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* Add initial printing support with QtWebEngine >= 5.7.0 This works by printing to PDF first, then sending the PDF to a printer if printing to a physical printer was requested. On *nix (including Mac OS X), we use the lpr command, which is typically provided by CUPS nowadays. Currently, no options beyond the printer name are passed, there is room for improvement there. (Okular has a FilePrinter class that handles this in a more sophisticated way.) On Windows, we use ShellExecuteW with the "printto" verb. In that case, the printer name is unfortunately the only thing that can be passed. The user experience may also be suboptimal depending on the PDF viewer installed on the system. (E.g., Adobe Reader is reported to ignore SW_HIDE.) And if there is no PDF viewer installed at all, it will of course not work at all. But it is the best we can do without bundling something like GhostScript (or requiring the user to install it). * Printing: Let lpr autoremove the temporary file instead of QTemporaryFile Only lpr knows for sure when it is safe to delete the temporary file. * Printing: Use the callback version of printToPdf instead of the file one The file version is also asynchronous and does not report when it is done. * Printing: Use async QProcess API instead of QProcess::execute to run lpr This also required making tempFile a QTemporaryFile * instead of a QTemporaryFile on the stack, because QTemporaryFile is a QObject and cannot be copied. * Printing: Adapt the FilePrinter from Okular to pass correct lpr args The license of those files is GPLv2+, which is compatible with QupZilla's GPLv3+ licensing.
103 lines
4.4 KiB
C++
103 lines
4.4 KiB
C++
/***************************************************************************
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* Copyright (C) 2007, 2010 by John Layt <john@layt.net> *
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* *
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* Adaptations for QupZilla *
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* Copyright (C) 2016 by Kevin Kofler <kevin.kofler@chello.at> *
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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 FILEPRINTER_H
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#define FILEPRINTER_H
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#include <QtCore/QList>
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#include <QtCore/QString>
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#include <QtPrintSupport/QPrinter>
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#include "qzcommon.h"
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class QSize;
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namespace Qz {
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class QUPZILLA_EXPORT FilePrinter
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{
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public:
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/** Whether file(s) get deleted by the application or by the print system.
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*
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* You may need to chose system deletion if your temp file clean-up
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* deletes the file before the print system is finished with it.
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*/
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enum FileDeletePolicy { ApplicationDeletesFiles, SystemDeletesFiles };
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/** Whether pages to be printed are selected by the application or the print system.
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*
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* If application side, then the generated file will only contain those pages
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* selected by the user, so FilePrinter will print all the pages in the file.
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*
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* If system side, then the file will contain all the pages in the document, and
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* the print system will print the users selected print range from out of the file.
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*
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* Note system side only works in CUPS, not LPR.
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*/
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enum PageSelectPolicy { ApplicationSelectsPages, SystemSelectsPages };
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/** Print a file using the settings in QPrinter
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*
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* Only supports CUPS and LPR on *NIX. Page Range only supported in CUPS.
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* Most settings unsupported by LPR, some settings unsupported by CUPS.
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*
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* @param printer the print settings to use
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* @param file the file to print
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* @param fileDeletePolicy if the application or system deletes the file
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* @param pageSelectPolicy if the application or system selects the pages to print
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* @param pageRange page range to print if SystemSelectsPages and user chooses Selection in Print Dialog
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*/
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static void printFile( QPrinter *printer, const QString &file,
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FileDeletePolicy fileDeletePolicy = FilePrinter::ApplicationDeletesFiles,
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PageSelectPolicy pageSelectPolicy = FilePrinter::ApplicationSelectsPages,
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const QString &pageRange = QString() );
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/** Return if CUPS Print System is available on this system
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*
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* @returns Returns true if CUPS available
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*/
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static bool cupsAvailable();
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protected:
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void doPrintFile( QPrinter &printer, const QString &file,
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FileDeletePolicy fileDeletePolicy, PageSelectPolicy pageSelectPolicy,
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const QString &pageRange );
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QStringList printArguments( QPrinter &printer,
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FileDeletePolicy fileDeletePolicy, PageSelectPolicy pageSelectPolicy,
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bool useCupsOptions, const QString &pageRange, const QString &version );
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QStringList destination( QPrinter &printer, const QString &version );
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QStringList copies( QPrinter &printer, const QString &version );
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QStringList jobname( QPrinter &printer, const QString &version );
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QStringList deleteFile( QPrinter &printer, FileDeletePolicy fileDeletePolicy,
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const QString &version );
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QStringList pages( QPrinter &printer, PageSelectPolicy pageSelectPolicy,
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const QString &pageRange, bool useCupsOptions, const QString &version );
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QStringList cupsOptions( QPrinter &printer );
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QStringList optionMedia( QPrinter &printer );
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QString mediaPageSize( QPrinter &printer );
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QString mediaPaperSource( QPrinter &printer );
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QStringList optionDoubleSidedPrinting( QPrinter &printer );
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QStringList optionPageOrder( QPrinter &printer );
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QStringList optionCollateCopies( QPrinter &printer );
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QStringList optionCupsProperties( QPrinter &printer );
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};
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}
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#endif // FILEPRINTER_H
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