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Diffstat (limited to 'src/gui/painting/qpainterpath_p.h')
| -rw-r--r-- | src/gui/painting/qpainterpath_p.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/gui/painting/qpainterpath_p.h b/src/gui/painting/qpainterpath_p.h new file mode 100644 index 0000000..93f9704 --- /dev/null +++ b/src/gui/painting/qpainterpath_p.h @@ -0,0 +1,211 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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> + +QT_BEGIN_NAMESPACE + +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 Q_GUI_EXPORT 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 |