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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include <cstring>
#include <SDL_keyboard.h>
#include <SDL_keysym.h>
#include <assert.h>
#include "KeyInput.h"
KeyInput* keyInput = NULL;
KeyInput* KeyInput::GetInstance() {
if (keyInput == NULL) {
keyInput = new KeyInput();
}
return keyInput;
}
void KeyInput::FreeInstance(KeyInput* keyInp) {
delete keyInp; keyInput = NULL;
}
KeyInput::KeyInput() {
keys.resize(SDLK_LAST, 0);
// Initialize keyboard
SDL_EnableUNICODE(1);
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
SDL_SetModState(KMOD_NONE);
}
/**
* Tests SDL keystates and sets values in key array
*/
void KeyInput::Update(boost::uint16_t currKeyUnicodeChar, boost::int8_t fakeMetaKey)
{
int numKeys = 0;
const SDLMod keyMods = SDL_GetModState();
const boost::uint8_t* keyStates = SDL_GetKeyState(&numKeys);
assert(numKeys <= SDLK_LAST);
memcpy(&keys[0], keyStates, sizeof(boost::uint8_t) * numKeys);
keys[SDLK_LALT] = (keyMods & KMOD_ALT) ? 1 : 0;
keys[SDLK_LCTRL] = (keyMods & KMOD_CTRL) ? 1 : 0;
keys[SDLK_LMETA] = (keyMods & KMOD_META) ? 1 : 0;
keys[SDLK_LSHIFT] = (keyMods & KMOD_SHIFT) ? 1 : 0;
if (fakeMetaKey >= 0) {
keys[SDLK_LMETA] |= keys[fakeMetaKey];
}
currentKeyUnicodeChar = currKeyUnicodeChar;
}
boost::uint16_t KeyInput::GetNormalizedKeySymbol(boost::uint16_t sym) const {
if (sym <= SDLK_DELETE) {
sym = tolower(sym);
}
else if (sym == SDLK_RSHIFT) { sym = SDLK_LSHIFT; }
else if (sym == SDLK_RCTRL) { sym = SDLK_LCTRL; }
else if (sym == SDLK_RMETA) { sym = SDLK_LMETA; }
else if (sym == SDLK_RALT) { sym = SDLK_LALT; }
return sym;
}
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