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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 "QtGui/qmatrix.h" |
59 | #include "QtCore/qstring.h" |
60 | #include "QtCore/qvector.h" |
61 | #include "private/qstroker_p.h" |
62 | #include "private/qpaintengine_p.h" |
63 | #include "private/qfontengine_p.h" |
64 | #include "private/qfontsubset_p.h" |
65 | #include "qpagelayout.h" |
66 | |
67 | QT_BEGIN_NAMESPACE |
68 | |
69 | const char *qt_real_to_string(qreal val, char *buf); |
70 | const char *qt_int_to_string(int val, char *buf); |
71 | |
72 | namespace QPdf { |
73 | |
74 | class ByteStream |
75 | { |
76 | public: |
77 | // fileBacking means that ByteStream will buffer the contents on disk |
78 | // if the size exceeds a certain threshold. In this case, if a byte |
79 | // array was passed in, its contents may no longer correspond to the |
80 | // ByteStream contents. |
81 | explicit ByteStream(bool fileBacking = false); |
82 | explicit ByteStream(QByteArray *ba, bool fileBacking = false); |
83 | ~ByteStream(); |
84 | ByteStream &operator <<(char chr); |
85 | ByteStream &operator <<(const char *str); |
86 | ByteStream &operator <<(const QByteArray &str); |
87 | ByteStream &operator <<(const ByteStream &src); |
88 | ByteStream &operator <<(qreal val); |
89 | ByteStream &operator <<(int val); |
90 | ByteStream &operator <<(const QPointF &p); |
91 | // Note that the stream may be invalidated by calls that insert data. |
92 | QIODevice *stream(); |
93 | void clear(); |
94 | |
95 | static inline int maxMemorySize() { return 100000000; } |
96 | static inline int chunkSize() { return 10000000; } |
97 | |
98 | protected: |
99 | void constructor_helper(QIODevice *dev); |
100 | void constructor_helper(QByteArray *ba); |
101 | |
102 | private: |
103 | void prepareBuffer(); |
104 | |
105 | private: |
106 | QIODevice *dev; |
107 | QByteArray ba; |
108 | bool fileBackingEnabled; |
109 | bool fileBackingActive; |
110 | bool handleDirty; |
111 | }; |
112 | |
113 | enum PathFlags { |
114 | ClipPath, |
115 | FillPath, |
116 | StrokePath, |
117 | FillAndStrokePath |
118 | }; |
119 | QByteArray generatePath(const QPainterPath &path, const QTransform &matrix, PathFlags flags); |
120 | QByteArray generateMatrix(const QTransform &matrix); |
121 | QByteArray generateDashes(const QPen &pen); |
122 | QByteArray patternForBrush(const QBrush &b); |
123 | |
124 | struct Stroker { |
125 | Stroker(); |
126 | void setPen(const QPen &pen, QPainter::RenderHints hints); |
127 | void strokePath(const QPainterPath &path); |
128 | ByteStream *stream; |
129 | bool first; |
130 | QTransform matrix; |
131 | bool cosmeticPen; |
132 | private: |
133 | QStroker basicStroker; |
134 | QDashStroker dashStroker; |
135 | QStrokerOps *stroker; |
136 | }; |
137 | |
138 | QByteArray ascii85Encode(const QByteArray &input); |
139 | |
140 | const char *toHex(ushort u, char *buffer); |
141 | const char *toHex(uchar u, char *buffer); |
142 | |
143 | } |
144 | |
145 | |
146 | class QPdfPage : public QPdf::ByteStream |
147 | { |
148 | public: |
149 | QPdfPage(); |
150 | |
151 | QVector<uint> images; |
152 | QVector<uint> graphicStates; |
153 | QVector<uint> patterns; |
154 | QVector<uint> fonts; |
155 | QVector<uint> annotations; |
156 | |
157 | void streamImage(int w, int h, int object); |
158 | |
159 | QSize pageSize; |
160 | private: |
161 | }; |
162 | |
163 | class QPdfWriter; |
164 | class QPdfEnginePrivate; |
165 | |
166 | class Q_GUI_EXPORT QPdfEngine : public QPaintEngine |
167 | { |
168 | Q_DECLARE_PRIVATE(QPdfEngine) |
169 | friend class QPdfWriter; |
170 | public: |
171 | // keep in sync with QPagedPaintDevice::PdfVersion and QPdfEnginePrivate::writeHeader()::mapping! |
172 | enum PdfVersion |
173 | { |
174 | Version_1_4, |
175 | Version_A1b, |
176 | Version_1_6 |
177 | }; |
178 | |
179 | QPdfEngine(); |
180 | QPdfEngine(QPdfEnginePrivate &d); |
181 | ~QPdfEngine() {} |
182 | |
183 | void setOutputFilename(const QString &filename); |
184 | |
185 | void setResolution(int resolution); |
186 | int resolution() const; |
187 | |
188 | void setPdfVersion(PdfVersion version); |
189 | |
190 | // reimplementations QPaintEngine |
191 | bool begin(QPaintDevice *pdev) override; |
192 | bool end() override; |
193 | |
194 | void drawPoints(const QPointF *points, int pointCount) override; |
195 | void drawLines(const QLineF *lines, int lineCount) override; |
196 | void drawRects(const QRectF *rects, int rectCount) override; |
197 | void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) override; |
198 | void drawPath (const QPainterPath & path) override; |
199 | |
200 | void drawTextItem(const QPointF &p, const QTextItem &textItem) override; |
201 | |
202 | void drawPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QRectF & sr) override; |
