//======================================================================== // // HtmlOutputDev.h // // Copyright 1997 Derek B. Noonburg // // Changed 1999 by G.Ovtcharov //======================================================================== //======================================================================== // // Modified under the Poppler project - http://poppler.freedesktop.org // // All changes made under the Poppler project to this file are licensed // under GPL version 2 or later // // Copyright (C) 2006, 2007, 2009, 2012, 2018-2022 Albert Astals Cid // Copyright (C) 2008, 2009 Warren Toomey // Copyright (C) 2009, 2011 Carlos Garcia Campos // Copyright (C) 2009 Kovid Goyal // Copyright (C) 2010 Hib Eris // Copyright (C) 2011 Joshua Richardson // Copyright (C) 2011 Stephen Reichling // Copyright (C) 2012 Igor Slepchin // Copyright (C) 2012 Fabio D'Urso // Copyright (C) 2013 Thomas Freitag // Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, . Work sponsored by the LiMux project of the city of Munich // Copyright (C) 2019 Oliver Sander // Copyright (C) 2024 g10 Code GmbH, Author: Sune Stolborg Vuorela // // To see a description of the changes please see the Changelog file that // came with your tarball or type make ChangeLog if you are building from git // //======================================================================== #ifndef HTMLOUTPUTDEV_H #define HTMLOUTPUTDEV_H #include #include "goo/gbasename.h" #include "GfxFont.h" #include "OutputDev.h" #include "HtmlLinks.h" #include "HtmlFonts.h" #include "Link.h" #include "Catalog.h" #include "UnicodeMap.h" #define xoutRound(x) ((int)(x + 0.5)) #define DOCTYPE "" class GfxState; class GooString; class HtmlImage; class PDFDoc; class OutlineItem; //------------------------------------------------------------------------ // HtmlString //------------------------------------------------------------------------ enum UnicodeTextDirection { textDirUnknown, textDirLeftRight, textDirRightLeft, textDirTopBottom }; class HtmlString { public: // Constructor. HtmlString(GfxState *state, double fontSize, HtmlFontAccu *fonts); // Destructor. ~HtmlString(); HtmlString(const HtmlString &) = delete; HtmlString &operator=(const HtmlString &) = delete; // Add a character to the string. void addChar(GfxState *state, double x, double y, double dx, double dy, Unicode u); const HtmlLink *getLink() const { return link; } const HtmlFont &getFont() const { return *fonts->Get(fontpos); } void endString(); // postprocessing private: // aender die text variable const HtmlLink *link; double xMin, xMax; // bounding box x coordinates double yMin, yMax; // bounding box y coordinates int col; // starting column Unicode *text; // the text double *xRight; // right-hand x coord of each char HtmlString *yxNext; // next string in y-major order HtmlString *xyNext; // next string in x-major order int fontpos; std::unique_ptr htext; int len; // length of text and xRight int size; // size of text and xRight arrays UnicodeTextDirection dir; // direction (left to right/right to left) HtmlFontAccu *fonts; friend class HtmlPage; }; //------------------------------------------------------------------------ // HtmlPage //------------------------------------------------------------------------ class HtmlPage { public: // Constructor. explicit HtmlPage(bool rawOrder); // Destructor. ~HtmlPage(); HtmlPage(const HtmlPage &) = delete; HtmlPage &operator=(const HtmlPage &) = delete; // Begin a new string. void beginString(GfxState *state, const GooString *s); // Add a character to the current string. void addChar(GfxState *state, double x, double y, double dx, double dy, double ox, double oy, const Unicode *u, int uLen); // unsigned char c); void updateFont(GfxState *state); // End the current string, sorting it into the list of strings. void endString(); // Coalesce strings that look like parts of the same line. void coalesce(); // Find a string. If is true, starts looking at top of page; // otherwise starts looking at ,. If is true, // stops looking at bottom of page; otherwise stops looking at // ,. If found, sets the text bounding rectangle and // returns true; otherwise returns false. // new functions void AddLink(const HtmlLink &x) { links->AddLink(x); } // add an image to the current page void addImage(std::unique_ptr &&fname, GfxState *state); // number of images on the current page int getNumImages() { return imgList.size(); } void dump(FILE *f, int pageNum, const std::vector &backgroundImages); // Clear the page. void clear(); void conv(); private: const HtmlFont *getFont(HtmlString *hStr) const { return fonts->Get(hStr->fontpos); } double fontSize; // current font size bool rawOrder; // keep strings in content stream order HtmlString *curStr; // currently active string HtmlString *yxStrings; // strings in y-major order HtmlString *xyStrings; // strings in x-major order HtmlString *yxCur1, *yxCur2; // cursors for yxStrings list void setDocName(const char *fname); void dumpAsXML(FILE *f, int page); void dumpComplex(FILE *f, int page, const