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Diffstat (limited to 'src/printsupport/kernel/qcups.cpp')
| -rw-r--r-- | src/printsupport/kernel/qcups.cpp | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/src/printsupport/kernel/qcups.cpp b/src/printsupport/kernel/qcups.cpp new file mode 100644 index 0000000000..76050d9d71 --- /dev/null +++ b/src/printsupport/kernel/qcups.cpp @@ -0,0 +1,446 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <qdebug.h> +#include "qcups_p.h" +#include "qprinterinfo_unix_p.h" + +#ifndef QT_NO_CUPS + +#ifndef QT_LINUXBASE // LSB merges everything into cups.h +# include <cups/language.h> +#endif +#include <qtextcodec.h> + +QT_BEGIN_NAMESPACE + +typedef int (*CupsGetDests)(cups_dest_t **dests); +typedef void (*CupsFreeDests)(int num_dests, cups_dest_t *dests); +typedef const char* (*CupsGetPPD)(const char *printer); +typedef int (*CupsMarkOptions)(ppd_file_t *ppd, int num_options, cups_option_t *options); +typedef ppd_file_t* (*PPDOpenFile)(const char *filename); +typedef void (*PPDMarkDefaults)(ppd_file_t *ppd); +typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option); +typedef void (*PPDClose)(ppd_file_t *ppd); +typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option); +typedef void (*CupsFreeOptions)(int num_options, cups_option_t *options); +typedef void (*CupsSetDests)(int num_dests, cups_dest_t *dests); +typedef cups_lang_t* (*CupsLangGet)(const char *language); +typedef const char* (*CupsLangEncoding)(cups_lang_t *language); +typedef int (*CupsAddOption)(const char *name, const char *value, int num_options, cups_option_t **options); +typedef int (*CupsTempFd)(char *name, int len); +typedef int (*CupsPrintFile)(const char * name, const char * filename, const char * title, int num_options, cups_option_t * options); + +static bool cupsLoaded = false; +static int qt_cups_num_printers = 0; +static CupsGetDests _cupsGetDests = 0; +static CupsFreeDests _cupsFreeDests = 0; +static CupsGetPPD _cupsGetPPD = 0; +static PPDOpenFile _ppdOpenFile = 0; +static PPDMarkDefaults _ppdMarkDefaults = 0; +static PPDClose _ppdClose = 0; +static CupsMarkOptions _cupsMarkOptions = 0; +static PPDMarkOption _ppdMarkOption = 0; +static CupsFreeOptions _cupsFreeOptions = 0; +static CupsSetDests _cupsSetDests = 0; +static CupsLangGet _cupsLangGet = 0; +static CupsLangEncoding _cupsLangEncoding = 0; +static CupsAddOption _cupsAddOption = 0; +static CupsTempFd _cupsTempFd = 0; +static CupsPrintFile _cupsPrintFile = 0; + +static void resolveCups() +{ + QLibrary cupsLib(QLatin1String("cups"), 2); + if(cupsLib.load()) { + _cupsGetDests = (CupsGetDests) cupsLib.resolve("cupsGetDests"); + _cupsFreeDests = (CupsFreeDests) cupsLib.resolve("cupsFreeDests"); + _cupsGetPPD = (CupsGetPPD) cupsLib.resolve("cupsGetPPD"); + _cupsLangGet = (CupsLangGet) cupsLib.resolve("cupsLangGet"); + _cupsLangEncoding = (CupsLangEncoding) cupsLib.resolve("cupsLangEncoding"); + _ppdOpenFile = (PPDOpenFile) cupsLib.resolve("ppdOpenFile"); + _ppdMarkDefaults = (PPDMarkDefaults) cupsLib.resolve("ppdMarkDefaults"); + _ppdClose = (PPDClose) cupsLib.resolve("ppdClose"); + _cupsMarkOptions = (CupsMarkOptions) cupsLib.resolve("cupsMarkOptions"); + _ppdMarkOption = (PPDMarkOption) cupsLib.resolve("ppdMarkOption"); + _cupsFreeOptions = (CupsFreeOptions) cupsLib.resolve("cupsFreeOptions"); + _cupsSetDests = (CupsSetDests) cupsLib.resolve("cupsSetDests"); + _cupsAddOption = (CupsAddOption) cupsLib.resolve("cupsAddOption"); + _cupsTempFd = (CupsTempFd) cupsLib.resolve("cupsTempFd"); + _cupsPrintFile = (CupsPrintFile) cupsLib.resolve("cupsPrintFile"); + + if (_cupsGetDests && _cupsFreeDests) { + cups_dest_t *printers; + int num_printers = _cupsGetDests(&printers); + if (num_printers) + _cupsFreeDests(num_printers, printers); + qt_cups_num_printers = num_printers; + } + } + cupsLoaded = true; +} + +// ================ CUPS Support class ======================== + +QCUPSSupport::QCUPSSupport() + : + prnCount(0), + printers(0), + page_sizes(0), + currPrinterIndex(0), + currPPD(0) +{ + if (!cupsLoaded) + resolveCups(); + + // getting all available printers + if (!isAvailable()) + return; + + prnCount = _cupsGetDests(&printers); + + for (int i = 0; i < prnCount; ++i) { + if (printers[i].is_default) { + currPrinterIndex = i; + setCurrentPrinter(i); + break; + } + } + +#ifndef QT_NO_TEXTCODEC + cups_lang_t *cupsLang = _cupsLangGet(0); + codec = QTextCodec::codecForName(_cupsLangEncoding(cupsLang)); + if (!codec) + codec = QTextCodec::codecForLocale(); +#endif +} + +QCUPSSupport::~QCUPSSupport() +{ + if (currPPD) + _ppdClose(currPPD); + if (prnCount) + _cupsFreeDests(prnCount, printers); +} + +int QCUPSSupport::availablePrintersCount() const +{ + return prnCount; +} + +const cups_dest_t* QCUPSSupport::availablePrinters() const +{ + return printers; +} + +const ppd_file_t* QCUPSSupport::currentPPD() const +{ + return currPPD; +} + +const ppd_file_t* QCUPSSupport::setCurrentPrinter(int index) +{ + Q_ASSERT(index >= 0 && index <= prnCount); + if (index == prnCount) + return 0; + + currPrinterIndex = index; + + if (currPPD) + _ppdClose(currPPD); + currPPD = 0; + page_sizes = 0; + + const char *ppdFile = _cupsGetPPD(printers[index].name); + + if (!ppdFile) + return 0; + + currPPD = _ppdOpenFile(ppdFile); + unlink(ppdFile); + + // marking default options + _ppdMarkDefaults(currPPD); + + // marking options explicitly set + _cupsMarkOptions(currPPD, printers[currPrinterIndex].num_options, printers[currPrinterIndex].options); + + // getting pointer to page sizes + page_sizes = ppdOption("PageSize"); + + return currPPD; +} + +int QCUPSSupport::currentPrinterIndex() const +{ + return currPrinterIndex; +} + +bool QCUPSSupport::isAvailable() +{ + if(!cupsLoaded) + resolveCups(); + + return _cupsGetDests && + _cupsFreeDests && + _cupsGetPPD && + _ppdOpenFile && + _ppdMarkDefaults && + _ppdClose && + _cupsMarkOptions && + _ppdMarkOption && + _cupsFreeOptions && + _cupsSetDests && + _cupsLangGet && + _cupsLangEncoding && + _cupsAddOption && + (qt_cups_num_printers > 0); +} + +const ppd_option_t* QCUPSSupport::ppdOption(const char *key) const +{ + if (currPPD) { + for (int gr = 0; gr < currPPD->num_groups; ++gr) { + for (int opt = 0; opt < currPPD->groups[gr].num_options; ++opt) { + if (qstrcmp(currPPD->groups[gr].options[opt].keyword, key) == 0) + return &currPPD->groups[gr].options[opt]; + } + } + } + return 0; +} + +const cups_option_t* QCUPSSupport::printerOption(const QString &key) const +{ + for (int i = 0; i < printers[currPrinterIndex].num_options; ++i) { + if (QLatin1String(printers[currPrinterIndex].options[i].name) == key) + return &printers[currPrinterIndex].options[i]; + } + return 0; +} + +const ppd_option_t* QCUPSSupport::pageSizes() const +{ + return page_sizes; +} + +int QCUPSSupport::markOption(const char* name, const char* value) +{ + return _ppdMarkOption(currPPD, name, value); +} + +void QCUPSSupport::saveOptions(QList<const ppd_option_t*> options, QList<const char*> markedOptions) +{ + int oldOptionCount = printers[currPrinterIndex].num_options; + cups_option_t* oldOptions = printers[currPrinterIndex].options; + + int newOptionCount = 0; + cups_option_t* newOptions = 0; + + // copying old options that are not on the new list + for (int i = 0; i < oldOptionCount; ++i) { + bool contains = false; + for (int j = 0; j < options.count(); ++j) { + if (qstrcmp(options.at(j)->keyword, oldOptions[i].name) == 0) { + contains = true; + break; + } + } + + if (!contains) { + newOptionCount = _cupsAddOption(oldOptions[i].name, oldOptions[i].value, newOptionCount, &newOptions); + } + } + + // we can release old option list + _cupsFreeOptions(oldOptionCount, oldOptions); + + // adding marked options + for (int i = 0; i < markedOptions.count(); ++i) { + const char* name = markedOptions.at(i); + ++i; + newOptionCount = _cupsAddOption(name, markedOptions.at(i), newOptionCount, &newOptions); + } + + // placing the new option list + printers[currPrinterIndex].num_options = newOptionCount; + printers[currPrinterIndex].options = newOptions; + + // saving new