628 lines
16 KiB
C
628 lines
16 KiB
C
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/*************************************************
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* toascii.c *
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* *
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* Copyright (C) 1999 Microsoft Inc. *
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* *
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*************************************************/
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#include <windows.h>
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#include <immdev.h>
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#include "imeattr.h"
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#include "imedefs.h"
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/**********************************************************************/
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/* ProcessKey() */
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/* Return Value: */
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/* different state which input key will change IME to */
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/**********************************************************************/
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UINT PASCAL ProcessKey( // this key will cause the IME go to what state
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WORD wCharCode,
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UINT uVirtKey,
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UINT uScanCode,
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CONST LPBYTE lpbKeyState,
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LPINPUTCONTEXT lpIMC,
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LPPRIVCONTEXT lpImcP)
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{
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if (!lpIMC)
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{
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return (CST_INVALID);
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}
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if (!lpImcP)
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{
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return (CST_INVALID);
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}
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if (uVirtKey == VK_MENU)
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{
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//
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// no ALT key
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//
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return (CST_INVALID);
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}
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else if (uScanCode & KF_ALTDOWN)
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{
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//
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// no ALT-xx key
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//
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return (CST_INVALID);
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}
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else if (uVirtKey == VK_CONTROL)
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{
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//
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// no CTRL key
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//
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return (CST_INVALID);
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}
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else if (lpbKeyState[VK_CONTROL] & 0x80)
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{
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//
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// no CTRL-xx key
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//
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return (CST_INVALID);
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}
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else if (uVirtKey == VK_SHIFT)
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{
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//
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// no SHIFT key
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//
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return (CST_INVALID);
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}
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else if (!lpIMC->fOpen)
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{
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//
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// don't compose in close status
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//
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return (CST_INVALID);
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}
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else if (lpIMC->fdwConversion & IME_CMODE_NOCONVERSION)
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{
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//
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// don't compose in no coversion status
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//
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return (CST_INVALID);
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}
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else if (lpIMC->fdwConversion & IME_CMODE_CHARCODE)
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{
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//
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// not support
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//
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return (CST_INVALID);
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}
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if (uVirtKey >= VK_NUMPAD0 && uVirtKey <= VK_DIVIDE)
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{
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//
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// A PM decision: all numpad should be past to app
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//
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return (CST_ALPHANUMERIC);
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}
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if (!(lpIMC->fdwConversion & IME_CMODE_NATIVE))
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{
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return (CST_INVALID);
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}
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else if (!(lpbKeyState[VK_SHIFT] & 0x80))
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{
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//
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// need more check for IME_CMODE_NATIVE
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//
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}
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else if (wCharCode < ' ' && wCharCode > '~')
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{
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return (CST_INVALID);
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}
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//
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// need more check for IME_CMODE_NATIVE
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//
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if (wCharCode >= ' ' && wCharCode <= 'z')
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{
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wCharCode = bUpper[wCharCode - ' '];
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}
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if (uVirtKey == VK_ESCAPE)
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{
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register LPGUIDELINE lpGuideLine;
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register UINT iImeState;
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if (lpImcP->fdwImeMsg & MSG_ALREADY_START)
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{
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return (CST_INPUT);
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}
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lpGuideLine = ImmLockIMCC(lpIMC->hGuideLine);
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if (!lpGuideLine)
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{
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return (CST_INVALID);
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}
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else if (lpGuideLine->dwLevel == GL_LEVEL_NOGUIDELINE)
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{
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iImeState = CST_INVALID;
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}
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else
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{
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//
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// need this key to clean information string or guideline state
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//
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iImeState = CST_INPUT;
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}
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ImmUnlockIMCC(lpIMC->hGuideLine);
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return (iImeState);
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}
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else if (uVirtKey == VK_BACK)
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{
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if (lpImcP->fdwImeMsg & MSG_ALREADY_START)
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{
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return (CST_INPUT);
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}
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else
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{
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return (CST_INVALID);
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}
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}
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//
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// check finalize char
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//
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if (wCharCode == ' ' && lpImcP->iImeState == CST_INIT)
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{
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return (CST_INVALID);
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}
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else if (lpImeL->fCompChar[(wCharCode - ' ') >> 4] &
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fMask[wCharCode & 0x000F])
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{
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return (CST_INPUT);
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}
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else if (wCharCode >= 'G' && wCharCode <= 'Z' ||
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wCharCode >= 'g' && wCharCode <= 'z')
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{
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//
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// PM decision says we should not send these letters to input
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// to avoid confusing users. We special handle this case by
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// introducing CST_BLOCKINPUT flag.