std::vector &backgroundImages); int dumpComplexHeaders(FILE *const file, FILE *&pageFile, int page); // marks the position of the fonts that belong to current page (for noframes) int fontsPageMarker; HtmlFontAccu *fonts; HtmlLinks *links; std::vector imgList; GooString *DocName; int pageWidth; int pageHeight; int firstPage; // used to begin the numeration of pages friend class HtmlOutputDev; }; //------------------------------------------------------------------------ // HtmlMetaVar //------------------------------------------------------------------------ class HtmlMetaVar { public: HtmlMetaVar(const char *_name, const char *_content); ~HtmlMetaVar(); HtmlMetaVar(const HtmlMetaVar &) = delete; HtmlMetaVar &operator=(const HtmlMetaVar &) = delete; GooString *toString() const; private: GooString *name; GooString *content; }; //------------------------------------------------------------------------ // HtmlOutputDev //------------------------------------------------------------------------ class HtmlOutputDev : public OutputDev { public: // Open a text output file. If is nullptr, no file is written // (this is useful, e.g., for searching text). If is true, // text is converted to 7-bit ASCII; otherwise, text is converted to // 8-bit ISO Latin-1. should also be set for Japanese // (EUC-JP) text. If is true, the text is kept in content // stream order. HtmlOutputDev(Catalog *catalogA, const char *fileName, const char *title, const char *author, const char *keywords, const char *subject, const char *date, bool rawOrder, int firstPage = 1, bool outline = false); // Destructor. ~HtmlOutputDev() override; // Check if file was successfully created. virtual bool isOk() { return ok; } //---- get info about output device // Does this device use upside-down coordinates? // (Upside-down means (0,0) is the top left corner of the page.) bool upsideDown() override { return true; } // Does this device use drawChar() or drawString()? bool useDrawChar() override { return true; } // Does this device use beginType3Char/endType3Char? Otherwise, // text in Type 3 fonts will be drawn with drawChar/drawString. bool interpretType3Chars() override { return false; } // Does this device need non-text content? bool needNonText() override { return true; } //----- initialization and control bool checkPageSlice(Page *p, double hDPI, double vDPI, int rotate, bool useMediaBox, bool crop, int sliceX, int sliceY, int sliceW, int sliceH, bool printing, bool (*abortCheckCbk)(void *data) = nullptr, void *abortCheckCbkData = nullptr, bool (*annotDisplayDecideCbk)(Annot *annot, void *user_data) = nullptr, void *annotDisplayDecideCbkData = nullptr) override { docPage = p; return true; } // Start a page. void startPage(int pageNum, GfxState *state, XRef *xref) override; // End a page. void endPage() override; // add a background image to the list of background images, // as this seems to be done outside other processing. takes ownership of img. void addBackgroundImage(const std::string &img); //----- update text state void updateFont(GfxState *state) override; //----- text drawing void beginString(GfxState *state, const GooString *s) override; void endString(GfxState *state) override; void drawChar(GfxState *state, double x, double y, double dx, double dy, double originX, double originY, CharCode code, int nBytes, const Unicode *u, int uLen) override; void drawImageMask(GfxState *state, Object *ref, Stream *str, int width, int height, bool invert, bool interpolate, bool inlineImg) override; void drawImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, bool interpolate, const int *maskColors, bool inlineImg) override; // new feature virtual int DevType() { return 1234; } int getPageWidth() { return maxPageWidth; } int getPageHeight() { return maxPageHeight; } bool dumpDocOutline(PDFDoc *doc); private: // convert encoding into a HTML standard, or encoding->c_str if not // recognized. static std::string mapEncodingToHtml(const std::string &encoding); void doProcessLink(AnnotLink *link); GooString *getLinkDest(AnnotLink *link); void dumpMetaVars(FILE *); void doFrame(int firstPage); bool newHtmlOutlineLevel(FILE *output, const std::vector *outlines, int level = 1); void newXmlOutlineLevel(FILE *output, const std::vector *outlines); int getOutlinePageNum(OutlineItem *item); void drawJpegImage(GfxState *state, Stream *str); void drawPngImage(GfxState *state, Stream *str, int width, int height, GfxImageColorMap *colorMap, bool isMask = false); std::unique_ptr createImageFileName(const char *ext); FILE *fContentsFrame; FILE *page; // html file // FILE *tin; // image log file // bool write; bool needClose; // need to close the file? HtmlPage *pages; // text for the current page bool rawOrder; // keep text in content stream order bool doOutline; // output document outline bool ok; // set up ok? bool dumpJPEG; int pageNum; int maxPageWidth; int maxPageHeight; GooString *Docname; GooString *docTitle; std::vector glMetaVars; Catalog *catalog; Page *docPage; std::vector backgroundImages; friend class HtmlPage; }; #endif