comboex.c

winNT技术操作系统,国外开放的原代码和LIUX一样

	infoPtr->selected = oldItem;
	COMBOEX_SetEditText (infoPtr, item);
	return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);

    case CBN_SELENDOK:
	/*
	 * We have to change the handle since we are the control
	 * issuing the message. IE4 depends on this.
	 */
	return SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);

    case CBN_KILLFOCUS:
	/*
	 * from native trace:
	 *
	 *  pass to parent
	 *  WM_GETTEXT(Edit, 104)
	 *  CB_GETCURSEL(Combo) rets -1
	 *  WM_NOTIFY(CBEN_ENDEDITA) with CBENF_KILLFOCUS
	 *  CB_GETCURSEL(Combo)
	 *  InvalidateRect(Combo, 0, 0)
	 *  return 0
	 */
	SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
	if (infoPtr->flags & WCBE_ACTEDIT) {
	    GetWindowTextW (infoPtr->hwndEdit, wintext, 260);
	    cbeend.fChanged = (infoPtr->flags & WCBE_EDITCHG);
	    cbeend.iNewSelection = SendMessageW (infoPtr->hwndCombo,
						 CB_GETCURSEL, 0, 0);
	    cbeend.iWhy = CBENF_KILLFOCUS;

	    infoPtr->flags &= ~(WCBE_ACTEDIT | WCBE_EDITCHG);
	    if (COMBOEX_NotifyEndEdit (infoPtr, &cbeend, wintext)) return 0;
	}
	/* possible CB_GETCURSEL */
	InvalidateRect (infoPtr->hwndCombo, 0, 0);
	return 0;

    default:
	/*
	 * We have to change the handle since we are the control
	 * issuing the message. IE4 depends on this.
	 * We also need to set the focus back to the Edit control
	 * after passing the command to the parent of the ComboEx.
	 */
	lret = SendMessageW (parent, WM_COMMAND, wParam, (LPARAM)infoPtr->hwndSelf);
	if (infoPtr->hwndEdit)
	    SetFocus(infoPtr->hwndEdit);
	return lret;
    }
    return 0;
}


static BOOL COMBOEX_WM_DeleteItem (COMBOEX_INFO *infoPtr, DELETEITEMSTRUCT *dis)
{
    CBE_ITEMDATA *item, *olditem;
    NMCOMBOBOXEXW nmcit;
    UINT i;

    TRACE("CtlType=%08x, CtlID=%08x, itemID=%08x, hwnd=%p, data=%08lx\n",
	  dis->CtlType, dis->CtlID, dis->itemID, dis->hwndItem, dis->itemData);

    if (dis->itemID >= infoPtr->nb_items) return FALSE;

    olditem = infoPtr->items;
    i = infoPtr->nb_items - 1;

    if (i == dis->itemID) {
	infoPtr->items = infoPtr->items->next;
    }
    else {
	item = olditem;
	i--;

	/* find the prior item in the list */
	while (item->next && (i > dis->itemID)) {
	    item = item->next;
	    i--;
	}
	if (!item->next || (i != dis->itemID)) {
	    ERR("COMBOBOXEX item structures broken. Please report!\n");
	    return FALSE;
	}
	olditem = item->next;
	item->next = item->next->next;
    }
    infoPtr->nb_items--;

    memset (&nmcit.ceItem, 0, sizeof(nmcit.ceItem));
    COMBOEX_CopyItem (olditem, &nmcit.ceItem);
    COMBOEX_NotifyItem (infoPtr, CBEN_DELETEITEM, &nmcit);

    COMBOEX_FreeText(olditem);
    Free(olditem);

    return TRUE;
}


static LRESULT COMBOEX_DrawItem (COMBOEX_INFO *infoPtr, DRAWITEMSTRUCT *dis)
{
    static const WCHAR nil[] = { 0 };
    CBE_ITEMDATA *item = 0;
    SIZE txtsize;
    RECT rect;
    LPCWSTR str = nil;
    UINT xbase, x, y;
    INT len;
    COLORREF nbkc, ntxc, bkc, txc;
    int drawimage, drawstate, xioff;

    if (!IsWindowEnabled(infoPtr->hwndCombo)) return 0;

