listview.c

winNT技术操作系统,国外开放的原代码和LIUX一样

}

static BOOL notify_click(LISTVIEW_INFO *infoPtr,  INT code, LVHITTESTINFO *lvht)
{
    NMLISTVIEW nmlv;
    LVITEMW item;
    HWND hwnd = infoPtr->hwndSelf;

    TRACE("code=%d, lvht=%s\n", code, debuglvhittestinfo(lvht)); 
    ZeroMemory(&nmlv, sizeof(nmlv));
    nmlv.iItem = lvht->iItem;
    nmlv.iSubItem = lvht->iSubItem;
    nmlv.ptAction = lvht->pt;
    item.mask = LVIF_PARAM;
    item.iItem = lvht->iItem;
    item.iSubItem = 0;
    if (LISTVIEW_GetItemT(infoPtr, &item, TRUE)) nmlv.lParam = item.lParam;
    notify_listview(infoPtr, code, &nmlv);
    return IsWindow(hwnd);
}

static BOOL notify_deleteitem(LISTVIEW_INFO *infoPtr, INT nItem)
{
    NMLISTVIEW nmlv;
    LVITEMW item;
    HWND hwnd = infoPtr->hwndSelf;

    ZeroMemory(&nmlv, sizeof (NMLISTVIEW));
    nmlv.iItem = nItem;
    item.mask = LVIF_PARAM;
    item.iItem = nItem;
    item.iSubItem = 0;
    if (LISTVIEW_GetItemT(infoPtr, &item, TRUE)) nmlv.lParam = item.lParam;
    notify_listview(infoPtr, LVN_DELETEITEM, &nmlv);
    return IsWindow(hwnd);
}

static int get_ansi_notification(INT unicodeNotificationCode)
{
    switch (unicodeNotificationCode)
    {
    case LVN_BEGINLABELEDITW: return LVN_BEGINLABELEDITA;
    case LVN_ENDLABELEDITW: return LVN_ENDLABELEDITA;
    case LVN_GETDISPINFOW: return LVN_GETDISPINFOA;
    case LVN_SETDISPINFOW: return LVN_SETDISPINFOA;
    case LVN_ODFINDITEMW: return LVN_ODFINDITEMA;
    case LVN_GETINFOTIPW: return LVN_GETINFOTIPA;
    }
    ERR("unknown notification %x\n", unicodeNotificationCode);
    assert(FALSE);
    return 0;
}

/*
  Send notification. depends on dispinfoW having same
  structure as dispinfoA.
  infoPtr : listview struct
  notificationCode : *Unicode* notification code
  pdi : dispinfo structure (can be unicode or ansi)
  isW : TRUE if dispinfo is Unicode
*/
static BOOL notify_dispinfoT(LISTVIEW_INFO *infoPtr, INT notificationCode, LPNMLVDISPINFOW pdi, BOOL isW)
{
    BOOL bResult = FALSE;
    BOOL convertToAnsi = FALSE, convertToUnicode = FALSE;
    INT cchTempBufMax = 0, savCchTextMax = 0, realNotifCode;
    LPWSTR pszTempBuf = NULL, savPszText = NULL;

    if ((pdi->item.mask & LVIF_TEXT) && is_textT(pdi->item.pszText, isW))
    {
	convertToAnsi = (isW && infoPtr->notifyFormat == NFR_ANSI);
	convertToUnicode = (!isW && infoPtr->notifyFormat == NFR_UNICODE);
    }

    if (convertToAnsi || convertToUnicode)
    {
	if (notificationCode != LVN_GETDISPINFOW)
 	{
 	    cchTempBufMax = convertToUnicode ?
       		MultiByteToWideChar(CP_ACP, 0, (LPCSTR)pdi->item.pszText, -1, NULL, 0):
       		WideCharToMultiByte(CP_ACP, 0, pdi->item.pszText, -1, NULL, 0, NULL, NULL);
	}
 	else
 	{
 	    cchTempBufMax = pdi->item.cchTextMax;
 	    *pdi->item.pszText = 0; /* make sure we don't process garbage */
 	}

