comboex.c

winNT技术操作系统,国外开放的原代码和LIUX一样

    x = xioff + CBE_STARTOFFSET + 1;
    w = rect.right-rect.left - x - GetSystemMetrics(SM_CXVSCROLL) - 1;
    h = mysize.cy + 1;
    y = rect.bottom - h - 1;

    TRACE("Combo client (%d,%d)-(%d,%d), setting Edit to (%d,%d)-(%d,%d)\n",
	  rect.left, rect.top, rect.right, rect.bottom, x, y, x + w, y + h);
    SetWindowPos(infoPtr->hwndEdit, HWND_TOP, x, y, w, h,
		 SWP_SHOWWINDOW | SWP_NOACTIVATE | SWP_NOZORDER);
}


static void COMBOEX_ReSize (COMBOEX_INFO *infoPtr)
{
    SIZE mysize;
    LONG cy;
    IMAGEINFO iinfo;

    COMBOEX_GetComboFontSize (infoPtr, &mysize);
    cy = mysize.cy + CBE_EXTRA;
    if (infoPtr->himl && ImageList_GetImageInfo(infoPtr->himl, 0, &iinfo)) {
	cy = max (iinfo.rcImage.bottom - iinfo.rcImage.top, cy);
	TRACE("upgraded height due to image:  height=%d\n", cy);
    }
    SendMessageW (infoPtr->hwndSelf, CB_SETITEMHEIGHT, (WPARAM)-1, (LPARAM)cy);
    if (infoPtr->hwndCombo) {
        SendMessageW (infoPtr->hwndCombo, CB_SETITEMHEIGHT,
		      (WPARAM) 0, (LPARAM) cy);
	if ( !(infoPtr->flags & CBES_EX_NOSIZELIMIT)) {
	    RECT comboRect;
	    if (GetWindowRect(infoPtr->hwndCombo, &comboRect)) {
		RECT ourRect;
		if (GetWindowRect(infoPtr->hwndSelf, &ourRect)) {
		    if (comboRect.bottom > ourRect.bottom) {
			POINT pt = { ourRect.left, ourRect.top };
			if (ScreenToClient(infoPtr->hwndSelf, &pt))
			    MoveWindow( infoPtr->hwndSelf, pt.x, pt.y, ourRect.right - ourRect.left,
					comboRect.bottom - comboRect.top, FALSE);
		    }
		}
	    }
	}
    }
}


static void COMBOEX_SetEditText (COMBOEX_INFO *infoPtr, CBE_ITEMDATA *item)
{
    if (!infoPtr->hwndEdit) return;
    /* native issues the following messages to the {Edit} control */
    /*      WM_SETTEXT (0,addr)     */
    /*      EM_SETSEL32 (0,0)       */
    /*      EM_SETSEL32 (0,-1)      */
    if (item->mask & CBEIF_TEXT) {
	SendMessageW (infoPtr->hwndEdit, WM_SETTEXT, 0, (LPARAM)COMBOEX_GetText(infoPtr, item));
	SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, 0);
	SendMessageW (infoPtr->hwndEdit, EM_SETSEL, 0, -1);
    }
}


static CBE_ITEMDATA * COMBOEX_FindItem(COMBOEX_INFO *infoPtr, INT index)
{
    CBE_ITEMDATA *item;
    INT i;

    if ((index >= infoPtr->nb_items) || (index < -1))
	return 0;
    if (index == -1)
	return infoPtr->edit;
    item = infoPtr->items;
    i = infoPtr->nb_items - 1;

    /* find the item in the list */
    while (item && (i > index)) {
	item = item->next;
	i--;
    }
    if (!item || (i != index)) {
	ERR("COMBOBOXEX item structures broken. Please report!\n");
	return 0;
    }
    return item;
}


static inline BOOL COMBOEX_HasEdit(COMBOEX_INFO *infoPtr)
{
    return infoPtr->hwndEdit ? TRUE : FALSE;
}


/* ***  CBEM_xxx message support  *** */

static UINT COMBOEX_GetListboxText(COMBOEX_INFO *infoPtr, int n, LPWSTR buf)
{
    CBE_ITEMDATA *item;
    LPCWSTR str;

    item = COMBOEX_FindItem(infoPtr, n);
    if (!item)
        return 0;

    str = COMBOEX_GetText(infoPtr, item);

    if (infoPtr->unicode)
    {
        if (buf)
            lstrcpyW(buf, str);
        return lstrlenW(str);
    }
    else
    {
        UINT r;
        r = WideCharToMultiByte(CP_ACP, 0, str, -1, (LPSTR)buf, 0x40000000, NULL, NULL);
        if (r) r--;
        return r;
    }
}


static INT COMBOEX_DeleteItem (COMBOEX_INFO *infoPtr, INT index)
{
    CBE_ITEMDATA *item;

    TRACE("(index=%d)\n", index);

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < 0)) return CB_ERR;
    if (!(item = COMBOEX_FindItem(infoPtr, index))) return CB_ERR;

