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/*************************************************************************
** SVGTree.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2024 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 SVGTREE_HPP
#define SVGTREE_HPP
#include <map>
#include <memory>
#include <set>
#include <stack>
#include <unordered_set>
#include "Color.hpp"
#include "FontWriter.hpp"
#include "GFGlyphTracer.hpp"
#include "Matrix.hpp"
#include "SVGCharHandler.hpp"
#include "SVGElement.hpp"
#include "XMLDocument.hpp"
class BoundingBox;
class Color;
class Font;
class Matrix;
class Opacity;
class PhysicalFont;
class SVGTree {
public:
SVGTree ();
void reset ();
bool write (std::ostream &os) const {return bool(_doc.write(os));}
void newPage (int pageno);
void appendToDefs (std::unique_ptr<XMLNode> node);
void appendToPage (std::unique_ptr<XMLNode> node);
void prependToPage (std::unique_ptr<XMLNode> node);
void appendToDoc (std::unique_ptr<XMLNode> node) {_doc.append(std::move(node));}
void appendToRoot (std::unique_ptr<XMLNode> node) {_root->append(std::move(node));}
void appendChar (int c, double x, double y) {_charHandler->appendChar(c, x, y);}
void appendFontStyles (const std::unordered_set<const Font*> &fonts);
void append (const PhysicalFont &font, const std::set<int> &chars, GFGlyphTracer::Callback *callback=nullptr);
void pushDefsContext (std::unique_ptr<SVGElement> node);
void popDefsContext ();
void pushPageContext (std::unique_ptr<SVGElement> node);
void popPageContext ();
void setBBox (const BoundingBox &bbox);
void setFont (int id, const Font &font);
std::pair<int,const Font*> getFontPair () const;
static bool setFontFormat (std::string formatstr);
void setX (double x) {_charHandler->notifyXAdjusted();}
void setY (double y) {_charHandler->notifyYAdjusted();}
void setMatrix (const Matrix &m) {_charHandler->setMatrix(m);}
void setColor (const Color &c);
void setOpacity (const Opacity &op) {_charHandler->setOpacity(op);}
void setVertical (bool state) {_charHandler->setVertical(state);}
void transformPage (const Matrix &m);
Color getColor () const {return _charHandler->getColor();}
const Opacity& getOpacity () const {return _charHandler->getOpacity();}
const Matrix& getMatrix () const {return _charHandler->getMatrix();}
XMLElement* rootNode () const {return _root;}
XMLElement* defsNode () const {return _defs;}
XMLElement* pageNode () const {return _page;}
protected:
XMLCData* styleCDataNode ();
public:
static bool USE_FONTS; ///< if true, create font references and don't draw paths directly
static bool CREATE_CSS; ///< define and use CSS classes to reference fonts?
static bool CREATE_USE_ELEMENTS; ///< allow generation of <use/> elements?
static FontWriter::FontFormat FONT_FORMAT; ///< format of fonts to be embedded
static bool RELATIVE_PATH_CMDS; ///< relative path commands rather than absolute ones?
static bool MERGE_CHARS; ///< whether to merge chars with common properties into the same <text> tag
static bool ADD_COMMENTS; ///< add comments with additional information
static double ZOOM_FACTOR; ///< factor applied to width/height attribute
private:
XMLDocument _doc;
SVGElement *_root=nullptr, *_page=nullptr, *_defs=nullptr;
XMLCData *_styleCDataNode=nullptr;
std::unique_ptr<SVGCharHandler> _charHandler;
std::stack<SVGElement*> _defsContextStack;
std::stack<SVGElement*> _pageContextStack;
};
#endif
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