const QString EncoderAssistant::version(const EncoderAssistant::Encoder encoder) {
KProcess process;
process.setOutputChannelMode(KProcess::SeparateChannels);
process.setReadChannel(KProcess::StandardError);
switch (encoder) {
case EncoderAssistant::LAME : process.setShellCommand(QString(ENCODER_LAME_BIN)+" "+QString(ENCODER_LAME_VERSION_PARA)); break;
case EncoderAssistant::OGGENC : process.setShellCommand(QString(ENCODER_OGGENC_BIN)+" "+QString(ENCODER_OGGENC_VERSION_PARA)); break;
case EncoderAssistant::FLAC : process.setShellCommand(QString(ENCODER_FLAC_BIN)+" "+QString(ENCODER_FLAC_VERSION_PARA)); break;
case EncoderAssistant::FAAC : process.setShellCommand(QString(ENCODER_FAAC_BIN)+" "+QString(ENCODER_FAAC_VERSION_PARA)); break;
case EncoderAssistant::WAVE : return "";
case EncoderAssistant::CUSTOM : return "";
default : return "";
}
process.start();
if (!process.waitForFinished()) return "";
QByteArray rawoutput = process.readAllStandardError();
if (rawoutput.size() == 0) rawoutput = process.readAllStandardOutput();
QString output(rawoutput);
QStringList list = output.trimmed().split("\n");
if (list.count()==0) return "";
QStringList words = list[0].split(" ");
if (words.count()==0) return "";
switch (encoder) {
case EncoderAssistant::LAME :
if ((words.contains("version")) && (words.indexOf("version")+1<words.count())) return words[words.indexOf("version")+1];
if (words.count()<2) return "";
return words[words.count()-2];
case EncoderAssistant::OGGENC :
case EncoderAssistant::FLAC :
return words.last();
case EncoderAssistant::FAAC :
if (list.count()<2) return "";
words = list[1].split(" ");
if (words.count()<2) return "";
if ((words.contains("FAAC")) && (words.indexOf("FAAC")+1<words.count())) return words[words.indexOf("FAAC")+1];
return words[1];
case EncoderAssistant::WAVE :
case EncoderAssistant::CUSTOM :
default : ;
}
return "";
}
void ghostscript_interface::gs_generate_graphics_file(const PageNumber& page, const QString& filename, long magnification) {
#ifdef DEBUG_PSGS
kDebug(kvs::dvi) << "ghostscript_interface::gs_generate_graphics_file( " << page << ", " << filename << " )";
#endif
if (knownDevices.isEmpty()) {
kError(kvs::dvi) << "No known devices found" << endl;
return;
}
pageInfo *info = pageList.value(page);
// Generate a PNG-file
// Step 1: Write the PostScriptString to a File
KTemporaryFile PSfile;
PSfile.setAutoRemove(false);
PSfile.setSuffix(".ps");
PSfile.open();
const QString PSfileName = PSfile.fileName();
QTextStream os(&PSfile);
os << "%!PS-Adobe-2.0\n"
<< "%%Creator: kdvi\n"
<< "%%Title: KDVI temporary PostScript\n"
<< "%%Pages: 1\n"
<< "%%PageOrder: Ascend\n"
// HSize and VSize in 1/72 inch
<< "%%BoundingBox: 0 0 "
<< (qint32)(72*(pixel_page_w/resolution)) << ' '
<< (qint32)(72*(pixel_page_h/resolution)) << '\n'
<< "%%EndComments\n"
<< "%!\n"
<< psheader
<< "TeXDict begin "
// HSize in (1/(65781.76*72))inch
<< (qint32)(72*65781*(pixel_page_w/resolution)) << ' '
// VSize in (1/(65781.76*72))inch
<< (qint32)(72*65781*(pixel_page_h/resolution)) << ' '
// Magnification
<< (qint32)(magnification)
// dpi and vdpi
<< " 300 300"
// Name
<< " (test.dvi)"
<< " @start end\n"
<< "TeXDict begin\n"
// Start page
<< "1 0 bop 0 0 a \n";
if (!PostScriptHeaderString->toLatin1().isNull())
os << PostScriptHeaderString->toLatin1();
if (info->background != Qt::white) {
QString colorCommand = QString("gsave %1 %2 %3 setrgbcolor clippath fill grestore\n").
