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/***************************************************************************
* Copyright (C) 2007 by John Layt <john@layt.net> *
* *
* FilePrinterPreview based on KPrintPreview (originally LGPL) *
* Copyright (c) 2007 Alex Merry <huntedhacker@tiscali.co.uk> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "fileprinterpreview.h"
#include <QFile>
#include <QSize>
#include <QtCore/QFile>
#include <QtGui/QLabel>
#include <QtGui/QShowEvent>
#include <kmimetypetrader.h>
#include <kparts/part.h>
#include <kpluginfactory.h>
#include <kpluginloader.h>
#include <kpushbutton.h>
#include <kservice.h>
#include <kdebug.h>
using namespace Okular;
// This code copied from KPrintPreview by Alex Merry, adapted to do PS files instead of PDF
class Okular::FilePrinterPreviewPrivate
{
public:
FilePrinterPreviewPrivate( FilePrinterPreview *host, const QString & _filename )
: q(host)
, mainWidget(new QWidget(host))
, previewPart(0)
, failMessage(0)
, config(KSharedConfig::openConfig(QString::fromLatin1("okularrc")))
{
filename = _filename;
}
void getPart();
bool doPreview();
void fail();
FilePrinterPreview *q;
QWidget *mainWidget;
QString filename;
KParts::ReadOnlyPart *previewPart;
QWidget *failMessage;
KSharedConfig::Ptr config;
};
void FilePrinterPreviewPrivate::getPart()
{
if (previewPart) {
kDebug(500) << "already got a part";
return;
}
kDebug(500) << "querying trader for application/ps service";
KPluginFactory *factory(0);
/* Explicitly look for the Okular/Ghostview part: no other PostScript
parts are available now; other parts which handles text are not
suitable here (PostScript source code) */
KService::List offers =
KMimeTypeTrader::self()->query("application/postscript", "KParts/ReadOnlyPart",
"[DesktopEntryName] == 'okularghostview'");
KService::List::ConstIterator it = offers.constBegin();
while (!factory && it != offers.constEnd()) {
KPluginLoader loader(**it);
factory = loader.factory();
if (!factory) {
kDebug(500) << "Loading failed:" << loader.errorString();
}
++it;
}
if (factory) {
kDebug(500) << "Trying to create a part";
previewPart = factory->create<KParts::ReadOnlyPart>(q, (QVariantList() << "Print/Preview"));
if (!previewPart) {
kDebug(500) << "Part creation failed";
}
}
}
bool FilePrinterPreviewPrivate::doPreview()
{
if (!QFile::exists(filename)) {
kWarning() << "Nothing was produced to be previewed";
return false;
}
getPart();
if (!previewPart) {
//TODO: error dialog
kWarning() << "Could not find a PS viewer for the preview dialog";
fail();
return false;
} else {
q->setMainWidget(previewPart->widget());
return previewPart->openUrl(filename);
}
}
void FilePrinterPreviewPrivate::fail()
{
if (!failMessage) {
failMessage = new QLabel(i18n("Could not load print preview part"), q);
}
q->setMainWidget(failMessage);
}
FilePrinterPreview::FilePrinterPreview( const QString &filename, QWidget *parent )
: KDialog( parent )
, d( new FilePrinterPreviewPrivate( this, filename ) )
{
kDebug(500) << "kdeprint: creating preview dialog";
// Set up the dialog
setCaption(i18n("Print Preview"));
setButtons(KDialog::Close);
button(KDialog::Close)->setAutoDefault(false);
restoreDialogSize(d->config->group("Print Preview"));
}
FilePrinterPreview::~FilePrinterPreview()
{
KConfigGroup group(d->config->group("Print Preview"));
saveDialogSize(group);
delete d;
}
QSize FilePrinterPreview::sizeHint() const
{
// return a more or less useful window size, if not saved already
return QSize(600, 500);
}
void FilePrinterPreview::showEvent(QShowEvent *event)
{
if (!event->spontaneous()) {
// being shown for the first time
if (!d->doPreview()) {
event->accept();
return;
}
}
KDialog::showEvent(event);
}
#include "fileprinterpreview.moc"
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