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# kmvirtualmanager.cpp

    00001 /*
    00002  *  This file is part of the KDE libraries
    00003  *  Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be>
    00004  *
    00005  *  This library is free software; you can redistribute it and/or
    00006  *  modify it under the terms of the GNU Library General Public
    00007  *  License version 2 as published by the Free Software Foundation.
    00008  *
    00009  *  This library is distributed in the hope that it will be useful,
    00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012  *  Library General Public License for more details.
    00013  *
    00014  *  You should have received a copy of the GNU Library General Public License
    00015  *  along with this library; see the file COPYING.LIB.  If not, write to
    00016  *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00017  *  Boston, MA 02111-1307, USA.
    00018  **/
    00019
    00020 #include "kmvirtualmanager.h"
    00021 #include "kmprinter.h"
    00022 #include "kmfactory.h"
    00023 #include "kmmanager.h"
    00024 #include "kprinter.h"
    00025
    00026 #include <stdlib.h>
    00027 #include <qfile.h>
    00028 #include <qtextstream.h>
    00029 #include <qdir.h>
    00030 #include <qfileinfo.h>
    00031 #include <klocale.h>
    00032 #include <kstandarddirs.h>
    00033 #include <kurl.h>
    00034 #include <kdebug.h>
    00035 #include <kmessagebox.h>
    00036
    00037 #include <unistd.h>
    00038
    00039 static QString instanceName(const QString& prname, const QString& instname)
    00040 {
    00041     QString str(prname);
    00042     if (!instname.isEmpty())
    00043         str.append("/"+instname);
    00044     return str;
    00045 }
    00046
    00047 KMVirtualManager::KMVirtualManager(KMManager *parent, const char *name)
    00048 : QObject(parent,name), m_manager(parent)
    00049 {
    00050 }
    00051
    00052 KMVirtualManager::~KMVirtualManager()
    00053 {
    00054 }
    00055
    00056 KMPrinter* KMVirtualManager::findPrinter(const QString& name)
    00057 {
    00058         return m_manager->findPrinter(name);
    00059 }
    00060
    00061 KMPrinter* KMVirtualManager::findInstance(KMPrinter *p, const QString& name)
    00062 {
    00063     QString instname(instanceName(p->printerName(),name));
    00064     return findPrinter(instname);
    00065 }
    00066
    00067 void KMVirtualManager::addPrinter(KMPrinter *p)
    00068 {
    00069     if (p && p->isValid())
    00070     {
    00071         KMPrinter   *other = findPrinter(p->name());
    00072         if (other)
    00073         {
    00074             other->copy(*p);
    00075             // Replace default options with the new loaded ones: this is needed
    00076             // if we want to handle 2 lpoptions correctly (system-wide and local).
    00077             // Anyway, the virtual printers will be reloaded only if something has
    00078             // changed in one of the files, so it's better to reset everything, to
    00079             // be sure to use the new changes. Edited options will be left unchanged.
    00080             other->setDefaultOptions(p->defaultOptions());
    00081             delete p;
    00082         }
    00083         else
    00084                         m_manager->addPrinter(p);
    00085     }
    00086     else
    00087         delete p;
    00088 }
    00089
    00090 void KMVirtualManager::setDefault(KMPrinter *p, bool saveflag)
    00091 {
    00092         m_manager->setSoftDefault(p);
    00093         m_defaultprinter = (p ? p->printerName() : QString::null);
    00094     if (saveflag) triggerSave();
    00095 }
    00096
    00097 bool KMVirtualManager::isDefault(KMPrinter *p, const QString& name)
    00098 {
    00099     QString instname(instanceName(p->printerName(),name));
    00100     KMPrinter   *printer = findPrinter(instname);
    00101     if (printer)
    00102         return printer->isSoftDefault();
    00103     else
    00104         return false;
    00105 }
    00106
    00107 void KMVirtualManager::create(KMPrinter *p, const QString& name)
    00108 {
    00109     QString instname = instanceName(p->printerName(),name);
    00110     if (findPrinter(instname) != NULL) return;
    00111     KMPrinter   *printer = new KMPrinter;
    00112     printer->setName(instname);
    00113     printer->setPrinterName(p->printerName());
    00114     printer->setInstanceName(name);
    00115     if (!name.isEmpty())
    00116         printer->setType(p->type()|KMPrinter::Virtual);
    00117     // we need some options to know how to load the driver
    00118     if (p->isSpecial())
    00119         printer->setOptions(p->options());
    00120     m_manager->addPrinter(printer);
    00121     triggerSave();
    00122 }
    00123
    00124 void KMVirtualManager::copy(KMPrinter *p, const QString& src, const QString& name)
    00125 {
    00126     QString instsrc(instanceName(p->printerName(),src)), instname(instanceName(p->printerName(),name));
    00127     KMPrinter   *prsrc = findPrinter(instsrc);
    00128     if (!prsrc || findPrinter(instname) != NULL) return;
    00129     KMPrinter   *printer = new KMPrinter;
    00130     printer->copy(*prsrc);
    00131     printer->setName(instname);
    00132     printer->setInstanceName(name);
    00133         printer->setDefaultOptions(prsrc->defaultOptions());
    00134         m_manager->addPrinter(printer);
    00135     triggerSave();
    00136 }
    00137
    00138 void KMVirtualManager::remove(KMPrinter *p, const QString& name)
    00139 {
    00140         QString instname = instanceName(p->printerName(),name);
    00141     KMPrinter   *printer = findPrinter(instname);
    00142     if (!printer) return;
    00143         if (name.isEmpty())