    /* doing this will result in WM_DELETEITEM being issued */
    SendMessageW (infoPtr->hwndCombo, CB_DELETESTRING, (WPARAM)index, 0);

    return infoPtr->nb_items;
}


static BOOL COMBOEX_GetItemW (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW *cit)
{
    INT index = cit->iItem;
    CBE_ITEMDATA *item;

    TRACE("(...)\n");

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < -1)) return FALSE;

    /* if the item is the edit control and there is no edit control, skip */
    if ((index == -1) && !COMBOEX_HasEdit(infoPtr)) return FALSE;

    if (!(item = COMBOEX_FindItem(infoPtr, index))) return FALSE;

    COMBOEX_CopyItem (item, cit);

    return TRUE;
}


static BOOL COMBOEX_GetItemA (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA *cit)
{
    COMBOBOXEXITEMW tmpcit;

    TRACE("(...)\n");

    tmpcit.mask = cit->mask;
    tmpcit.iItem = cit->iItem;
    tmpcit.pszText = 0;
    if(!COMBOEX_GetItemW (infoPtr, &tmpcit)) return FALSE;

    if (is_textW(tmpcit.pszText) && cit->pszText)
        WideCharToMultiByte (CP_ACP, 0, tmpcit.pszText, -1,
			     cit->pszText, cit->cchTextMax, NULL, NULL);
    else if (cit->pszText) cit->pszText[0] = 0;
    else cit->pszText = (LPSTR)tmpcit.pszText;

    cit->iImage = tmpcit.iImage;
    cit->iSelectedImage = tmpcit.iSelectedImage;
    cit->iOverlay = tmpcit.iOverlay;
    cit->iIndent = tmpcit.iIndent;
    cit->lParam = tmpcit.lParam;

    return TRUE;
}


inline static BOOL COMBOEX_HasEditChanged (COMBOEX_INFO *infoPtr)
{
    return COMBOEX_HasEdit(infoPtr) &&
	   (infoPtr->flags & WCBE_EDITHASCHANGED) == WCBE_EDITHASCHANGED;
}


static INT COMBOEX_InsertItemW (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW *cit)
{
    INT index;
    CBE_ITEMDATA *item;
    NMCOMBOBOXEXW nmcit;

    TRACE("\n");

    if (TRACE_ON(comboex)) COMBOEX_DumpInput (cit);

    /* get real index of item to insert */
    index = cit->iItem;
    if (index == -1) index = infoPtr->nb_items;
    if (index > infoPtr->nb_items) return -1;

    /* get zero-filled space and chain it in */
    if(!(item = (CBE_ITEMDATA *)Alloc (sizeof(*item)))) return -1;

    /* locate position to insert new item in */
    if (index == infoPtr->nb_items) {
        /* fast path for iItem = -1 */
        item->next = infoPtr->items;
	infoPtr->items = item;
    }
    else {
        INT i = infoPtr->nb_items-1;
	CBE_ITEMDATA *moving = infoPtr->items;

	while ((i > index) && moving) {
	    moving = moving->next;
	    i--;
	}
	if (!moving) {
	    ERR("COMBOBOXEX item structures broken. Please report!\n");
	    Free(item);
	    return -1;
	}
	item->next = moving->next;
	moving->next = item;
    }

    /* fill in our hidden item structure */
    item->mask = cit->mask;
    if (item->mask & CBEIF_TEXT) {
	INT len = 0;

        if (is_textW(cit->pszText)) len = strlenW (cit->pszText);
	if (len > 0) {
	    item->pszText = (LPWSTR)Alloc ((len + 1)*sizeof(WCHAR));
	    if (!item->pszText) {
		Free(item);
		return -1;
	    }
	    strcpyW (item->pszText, cit->pszText);
	}
	else if (cit->pszText == LPSTR_TEXTCALLBACKW)
	    item->pszText = LPSTR_TEXTCALLBACKW;
        item->cchTextMax = cit->cchTextMax;
    }
    if (item->mask & CBEIF_IMAGE)
        item->iImage = cit->iImage;
    if (item->mask & CBEIF_SELECTEDIMAGE)
        item->iSelectedImage = cit->iSelectedImage;
    if (item->mask & CBEIF_OVERLAY)
        item->iOverlay = cit->iOverlay;
    if (item->mask & CBEIF_INDENT)
        item->iIndent = cit->iIndent;
    if (item->mask & CBEIF_LPARAM)
        item->lParam = cit->lParam;
    infoPtr->nb_items++;

    if (TRACE_ON(comboex)) COMBOEX_DumpItem (item);

    SendMessageW (infoPtr->hwndCombo, CB_INSERTSTRING,
		  (WPARAM)cit->iItem, (LPARAM)item);

    memset (&nmcit.ceItem, 0, sizeof(nmcit.ceItem));
    COMBOEX_CopyItem (item, &nmcit.ceItem);
    COMBOEX_NotifyItem (infoPtr, CBEN_INSERTITEM, &nmcit);

    return index;

