Fix Qt5 To-Do's in QGraphicsItem

- Merge isObscured()
- Deprecate and inline obsolete methods
- Correct outdated documentation

Change-Id: I4eb29df78785794c6d134bf9c2f5e0f3c3d6a29f
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>

src/widgets/graphicsview/qgraphicsitem.cpp

@@ -1707,16 +1707,13 @@ void QGraphicsItem::setParentItem(QGraphicsItem *newParent)
 }
 
 /*!
+    \fn QList<QGraphicsItem *> QGraphicsItem::children() const
     \obsolete
 
     Use childItems() instead.
 
     \sa setParentItem()
 */
-QList<QGraphicsItem *> QGraphicsItem::children() const
-{
-    return childItems();
-}
 
 /*!
     \since 4.4
@@ -2973,14 +2970,11 @@ bool QGraphicsItem::acceptHoverEvents() const
 }
 
 /*!
+    \fn bool QGraphicsItem::acceptsHoverEvents() const
     \obsolete
 
     Call acceptHoverEvents() instead.
 */
-bool QGraphicsItem::acceptsHoverEvents() const
-{
-    return d_ptr->acceptsHover;
-}
 
 /*!
     \since 4.4
@@ -3025,14 +3019,11 @@ void QGraphicsItem::setAcceptHoverEvents(bool enabled)
 }
 
 /*!
+    \fn void QGraphicsItem::setAcceptsHoverEvents(bool enabled)
     \obsolete
 
     Use setAcceptHoverEvents(\a enabled) instead.
 */
-void QGraphicsItem::setAcceptsHoverEvents(bool enabled)
-{
-    setAcceptHoverEvents(enabled);
-}
 
 /*! \since 4.6
 
@@ -4442,6 +4433,7 @@ void QGraphicsItem::resetTransform()
 }
 
 /*!
+    \fn void QGraphicsItem::rotate(qreal angle)
     \obsolete
 
     Use
@@ -4462,12 +4454,9 @@ void QGraphicsItem::resetTransform()
 
     \sa setTransform(), transform(), scale(), shear(), translate()
 */
-void QGraphicsItem::rotate(qreal angle)
-{
-    setTransform(QTransform().rotate(angle), true);
-}
 
 /*!
+    \fn void QGraphicsItem::scale(qreal sx, qreal sy)
     \obsolete
 
     Use
@@ -4488,12 +4477,9 @@ void QGraphicsItem::rotate(qreal angle)
 
     \sa setTransform(), transform()
 */
-void QGraphicsItem::scale(qreal sx, qreal sy)
-{
-    setTransform(QTransform::fromScale(sx, sy), true);
-}
 
 /*!
+    \fn void QGraphicsItem::shear(qreal sh, qreal sv)
     \obsolete
 
     Use
@@ -4508,12 +4494,9 @@ void QGraphicsItem::scale(qreal sx, qreal sy)
 
     \sa setTransform(), transform()
 */
-void QGraphicsItem::shear(qreal sh, qreal sv)
-{
-    setTransform(QTransform().shear(sh, sv), true);
-}
 
 /*!
+    \fn void QGraphicsItem::translate(qreal dx, qreal dy)
     \obsolete
 
     Use setPos() or setTransformOriginPoint() instead. For identical
@@ -4531,10 +4514,6 @@ void QGraphicsItem::shear(qreal sh, qreal sv)
 
     \sa setTransform(), transform()
 */
-void QGraphicsItem::translate(qreal dx, qreal dy)
-{
-    setTransform(QTransform::fromTranslate(dx, dy), true);
-}
 
 /*!
     This virtual function is called twice for all items by the
@@ -5061,21 +5040,6 @@ QList<QGraphicsItem *> QGraphicsItem::collidingItems(Qt::ItemSelectionMode mode)
     return QList<QGraphicsItem *>();
 }
 
-/*!
-    Returns true if this item's bounding rect is completely obscured by the
-    opaque shape of any of colliding items above it (i.e., with a higher Z
-    value than this item).
-
-    Its implementation is based on calling isObscuredBy(), which you can
-    reimplement to provide a custom obscurity algorithm.
-
-  \sa opaqueArea()
-*/
-bool QGraphicsItem::isObscured() const
-{
-    return isObscured(QRectF());
-}
-
 /*!
     \internal
 
@@ -5100,9 +5064,6 @@ static bool qt_QGraphicsItem_isObscured(const QGraphicsItem *item,
     Returns true if \a rect is completely obscured by the opaque shape of any
     of colliding items above it (i.e., with a higher Z value than this item).
 
