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/*************************************************************************
** PSPreviewFilter.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2020 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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 <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef PSPREVIEWFILTER_HPP
#define PSPREVIEWFILTER_HPP
#include <string>
#include <vector>
#include "BoundingBox.hpp"
#include "PSFilter.hpp"
class SpecialActions;
class PSPreviewFilter : public PSFilter {
public:
explicit PSPreviewFilter (PSInterpreter &psi) : PSFilter(psi) {}
void activate ();
void execute (const char *code, size_t len) override;
bool active () const override {return _active;}
std::string version () const {return _version;}
bool tightpage () const {return _tightpage;}
void setDviScaleFactor (double dvi2bp) {_dvi2bp = dvi2bp;}
void assignBorders (BoundingBox &bbox) const;
bool getBoundingBox (BoundingBox &bbox) const;
double height () const;
double depth () const;
double width () const;
private:
std::string _version; ///< version string of preview package
bool _active=false; ///< true if filter is active
bool _tightpage=false; ///< true if tightpage option was given
double _dvi2bp=1.0/65536.0; ///< factor to convert dvi units to PS points
std::vector<int> _boxExtents; ///< bounding box data set by the preview package (in DVI units)
};
#endif
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