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//
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return (CST_BLOCKINPUT);
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}
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return (CST_INVALID);
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}
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/**********************************************************************/
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/* ImeProcessKey() / UniImeProcessKey() */
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/* Return Value: */
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/* TRUE - successful, FALSE - failure */
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/**********************************************************************/
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// if this key is need by IME?
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BOOL WINAPI ImeProcessKey(
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HIMC hIMC,
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UINT uVirtKey,
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LPARAM lParam,
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CONST LPBYTE lpbKeyState)
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{
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LPINPUTCONTEXT lpIMC;
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LPPRIVCONTEXT lpImcP;
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BYTE szAscii[4];
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int nChars;
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BOOL fRet;
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//
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// can't compose in NULL hIMC
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//
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if (!hIMC)
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{
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return (FALSE);
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}
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lpIMC = (LPINPUTCONTEXT)ImmLockIMC(hIMC);
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if (!lpIMC)
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{
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return (FALSE);
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}
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lpImcP = (LPPRIVCONTEXT)ImmLockIMCC(lpIMC->hPrivate);
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if (!lpImcP)
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{
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ImmUnlockIMC(hIMC);
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return (FALSE);
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}
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nChars = ToAscii(uVirtKey, HIWORD(lParam), lpbKeyState, (LPVOID)szAscii, 0);
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if (!nChars)
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{
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szAscii[0] = 0;
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}
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if (ProcessKey( (WORD)szAscii[0],
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uVirtKey,
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HIWORD(lParam),
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lpbKeyState,
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lpIMC,
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lpImcP) == CST_INVALID)
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{
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fRet = FALSE;
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}
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else
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{
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fRet = TRUE;
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}
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ImmUnlockIMCC(lpIMC->hPrivate);
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ImmUnlockIMC(hIMC);
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return (fRet);
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}
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/**********************************************************************/
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/* TranslateToAscii() */
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/* Translates the key input to WM_CHAR as keyboard drivers does */
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/* */
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/* Return Value: */
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/* the number of translated chars */
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/**********************************************************************/
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UINT PASCAL TranslateToAscii(
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UINT uScanCode,
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LPTRANSMSG lpTransMsg,
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WORD wCharCode)
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{
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if (wCharCode)
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{
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//
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// one char code
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//
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lpTransMsg->message = WM_CHAR;
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lpTransMsg->wParam = wCharCode;
