imm.c

winNT技术操作系统,国外开放的原代码和LIUX一样

/*
 * IMM32 library
 *
 * Copyright 1998 Patrik Stridvall
 * Copyright 2002, 2003 CodeWeavers, Aric Stewart
 *
 * 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "wine/debug.h"
#include "imm.h"
#include "winnls.h"

WINE_DEFAULT_DEBUG_CHANNEL(imm);

#define FROM_IME 0xcafe1337

static void (*pX11DRV_ForceXIMReset)(HWND);

typedef struct tagInputContextData
{
        LPBYTE          CompositionString;
        LPBYTE          CompositionReadingString;
        LPBYTE          ResultString;
        LPBYTE          ResultReadingString;
        DWORD           dwCompStringSize;   /* buffer size */
        DWORD           dwCompStringLength; /* string length (in bytes) */
        DWORD           dwCompReadStringSize;
        DWORD           dwResultStringSize;
        DWORD           dwResultReadStringSize;
        HWND            hwnd;
        BOOL            bOpen;
        BOOL            bInternalState;
        BOOL            bRead;
        LOGFONTW        font;
        HFONT           textfont;
        COMPOSITIONFORM CompForm;
} InputContextData;

static InputContextData *root_context = NULL;
static HWND hwndDefault = NULL;
static HANDLE hImeInst;
static const WCHAR WC_IMECLASSNAME[] = {'I','M','E',0};

/* MSIME messages */
static UINT WM_MSIME_SERVICE;
static UINT WM_MSIME_RECONVERTOPTIONS;
static UINT WM_MSIME_MOUSE;
static UINT WM_MSIME_RECONVERTREQUEST;
static UINT WM_MSIME_RECONVERT;
static UINT WM_MSIME_QUERYPOSITION;
static UINT WM_MSIME_DOCUMENTFEED;

/*
 * prototypes
 */
static LRESULT WINAPI IME_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
                                          LPARAM lParam);
static void UpdateDataInDefaultIMEWindow(HWND hwnd);
static void ImmInternalPostIMEMessage(UINT, WPARAM, LPARAM);
static void ImmInternalSetOpenStatus(BOOL fOpen);

static VOID IMM_PostResult(InputContextData *data)
{
    unsigned int i;
    TRACE("Posting result as IME_CHAR\n");

    for (i = 0; i < data->dwResultStringSize / sizeof (WCHAR); i++)
        ImmInternalPostIMEMessage (WM_IME_CHAR, ((WCHAR*)data->ResultString)[i],
                     1);

    /* clear the buffer */
    if (data->dwResultStringSize)
        HeapFree(GetProcessHeap(),0,data->ResultString);
    data->dwResultStringSize = 0;
    data->ResultString = NULL;
}

static void IMM_Register(void)
{
    WNDCLASSW wndClass;
    ZeroMemory(&wndClass, sizeof(WNDCLASSW));
    wndClass.style = CS_GLOBALCLASS | CS_IME | CS_HREDRAW | CS_VREDRAW;
    wndClass.lpfnWndProc = (WNDPROC) IME_WindowProc;
    wndClass.cbClsExtra = 0;
    wndClass.cbWndExtra = 0;
    wndClass.hInstance = hImeInst;
    wndClass.hCursor = LoadCursorW(NULL, (LPWSTR)IDC_ARROW);
    wndClass.hIcon = NULL;
    wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW +1);
    wndClass.lpszMenuName   = 0;
    wndClass.lpszClassName = WC_IMECLASSNAME;
    RegisterClassW(&wndClass);
}

static void IMM_Unregister(void)
{
    UnregisterClassW(WC_IMECLASSNAME, NULL);
}

static void IMM_RegisterMessages(void)
{
    WM_MSIME_SERVICE = RegisterWindowMessageA("MSIMEService");
    WM_MSIME_RECONVERTOPTIONS = RegisterWindowMessageA("MSIMEReconvertOptions");
    WM_MSIME_MOUSE = RegisterWindowMessageA("MSIMEMouseOperation");
    WM_MSIME_RECONVERTREQUEST = RegisterWindowMessageA("MSIMEReconvertRequest");
    WM_MSIME_RECONVERT = RegisterWindowMessageA("MSIMEReconvert");
    WM_MSIME_QUERYPOSITION = RegisterWindowMessageA("MSIMEQueryPosition");
    WM_MSIME_DOCUMENTFEED = RegisterWindowMessageA("MSIMEDocumentFeed");
}


BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpReserved)
{
    HMODULE x11drv;

    TRACE("%p, %x, %p\n",hInstDLL,fdwReason,lpReserved);
    switch (fdwReason)
    {
        case DLL_PROCESS_ATTACH:
            DisableThreadLibraryCalls(hInstDLL);
            hImeInst = hInstDLL;
            IMM_RegisterMessages();
            x11drv = GetModuleHandleA("winex11.drv");
            if (x11drv) pX11DRV_ForceXIMReset = (void *)GetProcAddress( x11drv, "ForceXIMReset");
            break;
        case DLL_PROCESS_DETACH:
            if (hwndDefault)
            {
                DestroyWindow(hwndDefault);
                hwndDefault = 0;
            }
            IMM_Unregister();
            break;
    }
    return TRUE;
}

/* for posting messages as the IME */
static void ImmInternalPostIMEMessage(UINT msg, WPARAM wParam, LPARAM lParam)
{
    HWND target = GetFocus();
    if (!target)
       PostMessageW(root_context->hwnd,msg,wParam,lParam);
    else 
       PostMessageW(target, msg, wParam, lParam);
}


static void ImmInternalSetOpenStatus(BOOL fOpen)
{
    TRACE("Setting internal state to %s\n",(fOpen)?"OPEN":"CLOSED");

   root_context->bOpen = fOpen;
   root_context->bInternalState = fOpen;

   if (fOpen == FALSE)
   {
        ShowWindow(hwndDefault,SW_HIDE);

        if (root_context->dwCompStringSize)
            HeapFree(GetProcessHeap(),0,root_context->CompositionString);
        if (root_context->dwCompReadStringSize)
            HeapFree(GetProcessHeap(),0,root_context->CompositionReadingString);
        if (root_context->dwResultStringSize)
            HeapFree(GetProcessHeap(),0,root_context->ResultString);
        if (root_context->dwResultReadStringSize)
            HeapFree(GetProcessHeap(),0,root_context->ResultReadingString);
        root_context->dwCompStringSize = 0;
        root_context->dwCompStringLength = 0;
        root_context->CompositionString = NULL;
        root_context->dwCompReadStringSize = 0;
        root_context->CompositionReadingString = NULL;
        root_context->dwResultStringSize = 0;
        root_context->ResultString = NULL;
        root_context->dwResultReadStringSize = 0;
        root_context->ResultReadingString = NULL;
    }
    else
        ShowWindow(hwndDefault, SW_SHOWNOACTIVATE);

   SendMessageW(root_context->hwnd, WM_IME_NOTIFY, IMN_SETOPENSTATUS, 0);
}


/***********************************************************************
 *		ImmAssociateContext (IMM32.@)
 */
HIMC WINAPI ImmAssociateContext(HWND hWnd, HIMC hIMC)
{
    InputContextData *data = (InputContextData*)hIMC;

    WARN("(%p, %p): semi-stub\n", hWnd, hIMC);

    if (!hIMC)
        return NULL;

    /*
     * WINE SPECIFIC! MAY CONFLICT
     * associate the root context we have an XIM created
     */
    if (hWnd == 0x000)
    {
        root_context = (InputContextData*)hIMC;
    }

    /*
     * If already associated just return
     */
    if (data->hwnd == hWnd)
        return hIMC;

    if (IsWindow(data->hwnd))
    {
        /*
         * Post a message that your context is switching
         */
        SendMessageW(data->hwnd, WM_IME_SETCONTEXT, FALSE, ISC_SHOWUIALL);
    }

    data->hwnd = hWnd;

    if (IsWindow(data->hwnd))
    {
        /*
         * Post a message that your context is switching
         */
        SendMessageW(data->hwnd, WM_IME_SETCONTEXT, TRUE, ISC_SHOWUIALL);
    }

    /*
     * TODO: We need to keep track of the old context associated
     * with a window and return it for now we will return NULL;
     */
    return NULL;
}

/***********************************************************************
 *              ImmAssociateContextEx (IMM32.@)
 */
BOOL WINAPI ImmAssociateContextEx(HWND hWnd, HIMC hIMC, DWORD dwFlags)
{
    FIXME("(%p, %p, %d): stub\n", hWnd, hIMC, dwFlags);
    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
    return FALSE;
}

