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okular/core/fileprinter.cpp
John Layt 2550898805 Fixes to FilePrinter for Qt 4.4: 
1) detectCupsService() finally works because QTCPSocket finally works.
   Assumes Cups is on localhost:631 which is a compromise as Qt won't
   even tell us if it is using Cups, let alone where Cups is.

2) Duplex printing obeys user selected option from dialog rather than 
   just guessing.

3) If custom page margins set then respect these


svn path=/trunk/KDE/kdegraphics/okular/; revision=895905
2008-12-11 23:04:07 +00:00

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/***************************************************************************
* Copyright (C) 2007 by John Layt <john@layt.net> *
* *
* FilePrinterPreview based on KPrintPreview (originally LGPL) *
* Copyright (c) 2007 Alex Merry <huntedhacker@tiscali.co.uk> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "fileprinter.h"
#include <QtGui/QPrinter>
#include <QPrintEngine>
#include <QStringList>
#include <QFile>
#include <QSize>
#include <QtCore/QFile>
#include <QtGui/QLabel>
#include <QtGui/QShowEvent>
#include <QtNetwork/QTcpSocket>
#include <KProcess>
#include <KShell>
#include <klocalsocket.h>
#include <kstandarddirs.h>
#include <ktempdir.h>
#include <kdebug.h>
#include "debug_p.h"
using namespace Okular;
int FilePrinter::printFile( QPrinter &printer, const QString file, FileDeletePolicy fileDeletePolicy,
PageSelectPolicy pageSelectPolicy, const QString &pageRange )
{
FilePrinter fp;
return fp.doPrintFiles( printer, QStringList( file ), fileDeletePolicy, pageSelectPolicy, pageRange );
}
int FilePrinter::printFiles( QPrinter &printer, const QStringList &fileList, FileDeletePolicy fileDeletePolicy )
{
FilePrinter fp;
return fp.doPrintFiles( printer, fileList, fileDeletePolicy, FilePrinter::ApplicationSelectsPages, QString() );
}
int FilePrinter::doPrintFiles( QPrinter &printer, QStringList fileList, FileDeletePolicy fileDeletePolicy,
PageSelectPolicy pageSelectPolicy, const QString &pageRange )
{
//Decide what executable to use to print with, need the CUPS version of lpr if available
//Some distros name the CUPS version of lpr as lpr-cups or lpr.cups so try those first
//before default to lpr, or failing that to lp
QString exe;
if ( !KStandardDirs::findExe("lpr-cups").isEmpty() ) {
exe = "lpr-cups";
} else if ( !KStandardDirs::findExe("lpr.cups").isEmpty() ) {
exe = "lpr.cups";
} else if ( !KStandardDirs::findExe("lpr").isEmpty() ) {
exe = "lpr";
} else if ( !KStandardDirs::findExe("lp").isEmpty() ) {
exe = "lp";
} else {
return -9;
}
if ( fileList.size() < 1 ) {
return -8;
}
for (QStringList::ConstIterator it = fileList.constBegin(); it != fileList.constEnd(); ++it) {
if (!QFile::exists(*it)) {
return -7;
}
}
if ( printer.printerState() == QPrinter::Aborted || printer.printerState() == QPrinter::Error ) {
return -6;
}
// Print to File if a filename set, assumes there must be only 1 file
if ( !printer.outputFileName().isEmpty() ) {
if ( QFile::exists( printer.outputFileName() ) ) {
QFile::remove( printer.outputFileName() );
}
int res = QFile::copy( fileList[0], printer.outputFileName() );
if ( fileDeletePolicy == FilePrinter::SystemDeletesFiles ) {
QFile::remove( fileList[0] );
}
if ( res ) return 0;
}
bool useCupsOptions = cupsAvailable();
QStringList argList = printArguments( printer, fileDeletePolicy, pageSelectPolicy, useCupsOptions, pageRange, exe )
<< fileList;
kDebug(OkularDebug) << "Executing" << exe << "with arguments" << argList;
int ret = KProcess::execute( exe, argList );
// If we used the Cups options and the command failed, try again without them in case Cups lpr/lp not installed.
