/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */

/* libwpd

 * Version: MPL 2.0 / LGPLv2.1+

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * Major Contributor(s):

 * Copyright (C) 2002 William Lachance (wrlach@gmail.com)

 * Copyright (C) 2002 Marc Maurer (uwog@uwog.net)

 *

 * 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 2.1 or later

 * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are

 * applicable instead of those above.

 *

 * For further information visit http://libwpd.sourceforge.net

 */

/* "This product is not manufactured, approved, or supported by

 * Corel Corporation or Corel Corporation Limited."

 */

#include "WP6ColumnGroup.h"

#include "WP6Listener.h"

#include "libwpd_internal.h"

#include "WP6FileStructure.h"

#include "WPXFileStructure.h"

WP6ColumnGroup::WP6ColumnGroup(librevenge::RVNGInputStream *input, WPXEncryption *encryption) :

  WP6VariableLengthGroup(),

  m_margin(0),

  m_colType(0),

  m_numColumns(0),

  m_rowSpacing(0.0),

  m_isFixedWidth(),

  m_columnWidth()

{

  _read(input, encryption);

}

void WP6ColumnGroup::_readContents(librevenge::RVNGInputStream *input, WPXEncryption *encryption)

{

  // this group can contain different kinds of data, thus we need to read

  // the contents accordingly

  switch (getSubGroup())

  {

  case 0: // Left Margin Set

  case 1: // Right Margin Set

  {

    m_margin = readU16(input, encryption);

    WPD_DEBUG_MSG(("WordPerfect: Read column group margin size (margin: %i)\n", m_margin));

  }

  break;

  case 2:

  {

    m_colType = readU8(input, encryption);

    unsigned tmpRowSpacing = readU32(input, encryption);

    auto tmpRowSpacingIntegerPart = (signed short)((tmpRowSpacing & 0xffff0000) >> 16);

    auto tmpRowSpacingFractionalPart = (double)((double)(tmpRowSpacing & 0xffff)/(double)0x10000);

    m_rowSpacing = (double)tmpRowSpacingIntegerPart + tmpRowSpacingFractionalPart;

    m_numColumns = readU8(input, encryption);

    if (m_numColumns > 1)

    {

      unsigned short tmpWidth;

      unsigned char tmpDefinition;

      for (int i=0; i<((2*m_numColumns)-1); i++)

      {

        tmpDefinition = readU8(input, encryption);

        tmpWidth = readU16(input, encryption);

        if ((tmpDefinition & 0x01) == 0x01)

        {

          m_isFixedWidth.push_back(true);

          m_columnWidth.push_back((double)((double)tmpWidth/(double)WPX_NUM_WPUS_PER_INCH));

        }

        else

        {

          m_isFixedWidth.push_back(false);

          m_columnWidth.push_back((double)((double)tmpWidth/(double)0x10000));

        }

      }

    }

    WPD_DEBUG_MSG(("WordPerfect: Column type: %d\n", m_colType & 0x03));

    WPD_DEBUG_MSG(("WordPerfect: Numer of columns: %d\n", m_numColumns));

  }

  break;

  case 3: /* TODO: Column Border */

  {

  }

  break;

  default: /* something else we don't support, since it isn't in the docs */

    break;

  }

}

void WP6ColumnGroup::parse(WP6Listener *listener)

{

  WPD_DEBUG_MSG(("WordPerfect: handling a Column group\n"));

  if (getFlags() & 0x40)  // Ignore function flag

    return;

  switch (getSubGroup())

  {

  case 0: // Left Margin Set

  {

    listener->marginChange(WPX_LEFT, m_margin);

  }

  break;

  case 1: // Right Margin Set

  {

    listener->marginChange(WPX_RIGHT, m_margin);

  }

  break;

  case 2: // Define Text Columns

  {

    // number of columns = {0,1} means columns off

    if ((m_numColumns == 0) || (m_numColumns == 1))

    {

      listener->columnChange(NEWSPAPER, 1, m_columnWidth, m_isFixedWidth); // the value "1" is bugus, the false bool gives you all the information you need here

    }

    else

    {

      switch (m_colType & 0x03)

      {

      case WP6_COLUMN_TYPE_NEWSPAPER:

        listener->columnChange(NEWSPAPER, m_numColumns, m_columnWidth, m_isFixedWidth);

        break;

      case WP6_COLUMN_TYPE_NEWSPAPER_VERTICAL_BALANCE:

        listener->columnChange(NEWSPAPER_VERTICAL_BALANCE, m_numColumns, m_columnWidth, m_isFixedWidth);

        break;

      case WP6_COLUMN_TYPE_PARALLEL:

        listener->columnChange(PARALLEL, m_numColumns, m_columnWidth, m_isFixedWidth);

        break;

      case WP6_COLUMN_TYPE_PARALLEL_PROTECT:

        listener->columnChange(PARALLEL_PROTECT, m_numColumns, m_columnWidth, m_isFixedWidth);

        break;

      default: // something else we don't support, since it isn't in the docs

        break;

      }

    }

  }

  break;

  case 3: // TODO: Column Border

  {

  }

  break;

  default: // something else we don't support, since it isn't in the docs

    break;

  }

}

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