    TRACE("DRAWITEMSTRUCT: CtlType=0x%08x CtlID=0x%08x\n",
	  dis->CtlType, dis->CtlID);
    TRACE("itemID=0x%08x itemAction=0x%08x itemState=0x%08x\n",
	  dis->itemID, dis->itemAction, dis->itemState);
    TRACE("hWnd=%p hDC=%p (%d,%d)-(%d,%d) itemData=0x%08lx\n",
	  dis->hwndItem, dis->hDC, dis->rcItem.left,
	  dis->rcItem.top, dis->rcItem.right, dis->rcItem.bottom,
	  dis->itemData);

    /* MSDN says:                                                       */
    /*     "itemID - Specifies the menu item identifier for a menu      */
    /*      item or the index of the item in a list box or combo box.   */
    /*      For an empty list box or combo box, this member can be -1.  */
    /*      This allows the application to draw only the focus          */
    /*      rectangle at the coordinates specified by the rcItem        */
    /*      member even though there are no items in the control.       */
    /*      This indicates to the user whether the list box or combo    */
    /*      box has the focus. How the bits are set in the itemAction   */
    /*      member determines whether the rectangle is to be drawn as   */
    /*      though the list box or combo box has the focus.             */
    if (dis->itemID == 0xffffffff) {
	if ( ( (dis->itemAction & ODA_FOCUS) && (dis->itemState & ODS_SELECTED)) ||
	     ( (dis->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)) && (dis->itemState & ODS_FOCUS) ) ) {

            TRACE("drawing item -1 special focus, rect=(%d,%d)-(%d,%d)\n",
		  dis->rcItem.left, dis->rcItem.top,
		  dis->rcItem.right, dis->rcItem.bottom);
	}
	else if ((dis->CtlType == ODT_COMBOBOX) &&
		 (dis->itemAction == ODA_DRAWENTIRE)) {
	    /* draw of edit control data */

	    /* testing */
	    {
		RECT exrc, cbrc, edrc;
		GetWindowRect (infoPtr->hwndSelf, &exrc);
		GetWindowRect (infoPtr->hwndCombo, &cbrc);
		edrc.left=edrc.top=edrc.right=edrc.bottom=-1;
		if (infoPtr->hwndEdit)
		    GetWindowRect (infoPtr->hwndEdit, &edrc);
		TRACE("window rects ex=(%d,%d)-(%d,%d), cb=(%d,%d)-(%d,%d), ed=(%d,%d)-(%d,%d)\n",
		      exrc.left, exrc.top, exrc.right, exrc.bottom,
		      cbrc.left, cbrc.top, cbrc.right, cbrc.bottom,
		      edrc.left, edrc.top, edrc.right, edrc.bottom);
	    }
	}
	else {
            ERR("NOT drawing item  -1 special focus, rect=(%d,%d)-(%d,%d), action=%08x, state=%08x\n",
		dis->rcItem.left, dis->rcItem.top,
		dis->rcItem.right, dis->rcItem.bottom,
		dis->itemAction, dis->itemState);
	    return 0;
	}
    }

    /* If draw item is -1 (edit control) setup the item pointer */
    if (dis->itemID == 0xffffffff) {
	item = infoPtr->edit;

	if (infoPtr->hwndEdit) {
	    INT len;

	    /* free previous text of edit item */
	    COMBOEX_FreeText(item);
	    item->mask &= ~CBEIF_TEXT;
	    if( (len = GetWindowTextLengthW(infoPtr->hwndEdit)) ) {
		item->mask |= CBEIF_TEXT;
		item->pszText = (LPWSTR)Alloc ((len + 1)*sizeof(WCHAR));
		if (item->pszText)
		    GetWindowTextW(infoPtr->hwndEdit, item->pszText, len+1);

	       TRACE("edit control hwndEdit=%p, text len=%d str=%s\n",
		     infoPtr->hwndEdit, len, debugstr_txt(item->pszText));
	    }
	}
    }


    /* if the item pointer is not set, then get the data and locate it */
    if (!item) {
        item = get_item_data(infoPtr, dis->itemID);
	if (item == (CBE_ITEMDATA *)CB_ERR) {
	    ERR("invalid item for id %d\n", dis->itemID);
	    return 0;
	}
    }

