mirror of
https://invent.kde.org/graphics/okular
synced 2024-08-25 02:45:38 +00:00
584 lines
16 KiB
C++
584 lines
16 KiB
C++
#include <config.h>
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#include <kaction.h>
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#include <kaboutdata.h>
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#include <kaboutdialog.h>
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#include <kapplication.h>
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#include <kbugreport.h>
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#include <kconfig.h>
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#include <kdebug.h>
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#include <kglobal.h>
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#include <klocale.h>
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#include <kmessagebox.h>
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#include <kprinter.h>
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#include <kstdaction.h>
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#include <ktip.h>
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#include <qtimer.h>
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#include "../config.h"
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#include "fontpool.h"
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#include "kdvi_multipage.h"
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#include "kviewpart.h"
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#include "optiondialog.h"
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#include "performanceMeasurement.h"
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#include "zoomlimits.h"
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#ifdef PERFORMANCE_MEASUREMENT
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// These objects are explained in the file "performanceMeasurement.h"
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QTime performanceTimer;
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int performanceFlag = 0;
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#endif
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extern "C"
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{
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void *init_kdvipart()
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{
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KGlobal::locale()->insertCatalogue("kviewshell");
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return new KDVIMultiPageFactory;
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}
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};
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KInstance *KDVIMultiPageFactory::s_instance = 0L;
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KDVIMultiPageFactory::KDVIMultiPageFactory()
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{
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}
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KDVIMultiPageFactory::~KDVIMultiPageFactory()
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{
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delete s_instance;
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s_instance = 0;
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}
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KParts::Part *KDVIMultiPageFactory::createPartObject( QWidget *parentWidget, const char *widgetName, QObject *parent, const char *name, const char *, const QStringList & )
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{
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KParts::Part *obj = new KDVIMultiPage(parentWidget, widgetName, parent, name);
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return obj;
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}
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KInstance *KDVIMultiPageFactory::instance()
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{
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if (!s_instance)
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s_instance = new KInstance("kdvi");
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return s_instance;
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}
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KDVIMultiPage::KDVIMultiPage(QWidget *parentWidget, const char *widgetName, QObject *parent, const char *name)
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: KMultiPage(parentWidget, widgetName, parent, name), window(0), options(0)
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{
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#ifdef PERFORMANCE_MEASUREMENT
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performanceTimer.start();
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#endif
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timer_id = -1;
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setInstance(KDVIMultiPageFactory::instance());
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printer = 0;
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document_history.clear();
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window = new dviWindow( 1.0, scrollView());
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preferencesChanged();
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connect( window, SIGNAL( setStatusBarText( const QString& ) ), this, SIGNAL( setStatusBarText( const QString& ) ) );
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docInfoAction = new KAction(i18n("Document &Info"), 0, this, SLOT(doInfo()), actionCollection(), "info_dvi");
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backAction = KStdAction::back(this, SLOT(doGoBack()), actionCollection(), "go_back");
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forwardAction = KStdAction::forward(this, SLOT(doGoForward()), actionCollection(), "go_forward");
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document_history.setAction(backAction, forwardAction);
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document_history.clear();
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findTextAction = KStdAction::find(window, SLOT(showFindTextDialog()), actionCollection(), "find");
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window->findNextAction = KStdAction::findNext(window, SLOT(findNextText()), actionCollection(), "findnext");
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window->findNextAction->setEnabled(false);
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window->findPrevAction = KStdAction::findPrev(window, SLOT(findPrevText()), actionCollection(), "findprev");
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window->findPrevAction->setEnabled(false);
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copyTextAction = KStdAction::copy(window, SLOT(copyText()), actionCollection(), "copy_text");
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window->DVIselection.setAction(copyTextAction);
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selectAllAction = KStdAction::selectAll(this, SLOT(doSelectAll()), actionCollection(), "edit_select_all");
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new KAction(i18n("Enable All Warnings && Messages"), 0, this, SLOT(doEnableWarnings()), actionCollection(), "enable_msgs");
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exportPSAction = new KAction(i18n("PostScript..."), 0, this, SLOT(doExportPS()), actionCollection(), "export_postscript");
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exportPDFAction = new KAction(i18n("PDF..."), 0, this, SLOT(doExportPDF()), actionCollection(), "export_pdf");
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exportTextAction = new KAction(i18n("Text..."), 0, this, SLOT(doExportText()), actionCollection(), "export_text");
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new KAction(i18n("&DVI Options..."), 0, this, SLOT(doSettings()), actionCollection(), "settings_dvi");
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new KAction(i18n("&Tip of the Day"), 0, this, SLOT(showTip()), actionCollection(), "help_tipofday");
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new KAction(i18n("About the KDVI Plugin"), 0, this, SLOT(about()), actionCollection(), "about_kdvi");
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new KAction(i18n("Help on the KDVI Plugin"), 0, this, SLOT(helpme()), actionCollection(), "help_dvi");
