llkeyboardsdl.cpp
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- /**
- * @file llkeyboardsdl.cpp
- * @brief Handler for assignable key bindings
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, 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.
- * $/LicenseInfo$
- */
- #if LL_SDL
- #include "linden_common.h"
- #include "llkeyboardsdl.h"
- #include "llwindowcallbacks.h"
- #include "SDL/SDL.h"
- LLKeyboardSDL::LLKeyboardSDL()
- {
- // Set up key mapping for SDL - eventually can read this from a file?
- // Anything not in the key map gets dropped
- // Add default A-Z
- // Virtual key mappings from SDL_keysym.h ...
- // SDL maps the letter keys to the ASCII you'd expect, but it's lowercase...
- U16 cur_char;
- for (cur_char = 'A'; cur_char <= 'Z'; cur_char++)
- {
- mTranslateKeyMap[cur_char] = cur_char;
- }
- for (cur_char = 'a'; cur_char <= 'z'; cur_char++)
- {
- mTranslateKeyMap[cur_char] = (cur_char - 'a') + 'A';
- }
- for (cur_char = '0'; cur_char <= '9'; cur_char++)
- {
- mTranslateKeyMap[cur_char] = cur_char;
- }
- // These ones are translated manually upon keydown/keyup because
- // SDL doesn't handle their numlock transition.
- //mTranslateKeyMap[SDLK_KP4] = KEY_PAD_LEFT;
- //mTranslateKeyMap[SDLK_KP6] = KEY_PAD_RIGHT;
- //mTranslateKeyMap[SDLK_KP8] = KEY_PAD_UP;
- //mTranslateKeyMap[SDLK_KP2] = KEY_PAD_DOWN;
- //mTranslateKeyMap[SDLK_KP_PERIOD] = KEY_DELETE;
- //mTranslateKeyMap[SDLK_KP7] = KEY_HOME;
- //mTranslateKeyMap[SDLK_KP1] = KEY_END;
- //mTranslateKeyMap[SDLK_KP9] = KEY_PAGE_UP;
- //mTranslateKeyMap[SDLK_KP3] = KEY_PAGE_DOWN;
- //mTranslateKeyMap[SDLK_KP0] = KEY_INSERT;
- mTranslateKeyMap[SDLK_SPACE] = ' ';
- mTranslateKeyMap[SDLK_RETURN] = KEY_RETURN;
- mTranslateKeyMap[SDLK_LEFT] = KEY_LEFT;
- mTranslateKeyMap[SDLK_RIGHT] = KEY_RIGHT;
- mTranslateKeyMap[SDLK_UP] = KEY_UP;
- mTranslateKeyMap[SDLK_DOWN] = KEY_DOWN;
- mTranslateKeyMap[SDLK_ESCAPE] = KEY_ESCAPE;
- mTranslateKeyMap[SDLK_KP_ENTER] = KEY_RETURN;
- mTranslateKeyMap[SDLK_ESCAPE] = KEY_ESCAPE;
- mTranslateKeyMap[SDLK_BACKSPACE] = KEY_BACKSPACE;
- mTranslateKeyMap[SDLK_DELETE] = KEY_DELETE;
- mTranslateKeyMap[SDLK_LSHIFT] = KEY_SHIFT;
- mTranslateKeyMap[SDLK_RSHIFT] = KEY_SHIFT;
- mTranslateKeyMap[SDLK_LCTRL] = KEY_CONTROL;
- mTranslateKeyMap[SDLK_RCTRL] = KEY_CONTROL;
- mTranslateKeyMap[SDLK_LALT] = KEY_ALT;
- mTranslateKeyMap[SDLK_RALT] = KEY_ALT;
- mTranslateKeyMap[SDLK_HOME] = KEY_HOME;
- mTranslateKeyMap[SDLK_END] = KEY_END;
- mTranslateKeyMap[SDLK_PAGEUP] = KEY_PAGE_UP;
- mTranslateKeyMap[SDLK_PAGEDOWN] = KEY_PAGE_DOWN;
- mTranslateKeyMap[SDLK_MINUS] = KEY_HYPHEN;
- mTranslateKeyMap[SDLK_EQUALS] = KEY_EQUALS;
- mTranslateKeyMap[SDLK_KP_EQUALS] = KEY_EQUALS;
- mTranslateKeyMap[SDLK_INSERT] = KEY_INSERT;
- mTranslateKeyMap[SDLK_CAPSLOCK] = KEY_CAPSLOCK;
- mTranslateKeyMap[SDLK_TAB] = KEY_TAB;
- mTranslateKeyMap[SDLK_KP_PLUS] = KEY_ADD;
- mTranslateKeyMap[SDLK_KP_MINUS] = KEY_SUBTRACT;
