/** * @file llkeyboard.h * @brief Handler for assignable key bindings * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLKEYBOARD_H #define LL_LLKEYBOARD_H #include <map> #include <boost/function.hpp> #include "llstringtable.h" #include "lltimer.h" #include "indra_constants.h" enum EKeystate { KEYSTATE_DOWN, KEYSTATE_LEVEL, KEYSTATE_UP }; typedef boost::function<bool(EKeystate keystate)> LLKeyFunc; typedef std::string (LLKeyStringTranslatorFunc)(const char *label); enum EKeyboardInsertMode { LL_KIM_INSERT, LL_KIM_OVERWRITE }; class LLWindowCallbacks; class LLKeyboard { public: LLKeyboard(); virtual ~LLKeyboard(); void resetKeys(); F32 getCurKeyElapsedTime() { return getKeyDown(mCurScanKey) ? getKeyElapsedTime( mCurScanKey ) : 0.f; } F32 getCurKeyElapsedFrameCount() { return getKeyDown(mCurScanKey) ? (F32)getKeyElapsedFrameCount( mCurScanKey ) : 0.f; } BOOL getKeyDown(const KEY key) { return mKeyLevel[key]; } BOOL getKeyRepeated(const KEY key) { return mKeyRepeated[key]; } BOOL translateKey(const U16 os_key, KEY *translated_key); U16 inverseTranslateKey(const KEY translated_key); BOOL handleTranslatedKeyUp(KEY translated_key, U32 translated_mask); // Translated into "Linden" keycodes BOOL handleTranslatedKeyDown(KEY translated_key, U32 translated_mask); // Translated into "Linden" keycodes virtual BOOL handleKeyUp(const U16 key, MASK mask) = 0; virtual BOOL handleKeyDown(const U16 key, MASK mask) = 0; #ifdef LL_DARWIN // We only actually use this for OS X. virtual void handleModifier(MASK mask) = 0; #endif // LL_DARWIN // Asynchronously poll the control, alt, and shift keys and set the // appropriate internal key masks. virtual void resetMaskKeys() = 0; virtual void scanKeyboard() = 0; // scans keyboard, calls functions as necessary // Mac must differentiate between Command = Control for keyboard events // and Command != Control for mouse events. virtual MASK currentMask(BOOL for_mouse_event) = 0; virtual KEY currentKey() { return mCurTranslatedKey; } EKeyboardInsertMode getInsertMode() { return mInsertMode; } void toggleInsertMode(); static BOOL maskFromString(const std::string& str, MASK *mask); // False on failure static BOOL keyFromString(const std::string& str, KEY *key); // False on failure static std::string stringFromKey(KEY key, bool translate = true); static std::string stringFromAccelerator( MASK accel_mask ); // separated for convinience, returns with "+": "Shift+" or "Shift+Alt+"... static std::string stringFromAccelerator( MASK accel_mask, KEY key ); void setCallbacks(LLWindowCallbacks *cbs) { mCallbacks = cbs; } F32 getKeyElapsedTime( KEY key ); // Returns time in seconds since key was pressed. S32 getKeyElapsedFrameCount( KEY key ); // Returns time in frames since key was pressed. static void setStringTranslatorFunc( LLKeyStringTranslatorFunc *trans_func ); protected: void addKeyName(KEY key, const std::string& name); protected: std::map<U16, KEY> mTranslateKeyMap; // Map of translations from OS keys to Linden KEYs std::map<KEY, U16> mInvTranslateKeyMap; // Map of translations from Linden KEYs to OS keys LLWindowCallbacks *mCallbacks; LLTimer mKeyLevelTimer[KEY_COUNT]; // Time since level was set S32 mKeyLevelFrameCount[KEY_COUNT]; // Frames since level was set BOOL mKeyLevel[KEY_COUNT]; // Levels BOOL mKeyRepeated[KEY_COUNT]; // Key was repeated BOOL mKeyUp[KEY_COUNT]; // Up edge BOOL mKeyDown[KEY_COUNT]; // Down edge KEY mCurTranslatedKey; KEY mCurScanKey; // Used during the scanKeyboard() static LLKeyStringTranslatorFunc* mStringTranslator; // Used for l10n + PC/Mac/Linux accelerator labeling EKeyboardInsertMode mInsertMode; static std::map<KEY,std::string> sKeysToNames; static std::map<std::string,KEY> sNamesToKeys; }; extern LLKeyboard *gKeyboard; #endif