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329 lines
9.2 KiB
329 lines
9.2 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "kprintpreview.h"
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#include "kmfactory.h"
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#include <tqfile.h>
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#include <tqlayout.h>
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#include <tqvbox.h>
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#include <kparts/part.h>
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#include <kaccel.h>
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#include <kaction.h>
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#include <klibloader.h>
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#include <ktrader.h>
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#include <kuserprofile.h>
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#include <krun.h>
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#include <kapplication.h>
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#include <kstandarddirs.h>
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#include <klocale.h>
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#include <kmessagebox.h>
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#include <kdebug.h>
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#include <kconfig.h>
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#include <ktoolbar.h>
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#include <kmimetype.h>
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KPreviewProc::KPreviewProc()
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: KProcess()
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{
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m_bOk = false;
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connect(this, TQT_SIGNAL(processExited(KProcess*)), TQT_SLOT(slotProcessExited(KProcess*)));
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}
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KPreviewProc::~KPreviewProc()
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{
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}
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bool KPreviewProc::startPreview()
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{
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if (start())
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{
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kapp->enter_loop();
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return m_bOk;
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}
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else
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return false;
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}
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void KPreviewProc::slotProcessExited(KProcess* proc)
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{
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kapp->exit_loop();
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if ( proc->normalExit() && proc->exitStatus() == 0 )
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m_bOk = true;
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else
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kdDebug(500) << "KPreviewProc::slotProcessExited: normalExit=" << proc->normalExit()
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<< " exitStatus=" << proc->exitStatus() << endl;
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}
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//*******************************************************************************************
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class KPrintPreview::KPrintPreviewPrivate
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{
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public:
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KPrintPreviewPrivate(KPrintPreview *dlg) : gvpart_(0)
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{
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mainwidget_ = new TQWidget(dlg, "MainWidget");
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toolbar_ = new KToolBar(mainwidget_, "PreviewToolBar", true);
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actions_ = new KActionCollection(dlg);
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accel_ = new KAccel(dlg);
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previewonly_ = false;
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}
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~KPrintPreviewPrivate()
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{
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if (gvpart_) delete gvpart_;
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}
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void plugAction(KAction *act)
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{
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act->plug(toolbar_);
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act->plugAccel(accel_);
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}
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KParts::ReadOnlyPart *gvpart_;
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KToolBar *toolbar_;
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KActionCollection *actions_;
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TQWidget *mainwidget_;
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KAccel *accel_;
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bool previewonly_;
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};
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static KLibFactory* componentFactory()
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{
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kdDebug(500) << "tdeprint: querying trader for 'application/postscript' service" << endl;
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KLibFactory *factory(0);
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factory = KLibLoader::self()->factory("libkghostviewpart");
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if( factory )
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return factory;
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KTrader::OfferList offers = KTrader::self()->query(TQString::tqfromLatin1("application/postscript"), TQString::tqfromLatin1("KParts/ReadOnlyPart"), TQString::null, TQString::null);
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for (KTrader::OfferList::ConstIterator it = offers.begin(); it != offers.end(); ++it)
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{
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KService::Ptr service = *it;
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factory = KLibLoader::self()->factory(TQFile::encodeName(service->library()));
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if (factory)
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break;
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}
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if (!factory)
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{
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// nothing has been found, try to load directly the KGhostview part
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factory = KLibLoader::self()->factory("libkghostviewpart");
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}
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return factory;
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}
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static bool continuePrint(const TQString& msg_, TQWidget *parent, bool previewOnly)
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{
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QString msg(msg_);
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if (previewOnly)
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{
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KMessageBox::error(parent, msg);
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return false;
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}
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else
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{
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msg.append(" ").append(i18n("Do you want to continue printing anyway?"));
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return (KMessageBox::warningContinueCancel(parent, msg, TQString::null, KGuiItem(i18n("Print"),"fileprint")) == KMessageBox::Continue);
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}
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}
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//*******************************************************************************************
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KPrintPreview::KPrintPreview(TQWidget *parent, bool previewOnly)
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: KDialogBase(parent, "PreviewDlg", true, i18n("Print Preview"), 0)
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{
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kdDebug(500) << "tdeprint: creating preview dialog" << endl;
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d = new KPrintPreviewPrivate(this);
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d->previewonly_ = previewOnly;
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// create main view and actions
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setMainWidget(d->mainwidget_);
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if (previewOnly)
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KStdAction::close(TQT_TQOBJECT(this), TQT_SLOT(reject()), d->actions_, "close_print");
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else
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{
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new KAction(i18n("Print"), "fileprint", Qt::Key_Return, TQT_TQOBJECT(this), TQT_SLOT(accept()), d->actions_, "continue_print");
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new KAction(i18n("Cancel"), "stop", Qt::Key_Escape, TQT_TQOBJECT(this), TQT_SLOT(reject()), d->actions_, "stop_print");
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}
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}
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KPrintPreview::~KPrintPreview()
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{
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delete d;
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}
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void KPrintPreview::initView(KLibFactory *factory)
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{
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// load the component
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d->gvpart_ = (KParts::ReadOnlyPart*)factory->create(TQT_TQOBJECT(d->mainwidget_), "gvpart", "KParts::ReadOnlyPart");
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// populate the toolbar
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if (d->previewonly_)
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d->plugAction(d->actions_->action("close_print"));
