llkeyboard.cpp

Go to the documentation of this file.

#include "linden_common.h"
#include "indra_constants.h"
#include "llkeyboard.h"

#include "llwindow.h"


//
// Globals
//

LLKeyboard *gKeyboard = NULL;

//static
std::map<KEY,LLString> LLKeyboard::sKeysToNames;
std::map<LLString,KEY> LLKeyboard::sNamesToKeys;

//
// Class Implementation
//

LLKeyboard::LLKeyboard() : mCallbacks(NULL), mNumpadDistinct(ND_NUMLOCK_OFF)
{
        S32 i;

        // Constructor for LLTimer inits each timer. We want them to
        // be constructed without being initialized, so we shut them down here.
        for (i = 0; i < KEY_COUNT; i++)
        {
                mKeyLevelFrameCount[i] = 0;
                mKeyLevel[i] = FALSE;
                mKeyUp[i]    = FALSE;
                mKeyDown[i]  = FALSE;
                mKeyRepeated[i] = FALSE;
        }

        mInsertMode = LL_KIM_INSERT;
        mCurTranslatedKey = KEY_NONE;

        addKeyName(' ', "Space" );
        addKeyName(KEY_RETURN, "Enter" );
        addKeyName(KEY_LEFT, "Left" );
        addKeyName(KEY_RIGHT, "Right" );
        addKeyName(KEY_UP, "Up" );
        addKeyName(KEY_DOWN, "Down" );
        addKeyName(KEY_ESCAPE, "Esc" );
        addKeyName(KEY_HOME, "Home" );
        addKeyName(KEY_END, "End" );
        addKeyName(KEY_PAGE_UP, "PgUp" );
        addKeyName(KEY_PAGE_DOWN, "PgDn" );
        addKeyName(KEY_F1, "F1" );
        addKeyName(KEY_F2, "F2" );
        addKeyName(KEY_F3, "F3" );
        addKeyName(KEY_F4, "F4" );
        addKeyName(KEY_F5, "F5" );
        addKeyName(KEY_F6, "F6" );
        addKeyName(KEY_F7, "F7" );
        addKeyName(KEY_F8, "F8" );
        addKeyName(KEY_F9, "F9" );
        addKeyName(KEY_F10, "F10" );
        addKeyName(KEY_F11, "F11" );
        addKeyName(KEY_F12, "F12" );
        addKeyName(KEY_TAB, "Tab" );
        addKeyName(KEY_ADD, "Add" );
        addKeyName(KEY_SUBTRACT, "Subtract" );
        addKeyName(KEY_MULTIPLY, "Multiply" );
        addKeyName(KEY_DIVIDE, "Divide" );
        addKeyName(KEY_PAD_DIVIDE, "PAD_DIVIDE" );
        addKeyName(KEY_PAD_LEFT, "PAD_LEFT" );
        addKeyName(KEY_PAD_RIGHT, "PAD_RIGHT" );
        addKeyName(KEY_PAD_DOWN, "PAD_DOWN" );
        addKeyName(KEY_PAD_UP, "PAD_UP" );
        addKeyName(KEY_PAD_HOME, "PAD_HOME" );
        addKeyName(KEY_PAD_END, "PAD_END" );
        addKeyName(KEY_PAD_PGUP, "PAD_PGUP" );
        addKeyName(KEY_PAD_PGDN, "PAD_PGDN" );
        addKeyName(KEY_PAD_CENTER, "PAD_CENTER" );
        addKeyName(KEY_PAD_INS, "PAD_INS" );
        addKeyName(KEY_PAD_DEL, "PAD_DEL" );
        addKeyName(KEY_PAD_RETURN, "PAD_Enter" );
        addKeyName(KEY_BUTTON0, "PAD_BUTTON0" );
        addKeyName(KEY_BUTTON1, "PAD_BUTTON1" );
        addKeyName(KEY_BUTTON2, "PAD_BUTTON2" );
        addKeyName(KEY_BUTTON3, "PAD_BUTTON3" );
        addKeyName(KEY_BUTTON4, "PAD_BUTTON4" );
        addKeyName(KEY_BUTTON5, "PAD_BUTTON5" );
        addKeyName(KEY_BUTTON6, "PAD_BUTTON6" );
        addKeyName(KEY_BUTTON7, "PAD_BUTTON7" );
        addKeyName(KEY_BUTTON8, "PAD_BUTTON8" );
        addKeyName(KEY_BUTTON9, "PAD_BUTTON9" );
        addKeyName(KEY_BUTTON10, "PAD_BUTTON10" );
        addKeyName(KEY_BUTTON11, "PAD_BUTTON11" );
        addKeyName(KEY_BUTTON12, "PAD_BUTTON12" );
        addKeyName(KEY_BUTTON13, "PAD_BUTTON13" );
        addKeyName(KEY_BUTTON14, "PAD_BUTTON14" );
        addKeyName(KEY_BUTTON15, "PAD_BUTTON15" );
        
