mirror of
https://invent.kde.org/graphics/okular
synced 2024-07-17 02:37:04 +00:00
147 lines
3.9 KiB
C++
147 lines
3.9 KiB
C++
/***************************************************************************
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* Copyright (C) 2007 by John Layt <john@layt.net> *
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* *
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* FilePrinterPreview based on KPrintPreview (originally LGPL) *
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* Copyright (c) 2007 Alex Merry <huntedhacker@tiscali.co.uk> *
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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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#include "fileprinterpreview.h"
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#include <QFile>
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#include <QSize>
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#include <QtCore/QFile>
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#include <QtGui/QLabel>
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#include <QtGui/QShowEvent>
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#include <kmimetypetrader.h>
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#include <kparts/part.h>
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#include <kpluginfactory.h>
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#include <kpluginloader.h>
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#include <kservice.h>
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#include <kdebug.h>
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using namespace Okular;
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// This code copied from KPrintPreview by Alex Merry, adapted to do PS files instead of PDF
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class Okular::FilePrinterPreviewPrivate
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{
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public:
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FilePrinterPreviewPrivate( FilePrinterPreview *host, const QString & _filename )
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: q(host)
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, mainWidget(new QWidget(host))
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, previewPart(0)
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, failMessage(0)
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{
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filename = _filename;
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}
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void getPart();
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bool doPreview();
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void fail();
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FilePrinterPreview *q;
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QWidget *mainWidget;
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QString filename;
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KParts::ReadOnlyPart *previewPart;
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QWidget *failMessage;
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};
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void FilePrinterPreviewPrivate::getPart()
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{
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if (previewPart) {
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kDebug(500) << "already got a part";
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return;
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}
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kDebug(500) << "querying trader for application/ps service";
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KPluginFactory *factory(0);
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KService::List offers =
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KMimeTypeTrader::self()->query("application/postscript", "KParts/ReadOnlyPart");
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KService::List::ConstIterator it = offers.begin();
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while (!factory && it != offers.end()) {
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KPluginLoader loader(**it);
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factory = loader.factory();
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if (!factory) {
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kDebug(500) << "Loading failed:" << loader.errorString();
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}
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++it;
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}
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if (factory) {
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kDebug(500) << "Trying to create a part";
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previewPart = factory->create<KParts::ReadOnlyPart>(q, (QVariantList() << "Print/Preview"));
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if (!previewPart) {
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kDebug(500) << "Part creation failed";
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}
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}
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}
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bool FilePrinterPreviewPrivate::doPreview()
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{
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if (!QFile::exists(filename)) {
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kWarning() << "Nothing was produced to be previewed";
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return false;
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}
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getPart();
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if (!previewPart) {
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//TODO: error dialog
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kWarning() << "Could not find a PS viewer for the preview dialog";
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fail();
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return false;
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} else {
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q->setMainWidget(previewPart->widget());
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return previewPart->openUrl(filename);
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}
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}
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void FilePrinterPreviewPrivate::fail()
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{
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if (!failMessage) {
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failMessage = new QLabel(i18n("Could not load print preview part"), q);
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}
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q->setMainWidget(failMessage);
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}
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FilePrinterPreview::FilePrinterPreview( const QString &filename, QWidget *parent )
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: KDialog( parent )
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, d( new FilePrinterPreviewPrivate( this, filename ) )
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{
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kDebug(500) << "kdeprint: creating preview dialog";
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// Set up the dialog
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setCaption(i18n("Print Preview"));
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setButtons(KDialog::Close);
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}
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FilePrinterPreview::~FilePrinterPreview()
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{
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delete d;
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}
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void FilePrinterPreview::showEvent(QShowEvent *event)
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{
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if (!event->spontaneous()) {
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// being shown for the first time
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if (!d->doPreview()) {
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event->accept();
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return;
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}
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}
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KDialog::showEvent(event);
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}
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#include "fileprinterpreview.moc"
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