status.c

winNT技术操作系统,国外开放的原代码和LIUX一样

static LRESULT
STATUSBAR_GetTextW (STATUS_INFO *infoPtr, INT nPart, LPWSTR buf)
{
    STATUSWINDOWPART *part;
    LRESULT result;

    TRACE("part %d\n", nPart);
    if (nPart < 0 || nPart >= infoPtr->numParts) return 0;

    if (infoPtr->simple)
	part = &infoPtr->part0;
    else
	part = &infoPtr->parts[nPart];

    if (part->style & SBT_OWNERDRAW)
	result = (LRESULT)part->text;
    else {
	result = part->text ? strlenW (part->text) : 0;
	result |= (part->style << 16);
	if (part->text && buf)
	    strcpyW (buf, part->text);
    }
    return result;
}


static LRESULT
STATUSBAR_GetTextLength (STATUS_INFO *infoPtr, INT nPart)
{
    STATUSWINDOWPART *part;
    DWORD result;

    TRACE("part %d\n", nPart);

    /* MSDN says: "simple parts use index of 0", so this check is ok. */
    if (nPart < 0 || nPart >= infoPtr->numParts) return 0;

    if (infoPtr->simple)
	part = &infoPtr->part0;
    else
	part = &infoPtr->parts[nPart];

    if ((~part->style & SBT_OWNERDRAW) && part->text)
	result = strlenW(part->text);
    else
	result = 0;

    result |= (part->style << 16);
    return result;
}

static LRESULT
STATUSBAR_GetTipTextA (STATUS_INFO *infoPtr, INT id, LPSTR tip, INT size)
{
    TRACE("\n");
    if (tip) {
        CHAR buf[INFOTIPSIZE];
        buf[0]='\0';

        if (infoPtr->hwndToolTip) {
            TTTOOLINFOA ti;
            ti.cbSize = sizeof(TTTOOLINFOA);
            ti.hwnd = infoPtr->Self;
            ti.uId = id;
            ti.lpszText = buf;
            SendMessageA (infoPtr->hwndToolTip, TTM_GETTEXTA, 0, (LPARAM)&ti);
        }
        lstrcpynA (tip, buf, size);
    }
    return 0;
}


static LRESULT
STATUSBAR_GetTipTextW (STATUS_INFO *infoPtr, INT id, LPWSTR tip, INT size)
{
    TRACE("\n");
    if (tip) {
        WCHAR buf[INFOTIPSIZE];
        buf[0]=0;

	if (infoPtr->hwndToolTip) {
	    TTTOOLINFOW ti;
	    ti.cbSize = sizeof(TTTOOLINFOW);
	    ti.hwnd = infoPtr->Self;
	    ti.uId = id;
            ti.lpszText = buf;
	    SendMessageW(infoPtr->hwndToolTip, TTM_GETTEXTW, 0, (LPARAM)&ti);
	}
	lstrcpynW(tip, buf, size);
    }

    return 0;
}


static COLORREF
STATUSBAR_SetBkColor (STATUS_INFO *infoPtr, COLORREF color)
{
    COLORREF oldBkColor;

    oldBkColor = infoPtr->clrBk;
    infoPtr->clrBk = color;
    InvalidateRect(infoPtr->Self, NULL, FALSE);

    TRACE("CREF: %08x -> %08x\n", oldBkColor, infoPtr->clrBk);
    return oldBkColor;
}


static BOOL
STATUSBAR_SetIcon (STATUS_INFO *infoPtr, INT nPart, HICON hIcon)
{
    if ((nPart < -1) || (nPart >= infoPtr->numParts))
	return FALSE;

    TRACE("setting part %d\n", nPart);