default values + _cupsSetDests(prnCount, printers); +} + +QRect QCUPSSupport::paperRect(const char *choice) const +{ + if (!currPPD) + return QRect(); + for (int i = 0; i < currPPD->num_sizes; ++i) { + if (qstrcmp(currPPD->sizes[i].name, choice) == 0) + return QRect(0, 0, qRound(currPPD->sizes[i].width), qRound(currPPD->sizes[i].length)); + } + return QRect(); +} + +QRect QCUPSSupport::pageRect(const char *choice) const +{ + if (!currPPD) + return QRect(); + for (int i = 0; i < currPPD->num_sizes; ++i) { + if (qstrcmp(currPPD->sizes[i].name, choice) == 0) + return QRect(qRound(currPPD->sizes[i].left), + qRound(currPPD->sizes[i].length - currPPD->sizes[i].top), + qRound(currPPD->sizes[i].right - currPPD->sizes[i].left), + qRound(currPPD->sizes[i].top - currPPD->sizes[i].bottom)); + } + return QRect(); +} + +QStringList QCUPSSupport::options() const +{ + QStringList list; + collectMarkedOptions(list); + return list; +} + +bool QCUPSSupport::printerHasPPD(const char *printerName) +{ + if (!isAvailable()) + return false; + const char *ppdFile = _cupsGetPPD(printerName); + if (ppdFile) + unlink(ppdFile); + return (ppdFile != 0); +} + +QString QCUPSSupport::unicodeString(const char *s) +{ +#ifndef QT_NO_TEXTCODEC + return codec->toUnicode(s); +#else + return QLatin1String(s); +#endif +} + +void QCUPSSupport::collectMarkedOptions(QStringList& list, const ppd_group_t* group) const +{ + if (group == 0) { + if (!currPPD) + return; + for (int i = 0; i < currPPD->num_groups; ++i) { + collectMarkedOptions(list, &currPPD->groups[i]); + collectMarkedOptionsHelper(list, &currPPD->groups[i]); + } + } else { + for (int i = 0; i < group->num_subgroups; ++i) + collectMarkedOptionsHelper(list, &group->subgroups[i]); + } +} + +void QCUPSSupport::collectMarkedOptionsHelper(QStringList& list, const ppd_group_t* group) const +{ + for (int i = 0; i < group->num_options; ++i) { + for (int j = 0; j < group->options[i].num_choices; ++j) { + if (group->options[i].choices[j].marked == 1 && qstrcmp(group->options[i].choices[j].choice, group->options[i].defchoice) != 0) + list << QString::fromLocal8Bit(group->options[i].keyword) << QString::fromLocal8Bit(group->options[i].choices[j].choice); + } + } +} + +QPair<int, QString> QCUPSSupport::tempFd() +{ + char filename[512]; + int fd = _cupsTempFd(filename, 512); + return QPair<int, QString>(fd, QString::fromLocal8Bit(filename)); +} + +// Prints the given file and returns a job id. +int QCUPSSupport::printFile(const char * printerName, const char * filename, const char * title, + int num_options, cups_option_t * options) +{ + return _cupsPrintFile(printerName, filename, title, num_options, options); +} + +QCUPSSupport::Printer::Printer(const QString &n) : name(n), isDefault(false), cupsPrinterIndex(-1) +{ +} + +QList<QCUPSSupport::Printer> QCUPSSupport::availableUnixPrinters() +{ + QList<Printer> printers; + +#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY) + if (QCUPSSupport::isAvailable()) { + QCUPSSupport cups; + int cupsPrinterCount = cups.availablePrintersCount(); + const cups_dest_t* cupsPrinters = cups.availablePrinters(); + for (int i = 0; i < cupsPrinterCount; ++i) { + QString printerName(QString::fromLocal8Bit(cupsPrinters[i].name)); + if (cupsPrinters[i].instance) + printerName += QLatin1Char('/') + QString::fromLocal8Bit(cupsPrinters[i].instance); + + Printer p(printerName); + if (cupsPrinters[i].is_default) + p.isDefault = true; + p.cupsPrinterIndex = i; + printers.append(p); + } + } else +#endif + { + QList<QPrinterDescription> lprPrinters; + int defprn = qt_getLprPrinters(lprPrinters); + // populating printer combo + foreach (const QPrinterDescription &description, lprPrinters) + printers.append(Printer(description.name)); + if (defprn >= 0 && defprn < printers.size()) + printers[defprn].isDefault = true; + } + + return printers; +} + +QList<QPrinter::PaperSize> QCUPSSupport::getCupsPrinterPaperSizes(int cupsPrinterIndex) +{ + return qt_getCupsPrinterPaperSizes(cupsPrinterIndex); +} + +QT_END_NAMESPACE + +#endif // QT_NO_CUPS |