xprint.c

远程桌面连接工具

}

/*
 * XpFreePage is the routine called by dix:FreeResource to free the page
 * resource built with the same ID as a page window.  It checks to see
 * if we're in the middle of a page, and if so calls the driver's EndPage
 * function with 'cancel' set TRUE.  It frees the memory associated with
 * the page resource.
 */
static int
XpFreePage(data, id)
    pointer data;
    XID id;
{
    XpPagePtr page = (XpPagePtr)data;
    int result = Success;
    WindowPtr pWin = (WindowPtr )LookupIDByType(id, RT_WINDOW);

    /* Check to see if the window's being deleted in the middle of a page */
    if(page->context != (XpContextPtr)NULL && 
       page->context->state & PAGE_STARTED)
    {
	XpScreenPtr pPrintScreen = XpScreens[page->context->screenNum];
	if(page->context->funcs.EndPage != (int (*)())NULL)
	    result = page->context->funcs.EndPage(page->context, pWin, TRUE);
        SendXpNotify(page->context, XPEndPageNotify, (int)TRUE);
	page->context->pageWin = 0; /* None, NULL??? XXX */
    }

    xfree(page);
    return result;
}

/*
 * ContextPrivate machinery.
 * Context privates are intended for use by the drivers, allowing the
 * drivers to maintain context-specific data.  The driver should free
 * the associated data at DestroyContext time.
 */

static void
InitContextPrivates(context)
    XpContextPtr context;
{
    register char *ptr;
    DevUnion *ppriv;
    register unsigned *sizes;
    register unsigned size;
    register int i;

    if (totalContextSize == sizeof(XpContextRec))
        ppriv = (DevUnion *)NULL;
    else 
        ppriv = (DevUnion *)(context + 1);

    context->devPrivates = ppriv;
    sizes = contextPrivateSizes;
    ptr = (char *)(ppriv + contextPrivateLen);
    for (i = contextPrivateLen; --i >= 0; ppriv++, sizes++)
    {
        if ( (size = *sizes) )
        {
            ppriv->ptr = (pointer)ptr;
            ptr += size;
        }
        else
            ppriv->ptr = (pointer)NULL;
    }
}

static void
ResetContextPrivates()
{
    contextPrivateCount = 0;
    contextPrivateLen = 0;
    xfree(contextPrivateSizes);
    contextPrivateSizes = (unsigned *)NULL;
    totalContextSize = sizeof(XpContextRec);

}

int
XpAllocateContextPrivateIndex()
{
    return contextPrivateCount++;
}

Bool
XpAllocateContextPrivate(index, amount)
    int index;
    unsigned amount;
{
    unsigned oldamount;

    if (index >= contextPrivateLen)
    {
        unsigned *nsizes;
        nsizes = (unsigned *)xrealloc(contextPrivateSizes,
                                      (index + 1) * sizeof(unsigned));
        if (!nsizes)
            return FALSE;
        while (contextPrivateLen <= index)
        {
            nsizes[contextPrivateLen++] = 0;
            totalContextSize += sizeof(DevUnion);
        }
        contextPrivateSizes = nsizes;
    }
    oldamount = contextPrivateSizes[index];
    if (amount > oldamount)
    {
        contextPrivateSizes[index] = amount;
        totalContextSize += (amount - oldamount);
    }
    return TRUE;
}

static XpClientPtr
AcquireClient(pContext, client)
    XpContextPtr pContext;
    ClientPtr client;
{
    XpClientPtr pXpClient;

    if((pXpClient = FindClient(pContext, client)) != (XpClientPtr)NULL)
	return pXpClient;

    if((pXpClient = CreateXpClient(client)) == (XpClientPtr)NULL)
	    return (XpClientPtr)NULL;

    pXpClient->context = pContext;
    pXpClient->pNext = pContext->clientHead;
    pContext->clientHead = pXpClient;

    return pXpClient;
}

static XpClientPtr
FindClient(pContext, client)
    XpContextPtr pContext;
    ClientPtr client;
{
    XpClientPtr pXpClient;

    for(pXpClient = pContext->clientHead; pXpClient != (XpClientPtr)NULL;
	pXpClient = pXpClient->pNext)
    {
	if(pXpClient->client == client)  return pXpClient;
    }
    return (XpClientPtr)NULL;
}


/******************************************************************************
 *
 * Start/End Functions: StartJob, EndJob, StartDoc, EndDoc, StartPage, EndPage
 *
 ******************************************************************************/

static int
ProcXpStartJob(client)
    ClientPtr client;
{
    REQUEST(xPrintStartJobReq);
    XpContextPtr pContext;
    int result = Success;
    XpScreenPtr pPrintScreen;