    00144         { // remove default instance => only remove options, keep the KMPrinter object
    00145                 printer->setDefaultOptions(QMap<QString,QString>());
    00146                 printer->setEditedOptions(QMap<QString,QString>());
    00147                 printer->setEdited(false);
    00148         }
    00149         else
    00150             m_manager->m_printers.removeRef(printer);
    00151     triggerSave();
    00152 }
    00153
    00154 void KMVirtualManager::setAsDefault(KMPrinter *p, const QString& name, QWidget *parent)
    00155 {
    00156     QString instname(instanceName(p->printerName(),name));
    00157
    00158     if ( p->isSpecial() )
    00159     {
    00160         if ( KMessageBox::warningYesNo( parent,
    00161                     i18n( "<qt>You are about to set a pseudo-printer as your personal default. "
    00162                           "This setting is specific to KDE and will not be available outside KDE "
    00163                           "applications. Note that this will only make your personal default printer "
    00164                           "as undefined for non-KDE applications and should not prevent you from "
    00165                           "printing normally. Do you really want to set <b>%1</b> as your personal default?</qt>" ).arg( instname ),
    00166                     QString::null, KStdGuiItem::yes(), KStdGuiItem::no(), "setSpecialAsDefault" ) == KMessageBox::No )
    00167             return;
    00168     }
    00169
    00170     KMPrinter   *printer = findPrinter(instname);
    00171     if (!printer)
    00172     { // create it if necessary
    00173         create(p,name);
    00174         printer = findPrinter(instname);
    00175     }
    00176     if (printer)
    00177         setDefault(printer,true);
    00178 }
    00179
    00180 void KMVirtualManager::refresh()
    00181 {
    00182     QFileInfo   fi(QDir::homeDirPath() + QFile::decodeName("/.lpoptions"));
    00183     QFileInfo   fi2(QFile::decodeName("/etc/cups/lpoptions"));
    00184
    00185     // if root, then only use global file: trick -> use twice the same file
    00186     if (getuid() == 0)
    00187         fi.setFile(fi2.absFilePath());
    00188
    00189     if (!m_checktime.isValid() || m_checktime < QMAX(fi.lastModified(),fi2.lastModified()))
    00190     {
    00191                 m_defaultprinter = QString::null;
    00192         if (fi2.exists())
    00193             loadFile(fi2.absFilePath());
    00194         if (fi.exists() && fi.absFilePath() != fi2.absFilePath())
    00195                     loadFile(fi.absFilePath());
    00196         m_checktime = QMAX(fi.lastModified(),fi2.lastModified());
    00197     }
    00198         else
    00199         { // parse printers looking for instances -> undiscarded them, real printers
    00200           // are undiscarded by the manager itself. Also update printer status.
    00201                 QPtrListIterator<KMPrinter>        it(m_manager->m_printers);
    00202                 for (;it.current();++it)
    00203                         if (!it.current()->instanceName().isEmpty())
    00204             {
    00205                 checkPrinter(it.current());
    00206                 if (it.current()->isValid()) it.current()->setDiscarded(false);
    00207             }
    00208         }
    00209 }
    00210
    00211 void KMVirtualManager::checkPrinter(KMPrinter *p)
    00212 {
    00213     KMPrinter   *realprinter = m_manager->findPrinter(p->printerName());
    00214     if (!realprinter || realprinter->isDiscarded())
    00215     {
    00216         p->setType(KMPrinter::Invalid);
    00217         p->setState(KMPrinter::Unknown);
    00218     }
    00219     else
    00220     {
    00221         if (!p->instanceName().isEmpty())
    00222             p->setType(realprinter->type()|KMPrinter::Virtual);
    00223         p->setState(realprinter->state());
    00224     }
    00225 }
    00226
    00227 QString KMVirtualManager::defaultPrinterName()
    00228 {
    00229         return m_defaultprinter;
    00230 }
    00231
    00232 void KMVirtualManager::virtualList(QPtrList<KMPrinter>& list, const QString& prname)
    00233 {
    00234     // load printers if necessary
    00235     refresh();
    00236
    00237     // then look for instances
    00238     list.setAutoDelete(false);
    00239     list.clear();
    00240     kdDebug(500) << "KMVirtualManager::virtualList() prname=" << prname << endl;
    00241     QPtrListIterator<KMPrinter> it(m_manager->m_printers);
    00242     for (;it.current();++it)
    00243         if (it.current()->printerName() == prname)
    00244             list.append(it.current());
    00245 }
    00246
    00247 void KMVirtualManager::loadFile(const QString& filename)
    00248 {
    00249     QFile   f(filename);
    00250     if (f.exists() && f.open(IO_ReadOnly))
    00251     {
    00252         QTextStream t(&f);
    00253
    00254         QString     line;
    00255         QStringList words;
    00256         QStringList pair;
    00257         KMPrinter   *printer, *realprinter;
    00258
    00259         while (!t.eof())
    00260         {
    00261             line = t.readLine().stripWhiteSpace();
    00262             if (line.isEmpty()) continue;
    00263             words = QStringList::split(' ',line,false);
    00264             if (words.count() < 2) continue;
    00265             pair = QStringList::split('/',words[1],false);
    00266             realprinter = m_manager->findPrinter(KURL::decode_string(pair[0]));
    00267             if (realprinter && !realprinter->isDiscarded())
    00268             { // keep only instances corresponding to an existing and
    00269               // non discarded printer.