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new KAction(i18n("Report Bug in the KDVI Plugin..."), 0, this, SLOT(bugform()), actionCollection(), "bug_dvi");
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setXMLFile("kdvi_part.rc");
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scrollView()->addChild(window);
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connect(window, SIGNAL(request_goto_page(int, int)), this, SLOT(goto_page(int, int) ) );
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connect(window, SIGNAL(contents_changed(void)), this, SLOT(contents_of_dviwin_changed(void)) );
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readSettings();
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enableActions(false);
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// Show tip of the day, when the first main window is shown.
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QTimer::singleShot(0,this,SLOT(showTipOnStart()));
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}
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KDVIMultiPage::~KDVIMultiPage()
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{
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if (timer_id != -1)
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killTimer(timer_id);
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timer_id = -1;
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writeSettings();
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delete printer;
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}
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bool KDVIMultiPage::openFile()
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{
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document_history.clear();
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emit setStatusBarText(i18n("Loading file %1").arg(m_file));
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bool r = window->setFile(m_file,url().ref());
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if (!r)
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emit setStatusBarText(QString::null);
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window->changePageSize(); // This also calles drawPage();
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emit numberOfPages(window->totalPages());
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enableActions(r);
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return r;
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}
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void KDVIMultiPage::jumpToReference(QString reference)
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{
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if (window) {
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window->reference = reference;
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window->all_fonts_loaded(0); // In spite of its name, this method tries to parse the reference.
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}
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}
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void KDVIMultiPage::contents_of_dviwin_changed(void)
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{
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emit previewChanged(true);
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}
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bool KDVIMultiPage::closeURL()
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{
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document_history.clear();
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window->setFile(""); // That means: close the file. Resize the widget to 0x0.
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enableActions(false);
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return true;
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}
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QStringList KDVIMultiPage::fileFormats()
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{
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QStringList r;
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r << i18n("*.dvi *.DVI|TeX Device Independent files (*.dvi)");
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return r;
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}
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bool KDVIMultiPage::gotoPage(int page)
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{
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document_history.add(page,0);
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window->gotoPage(page+1);
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return true;
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}
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void KDVIMultiPage::goto_page(int page, int y)
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{
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document_history.add(page,y);
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if (y != 0)
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window->gotoPage(page+1, y);
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else
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window->gotoPage(page+1);
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scrollView()->ensureVisible(scrollView()->width()/2, y );
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emit pageInfo(window->totalPages(), page );
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}
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double KDVIMultiPage::setZoom(double zoom)
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{
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if (zoom < ZoomLimits::MinZoom/1000.0)
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zoom = ZoomLimits::MinZoom/1000.0;
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if (zoom > ZoomLimits::MaxZoom/1000.0)
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zoom = ZoomLimits::MaxZoom/1000.0;
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double z = window->setZoom(zoom);
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scrollView()->resizeContents(window->width(), window->height());
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return z;
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}
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double KDVIMultiPage::zoomForHeight(int height)
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{
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return (double)(height-1)/(window->xres*(window->paper_height_in_cm/2.54));
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}
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double KDVIMultiPage::zoomForWidth(int width)
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{
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return (double)(width-1)/(window->xres*(window->paper_width_in_cm/2.54));
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}
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void KDVIMultiPage::setPaperSize(double w, double h)
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{
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window->setPaper(w, h);
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}
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bool KDVIMultiPage::preview(QPainter *p, int w, int h)
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{
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QPixmap *map = window->pix();
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if (!map)
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return false;
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p->scale((double)w/(double)map->width(), (double)h/(double)map->height());
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p->drawPixmap(0, 0, *map);
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return true;
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}
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void KDVIMultiPage::doInfo(void)
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{
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window->showInfo();
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}
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void KDVIMultiPage::doSelectAll(void)