    /* FIXME: MSDN says "if nPart is -1, the status bar is assumed simple" */
    if (nPart == -1) {
	if (infoPtr->part0.hIcon == hIcon) /* same as - no redraw */
	    return TRUE;
	infoPtr->part0.hIcon = hIcon;
	if (infoPtr->simple)
            InvalidateRect(infoPtr->Self, &infoPtr->part0.bound, FALSE);
    } else {
	if (infoPtr->parts[nPart].hIcon == hIcon) /* same as - no redraw */
	    return TRUE;

	infoPtr->parts[nPart].hIcon = hIcon;
	if (!(infoPtr->simple))
            InvalidateRect(infoPtr->Self, &infoPtr->parts[nPart].bound, FALSE);
    }
    return TRUE;
}


static BOOL
STATUSBAR_SetMinHeight (STATUS_INFO *infoPtr, INT height)
{

    TRACE("(height=%d)\n", height);
    if (IsWindowVisible (infoPtr->Self)) {
	INT  width, x, y;
	RECT parent_rect;
        HTHEME theme;

	GetClientRect (infoPtr->Notify, &parent_rect);
	infoPtr->height = height + infoPtr->verticalBorder;
        
        if ((theme = GetWindowTheme (infoPtr->Self)))
        {
            /* Determine bar height from theme such that the content area is
             * 'height' pixels large */
            HDC hdc = GetDC (infoPtr->Self);
            RECT r;
            memset (&r, 0, sizeof (r));
            r.bottom = height;
            if (SUCCEEDED(GetThemeBackgroundExtent (theme, hdc, SP_PANE, 0, &r, &r)))
            {
                infoPtr->height = r.bottom - r.top;
            }
            ReleaseDC (infoPtr->Self, hdc);
        }
        
	width = parent_rect.right - parent_rect.left;
	x = parent_rect.left;
	y = parent_rect.bottom - infoPtr->height;
	MoveWindow (infoPtr->Self, parent_rect.left,
		    parent_rect.bottom - infoPtr->height,
		    width, infoPtr->height, TRUE);
	STATUSBAR_SetPartBounds (infoPtr);
    }

    return TRUE;
}


static BOOL
STATUSBAR_SetParts (STATUS_INFO *infoPtr, INT count, LPINT parts)
{
    STATUSWINDOWPART *tmp;
    int	i, oldNumParts;

    TRACE("(%d,%p)\n", count, parts);

    oldNumParts = infoPtr->numParts;
    infoPtr->numParts = count;
    if (oldNumParts > infoPtr->numParts) {
	for (i = infoPtr->numParts ; i < oldNumParts; i++) {
	    if (infoPtr->parts[i].text && !(infoPtr->parts[i].style & SBT_OWNERDRAW))
		Free (infoPtr->parts[i].text);
	}
    } else if (oldNumParts < infoPtr->numParts) {
	tmp = Alloc (sizeof(STATUSWINDOWPART) * infoPtr->numParts);
	if (!tmp) return FALSE;
	for (i = 0; i < oldNumParts; i++) {
	    tmp[i] = infoPtr->parts[i];
	}
	if (infoPtr->parts)
	    Free (infoPtr->parts);
	infoPtr->parts = tmp;
    }
    if (oldNumParts == infoPtr->numParts) {
	for (i=0; i < oldNumParts; i++)
	    if (infoPtr->parts[i].x != parts[i])
		break;
	if (i==oldNumParts) /* Unchanged? no need to redraw! */
	    return TRUE;
    }

    for (i = 0; i < infoPtr->numParts; i++)
	infoPtr->parts[i].x = parts[i];

    if (infoPtr->hwndToolTip) {
	INT nTipCount, i;
	TTTOOLINFOW ti;

	ZeroMemory (&ti, sizeof(TTTOOLINFOW));
	ti.cbSize = sizeof(TTTOOLINFOW);
	ti.hwnd = infoPtr->Self;

	nTipCount = SendMessageW (infoPtr->hwndToolTip, TTM_GETTOOLCOUNT, 0, 0);
	if (nTipCount < infoPtr->numParts) {
	    /* add tools */
	    for (i = nTipCount; i < infoPtr->numParts; i++) {
		TRACE("add tool %d\n", i);
		ti.uId = i;
		SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW,
				0, (LPARAM)&ti);
	    }
	}
	else if (nTipCount > infoPtr->numParts) {
	    /* delete tools */
	    for (i = nTipCount - 1; i >= infoPtr->numParts; i--) {
		TRACE("delete tool %d\n", i);
		ti.uId = i;
		SendMessageW (infoPtr->hwndToolTip, TTM_DELTOOLW,
				0, (LPARAM)&ti);
	    }
	}
    }
    STATUSBAR_SetPartBounds (infoPtr);
    InvalidateRect(infoPtr->Self, NULL, FALSE);
    return TRUE;
}


