/************************************************************************* ** PDFToSVG.hpp ** ** ** ** This file is part of dvisvgm -- a fast DVI to SVG converter ** ** Copyright (C) 2005-2021 Martin Gieseking ** ** ** ** This program is free software; you can redistribute it and/or ** ** modify it under the terms of the GNU General Public License as ** ** published by the Free Software Foundation; either version 3 of ** ** the License, or (at your option) any later version. ** ** ** ** This program is distributed in the hope that it will be useful, but ** ** WITHOUT ANY WARRANTY; without even the implied warranty of ** ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** ** GNU General Public License for more details. ** ** ** ** You should have received a copy of the GNU General Public License ** ** along with this program; if not, see . ** *************************************************************************/ #ifndef PDFTOSVG_HPP #define PDFTOSVG_HPP #include #include "ImageToSVG.hpp" class PsSpecialHandler; class PDFToSVG : public ImageToSVG { public: PDFToSVG (const std::string &fname, SVGOutputBase &out) : ImageToSVG(fname, out) {} bool isSinglePageFormat() const override {return false;} /** Returns the total number of pages in the PDF file. */ int totalPageCount() const override { if (_totalPageCount < 0) { _totalPageCount = psInterpreter().pdfPageCount(filename()); if (_totalPageCount < 1) throw MessageException("can't retrieve number of pages from file " + filename()); } return _totalPageCount; } protected: bool imageIsValid () const override { std::ifstream ifs(filename()); if (ifs) { char buf[16]; ifs.getline(buf, 16); return std::strncmp(buf, "%PDF-1.", 7) == 0; } return false; } std::string imageFormat () const override {return "PDF";} BoundingBox imageBBox () const override {return BoundingBox();} std::string psSpecialCmd () const override {return "pdffile=";} private: mutable int _totalPageCount = -1; }; #endif