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lpTransMsg->lParam = (uScanCode << 16) | 1UL;
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return (1);
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}
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//
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// no char code case
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//
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return (0);
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}
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/**********************************************************************/
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/* TranslateImeMessage() */
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/* Return Value: */
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/* the number of translated messages */
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/**********************************************************************/
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UINT PASCAL TranslateImeMessage(
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LPTRANSMSGLIST lpTransBuf,
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LPINPUTCONTEXT lpIMC,
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LPPRIVCONTEXT lpImcP)
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{
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UINT uNumMsg;
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UINT i;
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BOOL bLockMsgBuf;
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LPTRANSMSG lpTransMsg;
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uNumMsg = 0;
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bLockMsgBuf = FALSE;
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for (i = 0; i < 2; i++)
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{
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if (lpImcP->fdwImeMsg & MSG_IMN_COMPOSITIONSIZE)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_NOTIFY;
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lpTransMsg->wParam = IMN_PRIVATE;
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lpTransMsg->lParam = IMN_PRIVATE_COMPOSITION_SIZE;
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lpTransMsg += 1;
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}
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}
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if (lpImcP->fdwImeMsg & MSG_START_COMPOSITION)
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{
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if (!(lpImcP->fdwImeMsg & MSG_ALREADY_START))
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_STARTCOMPOSITION;
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lpTransMsg->wParam = 0;
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lpTransMsg->lParam = 0;
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lpTransMsg += 1;
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lpImcP->fdwImeMsg |= MSG_ALREADY_START;
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}
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}
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}
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if (lpImcP->fdwImeMsg & MSG_IMN_COMPOSITIONPOS)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_NOTIFY;
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lpTransMsg->wParam = IMN_SETCOMPOSITIONWINDOW;
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lpTransMsg->lParam = 0;
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lpTransMsg += 1;
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}
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}
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if (lpImcP->fdwImeMsg & MSG_COMPOSITION)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_COMPOSITION;
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lpTransMsg->wParam = lpImcP->dwCompChar;
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lpTransMsg->lParam = lpImcP->fdwGcsFlag;
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lpTransMsg += 1;
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}
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}
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if (lpImcP->fdwImeMsg & MSG_GUIDELINE)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_NOTIFY;
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lpTransMsg->wParam = IMN_GUIDELINE;
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lpTransMsg->lParam = 0;
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lpTransMsg += 1;
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}
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}
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if (lpImcP->fdwImeMsg & MSG_IMN_PAGEUP)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_NOTIFY;
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lpTransMsg->wParam = IMN_PRIVATE;
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lpTransMsg->lParam = IMN_PRIVATE_PAGEUP;
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lpTransMsg += 1;
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}
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}
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if (lpImcP->fdwImeMsg & MSG_END_COMPOSITION)
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{
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if (lpImcP->fdwImeMsg & MSG_ALREADY_START)
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{
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if (!i)
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{
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uNumMsg++;
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}
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else
