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406 lines
13 KiB
C++
406 lines
13 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <qdebug.h>
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#include "qcups_p.h"
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#ifndef QT_NO_CUPS
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#ifndef QT_LINUXBASE // LSB merges everything into cups.h
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# include <cups/language.h>
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#endif
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#include <qtextcodec.h>
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QT_BEGIN_NAMESPACE
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typedef int (*CupsGetDests)(cups_dest_t **dests);
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typedef void (*CupsFreeDests)(int num_dests, cups_dest_t *dests);
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typedef const char* (*CupsGetPPD)(const char *printer);
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typedef int (*CupsMarkOptions)(ppd_file_t *ppd, int num_options, cups_option_t *options);
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typedef ppd_file_t* (*PPDOpenFile)(const char *filename);
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typedef void (*PPDMarkDefaults)(ppd_file_t *ppd);
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typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
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typedef void (*PPDClose)(ppd_file_t *ppd);
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typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
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typedef void (*CupsFreeOptions)(int num_options, cups_option_t *options);
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typedef void (*CupsSetDests)(int num_dests, cups_dest_t *dests);
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typedef cups_lang_t* (*CupsLangGet)(const char *language);
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typedef const char* (*CupsLangEncoding)(cups_lang_t *language);
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typedef int (*CupsAddOption)(const char *name, const char *value, int num_options, cups_option_t **options);
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typedef int (*CupsTempFd)(char *name, int len);
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typedef int (*CupsPrintFile)(const char * name, const char * filename, const char * title, int num_options, cups_option_t * options);
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static bool cupsLoaded = false;
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static int qt_cups_num_printers = 0;
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static CupsGetDests _cupsGetDests = 0;
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static CupsFreeDests _cupsFreeDests = 0;
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static CupsGetPPD _cupsGetPPD = 0;
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static PPDOpenFile _ppdOpenFile = 0;
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static PPDMarkDefaults _ppdMarkDefaults = 0;
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static PPDClose _ppdClose = 0;
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static CupsMarkOptions _cupsMarkOptions = 0;
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static PPDMarkOption _ppdMarkOption = 0;
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static CupsFreeOptions _cupsFreeOptions = 0;
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static CupsSetDests _cupsSetDests = 0;
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static CupsLangGet _cupsLangGet = 0;
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static CupsLangEncoding _cupsLangEncoding = 0;
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static CupsAddOption _cupsAddOption = 0;
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static CupsTempFd _cupsTempFd = 0;
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static CupsPrintFile _cupsPrintFile = 0;
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static void resolveCups()
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{
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QLibrary cupsLib(QLatin1String("cups"), 2);
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if(cupsLib.load()) {
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_cupsGetDests = (CupsGetDests) cupsLib.resolve("cupsGetDests");
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_cupsFreeDests = (CupsFreeDests) cupsLib.resolve("cupsFreeDests");
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_cupsGetPPD = (CupsGetPPD) cupsLib.resolve("cupsGetPPD");
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_cupsLangGet = (CupsLangGet) cupsLib.resolve("cupsLangGet");
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_cupsLangEncoding = (CupsLangEncoding) cupsLib.resolve("cupsLangEncoding");
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_ppdOpenFile = (PPDOpenFile) cupsLib.resolve("ppdOpenFile");
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_ppdMarkDefaults = (PPDMarkDefaults) cupsLib.resolve("ppdMarkDefaults");
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_ppdClose = (PPDClose) cupsLib.resolve("ppdClose");
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_cupsMarkOptions = (CupsMarkOptions) cupsLib.resolve("cupsMarkOptions");
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_ppdMarkOption = (PPDMarkOption) cupsLib.resolve("ppdMarkOption");
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_cupsFreeOptions = (CupsFreeOptions) cupsLib.resolve("cupsFreeOptions");
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_cupsSetDests = (CupsSetDests) cupsLib.resolve("cupsSetDests");
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_cupsAddOption = (CupsAddOption) cupsLib.resolve("cupsAddOption");
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_cupsTempFd = (CupsTempFd) cupsLib.resolve("cupsTempFd");
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_cupsPrintFile = (CupsPrintFile) cupsLib.resolve("cupsPrintFile");
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if (_cupsGetDests && _cupsFreeDests) {
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cups_dest_t *printers;
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int num_printers = _cupsGetDests(&printers);
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if (num_printers)
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_cupsFreeDests(num_printers, printers);
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qt_cups_num_printers = num_printers;
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}
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}
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cupsLoaded = true;
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}
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// ================ CUPS Support class ========================
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QCUPSSupport::QCUPSSupport()
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:
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prnCount(0),
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printers(0),
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page_sizes(0),
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currPrinterIndex(0),
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currPPD(0)
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{
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if (!cupsLoaded)
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resolveCups();
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// getting all available printers
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if (!isAvailable())
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return;
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// Update the available printer count
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qt_cups_num_printers = prnCount = _cupsGetDests(&printers);
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for (int i = 0; i < prnCount; ++i) {
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if (printers[i].is_default) {
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currPrinterIndex = i;
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setCurrentPrinter(i);
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break;
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}
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}