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{
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window->selectAll();
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}
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void KDVIMultiPage::doExportPS(void)
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{
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window->exportPS();
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}
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void KDVIMultiPage::doExportPDF(void)
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{
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window->exportPDF();
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}
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void KDVIMultiPage::doExportText(void)
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{
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window->exportText();
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}
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void KDVIMultiPage::doSettings()
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{
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if (!options) {
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options = new OptionDialog(window);
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connect(options, SIGNAL(preferencesChanged()), this, SLOT(preferencesChanged()));
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}
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options->show();
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}
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void KDVIMultiPage::about()
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{
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KAboutDialog *ab = new KAboutDialog(KAboutDialog::AbtAppStandard,
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i18n("the KDVI plugin"),
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KAboutDialog::Close, KAboutDialog::Close);
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ab->setProduct("kdvi", "1.0", QString::null, QString::null);
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ab->addTextPage (i18n("About"),
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i18n("A previewer for Device Independent files (DVI files) produced "
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"by the TeX typesetting system.<br>"
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"Based on kdvi 0.4.3 and on xdvik, version 18f.<br><hr>"
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"For latest information, visit "
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"<a href=\"http://devel-home.kde.org/~kdvi\">KDVI's Homepage</a>."),
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true);
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ab->addTextPage (i18n("Authors"),
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i18n("Stefan Kebekus<br>"
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"<a href=\"http://btm8x5.mat.uni-bayreuth.de/~kebekus\">"
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"http://btm8x5.mat.uni-bayreuth.de/~kebekus</a><br>"
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"<a href=\"mailto:kebekus@kde.org\">kebekus@kde.org</a><br>"
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"Current maintainer of kdvi. Major rewrite of version 0.4.3."
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"Implementation of hyperlinks.<br>"
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"<hr>"
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"Markku Hinhala<br>"
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"Author of kdvi 0.4.3"
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"<hr>"
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"Nicolai Langfeldt<br>"
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"Maintainer of xdvik"
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"<hr>"
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"Paul Vojta<br>"
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" Author of xdvi<br>"
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"<hr>"
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"Many others. Really, lots of people who were involved in kdvi, xdvik and "
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"xdvi. I apologize to those who I did not mention here. Please send me an "
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"email if you think your name belongs here."),
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true);
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ab->setMinimumWidth(500);
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ab->show();
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}
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void KDVIMultiPage::bugform()
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{
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KAboutData *kab = new KAboutData("kdvi", I18N_NOOP("KDVI"), "1.0", 0, 0, 0, 0, 0);
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KBugReport *kbr = new KBugReport(0, true, kab );
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kbr->show();
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}
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void KDVIMultiPage::helpme()
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{
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kapp->invokeHelp( "", "kdvi" );
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}
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void KDVIMultiPage::preferencesChanged()
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{
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#ifdef DEBUG_MULTIPAGE
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kdDebug(4300) << "preferencesChanged" << endl;
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#endif
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KConfig *config = instance()->config();
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config->reparseConfiguration();
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config->setGroup( "kdvi" );
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int mfmode = config->readNumEntry( "MetafontMode", DefaultMFMode );
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if (( mfmode < 0 ) || (mfmode >= NumberOfMFModes))
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config->writeEntry( "MetafontMode", mfmode = DefaultMFMode );
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bool makepk = config->readBoolEntry( "MakePK", true );
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bool showPS = config->readBoolEntry( "ShowPS", true );
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if (showPS != window->showPS())
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window->setShowPS(showPS);
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bool showHyperLinks = config->readBoolEntry( "ShowHyperLinks", true );
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if (showHyperLinks != window->showHyperLinks())
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window->setShowHyperLinks(showHyperLinks);
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bool useType1Fonts = config->readBoolEntry( "UseType1Fonts", true );
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bool useFontHints = config->readBoolEntry( "UseFontHints", true );
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window->font_pool->setParameters(mfmode, makepk, useType1Fonts, useFontHints);
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window->setEditorCommand( config->readEntry( "EditorCommand", "" ));
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}
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bool KDVIMultiPage::print(const QStringList &pages, int current)
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{
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// Make sure the KPrinter is available
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if (printer == 0) {
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printer = new KPrinter();
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if (printer == 0)
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return false;
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}
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// Feed the printer with useful defaults and information.
