diff options
Diffstat (limited to 'src/gui/painting/qtransform.cpp')
| -rw-r--r-- | src/gui/painting/qtransform.cpp | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/gui/painting/qtransform.cpp b/src/gui/painting/qtransform.cpp index 040d33fc2a..816514a695 100644 --- a/src/gui/painting/qtransform.cpp +++ b/src/gui/painting/qtransform.cpp @@ -1517,8 +1517,23 @@ QRegion QTransform::map(const QRegion &r) const return copy; } - if (t == TxScale && r.rectCount() == 1) - return QRegion(mapRect(r.boundingRect())); + if (t == TxScale) { + QRegion res; + if (m11() < 0 || m22() < 0) { + for (const QRect &rect : r) + res += mapRect(rect); + } else { + QVarLengthArray<QRect, 32> rects; + rects.reserve(r.rectCount()); + for (const QRect &rect : r) { + QRect nr = mapRect(rect); + if (!nr.isEmpty()) + rects.append(nr); + } + res.setRects(rects.constData(), rects.count()); + } + return res; + } QPainterPath p = map(qt_regionToPath(r)); return p.toFillPolygon(QTransform()).toPolygon(); @@ -2144,13 +2159,14 @@ QTransform::operator QVariant() const \sa inverted() */ +#if QT_DEPRECATED_SINCE(5, 13) /*! \fn qreal QTransform::det() const \obsolete Returns the matrix's determinant. Use determinant() instead. */ - +#endif /*! \fn qreal QTransform::m11() const |