static BOOL
STATUSBAR_SetTextT (STATUS_INFO *infoPtr, INT nPart, WORD style,
		    LPCWSTR text, BOOL isW)
{
    STATUSWINDOWPART *part=NULL;
    BOOL changed = FALSE;
    INT  oldStyle;

    if (style & SBT_OWNERDRAW) {
         TRACE("part %d, text %p\n",nPart,text);
    }
    else TRACE("part %d, text %s\n", nPart, debugstr_t(text, isW));

    /* MSDN says: "If the parameter is set to SB_SIMPLEID (255), the status
     * window is assumed to be a simple window */

    if (nPart == 0x00ff) {
	part = &infoPtr->part0;
    } else {
	if (infoPtr->parts && nPart >= 0 && nPart < infoPtr->numParts) {
	    part = &infoPtr->parts[nPart];
	}
    }
    if (!part) return FALSE;

    if (part->style != style)
	changed = TRUE;

    oldStyle = part->style;
    part->style = style;
    if (style & SBT_OWNERDRAW) {
        if (!(oldStyle & SBT_OWNERDRAW)) {
            if (part->text)
                Free (part->text);
        } else if (part->text == text)
            return TRUE;
        part->text = (LPWSTR)text;
    } else {
	LPWSTR ntext;

	if (text && !isW) {
	    LPCSTR atxt = (LPCSTR)text;
            DWORD len = MultiByteToWideChar( CP_ACP, 0, atxt, -1, NULL, 0 );
	    ntext = Alloc( (len + 1)*sizeof(WCHAR) );
	    if (!ntext) return FALSE;
            MultiByteToWideChar( CP_ACP, 0, atxt, -1, ntext, len );
	} else if (text) {
	    ntext = Alloc( (strlenW(text) + 1)*sizeof(WCHAR) );
	    if (!ntext) return FALSE;
	    strcpyW (ntext, text);
	} else ntext = 0;

	/* check if text is unchanged -> no need to redraw */
	if (text) {
	    if (!changed && part->text && !lstrcmpW(ntext, part->text)) {
		Free(ntext);
		return TRUE;
	    }
	} else {
	    if (!changed && !part->text)
		return TRUE;
	}

	if (part->text && !(oldStyle & SBT_OWNERDRAW))
	    Free (part->text);
	part->text = ntext;
    }
    InvalidateRect(infoPtr->Self, &part->bound, FALSE);
    UpdateWindow(infoPtr->Self);

    return TRUE;
}


static LRESULT
STATUSBAR_SetTipTextA (STATUS_INFO *infoPtr, INT id, LPSTR text)
{
    TRACE("part %d: \"%s\"\n", id, text);
    if (infoPtr->hwndToolTip) {
	TTTOOLINFOA ti;
	ti.cbSize = sizeof(TTTOOLINFOA);
	ti.hwnd = infoPtr->Self;
	ti.uId = id;
	ti.hinst = 0;
	ti.lpszText = text;
	SendMessageA (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTA, 0, (LPARAM)&ti);
    }

    return 0;
}


static LRESULT
STATUSBAR_SetTipTextW (STATUS_INFO *infoPtr, INT id, LPWSTR text)
{
    TRACE("part %d: \"%s\"\n", id, debugstr_w(text));
    if (infoPtr->hwndToolTip) {
	TTTOOLINFOW ti;
	ti.cbSize = sizeof(TTTOOLINFOW);
	ti.hwnd = infoPtr->Self;
	ti.uId = id;
	ti.hinst = 0;
	ti.lpszText = text;
	SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
    }

    return 0;
}


inline static LRESULT
STATUSBAR_SetUnicodeFormat (STATUS_INFO *infoPtr, BOOL bUnicode)
{
    BOOL bOld = infoPtr->bUnicode;

