compui.cpp

基于Pocket PC的简体中文拼音输入法中的用户接口部分的源代码

    LPUIPRIV lpUIPriv;

    lpUIPriv = (LPUIPRIV)GetWindowLong(hCompWnd, IMMGWL_PRIVATE);
    if (!lpUIPriv) {
        return 0L;
    }

    lpUIPriv->hCompWnd = (HWND)NULL;

    return 0;
}

/**********************************************************************/
/* OnCompPaint()                                                      */
/**********************************************************************/
static __inline
LRESULT OnCompPaint(HWND hCompWnd)
{
    HDC         hDC;
    PAINTSTRUCT ps;

    hDC = BeginPaint(hCompWnd, &ps);
    PaintCompWindow(GetWindow(hCompWnd, GW_OWNER), hDC);
    EndPaint(hCompWnd, &ps);

    return 0L;
}

/**********************************************************************/
/* OnSettingChange()                                                  */
/**********************************************************************/
static __inline
LRESULT OnSettingChange(HWND hCompWnd, WPARAM wFlag)
{
    LPUIPRIV lpUIPriv;
    RECT     rcPrev;

    lpUIPriv = (LPUIPRIV)GetWindowLong(hCompWnd, IMMGWL_PRIVATE);
    rcPrev = g_sImeUIG.rcWorkArea;

    switch(wFlag) {
    case SPI_SETCURRENTIM:
        GetWorkArea(&g_sImeUIG.rcWorkArea);
        break;
    case SPI_SETSIPINFO:
        GetWorkArea(&g_sImeUIG.rcWorkArea);
        break;
    default:
        return 1L;
    }

    if (rcPrev.left == g_sImeUIG.rcWorkArea.left &&
        rcPrev.top == g_sImeUIG.rcWorkArea.top &&
        rcPrev.right == g_sImeUIG.rcWorkArea.right &&
        rcPrev.bottom == g_sImeUIG.rcWorkArea.bottom) {
        return 0L;
    }

    if (lpUIPriv->fdwUIFlags & UI_CAND_ALREADY_OPEN) {
        POINT ptNew;

        ptNew.x = lpUIPriv->ptComp.x;
        ptNew.y = lpUIPriv->ptComp.y + lpUIPriv->nCompHi - g_sImeUIG.cyBorder;

        AdjustCandWnd(lpUIPriv->hCandWnd, ptNew);
    }

    return 0L;
}

/**********************************************************************/
/* CompWndProc()                                                      */
/**********************************************************************/
LRESULT CALLBACK CompWndProc(HWND   hCompWnd,
                             UINT   uMsg,
                             WPARAM wParam,
                             LPARAM lParam)
{
    switch (uMsg) {
    case WM_CREATE:
        return OnCompCreate(hCompWnd, (LPCREATESTRUCT)lParam);
    case WM_DESTROY:
        return OnCompDestroy(hCompWnd);
    case WM_IME_NOTIFY:
        if (wParam == IMN_SETCOMPOSITIONWINDOW) {
            SetCompPosition(hCompWnd);
        }
        break;
    case WM_PAINT:
        return OnCompPaint(hCompWnd);
    case WM_SETTINGCHANGE:
        return OnSettingChange(hCompWnd, wParam);
        break;
    default:
        return DefWindowProc(hCompWnd, uMsg, wParam, lParam);
    }

    return 0L;
}


//=====================================================================//
//  Exported API                                                       //
//=====================================================================//

/**********************************************************************/
/* ShowComp() : Show the composition window                           */
/**********************************************************************/
void ShowComp(HWND hUIWnd, int nShowCompCmd)
{
    LPUIPRIV lpUIPriv;
    BOOL     bCompShowed;

    // show or hid the UI window
    lpUIPriv = (LPUIPRIV)GetWindowLong(hUIWnd, IMMGWL_PRIVATE);
    if (!lpUIPriv) {
        return;
    }

    if (!(lpUIPriv->fdwUIFlags & UI_COMP_ALREADY_START)) {
        return;
    }

    if (!lpUIPriv->hCompWnd) {
        return;
    }

    bCompShowed = IsWindowVisible(lpUIPriv->hCompWnd);

    if (bCompShowed && nShowCompCmd == SW_SHOWNOACTIVATE) {
        return;
    } else if (!bCompShowed && nShowCompCmd == SW_HIDE) {
        return;
    } else {
    }

    if (nShowCompCmd == SW_HIDE) {
        lpUIPriv->fdwSetContext &= ~ISC_SHOWUICOMPOSITIONWINDOW;
    }

