source/input/keys.cpp

   1 #include <map>
   2 #include <stdexcept>
   3 #include "keys.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace Input {
   9
  10 extern unsigned sys_keymap[];
  11
  12 unsigned key_from_sys(unsigned code)
  13 {
  14         static bool init_done = false;
  15         static map<unsigned, unsigned> reverse_map;
  16
  17         if(!init_done)
  18         {
  19                 for(unsigned i=0; i<N_KEYS_; ++i)
  20                         if(sys_keymap[i])
  21                                 reverse_map[sys_keymap[i]] = i;
  22
  23                 init_done = true;
  24         }
  25
  26         map<unsigned, unsigned>::const_iterator i = reverse_map.find(code);
  27         if(i!=reverse_map.end())
  28                 return i->second;
  29
  30         return 0;
  31 }
  32
  33 unsigned key_to_sys(unsigned key)
  34 {
  35         if(key>=N_KEYS_)
  36                 throw invalid_argument("key_to_sys");
  37         return sys_keymap[key];
  38 }
  39
  40 } // namespace Input
  41 } // namespace Msp