// I'm not convinced this will work, I don't think KProcess returns the result of the command, but rather
// that it was able to be executed?
if ( useCupsOptions && ret < 0 ) {
argList = printArguments( printer, fileDeletePolicy, pageSelectPolicy, useCupsOptions, pageRange, exe )
<< fileList;
kDebug(OkularDebug) << "Retrying" << exe << "without CUPS arguments" << argList;
ret = KProcess::execute( exe, argList );
}
return ret;
}
QList<int> FilePrinter::pageList( QPrinter &printer, int lastPage, const QList<int> &selectedPageList )
{
if ( printer.printRange() == QPrinter::Selection) {
return selectedPageList;
}
int startPage, endPage;
QList<int> list;
if ( printer.printRange() == QPrinter::PageRange ) {
startPage = printer.fromPage();
endPage = printer.toPage();
} else { //AllPages
startPage = 1;
endPage = lastPage;
}
for (int i = startPage; i <= endPage; i++ ) {
list << i;
}
return list;
}
QString FilePrinter::pageRange( QPrinter &printer, int lastPage, const QList<int> &selectedPageList )
{
if ( printer.printRange() == QPrinter::Selection) {
return pageListToPageRange( selectedPageList );
}
if ( printer.printRange() == QPrinter::PageRange ) {
return QString("%1-%2").arg(printer.fromPage()).arg(printer.toPage());
}
return QString("1-%2").arg( lastPage );
}
QString FilePrinter::pageListToPageRange( const QList<int> &pageList )
{
QString pageRange;
int count = pageList.count();
int i = 0;
int seqStart = i;
int seqEnd;
while ( i != count ) {
if ( i + 1 == count || pageList[i] + 1 != pageList[i+1] ) {
seqEnd = i;
if ( !pageRange.isEmpty() ) {
pageRange.append(",");
}
if ( seqStart == seqEnd ) {
pageRange.append(pageList[i]);
} else {
pageRange.append("%1-%2").arg(seqStart).arg(seqEnd);
}
seqStart = i + 1;
}
i++;
}
return pageRange;
}
bool FilePrinter::cupsAvailable()
{
FilePrinter fp;
return ( fp.detectCupsConfig() && fp.detectCupsService() );
}
bool FilePrinter::detectCupsService()
{
QTcpSocket qsock;
qsock.connectToHost("localhost", 631);
bool rtn = qsock.waitForConnected() && qsock.isValid();
qsock.abort();
return rtn;
}
bool FilePrinter::detectCupsConfig()
{
if ( QFile::exists("/etc/cups/cupsd.conf") ) return true;
if ( QFile::exists("/usr/etc/cups/cupsd.conf") ) return true;
if ( QFile::exists("/usr/local/etc/cups/cupsd.conf") ) return true;
if ( QFile::exists("/opt/etc/cups/cupsd.conf") ) return true;
if ( QFile::exists("/opt/local/etc/cups/cupsd.conf") ) return true;
return false;
}
QSize FilePrinter::psPaperSize( QPrinter &printer )
{
QSize size;
switch ( printer.pageSize() ) {
case QPrinter::A0: size = QSize( 2384, 3370 ); break;
case QPrinter::A1: size = QSize( 1684, 2384 ); break;
case QPrinter::A2: size = QSize( 1191, 1684 ); break;
case QPrinter::A3: size = QSize( 842, 1191 ); break;
case QPrinter::A4: size = QSize( 595, 842 ); break;
case QPrinter::A5: size = QSize( 420, 595 ); break;
case QPrinter::A6: size = QSize( 298, 420 ); break;
