Long live Qt 4.5!

1 files changed, 398 insertions, 0 deletions

diff --git a/src/gui/painting/qcups.cpp b/src/gui/painting/qcups.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <qdebug.h>
+#include "qcups_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;
+    return _cupsGetPPD(printerName) != 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);
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_CUPS