kdeprint Library API Documentation

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 
00036 #include <unistd.h>
00037 
00038 static QString instanceName(const QString& prname, const QString& instname)
00039 {
00040     QString str(prname);
00041     if (!instname.isEmpty())
00042         str.append("/"+instname);
00043     return str;
00044 }
00045 
00046 KMVirtualManager::KMVirtualManager(KMManager *parent, const char *name)
00047 : QObject(parent,name), m_manager(parent)
00048 {
00049 }
00050 
00051 KMVirtualManager::~KMVirtualManager()
00052 {
00053 }
00054 
00055 KMPrinter* KMVirtualManager::findPrinter(const QString& name)
00056 {
00057         return m_manager->findPrinter(name);
00058 }
00059 
00060 KMPrinter* KMVirtualManager::findInstance(KMPrinter *p, const QString& name)
00061 {
00062     QString instname(instanceName(p->printerName(),name));
00063     return findPrinter(instname);
00064 }
00065 
00066 void KMVirtualManager::addPrinter(KMPrinter *p)
00067 {
00068     if (p && p->isValid())
00069     {
00070         KMPrinter   *other = findPrinter(p->name());
00071         if (other)
00072         {
00073             other->copy(*p);
00074             // Replace default options with the new loaded ones: this is needed
00075             // if we want to handle 2 lpoptions correctly (system-wide and local).
00076             // Anyway, the virtual printers will be reloaded only if something has
00077             // changed in one of the files, so it's better to reset everything, to
00078             // be sure to use the new changes. Edited options will be left unchanged.
00079             other->setDefaultOptions(p->defaultOptions());
00080             delete p;
00081         }
00082         else
00083                         m_manager->addPrinter(p);
00084     }
00085     else
00086         delete p;
00087 }
00088 
00089 void KMVirtualManager::setDefault(KMPrinter *p, bool saveflag)
00090 {
00091         m_manager->setSoftDefault(p);
00092         m_defaultprinter = (p ? p->printerName() : QString::null);
00093     if (saveflag) triggerSave();
00094 }
00095 
00096 bool KMVirtualManager::isDefault(KMPrinter *p, const QString& name)
00097 {
00098     QString instname(instanceName(p->printerName(),name));
00099     KMPrinter   *printer = findPrinter(instname);
00100     if (printer)
00101         return printer->isSoftDefault();
00102     else
00103         return false;
00104 }
00105 
00106 void KMVirtualManager::create(KMPrinter *p, const QString& name)
00107 {
00108     QString instname = instanceName(p->printerName(),name);
00109     if (findPrinter(instname) != NULL) return;
00110     KMPrinter   *printer = new KMPrinter;
00111     printer->setName(instname);
00112     printer->setPrinterName(p->printerName());
00113     printer->setInstanceName(name);
00114     if (!name.isEmpty())
00115         printer->setType(p->type()|KMPrinter::Virtual);
00116     // we need some options to know how to load the driver
00117     if (p->isSpecial())
00118         printer->setOptions(p->options());
00119     m_manager->addPrinter(printer);
00120     triggerSave();
00121 }
00122 
00123 void KMVirtualManager::copy(KMPrinter *p, const QString& src, const QString& name)
00124 {
00125     QString instsrc(instanceName(p->printerName(),src)), instname(instanceName(p->printerName(),name));
00126     KMPrinter   *prsrc = findPrinter(instsrc);
00127     if (!prsrc || findPrinter(instname) != NULL) return;
00128     KMPrinter   *printer = new KMPrinter;
00129     printer->copy(*prsrc);
00130     printer->setName(instname);
00131     printer->setInstanceName(name);
00132         printer->setDefaultOptions(prsrc->defaultOptions());
00133         m_manager->addPrinter(printer);
00134     triggerSave();
00135 }
00136 
00137 void KMVirtualManager::remove(KMPrinter *p, const QString& name)
00138 {
00139         QString instname = instanceName(p->printerName(),name);
00140     KMPrinter   *printer = findPrinter(instname);
00141     if (!printer) return;
00142         if (name.isEmpty())
00143         { // remove default instance => only remove options, keep the KMPrinter object
00144                 printer->setDefaultOptions(QMap<QString,QString>());
00145                 printer->setEditedOptions(QMap<QString,QString>());
