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//========================================================================
//
// 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, 2019 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2008, 2009 Warren Toomey <wkt@tuhs.org>
// Copyright (C) 2009, 2011 Carlos Garcia Campos <carlosgc@gnome.org>
// Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>
// Copyright (C) 2010 Hib Eris <hib@hiberis.nl>
// Copyright (C) 2011 Joshua Richardson <jric@chegg.com>
// Copyright (C) 2011 Stephen Reichling <sreichling@chegg.com>
// Copyright (C) 2012 Igor Slepchin <igor.redhat@gmail.com>
// Copyright (C) 2012 Fabio D'Urso <fabiodurso@hotmail.it>
// Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
// Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
// Copyright (C) 2019 Oliver Sander <oliver.sander@tu-dresden.de>
//
// 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 <cstdio>
#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 "<!DOCTYPE html>"
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);
HtmlLink* getLink() { return link; }
const HtmlFont &getFont() const { return *fonts->Get(fontpos); }
void endString(); // postprocessing
private:
// aender die text variable
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;
GooString* 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.
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 <top> is true, starts looking at top of page;
// otherwise starts looking at <xMin>,<yMin>. If <bottom> is true,
// stops looking at bottom of page; otherwise stops looking at
// <xMax>,<yMax>. 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(GooString *fname, GfxState *state);
// number of images on the current page
int getNumImages() { return imgList->size(); }
void dump(FILE *f, int pageNum, const std::vector<std::string>& backgroundImages);
// Clear the page.
void clear();
void conv();
private:
HtmlFont* getFont(HtmlString *hStr) { 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<std::string>& 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<HtmlImage*> *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 <fileName> is nullptr, no file is written
// (this is useful, e.g., for searching text). If <useASCII7> is true,
// text is converted to 7-bit ASCII; otherwise, text is converted to
// 8-bit ISO Latin-1. <useASCII7> should also be set for Japanese
// (EUC-JP) text. If <rawOrder> 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<OutlineItem*> *outlines, int level = 1);
void newXmlOutlineLevel(FILE *output, const std::vector<OutlineItem*> *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);
GooString *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<HtmlMetaVar*> *glMetaVars;
Catalog *catalog;
Page *docPage;
std::vector<std::string> backgroundImages;
friend class HtmlPage;
};
#endif
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