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

    xbase = CBE_STARTOFFSET;
    if ((item->mask & CBEIF_INDENT) && (dis->itemState & ODS_COMBOEXLBOX)) {
	INT indent = item->iIndent;
	if (indent == I_INDENTCALLBACK) {
	    NMCOMBOBOXEXW nmce;
	    ZeroMemory(&nmce, sizeof(nmce));
	    nmce.ceItem.mask = CBEIF_INDENT;
	    nmce.ceItem.lParam = item->lParam;
	    nmce.ceItem.iItem = dis->itemID;
	    COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
	    if (nmce.ceItem.mask & CBEIF_DI_SETITEM)
		item->iIndent = nmce.ceItem.iIndent;
	    indent = nmce.ceItem.iIndent;
	}
        xbase += (indent * CBE_INDENT);
    }

    drawimage = -2;
    drawstate = ILD_NORMAL;
    if (item->mask & CBEIF_IMAGE)
	drawimage = item->iImage;
    if (dis->itemState & ODS_COMBOEXLBOX) {
	/* drawing listbox entry */
	if (dis->itemState & ODS_SELECTED) {
	    if (item->mask & CBEIF_SELECTEDIMAGE)
	        drawimage = item->iSelectedImage;
	    drawstate = ILD_SELECTED;
	}
    } else {
	/* drawing combo/edit entry */
	if (IsWindowVisible(infoPtr->hwndEdit)) {
	    /* if we have an edit control, the slave the
             * selection state to the Edit focus state
	     */
	    if (infoPtr->flags & WCBE_EDITFOCUSED) {
	        if (item->mask & CBEIF_SELECTEDIMAGE)
		    drawimage = item->iSelectedImage;
		drawstate = ILD_SELECTED;
	    }
	} else {
	    /* if we don't have an edit control, use
	     * the requested state.
	     */
	    if (dis->itemState & ODS_SELECTED) {
		if (item->mask & CBEIF_SELECTEDIMAGE)
		    drawimage = item->iSelectedImage;
		drawstate = ILD_SELECTED;
	    }
	}
    }

    if (infoPtr->himl && !(infoPtr->dwExtStyle & CBES_EX_NOEDITIMAGEINDENT)) {
    	IMAGEINFO iinfo;
        iinfo.rcImage.left = iinfo.rcImage.right = 0;
	ImageList_GetImageInfo(infoPtr->himl, 0, &iinfo);
	xioff = iinfo.rcImage.right - iinfo.rcImage.left + CBE_SEP;
    }  else xioff = 0;

    /* setup pointer to text to be drawn */
    str = COMBOEX_GetText(infoPtr, item);
    if (!str) str = nil;

    len = strlenW (str);
    GetTextExtentPoint32W (dis->hDC, str, len, &txtsize);

    if (dis->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)) {
	int overlay = item->iOverlay;

    	if (drawimage == I_IMAGECALLBACK) {
	    NMCOMBOBOXEXW nmce;
	    ZeroMemory(&nmce, sizeof(nmce));
	    nmce.ceItem.mask = (drawstate == ILD_NORMAL) ? CBEIF_IMAGE : CBEIF_SELECTEDIMAGE;
	    nmce.ceItem.lParam = item->lParam;
	    nmce.ceItem.iItem = dis->itemID;
	    COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
	    if (drawstate == ILD_NORMAL) {
	    	if (nmce.ceItem.mask & CBEIF_DI_SETITEM) item->iImage = nmce.ceItem.iImage;
	    	drawimage = nmce.ceItem.iImage;
	    } else if (drawstate == ILD_SELECTED) {
	        if (nmce.ceItem.mask & CBEIF_DI_SETITEM) item->iSelectedImage = nmce.ceItem.iSelectedImage;
	        drawimage =  nmce.ceItem.iSelectedImage;
	    } else ERR("Bad draw state = %d\n", drawstate);
        }

	if (overlay == I_IMAGECALLBACK) {
	    NMCOMBOBOXEXW nmce;
	    ZeroMemory(&nmce, sizeof(nmce));
	    nmce.ceItem.mask = CBEIF_OVERLAY;
	    nmce.ceItem.lParam = item->lParam;
	    nmce.ceItem.iItem = dis->itemID;
	    COMBOEX_NotifyItem(infoPtr, CBEN_GETDISPINFOW, &nmce);
	    if (nmce.ceItem.mask & CBEIF_DI_SETITEM)
		item->iOverlay = nmce.ceItem.iOverlay;
	    overlay = nmce.ceItem.iOverlay;
	}

	if (drawimage >= 0 &&
	    !(infoPtr->dwExtStyle & (CBES_EX_NOEDITIMAGE | CBES_EX_NOEDITIMAGEINDENT))) {
	    if (overlay > 0) ImageList_SetOverlayImage (infoPtr->himl, overlay, 1);
	    ImageList_Draw (infoPtr->himl, drawimage, dis->hDC, xbase, dis->rcItem.top,
			    drawstate | (overlay > 0 ? INDEXTOOVERLAYMASK(1) : 0));
	}