00146                 printer->setEdited(false);
00147         }
00148         else
00149             m_manager->m_printers.removeRef(printer);
00150     triggerSave();
00151 }
00152 
00153 void KMVirtualManager::setAsDefault(KMPrinter *p, const QString& name)
00154 {
00155     QString instname(instanceName(p->printerName(),name));
00156     KMPrinter   *printer = findPrinter(instname);
00157     if (!printer)
00158     { // create it if necessary
00159         create(p,name);
00160         printer = findPrinter(instname);
00161     }
00162     if (printer)
00163         setDefault(printer,true);
00164 }
00165 
00166 void KMVirtualManager::refresh()
00167 {
00168     QFileInfo   fi(QDir::homeDirPath() + QFile::decodeName("/.lpoptions"));
00169     QFileInfo   fi2(QFile::decodeName("/etc/cups/lpoptions"));
00170 
00171     // if root, then only use global file: trick -> use twice the same file
00172     if (getuid() == 0)
00173         fi.setFile(fi2.absFilePath());
00174 
00175     if (!m_checktime.isValid() || m_checktime < QMAX(fi.lastModified(),fi2.lastModified()))
00176     {
00177                 m_defaultprinter = QString::null;
00178         if (fi2.exists())
00179             loadFile(fi2.absFilePath());
00180         if (fi.exists() && fi.absFilePath() != fi2.absFilePath())
00181                     loadFile(fi.absFilePath());
00182         m_checktime = QMAX(fi.lastModified(),fi2.lastModified());
00183     }
00184         else
00185         { // parse printers looking for instances -> undiscarded them, real printers
00186           // are undiscarded by the manager itself. Also update printer status.
00187                 QPtrListIterator<KMPrinter>        it(m_manager->m_printers);
00188                 for (;it.current();++it)
00189                         if (!it.current()->instanceName().isEmpty())
00190             {
00191                 checkPrinter(it.current());
00192                 if (it.current()->isValid()) it.current()->setDiscarded(false);
00193             }
00194         }
00195 }
00196 
00197 void KMVirtualManager::checkPrinter(KMPrinter *p)
00198 {
00199     KMPrinter   *realprinter = m_manager->findPrinter(p->printerName());
00200     if (!realprinter || realprinter->isDiscarded())
00201     {
00202         p->setType(KMPrinter::Invalid);
00203         p->setState(KMPrinter::Unknown);
00204     }
00205     else
00206     {
00207         if (!p->instanceName().isEmpty())
00208             p->setType(realprinter->type()|KMPrinter::Virtual);
00209         p->setState(realprinter->state());
00210     }
00211 }
00212 
00213 QString KMVirtualManager::defaultPrinterName()
00214 {
00215         return m_defaultprinter;
00216 }
00217 
00218 void KMVirtualManager::virtualList(QPtrList<KMPrinter>& list, const QString& prname)
00219 {
00220     // load printers if necessary
00221     refresh();
00222 
00223     // then look for instances
00224     list.setAutoDelete(false);
00225     list.clear();
00226     kdDebug(500) << "KMVirtualManager::virtualList() prname=" << prname << endl;
00227     QPtrListIterator<KMPrinter> it(m_manager->m_printers);
00228     for (;it.current();++it)
00229         if (it.current()->printerName() == prname)
00230             list.append(it.current());
00231 }
00232 
00233 void KMVirtualManager::loadFile(const QString& filename)
00234 {
00235     QFile   f(filename);
00236     if (f.exists() && f.open(IO_ReadOnly))
00237     {
00238         QTextStream t(&f);
00239 
00240         QString     line;
00241         QStringList words;
00242         QStringList pair;
00243         KMPrinter   *printer, *realprinter;
00244 
00245         while (!t.eof())
00246         {
00247             line = t.readLine().stripWhiteSpace();
00248             if (line.isEmpty()) continue;
00249             words = QStringList::split(' ',line,false);
00250             if (words.count() < 2) continue;
00251             pair = QStringList::split('/',words[1],false);
00252             realprinter = m_manager->findPrinter(KURL::decode_string(pair[0]));
00253             if (realprinter && !realprinter->isDiscarded())
00254             { // keep only instances corresponding to an existing and
00255               // non discarded printer.