- mTranslateKeyMap[SDLK_KP_MULTIPLY] = KEY_MULTIPLY;
- mTranslateKeyMap[SDLK_KP_DIVIDE] = KEY_PAD_DIVIDE;
- mTranslateKeyMap[SDLK_F1] = KEY_F1;
- mTranslateKeyMap[SDLK_F2] = KEY_F2;
- mTranslateKeyMap[SDLK_F3] = KEY_F3;
- mTranslateKeyMap[SDLK_F4] = KEY_F4;
- mTranslateKeyMap[SDLK_F5] = KEY_F5;
- mTranslateKeyMap[SDLK_F6] = KEY_F6;
- mTranslateKeyMap[SDLK_F7] = KEY_F7;
- mTranslateKeyMap[SDLK_F8] = KEY_F8;
- mTranslateKeyMap[SDLK_F9] = KEY_F9;
- mTranslateKeyMap[SDLK_F10] = KEY_F10;
- mTranslateKeyMap[SDLK_F11] = KEY_F11;
- mTranslateKeyMap[SDLK_F12] = KEY_F12;
- mTranslateKeyMap[SDLK_PLUS] = '=';
- mTranslateKeyMap[SDLK_COMMA] = ',';
- mTranslateKeyMap[SDLK_MINUS] = '-';
- mTranslateKeyMap[SDLK_PERIOD] = '.';
- mTranslateKeyMap[SDLK_BACKQUOTE] = '`';
- mTranslateKeyMap[SDLK_SLASH] = KEY_DIVIDE;
- mTranslateKeyMap[SDLK_SEMICOLON] = ';';
- mTranslateKeyMap[SDLK_LEFTBRACKET] = '[';
- mTranslateKeyMap[SDLK_BACKSLASH] = '\';
- mTranslateKeyMap[SDLK_RIGHTBRACKET] = ']';
- mTranslateKeyMap[SDLK_QUOTE] = ''';
- // Build inverse map
- std::map<U16, KEY>::iterator iter;
- for (iter = mTranslateKeyMap.begin(); iter != mTranslateKeyMap.end(); iter++)
- {
- mInvTranslateKeyMap[iter->second] = iter->first;
- }
- // numpad map
- mTranslateNumpadMap[SDLK_KP0] = KEY_PAD_INS;
- mTranslateNumpadMap[SDLK_KP1] = KEY_PAD_END;
- mTranslateNumpadMap[SDLK_KP2] = KEY_PAD_DOWN;
- mTranslateNumpadMap[SDLK_KP3] = KEY_PAD_PGDN;
- mTranslateNumpadMap[SDLK_KP4] = KEY_PAD_LEFT;
- mTranslateNumpadMap[SDLK_KP5] = KEY_PAD_CENTER;
- mTranslateNumpadMap[SDLK_KP6] = KEY_PAD_RIGHT;
- mTranslateNumpadMap[SDLK_KP7] = KEY_PAD_HOME;
- mTranslateNumpadMap[SDLK_KP8] = KEY_PAD_UP;
- mTranslateNumpadMap[SDLK_KP9] = KEY_PAD_PGUP;
- mTranslateNumpadMap[SDLK_KP_PERIOD] = KEY_PAD_DEL;
- // build inverse numpad map
- for (iter = mTranslateNumpadMap.begin();
- iter != mTranslateNumpadMap.end();
- iter++)
- {
- mInvTranslateNumpadMap[iter->second] = iter->first;
- }
- }
- void LLKeyboardSDL::resetMaskKeys()
- {
- SDLMod mask = SDL_GetModState();
- // MBW -- XXX -- This mirrors the operation of the Windows version of resetMaskKeys().
- // It looks a bit suspicious, as it won't correct for keys that have been released.
- // Is this the way it's supposed to work?
- if(mask & KMOD_SHIFT)
- {
- mKeyLevel[KEY_SHIFT] = TRUE;
- }
- if(mask & KMOD_CTRL)
- {
- mKeyLevel[KEY_CONTROL] = TRUE;
- }
- if(mask & KMOD_ALT)
- {
- mKeyLevel[KEY_ALT] = TRUE;
- }
- }
- MASK LLKeyboardSDL::updateModifiers(const U32 mask)
- {
- // translate the mask
- MASK out_mask = MASK_NONE;
- if(mask & KMOD_SHIFT)
- {
- out_mask |= MASK_SHIFT;
- }
- if(mask & KMOD_CTRL)
- {
- out_mask |= MASK_CONTROL;
- }
- if(mask & KMOD_ALT)
- {
- out_mask |= MASK_ALT;
- }
- return out_mask;
- }
- static U16 adjustNativekeyFromUnhandledMask(const U16 key, const U32 mask)
- {
- // SDL doesn't automatically adjust the keysym according to
- // whether NUMLOCK is engaged, so we massage the keysym manually.
