File indexing completed on 2024-04-28 11:20:59

 /*
     SPDX-License-Identifier: GPL-2.0-or-later
     SPDX-FileCopyrightText: 2019 Sirgienko Nikita <warquark@gmail.com>
 */
 #ifndef MATHRENDER_H
 #define MATHRENDER_H
 
 #include <QObject>
 #include <QTextImageFormat>
 #include <QMutex>
 
 #include "lib/latexrenderer.h"
 
 /**
  * Special class for rendering embedded math in MarkdownEntry and TextEntry
  * Instead of LatexRenderer+EpsRenderer provide all needed functianality in one class
  * Even if we add some speed optimization in future, API of the class probably won't change
  */
 class MathRenderer : public QObject {
   Q_OBJECT
   public:
 
     MathRenderer();
     ~MathRenderer();
 
     static bool mathRenderAvailable();
 
     // Resulution contol
     void setScale(qreal scale);
     qreal scale();
     void useHighResolution(bool b);
 
     /**
      * This function will run render task in Qt thread pool and
      * call resultHandler SLOT with MathRenderResult* argument on finish
      * receiver will be managed about pointer, task only create it
      */
     void renderExpression(
         int jobId,
         const QString& mathExpression,
         Cantor::LatexRenderer::EquationType type,
         const QObject *receiver,
         const char *resultHandler);
 
 
     /**
      * Rerender renderer math expression in document
      * Unlike MathRender::renderExpression this method isn't async, because
      * rerender already rendered math is not long operation
      */
     void rerender(QTextDocument* document, const QTextImageFormat& math);
 
     /**
      * Render math expression from existing .pdf
      * Like MathRenderer::rerender is blocking
      */
     std::pair<QTextImageFormat, QImage> renderExpressionFromPdf(
         const QString& filename, const QString& uuid, const QString& code, Cantor::LatexRenderer::EquationType type, bool* success
     );
 
   private:
     double m_scale;
     bool m_useHighRes;
 };
 
 #endif /* MATHRENDER_H */