#include "toonz/columnfan.h"

// TnzCore includes

#include "tstream.h"

// STD includss

#include <assert.h></assert.h>

//=============================================================================

const int colWidth = 74;

const int colSkip  = 9;

//=============================================================================

// ColumnFan

ColumnFan::ColumnFan() : m_firstFreePos(0) {}

//-----------------------------------------------------------------------------

void ColumnFan::update() {

  int lastPos     = -colWidth;

  bool lastActive = true;

  int m           = m_columns.size();

  int i;

  for (i = 0; i < m; i++) {

    bool active = m_columns[i].m_active;

    if (lastActive)

      lastPos += colWidth;

    else if (active)

      lastPos += colSkip;

    m_columns[i].m_pos = lastPos;

    lastActive         = active;

  }

  m_firstFreePos = lastPos + (lastActive ? colWidth : colSkip);

  m_table.clear();

  for (i = 0; i < m; i++)

    if (m_columns[i].m_active)

      m_table[m_columns[i].m_pos + colWidth - 1] = i;

    else if (i + 1 < m && m_columns[i + 1].m_active)

      m_table[m_columns[i + 1].m_pos - 1] = i;

    else if (i + 1 == m)

      m_table[m_firstFreePos - 1] = i;

}

//-----------------------------------------------------------------------------

int ColumnFan::xToCol(int x) const {

  if (x < m_firstFreePos) {

    std::map<int, int="">::const_iterator it = m_table.lower_bound(x);</int,>

    if (it == m_table.end()) return -3;

    assert(it != m_table.end());

    return it->second;

  } else

    return m_columns.size() + (x - m_firstFreePos) / colWidth;

}

//-----------------------------------------------------------------------------

int ColumnFan::colToX(int col) const {

  int m = m_columns.size();

  if (col >= 0 && col < m)

    return m_columns[col].m_pos;

  else

    return m_firstFreePos + (col - m) * colWidth;

}

//-----------------------------------------------------------------------------

void ColumnFan::activate(int col) {

  int m = m_columns.size();

  if (col < m) {

    m_columns[col].m_active = true;

    int i;

    for (i = m - 1; i >= 0 && m_columns[i].m_active; i--) {

    }

    i++;

    if (i < m) {

      m = i;

      m_columns.erase(m_columns.begin() + i, m_columns.end());

    }

  }

  update();

}

//-----------------------------------------------------------------------------

void ColumnFan::deactivate(int col) {

  while ((int)m_columns.size() <= col) m_columns.push_back(Column());

  m_columns[col].m_active = false;

  update();

}

//-----------------------------------------------------------------------------

bool ColumnFan::isActive(int col) const {

  return 0 <= col && col < (int)m_columns.size() ? m_columns[col].m_active

                                                 : true;

}

//-----------------------------------------------------------------------------

bool ColumnFan::isEmpty() const { return m_columns.empty(); }

//-----------------------------------------------------------------------------

void ColumnFan::saveData(TOStream &os) {

  int index, n = (int)m_columns.size();

  for (index = 0; index < n;) {

    while (index < n && m_columns[index].m_active) index++;

    if (index < n) {

      int firstIndex = index;

      os << index;

      index++;

      while (index < n && !m_columns[index].m_active) index++;

      os << index - firstIndex;

    }

  }

}

//-----------------------------------------------------------------------------

void ColumnFan::loadData(TIStream &is) {

  m_columns.clear();

  m_table.clear();

  m_firstFreePos = 0;

  while (!is.eos()) {

    int index = 0, count = 0;

    is >> index >> count;

    int j;

    for (j = 0; j < count; j++) deactivate(index + j);

  }

}