}


static INT COMBOEX_InsertItemA (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA *cit)
{
    COMBOBOXEXITEMW citW;
    LPWSTR wstr = NULL;
    INT	ret;

    memcpy(&citW,cit,sizeof(COMBOBOXEXITEMA));
    if (cit->mask & CBEIF_TEXT && is_textA(cit->pszText)) {
	INT len = MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, NULL, 0);
	wstr = (LPWSTR)Alloc ((len + 1)*sizeof(WCHAR));
	if (!wstr) return -1;
	MultiByteToWideChar (CP_ACP, 0, cit->pszText, -1, wstr, len);
	citW.pszText = wstr;
    }
    ret = COMBOEX_InsertItemW(infoPtr, &citW);

    if (wstr) Free(wstr);

    return ret;
}


static DWORD
COMBOEX_SetExtendedStyle (COMBOEX_INFO *infoPtr, DWORD mask, DWORD style)
{
    DWORD dwTemp;

    TRACE("(mask=x%08x, style=0x%08x)\n", mask, style);

    dwTemp = infoPtr->dwExtStyle;

    if (mask)
	infoPtr->dwExtStyle = (infoPtr->dwExtStyle & ~mask) | style;
    else
	infoPtr->dwExtStyle = style;

    /* see if we need to change the word break proc on the edit */
    if ((infoPtr->dwExtStyle ^ dwTemp) & CBES_EX_PATHWORDBREAKPROC)
        SetPathWordBreakProc(infoPtr->hwndEdit, 
            (infoPtr->dwExtStyle & CBES_EX_PATHWORDBREAKPROC) ? TRUE : FALSE);

    /* test if the control's appearance has changed */
    mask = CBES_EX_NOEDITIMAGE | CBES_EX_NOEDITIMAGEINDENT;
    if ((infoPtr->dwExtStyle & mask) != (dwTemp & mask)) {
	/* if state of EX_NOEDITIMAGE changes, invalidate all */
	TRACE("EX_NOEDITIMAGE state changed to %d\n",
	      infoPtr->dwExtStyle & CBES_EX_NOEDITIMAGE);
	InvalidateRect (infoPtr->hwndSelf, NULL, TRUE);
	COMBOEX_AdjustEditPos (infoPtr);
	if (infoPtr->hwndEdit)
	    InvalidateRect (infoPtr->hwndEdit, NULL, TRUE);
    }

    return dwTemp;
}


static HIMAGELIST COMBOEX_SetImageList (COMBOEX_INFO *infoPtr, HIMAGELIST himl)
{
    HIMAGELIST himlTemp = infoPtr->himl;

    TRACE("(...)\n");

    infoPtr->himl = himl;

    COMBOEX_ReSize (infoPtr);
    InvalidateRect (infoPtr->hwndCombo, NULL, TRUE);

    /* reposition the Edit control based on whether icon exists */
    COMBOEX_AdjustEditPos (infoPtr);
    return himlTemp;
}

static BOOL COMBOEX_SetItemW (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW *cit)
{
    INT index = cit->iItem;
    CBE_ITEMDATA *item;

    if (TRACE_ON(comboex)) COMBOEX_DumpInput (cit);

    /* if item number requested does not exist then return failure */
    if ((index >= infoPtr->nb_items) || (index < -1)) return FALSE;

    /* if the item is the edit control and there is no edit control, skip */
    if ((index == -1) && !COMBOEX_HasEdit(infoPtr)) return FALSE;

    if (!(item = COMBOEX_FindItem(infoPtr, index))) return FALSE;

    /* add/change stuff to the internal item structure */
    item->mask |= cit->mask;
    if (cit->mask & CBEIF_TEXT) {
	INT len = 0;

	COMBOEX_FreeText(item);
        if (is_textW(cit->pszText)) len = strlenW(cit->pszText);
	if (len > 0) {
	    item->pszText = (LPWSTR)Alloc ((len + 1)*sizeof(WCHAR));
	    if (!item->pszText) return FALSE;
	    strcpyW(item->pszText, cit->pszText);
	} else if (cit->pszText == LPSTR_TEXTCALLBACKW)
	    item->pszText = LPSTR_TEXTCALLBACKW;
        item->cchTextMax = cit->cchTextMax;
    }
    if (cit->mask & CBEIF_IMAGE)
        item->iImage = cit->iImage;
    if (cit->mask & CBEIF_SELECTEDIMAGE)
        item->iSelectedImage = cit->iSelectedImage;
    if (cit->mask & CBEIF_OVERLAY)
        item->iOverlay = cit->iOverlay;
    if (cit->mask & CBEIF_INDENT)
        item->iIndent = cit->iIndent;
    if (cit->mask & CBEIF_LPARAM)
        cit->lParam = cit->lParam;

    if (TRACE_ON(comboex)) COMBOEX_DumpItem (item);

    /* if original request was to update edit control, do some fast foot work */
    if (cit->iItem == -1) {
	COMBOEX_SetEditText (infoPtr, item);
	RedrawWindow (infoPtr->hwndCombo, 0, 0, RDW_ERASE | RDW_INVALIDATE);
    }
    return TRUE;
}

static BOOL COMBOEX_SetItemA (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMA *cit)
{
    COMBOBOXEXITEMW citW;
    LPWSTR wstr = NULL;
    BOOL ret;

    memcpy(&citW, cit, sizeof(COMBOBOXEXITEMA));