        addKeyName(KEY_BACKSPACE, "Backsp" );
        addKeyName(KEY_DELETE, "Del" );
        addKeyName(KEY_SHIFT, "Shift" );
        addKeyName(KEY_CONTROL, "Ctrl" );
        addKeyName(KEY_ALT, "Alt" );
        addKeyName(KEY_HYPHEN, "-" );
        addKeyName(KEY_EQUALS, "=" );
        addKeyName(KEY_INSERT, "Ins" );
        addKeyName(KEY_CAPSLOCK, "CapsLock" );
}


LLKeyboard::~LLKeyboard()
{
        // nothing
}

void LLKeyboard::addKeyName(KEY key, const LLString& name)
{
        sKeysToNames[key] = name;
        LLString nameuc = name;
        LLString::toUpper(nameuc);
        sNamesToKeys[nameuc] = key;
}

// BUG this has to be called when an OS dialog is shown, otherwise modifier key state
// is wrong because the keyup event is never received by the main window. JC
void LLKeyboard::resetKeys()
{
        S32 i;

        for (i = 0; i < KEY_COUNT; i++)
        {
                if( mKeyLevel[i] )
                {
                        mKeyLevel[i] = FALSE;
                }
        }

        for (i = 0; i < KEY_COUNT; i++)
        {
                mKeyUp[i] = FALSE;
        }

        for (i = 0; i < KEY_COUNT; i++)
        {
                mKeyDown[i] = FALSE;
        }

        for (i = 0; i < KEY_COUNT; i++)
        {
                mKeyRepeated[i] = FALSE;
        }
}


BOOL LLKeyboard::translateKey(const U16 os_key, KEY *out_key)
{
        std::map<U16, KEY>::iterator iter;

        // Only translate keys in the map, ignore all other keys for now
        iter = mTranslateKeyMap.find(os_key);
        if (iter == mTranslateKeyMap.end())
        {
                //llwarns << "Unknown virtual key " << os_key << llendl;
                *out_key = 0;
                return FALSE;
        }
        else
        {
                *out_key = iter->second;
                return TRUE;
        }
}


U16 LLKeyboard::inverseTranslateKey(const KEY translated_key)
{
        std::map<KEY, U16>::iterator iter;
        iter = mInvTranslateKeyMap.find(translated_key);
        if (iter == mInvTranslateKeyMap.end())
        {
                return 0;
        }
        else
        {
                return iter->second;
        }
}


BOOL LLKeyboard::handleTranslatedKeyDown(KEY translated_key, U32 translated_mask)
{
        BOOL handled = FALSE;
        BOOL repeated = FALSE;

        // is this the first time the key went down?
        // if so, generate "character" message
        if( !mKeyLevel[translated_key] )
        {
                mKeyLevel[translated_key] = TRUE;
                mKeyLevelTimer[translated_key].reset();
                mKeyLevelFrameCount[translated_key] = 0;
                mKeyRepeated[translated_key] = FALSE;
        }
        else
        {
                // Level is already down, assume it's repeated.
                repeated = TRUE;
                mKeyRepeated[translated_key] = TRUE;
        }
        
        mKeyDown[translated_key] = TRUE;
        mCurTranslatedKey = (KEY)translated_key;
        handled = mCallbacks->handleTranslatedKeyDown(translated_key, translated_mask, repeated);
        return handled;
}