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{
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lpTransMsg->message = WM_IME_ENDCOMPOSITION;
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lpTransMsg->wParam = 0;
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lpTransMsg->lParam = 0;
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lpTransMsg += 1;
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lpImcP->fdwImeMsg &= ~(MSG_ALREADY_START);
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||
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|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lpImcP->fdwImeMsg & MSG_IMN_TOGGLE_UI)
|
||
|
|
{
|
||
|
|
if (!i)
|
||
|
|
{
|
||
|
|
uNumMsg++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
lpTransMsg->message = WM_IME_NOTIFY;
|
||
|
|
lpTransMsg->wParam = IMN_PRIVATE;
|
||
|
|
lpTransMsg->lParam = IMN_PRIVATE_TOGGLE_UI;
|
||
|
|
lpTransMsg += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!i)
|
||
|
|
{
|
||
|
|
HIMCC hMem;
|
||
|
|
|
||
|
|
if (!uNumMsg)
|
||
|
|
{
|
||
|
|
return (uNumMsg);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lpImcP->fdwImeMsg & MSG_IN_IMETOASCIIEX)
|
||
|
|
{
|
||
|
|
UINT uNumMsgLimit;
|
||
|
|
|
||
|
|
// ++ for the start position of buffer to strore the messages
|
||
|
|
uNumMsgLimit = lpTransBuf->uMsgCount;
|
||
|
|
|
||
|
|
if (uNumMsg <= uNumMsgLimit)
|
||
|
|
{
|
||
|
|
lpTransMsg = lpTransBuf->TransMsg;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// we need to use message buffer
|
||
|
|
if (!lpIMC->hMsgBuf)
|
||
|
|
{
|
||
|
|
lpIMC->hMsgBuf = ImmCreateIMCC(uNumMsg * sizeof(TRANSMSG));
|
||
|
|
lpIMC->dwNumMsgBuf = 0;
|
||
|
|
}
|
||
|
|
else if (hMem = ImmReSizeIMCC(lpIMC->hMsgBuf,
|
||
|
|
(lpIMC->dwNumMsgBuf + uNumMsg) * sizeof(TRANSMSG)))
|
||
|
|
{
|
||
|
|
if (hMem != lpIMC->hMsgBuf)
|
||
|
|
{
|
||
|
|
ImmDestroyIMCC(lpIMC->hMsgBuf);
|
||
|
|
lpIMC->hMsgBuf = hMem;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
lpTransMsg = (LPTRANSMSG)ImmLockIMCC(lpIMC->hMsgBuf);
|
||
|
|
if (!lpTransMsg)
|
||
|
|
{
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
lpTransMsg += lpIMC->dwNumMsgBuf;
|
||
|
|
|
||
|
|
bLockMsgBuf = TRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (bLockMsgBuf)
|
||
|
|
{
|
||
|
|
ImmUnlockIMCC(lpIMC->hMsgBuf);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return (uNumMsg);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**********************************************************************/
|
||
|
|
/* ImeToAsciiEx() / UniImeToAsciiex() */
|
||
|
|
/* Return Value: */
|
||
|
|
/* the number of translated message */
|
||
|
|
/**********************************************************************/
|
||
|
|
UINT WINAPI ImeToAsciiEx(
|
||
|
|
UINT uVirtKey,
|
||
|
|
UINT uScanCode,
|
||
|
|
CONST LPBYTE lpbKeyState,
|
||
|
|
LPTRANSMSGLIST lpTransBuf,
|
||
|
|
UINT fuState,
|
||
|
|
HIMC hIMC)
|
||
|
|
{
|
||
|
|
WORD wCharCode;
|
||
|
|
LPINPUTCONTEXT lpIMC;
|
||
|
|
LPCOMPOSITIONSTRING lpCompStr;
|
||
|
|
LPGUIDELINE lpGuideLine;
|
||
|
|
LPPRIVCONTEXT lpImcP;
|
||
|
|
UINT uNumMsg;
|
||
|
|
int iRet;
|
||
|
|
|
||
|
|
wCharCode = HIWORD(uVirtKey);
|
||
|
|
uVirtKey = LOBYTE(uVirtKey);
|
||
|
|
|
||
|
|
if (!hIMC)
|
||
|
|
{
|
||
|
|
return TranslateToAscii(uScanCode,
|
||
|
|
&lpTransBuf->TransMsg[0],
|
||
|
|
wCharCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
lpIMC = (LPINPUTCONTEXT)ImmLockIMC(hIMC);
|
||
|
|
if (!lpIMC)
|
||
|
|
{
|
||
|
|
return TranslateToAscii(uScanCode,
|
||
|
|
&lpTransBuf->TransMsg[0],
|
||
|
|
wCharCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
lpImcP = (LPPRIVCONTEXT)ImmLockIMCC(lpIMC->hPrivate);
|
||
|
|
if (!lpImcP)
|
||
|
|
{
|
||
|
|
ImmUnlockIMC(hIMC);
|
||
|
|
return TranslateToAscii(uScanCode,
|
||
|
|
&lpTransBuf->TransMsg[0],
|
||
|
|
wCharCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Now all composition realated information already pass to app
|
||
|
|
// a brand new start
|
||
|
|
lpImcP->fdwImeMsg = lpImcP->fdwImeMsg & (MSG_STATIC_STATE) |
|
||
|
|
MSG_IN_IMETOASCIIEX;
|
||
|
|
|
||
|
|
iRet = ProcessKey(wCharCode,
|
||
|
|
uVirtKey,
|
||
|
|
uScanCode,
|
||
|
|
lpbKeyState,
|
||
|
|
lpIMC,
|
||
|
|
lpImcP);
|
||
|
|
|
||
|
|
if (iRet == CST_ALPHABET)
|
||
|
|
{
|
||
|
|
// A-Z convert to a-z, a-z convert to A-Z
|
||
|
|
wCharCode ^= 0x20;
|
||
|
|
|
||
|
|
iRet = CST_ALPHANUMERIC;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (iRet == CST_ALPHANUMERIC)
|
||
|
|
{
|
||
|
|
uNumMsg = TranslateImeMessage(lpTransBuf, lpIMC, lpImcP);
|
||
|
|
|
||
|
|
uNumMsg += TranslateToAscii(uScanCode,
|
||
|
|
&lpTransBuf->TransMsg[uNumMsg],
|
||
|
|
wCharCode);
|
||
|
|
}
|
||
|
|
else if (iRet == CST_INPUT)
|
||
|
|
{
|
||
|
|
lpCompStr = (LPCOMPOSITIONSTRING)ImmLockIMCC(lpIMC->hCompStr);
|
||
|
|
lpGuideLine = (LPGUIDELINE)ImmLockIMCC(lpIMC->hGuideLine);
|
||
|
|
|
||
|
|
CompWord(wCharCode, hIMC, lpIMC, lpCompStr, lpGuideLine, lpImcP);
|
||
|
|
|
||
|
|
if (lpGuideLine)
|
||
|
|
{
|
||
|
|
ImmUnlockIMCC(lpIMC->hGuideLine);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lpCompStr)
|
||
|
|
{
|
||
|
|
ImmUnlockIMCC(lpIMC->hCompStr);
|
||
|
|
}
|
||
|
|
|
||
|
|
uNumMsg = TranslateImeMessage(lpTransBuf, lpIMC, lpImcP);
|
||
|
|
}
|
||
|
|
else if (iRet == CST_BLOCKINPUT)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This codepoint should be blocked. We don't compose it for IME.
|
||
|
|
// Nor do we pass it to normal input. Instead, we beep.
|
||
|
|
//
|
||
|
|
MessageBeep(-1);
|
||
|
|
uNumMsg = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
uNumMsg = TranslateToAscii(uScanCode,
|
||
|
|
&lpTransBuf->TransMsg[0],
|
||
|
|
wCharCode);
|
||
|
|
}
|
||
|
|
|
||
|
|
lpImcP->fdwImeMsg &= (MSG_STATIC_STATE);
|
||
|
|
lpImcP->fdwGcsFlag = 0;
|
||
|
|
|
||
|
|
ImmUnlockIMCC(lpIMC->hPrivate);
|
||
|
|
ImmUnlockIMC(hIMC);
|
||
|
|
|
||
|
|
return (uNumMsg);
|
||
|
|
}
|