diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/FontManager.hpp |
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/FontManager.hpp')
-rw-r--r-- | dviware/dvisvgm/src/FontManager.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/FontManager.hpp b/dviware/dvisvgm/src/FontManager.hpp new file mode 100644 index 0000000000..4405f67ecd --- /dev/null +++ b/dviware/dvisvgm/src/FontManager.hpp @@ -0,0 +1,83 @@ +/************************************************************************* +** FontManager.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 FONTMANAGER_HPP +#define FONTMANAGER_HPP + +#include <memory> +#include <ostream> +#include <set> +#include <string> +#include <stack> +#include <unordered_map> +#include <vector> +#include "Color.hpp" +#include "FontStyle.hpp" + + +class FileFinder; +class Font; +class VirtualFont; + +/** This class provides methods for easy DVI font handling. + * DVI and VF files use local font numbers to reference fonts. For SVG output + * we need a single list with unique IDs of all physical fonts. Characters of + * virtual fonts are completely replaced by their DVI description so they don't + * appear anywhere in the output. */ +class FontManager +{ + using Num2IdMap = std::unordered_map<uint32_t,int>; + using Name2IdMap = std::unordered_map<std::string,int>; + using VfNum2IdMap = std::unordered_map<const VirtualFont*,Num2IdMap>; + using VfFirstFontMap = std::unordered_map<const VirtualFont*,uint32_t>; + using VfStack = std::stack<VirtualFont*>; + + public: + static FontManager& instance (); + int registerFont (uint32_t fontnum, const std::string &fontname, uint32_t checksum, double dsize, double scale); + int registerFont (uint32_t fontnum, const std::string &fname, double ptsize, const FontStyle &style, Color color); + int registerFont (uint32_t fontnum, std::string fname, int fontIndex, double ptsize, const FontStyle &style, Color color); + Font* getFont (int n) const; + Font* getFont (const std::string &name) const; + Font* getFontById (int id) const; + const VirtualFont* getVF () const; + int fontID (int n) const; + int fontID (const Font *font) const; + int fontID (const std::string &name) const; + int fontnum (int id) const; + int vfFirstFontNum (const VirtualFont *vf) const; + void enterVF (VirtualFont *vf); + void leaveVF (); + void assignVFChar (int c, std::vector<uint8_t> &&dvi); + std::ostream& write (std::ostream &os, Font *font=nullptr, int level=0); + + protected: + FontManager () =default; + + private: + std::vector<std::unique_ptr<Font>> _fonts; ///< all registered Fonts + Num2IdMap _num2id; ///< DVI font number -> fontID + Name2IdMap _name2id; ///< fontname -> fontID + VfNum2IdMap _vfnum2id; + VfStack _vfStack; ///< stack of currently processed virtual fonts + VfFirstFontMap _vfFirstFontMap; ///< VF -> local font number of first font defined in VF +}; + +#endif |