case QPrinter::A7: size = QSize( 210, 298 ); break;
case QPrinter::A8: size = QSize( 147, 210 ); break;
case QPrinter::A9: size = QSize( 105, 147 ); break;
case QPrinter::B0: size = QSize( 2835, 4008 ); break;
case QPrinter::B1: size = QSize( 2004, 2835 ); break;
case QPrinter::B2: size = QSize( 1417, 2004 ); break;
case QPrinter::B3: size = QSize( 1001, 1417 ); break;
case QPrinter::B4: size = QSize( 709, 1001 ); break;
case QPrinter::B5: size = QSize( 499, 709 ); break;
case QPrinter::B6: size = QSize( 354, 499 ); break;
case QPrinter::B7: size = QSize( 249, 354 ); break;
case QPrinter::B8: size = QSize( 176, 249 ); break;
case QPrinter::B9: size = QSize( 125, 176 ); break;
case QPrinter::B10: size = QSize( 88, 125 ); break;
case QPrinter::C5E: size = QSize( 459, 649 ); break;
case QPrinter::Comm10E: size = QSize( 297, 684 ); break;
case QPrinter::DLE: size = QSize( 312, 624 ); break;
case QPrinter::Executive: size = QSize( 522, 756 ); break;
case QPrinter::Folio: size = QSize( 595, 935 ); break;
case QPrinter::Ledger: size = QSize( 1224, 792 ); break;
case QPrinter::Legal: size = QSize( 612, 1008 ); break;
case QPrinter::Letter: size = QSize( 612, 792 ); break;
case QPrinter::Tabloid: size = QSize( 792, 1224 ); break;
case QPrinter::Custom: return QSize( (int) printer.widthMM() * ( 25.4 / 72 ),
(int) printer.heightMM() * ( 25.4 / 72 ) );
default: return QSize();
}
if ( printer.orientation() == QPrinter::Landscape ) {
size.transpose();
}
return size;
}
QStringList FilePrinter::printArguments( QPrinter &printer, FileDeletePolicy fileDeletePolicy,
PageSelectPolicy pageSelectPolicy, bool useCupsOptions,
const QString &pageRange, const QString &version )
{
QStringList argList;
if ( ! destination( printer, version ).isEmpty() ) {
argList << destination( printer, version );
}
if ( ! copies( printer, version ).isEmpty() ) {
argList << copies( printer, version );
}
if ( ! jobname( printer, version ).isEmpty() ) {
argList << jobname( printer, version );
}
if ( ! pages( printer, pageSelectPolicy, pageRange, useCupsOptions, version ).isEmpty() ) {
argList << pages( printer, pageSelectPolicy, pageRange, useCupsOptions, version );
}
if ( useCupsOptions && ! cupsOptions( printer ).isEmpty() ) {
argList << cupsOptions( printer );
}
if ( ! deleteFile( printer, fileDeletePolicy, version ).isEmpty() ) {
argList << deleteFile( printer, fileDeletePolicy, version );
}
if ( version == "lp" ) {
argList << "--";
}
return argList;
}
QStringList FilePrinter::destination( QPrinter &printer, const QString &version )
{
if ( version == "lp" ) {
return QStringList("-d") << printer.printerName();
}
if ( version.startsWith( "lpr" ) ) {
return QStringList("-P") << printer.printerName();
}
return QStringList();
}
QStringList FilePrinter::copies( QPrinter &printer, const QString &version )
{
// If CUPS will always return 1 regardless what the user chooses.
