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Diffstat (limited to 'dviware/dvisvgm/src/FontMetrics.hpp')
-rw-r--r-- | dviware/dvisvgm/src/FontMetrics.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/FontMetrics.hpp b/dviware/dvisvgm/src/FontMetrics.hpp new file mode 100644 index 0000000000..ccba26b727 --- /dev/null +++ b/dviware/dvisvgm/src/FontMetrics.hpp @@ -0,0 +1,73 @@ +/************************************************************************* +** FontMetrics.hpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 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 FONTMETRICS_HPP +#define FONTMETRICS_HPP + +#include <istream> +#include <memory> +#include <string> +#include "MessageException.hpp" + +struct FontMetrics { + virtual ~FontMetrics () =default; + virtual double getDesignSize () const =0; + virtual double getCharWidth (int c) const =0; + virtual double getCharHeight (int c) const =0; + virtual double getCharDepth (int c) const =0; + virtual double getItalicCorr (int c) const =0; + virtual double getSpace () const =0; + virtual double getSpaceStretch () const =0; + virtual double getSpaceShrink () const =0; + virtual double getQuad () const =0; + virtual double getAscent () const =0; + virtual double getDescent () const =0; + virtual bool verticalLayout () const =0; + virtual uint32_t getChecksum () const =0; + virtual uint16_t firstChar () const =0; + virtual uint16_t lastChar () const =0; + static std::unique_ptr<FontMetrics> read (const std::string &fontname); +}; + + +struct NullFontMetric : public FontMetrics { + double getDesignSize () const override {return 1;} + double getCharWidth (int c) const override {return 0;} + double getCharHeight (int c) const override {return 0;} + double getCharDepth (int c) const override {return 0;} + double getItalicCorr (int c) const override {return 0;} + double getSpace () const override {return 0;} + double getSpaceStretch () const override {return 0;} + double getSpaceShrink () const override {return 0;} + double getQuad () const override {return 0;} + double getAscent () const override {return 0;} + double getDescent () const override {return 0;} + bool verticalLayout () const override {return false;} + uint32_t getChecksum () const override {return 0;} + uint16_t firstChar () const override {return 0;} + uint16_t lastChar () const override {return 0;} +}; + + +struct FontMetricException : public MessageException { + explicit FontMetricException (const std::string &msg) : MessageException(msg) {} +}; + +#endif |