	pszTempBuf = Alloc( (convertToUnicode ? sizeof(WCHAR) : sizeof(CHAR)) * cchTempBufMax);
        if (!pszTempBuf) return FALSE;

	if (convertToUnicode)
	    MultiByteToWideChar(CP_ACP, 0, (LPCSTR)pdi->item.pszText, -1,
	                        pszTempBuf, cchTempBufMax);
	else
	    WideCharToMultiByte(CP_ACP, 0, pdi->item.pszText, -1, (LPSTR) pszTempBuf,
	                        cchTempBufMax, NULL, NULL);

        savCchTextMax = pdi->item.cchTextMax;
        savPszText = pdi->item.pszText;
        pdi->item.pszText = pszTempBuf;
        pdi->item.cchTextMax = cchTempBufMax;
    }

    if (infoPtr->notifyFormat == NFR_ANSI)
	realNotifCode = get_ansi_notification(notificationCode);
    else
	realNotifCode = notificationCode;
    TRACE(" pdi->item=%s\n", debuglvitem_t(&pdi->item, infoPtr->notifyFormat != NFR_ANSI));
    bResult = notify_hdr(infoPtr, realNotifCode, &pdi->hdr);

    if (convertToUnicode || convertToAnsi)
    {
	if (convertToUnicode) /* note : pointer can be changed by app ! */
 	    WideCharToMultiByte(CP_ACP, 0, pdi->item.pszText, -1, (LPSTR) savPszText,
                                savCchTextMax, NULL, NULL);
	else
	    MultiByteToWideChar(CP_ACP, 0, (LPSTR) pdi->item.pszText, -1,
	                        savPszText, savCchTextMax);
        pdi->item.pszText = savPszText; /* restores our buffer */
        pdi->item.cchTextMax = savCchTextMax;
        Free (pszTempBuf);
    }
    return bResult;
}

static void customdraw_fill(NMLVCUSTOMDRAW *lpnmlvcd, LISTVIEW_INFO *infoPtr, HDC hdc, 
			    const RECT *rcBounds, const LVITEMW *lplvItem)
{
    ZeroMemory(lpnmlvcd, sizeof(NMLVCUSTOMDRAW));
    lpnmlvcd->nmcd.hdc = hdc;
    lpnmlvcd->nmcd.rc = *rcBounds;
    lpnmlvcd->clrTextBk = infoPtr->clrTextBk;
    lpnmlvcd->clrText   = infoPtr->clrText;
    if (!lplvItem) return;
    lpnmlvcd->nmcd.dwItemSpec = lplvItem->iItem + 1;
    lpnmlvcd->iSubItem = lplvItem->iSubItem;
    if (lplvItem->state & LVIS_SELECTED) lpnmlvcd->nmcd.uItemState |= CDIS_SELECTED;
    if (lplvItem->state & LVIS_FOCUSED) lpnmlvcd->nmcd.uItemState |= CDIS_FOCUS;
    if (lplvItem->iItem == infoPtr->nHotItem) lpnmlvcd->nmcd.uItemState |= CDIS_HOT;
    lpnmlvcd->nmcd.lItemlParam = lplvItem->lParam;
}

static inline DWORD notify_customdraw (LISTVIEW_INFO *infoPtr, DWORD dwDrawStage, NMLVCUSTOMDRAW *lpnmlvcd)
{
    BOOL isForItem = (lpnmlvcd->nmcd.dwItemSpec != 0);
    DWORD result;

    lpnmlvcd->nmcd.dwDrawStage = dwDrawStage;
    if (isForItem) lpnmlvcd->nmcd.dwDrawStage |= CDDS_ITEM; 
    if (lpnmlvcd->iSubItem) lpnmlvcd->nmcd.dwDrawStage |= CDDS_SUBITEM;
    if (isForItem) lpnmlvcd->nmcd.dwItemSpec--;
    result = notify_hdr(infoPtr, NM_CUSTOMDRAW, &lpnmlvcd->nmcd.hdr);
    if (isForItem) lpnmlvcd->nmcd.dwItemSpec++;
    return result;
}

