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/HyperlinkManager.hpp |
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/HyperlinkManager.hpp')
-rw-r--r-- | dviware/dvisvgm/src/HyperlinkManager.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/HyperlinkManager.hpp b/dviware/dvisvgm/src/HyperlinkManager.hpp new file mode 100644 index 0000000000..7f5a460bdb --- /dev/null +++ b/dviware/dvisvgm/src/HyperlinkManager.hpp @@ -0,0 +1,79 @@ +/************************************************************************* +** HyperlinkManager.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 HYPERLINKMANAGER_HPP +#define HYPERLINKMANAGER_HPP + +#include <string> +#include <unordered_map> +#include "Color.hpp" +#include "SpecialActions.hpp" + +class SpecialActions; + +class HyperlinkManager { + struct NamedAnchor { + NamedAnchor () : pageno(0), id(0), pos(0), referenced(false) {} + NamedAnchor (unsigned pn, int i, double p, bool r=false) : pageno(pn), id(i), pos(p), referenced(r) {} + unsigned pageno; ///< page number where the anchor is located + int id; ///< unique numerical ID (< 0 if anchor is undefined yet) + double pos; ///< vertical position of named anchor (in PS point units) + bool referenced; ///< true if a reference to this anchor exists + }; + + enum class AnchorType {NONE, HREF, NAME}; + enum class ColorSource {DEFAULT, LINKMARKER, STATIC}; + using NamedAnchors = std::unordered_map<std::string, NamedAnchor>; + + public: + HyperlinkManager (const HyperlinkManager&) =delete; + HyperlinkManager (HyperlinkManager&&) =delete; + void addHrefAnchor (const std::string &uri); + void addNameAchor (const std::string &name, int pageno); + void setActiveNameAnchor (const std::string &name, SpecialActions &actions); + void closeAnchor (SpecialActions &actions); + void checkNewLine (SpecialActions &actions); + void createLink (std::string uri, SpecialActions &actions); + void createViews (unsigned pageno, SpecialActions &actions); + void setBaseUrl (std::string &base) {_base = base;} + void setLineWidth (double w) {_linewidth = w;} + static HyperlinkManager& instance (); + static bool setLinkMarker (const std::string &marker); + static void setDefaultLinkColor (Color color); + + protected: + HyperlinkManager () : _anchorType(AnchorType::NONE), _depthThreshold(0), _linewidth(-1) {} + void markLinkedBox (SpecialActions &actions); + + enum class MarkerType {NONE, LINE, BOX, BGCOLOR}; + static MarkerType MARKER_TYPE; ///< selects how to mark linked areas + static Color LINK_BGCOLOR; ///< background color if linkmark type == LT_BGCOLOR + static Color LINK_LINECOLOR; ///< line color if linkmark type is LM_LINE or LM_BOX + static ColorSource COLORSOURCE; ///< if true, LINK_LINECOLOR is applied + + private: + AnchorType _anchorType; ///< type of active anchor + int _depthThreshold; ///< break anchor box if the DVI stack depth underruns this threshold + double _linewidth; ///< line width of link marker (-1 => compute individual value per link) + std::string _base; ///< base URL that is prepended to all relative targets + NamedAnchors _namedAnchors; ///< information about all named anchors processed +}; + +#endif |