const QPointerEvent *event, const QEventPoint &point);
static QPointerEvent *clonePointerEvent(QPointerEvent *event, std::optional<QPointF> transformedLocalPos = std::nullopt);
void deliverToPassiveGrabbers(const QVector<QPointer<QObject> > &passiveGrabbers, QPointerEvent *pointerEvent);
bool sendFilteredMouseEvent(QEvent *event, QQuickItem *receiver, QQuickItem *filteringParent);
bool sendFilteredPointerEvent(QPointerEvent *event, QQuickItem *receiver, QQuickItem *filteringParent = nullptr);
bool sendFilteredPointerEventImpl(QPointerEvent *event, QQuickItem *receiver, QQuickItem *filteringParent);
bool deliverSinglePointEventUntilAccepted(QPointerEvent *);
// entry point of events to the window
void handleTouchEvent(QTouchEvent *);
void handleMouseEvent(QMouseEvent *);
bool compressTouchEvent(QTouchEvent *);
void flushFrameSynchronousEvents(QQuickWindow *win);
void deliverDelayedTouchEvent();
void handleWindowDeactivate(QQuickWindow *win);
void handleWindowHidden(QQuickWindow *win);
// utility functions that used to be in QQuickPointerEvent et al.
bool allUpdatedPointsAccepted(const QPointerEvent *ev);
static void localizePointerEvent(QPointerEvent *ev, const QQuickItem *dest);
QList<QObject *> exclusiveGrabbers(QPointerEvent *ev);
static bool anyPointGrabbed(const QPointerEvent *ev);
static bool allPointsGrabbed(const QPointerEvent *ev);
static bool isMouseEvent(const QPointerEvent *ev);
static bool isMouseOrWheelEvent(const QPointerEvent *ev);
static bool isHoverEvent(const QPointerEvent *ev);
static bool isTouchEvent(const QPointerEvent *ev);
static bool isTabletEvent(const QPointerEvent *ev);
static bool isEventFromMouseOrTouchpad(const QPointerEvent *ev);
static bool isSynthMouse(const QPointerEvent *ev);
static QQuickPointingDeviceExtra *deviceExtra(const QInputDevice *device);
// delivery of pointer events:
void touchToMouseEvent(QEvent::Type type, const QEventPoint &p, const QTouchEvent *touchEvent, QMutableSinglePointEvent *mouseEvent);
void ensureDeviceConnected(const QPointingDevice *dev);
void deliverPointerEvent(QPointerEvent *);
bool deliverTouchCancelEvent(QTouchEvent *);
bool deliverPressOrReleaseEvent(QPointerEvent *, bool handlersOnly = false);
void deliverUpdatedPoints(QPointerEvent *event);
void deliverMatchingPointsToItem(QQuickItem *item, bool isGrabber, QPointerEvent *pointerEvent, bool handlersOnly = false);
QVector<QQuickItem *> pointerTargets(QQuickItem *, const QPointerEvent *event, const QEventPoint &point,
bool checkMouseButtons, bool checkAcceptsTouch) const;
QVector<QQuickItem *> mergePointerTargets(const QVector<QQuickItem *> &list1, const QVector<QQuickItem *> &list2) const;
// hover delivery
enum class HoverChange : uint8_t {
Clear,
Set,
};
bool deliverHoverEvent(const QPointF &scenePos, const QPointF &lastScenePos, Qt::KeyboardModifiers modifiers, ulong timestamp);
bool deliverHoverEventRecursive(QQuickItem *, const QPointF &scenePos, const QPointF &lastScenePos, Qt::KeyboardModifiers modifiers, ulong timestamp);
bool deliverHoverEventToItem(QQuickItem *item, const QPointF &scenePos, const QPointF &lastScenePos, Qt::KeyboardModifiers modifiers, ulong timestamp,
HoverChange hoverChange);
bool sendHoverEvent(QEvent::Type, QQuickItem *, const QPointF &scenePos, const QPointF &lastScenePos,
Qt::KeyboardModifiers modifiers, ulong timestamp);
bool clearHover(ulong timestamp = 0);
#if QT_CONFIG(quick_draganddrop)
void deliverDragEvent(QQuickDragGrabber *, QEvent *);
bool deliverDragEvent(QQuickDragGrabber *, QQuickItem *, QDragMoveEvent *,
QVarLengthArray<QQuickItem *, 64> *currentGrabItems = nullptr,
QObject *formerTarget = nullptr);
#endif
static bool dragOverThreshold(qreal d, Qt::Axis axis, QMouseEvent *event, int startDragThreshold = -1);
static bool dragOverThreshold(qreal d, Qt::Axis axis, const QEventPoint &tp, int startDragThreshold = -1);
static bool dragOverThreshold(QVector2D delta);
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickDeliveryAgentPrivate::FocusOptions)
QT_END_NAMESPACE
#endif // QQUICKDELIVERYAGENT_P_P_H
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