-    Unlike the default isObscured() function, this function does not call
-    isObscuredBy().
-
     \sa opaqueArea()
 */
 bool QGraphicsItem::isObscured(const QRectF &rect) const

src/widgets/graphicsview/qgraphicsitem.h

@@ -180,7 +180,9 @@ public:
     QGraphicsWidget *window() const;
     QGraphicsItem *panel() const;
     void setParentItem(QGraphicsItem *parent);
-    QList<QGraphicsItem *> children() const; // ### obsolete
+#if QT_DEPRECATED_SINCE(5, 0)
+    QT_DEPRECATED inline QList<QGraphicsItem *> children() const { return childItems(); }
+#endif
     QList<QGraphicsItem *> childItems() const;
     bool isWidget() const;
     bool isWindow() const;
@@ -242,9 +244,10 @@ public:
 
     Qt::MouseButtons acceptedMouseButtons() const;
     void setAcceptedMouseButtons(Qt::MouseButtons buttons);
-
+#if QT_DEPRECATED_SINCE(5, 0)
-    bool acceptsHoverEvents() const; // ### obsolete
+    QT_DEPRECATED inline bool acceptsHoverEvents() const { return acceptHoverEvents(); }
-    void setAcceptsHoverEvents(bool enabled); // ### obsolete
+    QT_DEPRECATED inline void setAcceptsHoverEvents(bool enabled) { setAcceptHoverEvents(enabled); }
+#endif
     bool acceptHoverEvents() const;
     void setAcceptHoverEvents(bool enabled);
     bool acceptTouchEvents() const;
@@ -299,12 +302,12 @@ public:
     QTransform itemTransform(const QGraphicsItem *other, bool *ok = 0) const;
     void setTransform(const QTransform &matrix, bool combine = false);
     void resetTransform();
-
+#if QT_DEPRECATED_SINCE(5, 0)
-    void rotate(qreal angle);           // ### obsolete
+    QT_DEPRECATED inline void rotate(qreal angle) { setTransform(QTransform().rotate(angle), true); }
-    void scale(qreal sx, qreal sy);     // ### obsolete
+    QT_DEPRECATED inline void scale(qreal sx, qreal sy) { setTransform(QTransform::fromScale(sx, sy), true); }
-    void shear(qreal sh, qreal sv);     // ### obsolete
+    QT_DEPRECATED inline void shear(qreal sh, qreal sv) { setTransform(QTransform().shear(sh, sv), true); }
-    void translate(qreal dx, qreal dy); // ### obsolete
+    QT_DEPRECATED inline void translate(qreal dx, qreal dy) { setTransform(QTransform::fromTranslate(dx, dy), true); }
-
+#endif
     void setRotation(qreal angle);
     qreal rotation() const;
 
@@ -337,8 +340,7 @@ public:
     virtual bool collidesWithItem(const QGraphicsItem *other, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
     virtual bool collidesWithPath(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
     QList<QGraphicsItem *> collidingItems(Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
-    bool isObscured() const;
+    bool isObscured(const QRectF &rect = QRectF()) const;
-    bool isObscured(const QRectF &rect) const; // ### Qt 5: merge with isObscured(), add QRectF arg to isObscuredBy()
     inline bool isObscured(qreal x, qreal y, qreal w, qreal h) const;
     virtual bool isObscuredBy(const QGraphicsItem *item) const;
     virtual QPainterPath opaqueArea() const;
@@ -568,7 +570,6 @@ class Q_WIDGETS_EXPORT QGraphicsObject : public QObject, public QGraphicsItem
 public:
     QGraphicsObject(QGraphicsItem *parent = 0);
 
-    // ### Qt 5: Disambiguate
 #ifdef Q_NO_USING_KEYWORD
     const QObjectList &children() const { return QObject::children(); }
 #else