int cp = printer.numCopies();
if ( version == "lp" ) {
return QStringList("-n") << QString("%1").arg( cp );
}
if ( version.startsWith( "lpr" ) ) {
return QStringList() << QString("-#%1").arg( cp );
}
return QStringList();
}
QStringList FilePrinter::jobname( QPrinter &printer, const QString &version )
{
if ( ! printer.docName().isEmpty() ) {
if ( version == "lp" ) {
return QStringList("-t") << printer.docName();
}
if ( version.startsWith( "lpr" ) ) {
return QStringList("-J") << printer.docName();
}
}
return QStringList();
}
QStringList FilePrinter::deleteFile( QPrinter &printer, FileDeletePolicy fileDeletePolicy, const QString &version )
{
if ( fileDeletePolicy == FilePrinter::SystemDeletesFiles && version.startsWith( "lpr" ) ) {
return QStringList("-r");
}
return QStringList();
}
QStringList FilePrinter::pages( QPrinter &printer, PageSelectPolicy pageSelectPolicy, const QString &pageRange,
bool useCupsOptions, const QString &version )
{
if ( pageSelectPolicy == FilePrinter::SystemSelectsPages ) {
if ( printer.printRange() == QPrinter::Selection && ! pageRange.isEmpty() ) {
if ( version == "lp" ) {
return QStringList("-P") << pageRange ;
}
if ( version.startsWith( "lpr" ) && useCupsOptions ) {
return QStringList("-o") << QString("page-ranges=%1").arg( pageRange );
}
}
if ( printer.printRange() == QPrinter::PageRange ) {
if ( version == "lp" ) {
return QStringList("-P") << QString("%1-%2").arg( printer.fromPage() )
.arg( printer.toPage() );
}
if ( version.startsWith( "lpr" ) && useCupsOptions ) {
return QStringList("-o") << QString("page-ranges=%1-%2").arg( printer.fromPage() )
.arg( printer.toPage() );
}
}
}
return QStringList(); // AllPages
}
QStringList FilePrinter::cupsOptions( QPrinter &printer )
{
QStringList optionList;
if ( ! optionMedia( printer ).isEmpty() ) {
optionList << optionMedia( printer );
}
if ( ! optionOrientation( printer ).isEmpty() ) {
optionList << optionOrientation( printer );
}
if ( ! optionDoubleSidedPrinting( printer ).isEmpty() ) {
optionList << optionDoubleSidedPrinting( printer );
}
if ( ! optionPageOrder( printer ).isEmpty() ) {
optionList << optionPageOrder( printer );
}
if ( ! optionCollateCopies( printer ).isEmpty() ) {
optionList << optionCollateCopies( printer );
}
optionList << optionCupsProperties( printer );
return optionList;
}
QStringList FilePrinter::optionMedia( QPrinter &printer )
{
if ( ! mediaPageSize( printer ).isEmpty() &&
! mediaPaperSource( printer ).isEmpty() ) {
return QStringList("-o") <<
QString("media=%1,%2").arg( mediaPageSize( printer ) )
.arg( mediaPaperSource( printer ) );
}
if ( ! mediaPageSize( printer ).isEmpty() ) {
return QStringList("-o") <<
QString("media=%1").arg( mediaPageSize( printer ) );
}
if ( ! mediaPaperSource( printer ).isEmpty() ) {
return QStringList("-o") <<
QString("media=%1").arg( mediaPaperSource( printer ) );
}
return QStringList();
}
QString FilePrinter::mediaPageSize( QPrinter &printer )
{
switch ( printer.pageSize() ) {
case QPrinter::A0: return "A0";
case QPrinter::A1: return "A1";
case QPrinter::A2: return "A2";
case QPrinter::A3: return "A3";
case QPrinter::A4: return "A4";
case QPrinter::A5: return "A5";
case QPrinter::A6: return "A6";
case QPrinter::A7: return "A7";
case QPrinter::A8: return "A8";
case QPrinter::A9: return "A9";
case QPrinter::B0: return "B0";
case QPrinter::B1: return "B1";
case QPrinter::B10: return "B10";
case QPrinter::B2: return "B2";
case QPrinter::B3: return "B3";
case QPrinter::B4: return "B4";
case QPrinter::B5: return "B5";
case QPrinter::B6: return "B6";
case QPrinter::B7: return "B7";
case QPrinter::B8: return "B8";
case QPrinter::B9: return "B9";
case QPrinter::C5E: return "C5"; //Correct Translation?
case QPrinter::Comm10E: return "Comm10"; //Correct Translation?
case QPrinter::DLE: return "DL"; //Correct Translation?
case QPrinter::Executive: return "Executive";
case QPrinter::Folio: return "Folio";
case QPrinter::Ledger: return "Ledger";
case QPrinter::Legal: return "Legal";
case QPrinter::Letter: return "Letter";
case QPrinter::Tabloid: return "Tabloid";
case QPrinter::Custom: return QString("Custom.%1x%2mm")
.arg( printer.heightMM() )
.arg( printer.widthMM() );
default: return QString();
}
}
// What about Upper and MultiPurpose? And others in PPD???