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#ifndef QT_NO_TEXTCODEC
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cups_lang_t *cupsLang = _cupsLangGet(0);
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codec = QTextCodec::codecForName(_cupsLangEncoding(cupsLang));
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if (!codec)
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codec = QTextCodec::codecForLocale();
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#endif
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}
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QCUPSSupport::~QCUPSSupport()
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{
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if (currPPD)
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_ppdClose(currPPD);
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if (prnCount)
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_cupsFreeDests(prnCount, printers);
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}
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int QCUPSSupport::availablePrintersCount() const
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{
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return prnCount;
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}
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const cups_dest_t* QCUPSSupport::availablePrinters() const
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{
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return printers;
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}
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const ppd_file_t* QCUPSSupport::currentPPD() const
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{
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return currPPD;
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}
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const ppd_file_t* QCUPSSupport::setCurrentPrinter(int index)
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{
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Q_ASSERT(index >= 0 && index <= prnCount);
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if (index == prnCount)
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return 0;
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currPrinterIndex = index;
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if (currPPD)
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_ppdClose(currPPD);
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currPPD = 0;
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page_sizes = 0;
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const char *ppdFile = _cupsGetPPD(printers[index].name);
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if (!ppdFile)
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return 0;
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currPPD = _ppdOpenFile(ppdFile);
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unlink(ppdFile);
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// marking default options
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_ppdMarkDefaults(currPPD);
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// marking options explicitly set
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_cupsMarkOptions(currPPD, printers[currPrinterIndex].num_options, printers[currPrinterIndex].options);
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// getting pointer to page sizes
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page_sizes = ppdOption("PageSize");
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return currPPD;
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}
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int QCUPSSupport::currentPrinterIndex() const
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{
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return currPrinterIndex;
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}
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bool QCUPSSupport::isAvailable()
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{
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if(!cupsLoaded)
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resolveCups();
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return _cupsGetDests &&
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_cupsFreeDests &&
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_cupsGetPPD &&
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_ppdOpenFile &&
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_ppdMarkDefaults &&
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_ppdClose &&
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_cupsMarkOptions &&
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_ppdMarkOption &&
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_cupsFreeOptions &&
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_cupsSetDests &&
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_cupsLangGet &&
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_cupsLangEncoding &&
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_cupsAddOption &&
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(qt_cups_num_printers > 0);
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}
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const ppd_option_t* QCUPSSupport::ppdOption(const char *key) const
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{
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if (currPPD) {
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for (int gr = 0; gr < currPPD->num_groups; ++gr) {
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for (int opt = 0; opt < currPPD->groups[gr].num_options; ++opt) {
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if (qstrcmp(currPPD->groups[gr].options[opt].keyword, key) == 0)
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return &currPPD->groups[gr].options[opt];
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}
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}
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}
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return 0;
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}
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const cups_option_t* QCUPSSupport::printerOption(const QString &key) const
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{
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for (int i = 0; i < printers[currPrinterIndex].num_options; ++i) {
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if (QLatin1String(printers[currPrinterIndex].options[i].name) == key)
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return &printers[currPrinterIndex].options[i];
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}
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return 0;
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}
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const ppd_option_t* QCUPSSupport::pageSizes() const
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{
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return page_sizes;
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}
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int QCUPSSupport::markOption(const char* name, const char* value)
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{
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return _ppdMarkOption(currPPD, name, value);
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}
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void QCUPSSupport::saveOptions(QList<const ppd_option_t*> options, QList<const char*> markedOptions)
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{
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int oldOptionCount = printers[currPrinterIndex].num_options;
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cups_option_t* oldOptions = printers[currPrinterIndex].options;
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int newOptionCount = 0;
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cups_option_t* newOptions = 0;
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// copying old options that are not on the new list
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for (int i = 0; i < oldOptionCount; ++i) {
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bool contains = false;
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for (int j = 0; j < options.count(); ++j) {
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if (qstrcmp(options.at(j)->keyword, oldOptions[i].name) == 0) {
