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00020
00021 #include "kprintpreview.h"
00022 #include "kmfactory.h"
00023
00024 #include <qfile.h>
00025 #include <qlayout.h>
00026 #include <qvbox.h>
00027
00028 #include <kparts/part.h>
00029 #include <kaccel.h>
00030 #include <kaction.h>
00031 #include <klibloader.h>
00032 #include <ktrader.h>
00033 #include <kuserprofile.h>
00034 #include <krun.h>
00035 #include <kapplication.h>
00036 #include <kstandarddirs.h>
00037 #include <klocale.h>
00038 #include <kmessagebox.h>
00039 #include <kdebug.h>
00040 #include <kconfig.h>
00041 #include <ktoolbar.h>
00042 #include <kmimetype.h>
00043
00044 KPreviewProc::KPreviewProc()
00045 : KProcess()
00046 {
00047 m_bOk = false;
00048 connect(this, SIGNAL(processExited(KProcess*)), SLOT(slotProcessExited(KProcess*)));
00049 }
00050
00051 KPreviewProc::~KPreviewProc()
00052 {
00053 }
00054
00055 bool KPreviewProc::startPreview()
00056 {
00057 if (start())
00058 {
00059 kapp->enter_loop();
00060 return m_bOk;
00061 }
00062 else
00063 return false;
00064 }
00065
00066 void KPreviewProc::slotProcessExited(KProcess* proc)
00067 {
00068 kapp->exit_loop();
00069 if ( proc->normalExit() && proc->exitStatus() == 0 )
00070 m_bOk = true;
00071 else
00072 kdDebug(500) << "KPreviewProc::slotProcessExited: normalExit=" << proc->normalExit()
00073 << " exitStatus=" << proc->exitStatus() << endl;
00074 }
00075
00076
00077
00078 class KPrintPreview::KPrintPreviewPrivate
00079 {
00080 public:
00081 KPrintPreviewPrivate(KPrintPreview *dlg) : gvpart_(0)
00082 {
00083 mainwidget_ = new QWidget(dlg, "MainWidget");
00084 toolbar_ = new KToolBar(mainwidget_, "PreviewToolBar", true);
00085 actions_ = new KActionCollection(dlg);
00086 accel_ = new KAccel(dlg);
00087 previewonly_ = false;
00088 }
00089 ~KPrintPreviewPrivate()
00090 {
00091 if (gvpart_) delete gvpart_;
00092 }
00093 void plugAction(KAction *act)
00094 {
00095 act->plug(toolbar_);
00096 act->plugAccel(accel_);
00097 }
00098
00099 KParts::ReadOnlyPart *gvpart_;
00100 KToolBar *toolbar_;
00101 KActionCollection *actions_;
00102 QWidget *mainwidget_;
00103 KAccel *accel_;
00104 bool previewonly_;
00105 };
00106
00107 static KLibFactory* componentFactory()
00108 {
00109 kdDebug(500) << "kdeprint: querying trader for 'application/postscript' service" << endl;
00110 KLibFactory *factory(0);
00111 KTrader::OfferList offers = KTrader::self()->query(QString::fromLatin1("application/postscript"), QString::fromLatin1("KParts/ReadOnlyPart"), QString::null, QString::null);
00112 for (KTrader::OfferList::ConstIterator it = offers.begin(); it != offers.end(); ++it)
00113 {
00114 KService::Ptr service = *it;
00115 factory = KLibLoader::self()->factory(QFile::encodeName(service->library()));
00116 if (factory)
00117 break;
00118 }
00119 if (!factory)
00120 {
00121
00122 factory = KLibLoader::self()->factory("libkghostviewpart");
00123 }
00124 return factory;
00125 }
00126
00127 static bool continuePrint(const QString& msg_, QWidget *parent, bool previewOnly)
00128 {
00129 QString msg(msg_);
00130 if (previewOnly)
00131 {
00132 KMessageBox::error(parent, msg);
00133 return false;
00134 }
00135 else
00136 {
00137 msg.append(" ").append(i18n("Do you want to continue printing anyway?"));
00138 return (KMessageBox::warningContinueCancel(parent, msg, QString::null, KGuiItem(i18n("Print"),"fileprint")) == KMessageBox::Continue);
00139 }
00140 }
00141
00142
00143
00144 KPrintPreview::KPrintPreview(QWidget *parent, bool previewOnly)
00145 : KDialogBase(parent, "PreviewDlg", true, i18n("Print Preview"), 0)
00146 {
00147 kdDebug(500) << "kdeprint: creating preview dialog" << endl;
00148 d = new KPrintPreviewPrivate(this);
00149 d->previewonly_ = previewOnly;
00150
00151
00152 setMainWidget(d->mainwidget_);
00153 if (previewOnly)
00154 KStdAction::close(this, SLOT(reject()), d->actions_, "close_print");
00155 else
00156 {
00157 new KAction(i18n("Print"), "fileprint", Qt::Key_Return, this, SLOT(accept()), d->actions_, "continue_print");
00158 new KAction(i18n("Cancel"), "stop", Qt::Key_Escape, this, SLOT(reject()), d->actions_, "stop_print");
00159 }
00160
00161 }
00162
00163 KPrintPreview::~KPrintPreview()
00164 {
00165 delete d;
00166 }
00167
00168 void KPrintPreview::initView(KLibFactory *factory)
00169 {
00170
