diff options
Diffstat (limited to 'src/gui/painting/qpainterpath.cpp')
| -rw-r--r-- | src/gui/painting/qpainterpath.cpp | 57 |
1 files changed, 38 insertions, 19 deletions
diff --git a/src/gui/painting/qpainterpath.cpp b/src/gui/painting/qpainterpath.cpp index 42872359d7..a0db35ebd3 100644 --- a/src/gui/painting/qpainterpath.cpp +++ b/src/gui/painting/qpainterpath.cpp @@ -71,6 +71,24 @@ QT_BEGIN_NAMESPACE +static inline bool isValidCoord(qreal c) +{ + if (sizeof(qreal) >= sizeof(double)) + return qIsFinite(c) && fabs(c) < 1e128; + else + return qIsFinite(c) && fabsf(float(c)) < 1e16f; +} + +static bool hasValidCoords(QPointF p) +{ + return isValidCoord(p.x()) && isValidCoord(p.y()); +} + +static bool hasValidCoords(QRectF r) +{ + return isValidCoord(r.x()) && isValidCoord(r.y()) && isValidCoord(r.width()) && isValidCoord(r.height()); +} + struct QPainterPathPrivateDeleter { static inline void cleanup(QPainterPathPrivate *d) @@ -724,9 +742,9 @@ void QPainterPath::moveTo(const QPointF &p) printf("QPainterPath::moveTo() (%.2f,%.2f)\n", p.x(), p.y()); #endif - if (!qt_is_finite(p.x()) || !qt_is_finite(p.y())) { + if (!hasValidCoords(p)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::moveTo: Adding point where x or y is NaN or Inf, ignoring call"); + qWarning("QPainterPath::moveTo: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -774,9 +792,9 @@ void QPainterPath::lineTo(const QPointF &p) printf("QPainterPath::lineTo() (%.2f,%.2f)\n", p.x(), p.y()); #endif - if (!qt_is_finite(p.x()) || !qt_is_finite(p.y())) { + if (!hasValidCoords(p)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::lineTo: Adding point where x or y is NaN or Inf, ignoring call"); + qWarning("QPainterPath::lineTo: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -833,10 +851,9 @@ void QPainterPath::cubicTo(const QPointF &c1, const QPointF &c2, const QPointF & c1.x(), c1.y(), c2.x(), c2.y(), e.x(), e.y()); #endif - if (!qt_is_finite(c1.x()) || !qt_is_finite(c1.y()) || !qt_is_finite(c2.x()) || !qt_is_finite(c2.y()) - || !qt_is_finite(e.x()) || !qt_is_finite(e.y())) { + if (!hasValidCoords(c1) || !hasValidCoords(c2) || !hasValidCoords(e)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::cubicTo: Adding point where x or y is NaN or Inf, ignoring call"); + qWarning("QPainterPath::cubicTo: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -890,9 +907,9 @@ void QPainterPath::quadTo(const QPointF &c, const QPointF &e) c.x(), c.y(), e.x(), e.y()); #endif - if (!qt_is_finite(c.x()) || !qt_is_finite(c.y()) || !qt_is_finite(e.x()) || !qt_is_finite(e.y())) { + if (!hasValidCoords(c) || !hasValidCoords(e)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::quadTo: Adding point where x or y is NaN or Inf, ignoring call"); + qWarning("QPainterPath::quadTo: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -961,10 +978,9 @@ void QPainterPath::arcTo(const QRectF &rect, qreal startAngle, qreal sweepLength rect.x(), rect.y(), rect.width(), rect.height(), startAngle, sweepLength); #endif - if ((!qt_is_finite(rect.x()) && !qt_is_finite(rect.y())) || !qt_is_finite(rect.width()) || !qt_is_finite(rect.height()) - || !qt_is_finite(startAngle) || !qt_is_finite(sweepLength)) { + if (!hasValidCoords(rect) || !isValidCoord(startAngle) || !isValidCoord(sweepLength)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::arcTo: Adding arc where a parameter is NaN or Inf, ignoring call"); + qWarning("QPainterPath::arcTo: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -1067,9 +1083,9 @@ QPointF QPainterPath::currentPosition() const */ void QPainterPath::addRect(const QRectF &r) { - if (!qt_is_finite(r.x()) || !qt_is_finite(r.y()) || !qt_is_finite(r.width()) || !qt_is_finite(r.height())) { + if (!hasValidCoords(r)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::addRect: Adding rect where a parameter is NaN or Inf, ignoring call"); + qWarning("QPainterPath::addRect: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -1147,10 +1163,9 @@ void QPainterPath::addPolygon(const QPolygonF &polygon) */ void QPainterPath::addEllipse(const QRectF &boundingRect) { - if (!qt_is_finite(boundingRect.x()) || !qt_is_finite(boundingRect.y()) - || !qt_is_finite(boundingRect.width()) || !qt_is_finite(boundingRect.height())) { + if (!hasValidCoords(boundingRect)) { #ifndef QT_NO_DEBUG - qWarning("QPainterPath::addEllipse: Adding ellipse where a parameter is NaN or Inf, ignoring call"); + qWarning("QPainterPath::addEllipse: Adding point with invalid coordinates, ignoring call"); #endif return; } @@ -2501,6 +2516,7 @@ QDataStream &operator<<(QDataStream &s, const QPainterPath &p) */ QDataStream &operator>>(QDataStream &s, QPainterPath &p) { + bool errorDetected = false; int size; s >> size; @@ -2519,10 +2535,11 @@ QDataStream &operator>>(QDataStream &s, QPainterPath &p) s >> x; s >> y; Q_ASSERT(type >= 0 && type <= 3); - if (!qt_is_finite(x) || !qt_is_finite(y)) { + if (!isValidCoord(qreal(x)) || !isValidCoord(qreal(y))) { #ifndef QT_NO_DEBUG - qWarning("QDataStream::operator>>: NaN or Inf element found in path, skipping it"); + qWarning("QDataStream::operator>>: Invalid QPainterPath coordinates read, skipping it"); #endif + errorDetected = true; continue; } QPainterPath::Element elm = { qreal(x), qreal(y), QPainterPath::ElementType(type) }; @@ -2535,6 +2552,8 @@ QDataStream &operator>>(QDataStream &s, QPainterPath &p) p.d_func()->fillRule = Qt::FillRule(fillRule); p.d_func()->dirtyBounds = true; p.d_func()->dirtyControlBounds = true; + if (errorDetected) + p = QPainterPath(); // Better than to return path with possibly corrupt datastructure, which would likely cause crash return s; } #endif // QT_NO_DATASTREAM |