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printer->setPageSelection( KPrinter::ApplicationSide );
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printer->setCurrentPage( current+1 );
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printer->setMinMax( 1, window->totalPages() );
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// If pages are marked, give a list of marked pages to the
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// printer. We try to be smart and optimize the list by using ranges
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// ("5-11") wherever possible. The user will be tankful for
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// that. Complicated? Yeah, but that's life.
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if (pages.isEmpty() == true)
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printer->setOption( "kde-range", "" );
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else {
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int commaflag = 0;
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QString range;
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QStringList::ConstIterator it = pages.begin();
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do{
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int val = (*it).toUInt()+1;
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if (commaflag == 1)
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range += QString(", ");
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else
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commaflag = 1;
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int endval = val;
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if (it != pages.end()) {
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QStringList::ConstIterator jt = it;
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jt++;
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do{
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int val2 = (*jt).toUInt()+1;
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if (val2 == endval+1)
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endval++;
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else
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break;
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jt++;
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} while( jt != pages.end() );
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it = jt;
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} else
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it++;
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if (endval == val)
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range += QString("%1").arg(val);
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else
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range += QString("%1-%2").arg(val).arg(endval);
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} while (it != pages.end() );
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printer->setOption( "kde-range", range );
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}
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// Show the printer options requestor
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if (printer->setup(window) == false)
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return false;
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if (printer->pageList().isEmpty() == true) {
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KMessageBox::error( window,
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i18n("The list of pages you selected was empty.\n"
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"Maybe you made an error in selecting the pages, "
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"e.g. by giving an invalid range like '7-2'.") );
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return false;
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}
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// Turn the results of the options requestor into a list arguments
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// which are used by dvips.
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QString dvips_options = QString::null;
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// Print in reverse order.
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if ( printer->pageOrder() == KPrinter::LastPageFirst )
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dvips_options += "-r ";
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// Print only odd pages.
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if ( printer->pageSet() == KPrinter::OddPages )
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dvips_options += "-A ";
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// Print only even pages.
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if ( printer->pageSet() == KPrinter::EvenPages )
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dvips_options += "-B ";
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// Orientation
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if ( printer->orientation() == KPrinter::Landscape )
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dvips_options += "-t landscape ";
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// List of pages to print.
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QValueList<int> pageList = printer->pageList();
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dvips_options += "-pp ";
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int commaflag = 0;
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for( QValueList<int>::ConstIterator it = pageList.begin(); it != pageList.end(); ++it ) {
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if (commaflag == 1)
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dvips_options += QString(",");
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else
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commaflag = 1;
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dvips_options += QString("%1").arg(*it);
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}
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// Now print. For that, export the DVI-File to PostScript. Note that
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// dvips will run concurrently to keep the GUI responsive, keep log
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// of dvips and allow abort. Giving a non-zero printer argument
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// means that the dvi-widget will print the file when dvips
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// terminates, and then delete the output file.
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KTempFile tf;
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window->exportPS(tf.name(), dvips_options, printer);
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// "True" may be a bit euphemistic. However, since dvips runs
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// concurrently, there is no way of telling the result of the
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// printing command at this stage.
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return true;
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}
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// Explanation of the timerEvent.