static void prepaint_setup (LISTVIEW_INFO *infoPtr, HDC hdc, NMLVCUSTOMDRAW *lpnmlvcd)
{
    /* apprently, for selected items, we have to override the returned values */
    if (lpnmlvcd->nmcd.uItemState & CDIS_SELECTED)
    {
	if (infoPtr->bFocus)
	{
	    lpnmlvcd->clrTextBk = comctl32_color.clrHighlight;
	    lpnmlvcd->clrText   = comctl32_color.clrHighlightText;
        }
	else if (infoPtr->dwStyle & LVS_SHOWSELALWAYS)
	{
	    lpnmlvcd->clrTextBk = comctl32_color.clr3dFace;
	    lpnmlvcd->clrText   = comctl32_color.clrBtnText;
	}
    }

    /* Set the text attributes */
    if (lpnmlvcd->clrTextBk != CLR_NONE)
    {
	SetBkMode(hdc, OPAQUE);
	if (lpnmlvcd->clrTextBk == CLR_DEFAULT)
	    SetBkColor(hdc, infoPtr->clrTextBkDefault);
	else
	    SetBkColor(hdc,lpnmlvcd->clrTextBk);
    }
    else
	SetBkMode(hdc, TRANSPARENT);
    SetTextColor(hdc, lpnmlvcd->clrText);
}

static inline DWORD notify_postpaint (LISTVIEW_INFO *infoPtr, NMLVCUSTOMDRAW *lpnmlvcd)
{
    return notify_customdraw(infoPtr, CDDS_POSTPAINT, lpnmlvcd);
}

/******** Item iterator functions **********************************/

static RANGES ranges_create(int count);
static void ranges_destroy(RANGES ranges);
static BOOL ranges_add(RANGES ranges, RANGE range);
static BOOL ranges_del(RANGES ranges, RANGE range);
static void ranges_dump(RANGES ranges);

static inline BOOL ranges_additem(RANGES ranges, INT nItem)
{
    RANGE range = { nItem, nItem + 1 };

    return ranges_add(ranges, range);
}

static inline BOOL ranges_delitem(RANGES ranges, INT nItem)
{
    RANGE range = { nItem, nItem + 1 };

    return ranges_del(ranges, range);
}

/***
 * ITERATOR DOCUMENTATION
 *
 * The iterator functions allow for easy, and convenient iteration
 * over items of iterest in the list. Typically, you create a
 * iterator, use it, and destroy it, as such:
 *   ITERATOR i;
 *
 *   iterator_xxxitems(&i, ...);
 *   while (iterator_{prev,next}(&i)
 *   {
 *       //code which uses i.nItem
 *   }
 *   iterator_destroy(&i);
 *
 *   where xxx is either: framed, or visible.
 * Note that it is important that the code destroys the iterator
 * after it's done with it, as the creation of the iterator may
 * allocate memory, which thus needs to be freed.
 * 
 * You can iterate both forwards, and backwards through the list,
 * by using iterator_next or iterator_prev respectively.
 * 
 * Lower numbered items are draw on top of higher number items in
 * LVS_ICON, and LVS_SMALLICON (which are the only modes where
 * items may overlap). So, to test items, you should use
 *    iterator_next
 * which lists the items top to bottom (in Z-order).
 * For drawing items, you should use
 *    iterator_prev
 * which lists the items bottom to top (in Z-order).
 * If you keep iterating over the items after the end-of-items
 * marker (-1) is returned, the iterator will start from the
 * beginning. Typically, you don't need to test for -1,
 * because iterator_{next,prev} will return TRUE if more items
 * are to be iterated over, or FALSE otherwise.
 *
 * Note: the iterator is defined to be bidirectional. That is,
 *       any number of prev followed by any number of next, or
 *       five versa, should leave the iterator at the same item:
 *           prev * n, next * n = next * n, prev * n
 *
 * The iterator has a notion of an out-of-order, special item,
 * which sits at the start of the list. This is used in
 * LVS_ICON, and LVS_SMALLICON mode to handle the focused item,
 * which needs to be first, as it may overlap other items.
 *           
 * The code is a bit messy because we have:
 *   - a special item to deal with
 *   - simple range, or composite range
 *   - empty range.
 * If you find bugs, or want to add features, please make sure you
 * always check/modify *both* iterator_prev, and iterator_next.
 */

