listview.c

winNT技术操作系统,国外开放的原代码和LIUX一样

/* Dump the LISTVIEW_INFO structure to the debug channel */
#define LISTVIEW_DUMP(iP) do { \
  TRACE("hwndSelf=%p, clrBk=0x%06x, clrText=0x%06x, clrTextBk=0x%06x, ItemHeight=%d, ItemWidth=%d, Style=0x%08x\n", \
        iP->hwndSelf, iP->clrBk, iP->clrText, iP->clrTextBk, \
        iP->nItemHeight, iP->nItemWidth, iP->dwStyle); \
  TRACE("hwndSelf=%p, himlNor=%p, himlSml=%p, himlState=%p, Focused=%d, Hot=%d, exStyle=0x%08x, Focus=%d\n", \
        iP->hwndSelf, iP->himlNormal, iP->himlSmall, iP->himlState, \
        iP->nFocusedItem, iP->nHotItem, iP->dwLvExStyle, iP->bFocus ); \
  TRACE("hwndSelf=%p, ntmH=%d, icSz.cx=%d, icSz.cy=%d, icSp.cx=%d, icSp.cy=%d, notifyFmt=%d\n", \
        iP->hwndSelf, iP->ntmHeight, iP->iconSize.cx, iP->iconSize.cy, \
        iP->iconSpacing.cx, iP->iconSpacing.cy, iP->notifyFormat); \
  TRACE("hwndSelf=%p, rcList=%s\n", iP->hwndSelf, wine_dbgstr_rect(&iP->rcList)); \
} while(0)

static const WCHAR themeClass[] = {'L','i','s','t','V','i','e','w',0};

/*
 * forward declarations
 */
static BOOL LISTVIEW_GetItemT(LISTVIEW_INFO *, LPLVITEMW, BOOL);
static void LISTVIEW_GetItemBox(LISTVIEW_INFO *, INT, LPRECT);
static void LISTVIEW_GetItemOrigin(LISTVIEW_INFO *, INT, LPPOINT);
static BOOL LISTVIEW_GetItemPosition(LISTVIEW_INFO *, INT, LPPOINT);
static BOOL LISTVIEW_GetItemRect(LISTVIEW_INFO *, INT, LPRECT);
static INT LISTVIEW_GetLabelWidth(LISTVIEW_INFO *, INT);
static void LISTVIEW_GetOrigin(LISTVIEW_INFO *, LPPOINT);
static BOOL LISTVIEW_GetViewRect(LISTVIEW_INFO *, LPRECT);
static void LISTVIEW_SetGroupSelection(LISTVIEW_INFO *, INT);
static BOOL LISTVIEW_SetItemT(LISTVIEW_INFO *, const LVITEMW *, BOOL);
static void LISTVIEW_UpdateScroll(LISTVIEW_INFO *);
static void LISTVIEW_SetSelection(LISTVIEW_INFO *, INT);
static void LISTVIEW_UpdateSize(LISTVIEW_INFO *);
static HWND LISTVIEW_EditLabelT(LISTVIEW_INFO *, INT, BOOL);
static LRESULT LISTVIEW_Command(LISTVIEW_INFO *, WPARAM, LPARAM);
static BOOL LISTVIEW_SortItems(LISTVIEW_INFO *, PFNLVCOMPARE, LPARAM);
static INT LISTVIEW_GetStringWidthT(LISTVIEW_INFO *, LPCWSTR, BOOL);
static BOOL LISTVIEW_KeySelection(LISTVIEW_INFO *, INT);
static UINT LISTVIEW_GetItemState(LISTVIEW_INFO *, INT, UINT);
static BOOL LISTVIEW_SetItemState(LISTVIEW_INFO *, INT, const LVITEMW *);
static LRESULT LISTVIEW_VScroll(LISTVIEW_INFO *, INT, INT, HWND);
static LRESULT LISTVIEW_HScroll(LISTVIEW_INFO *, INT, INT, HWND);
static INT LISTVIEW_GetTopIndex(LISTVIEW_INFO *);
static BOOL LISTVIEW_EnsureVisible(LISTVIEW_INFO *, INT, BOOL);
static HWND CreateEditLabelT(LISTVIEW_INFO *, LPCWSTR, DWORD, INT, INT, INT, INT, BOOL);
static HIMAGELIST LISTVIEW_SetImageList(LISTVIEW_INFO *, INT, HIMAGELIST);
static INT LISTVIEW_HitTest(LISTVIEW_INFO *, LPLVHITTESTINFO, BOOL, BOOL);