QString FilePrinter::mediaPaperSource( QPrinter &printer )
{
switch ( printer.paperSource() ) {
case QPrinter::Auto: return QString();
case QPrinter::Cassette: return "Cassette";
case QPrinter::Envelope: return "Envelope";
case QPrinter::EnvelopeManual: return "EnvelopeManual";
case QPrinter::FormSource: return "FormSource";
case QPrinter::LargeCapacity: return "LargeCapacity";
case QPrinter::LargeFormat: return "LargeFormat";
case QPrinter::Lower: return "Lower";
case QPrinter::MaxPageSource: return "MaxPageSource";
case QPrinter::Middle: return "Middle";
case QPrinter::Manual: return "Manual";
case QPrinter::OnlyOne: return "OnlyOne";
case QPrinter::Tractor: return "Tractor";
case QPrinter::SmallFormat: return "SmallFormat";
default: return QString();
}
}
QStringList FilePrinter::optionOrientation( QPrinter &printer )
{
switch ( printer.orientation() ) {
case QPrinter::Portrait: return QStringList("-o") << "portrait";
case QPrinter::Landscape: return QStringList("-o") << "landscape";
default: return QStringList();
}
}
QStringList FilePrinter::optionDoubleSidedPrinting( QPrinter &printer )
{
switch ( printer.duplex() ) {
case QPrinter::DuplexNone: return QStringList("-o") << "sides=one-sided";
case QPrinter::DuplexAuto: if ( printer.orientation() == QPrinter::Landscape ) {
return QStringList("-o") << "sides=two-sided-short-edge";
} else {
return QStringList("-o") << "sides=two-sided-long-edge";
}
case QPrinter::DuplexLongSide: return QStringList("-o") << "sides=two-sided-long-edge";
case QPrinter::DuplexShortSide: return QStringList("-o") << "sides=two-sided-short-edge";
default: return QStringList(); //Use printer default
}
}
QStringList FilePrinter::optionPageOrder( QPrinter &printer )
{
if ( printer.pageOrder() == QPrinter::LastPageFirst ) {
return QStringList("-o") << "outputorder=reverse";
}
return QStringList("-o") << "outputorder=normal";
}
QStringList FilePrinter::optionCollateCopies( QPrinter &printer )
{
if ( printer.collateCopies() ) {
return QStringList("-o") << "Collate=True";
}
return QStringList("-o") << "Collate=False";
}
QStringList FilePrinter::optionPageMargins( QPrinter &printer )
{
if (printer.printEngine()->property(QPrintEngine::PPK_PageMargins).isNull()) {
return QStringList();
} else {
qreal l, t, r, b;
printer.getPageMargins( &l, &t, &r, &b, QPrinter::Point );
return QStringList("-o") << QString("page-left=%1").arg(l)
<< "-o" << QString("page-top=%1").arg(t)
<< "-o" << QString("page-right=%1").arg(r)
<< "-o" << QString("page-bottom=%1").arg(b);
}
}
QStringList FilePrinter::optionCupsProperties( QPrinter &printer )
{
QStringList dialogOptions = printer.printEngine()->property(QPrintEngine::PrintEnginePropertyKey(0xfe00)).toStringList();
QStringList cupsOptions;
for ( int i = 0; i < dialogOptions.count(); i = i + 2 ) {
if ( dialogOptions[i+1].isEmpty() ) {
cupsOptions << "-o" << dialogOptions[i];
} else {
cupsOptions << "-o" << dialogOptions[i] + "=" + dialogOptions[i+1];
}
}
return cupsOptions;
}
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