teXjob.h

#ifndef _teXjob_H
#define _teXjob_H

/**  This file is part of comment
*
*  File: teXjob.h
*  Created: 17. 11. 2008
*  Author: Jonathan Verner <jonathan.verner@matfyz.cz>
*  License: GPL v2 or later
*
*  Copyright (C) 2010 Jonathan Verner <jonathan.verner@matfyz.cz>
*
*  This library is free software; you can redistribute it and/or
*  modify it under the terms of the GNU Library General Public
*  License as published by the Free Software Foundation; either
*  version 2 of the License, or (at your option) any later version.
*
*  This library 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
*  Library General Public License for more details.
*
*  You should have received a copy of the GNU Library General Public License
*  along with this library; see the file COPYING.LIB.  If not, write to
*  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
*  Boston, MA 02110-1301, USA.
*/


#include <QtCore/QEventLoop>
#include <QtCore/QTemporaryFile>
#include <QtCore/QProcess>

#include <QtGui/QPixmap>


class compileJob : public QObject { 
  Q_OBJECT
	protected:
		static QString latexPath;
		static QString gsPath;
		static bool checkPaths( QString latex, QString gs );
		static bool paths_ok;

		static QString texName2Pdf( QString fname );

		QTemporaryFile *tmpSRC;
		QString pdfFName;
		void removeTempFiles();
		QRectF parseGSOutput();


		QProcess *proc;
		bool jobStarted;

	protected slots:

		void texJobFinished(int,QProcess::ExitStatus);
		void gsJobFinished(int,QProcess::ExitStatus);



	public:
		compileJob();
		~compileJob();

		static void setPaths( QString latex, QString gs );
		static bool pathsOK();

		void start( QString latexSource );
		void restart( QString latexSource );
		void kill();
		bool running();
	signals:
		void finished( QString resultPath, QRectF bBox, bool status );
};

namespace Poppler { 
  class Document;
}

class renderItem : public QObject { 
  Q_OBJECT
	private:
		QString pre,src;
		QString pdfFileName;
		QRectF bBox;
		Poppler::Document *pdf;
		int job_id;
		compileJob job;
		bool ready;
		
		
		QEventLoop *localLoop;
		bool waiting_for_job;
		void wait_for_job();

	private slots:
		void pdfReady( QString pdfFName, QRectF bBox, bool status );

	protected:
		static QString getLaTeX( QString source, QString preambule, int sizeHint );

	public:
		renderItem( QString source, QString preambule );
		~renderItem();
		void updateItem( QString source, QString preambule, int jobID = 0, bool format_inline = false, int sizeHint = 50 );
		int size();
		QPixmap render( qreal zoom, bool format_inline, int sizeHint );
		void preRender( int jobID, bool format_inline, int sizeHint );
		QString getPDFFileName() const { return pdfFileName; };
		QRectF getBBox() const { return bBox; };

	signals:
		void renderingReady( int jobID );
};


#endif /* _teXjob_H */