    TRACE("(0x%x)\n", bUnicode);
    infoPtr->bUnicode = bUnicode;

    return bOld;
}


static BOOL
STATUSBAR_Simple (STATUS_INFO *infoPtr, BOOL simple)
{
    NMHDR  nmhdr;

    TRACE("(simple=%d)\n", simple);
    if (infoPtr->simple == simple) /* no need to change */
	return TRUE;

    infoPtr->simple = simple;

    /* send notification */
    nmhdr.hwndFrom = infoPtr->Self;
    nmhdr.idFrom = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
    nmhdr.code = SBN_SIMPLEMODECHANGE;
    SendMessageW (infoPtr->Notify, WM_NOTIFY, 0, (LPARAM)&nmhdr);
    InvalidateRect(infoPtr->Self, NULL, FALSE);
    return TRUE;
}


static LRESULT
STATUSBAR_WMDestroy (STATUS_INFO *infoPtr)
{
    int	i;

    TRACE("\n");
    for (i = 0; i < infoPtr->numParts; i++) {
	if (infoPtr->parts[i].text && !(infoPtr->parts[i].style & SBT_OWNERDRAW))
	    Free (infoPtr->parts[i].text);
    }
    if (infoPtr->part0.text && !(infoPtr->part0.style & SBT_OWNERDRAW))
	Free (infoPtr->part0.text);
    Free (infoPtr->parts);

    /* delete default font */
    if (infoPtr->hDefaultFont)
	DeleteObject (infoPtr->hDefaultFont);

    /* delete tool tip control */
    if (infoPtr->hwndToolTip)
	DestroyWindow (infoPtr->hwndToolTip);

    CloseThemeData (GetWindowTheme (infoPtr->Self));

    SetWindowLongPtrW(infoPtr->Self, 0, 0);
    Free (infoPtr);
    return 0;
}


static LRESULT
STATUSBAR_WMCreate (HWND hwnd, LPCREATESTRUCTA lpCreate)
{
    STATUS_INFO *infoPtr;
    NONCLIENTMETRICSW nclm;
    DWORD dwStyle;
    RECT rect;
    int	i, width, len, textHeight = 0;
    HDC	hdc;

    TRACE("\n");
    infoPtr = (STATUS_INFO*)Alloc (sizeof(STATUS_INFO));
    if (!infoPtr) goto create_fail;
    SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);

    infoPtr->Self = hwnd;
    infoPtr->Notify = lpCreate->hwndParent;
    infoPtr->numParts = 1;
    infoPtr->parts = 0;
    infoPtr->simple = FALSE;
    infoPtr->clrBk = CLR_DEFAULT;
    infoPtr->hFont = 0;
    infoPtr->horizontalBorder = HORZ_BORDER;
    infoPtr->verticalBorder = VERT_BORDER;
    infoPtr->horizontalGap = HORZ_GAP;

    i = SendMessageW(infoPtr->Notify, WM_NOTIFYFORMAT, (WPARAM)hwnd, NF_QUERY);
    infoPtr->NtfUnicode = (i == NFR_UNICODE);

    GetClientRect (hwnd, &rect);
    InvalidateRect (hwnd, &rect, 0);
    UpdateWindow(hwnd);

    ZeroMemory (&nclm, sizeof(nclm));
    nclm.cbSize = sizeof(nclm);
    SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, nclm.cbSize, &nclm, 0);
    infoPtr->hDefaultFont = CreateFontIndirectW (&nclm.lfStatusFont);

    /* initialize simple case */
    infoPtr->part0.bound = rect;
    infoPtr->part0.text = 0;
    infoPtr->part0.x = 0;
    infoPtr->part0.style = 0;
    infoPtr->part0.hIcon = 0;

    /* initialize first part */
    infoPtr->parts = Alloc (sizeof(STATUSWINDOWPART));
    if (!infoPtr->parts) goto create_fail;
    infoPtr->parts[0].bound = rect;