Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 325 insertions, 0 deletions

diff --git a/kdeprint/kprintpreview.cpp b/kdeprint/kprintpreview.cpp
new file mode 100644
index 000000000..6118f19b8
--- /dev/null
+++ b/kdeprint/kprintpreview.cpp
@@ -0,0 +1,325 @@
+/*
+ *  This file is part of the KDE libraries
+ *  Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be>
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License version 2 as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ **/
+
+#include "kprintpreview.h"
+#include "kmfactory.h"
+
+#include <qfile.h>
+#include <qlayout.h>
+#include <qvbox.h>
+
+#include <kparts/part.h>
+#include <kaccel.h>
+#include <kaction.h>
+#include <klibloader.h>
+#include <ktrader.h>
+#include <kuserprofile.h>
+#include <krun.h>
+#include <kapplication.h>
+#include <kstandarddirs.h>
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <kdebug.h>
+#include <kconfig.h>
+#include <ktoolbar.h>
+#include <kmimetype.h>
+
+KPreviewProc::KPreviewProc()
+: KProcess()
+{
+	m_bOk = false;
+	connect(this, SIGNAL(processExited(KProcess*)), SLOT(slotProcessExited(KProcess*)));
+}
+
+KPreviewProc::~KPreviewProc()
+{
+}
+
+bool KPreviewProc::startPreview()
+{
+	if (start())
+	{
+		kapp->enter_loop();
+		return m_bOk;
+	}
+	else
+		return false;
+}
+
+void KPreviewProc::slotProcessExited(KProcess* proc)
+{
+	kapp->exit_loop();
+	if ( proc->normalExit() && proc->exitStatus() == 0 )
+		m_bOk = true;
+	else
+		kdDebug(500) << "KPreviewProc::slotProcessExited: normalExit=" << proc->normalExit()
+			<< " exitStatus=" << proc->exitStatus() << endl;
+}
+
+//*******************************************************************************************
+
+class KPrintPreview::KPrintPreviewPrivate
+{
+public:
+	KPrintPreviewPrivate(KPrintPreview *dlg) : gvpart_(0)
+	{
+		mainwidget_ = new QWidget(dlg, "MainWidget");
+		toolbar_ = new KToolBar(mainwidget_, "PreviewToolBar", true);
+		actions_ = new KActionCollection(dlg);
+		accel_ = new KAccel(dlg);
+		previewonly_ = false;
+	}
+	~KPrintPreviewPrivate()
+	{
+		if (gvpart_) delete gvpart_;
+	}
+	void plugAction(KAction *act)
+	{
+		act->plug(toolbar_);
+		act->plugAccel(accel_);
+	}
+
+	KParts::ReadOnlyPart	*gvpart_;
+	KToolBar		*toolbar_;
+	KActionCollection	*actions_;
+	QWidget			*mainwidget_;
+	KAccel			*accel_;
+	bool			previewonly_;
+};
+
+static KLibFactory* componentFactory()
+{
+	kdDebug(500) << "kdeprint: querying trader for 'application/postscript' service" << endl;
+	KLibFactory	*factory(0);
+	KTrader::OfferList	offers = KTrader::self()->query(QString::fromLatin1("application/postscript"), QString::fromLatin1("KParts/ReadOnlyPart"), QString::null, QString::null);
+	for (KTrader::OfferList::ConstIterator it = offers.begin(); it != offers.end(); ++it)
+	{
+		KService::Ptr	service = *it;
+		factory = KLibLoader::self()->factory(QFile::encodeName(service->library()));
+		if (factory)
+			break;
+	}
+	if (!factory)
+	{
+		// nothing has been found, try to load directly the KGhostview part
+		factory = KLibLoader::self()->factory("libkghostviewpart");
+	}
+	return factory;
+}
+
+static bool continuePrint(const QString& msg_, QWidget *parent, bool previewOnly)
+{
+	QString	msg(msg_);
+	if (previewOnly)
+	{
+		KMessageBox::error(parent, msg);
+		return false;
+	}
+	else
+	{
+		msg.append(" ").append(i18n("Do you want to continue printing anyway?"));
+		return (KMessageBox::warningContinueCancel(parent, msg, QString::null, KGuiItem(i18n("Print"),"fileprint")) == KMessageBox::Continue);
+	}
+}
+
+//*******************************************************************************************
+
+KPrintPreview::KPrintPreview(QWidget *parent, bool previewOnly)
+: KDialogBase(parent, "PreviewDlg", true, i18n("Print Preview"), 0)
+{
+	kdDebug(500) << "kdeprint: creating preview dialog" << endl;
+	d = new KPrintPreviewPrivate(this);
+	d->previewonly_ = previewOnly;
+
+	// create main view and actions
+	setMainWidget(d->mainwidget_);
+	if (previewOnly)
+		KStdAction::close(this, SLOT(reject()), d->actions_, "close_print");
+	else
+	{
+		new KAction(i18n("Print"), "fileprint", Qt::Key_Return, this, SLOT(accept()), d->actions_, "continue_print");
+		new KAction(i18n("Cancel"), "stop", Qt::Key_Escape, this, SLOT(reject()), d->actions_, "stop_print");
+	}
+
+}
+
+KPrintPreview::~KPrintPreview()
+{
+	delete d;
+}
+
+void KPrintPreview::initView(KLibFactory *factory)
+{
+	// load the component
+	d->gvpart_ = (KParts::ReadOnlyPart*)factory->create(d->mainwidget_, "gvpart", "KParts::ReadOnlyPart");
+
+	// populate the toolbar
