2 files changed, 62 insertions, 0 deletions
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index 517233482f..ea831f9a40 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -362,6 +362,30 @@ QSinglePointEvent::QSinglePointEvent(QEvent::Type type, const QPointingDevice *d
 }
 
 /*!
+    Returns true if this event represents a \l {button()}{button} being pressed.
+*/
+bool QSinglePointEvent::isPressEvent() const
+{
+    return m_button != Qt::NoButton && m_mouseState.testFlag(m_button);
+}
+
+/*!
+    Returns true if this event does not include a change in \l {buttons()}{button state}.
+*/
+bool QSinglePointEvent::isUpdateEvent() const
+{
+    return m_button == Qt::NoButton;
+}
+
+/*!
+    Returns true if this event represents a \l {button()}{button} being released.
+*/
+bool QSinglePointEvent::isReleaseEvent() const
+{
+    return m_button != Qt::NoButton && !m_mouseState.testFlag(m_button);
+}
+
+/*!
     \fn QPointingDevice::PointerType QPointerEvent::pointerType() const
 
     Returns the type of point that generated the event.
@@ -4224,6 +4248,32 @@ QTouchEvent::QTouchEvent(QEvent::Type eventType,
 QTouchEvent::~QTouchEvent()
 { }
 
+/*!
+    Returns true if this event includes at least one newly-pressed touchpoint.
+*/
+bool QTouchEvent::isPressEvent() const
+{
+    return m_touchPointStates.testFlag(QEventPoint::State::Pressed);
+}
+
+/*!
+    Returns true if this event does not include newly-pressed or newly-released
+    touchpoints.
+*/
+bool QTouchEvent::isUpdateEvent() const
+{
+    return !m_touchPointStates.testFlag(QEventPoint::State::Pressed) &&
+           !m_touchPointStates.testFlag(QEventPoint::State::Released);
+}
+
+/*!
+    Returns true if this event includes at least one newly-released touchpoint.
+*/
+bool QTouchEvent::isReleaseEvent() const
+{
+    return m_touchPointStates.testFlag(QEventPoint::State::Released);
+}
+
 /*! \fn QObject *QTouchEvent::target() const
 
     Returns the target object within the window on which the event occurred.
diff --git a/src/gui/kernel/qevent.h b/src/gui/kernel/qevent.h
index cfbaf8603e..8ba138a1bb 100644
--- a/src/gui/kernel/qevent.h
+++ b/src/gui/kernel/qevent.h
@@ -200,6 +200,9 @@ public:
     virtual ~QPointerEvent();
     virtual int pointCount() const = 0;
     virtual const QEventPoint &point(int i) const = 0;
+    virtual bool isPressEvent() const { return false; }
+    virtual bool isUpdateEvent() const { return false; }
+    virtual bool isReleaseEvent() const { return false; }
 
     explicit QPointerEvent(Type type, const QPointingDevice *dev, Qt::KeyboardModifiers modifiers = Qt::NoModifier);
     const QPointingDevice *pointingDevice() const;
@@ -225,6 +228,10 @@ public:
     inline QPointF scenePosition() const { return m_point.scenePosition(); }
     inline QPointF globalPosition() const { return m_point.globalPosition(); }
 
+    bool isPressEvent() const override;
+    bool isUpdateEvent() const override;
+    bool isReleaseEvent() const override;
+
 protected:
     QEventPoint m_point;
     Qt::MouseButton m_button = Qt::NoButton;
@@ -330,6 +337,8 @@ public:
     inline QPointF posF() const { return position(); }
 #endif // QT_DEPRECATED_SINCE(6, 0)
 
+    bool isUpdateEvent() const override  { return true; }
+
     // TODO deprecate when we figure out an actual replacement (point history?)
     inline QPoint oldPos() const { return m_oldPos.toPoint(); }
     inline QPointF oldPosF() const { return m_oldPos; }
@@ -954,6 +963,9 @@ public:
     inline QObject *target() const { return m_target; }
     inline QEventPoint::States touchPointStates() const { return m_touchPointStates; }
     const QList<QEventPoint> &touchPoints() const { return m_touchPoints; }
+    bool isPressEvent() const override;
+    bool isUpdateEvent() const override;
+    bool isReleaseEvent() const override;
 
 protected:
     QObject *m_target = nullptr;