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136 lines
4 KiB
C++
136 lines
4 KiB
C++
// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*-
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/**
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* \file dviexport.h
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* Distributed under the GNU GPL version 2 or (at your option)
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* any later version. See accompanying file COPYING or copy at
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* http://www.gnu.org/copyleft/gpl.html
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*
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* \author Angus Leeming
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* \author Stefan Kebekus
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*
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* Classes DVIExportToPDF and DVIExportToPS control the export
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* of a DVI file to PDF or PostScript format, respectively.
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* Common functionality is factored out into a common base class,
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* DVIExport which itself derives from KShared allowing easy,
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* polymorphic storage of multiple KSharedPtr<DVIExport> variables
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* in a container of all exported processes.
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*/
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#ifndef DVIEXPORT_H
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#define DVIEXPORT_H
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#include <ksharedptr.h>
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#include <QObject>
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#include <QtGui/QPrinter>
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class dviRenderer;
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class KProcess;
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#include <QStringList>
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class DVIExport: public QObject, public QSharedData
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{
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Q_OBJECT
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public:
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virtual ~DVIExport();
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/** @c started() Flags whether or not the external process was
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* spawned successfully.
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* Can be used to decide whether to discard the DVIExport variable,
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* or to store it and await notification that the external process
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* has finished.
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*/
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bool started() const { return started_; }
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Q_SIGNALS:
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void error( const QString &message, int duration );
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protected:
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/** @param parent is stored internally in order to inform the parent
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* that the external process has finished and that this variable
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* can be removed from any stores.
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*/
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DVIExport(dviRenderer& parent);
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/** Spawns the external process having connected slots to the child
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* process's stdin and stdout streams.
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*/
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void start(const QString& command,
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const QStringList& args,
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const QString& working_directory,
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const QString& error_message);
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/** The real implementation of the abort_process() slot that is
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* called when the fontProcessDialog is closed by the user,
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* indicating that the export should be halted.
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*/
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virtual void abort_process_impl();
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/** The real implementation of the finished() slot that is called
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* when the external process finishes.
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* @param exit_code the exit code retuned by the external process.
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*/
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virtual void finished_impl(int exit_code);
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private slots:
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/// Calls an impl() inline so that derived classes don't need slots.
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void abort_process() { abort_process_impl(); }
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void finished(int exit_code) { finished_impl(exit_code); }
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/** This slot receives all output from the child process's stdin
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* and stdout streams.
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*/
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void output_receiver();
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private:
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QString error_message_;
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bool started_;
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KProcess* process_;
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dviRenderer* parent_;
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};
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class DVIExportToPDF : public DVIExport
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{
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public:
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/** @param parent is stored internally in order to inform the parent
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* that the external process has finished.
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* @param output_name is the name of the PDF file that is
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* to contain the exported data. */
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DVIExportToPDF(dviRenderer& parent, const QString& output_name);
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};
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class DVIExportToPS : public DVIExport
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{
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public:
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/** @param parent is stored internally in order to inform the parent
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* that the external process has finished.
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* @param output_name is the name of the PostScript file that is
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* to contain the exported data.
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* @param options extra command line arguments that are to be
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* passed to the external process's argv command line.
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* @param printer having generated the PostScript file, it is passed
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* to @c printer (if not null).
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* @param orientation the original orientation of the document
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*/
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DVIExportToPS(dviRenderer& parent,
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const QString& output_name,
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const QStringList& options,
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QPrinter* printer,
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bool useFontHinting,
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QPrinter::Orientation orientation = QPrinter::Portrait);
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private:
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virtual void abort_process_impl();
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virtual void finished_impl(int exit_code);
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QPrinter* printer_;
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QString output_name_;
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QString tmpfile_name_;
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QPrinter::Orientation orientation_;
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};
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#endif
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