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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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)
: pathData(path, fillRule),
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)
: elements(path.size()),
points(path.size() * 2),
flags(0)
{
int ptsPos = 0;
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::CurvedShapeHint;
}
if (fillRule == Qt::WindingFill)
flags |= QVectorPath::WindingFill;
else
flags |= QVectorPath::OddEvenFill;
}
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;
}
QPainterPathData(const QPainterPathData &other) :
QPainterPathPrivate(), cStart(other.cStart), fillRule(other.fillRule),
dirtyBounds(other.dirtyBounds), bounds(other.bounds),
dirtyControlBounds(other.dirtyControlBounds),
controlBounds(other.controlBounds),
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);
return pathConverter->path;
}
int cStart;
Qt::FillRule fillRule;
bool require_moveTo;
bool dirtyBounds;
QRectF bounds;
bool dirtyControlBounds;
QRectF controlBounds;
QVectorPathConverter *pathConverter;
};
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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