uidevcaps.cpp

虚拟打印机

/*
 *
 * UIDevCaps.cpp
 *
   Copyright (C) 2006 Michael H. Overlin

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   
   Contact at [e-mail]

 */

#include "UIDevCaps.h"
#include "UIDevMode.h"
#include "..\lib\printResizerCommon.h"
#include "..\lib\extDevMode.h"
#include "..\lib\fallback.h"
#include "..\lib\spoolutils.h"
#include "..\lib\utils.h"
#include <windows.h>
#include <malloc.h>
#include <strsafe.h>
#include <winspool.h>


// NEED TO TAKE INTO ACCOUNT DIFFERENCE BETWEEN
// OUR CAPS, TARGET CAPS
DWORD DrvDeviceCapabilities(
    HANDLE  hPrinter,
    PWSTR  pDeviceName,
    WORD  iDevCap,
    VOID  *pvOutput,
    PDEVMODE  pDevMode
	) {
	DWORD dwRetValue = GDI_ERROR;
	LPCTSTR lptstrTargetPrinterName = NULL;

	static BOOL bBreak = STATICBOOLBREAK;
	ASSERT(!bBreak);

	PEXTDEVMODE pextdm = ::EXTDM_New();
	if (pextdm != NULL) {
		// DEBUG / FIX: NOT SURE pDeviceName IS ALWAYS VALID ...
		ASSERT(pDeviceName != NULL);
		::EXTDM_SetAppDevMode(pextdm, pDevMode, pDeviceName);
		PCDEVMODE pdmTarget = ::EXTDM_GetTargetPrinterDevMode(pextdm);
		// DEBUG / FIX:  WE SHOULD CHECK FOR CASE THAT TARGET IS OURSELF, WITH A TARGET OF OURSELF AGAIN
		// IN THAT CASE WE HAVE TO RETURN DEVICE CAPABILITY OURSELF
		if (pdmTarget != NULL) {
			::PPRINTER_INFO_2 pinfo = ::GetPrinterInfo2(::EXTDM_GetTargetPrinterName(pextdm));
			if (pinfo != NULL) {
				// 6/23
				//dwRetValue = ::DeviceCapabilities(pinfo->pPrinterName, pinfo->pPortName, 
				//	iDevCap, (LPTSTR) pvOutput, pdmTarget);
				BOOL bError = FALSE;
				BOOL bFallBack = FALSE;
				if ( ::EXTDM_IsAnExtDevMode(pdmTarget) ) {
					PCEXTDEVMODE pextdmTarget = (PCEXTDEVMODE) pdmTarget;
					BOOL bCircular;
					if ( ::EXTDM_IsCircular(bCircular, pextdmTarget) ) {
						bFallBack = bCircular;
					} else {
						// WE COULDN'T CHECK IF THE TARGET IS OURS WITH A CIRCULAR REF
						bError = TRUE;
					}
				}
				if (!bError) {
					if (!bFallBack) {
						dwRetValue = ::DeviceCapabilities(pinfo->pPrinterName, pinfo->pPortName, 
							iDevCap, (LPTSTR) pvOutput, pdmTarget);
					} else {
						dwRetValue = ::Fallback_GetDeviceCapabilities(hPrinter, iDevCap, pvOutput);
					}
				}

				free(pinfo);
			}

			::EXTDM_ReleaseTargetPrinterDevMode(pextdm, pdmTarget);
		}
		::EXTDM_Delete(pextdm);
	}

	return dwRetValue;
}


//		dwRetValue = Fallback_GetDeviceCapabilities(
//			hPrinter, iDevCap, pvOutput);
//	}