BOOL LLKeyboard::handleTranslatedKeyUp(KEY translated_key, U32 translated_mask)
{       
        BOOL handled = FALSE;
        if( mKeyLevel[translated_key] )
        {
                mKeyLevel[translated_key] = FALSE;
                
                // Only generate key up events if the key is thought to
                // be down.  This allows you to call resetKeys() in the
                // middle of a frame and ignore subsequent KEY_UP
                // messages in the same frame.  This was causing the
                // sequence W<return> in chat to move agents forward. JC
                mKeyUp[translated_key] = TRUE;
                handled = mCallbacks->handleTranslatedKeyUp(translated_key, translated_mask);
        }
        
        lldebugst(LLERR_USER_INPUT) << "keyup -" << translated_key << "-" << llendl;

        return handled;
}


void LLKeyboard::toggleInsertMode()
{
        if (LL_KIM_INSERT == mInsertMode)
        {
                mInsertMode = LL_KIM_OVERWRITE;
        }
        else
        {
                mInsertMode = LL_KIM_INSERT;
        }
}


// Returns time in seconds since key was pressed.
F32 LLKeyboard::getKeyElapsedTime(KEY key)
{
        return mKeyLevelTimer[key].getElapsedTimeF32();
}

// Returns time in frames since key was pressed.
S32 LLKeyboard::getKeyElapsedFrameCount(KEY key)
{
        return mKeyLevelFrameCount[key];
}

// static
BOOL LLKeyboard::keyFromString(const LLString& str, KEY *key)
{
        LLString instring(str);
        size_t length = instring.size();

        if (length < 1)
        {
                return FALSE;
        }
        if (length == 1)
        {
                char ch = toupper(instring[0]);
                if (('0' <= ch && ch <= '9') ||
                        ('A' <= ch && ch <= 'Z') ||
                        ('!' <= ch && ch <= '/') || // !"#$%&'()*+,-./
                        (':' <= ch && ch <= '@') || // :;<=>?@
                        ('[' <= ch && ch <= '`') || // [\]^_`
                        ('{' <= ch && ch <= '~'))   // {|}~
                {
                        *key = ch;
                        return TRUE;
                }
        }

        LLString::toUpper(instring);
        KEY res = get_if_there(sNamesToKeys, instring, (KEY)0);
        if (res != 0)
        {
                *key = res;
                return TRUE;
        }
        llwarns << "keyFromString failed: " << str << llendl;
        return FALSE;
}


// static
LLString LLKeyboard::stringFromKey(KEY key)
{
        LLString res = get_if_there(sKeysToNames, key, LLString::null);
        if (res.empty())
        {
                char buffer[2];         /* Flawfinder: ignore */
                buffer[0] = key;
                buffer[1] = '\0';
                res = LLString(buffer);
        }
        return res;
}



//static
BOOL LLKeyboard::maskFromString(const LLString& str, MASK *mask)
{
        LLString instring(str);
        if (instring == "NONE")
        {
                *mask = MASK_NONE;
                return TRUE;
        }
        else if (instring == "SHIFT")
        {
                *mask = MASK_SHIFT;
                return TRUE;
        }
        else if (instring == "CTL")
        {
                *mask = MASK_CONTROL;
                return TRUE;
        }
        else if (instring == "ALT")
        {
                *mask = MASK_ALT;
                return TRUE;
        }
        else if (instring == "CTL_SHIFT")
        {
                *mask = MASK_CONTROL | MASK_SHIFT;
                return TRUE;
        }
        else if (instring == "ALT_SHIFT")
        {
                *mask = MASK_ALT | MASK_SHIFT;
                return TRUE;
        }
        else if (instring == "CTL_ALT")
        {
                *mask = MASK_CONTROL | MASK_ALT;
                return TRUE;
        }
        else if (instring == "CTL_ALT_SHIFT")
        {
                *mask = MASK_CONTROL | MASK_ALT | MASK_SHIFT;
                return TRUE;
        }
        else 
        {
                return FALSE;
        }
}

---