    REQUEST_SIZE_MATCH(xPrintStartJobReq);

    /* Check to see that a context has been established by this client. */
    if((pContext = (XpContextPtr)client->devPrivates[XpClientPrivateIndex].ptr)
       == (XpContextPtr)NULL)
        return XpErrorBase+XPBadContext;

    if(pContext->state != 0)
	return XpErrorBase+XPBadSequence;

    if(stuff->saveData != XPSpool && stuff->saveData != XPGetData)
    {
	client->errorValue = stuff->saveData;
	return BadValue;
    }

    pPrintScreen = XpScreens[pContext->screenNum];
    if(pContext->funcs.StartJob != (int (*)())NULL)
        result = pContext->funcs.StartJob(pContext, 
			 (stuff->saveData == XPGetData)? TRUE:FALSE);
    else
        return BadImplementation;

    pContext->state = JOB_STARTED;
    if(stuff->saveData == XPGetData)
	pContext->state |= JOB_GET_DATA;

    SendXpNotify(pContext, XPStartJobNotify, FALSE);

    if (client->noClientException != Success)
        return client->noClientException;
    else
        return result;
}

static int
ProcXpEndJob(client)
    ClientPtr client;
{
    REQUEST(xPrintEndJobReq);
    XpScreenPtr pPrintScreen;
    WindowPtr pWin;
    int result = Success;
    XpContextPtr pContext;

    REQUEST_SIZE_MATCH(xPrintEndJobReq);

    if((pContext = (XpContextPtr)client->devPrivates[XpClientPrivateIndex].ptr)
       == (XpContextPtr)NULL)
        return XpErrorBase+XPBadSequence;

    pPrintScreen = XpScreens[pContext->screenNum];

    if(!(pContext->state & JOB_STARTED))
	return XpErrorBase+XPBadSequence;
    
    /* Check for missing EndDoc */
    if((pContext->state & DOC_RAW_STARTED) || 
       (pContext->state & DOC_COOKED_STARTED))
    {
	if(pContext->state & PAGE_STARTED)
	{
	    WindowPtr pWin = (WindowPtr )LookupIDByType(
					   pContext->pageWin, RT_WINDOW);
	    XpPagePtr pPage = (XpPagePtr)LookupIDByType(
				       pContext->pageWin, RTpage);

	    if(stuff->cancel != TRUE)
	        return XpErrorBase+XPBadSequence;

            if(pContext->funcs.EndPage != (int (*)())NULL)
                result = pContext->funcs.EndPage(pContext, pWin, TRUE);
            else
	        return BadImplementation;

	    SendXpNotify(pContext, XPEndPageNotify, TRUE);

	    pContext->state &= ~PAGE_STARTED;

	    if(pPage)
	        pPage->context = (XpContextPtr)NULL;

	    if(result != Success) return result;
	}

        if(pContext->funcs.EndDoc != (int (*)())NULL)
            result = pContext->funcs.EndDoc(pContext, stuff->cancel);
        else
	    return BadImplementation;

        SendXpNotify(pContext, XPEndDocNotify, stuff->cancel);
    }

    if(pContext->funcs.EndJob != (int (*)())NULL)
        result = pContext->funcs.EndJob(pContext, stuff->cancel);
    else
	return BadImplementation;

    pContext->state = 0;

    SendXpNotify(pContext, XPEndJobNotify, stuff->cancel);

    if (client->noClientException != Success)
        return client->noClientException;
    else
        return result;
}

static Bool
DoStartDoc(client, c)
    ClientPtr client;
    XpStDocPtr c;
{
    XpScreenPtr pPrintScreen;
    int result = Success;
    XpContextPtr pContext = c->pContext;

    if(c->pContext->state & JOB_GET_DATA && 
       !(c->pContext->state & GET_DOC_DATA_STARTED))
    {
	if(!c->slept)
	{
	    c->slept = TRUE;
	    ClientSleep(client, (ClientSleepProcPtr)DoStartDoc, (pointer) c);
	    c->pContext->clientSlept = client;
	}
	return TRUE;
    }
    
    pPrintScreen = XpScreens[pContext->screenNum];

    if(pContext->funcs.StartDoc != (int (*)())NULL)
        result = pContext->funcs.StartDoc(pContext, c->type);
    else
    {
	    SendErrorToClient(client, XpReqCode, X_PrintStartPage, 0, 
			      BadImplementation);
	    return TRUE;
    }

    if(c->type == XPDocNormal)
        pContext->state |= DOC_COOKED_STARTED;
    else
	pContext->state |= DOC_RAW_STARTED;