    ShowWindow(lpUIPriv->hCompWnd, nShowCompCmd);

    return;
}

/**********************************************************************/
/* StartComp()                                                        */
/**********************************************************************/
void StartComp(HWND hUIWnd)
{
    LPUIPRIV       lpUIPriv;
    HIMC                hIMC;
#ifndef WPC
    LPINPUTCONTEXT      lpIMC;
    LPCOMPOSITIONSTRING lpCompStr;
#endif // WPC
    DWORD               dwCompStrLen;

    lpUIPriv = (LPUIPRIV)GetWindowLong(hUIWnd, IMMGWL_PRIVATE);
    if (!lpUIPriv) {     // Oh! Oh!
        return;
    }

    hIMC = (HIMC)GetWindowLong(hUIWnd, IMMGWL_IMC);
    if (!hIMC) {
        return;
    }

#ifndef WPC
    lpIMC = (LPINPUTCONTEXT)ImmLockIMC(hIMC);
    if (!lpIMC) {
        return;
    }

    lpCompStr = (LPCOMPOSITIONSTRING)ImmLockIMCC(lpIMC->hCompStr);
    if (!lpCompStr) {
        ImmUnlockIMC(hIMC);
        return;
    }

    dwCompStrLen = lpCompStr->dwCompStrLen;

    ImmUnlockIMCC(lpIMC->hCompStr);

    ImmUnlockIMC(hIMC);
#else
    UINT uData;

    uData = IME_ESC_GET_COMPSTR_LEN;
    if (ImmEscape(NULL, hIMC, IME_ESC_QUERY_SUPPORT, (LPVOID)&uData)) {
        dwCompStrLen = ImmEscape(NULL, hIMC, IME_ESC_GET_COMPSTR_LEN, NULL);
    } else {
        dwCompStrLen = 0;
    }
#endif // WPC

    if (0 == dwCompStrLen) { return; }

    if (!lpUIPriv->hCompWnd) {
        lpUIPriv->hCompWnd = CreateWindowEx(
            WS_EX_NOACTIVATE|WS_EX_TOPMOST,
            v_szCompClassName, NULL,
            WS_POPUP|WS_BORDER,
            0, 0, 10, 10,
            hUIWnd, (HMENU)NULL, lpUIPriv->hInst, NULL);

    }

    if (lpUIPriv->hCompWnd) {
        SetWindowPos(lpUIPriv->hCompWnd, HWND_TOPMOST, 0, 0,
                     lpUIPriv->nCompWi, lpUIPriv->nCompHi,
                     SWP_NOACTIVATE|SWP_NOMOVE);//|SWP_NOZORDER);
    }

    lpUIPriv->fdwUIFlags |= UI_COMP_ALREADY_START;

    SetCompPosition(lpUIPriv->hCompWnd);

    ShowComp(hUIWnd, SW_SHOWNOACTIVATE);

    return;
}

/**********************************************************************/
/* OnComp()                                                           */
/**********************************************************************/
void OnComp(HWND hUIWnd, DWORD fdwFlags)
{
    LPUIPRIV lpUIPriv;

    if (!(fdwFlags & (GCS_COMPSTR|GCS_COMPREADSTR|GCS_CURSORPOS))) {
        return;
    }

    lpUIPriv = (LPUIPRIV)GetWindowLong(hUIWnd, IMMGWL_PRIVATE);
    if (!lpUIPriv) {
        return;
    }

    if (!(lpUIPriv->fdwUIFlags & UI_COMP_ALREADY_START)) {
        return;
    }
    
    if (lpUIPriv->hCompWnd) {
        HDC hDC;

        hDC = GetDC(lpUIPriv->hCompWnd);
        PaintCompWindow(hUIWnd, hDC);
        ReleaseDC(lpUIPriv->hCompWnd, hDC);
    }

    return;
}

/**********************************************************************/
/* EndComp()                                                          */
/**********************************************************************/
void EndComp(HWND hUIWnd)
{
    LPUIPRIV lpUIPriv;

    lpUIPriv = (LPUIPRIV)GetWindowLong(hUIWnd, IMMGWL_PRIVATE);
    if (!lpUIPriv) {
        return;
    }

    if (!(lpUIPriv->fdwUIFlags & UI_COMP_ALREADY_START)) {
        return;
    }

    lpUIPriv->fdwUIFlags &= ~(UI_COMP_ALREADY_START);

    if (lpUIPriv->hCompWnd && IsWindowVisible(lpUIPriv->hCompWnd)) {
        ShowWindow(lpUIPriv->hCompWnd, SW_HIDE);
    }

    return;
}