File indexing completed on 2024-04-28 16:26:32

 /*****************************************************************************
 *   Copyright (C) 2006 by Mathias Soeken (msoeken@informatik.uni-bremen.de)  *
 *             (C) 2011 by Michel Ludwig (michel.ludwig@kdemail.net)          *
 ******************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   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.                                   *
  *                                                                         *
  ***************************************************************************/
 
 #ifndef PREVIEWWIDGET_H
 #define PREVIEWWIDGET_H
 
 #include <QScrollArea>
 
 class QImage;
 class QLabel;
 
 class KileInfo;
 
 namespace KileTool {
 class Base;
 }
 
 namespace KileWidget
 {
 
 // declared in the .cpp file
 class ImageDisplayWidget;
 
 /**
  * Widget which can display PNG images from Math LaTeX
  * Code
  *
  * This is used to be inserted in the bottom bar of the kile
  * main widget. When putting the cursor in a mathgroup, the LaTeX
  * source should be extracted and rendered in this widget.
  *
  * This widget uses one new Tool: DVItoPNG which converts
  * a dvi file to an png image, which is fitted to the size
  * of the formula).
  *
  * You could use this widget to implement a formula editor in Kile,
  * where the editor is the editor, but with this widget you can see
  * the result in a appropriate size just in time.
  *
  * @author Mathias Soeken <msoeken@informatik.uni-bremen.de>
  */
 
 class PreviewWidget : public QScrollArea
 {
     Q_OBJECT
 
 public:
     explicit PreviewWidget(KileInfo *info, QWidget *parent = 0, const char *name = 0);
     ~PreviewWidget();
 
     /**
      * Tries to paint the current mathgroup of
      * the current document.
      *
      * If a document is open and the cursor is
      * inside a mathgroup, a PNG is generated
      * containing this mathgroup.
      *
      *  This PNG image is then displayed on the
      * widget.
      **/
     void showActivePreview(const QString &text, const QString &textfilename, int startrow, int previewtype);
 
 public Q_SLOTS:
     void clear();
 
 private:
     enum { pwDvipng=0, pwDvipsConvert, pwConvert };
 
     KileInfo *m_info;
     ImageDisplayWidget *m_imageDisplayWidget;
     bool m_running;
     QString m_conversionTool;
 
 protected:
     void showError(const QString &text);
 
 public Q_SLOTS:
     /**
      * Notify, if the DVItoPNG tool is done.
      *
      * Because the tool runs async. we
      * must wait, if the process is done.
      *
      * Then we try to generate a image of the
      * temporary PNG filename and display it on
      * the widget.
      *
      * The size of the widget is also adjusted
      * to the size of the widget.
      **/
     void drawImage();
     void toolDestroyed();
 };
 
 }
 
 #endif