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| author | Kim Motoyoshi Kalland <kim.kalland@nokia.com> | 2009-11-02 14:30:55 (GMT) |
|---|---|---|
| committer | Kim Motoyoshi Kalland <kim.kalland@nokia.com> | 2009-11-02 14:54:21 (GMT) |
| commit | ab473d6a8e4fa619537c4cdaaf1b6a9d8544b30a (patch) | |
| tree | 628574cf752acfb308c9b09fd23a506dff0531bd | |
| parent | 99bbe6fa6c2322449bb8ab7dda09c53b18cde68d (diff) | |
| download | Qt-ab473d6a8e4fa619537c4cdaaf1b6a9d8544b30a.zip Qt-ab473d6a8e4fa619537c4cdaaf1b6a9d8544b30a.tar.gz Qt-ab473d6a8e4fa619537c4cdaaf1b6a9d8544b30a.tar.bz2 | |
Fixed holes in thick strokes.
When stroking small paths with a thick pen, it looked like the winding
fill rule was ignored. The bug was in the stroke generator which
generated paths where the winding number could incorrectly become zero.
Task-number: QTBUG-1537
Reviewed-by: Gunnar
| -rw-r--r-- | src/gui/painting/qstroker.cpp | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/src/gui/painting/qstroker.cpp b/src/gui/painting/qstroker.cpp index c57b3c1..228a6b1 100644 --- a/src/gui/painting/qstroker.cpp +++ b/src/gui/painting/qstroker.cpp @@ -452,6 +452,17 @@ void QStroker::joinPoints(qfixed focal_x, qfixed focal_y, const QLineF &nextLine #endif if (join == FlatJoin) { + QLineF prevLine(qt_fixed_to_real(m_back2X), qt_fixed_to_real(m_back2Y), + qt_fixed_to_real(m_back1X), qt_fixed_to_real(m_back1Y)); + QPointF isect; + QLineF::IntersectType type = prevLine.intersect(nextLine, &isect); + QLineF shortCut(prevLine.p2(), nextLine.p1()); + qreal angle = shortCut.angleTo(prevLine); + if (type == QLineF::BoundedIntersection || (angle > 90 && !qFuzzyCompare(angle, (qreal)90))) { + emitLineTo(focal_x, focal_y); + emitLineTo(qt_real_to_fixed(nextLine.x1()), qt_real_to_fixed(nextLine.y1())); + return; + } emitLineTo(qt_real_to_fixed(nextLine.x1()), qt_real_to_fixed(nextLine.y1())); @@ -468,8 +479,8 @@ void QStroker::joinPoints(qfixed focal_x, qfixed focal_y, const QLineF &nextLine // If we are on the inside, do the short cut... QLineF shortCut(prevLine.p2(), nextLine.p1()); qreal angle = shortCut.angleTo(prevLine); - if (type == QLineF::BoundedIntersection || (angle > 90 && !qFuzzyCompare(angle, (qreal)90))) { + emitLineTo(focal_x, focal_y); emitLineTo(qt_real_to_fixed(nextLine.x1()), qt_real_to_fixed(nextLine.y1())); return; } @@ -509,8 +520,9 @@ void QStroker::joinPoints(qfixed focal_x, qfixed focal_y, const QLineF &nextLine qfixed offset = m_strokeWidth / 2; QLineF shortCut(prevLine.p2(), nextLine.p1()); - qreal angle = prevLine.angle(shortCut); + qreal angle = shortCut.angleTo(prevLine); if (type == QLineF::BoundedIntersection || (angle > 90 && !qFuzzyCompare(angle, (qreal)90))) { + emitLineTo(focal_x, focal_y); emitLineTo(qt_real_to_fixed(nextLine.x1()), qt_real_to_fixed(nextLine.y1())); return; } @@ -581,6 +593,13 @@ void QStroker::joinPoints(qfixed focal_x, qfixed focal_y, const QLineF &nextLine qt_real_to_fixed(l1.x1()), qt_real_to_fixed(l1.y1())); } else if (join == SvgMiterJoin) { + QLineF shortCut(prevLine.p2(), nextLine.p1()); + qreal angle = shortCut.angleTo(prevLine); + if (type == QLineF::BoundedIntersection || (angle > 90 && !qFuzzyCompare(angle, (qreal)90))) { + emitLineTo(focal_x, focal_y); + emitLineTo(qt_real_to_fixed(nextLine.x1()), qt_real_to_fixed(nextLine.y1())); + return; + } QLineF miterLine(QPointF(qt_fixed_to_real(focal_x), qt_fixed_to_real(focal_y)), isect); if (miterLine.length() > qt_fixed_to_real(m_strokeWidth * m_miterLimit) / 2) { |