- U16 rtn = key;
- if (!(mask & KMOD_NUM))
- {
- switch (key)
- {
- case SDLK_KP_PERIOD: rtn = SDLK_DELETE; break;
- case SDLK_KP0: rtn = SDLK_INSERT; break;
- case SDLK_KP1: rtn = SDLK_END; break;
- case SDLK_KP2: rtn = SDLK_DOWN; break;
- case SDLK_KP3: rtn = SDLK_PAGEDOWN; break;
- case SDLK_KP4: rtn = SDLK_LEFT; break;
- case SDLK_KP6: rtn = SDLK_RIGHT; break;
- case SDLK_KP7: rtn = SDLK_HOME; break;
- case SDLK_KP8: rtn = SDLK_UP; break;
- case SDLK_KP9: rtn = SDLK_PAGEUP; break;
- }
- }
- return rtn;
- }
- BOOL LLKeyboardSDL::handleKeyDown(const U16 key, const U32 mask)
- {
- U16 adjusted_nativekey;
- KEY translated_key = 0;
- U32 translated_mask = MASK_NONE;
- BOOL handled = FALSE;
- adjusted_nativekey = adjustNativekeyFromUnhandledMask(key, mask);
- translated_mask = updateModifiers(mask);
-
- if(translateNumpadKey(adjusted_nativekey, &translated_key))
- {
- handled = handleTranslatedKeyDown(translated_key, translated_mask);
- }
- return handled;
- }
- BOOL LLKeyboardSDL::handleKeyUp(const U16 key, const U32 mask)
- {
- U16 adjusted_nativekey;
- KEY translated_key = 0;
- U32 translated_mask = MASK_NONE;
- BOOL handled = FALSE;
- adjusted_nativekey = adjustNativekeyFromUnhandledMask(key, mask);
- translated_mask = updateModifiers(mask);
- if(translateNumpadKey(adjusted_nativekey, &translated_key))
- {
- handled = handleTranslatedKeyUp(translated_key, translated_mask);
- }
- return handled;
- }
- MASK LLKeyboardSDL::currentMask(BOOL for_mouse_event)
- {
- MASK result = MASK_NONE;
- SDLMod mask = SDL_GetModState();
- if (mask & KMOD_SHIFT) result |= MASK_SHIFT;
- if (mask & KMOD_CTRL) result |= MASK_CONTROL;
- if (mask & KMOD_ALT) result |= MASK_ALT;
- // For keyboard events, consider Meta keys equivalent to Control
- if (!for_mouse_event)
- {
- if (mask & KMOD_META) result |= MASK_CONTROL;
- }
- return result;
- }
- void LLKeyboardSDL::scanKeyboard()
- {
- for (S32 key = 0; key < KEY_COUNT; key++)
- {
- // Generate callback if any event has occurred on this key this frame.
- // Can't just test mKeyLevel, because this could be a slow frame and
- // key might have gone down then up. JC
- if (mKeyLevel[key] || mKeyDown[key] || mKeyUp[key])
- {
- mCurScanKey = key;
- mCallbacks->handleScanKey(key, mKeyDown[key], mKeyUp[key], mKeyLevel[key]);
- }
- }
- // Reset edges for next frame
- for (S32 key = 0; key < KEY_COUNT; key++)
- {
- mKeyUp[key] = FALSE;
- mKeyDown[key] = FALSE;
- if (mKeyLevel[key])
- {
- mKeyLevelFrameCount[key]++;
- }
- }
- }
-
- BOOL LLKeyboardSDL::translateNumpadKey( const U16 os_key, KEY *translated_key)
- {
- if(mNumpadDistinct == ND_NUMLOCK_ON)
- {
- std::map<U16, KEY>::iterator iter= mTranslateNumpadMap.find(os_key);
- if(iter != mTranslateNumpadMap.end())
- {
- *translated_key = iter->second;
- return TRUE;
- }
- }
- BOOL success = translateKey(os_key, translated_key);
- return success;
- }
- U16 LLKeyboardSDL::inverseTranslateNumpadKey(const KEY translated_key)
- {
- if(mNumpadDistinct == ND_NUMLOCK_ON)
- {
- std::map<KEY, U16>::iterator iter= mInvTranslateNumpadMap.find(translated_key);
- if(iter != mInvTranslateNumpadMap.end())
- {
- return iter->second;
- }
- }
- return inverseTranslateKey(translated_key);
- }
- #endif