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tikzpreviewgenerator.h

/***************************************************************************
 *   Copyright (C) 2007 by Florian Hackenberger                            *
 *     <florian@hackenberger.at>                                           *
 *   Copyright (C) 2007, 2008, 2009, 2010 by Glad Deschrijver              *
 *     <glad.deschrijver@gmail.com>                                        *
 *                                                                         *
 *   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, see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/

#ifndef KTIKZ_TIKZPREVIEWGENERATOR_H
#define KTIKZ_TIKZPREVIEWGENERATOR_H

#include <QMutex>
#if QT_VERSION >= 0x040600
#include <QProcessEnvironment>
#else
#include <QStringList>
#endif
#include <QThread>
#include <QTime>
#include <QWaitCondition>

class QPixmap;
class QProcess;
class QPlainTextEdit;
class QTextStream;

namespace Poppler
{
      class Document;
}

class TikzPreviewController;

/**
 * @author Florian Hackenberger <florian@hackenberger.at>
 */
00049 class TikzPreviewGenerator : public QThread
{
      Q_OBJECT

public:
      TikzPreviewGenerator(TikzPreviewController *parent);
      ~TikzPreviewGenerator();

      void setTikzFileBaseName(const QString &name);
      void setLatexCommand(const QString &command);
      void setPdftopsCommand(const QString &command);
      void setShellEscaping(bool useShellEscaping);
      QString getLogText() const;
      bool hasRunFailed();
      void generatePreview(bool templateChanged = false);
      void addToLatexSearchPath(const QString &path);
      bool generateEpsFile();

public slots:
      void setTemplateFile(const QString &fileName);
      void setReplaceText(const QString &replace);
      void abortProcess();
      void regeneratePreview();

signals:
      void pixmapUpdated(Poppler::Document *tikzPdfDoc);
      void setExportActionsEnabled(bool enabled);
      void showErrorMessage(const QString &message);
      void shortLogUpdated(const QString &logText, bool runFailed);
//    void logUpdated(bool runFailed);
      void processRunning(bool isRunning);

private slots:
      void displayGnuplotNotExecutable();

protected:
      void setMinUpdateInterval(const QTime &interval);
      QString getParsedLogText(QTextStream *logStream) const;
      void parseLogFile();
      void createPreview();
      void run();
      void createTempLatexFile();
      void createTempTikzFile();
      bool runProcess(const QString &name, const QString &command, const QStringList &arguments, const QString &workingDir = 0);
      bool generatePdfFile();

      TikzPreviewController *m_parent;
      Poppler::Document *m_tikzPdfDoc;
      QString m_tikzCode;

      QProcess *m_process;
      mutable QMutex m_memberLock;
      bool m_updateScheduled;
      QWaitCondition m_updateRequested;
      QTime m_minUpdateInterval;
      QTime m_updateTimer;
      bool m_processAborted;
      bool m_runFailed;
      bool m_keepRunning;
#if QT_VERSION >= 0x040600
      QProcessEnvironment m_processEnvironment;
#else
      QStringList m_processEnvironment;
#endif

      QString m_tikzFileBaseName;
      QString m_templateFileName;
      QString m_tikzReplaceText;
//    int m_templateStartLineNumber;
      bool m_templateChanged;

      QString m_latexCommand;
      QString m_pdftopsCommand;
      QString m_shortLogText;
      QString m_logText;
      bool m_useShellEscaping;

      QProcess *m_checkGnuplotExecutable;
};

#endif

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