// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_sg_zb_manager
#define tools_sg_zb_manager

#include "render_manager"

#include <map>

namespace tools {
namespace sg {

class zb_manager : public virtual render_manager {
  typedef render_manager parent;
public:
  TOOLS_SCLASS(tools::sg::zb_manager)
  virtual void* cast(const std::string& a_class) const {
    if(void* p = cmp_cast<zb_manager>(this,a_class)) {return p;}
    else return 0;
  }
public:
  virtual bool begin_render(int,int,unsigned int,unsigned int,float,float,float,float,bool = true) {return true;}
  virtual void end_render() {}

  virtual unsigned int create_texture(const img_byte& a_img,bool /*a_NEAREST*/) {
    m_gen_id++; //never return 0.
    m_gstos[m_gen_id] = a_img;
    return m_gen_id;
  }

  virtual unsigned int create_gsto_from_data(size_t,const float*) {return 0;}

  virtual bool is_gsto_id_valid(unsigned int a_id) const {
    gstos_t::const_iterator it = m_gstos.find(a_id);
    if(it==m_gstos.end()) return false;
    return true;
  }
  virtual void delete_gsto(unsigned int a_id) {
    gstos_t::iterator it = m_gstos.find(a_id);
    if(it!=m_gstos.end()) m_gstos.erase(it);
  }

  //
  virtual gsto_mode get_gsto_mode() const {return gsto_memory;}
  virtual void set_gsto_mode(gsto_mode) {}
  virtual void available_gsto_modes(std::vector<std::string>& a_v) {a_v.clear();}
  virtual void available_not_memory_gsto_mode(std::string& a_s) const {a_s.clear();}
  virtual size_t used_texture_memory() const {return 0;}
  virtual size_t gstos_size() const {return 0;}
public:
  zb_manager():m_gen_id(0){
  }
  virtual ~zb_manager(){
    m_gstos.clear();
  }
public:
  zb_manager(const zb_manager& a_from)
  :parent(a_from)
  ,m_gen_id(0)
  ,m_gstos()
  {
  }
  zb_manager& operator=(const zb_manager& a_from){
    if(&a_from==this) return *this;
    m_gen_id = 0;
    m_gstos.clear();
    return *this;
  }
public:
  bool find(unsigned int a_id,img_byte& a_img) {
    gstos_t::iterator it = m_gstos.find(a_id);
    if(it==m_gstos.end()) return false;
    a_img = (*it).second;
    return true;
  }
  void delete_gstos() {m_gstos.clear();}
protected:
  unsigned int m_gen_id;
  typedef std::map<unsigned int,img_byte> gstos_t;
  gstos_t m_gstos; //only textures for the moment.
};

}}

#endif