CanvasGraph.hxx

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/* -*- Mode: C++; c-default-style: "k&r"; indent-tabs-mode: nil; tab-width: 2; c-basic-offset: 2 -*- */
 
/* libmwaw
* Version: MPL 2.0 / LGPLv2+
*
* The contents of this file are subject to the Mozilla Public License Version
* 2.0 (the "License"); you may not use this file except in compliance with
* the License or as specified alternatively below. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Major Contributor(s):
* Copyright (C) 2002 William Lachance (wrlach@gmail.com)
* Copyright (C) 2002,2004 Marc Maurer (uwog@uwog.net)
* Copyright (C) 2004-2006 Fridrich Strba (fridrich.strba@bluewin.ch)
* Copyright (C) 2006, 2007 Andrew Ziem
* Copyright (C) 2011, 2012 Alonso Laurent (alonso@loria.fr)
*
*
* All Rights Reserved.
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
* in which case the provisions of the LGPLv2+ are applicable
* instead of those above.
*/
 
/*
 * Parser to Canvas text document ( graphic part )
 *
 */
#ifndef CANVAS_GRAPH
#  define CANVAS_GRAPH
 
#include <string>
#include <vector>
 
#include <librevenge/librevenge.h>
 
#include "libmwaw_internal.hxx"
 
#include "MWAWDebug.hxx"
#include "MWAWGraphicStyle.hxx"
#include "MWAWInputStream.hxx"
#include "MWAWPosition.hxx"
 
namespace CanvasGraphInternal
{
struct LocalTransform;
struct Shape;
struct State;
 
class SubDocument;
}
 
class CanvasParser;
class CanvasStyleManager;

class CanvasGraph
{
  friend class CanvasGraphInternal::SubDocument;
  friend class CanvasParser;
 
public:
  explicit CanvasGraph(CanvasParser &parser);
  virtual ~CanvasGraph();

  int version() const;
 
protected:
  void setInput(MWAWInputStreamPtr &input);
  MWAWInputStreamPtr &getInput();
 
  // interface with main parser

  bool sendShape(int id);
 
  //
  // Intermediate level
  //

  bool readShapes(int numShapes, unsigned long shapeLength, unsigned long dataLength);
  bool readShape(int n, std::vector<MWAWEntry> const &dataZonesList);
  bool readShapeData(CanvasGraphInternal::Shape &shape);

  bool getBitmapBW(CanvasGraphInternal::Shape const &shape, MWAWEmbeddedObject &obj);
  bool getBitmap(CanvasGraphInternal::Shape const &shape, MWAWEmbeddedObject &obj);
  bool readFileBitmap(long length);
  bool getPicture(CanvasGraphInternal::Shape const &shape, MWAWEmbeddedObject &obj);
 
  //
  // send data to the listener
  //

  void update(CanvasGraphInternal::Shape const &shape, MWAWGraphicStyle &style) const;
  bool send(CanvasGraphInternal::Shape const &shape, CanvasGraphInternal::LocalTransform const *local=nullptr, int depth=0);
  bool sendDimension(CanvasGraphInternal::Shape const &shape, CanvasGraphInternal::LocalTransform const &local);
  bool sendMultiLines(CanvasGraphInternal::Shape const &shape, CanvasGraphInternal::LocalTransform const &local);
  bool sendSpecial(CanvasGraphInternal::Shape const &shape, CanvasGraphInternal::LocalTransform const &local);
  bool sendText(CanvasGraphInternal::Shape const &shape);
  bool sendText(int zId);
 
  //
  // Low level
  //

  void markSent(int id);
  void checkUnsent() const;
 
private:
  CanvasGraph(CanvasGraph const &orig) = delete;
  CanvasGraph &operator=(CanvasGraph const &orig) = delete;
 
protected:
  //
  // data
  //
  MWAWParserStatePtr m_parserState;

  std::shared_ptr<CanvasGraphInternal::State> m_state;

  CanvasParser *m_mainParser;
  std::shared_ptr<CanvasStyleManager> m_styleManager;
};
#endif
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