    SendXpNotify(pContext, XPStartDocNotify, (int)FALSE);

    xfree(c);
    return TRUE;
}

static int
ProcXpStartDoc(client)
    ClientPtr client;
{
    REQUEST(xPrintStartDocReq);
    XpScreenPtr pPrintScreen;
    int result = Success;
    XpContextPtr pContext;
    XpStDocPtr c;

    REQUEST_SIZE_MATCH(xPrintStartDocReq);

    if((pContext = (XpContextPtr)client->devPrivates[XpClientPrivateIndex].ptr)
       == (XpContextPtr)NULL)
        return XpErrorBase+XPBadSequence;

    if(!(pContext->state & JOB_STARTED) || 
       pContext->state & DOC_RAW_STARTED ||
       pContext->state & DOC_COOKED_STARTED)
	return XpErrorBase+XPBadSequence;

    if(stuff->type != XPDocNormal && stuff->type != XPDocRaw)
    {
	client->errorValue = stuff->type;
	return BadValue;
    }

    c = (XpStDocPtr)xalloc(sizeof(XpStDocRec));
    c->pContext = pContext;
    c->type = stuff->type;
    c->slept = FALSE;
    (void)DoStartDoc(client, c);

    if (client->noClientException != Success)
        return client->noClientException;
    else
        return result;
}

static int
ProcXpEndDoc(client)
    ClientPtr client;
{
    REQUEST(xPrintEndDocReq);
    XpScreenPtr pPrintScreen;
    XpContextPtr pContext;
    int result = Success;

    REQUEST_SIZE_MATCH(xPrintEndDocReq);

    if((pContext = (XpContextPtr)client->devPrivates[XpClientPrivateIndex].ptr)
       == (XpContextPtr)NULL)
        return XpErrorBase+XPBadSequence;

    pPrintScreen = XpScreens[pContext->screenNum];

    if(!(pContext->state & DOC_RAW_STARTED) &&
       !(pContext->state & DOC_COOKED_STARTED))
	return XpErrorBase+XPBadSequence;
    
    if(pContext->state & PAGE_STARTED)
    {
	if(stuff->cancel == TRUE)
	{
	    WindowPtr pWin = (WindowPtr )LookupIDByType(
					   pContext->pageWin, RT_WINDOW);
	    XpPagePtr pPage = (XpPagePtr)LookupIDByType(
				       pContext->pageWin, RTpage);

            if(pContext->funcs.EndPage != (int (*)())NULL)
                result = pContext->funcs.EndPage(pContext, pWin, TRUE);
            else
	        return BadImplementation;

	    SendXpNotify(pContext, XPEndPageNotify, TRUE);

	    if(pPage)
	        pPage->context = (XpContextPtr)NULL;
	}
	else
	    return XpErrorBase+XPBadSequence;
	if(result != Success)
	    return result;
    }

    if(pContext->funcs.EndDoc != (int (*)())NULL)
        result = pContext->funcs.EndDoc(pContext, stuff->cancel);
    else
	return BadImplementation;

    pContext->state &= ~DOC_RAW_STARTED;
    pContext->state &= ~DOC_COOKED_STARTED;

    SendXpNotify(pContext, XPEndDocNotify, stuff->cancel);

    if (client->noClientException != Success)
        return client->noClientException;
    else
        return result;
}

static Bool
DoStartPage(client, c)
    ClientPtr client;
    XpStPagePtr c;
{
    XpScreenPtr pPrintScreen;
    WindowPtr pWin = c->pWin;
    int result = Success;
    XpContextPtr pContext = c->pContext;
    XpPagePtr pPage;

    if(c->pContext->state & JOB_GET_DATA && 
       !(c->pContext->state & GET_DOC_DATA_STARTED))
    {
	if(!c->slept)
	{
	    c->slept = TRUE;
	    ClientSleep(client, (ClientSleepProcPtr)DoStartPage, (pointer) c);
	    c->pContext->clientSlept = client;
	}
	return TRUE;
    }

    if(!(pContext->state & DOC_COOKED_STARTED))
    {
	/* Implied StartDoc if it was omitted */
        if(pContext->funcs.StartDoc != (int (*)())NULL)
            result = pContext->funcs.StartDoc(pContext, XPDocNormal);
        else
	{
	    SendErrorToClient(client, XpReqCode, X_PrintStartPage, 0, 
			      BadImplementation);
	    return TRUE;
	}

	if(result != Success) 
	{
	    SendErrorToClient(client, XpReqCode, X_PrintStartPage, 0, result);
	    return TRUE;
	}