mirror of
https://invent.kde.org/graphics/okular
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6068c76df6
svn path=/trunk/playground/graphics/okular/; revision=628853
150 lines
5 KiB
C++
150 lines
5 KiB
C++
/***************************************************************************
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* Copyright (C) 2007 by Tobias Koenig <tokoe@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#ifndef _OKULAR_TEXTDOCUMENTGENERATOR_H_
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#define _OKULAR_TEXTDOCUMENTGENERATOR_H_
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#include <okular/core/okular_export.h>
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#include <okular/core/document.h>
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#include <okular/core/generator.h>
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class QTextBlock;
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class QTextDocument;
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namespace Okular {
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class TextDocumentGenerator;
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class OKULAR_EXPORT TextDocumentConverter : public QObject
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{
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Q_OBJECT
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public:
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/**
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* Creates a new generic converter.
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*/
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TextDocumentConverter();
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/**
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* Destroys the generic converter.
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*/
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~TextDocumentConverter();
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/**
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* Returns the generated QTextDocument object.
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*/
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virtual QTextDocument *convert( const QString &fileName ) = 0;
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Q_SIGNALS:
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/**
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* Adds a new link object which is located between cursorBegin and
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* cursorEnd to the generator.
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*/
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void addLink( Link *link, int cursorBegin, int cursorEnd );
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/**
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* Adds a new annotation object which is located between cursorBegin and
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* cursorEnd to the generator.
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*/
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void addAnnotation( Annotation *annotation, int cursorBegin, int cursorEnd );
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/**
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* Adds a new title at the given level which is located as position to the generator.
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*/
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void addTitle( int level, const QString &title, const QTextBlock &position );
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/**
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* Adds a set of meta data to the generator.
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*/
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void addMetaData( const QString &key, const QString &value, const QString &title );
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/**
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* This signal should be emitted whenever an error occurred in the converter.
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*
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* @param message The message which should be shown to the user.
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* @param duration The time that the message should be shown to the user.
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*/
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void error( const QString &message, int duration );
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/**
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* This signal should be emitted whenever the user should be warned.
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*
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* @param message The message which should be shown to the user.
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* @param duration The time that the message should be shown to the user.
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*/
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void warning( const QString &message, int duration );
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/**
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* This signal should be emitted whenever the user should be noticed.
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*
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* @param message The message which should be shown to the user.
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* @param duration The time that the message should be shown to the user.
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*/
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void notice( const QString &message, int duration );
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protected:
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/**
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* This method can be used to calculate the viewport for a given text block.
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*
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* Note: This method should be called at the end of the convertion, because it
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* triggers QTextDocument to do the layout calculation.
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*/
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DocumentViewport calculateViewport( QTextDocument *document, const QTextBlock &block );
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private:
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class Private;
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Private* const d;
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};
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class OKULAR_EXPORT TextDocumentGenerator : public Generator
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{
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friend class TextDocumentConverter;
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Q_OBJECT
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public:
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TextDocumentGenerator( TextDocumentConverter *converter );
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virtual ~TextDocumentGenerator();
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// [INHERITED] load a document and fill up the pagesVector
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bool loadDocument( const QString & fileName, QVector<Okular::Page*> & pagesVector );
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bool closeDocument();
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// [INHERITED] perform actions on document / pages
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bool canGeneratePixmap() const;
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void generatePixmap( Okular::PixmapRequest * request );
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// [INHERITED] print document using already configured kprinter
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bool print( KPrinter& printer );
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// [INHERITED] text exporting
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Okular::ExportFormat::List exportFormats() const;
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bool exportTo( const QString &fileName, const Okular::ExportFormat &format );
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const Okular::DocumentInfo* generateDocumentInfo();
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const Okular::DocumentSynopsis* generateDocumentSynopsis();
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protected:
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Okular::TextPage* textPage( Okular::Page *page );
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private:
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class Private;
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Private* const d;
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Q_PRIVATE_SLOT( d, void addLink( Link*, int, int ) )
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Q_PRIVATE_SLOT( d, void addAnnotation( Annotation*, int, int ) )
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Q_PRIVATE_SLOT( d, void addTitle( int, const QString&, const QTextBlock& ) )
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Q_PRIVATE_SLOT( d, void addMetaData( const QString&, const QString&, const QString& ) )
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};
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}
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#endif
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