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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPAINTERPATH_P_H
+#define QPAINTERPATH_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of other Qt classes. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qpainterpath.h"
+#include "QtGui/qregion.h"
+#include "QtCore/qlist.h"
+#include "QtCore/qvarlengtharray.h"
+
+#include <qdebug.h>
+
+#include <private/qvectorpath_p.h>
+#include <private/qstroker_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPainterPathStrokerPrivate
+{
+public:
+ QPainterPathStrokerPrivate();
+
+ QStroker stroker;
+ QVector<qfixed> dashPattern;
+ qreal dashOffset;
+};
+
+class QPolygonF;
+class QVectorPathConverter;
+
+class QVectorPathConverter
+{
+public:
+ QVectorPathConverter(const QVector<QPainterPath::Element> &path, uint fillRule, bool convex)
+ : pathData(path, fillRule, convex),
+ path(pathData.points.data(), path.size(),
+ pathData.elements.data(), pathData.flags) {}
+
+ const QVectorPath &vectorPath() {
+ return path;
+ }
+
+ struct QVectorPathData {
+ QVectorPathData(const QVector<QPainterPath::Element> &path, uint fillRule, bool convex)
+ : elements(path.size()),
+ points(path.size() * 2),
+ flags(0)
+ {
+ int ptsPos = 0;
+ bool isLines = true;
+ for (int i=0; i<path.size(); ++i) {
+ const QPainterPath::Element &e = path.at(i);
+ elements[i] = e.type;
+ points[ptsPos++] = e.x;
+ points[ptsPos++] = e.y;
+ if (e.type == QPainterPath::CurveToElement)
+ flags |= QVectorPath::CurvedShapeMask;
+
+ // This is to check if the path contains only alternating lineTo/moveTo,
+ // in which case we can set the LinesHint in the path. MoveTo is 0 and
+ // LineTo is 1 so the i%2 gets us what we want cheaply.
+ isLines = isLines && e.type == (QPainterPath::ElementType) (i%2);
+ }
+
+ if (fillRule == Qt::WindingFill)
+ flags |= QVectorPath::WindingFill;
+ else
+ flags |= QVectorPath::OddEvenFill;
+
+ if (isLines)
+ flags |= QVectorPath::LinesShapeMask;
+ else {
+ flags |= QVectorPath::AreaShapeMask;
+ if (!convex)
+ flags |= QVectorPath::NonConvexShapeMask;
+ }
+
+ }
+ QVarLengthArray<QPainterPath::ElementType> elements;
+ QVarLengthArray<qreal> points;
+ uint flags;
+ };
+
+ QVectorPathData pathData;
+ QVectorPath path;
+
+private:
+ Q_DISABLE_COPY(QVectorPathConverter)
+};
+
+class QPainterPathData : public QPainterPathPrivate
+{
+public:
+ QPainterPathData() :
+ cStart(0),
+ fillRule(Qt::OddEvenFill),
+ dirtyBounds(false),
+ dirtyControlBounds(false),
+ pathConverter(0)
+ {
+ ref = 1;
+ require_moveTo = false;
+ convex = false;
+ }
+
+ QPainterPathData(const QPainterPathData &other) :
+ QPainterPathPrivate(), cStart(other.cStart), fillRule(other.fillRule),
+ bounds(other.bounds),
+ controlBounds(other.controlBounds),
+ dirtyBounds(other.dirtyBounds),
+ dirtyControlBounds(other.dirtyControlBounds),
+ convex(other.convex),
+ pathConverter(0)
+ {
+ ref = 1;
+ require_moveTo = false;
+ elements = other.elements;
+ }
+
+ ~QPainterPathData() {
+ delete pathConverter;
+ }
+
+ inline bool isClosed() const;
+ inline void close();
+ inline void maybeMoveTo();
+
+ const QVectorPath &vectorPath() {
+ if (!pathConverter)
+ pathConverter = new QVectorPathConverter(elements, fillRule, convex);
+ return pathConverter->path;
+ }
+
+ int cStart;
+ Qt::FillRule fillRule;
+
+ QRectF bounds;
+ QRectF controlBounds;
+
+ uint require_moveTo : 1;
+ uint dirtyBounds : 1;
+ uint dirtyControlBounds : 1;
+ uint convex : 1;
+
+ QVectorPathConverter *pathConverter;
+};
+
+
+inline const QPainterPath QVectorPath::convertToPainterPath() const
+{
+ QPainterPath path;
+ path.ensureData();
+ QPainterPathData *data = path.d_func();
+ data->elements.reserve(m_count);
+ int index = 0;
+ data->elements[0].x = m_points[index++];
+ data->elements[0].y = m_points[index++];
+
+ if (m_elements) {
+ data->elements[0].type = m_elements[0];
+ for (int i=1; i<m_count; ++i) {
+ QPainterPath::Element element;
+ element.x = m_points[index++];
+ element.y = m_points[index++];
+ element.type = m_elements[i];
+ data->elements << element;
+ }
+ } else {
+ data->elements[0].type = QPainterPath::MoveToElement;
+ for (int i=1; i<m_count; ++i) {
+ QPainterPath::Element element;
+ element.x = m_points[index++];
+ element.y = m_points[index++];
+ element.type = QPainterPath::LineToElement;
+ data->elements << element;
+ }
+ }
+
+ if (m_hints & OddEvenFill)
+ data->fillRule = Qt::OddEvenFill;
+ else
+ data->fillRule = Qt::WindingFill;
+ return path;
+}
+
+void Q_GUI_EXPORT qt_find_ellipse_coords(const QRectF &r, qreal angle, qreal length,
+ QPointF* startPoint, QPointF *endPoint);
+
+inline bool QPainterPathData::isClosed() const
+{
+ const QPainterPath::Element &first = elements.at(cStart);
+ const QPainterPath::Element &last = elements.last();
+ return first.x == last.x && first.y == last.y;
+}
+
+inline void QPainterPathData::close()
+{
+ Q_ASSERT(ref == 1);
+ require_moveTo = true;
+ const QPainterPath::Element &first = elements.at(cStart);
+ QPainterPath::Element &last = elements.last();
+ if (first.x != last.x || first.y != last.y) {
+ if (qFuzzyCompare(first.x, last.x) && qFuzzyCompare(first.y, last.y)) {
+ last.x = first.x;
+ last.y = first.y;
+ } else {
+ QPainterPath::Element e = { first.x, first.y, QPainterPath::LineToElement };
+ elements << e;
+ }
+ }
+}
+
+inline void QPainterPathData::maybeMoveTo()
+{
+ if (require_moveTo) {
+ QPainterPath::Element e = elements.last();
+ e.type = QPainterPath::MoveToElement;
+ elements.append(e);
+ require_moveTo = false;
+ }
+}
+
+#define KAPPA 0.5522847498
+
+
+QT_END_NAMESPACE
+
+#endif // QPAINTERPATH_P_H
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