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#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/private/qtguiglobal_p.h>
#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 QPainterPathPrivate
{
public:
friend class QPainterPath;
friend class QPainterPathData;
friend class QPainterPathStroker;
friend class QPainterPathStrokerPrivate;
friend class QMatrix;
friend class QTransform;
friend class QVectorPath;
friend struct QPainterPathPrivateDeleter;
#ifndef QT_NO_DATASTREAM
friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPainterPath &);
friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPainterPath &);
#endif
QPainterPathPrivate() : ref(1) {}
private:
QAtomicInt ref;
QVector<QPainterPath::Element> elements;
};
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)
{
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)
{
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.load() == 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 qreal(0.5522847498)
QT_END_NAMESPACE
#endif // QPAINTERPATH_P_H