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Diffstat (limited to 'src/gui/latexprocess.cpp')
| -rw-r--r-- | src/gui/latexprocess.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/gui/latexprocess.cpp b/src/gui/latexprocess.cpp new file mode 100644 index 0000000..59db9ea --- /dev/null +++ b/src/gui/latexprocess.cpp @@ -0,0 +1,169 @@ +/* + TikZiT - a GUI diagram editor for TikZ + Copyright (C) 2018 Aleks Kissinger + + 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 3 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, see <https://www.gnu.org/licenses/>. +*/ + +#include "latexprocess.h" +#include "tikzit.h" + +#include <QDebug> +#include <QStandardPaths> +#include <QTemporaryDir> +#include <QStringList> +#include <QSettings> + +LatexProcess::LatexProcess(PreviewWindow *preview, QObject *parent) : QObject(parent) +{ + _preview = preview; + _output = preview->outputTextEdit(); + + _proc = new QProcess(this); + _proc->setProcessChannelMode(QProcess::MergedChannels); + _proc->setWorkingDirectory(_workingDir.path()); + + connect(_proc, SIGNAL(readyReadStandardOutput()), this, SLOT(readyReadStandardOutput())); + connect(_proc, SIGNAL(finished(int)), this, SLOT(finished(int))); + + // for debug purposes + //_workingDir.setAutoRemove(false); +} + +void LatexProcess::makePreview(QString tikz) +{ + QSettings settings("tikzit", "tikzit"); + _preview->setStatus(PreviewWindow::Running); + _output->clear(); + + if (!_workingDir.isValid()) { + _output->appendPlainText("COULD NOT WRITE TO TEMP DIR: " + _workingDir.path() + "\n"); + return; + } + + _output->appendPlainText("USING TEMP DIR: " + _workingDir.path() + "\n"); + + QString pdflatex; + + if (settings.value("auto-detect-pdflatex", true).toBool()) { + _output->appendPlainText("SEARCHING FOR pdflatex IN:"); + _output->appendPlainText(qgetenv("PATH")); + _output->appendPlainText("\n"); + pdflatex = QStandardPaths::findExecutable("pdflatex"); + if (pdflatex.isEmpty()) { + // if pdflatex is not in PATH, we are probably on mac or windows, so try common + // install directories. + _output->appendPlainText("NOT FOUND IN PATH, TRYING:"); + + QStringList texDirs; + // common macOS tex directories: + texDirs << "/Library/TeX/texbin"; + texDirs << "/usr/texbin"; + texDirs << "/usr/local/bin"; + texDirs << "/sw/bin"; + + // common windows tex directories + texDirs << "C:\\Program Files\\MiKTeX 2.9\\miktex\\bin"; + texDirs << "C:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64"; + texDirs << "C:\\Program Files\\MiKTeX 2.8\\miktex\\bin"; + texDirs << "C:\\Program Files\\MiKTeX 2.8\\miktex\\bin\\x64"; + texDirs << "C:\\Program Files\\MiKTeX 2.7\\miktex\\bin"; + texDirs << "C:\\Program Files\\MiKTeX 2.7\\miktex\\bin\\x64"; + + _output->appendPlainText(texDirs.join(":")); + pdflatex = QStandardPaths::findExecutable("pdflatex", texDirs); + } + + if (pdflatex.isEmpty()) { + _output->appendPlainText("pdflatex NOT FOUND, ABORTING.\n"); + _preview->setStatus(PreviewWindow::Failed); + return; + } else { + _output->appendPlainText("FOUND: " + pdflatex + "\n"); + } + } else { + _output->appendPlainText("USING pdflatex:\n"); + pdflatex = settings.value("pdflatex-path", "/usr/bin/pdflatex").toString(); + _output->appendPlainText(pdflatex + "\n"); + } + + // copy tikzit.sty to preview dir + QFile::copy(":/tex/sample/tikzit.sty", _workingDir.path() + "/tikzit.sty"); + + // write out the file containing the tikz picture + QFile f(_workingDir.path() + "/preview.tex"); + f.open(QIODevice::WriteOnly); + QTextStream tex(&f); + tex << "\\documentclass{article}\n"; + tex << "\\usepackage{tikzit}\n"; + tex << "\\tikzstyle{every picture}=[tikzfig]\n"; + tex << "\\usepackage[graphics,active,tightpage]{preview}\n"; + tex << "\\PreviewEnvironment{tikzpicture}\n"; + + // copy active *.tikzstyles file to preview dir + if (!tikzit->styleFile().isEmpty() && QFile::exists(tikzit->styleFilePath())) { + QFile::copy(tikzit->styleFilePath(), _workingDir.path() + "/" + tikzit->styleFile()); + tex << "\\input{" + tikzit->styleFile() + "}\n"; + + // if there is a *.tikzdefs file with the same basename, copy and include it as well + QFileInfo fi(tikzit->styleFilePath()); + QString defFile = fi.baseName() + ".tikzdefs"; + QString defFilePath = fi.absolutePath() + "/" + defFile; + if (QFile::exists(defFilePath)) { + QFile::copy(defFilePath, _workingDir.path() + "/" + defFile); + tex << "\\input{" + defFile + "}\n"; + } + } + + tex << "\\begin{document}\n\n"; + tex << tikz; + tex << "\n\n\\end{document}\n"; + + f.close(); + _proc->start(pdflatex, + QStringList() + << "-interaction=nonstopmode" + << "-halt-on-error" + << "preview.tex"); + +} + +void LatexProcess::kill() +{ + if (_proc->state() == QProcess::Running) _proc->kill(); +} + +void LatexProcess::readyReadStandardOutput() +{ + QByteArray s = _proc->readAllStandardOutput(); + _output->appendPlainText(s); +} + +void LatexProcess::finished(int exitCode) +{ + QByteArray s = _proc->readAllStandardOutput(); + _output->appendPlainText(s); + + if (exitCode == 0) { + QString pdf = _workingDir.path() + "/preview.pdf"; + _output->appendPlainText("\n\nSUCCESSFULLY GENERATED: " + pdf + "\n"); + _preview->setPdf(pdf); + _preview->setStatus(PreviewWindow::Success); + emit previewFinished(); + } else { + _output->appendPlainText("\n\npdflatex RETURNED AN ERROR\n"); + _preview->setStatus(PreviewWindow::Failed); + emit previewFinished(); + } +} |