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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/SpecialManager.hpp
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+/*************************************************************************
+** SpecialManager.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 SPECIALMANAGER_HPP
+#define SPECIALMANAGER_HPP
+
+#include <memory>
+#include <ostream>
+#include <string>
+#include <unordered_map>
+#include <vector>
+#include "SpecialHandler.hpp"
+
+class SpecialActions;
+
+class SpecialManager {
+ private:
+ using HandlerPool = std::vector<std::unique_ptr<SpecialHandler>>;
+ using HandlerMap = std::unordered_map<std::string,SpecialHandler*>;
+
+ public:
+ SpecialManager (const SpecialManager &) =delete;
+ static SpecialManager& instance ();
+ void registerHandler (std::unique_ptr<SpecialHandler> handler);
+ void registerHandlers (std::vector<std::unique_ptr<SpecialHandler>> &handlers, const char *ignorelist);
+ void unregisterHandlers ();
+ void preprocess (const std::string &special, SpecialActions &actions) const;
+ bool process (const std::string &special, double dvi2bp, SpecialActions &actions) const;
+ void notifyPreprocessingFinished () const;
+ void notifyBeginPage (unsigned pageno, SpecialActions &actions) const;
+ void notifyEndPage (unsigned pageno, SpecialActions &actions) const;
+ void notifyPositionChange (double x, double y, SpecialActions &actions) const;
+ void writeHandlerInfo (std::ostream &os) const;
+ SpecialHandler* findHandlerByName (const std::string &name) const;
+
+ protected:
+ SpecialManager () =default;
+ SpecialHandler* findHandlerByPrefix (const std::string &prefix) const;
+
+ private:
+ HandlerPool _handlerPool; ///< stores pointers to all handlers
+ HandlerMap _handlersByPrefix; ///< pointers to handlers for corresponding prefixes
+};
+
+#endif