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/**
* Copyright (C) 2000-2002 the KGhostView authors. See file AUTHORS.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
// Add header files alphabetically
#include <qlayout.h>
#include <kconfig.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <kinstance.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kprocess.h>
#include <kstandarddirs.h>
#include <kconfigdialog.h>
#include "configuration.h"
#include "kgv_view.h"
#include "kgvfactory.h"
#include "generalsettingswidget.h"
#include "gssettingswidget.h"
#include "kgvconfigdialog.h"
namespace {
QString getGSVersion( QString fullPathToExec )
{
QString res;
QString chkVersion = KProcess::quote(fullPathToExec) + " --version";
FILE* p = popen( QFile::encodeName(chkVersion), "r" );
if( p ) {
// FIXME: a badly configured interpreter can hang us
QFile qp;
qp.open( IO_ReadOnly, p );
qp.readLine( res, 80 );
qp.close();
pclose( p );
res = res.stripWhiteSpace();
}
kdDebug(4500) << "kgvconfigdialog.cpp::{unamed}::getGSVersion() returning " << res << endl;
return res;
}
/* A mechanism for triggering redetection of gs versions:
*
* The idea is that whenever we find we need to workaround a certain version of gs,
* we cannot rely that there will solelly be a new kghostviewrc, but that users will
* upgrade kghostview. Therefore, whenever we want to trigger redection on a new version,
* we increment the counter below. It should have the old value from the previous version
* of kghostview and this function will get called.
*
*/
/* On a related note:
* We don't detect upgrades (or downgrades, for that matter) of gs.
* I am seeing if I can get the version out of gs as a side effect to displaying a file.
* This way, using kconfig:/Ghostscript/GS Version we will see whether the version has changed
* and trigger a redetection without the trouble of running "gs --version" on each launch.
*
* LPC (9 April 2003)
*/
/* currentRedetection value log:
*
* 1- remove -dMaxBitmap for gs 6.5x
* 2- see if it supports .setsafe ( see bug:57291 ).
*/
const int currentRedetection = 2;
/* Here are the issues we found so far in version of gs:
*
* - gs before 6.50 uses device x11alpha instead of x11
* - gs 6.5x does not work well with -dMaxBitmap=...
* - gs 6.52 and earlier as well as 7.0x for x < 4 don't support the .setsafe operator
*
*/
QString recommendSetSafe( QString version )
{
if ( version < QString::number( 6.53 ) ) return QString::number( 6.53 );
if ( version[ 0 ] == '7' && version < QString::number( 7.04 ) ) return QString::number( 7.05 );
return QString::null;
}
// This function should contain all the gs version specific workarounds.
void redoGSDetection()
{
kdDebug(4500) << "kgvconfigdialog.cpp::{unnamed}::redoGSDetection()" << endl;
QString version = getGSVersion( Configuration::interpreter() );
QString recommended = recommendSetSafe( version );
if ( !recommended.isNull() ) {
KMessageBox::sorry( 0,
i18n( "Your version of gs (version %1) is too old, since it has security issues "
"which are impossible to resolve. Please upgrade to a newer version.\n"
"KGhostView will try to work with it, but it may not display any files at all.\n"
"Version %2 seems to be appropriate on your system, although newer versions will work as well." )
.arg( version )
.arg( recommended ) );
}
if ( version < QString::number( 7.00 ) )
{
QStringList arguments = QStringList::split( ' ', Configuration::antialiasingArguments() );
arguments.remove( QString::fromLatin1( "-dMaxBitmap=10000000" ) );
QString antiAliasArgs = arguments.join( " " );
Configuration::setAntialiasingArguments( antiAliasArgs );
}
Configuration::setRedetectionCounter( currentRedetection );
Configuration::setVersion( version );
}
} // namespace
void ConfigDialog::showSettings( KGVPart* main ) {
const char* name = "kghostview-settings";
if ( KConfigDialog::showDialog( name ) ) return;
if ( Configuration::redetectionCounter() < currentRedetection ) redoGSDetection();
KConfigDialog* dialog = new KConfigDialog( 0, name,
Configuration::self(), KDialogBase::IconList );
dialog->addPage( new GeneralSettingsWidget( 0, "general-settings" ),
i18n( "General" ), QString::fromLatin1( "kghostview" ) );
GSSettingsWidget *gssw = new GSSettingsWidget( 0, "gs-settings" );
dialog->addPage( gssw, i18n( "Ghostscript\nConfiguration" ), QString::fromLatin1( "pdf" ) );
gssw->setDetectedVersion(Configuration::version());
QObject::connect( dialog, SIGNAL( settingsChanged() ), main, SLOT( slotConfigurationChanged() ) );
dialog->show();
}
// vim:sw=4:sts=4:ts=8:noet
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