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/**
* @file llkeyboard.h
* @brief Handler for assignable key bindings
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLKEYBOARD_H
#define LL_LLKEYBOARD_H
#include <map>
#include "string_table.h"
#include "lltimer.h"
#include "indra_constants.h"
enum EKeystate
{
KEYSTATE_DOWN,
KEYSTATE_LEVEL,
KEYSTATE_UP
};
typedef void (*LLKeyFunc)(EKeystate keystate);
enum EKeyboardInsertMode
{
LL_KIM_INSERT,
LL_KIM_OVERWRITE
};
class LLKeyBinding
{
public:
KEY mKey;
MASK mMask;
// const char *mName; // unused
LLKeyFunc mFunction;
};
class LLWindowCallbacks;
class LLKeyboard
{
public:
typedef enum e_numpad_distinct
{
ND_NEVER,
ND_NUMLOCK_OFF,
ND_NUMLOCK_ON
} ENumpadDistinct;
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;
// 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);
e_numpad_distinct getNumpadDistinct() { return mNumpadDistinct; }
void setNumpadDistinct(e_numpad_distinct val) { mNumpadDistinct = val; }
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.
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()
e_numpad_distinct mNumpadDistinct;
EKeyboardInsertMode mInsertMode;
static std::map<KEY,std::string> sKeysToNames;
static std::map<std::string,KEY> sNamesToKeys;
};
extern LLKeyboard *gKeyboard;
#endif
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