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| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ****************************************************************************/ |
| |
| #ifndef QPDF_P_H |
| #define QPDF_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/qglobal.h> |
| |
| #ifndef QT_NO_PDF |
| |
| #include "QtGui/qmatrix.h" |
| #include "QtCore/qstring.h" |
| #include "QtCore/qvector.h" |
| #include "private/qstroker_p.h" |
| #include "private/qpaintengine_p.h" |
| #include "private/qfontengine_p.h" |
| #include "private/qfontsubset_p.h" |
| #include "qpagelayout.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| const char *qt_real_to_string(qreal val, char *buf); |
| const char *qt_int_to_string(int val, char *buf); |
| |
| namespace QPdf { |
| |
| class ByteStream |
| { |
| public: |
| // fileBacking means that ByteStream will buffer the contents on disk |
| // if the size exceeds a certain threshold. In this case, if a byte |
| // array was passed in, its contents may no longer correspond to the |
| // ByteStream contents. |
| explicit ByteStream(bool fileBacking = false); |
| explicit ByteStream(QByteArray *ba, bool fileBacking = false); |
| ~ByteStream(); |
| ByteStream &operator <<(char chr); |
| ByteStream &operator <<(const char *str); |
| ByteStream &operator <<(const QByteArray &str); |
| ByteStream &operator <<(const ByteStream &src); |
| ByteStream &operator <<(qreal val); |
| ByteStream &operator <<(int val); |
| ByteStream &operator <<(const QPointF &p); |
| // Note that the stream may be invalidated by calls that insert data. |
| QIODevice *stream(); |
| void clear(); |
| |
| static inline int maxMemorySize() { return 100000000; } |
| static inline int chunkSize() { return 10000000; } |
| |
| protected: |
| void constructor_helper(QIODevice *dev); |
| void constructor_helper(QByteArray *ba); |
| |
| private: |
| void prepareBuffer(); |
| |
| private: |
| QIODevice *dev; |
| QByteArray ba; |
| bool fileBackingEnabled; |
| bool fileBackingActive; |
| bool handleDirty; |
| }; |
| |
| enum PathFlags { |
| ClipPath, |
| FillPath, |
| StrokePath, |
| FillAndStrokePath |
| }; |
| QByteArray generatePath(const QPainterPath &path, const QTransform &matrix, PathFlags flags); |
| QByteArray generateMatrix(const QTransform &matrix); |
| QByteArray generateDashes(const QPen &pen); |
| QByteArray patternForBrush(const QBrush &b); |
| |
| struct Stroker { |
| Stroker(); |
| void setPen(const QPen &pen, QPainter::RenderHints hints); |
| void strokePath(const QPainterPath &path); |
| ByteStream *stream; |
| bool first; |
| QTransform matrix; |
| bool cosmeticPen; |
| private: |
| QStroker basicStroker; |
| QDashStroker dashStroker; |
| QStrokerOps *stroker; |
| }; |
| |
| QByteArray ascii85Encode(const QByteArray &input); |
| |
| const char *toHex(ushort u, char *buffer); |
| const char *toHex(uchar u, char *buffer); |
| |
| } |
| |
| |
| class QPdfPage : public QPdf::ByteStream |
| { |
| public: |
| QPdfPage(); |
| |
| QVector<uint> images; |
| QVector<uint> graphicStates; |
| QVector<uint> patterns; |
| QVector<uint> fonts; |
| QVector<uint> annotations; |
| |
| void streamImage(int w, int h, int object); |
| |
| QSize pageSize; |
| private: |
| }; |
| |
| class QPdfWriter; |
| class QPdfEnginePrivate; |
| |
| class Q_GUI_EXPORT QPdfEngine : public QPaintEngine |
| { |
| Q_DECLARE_PRIVATE(QPdfEngine) |
| friend class QPdfWriter; |
| public: |
| QPdfEngine(); |
| QPdfEngine(QPdfEnginePrivate &d); |
| ~QPdfEngine() {} |
| |
| void setOutputFilename(const QString &filename); |
| |
| void setResolution(int resolution); |
| int resolution() const; |
| |
| // reimplementations QPaintEngine |
| bool begin(QPaintDevice *pdev) Q_DECL_OVERRIDE; |
| bool end() Q_DECL_OVERRIDE; |
| |
| void drawPoints(const QPointF *points, int pointCount) Q_DECL_OVERRIDE; |
| void drawLines(const QLineF *lines, int lineCount) Q_DECL_OVERRIDE; |
| void drawRects(const QRectF *rects, int rectCount) Q_DECL_OVERRIDE; |
| void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) Q_DECL_OVERRIDE; |
| void drawPath (const QPainterPath & path) Q_DECL_OVERRIDE; |
| |
| void drawTextItem(const QPointF &p, const QTextItem &textItem) Q_DECL_OVERRIDE; |
