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39 | |
40 | #ifndef QPDF_P_H |
41 | #define QPDF_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include <QtGui/private/qtguiglobal_p.h> |
55 | |
56 | #ifndef QT_NO_PDF |
57 | |
58 | #include "QtCore/qstring.h" |
59 | #include "QtCore/qvector.h" |
60 | #include "private/qstroker_p.h" |
61 | #include "private/qpaintengine_p.h" |
62 | #include "private/qfontengine_p.h" |
63 | #include "private/qfontsubset_p.h" |
64 | #include "qpagelayout.h" |
65 | |
66 | QT_BEGIN_NAMESPACE |
67 | |
68 | const char *qt_real_to_string(qreal val, char *buf); |
69 | const char *qt_int_to_string(int val, char *buf); |
70 | |
71 | namespace QPdf { |
72 | |
73 | class ByteStream |
74 | { |
75 | public: |
76 | // fileBacking means that ByteStream will buffer the contents on disk |
77 | // if the size exceeds a certain threshold. In this case, if a byte |
78 | // array was passed in, its contents may no longer correspond to the |
79 | // ByteStream contents. |
80 | explicit ByteStream(bool fileBacking = false); |
81 | explicit ByteStream(QByteArray *ba, bool fileBacking = false); |
82 | ~ByteStream(); |
83 | ByteStream &operator <<(char chr); |
84 | ByteStream &operator <<(const char *str); |
85 | ByteStream &operator <<(const QByteArray &str); |
86 | ByteStream &operator <<(const ByteStream &src); |
87 | ByteStream &operator <<(qreal val); |
88 | ByteStream &operator <<(int val); |
89 | ByteStream &operator <<(const QPointF &p); |
90 | // Note that the stream may be invalidated by calls that insert data. |
91 | QIODevice *stream(); |
92 | void clear(); |
93 | |
94 | static inline int maxMemorySize() { return 100000000; } |
95 | static inline int chunkSize() { return 10000000; } |
96 | |
97 | protected: |
98 | void constructor_helper(QIODevice *dev); |
99 | void constructor_helper(QByteArray *ba); |
100 | |
101 | private: |
102 | void prepareBuffer(); |
103 | |
104 | private: |
105 | QIODevice *dev; |
106 | QByteArray ba; |
107 | bool fileBackingEnabled; |
108 | bool fileBackingActive; |
109 | bool handleDirty; |
110 | }; |
111 | |
112 | enum PathFlags { |
113 | ClipPath, |
114 | FillPath, |
115 | StrokePath, |
116 | FillAndStrokePath |
117 | }; |
118 | QByteArray generatePath(const QPainterPath &path, const QTransform &matrix, PathFlags flags); |
119 | QByteArray generateMatrix(const QTransform &matrix); |
120 | QByteArray generateDashes(const QPen &pen); |
121 | QByteArray patternForBrush(const QBrush &b); |
122 | |
123 | struct Stroker { |
124 | Stroker(); |
125 | void setPen(const QPen &pen, QPainter::RenderHints hints); |
126 | void strokePath(const QPainterPath &path); |
127 | ByteStream *stream; |
128 | bool first; |
129 | QTransform matrix; |
130 | bool cosmeticPen; |
131 | private: |
132 | QStroker basicStroker; |
133 | QDashStroker dashStroker; |
134 | QStrokerOps *stroker; |
135 | }; |
136 | |
137 | QByteArray ascii85Encode(const QByteArray &input); |
138 | |
139 | const char *toHex(ushort u, char *buffer); |
140 | const char *toHex(uchar u, char *buffer); |
141 | |
142 | } |
143 | |
144 | |
145 | class QPdfPage : public QPdf::ByteStream |
146 | { |
147 | public: |
148 | QPdfPage(); |
149 | |
150 | QVector<uint> images; |
151 | QVector<uint> graphicStates; |
152 | QVector<uint> patterns; |
153 | QVector<uint> fonts; |
154 | QVector<uint> annotations; |
155 | |
156 | void streamImage(int w, int h, int object); |
157 | |
158 | QSize pageSize; |
159 | private: |
160 | }; |
161 | |