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contains = true;
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break;
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}
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}
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if (!contains) {
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newOptionCount = _cupsAddOption(oldOptions[i].name, oldOptions[i].value, newOptionCount, &newOptions);
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}
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}
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// we can release old option list
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_cupsFreeOptions(oldOptionCount, oldOptions);
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// adding marked options
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for (int i = 0; i < markedOptions.count(); ++i) {
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const char* name = markedOptions.at(i);
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++i;
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newOptionCount = _cupsAddOption(name, markedOptions.at(i), newOptionCount, &newOptions);
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}
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// placing the new option list
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printers[currPrinterIndex].num_options = newOptionCount;
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printers[currPrinterIndex].options = newOptions;
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// saving new default values
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_cupsSetDests(prnCount, printers);
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}
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QRect QCUPSSupport::paperRect(const char *choice) const
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{
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if (!currPPD)
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return QRect();
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for (int i = 0; i < currPPD->num_sizes; ++i) {
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if (qstrcmp(currPPD->sizes[i].name, choice) == 0)
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return QRect(0, 0, qRound(currPPD->sizes[i].width), qRound(currPPD->sizes[i].length));
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}
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return QRect();
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}
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QRect QCUPSSupport::pageRect(const char *choice) const
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{
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if (!currPPD)
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return QRect();
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for (int i = 0; i < currPPD->num_sizes; ++i) {
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if (qstrcmp(currPPD->sizes[i].name, choice) == 0)
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return QRect(qRound(currPPD->sizes[i].left),
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qRound(currPPD->sizes[i].length - currPPD->sizes[i].top),
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qRound(currPPD->sizes[i].right - currPPD->sizes[i].left),
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qRound(currPPD->sizes[i].top - currPPD->sizes[i].bottom));
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}
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return QRect();
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}
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QStringList QCUPSSupport::options() const
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{
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QStringList list;
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collectMarkedOptions(list);
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return list;
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}
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bool QCUPSSupport::printerHasPPD(const char *printerName)
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{
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if (!isAvailable())
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return false;
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const char *ppdFile = _cupsGetPPD(printerName);
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if (ppdFile)
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unlink(ppdFile);
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return (ppdFile != 0);
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}
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QString QCUPSSupport::unicodeString(const char *s)
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{
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#ifndef QT_NO_TEXTCODEC
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return codec->toUnicode(s);
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#else
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return QLatin1String(s);
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#endif
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}
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void QCUPSSupport::collectMarkedOptions(QStringList& list, const ppd_group_t* group) const
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{
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if (group == 0) {
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if (!currPPD)
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return;
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for (int i = 0; i < currPPD->num_groups; ++i) {
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collectMarkedOptions(list, &currPPD->groups[i]);
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collectMarkedOptionsHelper(list, &currPPD->groups[i]);
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}
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} else {
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for (int i = 0; i < group->num_subgroups; ++i)
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collectMarkedOptionsHelper(list, &group->subgroups[i]);
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}
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}
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void QCUPSSupport::collectMarkedOptionsHelper(QStringList& list, const ppd_group_t* group) const
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{
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for (int i = 0; i < group->num_options; ++i) {
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for (int j = 0; j < group->options[i].num_choices; ++j) {
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if (group->options[i].choices[j].marked == 1 && qstrcmp(group->options[i].choices[j].choice, group->options[i].defchoice) != 0)
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list << QString::fromLocal8Bit(group->options[i].keyword) << QString::fromLocal8Bit(group->options[i].choices[j].choice);
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}
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}
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}
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QPair<int, QString> QCUPSSupport::tempFd()
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{
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char filename[512];
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int fd = _cupsTempFd(filename, 512);
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return QPair<int, QString>(fd, QString::fromLocal8Bit(filename));
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}
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// Prints the given file and returns a job id.
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int QCUPSSupport::printFile(const char * printerName, const char * filename, const char * title,
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int num_options, cups_option_t * options)
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{
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return _cupsPrintFile(printerName, filename, title, num_options, options);
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}
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QT_END_NAMESPACE
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#endif // QT_NO_CUPS
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