pjs/widget/gtk2/nsCUPSShim.h

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla PostScript driver printer list component.
*
* The Initial Developer of the Original Code is
* Kenneth Herron <kherron+mozilla@fmailbox.com>
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsCUPSShim_h___
#define nsCUPSShim_h___
#include "prtypes.h"
/* Various CUPS data types. We don't #include cups headers to avoid
* requiring CUPS to be installed on the build host (and to avoid having
* to test for CUPS in configure).
*/
typedef struct /**** Printer Options ****/
{
char *name; /* Name of option */
char *value; /* Value of option */
} cups_option_t;
typedef struct /**** Destination ****/
{
char *name, /* Printer or class name */
*instance; /* Local instance name or NULL */
int is_default; /* Is this printer the default? */
int num_options; /* Number of options */
cups_option_t *options; /* Options */
} cups_dest_t;
typedef cups_dest_t* (PR_CALLBACK *CupsGetDestType)(const char *printer,
const char *instance,
int num_dests,
cups_dest_t *dests);
typedef int (PR_CALLBACK *CupsGetDestsType)(cups_dest_t **dests);
typedef int (PR_CALLBACK *CupsFreeDestsType)(int num_dests,
cups_dest_t *dests);
typedef int (PR_CALLBACK *CupsPrintFileType)(const char *printer,
const char *filename,
const char *title,
int num_options,
cups_option_t *options);
typedef int (PR_CALLBACK *CupsTempFdType)(char *filename,
int length);
typedef int (PR_CALLBACK *CupsAddOptionType)(const char *name,
const char *value,
int num_options,
cups_option_t **options);
struct PRLibrary;
/* Note: this class relies on static initialization. */
class nsCUPSShim {
public:
/**
* Initialize this object. Attempt to load the CUPS shared
* library and find function pointers for the supported
* functions (see below).
* @return false if the shared library could not be loaded, or if
* any of the functions could not be found.
* true for successful initialization.
*/
bool Init();
/**
* @return true if the object was initialized successfully.
* false otherwise.
*/
bool IsInitialized() { return nsnull != mCupsLib; }
/* Function pointers for supported functions. These are only
* valid after successful initialization.
*/
CupsAddOptionType mCupsAddOption;
CupsFreeDestsType mCupsFreeDests;
CupsGetDestType mCupsGetDest;
CupsGetDestsType mCupsGetDests;
CupsPrintFileType mCupsPrintFile;
CupsTempFdType mCupsTempFd;
private:
PRLibrary *mCupsLib;
};
#endif /* nsCUPSShim_h___ */