203 | void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, |
204 | Qt::ImageConversionFlags flags = Qt::AutoColor) override; |
205 | void drawTiledPixmap (const QRectF & rectangle, const QPixmap & pixmap, const QPointF & point) override; |
206 | |
207 | void drawHyperlink(const QRectF &r, const QUrl &url); |
208 | |
209 | void updateState(const QPaintEngineState &state) override; |
210 | |
211 | int metric(QPaintDevice::PaintDeviceMetric metricType) const; |
212 | Type type() const override; |
213 | // end reimplementations QPaintEngine |
214 | |
215 | // Printer stuff... |
216 | bool newPage(); |
217 | |
218 | // Page layout stuff |
219 | void setPageLayout(const QPageLayout &pageLayout); |
220 | void setPageSize(const QPageSize &pageSize); |
221 | void setPageOrientation(QPageLayout::Orientation orientation); |
222 | void setPageMargins(const QMarginsF &margins, QPageLayout::Unit units = QPageLayout::Point); |
223 | |
224 | QPageLayout pageLayout() const; |
225 | |
226 | void setPen(); |
227 | void setBrush(); |
228 | void setupGraphicsState(QPaintEngine::DirtyFlags flags); |
229 | |
230 | private: |
231 | void updateClipPath(const QPainterPath & path, Qt::ClipOperation op); |
232 | }; |
233 | |
234 | class Q_GUI_EXPORT QPdfEnginePrivate : public QPaintEnginePrivate |
235 | { |
236 | Q_DECLARE_PUBLIC(QPdfEngine) |
237 | public: |
238 | QPdfEnginePrivate(); |
239 | ~QPdfEnginePrivate(); |
240 | |
241 | inline uint requestObject() { return currentObject++; } |
242 | |
243 | void (); |
244 | void writeTail(); |
245 | |
246 | int addImage(const QImage &image, bool *bitmap, bool lossless, qint64 serial_no); |
247 | int addConstantAlphaObject(int brushAlpha, int penAlpha = 255); |
248 | int addBrushPattern(const QTransform &matrix, bool *specifyColor, int *gStateObject); |
249 | |
250 | void drawTextItem(const QPointF &p, const QTextItemInt &ti); |
251 | |
252 | QTransform pageMatrix() const; |
253 | |
254 | void newPage(); |
255 | |
256 | int currentObject; |
257 | |
258 | QPdfPage* currentPage; |
259 | QPdf::Stroker stroker; |
260 | |
261 | QPointF brushOrigin; |
262 | QBrush brush; |
263 | QPen pen; |
264 | QVector<QPainterPath> clips; |
265 | bool clipEnabled; |
266 | bool allClipped; |
267 | bool hasPen; |
268 | bool hasBrush; |
269 | bool simplePen; |
270 | qreal opacity; |
271 | QPdfEngine::PdfVersion pdfVersion; |
272 | |
273 | QHash<QFontEngine::FaceId, QFontSubset *> fonts; |
274 | |
275 | QPaintDevice *pdev; |
276 | |
277 | // the device the output is in the end streamed to. |
278 | QIODevice *outDevice; |
279 | bool ownsDevice; |
280 | |
281 | // printer options |
282 | QString outputFileName; |
283 | QString title; |
284 | QString creator; |
285 | bool embedFonts; |
286 | int resolution; |
287 | bool grayscale; |
288 | |
289 | // Page layout: size, orientation and margins |
290 | QPageLayout m_pageLayout; |
291 | |
292 | private: |
293 | int gradientBrush(const QBrush &b, const QTransform &matrix, int *gStateObject); |
294 | int generateGradientShader(const QGradient *gradient, const QTransform &matrix, bool alpha = false); |
295 | int generateLinearGradientShader(const QLinearGradient *lg, const QTransform &matrix, bool alpha); |
296 | int generateRadialGradientShader(const QRadialGradient *gradient, const QTransform &matrix, bool alpha); |
297 | int createShadingFunction(const QGradient *gradient, int from, int to, bool reflect, bool alpha); |
298 | |
299 | void writeInfo(); |
300 | int writeXmpMetaData(); |
301 | int writeOutputIntent(); |
302 | void (); |
303 | void writeFonts(); |
304 | void embedFont(QFontSubset *font); |
305 | qreal calcUserUnit() const; |
306 | |
307 | QVector<int> xrefPositions; |
308 | QDataStream* stream; |
309 | int streampos; |
310 | |
311 | int writeImage(const QByteArray &data, int width, int height, int depth, |
312 | int maskObject, int softMaskObject, bool dct = false, bool isMono = false); |
313 | void writePage(); |
314 | |
315 | int addXrefEntry(int object, bool printostr = true); |
316 | void printString(const QString &string); |
317 | void xprintf(const char* fmt, ...); |
318 | inline void write(const QByteArray &data) { |
319 | stream->writeRawData(data.constData(), data.size()); |
320 | streampos += data.size(); |
321 | } |
322 | |
323 | int writeCompressed(const char *src, int len); |
324 | inline int writeCompressed(const QByteArray &data) { return writeCompressed(data.constData(), data.length()); } |
325 | int writeCompressed(QIODevice *dev); |
326 | |
327 | // various PDF objects |
328 | int , catalog, info, graphicsState, patternColorSpace; |
329 | QVector<uint> pages; |
330 | QHash<qint64, uint> imageCache; |
331 | QHash<QPair<uint, uint>, uint > alphaCache; |
332 | }; |
333 | |
334 | QT_END_NAMESPACE |
335 | |
336 | #endif // QT_NO_PDF |
337 | |
338 | #endif // QPDF_P_H |
339 | |
340 | |