162 | class QPdfWriter; |
163 | class QPdfEnginePrivate; |
164 | |
165 | class Q_GUI_EXPORT QPdfEngine : public QPaintEngine |
166 | { |
167 | Q_DECLARE_PRIVATE(QPdfEngine) |
168 | friend class QPdfWriter; |
169 | public: |
170 | // keep in sync with QPagedPaintDevice::PdfVersion and QPdfEnginePrivate::writeHeader()::mapping! |
171 | enum PdfVersion |
172 | { |
173 | Version_1_4, |
174 | Version_A1b, |
175 | Version_1_6 |
176 | }; |
177 | |
178 | QPdfEngine(); |
179 | QPdfEngine(QPdfEnginePrivate &d); |
180 | ~QPdfEngine() {} |
181 | |
182 | void setOutputFilename(const QString &filename); |
183 | |
184 | void setResolution(int resolution); |
185 | int resolution() const; |
186 | |
187 | void setPdfVersion(PdfVersion version); |
188 | |
189 | void setDocumentXmpMetadata(const QByteArray &xmpMetadata); |
190 | QByteArray documentXmpMetadata() const; |
191 | |
192 | void addFileAttachment(const QString &fileName, const QByteArray &data, const QString &mimeType); |
193 | |
194 | // reimplementations QPaintEngine |
195 | bool begin(QPaintDevice *pdev) override; |
196 | bool end() override; |
197 | |
198 | void drawPoints(const QPointF *points, int pointCount) override; |
199 | void drawLines(const QLineF *lines, int lineCount) override; |
200 | void drawRects(const QRectF *rects, int rectCount) override; |
201 | void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) override; |
202 | void drawPath (const QPainterPath & path) override; |
203 | |
204 | void drawTextItem(const QPointF &p, const QTextItem &textItem) override; |
205 | |
206 | void drawPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QRectF & sr) override; |
207 | void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, |
208 | Qt::ImageConversionFlags flags = Qt::AutoColor) override; |
209 | void drawTiledPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QPointF & point) override; |
210 | |
211 | void drawHyperlink(const QRectF &r, const QUrl &url); |
212 | |
213 | void updateState(const QPaintEngineState &state) override; |
214 | |
215 | int metric(QPaintDevice::PaintDeviceMetric metricType) const; |
216 | Type type() const override; |
217 | // end reimplementations QPaintEngine |
218 | |
219 | // Printer stuff... |
220 | bool newPage(); |
221 | |
222 | // Page layout stuff |
223 | void setPageLayout(const QPageLayout &pageLayout); |
224 | void setPageSize(const QPageSize &pageSize); |
225 | void setPageOrientation(QPageLayout::Orientation orientation); |
226 | void setPageMargins(const QMarginsF &margins, QPageLayout::Unit units = QPageLayout::Point); |
227 | |
228 | QPageLayout pageLayout() const; |
229 | |
230 | void setPen(); |
231 | void setBrush(); |
232 | void setupGraphicsState(QPaintEngine::DirtyFlags flags); |
233 | |
234 | private: |
235 | void updateClipPath(const QPainterPath & path, Qt::ClipOperation op); |
236 | }; |
237 | |
238 | class Q_GUI_EXPORT QPdfEnginePrivate : public QPaintEnginePrivate |
239 | { |
240 | Q_DECLARE_PUBLIC(QPdfEngine) |
241 | public: |
242 | QPdfEnginePrivate(); |
243 | ~QPdfEnginePrivate(); |
244 | |
245 | inline uint requestObject() { return currentObject++; } |
246 | |
247 | void (); |
248 | void writeTail(); |
249 | |
250 | int addImage(const QImage &image, bool *bitmap, bool lossless, qint64 serial_no); |
251 | int addConstantAlphaObject(int brushAlpha, int penAlpha = 255); |
252 | int addBrushPattern(const QTransform &matrix, bool *specifyColor, int *gStateObject); |
253 | |
254 | void drawTextItem(const QPointF &p, const QTextItemInt &ti); |
