KeyMapper.cpp

00001 #include "kbd_mgr/KeyMapper.h"
00002 #include <algorithm>
00003 #include <functional>
00004 
00005 namespace kbd_mgr {
00006 
00007 void KeyMap::addMapping(KeyEvent::EventType event, int key, char ch)
00008 {
00009     const KeyMapping *mapping = getMapping(event, key);
00010     if (mapping) {
00011         KeyMapping *updatable = const_cast<KeyMapping*>(mapping);
00012         updatable->ch = ch;
00013     }
00014     else {
00015         KeyMapping o(event, key, ch);
00016         this->map_.push_back(o);
00017     }
00018 }
00019 
00020 void KeyMap::addMappings(KeyEvent::EventType event, const std::string &str)
00021 {
00022     for(int key = 0; key < str.size(); ++key) {
00023         addMapping(event, key, str[key]);
00024     }
00025 }
00026 
00027 char KeyMap::map(KeyEvent::EventType event, int key) const
00028 {
00029     const KeyMapping *mapping = getMapping(event, key);
00030     if (!mapping) {
00031         mapping = getMapping(KeyEvent::NoEvent, key);
00032     }
00033     return (mapping ? mapping->ch : '\0');
00034 }
00035 
00036 const KeyMap::KeyMapping * KeyMap::getMapping(KeyEvent::EventType event, int key) const
00037 {
00038     std::pair<KeyEvent::EventType, int> criteria = std::make_pair(event, key);
00039     Map::const_iterator p = this->map_.begin();
00040     while (p != this->map_.end() && !p->matches(criteria)) {
00041         ++p;
00042     }
00043     
00044     if (p == this->map_.end()) {
00045         return NULL;
00046     }
00047     return &(*p);
00048 }
00049 
00050 void KeyMapper::handleKeyPress(const KeyEvent &keypress)
00051 {
00052     char ch = map(keypress.event, keypress.keyCode);
00053     KeyEvent mapped(keypress, ch);
00054     invokeHandler(mapped);
00055 }
00056 
00057 } // kbd_mgr