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Diffstat (limited to 'kdeprint/kprintpreview.cpp')
| -rw-r--r-- | kdeprint/kprintpreview.cpp | 325 |
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" |