+	if (d->previewonly_)
+		d->plugAction(d->actions_->action("close_print"));
+	else
+	{
+		d->plugAction(d->actions_->action("continue_print"));
+		d->plugAction(d->actions_->action("stop_print"));
+	}
+	if (d->gvpart_)
+	{
+		QDomNodeList l = d->gvpart_->domDocument().elementsByTagName( "ToolBar" );
+		if ( l.length() > 0 )
+		{
+			d->toolbar_->insertLineSeparator();
+			QDomNodeList acts = l.item( 0 ).toElement().elementsByTagName( "Action" );
+			for ( uint i=0; i<acts.length(); i++ )
+			{
+				QDomElement a = acts.item( i ).toElement();
+				if ( a.attribute( "name" ) == "goToPage" )
+					continue;
+				KAction *act = d->gvpart_->action( a );
+				if ( act != 0 )
+					d->plugAction( act );
+			}
+		}
+		/*
+		KAction	*act;
+		d->toolbar_->insertLineSeparator();
+		if ((act = d->gvpart_->action("zoomIn")) != 0)
+			d->plugAction(act);
+		if ((act = d->gvpart_->action("zoomOut")) != 0)
+			d->plugAction(act);
+		d->toolbar_->insertSeparator();
+		if ((act = d->gvpart_->action("prevPage")) != 0)
+			d->plugAction(act);
+		if ((act = d->gvpart_->action("nextPage")) != 0)
+			d->plugAction(act);
+			*/
+	}
+	d->toolbar_->setIconText(KToolBar::IconTextRight);
+	d->toolbar_->setBarPos(KToolBar::Top);
+	d->toolbar_->setMovingEnabled(false);
+	//d->adjustSize();
+
+	// construct the layout
+	QVBoxLayout	*l0 = new QVBoxLayout(d->mainwidget_, 0, 0);
+	l0->addWidget(d->toolbar_, AlignTop);
+	if (d->gvpart_)
+		l0->addWidget(d->gvpart_->widget());
+
+	resize(855, 500);
+	setCaption(i18n("Print Preview"));
+}
+
+void KPrintPreview::openFile(const QString& file)
+{
+	d->gvpart_->openURL(KURL(file));
+}
+
+bool KPrintPreview::isValid() const
+{
+	return (d->gvpart_ != 0);
+}
+
+bool KPrintPreview::preview(const QString& file, bool previewOnly, WId parentId)
+{
+	KMimeType::Ptr mime = KMimeType::findByPath( file );
+	bool isPS = ( mime->name() == "application/postscript" );
+	if ( !isPS )
+		kdDebug( 500 ) << "Previewing a non PostScript file, built-in preview disabled" << endl;
+
+	KConfig	*conf = KMFactory::self()->printConfig();
+	conf->setGroup("General");
+	KLibFactory	*factory(0);
+	bool	externalPreview = conf->readBoolEntry("ExternalPreview", false);
+	QWidget	*parentW = QWidget::find(parentId);
+	QString	exe;
+	if (!externalPreview && isPS && (factory = componentFactory()) != 0)
+	{
+		KPrintPreview	dlg(parentW, previewOnly);
+		dlg.initView(factory);
+
+		if (dlg.isValid())
+		{
+			dlg.openFile(file);
+			return dlg.exec();
+		}
+		else 
+		{
+			// do nothing at that point: try to use the other way around by
+			// using an external PS viewer if possible
+		}
+	}
+
+	// Either the PS viewer component was not found, or an external
+	// preview program has been specified
+	KPreviewProc	proc;
+	if (externalPreview && isPS )
+	{
+		exe = conf->readPathEntry("PreviewCommand", "gv");
+		if (KStandardDirs::findExe(exe).isEmpty())
+		{
+			QString	msg = i18n("The preview program %1 cannot be found. "
+						       "Check that the program is correctly installed and "
+						       "located in a directory included in your PATH "
+						       "environment variable.").arg(exe);
+			return continuePrint(msg, parentW, previewOnly);
+		}
+		proc << exe << file;
+	}
+	else
+	{
+		KService::Ptr serv = KServiceTypeProfile::preferredService( mime->name(), QString::null );
+		if ( serv )
+		{
+			KURL url;
+			url.setPath( file );
+			QStringList args = KRun::processDesktopExec( *serv, url, false );
+			proc << args;
+			exe = serv->name();
+		}
+		else
+		{
+			// in that case, the PS viewer component could not be loaded and no service
+			// could be found to view PS
+			QString msg;
+			if ( isPS )
+				msg = i18n("Preview failed: neither the internal KDE PostScript "
+			               "viewer (KGhostView) nor any other external PostScript "
+			               "viewer could be found.");
+			else
+				msg = i18n( "Preview failed: KDE could not find any application "
+						    "to preview files of type %1." ).arg( mime->name() );
+
+			return continuePrint(msg, parentW, previewOnly);
+		}
+	}
+
+	// start the preview process
+	if (!proc.startPreview())
+	{
+		QString	msg = i18n("Preview failed: unable to start program %1.").arg(exe);
+		return continuePrint(msg, parentW, previewOnly);
+	}
+	else if (!previewOnly)
+	{
+		return (KMessageBox::questionYesNo(parentW, i18n("Do you want to continue printing?"), QString::null, KGuiItem(i18n("Print"),"fileprint"), KStdGuiItem::cancel(), "continuePrinting") == KMessageBox::Yes);
+	}
+	else
+		return false;
+}
+
+#include "kprintpreview.moc"