00256                 // "clone" the real printer and modify settings as needed
00257                 printer = new KMPrinter(*realprinter);
00258                 printer->setName(KURL::decode_string(words[1]));
00259                 printer->setPrinterName(KURL::decode_string(pair[0]));
00260                 if (pair.count() > 1)
00261                 {
00262                     printer->setInstanceName(KURL::decode_string(pair[1]));
00263                     printer->addType(KMPrinter::Virtual);
00264                 }
00265                 // parse options
00266                 for (uint i=2; i<words.count(); i++)
00267                 {
00268                     pair = QStringList::split('=',words[i],false);
00269                     printer->setDefaultOption(pair[0],(pair.count() > 1 ? pair[1] : QString::null));
00270                 }
00271                 // add printer to the manager
00272                 addPrinter(printer);    // don't use "printer" after this point !!!
00273                 // check default state
00274                 if (words[0].lower() == "default")
00275                     setDefault(findPrinter(words[1]),false);
00276             }
00277         }
00278     }
00279 }
00280 
00281 void KMVirtualManager::triggerSave()
00282 {
00283     QString filename;
00284     if (getuid() == 0)
00285     {
00286         if (KStandardDirs::makeDir(QFile::decodeName("/etc/cups")))
00287             filename = QFile::decodeName("/etc/cups/lpoptions");
00288     }
00289     else
00290         filename = QDir::homeDirPath() + QFile::decodeName("/.lpoptions");
00291     if (!filename.isEmpty())
00292     {
00293         saveFile(filename);
00294         m_checktime = QFileInfo(filename).lastModified();
00295     }
00296 }
00297 
00298 void KMVirtualManager::saveFile(const QString& filename)
00299 {
00300     QFile   f(filename);
00301     if (f.open(IO_WriteOnly))
00302     {
00303         QTextStream t(&f);
00304         QPtrListIterator<KMPrinter> it(m_manager->m_printers);
00305         for (;it.current();++it)
00306         {
00307             if (it.current()->isSpecial())
00308             {
00309                 t << "Special " << KURL::encode_string_no_slash( it.current()->printerName() );
00310                 if ( !it.current()->instanceName().isEmpty() )
00311                     t << "/" << KURL::encode_string_no_slash( it.current()->instanceName() );
00312             }
00313             else
00314                 t << (it.current()->isSoftDefault() ? "Default " : "Dest ") << it.current()->name();
00315             QMap<QString,QString>   opts = it.current()->defaultOptions();
00316             for (QMap<QString,QString>::ConstIterator oit=opts.begin(); oit!=opts.end(); ++oit)
00317             {
00318                 t << ' ' << oit.key();
00319                 if (!oit.data().isEmpty())
00320                     t << '=' << oit.data();
00321             }
00322             t << endl;
00323         }
00324     }
00325 }
00326 
00327 bool KMVirtualManager::testInstance(KMPrinter *p)
00328 {
00329     QString testpage = KMManager::self()->testPage();
00330     if (testpage.isEmpty())
00331         return false;
00332     else
00333     {
00334         KPrinter    pr;
00335         pr.setPrinterName(p->printerName());
00336         pr.setSearchName(p->name());
00337         pr.setOptions(p->defaultOptions());
00338         return (pr.printFiles(testpage));
00339     }
00340 }
00341 
00342 void KMVirtualManager::reload()
00343 {
00344     reset();
00345 }
00346 
00347 void KMVirtualManager::configChanged()
00348 {
00349     reset();
00350 }
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This file is part of the documentation for kdeprint Library Version 3.2.3.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Thu Sep 30 05:20:50 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2003