255 | |
256 | QTransform pageMatrix() const; |
257 | |
258 | void newPage(); |
259 | |
260 | int currentObject; |
261 | |
262 | QPdfPage* currentPage; |
263 | QPdf::Stroker stroker; |
264 | |
265 | QPointF brushOrigin; |
266 | QBrush brush; |
267 | QPen pen; |
268 | QVector<QPainterPath> clips; |
269 | bool clipEnabled; |
270 | bool allClipped; |
271 | bool hasPen; |
272 | bool hasBrush; |
273 | bool simplePen; |
274 | bool needsTransform; |
275 | qreal opacity; |
276 | QPdfEngine::PdfVersion pdfVersion; |
277 | |
278 | QHash<QFontEngine::FaceId, QFontSubset *> fonts; |
279 | |
280 | QPaintDevice *pdev; |
281 | |
282 | // the device the output is in the end streamed to. |
283 | QIODevice *outDevice; |
284 | bool ownsDevice; |
285 | |
286 | // printer options |
287 | QString outputFileName; |
288 | QString title; |
289 | QString creator; |
290 | bool embedFonts; |
291 | int resolution; |
292 | bool grayscale; |
293 | |
294 | // Page layout: size, orientation and margins |
295 | QPageLayout m_pageLayout; |
296 | |
297 | private: |
298 | int gradientBrush(const QBrush &b, const QTransform &matrix, int *gStateObject); |
299 | int generateGradientShader(const QGradient *gradient, const QTransform &matrix, bool alpha = false); |
300 | int generateLinearGradientShader(const QLinearGradient *lg, const QTransform &matrix, bool alpha); |
301 | int generateRadialGradientShader(const QRadialGradient *gradient, const QTransform &matrix, bool alpha); |
302 | int createShadingFunction(const QGradient *gradient, int from, int to, bool reflect, bool alpha); |
303 | |
304 | void writeInfo(); |
305 | int writeXmpDcumentMetaData(); |
306 | int writeOutputIntent(); |
307 | void (); |
308 | void writeAttachmentRoot(); |
309 | void writeFonts(); |
310 | void embedFont(QFontSubset *font); |
311 | qreal calcUserUnit() const; |
312 | |
313 | QVector<int> xrefPositions; |
314 | QDataStream* stream; |
315 | int streampos; |
316 | |
317 | int writeImage(const QByteArray &data, int width, int height, int depth, |
318 | int maskObject, int softMaskObject, bool dct = false, bool isMono = false); |
319 | void writePage(); |
320 | |
321 | int addXrefEntry(int object, bool printostr = true); |
322 | void printString(const QString &string); |
323 | void xprintf(const char* fmt, ...); |
324 | inline void write(const QByteArray &data) { |
325 | stream->writeRawData(data.constData(), len: data.size()); |
326 | streampos += data.size(); |
327 | } |
328 | |
329 | int writeCompressed(const char *src, int len); |
330 | inline int writeCompressed(const QByteArray &data) { return writeCompressed(src: data.constData(), len: data.length()); } |
331 | int writeCompressed(QIODevice *dev); |
332 | |
333 | struct AttachmentInfo |
334 | { |
335 | AttachmentInfo (const QString &fileName, const QByteArray &data, const QString &mimeType) |
336 | : fileName(fileName), data(data), mimeType(mimeType) {} |
337 | QString fileName; |
338 | QByteArray data; |
339 | QString mimeType; |
340 | }; |
341 | |
342 | // various PDF objects |
343 | int , embeddedfilesRoot, namesRoot, catalog, info, graphicsState, patternColorSpace; |
344 | QVector<uint> pages; |
345 | QHash<qint64, uint> imageCache; |
346 | QHash<QPair<uint, uint>, uint > alphaCache; |
347 | QVector<AttachmentInfo> fileCache; |
348 | QByteArray xmpDocumentMetadata; |
349 | }; |
350 | |
351 | QT_END_NAMESPACE |
352 | |
353 | #endif // QT_NO_PDF |
354 | |
355 | #endif // QPDF_P_H |
356 | |
357 | |