| |
| void drawPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QRectF & sr) Q_DECL_OVERRIDE; |
| void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, |
| Qt::ImageConversionFlags flags = Qt::AutoColor) Q_DECL_OVERRIDE; |
| void drawTiledPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QPointF & point) Q_DECL_OVERRIDE; |
| |
| void updateState(const QPaintEngineState &state) Q_DECL_OVERRIDE; |
| |
| int metric(QPaintDevice::PaintDeviceMetric metricType) const; |
| Type type() const Q_DECL_OVERRIDE; |
| // end reimplementations QPaintEngine |
| |
| // Printer stuff... |
| bool newPage(); |
| |
| // Page layout stuff |
| void setPageLayout(const QPageLayout &pageLayout); |
| void setPageSize(const QPageSize &pageSize); |
| void setPageOrientation(QPageLayout::Orientation orientation); |
| void setPageMargins(const QMarginsF &margins, QPageLayout::Unit units = QPageLayout::Point); |
| |
| QPageLayout pageLayout() const; |
| |
| void setPen(); |
| void setBrush(); |
| void setupGraphicsState(QPaintEngine::DirtyFlags flags); |
| |
| private: |
| void updateClipPath(const QPainterPath & path, Qt::ClipOperation op); |
| }; |
| |
| class Q_GUI_EXPORT QPdfEnginePrivate : public QPaintEnginePrivate |
| { |
| Q_DECLARE_PUBLIC(QPdfEngine) |
| public: |
| QPdfEnginePrivate(); |
| ~QPdfEnginePrivate(); |
| |
| inline uint requestObject() { return currentObject++; } |
| |
| void writeHeader(); |
| void writeTail(); |
| |
| int addImage(const QImage &image, bool *bitmap, qint64 serial_no); |
| int addConstantAlphaObject(int brushAlpha, int penAlpha = 255); |
| int addBrushPattern(const QTransform &matrix, bool *specifyColor, int *gStateObject); |
| |
| void drawTextItem(const QPointF &p, const QTextItemInt &ti); |
| |
| QTransform pageMatrix() const; |
| |
| void newPage(); |
| |
| int currentObject; |
| |
| QPdfPage* currentPage; |
| QPdf::Stroker stroker; |
| |
| QPointF brushOrigin; |
| QBrush brush; |
| QPen pen; |
| QList<QPainterPath> clips; |
| bool clipEnabled; |
| bool allClipped; |
| bool hasPen; |
| bool hasBrush; |
| bool simplePen; |
| qreal opacity; |
| |
| QHash<QFontEngine::FaceId, QFontSubset *> fonts; |
| |
| QPaintDevice *pdev; |
| |
| // the device the output is in the end streamed to. |
| QIODevice *outDevice; |
| bool ownsDevice; |
| |
| // printer options |
| QString outputFileName; |
| QString title; |
| QString creator; |
| bool embedFonts; |
| int resolution; |
| bool grayscale; |
| |
| // Page layout: size, orientation and margins |
| QPageLayout m_pageLayout; |
| |
| private: |
| int gradientBrush(const QBrush &b, const QTransform &matrix, int *gStateObject); |
| int generateGradientShader(const QGradient *gradient, const QTransform &matrix, bool alpha = false); |
| int generateLinearGradientShader(const QLinearGradient *lg, const QTransform &matrix, bool alpha); |
| int generateRadialGradientShader(const QRadialGradient *gradient, const QTransform &matrix, bool alpha); |
| int createShadingFunction(const QGradient *gradient, int from, int to, bool reflect, bool alpha); |
| |
| void writeInfo(); |
| void writePageRoot(); |
| void writeFonts(); |
| void embedFont(QFontSubset *font); |
| |
| QVector<int> xrefPositions; |
| QDataStream* stream; |
| int streampos; |
| |
| int writeImage(const QByteArray &data, int width, int height, int depth, |
| int maskObject, int softMaskObject, bool dct = false); |
| void writePage(); |
| |
| int addXrefEntry(int object, bool printostr = true); |
| void printString(const QString &string); |
| void xprintf(const char* fmt, ...); |
| inline void write(const QByteArray &data) { |
| stream->writeRawData(data.constData(), data.size()); |
| streampos += data.size(); |
| } |
| |
| int writeCompressed(const char *src, int len); |
| inline int writeCompressed(const QByteArray &data) { return writeCompressed(data.constData(), data.length()); } |
| int writeCompressed(QIODevice *dev); |
| |
| // various PDF objects |
| int pageRoot, catalog, info, graphicsState, patternColorSpace; |
| QVector<uint> pages; |
| QHash<qint64, uint> imageCache; |
| QHash<QPair<uint, uint>, uint > alphaCache; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_PDF |
| |
| #endif // QPDF_P_H |
| |