/****
 * This function iterates through the items in increasing order,
 * but prefixed by the special item, then -1. That is:
 *    special, 1, 2, 3, ..., n, -1.
 * Each item is listed only once.
 */
static inline BOOL iterator_next(ITERATOR* i)
{
    if (i->nItem == -1)
    {
	i->nItem = i->nSpecial;
	if (i->nItem != -1) return TRUE;
    }
    if (i->nItem == i->nSpecial)
    {
	if (i->ranges) i->index = 0;
	goto pickarange;
    }

    i->nItem++;
testitem:
    if (i->nItem == i->nSpecial) i->nItem++;
    if (i->nItem < i->range.upper) return TRUE;

pickarange:
    if (i->ranges)
    {
	if (i->index < DPA_GetPtrCount(i->ranges->hdpa))
	    i->range = *(RANGE*)DPA_GetPtr(i->ranges->hdpa, i->index++);
	else goto end;
    }
    else if (i->nItem >= i->range.upper) goto end;

    i->nItem = i->range.lower;
    if (i->nItem >= 0) goto testitem;
end:
    i->nItem = -1;
    return FALSE;
}

/****
 * This function iterates through the items in decreasing order,
 * followed by the special item, then -1. That is:
 *    n, n-1, ..., 3, 2, 1, special, -1.
 * Each item is listed only once.
 */
static inline BOOL iterator_prev(ITERATOR* i)
{
    BOOL start = FALSE;

    if (i->nItem == -1)
    {
	start = TRUE;
	if (i->ranges) i->index = DPA_GetPtrCount(i->ranges->hdpa);
	goto pickarange;
    }
    if (i->nItem == i->nSpecial)
    {
	i->nItem = -1;
	return FALSE;
    }

testitem:
    i->nItem--;
    if (i->nItem == i->nSpecial) i->nItem--;
    if (i->nItem >= i->range.lower) return TRUE;

pickarange:
    if (i->ranges)
    {
	if (i->index > 0)
	    i->range = *(RANGE*)DPA_GetPtr(i->ranges->hdpa, --i->index);
	else goto end;
    }
    else if (!start && i->nItem < i->range.lower) goto end;

    i->nItem = i->range.upper;
    if (i->nItem > 0) goto testitem;
end:
    return (i->nItem = i->nSpecial) != -1;
}

static RANGE iterator_range(ITERATOR* i)
{
    RANGE range;

    if (!i->ranges) return i->range;

    if (DPA_GetPtrCount(i->ranges->hdpa) > 0)
    {
        range.lower = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, 0)).lower;
        range.upper = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, DPA_GetPtrCount(i->ranges->hdpa) - 1)).upper;
    }
    else range.lower = range.upper = 0;

    return range;
}

/***
 * Releases resources associated with this ierator.
 */
static inline void iterator_destroy(ITERATOR* i)
{
    ranges_destroy(i->ranges);
}

/***
 * Create an empty iterator.
 */
static inline BOOL iterator_empty(ITERATOR* i)
{
    ZeroMemory(i, sizeof(*i));
    i->nItem = i->nSpecial = i->range.lower = i->range.upper = -1;
    return TRUE;
}

/***
 * Create an iterator over a range.
 */
static inline BOOL iterator_rangeitems(ITERATOR* i, RANGE range)
{
    iterator_empty(i);
    i->range = range;
    return TRUE;
}