/***********************************************************************
 *		ImmConfigureIMEA (IMM32.@)
 */
BOOL WINAPI ImmConfigureIMEA(
  HKL hKL, HWND hWnd, DWORD dwMode, LPVOID lpData)
{
  FIXME("(%p, %p, %d, %p): stub\n",
    hKL, hWnd, dwMode, lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return FALSE;
}

/***********************************************************************
 *		ImmConfigureIMEW (IMM32.@)
 */
BOOL WINAPI ImmConfigureIMEW(
  HKL hKL, HWND hWnd, DWORD dwMode, LPVOID lpData)
{
  FIXME("(%p, %p, %d, %p): stub\n",
    hKL, hWnd, dwMode, lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return FALSE;
}

/***********************************************************************
 *		ImmCreateContext (IMM32.@)
 */
HIMC WINAPI ImmCreateContext(void)
{
    InputContextData *new_context;

    new_context = HeapAlloc(GetProcessHeap(),0,sizeof(InputContextData));
    ZeroMemory(new_context,sizeof(InputContextData));

    return (HIMC)new_context;
}

/***********************************************************************
 *		ImmDestroyContext (IMM32.@)
 */
BOOL WINAPI ImmDestroyContext(HIMC hIMC)
{
    InputContextData *data = (InputContextData*)hIMC;

    TRACE("Destroying %p\n",hIMC);

    if (hIMC)
    {
        if (data->dwCompStringSize)
            HeapFree(GetProcessHeap(),0,data->CompositionString);
        if (data->dwCompReadStringSize)
            HeapFree(GetProcessHeap(),0,data->CompositionReadingString);
        if (data->dwResultStringSize)
            HeapFree(GetProcessHeap(),0,data->ResultString);
        if (data->dwResultReadStringSize)
            HeapFree(GetProcessHeap(),0,data->ResultReadingString);

        if (data->textfont)
        {
            DeleteObject(data->textfont);
            data->textfont = NULL;
        }

        HeapFree(GetProcessHeap(),0,data);
    }
    return TRUE;
}

/***********************************************************************
 *		ImmDisableIME (IMM32.@)
 */
BOOL WINAPI ImmDisableIME(DWORD idThread)
{
    FIXME("(%d): stub\n", idThread);
    return TRUE;
}

/***********************************************************************
 *		ImmEnumRegisterWordA (IMM32.@)
 */
UINT WINAPI ImmEnumRegisterWordA(
  HKL hKL, REGISTERWORDENUMPROCA lpfnEnumProc,
  LPCSTR lpszReading, DWORD dwStyle,
  LPCSTR lpszRegister, LPVOID lpData)
{
  FIXME("(%p, %p, %s, %d, %s, %p): stub\n",
    hKL, lpfnEnumProc,
    debugstr_a(lpszReading), dwStyle,
    debugstr_a(lpszRegister), lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return 0;
}

/***********************************************************************
 *		ImmEnumRegisterWordW (IMM32.@)
 */
UINT WINAPI ImmEnumRegisterWordW(
  HKL hKL, REGISTERWORDENUMPROCW lpfnEnumProc,
  LPCWSTR lpszReading, DWORD dwStyle,
  LPCWSTR lpszRegister, LPVOID lpData)
{
  FIXME("(%p, %p, %s, %d, %s, %p): stub\n",
    hKL, lpfnEnumProc,
    debugstr_w(lpszReading), dwStyle,
    debugstr_w(lpszRegister), lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return 0;
}

/***********************************************************************
 *		ImmEscapeA (IMM32.@)
 */
LRESULT WINAPI ImmEscapeA(
  HKL hKL, HIMC hIMC,
  UINT uEscape, LPVOID lpData)
{
  FIXME("(%p, %p, %d, %p): stub\n",
    hKL, hIMC, uEscape, lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return 0;
}

/***********************************************************************
 *		ImmEscapeW (IMM32.@)
 */
LRESULT WINAPI ImmEscapeW(
  HKL hKL, HIMC hIMC,
  UINT uEscape, LPVOID lpData)
{
  FIXME("(%p, %p, %d, %p): stub\n",
    hKL, hIMC, uEscape, lpData
  );
  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  return 0;
}

/***********************************************************************
 *		ImmGetCandidateListA (IMM32.@)
 */
DWORD WINAPI ImmGetCandidateListA(