00171 d->gvpart_ = (KParts::ReadOnlyPart*)factory->create(d->mainwidget_, "gvpart", "KParts::ReadOnlyPart");
00172
00173
00174 if (d->previewonly_)
00175 d->plugAction(d->actions_->action("close_print"));
00176 else
00177 {
00178 d->plugAction(d->actions_->action("continue_print"));
00179 d->plugAction(d->actions_->action("stop_print"));
00180 }
00181 if (d->gvpart_)
00182 {
00183 QDomNodeList l = d->gvpart_->domDocument().elementsByTagName( "ToolBar" );
00184 if ( l.length() > 0 )
00185 {
00186 d->toolbar_->insertLineSeparator();
00187 QDomNodeList acts = l.item( 0 ).toElement().elementsByTagName( "Action" );
00188 for ( uint i=0; i<acts.length(); i++ )
00189 {
00190 QDomElement a = acts.item( i ).toElement();
00191 if ( a.attribute( "name" ) == "goToPage" )
00192 continue;
00193 KAction *act = d->gvpart_->action( a );
00194 if ( act != 0 )
00195 d->plugAction( act );
00196 }
00197 }
00198
00199
00200
00201
00202
00203
00204
00205
00206
00207
00208
00209
00210
00211 }
00212 d->toolbar_->setIconText(KToolBar::IconTextRight);
00213 d->toolbar_->setBarPos(KToolBar::Top);
00214 d->toolbar_->setMovingEnabled(false);
00215
00216
00217
00218 QVBoxLayout *l0 = new QVBoxLayout(d->mainwidget_, 0, 0);
00219 l0->addWidget(d->toolbar_, AlignTop);
00220 if (d->gvpart_)
00221 l0->addWidget(d->gvpart_->widget());
00222
00223 resize(855, 500);
00224 setCaption(i18n("Print Preview"));
00225 }
00226
00227 void KPrintPreview::openFile(const QString& file)
00228 {
00229 d->gvpart_->openURL(KURL(file));
00230 }
00231
00232 bool KPrintPreview::isValid() const
00233 {
00234 return (d->gvpart_ != 0);
00235 }
00236
00237 bool KPrintPreview::preview(const QString& file, bool previewOnly, WId parentId)
00238 {
00239 KMimeType::Ptr mime = KMimeType::findByPath( file );
00240 bool isPS = ( mime->name() == "application/postscript" );
00241 if ( !isPS )
00242 kdDebug( 500 ) << "Previewing a non PostScript file, built-in preview disabled" << endl;
00243
00244 KConfig *conf = KMFactory::self()->printConfig();
00245 conf->setGroup("General");
00246 KLibFactory *factory(0);
00247 bool externalPreview = conf->readBoolEntry("ExternalPreview", false);
00248 QWidget *parentW = QWidget::find(parentId);
00249 QString exe;
00250 if (!externalPreview && isPS && (factory = componentFactory()) != 0)
00251 {
00252 KPrintPreview dlg(parentW, previewOnly);
00253 dlg.initView(factory);
00254
00255 if (dlg.isValid())
00256 {
00257 dlg.openFile(file);
00258 return dlg.exec();
00259 }
00260 else
00261 {
00262
00263
00264 }
00265 }
00266
00267
00268
00269 KPreviewProc proc;
00270 if (externalPreview && isPS )
00271 {
00272 exe = conf->readPathEntry("PreviewCommand", "gv");
00273 if (KStandardDirs::findExe(exe).isEmpty())
00274 {
00275 QString msg = i18n("The preview program %1 cannot be found. "
00276 "Check that the program is correctly installed and "
00277 "located in a directory included in your PATH "
00278 "environment variable.").arg(exe);
00279 return continuePrint(msg, parentW, previewOnly);
00280 }
00281 proc << exe << file;
00282 }
00283 else
00284 {
00285 KService::Ptr serv = KServiceTypeProfile::preferredService( mime->name(), QString::null );
00286 if ( serv )
00287 {
00288 KURL url;
00289 url.setPath( file );
00290 QStringList args = KRun::processDesktopExec( *serv, url, false );
00291 proc << args;
00292 exe = serv->name();
00293 }
00294 else
00295 {
00296
00297
00298 QString msg;
00299 if ( isPS )
00300 msg = i18n("Preview failed: neither the internal KDE PostScript "
00301 "viewer (KGhostView) nor any other external PostScript "
00302 "viewer could be found.");
00303 else
00304 msg = i18n( "Preview failed: KDE could not find any application "
00305 "to preview files of type %1." ).arg( mime->name() );
00306
00307 return continuePrint(msg, parentW, previewOnly);
00308 }
00309 }
00310
00311
00312 if (!proc.startPreview())
00313 {
00314 QString msg = i18n("Preview failed: unable to start program %1.").arg(exe);
00315 return continuePrint(msg, parentW, previewOnly);
00316 }
00317 else if (!previewOnly)
00318 {
00319 return (KMessageBox::questionYesNo(parentW, i18n("Do you want to continue printing?"), QString::null, KGuiItem(i18n("Print"),"fileprint"), KStdGuiItem::cancel(), "continuePrinting") == KMessageBox::Yes);
00320 }
00321 else
00322 return false;
00323 }
00324
00325 #include "kprintpreview.moc"