arg(info->background.red()/255.0).
arg(info->background.green()/255.0).
arg(info->background.blue()/255.0);
os << colorCommand.toLatin1();
}
if (!info->PostScriptString->isNull())
os << *(info->PostScriptString);
os << "end\n"
<< "showpage \n";
PSfile.close();
// Step 2: Call GS with the File
QFile::remove(filename.toAscii());
KProcess proc;
proc.setOutputChannelMode(KProcess::SeparateChannels);
QStringList argus;
argus << "gs";
argus << "-dSAFER" << "-dPARANOIDSAFER" << "-dDELAYSAFER" << "-dNOPAUSE" << "-dBATCH";
argus << QString("-sDEVICE=%1").arg(*gsDevice);
argus << QString("-sOutputFile=%1").arg(filename);
argus << QString("-sExtraIncludePath=%1").arg(includePath);
argus << QString("-g%1x%2").arg(pixel_page_w).arg(pixel_page_h); // page size in pixels
argus << QString("-r%1").arg(resolution); // resolution in dpi
argus << "-dTextAlphaBits=4 -dGraphicsAlphaBits=2"; // Antialiasing
argus << "-c" << "<< /PermitFileReading [ ExtraIncludePath ] /PermitFileWriting [] /PermitFileControl [] >> setuserparams .locksafe";
argus << "-f" << PSfileName;
#ifdef DEBUG_PSGS
kDebug(kvs::dvi) << argus.join(" ");
#endif
proc << argus;
int res = proc.execute();
if ( res ) {
// Starting ghostscript did not work.
// TODO: Issue error message, switch PS support off.
kError(kvs::dvi) << "ghostview could not be started" << endl;
}
PSfile.remove();
// Check if gs has indeed produced a file.
if (QFile::exists(filename) == false) {
kError(kvs::dvi) << "GS did not produce output." << endl;
// No. Check is the reason is that the device is not compiled into
// ghostscript. If so, try again with another device.
QString GSoutput;
proc.setReadChannel(QProcess::StandardOutput);
while(proc.canReadLine()) {
GSoutput = QString::fromLocal8Bit(proc.readLine());
if (GSoutput.contains("Unknown device")) {
kDebug(kvs::dvi) << QString("The version of ghostview installed on this computer does not support "
"the '%1' ghostview device driver.").arg(*gsDevice) << endl;
knownDevices.erase(gsDevice);
gsDevice = knownDevices.begin();
if (knownDevices.isEmpty())
// TODO: show a requestor of some sort.
#if 0
KMessageBox::detailedError(0,
i18n("<qt>The version of Ghostview that is installed on this computer does not contain "
"any of the Ghostview device drivers that are known to Okular. PostScript "
"support has therefore been turned off in Okular.</qt>"),
i18n("<qt><p>The Ghostview program, which Okular uses internally to display the "
"PostScript graphics that is included in this DVI file, is generally able to "
"write its output in a variety of formats. The sub-programs that Ghostview uses "
"for these tasks are called 'device drivers'; there is one device driver for "
"each format that Ghostview is able to write. Different versions of Ghostview "
"often have different sets of device drivers available. It seems that the "
"version of Ghostview that is installed on this computer does not contain "
"<strong>any</strong> of the device drivers that are known to Okular.</p>"
"<p>It seems unlikely that a regular installation of Ghostview would not contain "
"these drivers. This error may therefore point to a serious misconfiguration of "
"the Ghostview installation on your computer.</p>"
"<p>If you want to fix the problems with Ghostview, you can use the command "
"<strong>gs --help</strong> to display the list of device drivers contained in "
"Ghostview. Among others, Okular can use the 'png256', 'jpeg' and 'pnm' "
"drivers. Note that Okular needs to be restarted to re-enable PostScript support."
"</p></qt>"));
#else
{}
#endif
else {
kDebug(kvs::dvi) << QString("Okular will now try to use the '%1' device driver.").arg(*gsDevice);
gs_generate_graphics_file(page, filename, magnification);
}
return;
}