/******** Text handling functions *************************************/

/* A text pointer is either NULL, LPSTR_TEXTCALLBACK, or points to a
 * text string. The string may be ANSI or Unicode, in which case
 * the boolean isW tells us the type of the string.
 *
 * The name of the function tell what type of strings it expects:
 *   W: Unicode, T: ANSI/Unicode - function of isW
 */

static inline BOOL is_textW(LPCWSTR text)
{
    return text != NULL && text != LPSTR_TEXTCALLBACKW;
}

static inline BOOL is_textT(LPCWSTR text, BOOL isW)
{
    /* we can ignore isW since LPSTR_TEXTCALLBACKW == LPSTR_TEXTCALLBACKA */
    return is_textW(text);
}

static inline int textlenT(LPCWSTR text, BOOL isW)
{
    return !is_textT(text, isW) ? 0 :
	   isW ? lstrlenW(text) : lstrlenA((LPCSTR)text);
}

static inline void textcpynT(LPWSTR dest, BOOL isDestW, LPCWSTR src, BOOL isSrcW, INT max)
{
    if (isDestW)
	if (isSrcW) lstrcpynW(dest, src, max);
	else MultiByteToWideChar(CP_ACP, 0, (LPCSTR)src, -1, dest, max);
    else
	if (isSrcW) WideCharToMultiByte(CP_ACP, 0, src, -1, (LPSTR)dest, max, NULL, NULL);
	else lstrcpynA((LPSTR)dest, (LPCSTR)src, max);
}

static inline LPWSTR textdupTtoW(LPCWSTR text, BOOL isW)
{
    LPWSTR wstr = (LPWSTR)text;

    if (!isW && is_textT(text, isW))
    {
	INT len = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)text, -1, NULL, 0);
	wstr = Alloc(len * sizeof(WCHAR));
	if (wstr) MultiByteToWideChar(CP_ACP, 0, (LPCSTR)text, -1, wstr, len);
    }
    TRACE("   wstr=%s\n", text == LPSTR_TEXTCALLBACKW ?  "(callback)" : debugstr_w(wstr));
    return wstr;
}

static inline void textfreeT(LPWSTR wstr, BOOL isW)
{
    if (!isW && is_textT(wstr, isW)) Free (wstr);
}

/*
 * dest is a pointer to a Unicode string
 * src is a pointer to a string (Unicode if isW, ANSI if !isW)
 */
static BOOL textsetptrT(LPWSTR *dest, LPWSTR src, BOOL isW)
{
    BOOL bResult = TRUE;
    
    if (src == LPSTR_TEXTCALLBACKW)
    {
	if (is_textW(*dest)) Free(*dest);
	*dest = LPSTR_TEXTCALLBACKW;
    }
    else
    {
	LPWSTR pszText = textdupTtoW(src, isW);
	if (*dest == LPSTR_TEXTCALLBACKW) *dest = NULL;
	bResult = Str_SetPtrW(dest, pszText);
	textfreeT(pszText, isW);
    }
    return bResult;
}

/*
 * compares a Unicode to a Unicode/ANSI text string
 */
static inline int textcmpWT(LPCWSTR aw, LPCWSTR bt, BOOL isW)
{
    if (!aw) return bt ? -1 : 0;
    if (!bt) return aw ? 1 : 0;
    if (aw == LPSTR_TEXTCALLBACKW)
	return bt == LPSTR_TEXTCALLBACKW ? 0 : -1;
    if (bt != LPSTR_TEXTCALLBACKW)
    {
	LPWSTR bw = textdupTtoW(bt, isW);
	int r = bw ? lstrcmpW(aw, bw) : 1;
	textfreeT(bw, isW);
	return r;
    }	    
	    
    return 1;
}
    
static inline int lstrncmpiW(LPCWSTR s1, LPCWSTR s2, int n)
{
    int res;

    n = min(min(n, strlenW(s1)), strlenW(s2));
    res = CompareStringW(LOCALE_USER_DEFAULT, NORM_IGNORECASE, s1, n, s2, n);
    return res ? res - sizeof(WCHAR) : res;
}