    00270                 // "clone" the real printer and modify settings as needed
    00271                 printer = new KMPrinter(*realprinter);
    00272                 printer->setName(KURL::decode_string(words[1]));
    00273                 printer->setPrinterName(KURL::decode_string(pair[0]));
    00274                 if (pair.count() > 1)
    00275                 {
    00276                     printer->setInstanceName(KURL::decode_string(pair[1]));
    00277                     printer->addType(KMPrinter::Virtual);
    00278                 }
    00279                 // parse options
    00280                 for (uint i=2; i<words.count(); i++)
    00281                 {
    00282                     pair = QStringList::split('=',words[i],false);
    00283                     printer->setDefaultOption(pair[0],(pair.count() > 1 ? pair[1] : QString::null));
    00284                 }
    00285                 // add printer to the manager
    00286                 addPrinter(printer);    // don't use "printer" after this point !!!
    00287                 // check default state
    00288                 if (words[0].lower().startsWith("default"))
    00289                     setDefault(findPrinter(KURL::decode_string(words[1])),false);
    00290             }
    00291         }
    00292     }
    00293 }
    00294
    00295 void KMVirtualManager::triggerSave()
    00296 {
    00297     QString filename;
    00298     if (getuid() == 0)
    00299     {
    00300         if (KStandardDirs::makeDir(QFile::decodeName("/etc/cups")))
    00301             filename = QFile::decodeName("/etc/cups/lpoptions");
    00302     }
    00303     else
    00304         filename = QDir::homeDirPath() + QFile::decodeName("/.lpoptions");
    00305     if (!filename.isEmpty())
    00306     {
    00307         saveFile(filename);
    00308         m_checktime = QFileInfo(filename).lastModified();
    00309     }
    00310 }
    00311
    00312 void KMVirtualManager::saveFile(const QString& filename)
    00313 {
    00314     QFile   f(filename);
    00315     if (f.open(IO_WriteOnly))
    00316     {
    00317         QTextStream t(&f);
    00318         QPtrListIterator<KMPrinter> it(m_manager->m_printers);
    00319         for (;it.current();++it)
    00320         {
    00321             if (it.current()->isSpecial())
    00322             {
    00323                 t << ( it.current()->isSoftDefault() ? "DefaultSpecial " : "Special " );
    00324                 t << KURL::encode_string_no_slash( it.current()->printerName() );
    00325                 if ( !it.current()->instanceName().isEmpty() )
    00326                     t << "/" << KURL::encode_string_no_slash( it.current()->instanceName() );
    00327             }
    00328             else
    00329                 t << (it.current()->isSoftDefault() ? "Default " : "Dest ") << it.current()->name();
    00330             QMap<QString,QString>   opts = it.current()->defaultOptions();
    00331             for (QMap<QString,QString>::ConstIterator oit=opts.begin(); oit!=opts.end(); ++oit)
    00332             {
    00333                 t << ' ' << oit.key();
    00334                 if (!oit.data().isEmpty())
    00335                     t << '=' << oit.data();
    00336             }
    00337             t << endl;
    00338         }
    00339     }
    00340 }
    00341
    00342 bool KMVirtualManager::testInstance(KMPrinter *p)
    00343 {
    00344     QString testpage = KMManager::self()->testPage();
    00345     if (testpage.isEmpty())
    00346         return false;
    00347     else
    00348     {
    00349         KPrinter    pr;
    00350         pr.setPrinterName(p->printerName());
    00351         pr.setSearchName(p->name());
    00352         pr.setOptions(p->defaultOptions());
    00353         return (pr.printFiles(testpage));
    00354     }
    00355 }
    00356
    00357 void KMVirtualManager::reload()
    00358 {
    00359     reset();
    00360 }
    00361
    00362 void KMVirtualManager::configChanged()
    00363 {
    00364     reset();
    00365 }

This file is part of the documentation for kdeprint Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
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