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//
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// This is a dreadful hack. The problem we adress with this timer
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// event is the following: the kviewshell has a KDirWatch object which
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// looks at the DVI file and calls reload() when the object has
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// changed. That works very nicely in principle, but in practise, when
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// TeX runs for several seconds over a complicated file, this does not
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// work at all. First, most of the time, while TeX is still writing,
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// the file is invalid. Thus, reload() is very often called when the
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// DVI file is bad. We solve this problem by checking the file
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// first. If the file is bad, we do not reload. Second, when the file
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// finally becomes good, it very often happens that KDirWatch does not
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// notify us anymore. Whether this is a bug or a side effect of a
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// feature of KDirWatch, I dare not say. We remedy that problem by
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// using a timer: when reload() was called on a bad file, we
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// automatically come back (via the timerEvent() function) every
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// second and check if the file became good. If so, we stop the
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// timer. It may well happen that KDirWatch calls us several times
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// while we are waiting for the file to become good, but that does not
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// do any harm.
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//
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// -- Stefan Kebekus.
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void KDVIMultiPage::timerEvent( QTimerEvent * )
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{
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#ifdef DEBUG_MULTIPAGE
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kdDebug(4300) << "Timer Event " << endl;
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#endif
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|
reload();
|
|
}
|
|
|
|
void KDVIMultiPage::reload()
|
|
{
|
|
#ifdef DEBUG_MULTIPAGE
|
|
kdDebug(4300) << "Reload file " << m_file << endl;
|
|
#endif
|
|
|
|
if (window->correctDVI(m_file)) {
|
|
killTimer(timer_id);
|
|
timer_id = -1;
|
|
int currsav = window->curr_page();
|
|
|
|
bool r = window->setFile(m_file, QString::null, false);
|
|
enableActions(r);
|
|
|
|
// Go to the old page and tell kviewshell where we are.
|
|
window->gotoPage(currsav);
|
|
// We don't use "currsav" here, because that page may no longer
|
|
// exist. In that case, gotoPage already selected another page.
|
|
emit pageInfo(window->totalPages(), window->curr_page()-1 );
|
|
} else {
|
|
if (timer_id == -1)
|
|
timer_id = startTimer(1000);
|
|
}
|
|
}
|
|
|
|
void KDVIMultiPage::enableActions(bool b)
|
|
{
|
|
docInfoAction->setEnabled(b);
|
|
selectAllAction->setEnabled(b);
|
|
findTextAction->setEnabled(b);
|
|
exportPSAction->setEnabled(b);
|
|
exportPDFAction->setEnabled(b);
|
|
exportTextAction->setEnabled(b);
|
|
}
|
|
|
|
void KDVIMultiPage::doGoBack(void)
|
|
{
|
|
historyItem *it = document_history.back();
|
|
if (it != 0)
|
|
goto_page(it->page, it->ypos);
|
|
else
|
|
kdDebug(4300) << "Faulty return -- bad history buffer" << endl;
|
|
return;
|
|
}
|
|
|
|
void KDVIMultiPage::doGoForward(void)
|
|
{
|
|
historyItem *it = document_history.forward();
|
|
if (it != 0)
|
|
goto_page(it->page, it->ypos);
|
|
else
|
|
kdDebug(4300) << "Faulty return -- bad history buffer" << endl;
|
|
return;
|
|
}
|
|
|
|
void KDVIMultiPage::doEnableWarnings(void)
|
|
{
|
|
KMessageBox::information (window, i18n("All messages and warnings will now be shown."));
|
|
KMessageBox::enableAllMessages();
|
|
kapp->config()->reparseConfiguration();
|
|
KTipDialog::setShowOnStart(true);
|
|
}
|
|
|
|
void KDVIMultiPage::showTip(void)
|
|
{
|
|
KTipDialog::showTip(window, "kdvi/tips", true);
|
|
}
|
|
|
|
void KDVIMultiPage::showTipOnStart(void)
|
|
{
|
|
KTipDialog::showTip(window, "kdvi/tips");
|
|
}
|
|
|
|
void KDVIMultiPage::guiActivateEvent( KParts::GUIActivateEvent * event )
|
|
{
|
|
if (event->activated() && url().isEmpty())
|
|
emit setWindowCaption( i18n("KDVI") );
|
|
}
|
|
|
|
#include "kdvi_multipage.moc"
|