add hover events

declarativeimports/qtextracomponents/mouseeventlistener.cpp

@@ -29,7 +29,8 @@ MouseEventListener::MouseEventListener(QDeclarativeItem *parent)
     : QDeclarativeItem(parent),
     m_pressed(false),
     m_pressAndHoldEvent(0),
-    m_lastEvent(0)
+    m_lastEvent(0),
+    m_containsMouse(false)
 {
     qmlRegisterType<KDeclarativeMouseEvent>();
     qmlRegisterType<KDeclarativeWheelEvent>();
@@ -42,6 +43,38 @@ MouseEventListener::~MouseEventListener()
 {
 }
 
+void MouseEventListener::setHoverEnabled(bool enable)
+{
+    if (enable == acceptHoverEvents()) {
+        return;
+    }
+
+    setAcceptHoverEvents(enable);
+    emit hoverEnabledChanged(enable);
+}
+
+bool MouseEventListener::hoverEnabled() const
+{
+    return acceptHoverEvents();
+}
+
+void MouseEventListener::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
+{
+    m_containsMouse = true;
+    emit containsMouseChanged(true);
+}
+
+void MouseEventListener::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+    m_containsMouse = false;
+    emit containsMouseChanged(false);
+}
+
+bool MouseEventListener::containsMouse() const
+{
+    return m_containsMouse;
+}
+
 void MouseEventListener::mousePressEvent(QGraphicsSceneMouseEvent *me)
 {
     if (m_lastEvent == me) {

declarativeimports/qtextracomponents/mouseeventlistener.h

@@ -123,12 +123,28 @@ private:
 class MouseEventListener : public QDeclarativeItem
 {
     Q_OBJECT
+    /**
+     * This property holds whether hover events are handled.
+     * By default hover events are disabled
+     */
+    Q_PROPERTY(bool hoverEnabled READ hoverEnabled WRITE setHoverEnabled NOTIFY hoverEnabledChanged)
+
+    /**
+     * True if this MouseEventListener or any of its children contains the mouse cursor: this property will change only when the mouse button is pressed if hoverEnabled is false
+     */
+    Q_PROPERTY(bool containsMouse READ containsMouse NOTIFY containsMouseChanged)
 
 public:
     MouseEventListener(QDeclarativeItem *parent=0);
     ~MouseEventListener();
 
+    bool containsMouse() const;
+    void setHoverEnabled(bool enable);
+    bool hoverEnabled() const;
+
 protected:
+    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
     void mousePressEvent(QGraphicsSceneMouseEvent *event);
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
@@ -141,6 +157,8 @@ Q_SIGNALS:
     void released(KDeclarativeMouseEvent *mouse);
     void pressAndHold(KDeclarativeMouseEvent *mouse);
     void wheelMoved(KDeclarativeWheelEvent *wheel);
+    void containsMouseChanged(bool containsMouseChanged);
+    void hoverEnabledChanged(bool hoverEnabled);
 
 private Q_SLOTS:
     void handlePressAndHold();
@@ -150,6 +168,7 @@ private:
     QPointF m_pressAndHoldPosition;
     //Important: used only for comparison. If you will ever need to access this pointer, make it a QWekapointer
     QEvent *m_lastEvent;
+    bool m_containsMouse;
 };
 
 #endif