	/* now draw the text */
	if (!IsWindowVisible (infoPtr->hwndEdit)) {
	    nbkc = GetSysColor ((dis->itemState & ODS_SELECTED) ?
				COLOR_HIGHLIGHT : COLOR_WINDOW);
	    bkc = SetBkColor (dis->hDC, nbkc);
	    ntxc = GetSysColor ((dis->itemState & ODS_SELECTED) ?
				COLOR_HIGHLIGHTTEXT : COLOR_WINDOWTEXT);
	    txc = SetTextColor (dis->hDC, ntxc);
	    x = xbase + xioff;
	    y = dis->rcItem.top +
	        (dis->rcItem.bottom - dis->rcItem.top - txtsize.cy) / 2;
	    rect.left = x;
	    rect.right = x + txtsize.cx;
	    rect.top = dis->rcItem.top + 1;
	    rect.bottom = dis->rcItem.bottom - 1;
            TRACE("drawing item %d text, rect=(%d,%d)-(%d,%d)\n",
	          dis->itemID, rect.left, rect.top, rect.right, rect.bottom);
	    ExtTextOutW (dis->hDC, x, y, ETO_OPAQUE | ETO_CLIPPED,
		         &rect, str, len, 0);
	    SetBkColor (dis->hDC, bkc);
	    SetTextColor (dis->hDC, txc);
	}
    }

    if (dis->itemAction & ODA_FOCUS) {
	rect.left = xbase + xioff - 1;
	rect.right = rect.left + txtsize.cx + 2;
	rect.top = dis->rcItem.top;
	rect.bottom = dis->rcItem.bottom;
	DrawFocusRect(dis->hDC, &rect);
    }

    return 0;
}


static LRESULT COMBOEX_Destroy (COMBOEX_INFO *infoPtr)
{
    if (infoPtr->hwndCombo)
	DestroyWindow (infoPtr->hwndCombo);

    if (infoPtr->edit) {
	Free (infoPtr->edit);
	infoPtr->edit = 0;
    }

    if (infoPtr->items) {
        CBE_ITEMDATA *item, *next;

	item = infoPtr->items;
	while (item) {
	    next = item->next;
	    COMBOEX_FreeText (item);
	    Free (item);
	    item = next;
	}
	infoPtr->items = 0;
    }

    if (infoPtr->defaultFont)
	DeleteObject (infoPtr->defaultFont);

    /* free comboex info data */
    Free (infoPtr);
    SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
    return 0;
}


static LRESULT COMBOEX_MeasureItem (COMBOEX_INFO *infoPtr, MEASUREITEMSTRUCT *mis)
{
    static const WCHAR strW[] = { 'W', 0 };
    SIZE mysize;
    HDC hdc;

    hdc = GetDC (0);
    GetTextExtentPointW (hdc, strW, 1, &mysize);
    ReleaseDC (0, hdc);
    mis->itemHeight = mysize.cy + CBE_EXTRA;

    TRACE("adjusted height hwnd=%p, height=%d\n",
	  infoPtr->hwndSelf, mis->itemHeight);

    return 0;
}


static LRESULT COMBOEX_NCCreate (HWND hwnd)
{
    /* WARNING: The COMBOEX_INFO structure is not yet created */
    DWORD oldstyle, newstyle;

    oldstyle = (DWORD)GetWindowLongW (hwnd, GWL_STYLE);
    newstyle = oldstyle & ~(WS_VSCROLL | WS_HSCROLL | WS_BORDER);
    if (newstyle != oldstyle) {
	TRACE("req style %08x, reseting style %08x\n",
	      oldstyle, newstyle);
	SetWindowLongW (hwnd, GWL_STYLE, newstyle);
    }
    return 1;
}