/******** Debugging functions *****************************************/

static inline LPCSTR debugtext_t(LPCWSTR text, BOOL isW)
{
    if (text == LPSTR_TEXTCALLBACKW) return "(callback)";
    return isW ? debugstr_w(text) : debugstr_a((LPCSTR)text);
}

static inline LPCSTR debugtext_tn(LPCWSTR text, BOOL isW, INT n)
{
    if (text == LPSTR_TEXTCALLBACKW) return "(callback)";
    n = min(textlenT(text, isW), n);
    return isW ? debugstr_wn(text, n) : debugstr_an((LPCSTR)text, n);
}

static char* debug_getbuf(void)
{
    static int index = 0;
    static char buffers[DEBUG_BUFFERS][DEBUG_BUFFER_SIZE];
    return buffers[index++ % DEBUG_BUFFERS];
}

static inline const char* debugrange(const RANGE *lprng)
{
    if (!lprng) return "(null)";
    return wine_dbg_sprintf("[%d, %d)", lprng->lower, lprng->upper);
}

static const char* debugscrollinfo(const SCROLLINFO *pScrollInfo)
{
    char* buf = debug_getbuf(), *text = buf;
    int len, size = DEBUG_BUFFER_SIZE;

    if (pScrollInfo == NULL) return "(null)";
    len = snprintf(buf, size, "{cbSize=%d, ", pScrollInfo->cbSize);
    if (len == -1) goto end; buf += len; size -= len;
    if (pScrollInfo->fMask & SIF_RANGE)
	len = snprintf(buf, size, "nMin=%d, nMax=%d, ", pScrollInfo->nMin, pScrollInfo->nMax);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (pScrollInfo->fMask & SIF_PAGE)
	len = snprintf(buf, size, "nPage=%u, ", pScrollInfo->nPage);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (pScrollInfo->fMask & SIF_POS)
	len = snprintf(buf, size, "nPos=%d, ", pScrollInfo->nPos);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (pScrollInfo->fMask & SIF_TRACKPOS)
	len = snprintf(buf, size, "nTrackPos=%d, ", pScrollInfo->nTrackPos);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    goto undo;
end:
    buf = text + strlen(text);
undo:
    if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
    return text;
} 

static const char* debugnmlistview(const NMLISTVIEW *plvnm)
{
    if (!plvnm) return "(null)";
    return wine_dbg_sprintf("iItem=%d, iSubItem=%d, uNewState=0x%x,"
	         " uOldState=0x%x, uChanged=0x%x, ptAction=%s, lParam=%ld\n",
	         plvnm->iItem, plvnm->iSubItem, plvnm->uNewState, plvnm->uOldState,
		 plvnm->uChanged, wine_dbgstr_point(&plvnm->ptAction), plvnm->lParam);
}

static const char* debuglvitem_t(const LVITEMW *lpLVItem, BOOL isW)
{
    char* buf = debug_getbuf(), *text = buf;
    int len, size = DEBUG_BUFFER_SIZE;
    
    if (lpLVItem == NULL) return "(null)";
    len = snprintf(buf, size, "{iItem=%d, iSubItem=%d, ", lpLVItem->iItem, lpLVItem->iSubItem);
    if (len == -1) goto end; buf += len; size -= len;
    if (lpLVItem->mask & LVIF_STATE)
	len = snprintf(buf, size, "state=%x, stateMask=%x, ", lpLVItem->state, lpLVItem->stateMask);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpLVItem->mask & LVIF_TEXT)
	len = snprintf(buf, size, "pszText=%s, cchTextMax=%d, ", debugtext_tn(lpLVItem->pszText, isW, 80), lpLVItem->cchTextMax);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpLVItem->mask & LVIF_IMAGE)
	len = snprintf(buf, size, "iImage=%d, ", lpLVItem->iImage);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpLVItem->mask & LVIF_PARAM)
	len = snprintf(buf, size, "lParam=%lx, ", lpLVItem->lParam);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpLVItem->mask & LVIF_INDENT)
	len = snprintf(buf, size, "iIndent=%d, ", lpLVItem->iIndent);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    goto undo;
end:
    buf = text + strlen(text);
undo:
    if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
    return text;
}

static const char* debuglvcolumn_t(const LVCOLUMNW *lpColumn, BOOL isW)
{
    char* buf = debug_getbuf(), *text = buf;
    int len, size = DEBUG_BUFFER_SIZE;
    
