Improved performance of path vs path intersection where one is a rect.

By special-casing path vs rect intersections we can get much better
performance and more robust clipping.

Task-number: QTBUG-7396
Reviewed-by: Gunnar Sletta

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gui/painting/qbezier_p.h b/src/gui/painting/qbezier_p.h
index 3409bc7..f015ea8 100644
--- a/src/gui/painting/qbezier_p.h
+++ b/src/gui/painting/qbezier_p.h
@@ -59,6 +59,7 @@
 #include "QtCore/qvector.h"
 #include "QtCore/qlist.h"
 #include "QtCore/qpair.h"
+#include "QtGui/qtransform.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -96,6 +97,8 @@ public:
     QPointF pt3() const { return QPointF(x3, y3); }
     QPointF pt4() const { return QPointF(x4, y4); }
 
+    QBezier mapBy(const QTransform &transform) const;
+
     inline QPointF midPoint() const;
     inline QLineF midTangent() const;
 
@@ -104,6 +107,7 @@ public:
 
     inline void parameterSplitLeft(qreal t, QBezier *left);
     inline void split(QBezier *firstHalf, QBezier *secondHalf) const;
+
     int shifted(QBezier *curveSegments, int maxSegmets,
                 qreal offset, float threshold) const;
 
@@ -117,6 +121,8 @@ public:
     static bool findIntersections(const QBezier &a, const QBezier &b,
                                   QVector<QPair<qreal, qreal> > *t);
 
+    QBezier getSubRange(qreal t0, qreal t1) const;
+
     qreal x1, y1, x2, y2, x3, y3, x4, y4;
 };