diff options
Diffstat (limited to 'src/gui/painting/qpolygon.cpp')
| -rw-r--r-- | src/gui/painting/qpolygon.cpp | 65 |
1 files changed, 62 insertions, 3 deletions
diff --git a/src/gui/painting/qpolygon.cpp b/src/gui/painting/qpolygon.cpp index 1e154f9..cef3b7f 100644 --- a/src/gui/painting/qpolygon.cpp +++ b/src/gui/painting/qpolygon.cpp @@ -91,7 +91,7 @@ static void qt_polygon_isect_line(const QPointF &p1, const QPointF &p2, const QP \reentrant - \ingroup multimedia + \ingroup painting \ingroup shared A QPolygon object is a QVector<QPoint>. The easiest way to add @@ -208,10 +208,15 @@ QPolygon::QPolygon(int nPoints, const int *points) /*! Translates all points in the polygon by (\a{dx}, \a{dy}). + + \sa translated() */ void QPolygon::translate(int dx, int dy) { + if (dx == 0 && dy == 0) + return; + register QPoint *p = data(); register int i = size(); QPoint pt(dx, dy); @@ -226,8 +231,32 @@ void QPolygon::translate(int dx, int dy) \overload Translates all points in the polygon by the given \a offset. + + \sa translated() +*/ + +/*! + Returns a copy of the polygon that is translated by (\a{dx}, \a{dy}). + + \since 4.6 + \sa translate() */ +QPolygon QPolygon::translated(int dx, int dy) const +{ + QPolygon copy(*this); + copy.translate(dx, dy); + return copy; +} + +/*! + \fn void QPolygon::translated(const QPoint &offset) const + \overload + \since 4.6 + + Returns a copy of the polygon that is translated by the given \a offset. + \sa translate() +*/ /*! Extracts the coordinates of the point at the given \a index to @@ -460,7 +489,7 @@ QDebug operator<<(QDebug dbg, const QPolygon &a) floating point precision. \reentrant - \ingroup multimedia + \ingroup painting \ingroup shared A QPolygonF is a QVector<QPointF>. The easiest way to add points @@ -565,10 +594,15 @@ QPolygonF::QPolygonF(const QPolygon &a) /*! Translate all points in the polygon by the given \a offset. + + \sa translated() */ void QPolygonF::translate(const QPointF &offset) { + if (offset.isNull()) + return; + register QPointF *p = data(); register int i = size(); while (i--) { @@ -582,6 +616,31 @@ void QPolygonF::translate(const QPointF &offset) \overload Translates all points in the polygon by (\a{dx}, \a{dy}). + + \sa translated() +*/ + +/*! + Returns a copy of the polygon that is translated by the given \a offset. + + \since 4.6 + \sa translate() +*/ +QPolygonF QPolygonF::translated(const QPointF &offset) const +{ + QPolygonF copy(*this); + copy.translate(offset); + return copy; +} + +/*! + \fn void QPolygonF::translated(qreal dx, qreal dy) const + \overload + \since 4.6 + + Returns a copy of the polygon that is translated by (\a{dx}, \a{dy}). + + \sa translate() */ /*! @@ -683,7 +742,7 @@ QDataStream &operator>>(QDataStream &s, QPolygon &a) QVector<QPoint> &v = a; return s >> v; } -#endif +#endif // QT_NO_DATASTREAM /***************************************************************************** QPolygonF stream functions |