selection.cpp

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#include "selection.h"
#include <QtGui/qpainter.h>
#include <fstream>
#include <iostream>
#include <ostream>
#include "shape.h"
#include "rectangle.h"

Selection::Selection()
{
  // prevent dangling pointers
  m_shape = NULL;
}

Selection::~Selection()
{
}

Shape* Selection::AllocateShape(SHAPE_TYPE type)
{
  Shape *f;
  switch (type) {
  case RECTANGLE :
    f =  new Rectangle();
    break;
    
  default:
    f =  NULL;
    break;
  }
  return f;
}

void Selection::HandleNewShape(Shape* s)
{
  if (m_shape) {
    delete m_shape;
    m_shape = 0;
  }
  m_shape = s;
}

Shape* Selection::GetShape()
{
  if (m_shape) {
    return m_shape;
  } else {
    return NULL;
  }
}


double Selection::SumValues(Image* pData)
{

  double s = 0;
  if (m_shape) {
    s = m_shape->SumValues(pData);
  }
  return s;
}

void Selection::Draw(QPainter* p, int fact)
{
  if (m_shape) {
    m_shape->Draw(p,fact);
  }
}

double Selection::GetSurface()
{
  double size = 0;
  if (m_shape) {
    size = m_shape->GetSurface();
  }
  return size;
}

bool Selection::Save(std::ofstream& f)
{
  return false;
}

bool Selection::Read(std::ifstream& f)
{
  return false;
}

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