    if (lpColumn == NULL) return "(null)";
    len = snprintf(buf, size, "{");
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_SUBITEM)
	len = snprintf(buf, size, "iSubItem=%d, ",  lpColumn->iSubItem);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_FMT)
	len = snprintf(buf, size, "fmt=%x, ", lpColumn->fmt);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_WIDTH)
	len = snprintf(buf, size, "cx=%d, ", lpColumn->cx);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_TEXT)
	len = snprintf(buf, size, "pszText=%s, cchTextMax=%d, ", debugtext_tn(lpColumn->pszText, isW, 80), lpColumn->cchTextMax);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_IMAGE)
	len = snprintf(buf, size, "iImage=%d, ", lpColumn->iImage);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    if (lpColumn->mask & LVCF_ORDER)
	len = snprintf(buf, size, "iOrder=%d, ", lpColumn->iOrder);
    else len = 0;
    if (len == -1) goto end; buf += len; size -= len;
    goto undo;
end:
    buf = text + strlen(text);
undo:
    if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
    return text;
}

static const char* debuglvhittestinfo(const LVHITTESTINFO *lpht)
{
    if (!lpht) return "(null)";

    return wine_dbg_sprintf("{pt=%s, flags=0x%x, iItem=%d, iSubItem=%d}",
		 wine_dbgstr_point(&lpht->pt), lpht->flags, lpht->iItem, lpht->iSubItem);
}

/* Return the corresponding text for a given scroll value */
static inline LPCSTR debugscrollcode(int nScrollCode)
{
  switch(nScrollCode)
  {
  case SB_LINELEFT: return "SB_LINELEFT";
  case SB_LINERIGHT: return "SB_LINERIGHT";
  case SB_PAGELEFT: return "SB_PAGELEFT";
  case SB_PAGERIGHT: return "SB_PAGERIGHT";
  case SB_THUMBPOSITION: return "SB_THUMBPOSITION";
  case SB_THUMBTRACK: return "SB_THUMBTRACK";
  case SB_ENDSCROLL: return "SB_ENDSCROLL";
  case SB_INTERNAL: return "SB_INTERNAL";
  default: return "unknown";
  }
}


/******** Notification functions i************************************/

static LRESULT notify_forward_header(LISTVIEW_INFO *infoPtr, const NMHEADERW *lpnmh)
{
    return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
                        (WPARAM)lpnmh->hdr.idFrom, (LPARAM)lpnmh);
}

static LRESULT notify_hdr(LISTVIEW_INFO *infoPtr, INT code, LPNMHDR pnmh)
{
    LRESULT result;
    
    TRACE("(code=%d)\n", code);

    pnmh->hwndFrom = infoPtr->hwndSelf;
    pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
    pnmh->code = code;
    result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
			  (WPARAM)pnmh->idFrom, (LPARAM)pnmh);

    TRACE("  <= %ld\n", result);

    return result;
}

static inline BOOL notify(LISTVIEW_INFO *infoPtr, INT code)
{
    NMHDR nmh;
    HWND hwnd = infoPtr->hwndSelf;
    notify_hdr(infoPtr, code, &nmh);
    return IsWindow(hwnd);
}

static inline void notify_itemactivate(LISTVIEW_INFO *infoPtr, LVHITTESTINFO *htInfo)
{
    NMITEMACTIVATE nmia;
    LVITEMW item;

    if (htInfo) {
      nmia.uNewState = 0;
      nmia.uOldState = 0;
      nmia.uChanged  = 0;
      nmia.uKeyFlags = 0;
      
      item.mask = LVIF_PARAM|LVIF_STATE;
      item.iItem = htInfo->iItem;
      item.iSubItem = 0;
      if (LISTVIEW_GetItemT(infoPtr, &item, TRUE)) {
	  nmia.lParam = item.lParam;
 	  nmia.uOldState = item.state;
	  nmia.uNewState = item.state | LVIS_ACTIVATING;
	  nmia.uChanged  = LVIF_STATE;
      }
      
      nmia.iItem = htInfo->iItem;
      nmia.iSubItem = htInfo->iSubItem;
      nmia.ptAction = htInfo->pt;     
      
      if (GetKeyState(VK_SHIFT) & 0x8000) nmia.uKeyFlags |= LVKF_SHIFT;
      if (GetKeyState(VK_CONTROL) & 0x8000) nmia.uKeyFlags |= LVKF_CONTROL;
      if (GetKeyState(VK_MENU) & 0x8000) nmia.uKeyFlags |= LVKF_ALT;
    }
    notify_hdr(infoPtr, LVN_ITEMACTIVATE, (LPNMHDR)&nmia);
}

static inline LRESULT notify_listview(LISTVIEW_INFO *infoPtr, INT code, LPNMLISTVIEW plvnm)
{
    TRACE("(code=%d, plvnm=%s)\n", code, debugnmlistview(plvnm));
    return notify_hdr(infoPtr, code, (LPNMHDR)plvnm);