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else
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{
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d->plugAction(d->actions_->action("continue_print"));
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d->plugAction(d->actions_->action("stop_print"));
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}
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if (d->gvpart_)
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{
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TQDomNodeList l = d->gvpart_->domDocument().elementsByTagName( "ToolBar" );
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if ( l.length() > 0 )
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{
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d->toolbar_->insertLineSeparator();
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TQDomNodeList acts = l.item( 0 ).toElement().elementsByTagName( "Action" );
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for ( uint i=0; i<acts.length(); i++ )
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{
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TQDomElement a = acts.item( i ).toElement();
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if ( a.attribute( "name" ) == "goToPage" )
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continue;
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KAction *act = d->gvpart_->action( a );
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if ( act != 0 )
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d->plugAction( act );
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}
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}
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/*
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KAction *act;
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d->toolbar_->insertLineSeparator();
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if ((act = d->gvpart_->action("zoomIn")) != 0)
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d->plugAction(act);
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if ((act = d->gvpart_->action("zoomOut")) != 0)
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d->plugAction(act);
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d->toolbar_->insertSeparator();
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if ((act = d->gvpart_->action("prevPage")) != 0)
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d->plugAction(act);
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if ((act = d->gvpart_->action("nextPage")) != 0)
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d->plugAction(act);
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*/
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}
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d->toolbar_->setIconText(KToolBar::IconTextRight);
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d->toolbar_->setBarPos(KToolBar::Top);
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d->toolbar_->setMovingEnabled(false);
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//d->adjustSize();
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// construct the layout
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TQVBoxLayout *l0 = new TQVBoxLayout(d->mainwidget_, 0, 0);
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l0->addWidget(d->toolbar_, AlignTop);
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if (d->gvpart_)
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l0->addWidget(d->gvpart_->widget());
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resize(855, 500);
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setCaption(i18n("Print Preview"));
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}
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void KPrintPreview::openFile(const TQString& file)
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{
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d->gvpart_->openURL(KURL(file));
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}
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bool KPrintPreview::isValid() const
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{
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return (d->gvpart_ != 0);
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}
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bool KPrintPreview::preview(const TQString& file, bool previewOnly, WId parentId)
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{
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KMimeType::Ptr mime = KMimeType::findByPath( file );
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bool isPS = ( mime->name() == "application/postscript" );
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if ( !isPS )
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kdDebug( 500 ) << "Previewing a non PostScript file, built-in preview disabled" << endl;
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KConfig *conf = KMFactory::self()->printConfig();
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conf->setGroup("General");
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KLibFactory *factory(0);
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bool externalPreview = conf->readBoolEntry("ExternalPreview", false);
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TQWidget *parentW = TQT_TQWIDGET(TQWidget::find(parentId));
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TQString exe;
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if (!externalPreview && isPS && (factory = componentFactory()) != 0)
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{
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KPrintPreview dlg(parentW, previewOnly);
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dlg.initView(factory);
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if (dlg.isValid())
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{
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dlg.openFile(file);
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return dlg.exec();
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}
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else
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{
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// do nothing at that point: try to use the other way around by
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// using an external PS viewer if possible
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}
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}
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// Either the PS viewer component was not found, or an external
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// preview program has been specified
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KPreviewProc proc;
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if (externalPreview && isPS )
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{
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exe = conf->readPathEntry("PreviewCommand", "gv");
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if (KStandardDirs::findExe(exe).isEmpty())
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{
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QString msg = i18n("The preview program %1 cannot be found. "
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"Check that the program is correctly installed and "
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"located in a directory included in your PATH "
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"environment variable.").arg(exe);
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return continuePrint(msg, parentW, previewOnly);
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}
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proc << exe << file;
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}
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else
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{
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KService::Ptr serv = KServiceTypeProfile::preferredService( mime->name(), TQString::null );
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if ( serv )
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{
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KURL url;
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url.setPath( file );
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TQStringList args = KRun::processDesktopExec( *serv, url, false );
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proc << args;
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exe = serv->name();
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}
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else
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{
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// in that case, the PS viewer component could not be loaded and no service
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// could be found to view PS
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TQString msg;
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if ( isPS )
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msg = i18n("Preview failed: neither the internal KDE PostScript "
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"viewer (KGhostView) nor any other external PostScript "
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"viewer could be found.");
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else
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msg = i18n( "Preview failed: KDE could not find any application "
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"to preview files of type %1." ).arg( mime->name() );
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return continuePrint(msg, parentW, previewOnly);
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}
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}
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// start the preview process
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if (!proc.startPreview())
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{
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QString msg = i18n("Preview failed: unable to start program %1.").arg(exe);
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return continuePrint(msg, parentW, previewOnly);
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}
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else if (!previewOnly)
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{
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return (KMessageBox::questionYesNo(parentW, i18n("Do you want to continue printing?"), TQString::null, KGuiItem(i18n("Print"),"fileprint"), KStdGuiItem::cancel(), "continuePrinting") == KMessageBox::Yes);
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}
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else
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return false;
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}
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#include "kprintpreview.moc"
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