pageview.cpp.svn-base

okular

            if ( cursor().shape() == Qt::SizeAllCursor )
                updateCursor( e->pos() );

            PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );

            // if the mouse has not moved since the press, that's a -click-
            if ( leftButton && pageItem && d->mousePressPos == e->globalPos())
            {
                double nX = (double)(e->x() - pageItem->geometry().left()) / (double)pageItem->width(),
                       nY = (double)(e->y() - pageItem->geometry().top()) / (double)pageItem->height();
                const ObjectRect * rect;
                rect = pageItem->page()->getObjectRect( ObjectRect::Link, nX, nY );
                if ( rect )
                {
                    // handle click over a link
                    const KPDFLink * link = static_cast< const KPDFLink * >( rect->pointer() );
                    d->document->processLink( link );
                }
                else
                {
                    // a link can move us to another page or even to another document, there's no point in trying to
                    //  process the click on the image once we have processes the click on the link
                    rect = pageItem->page()->getObjectRect( ObjectRect::Image, nX, nY );
                    if ( rect )
                    {
                        // handle click over a image
                    }
/*		Enrico and me have decided this is not worth the trouble it generates
                    else
                    {
                        // if not on a rect, the click selects the page
                        // if ( pageItem->pageNumber() != (int)d->document->currentPage() )
                        d->document->setViewportPage( pageItem->pageNumber(), PAGEVIEW_ID );
                    }*/
                }
            }
            else if ( rightButton )
            {
              if ( d->mouseTextSelecting )
              {
                d->mouseTextSelecting = false;
                delete d->mouseTextSelectionInfo;
                d->mouseTextSelectionInfo=0;
//                textSelectionClear();
//                 textSelectionToClipboard();
              }
              else    
                // right click (if not within 5 px of the press point, the mode
                // had been already changed to 'Selection' instead of 'Normal')
                emit rightClick( pageItem ? pageItem->page() : 0, e->globalPos() );
            }
            }break;

        case MouseZoom:
            // if a selection rect has been defined, zoom into it
            if ( leftButton && d->mouseSelecting )
            {
                QRect selRect = d->mouseSelectionRect.normalized();
                if ( selRect.width() <= 8 && selRect.height() <= 8 )
                {
                    selectionClear();
                    break;
                }

                // find out new zoom ratio and normalized view center (relative to the contentsRect)
                double zoom = qMin( (double)visibleWidth() / (double)selRect.width(), (double)visibleHeight() / (double)selRect.height() );
                double nX = (double)(selRect.left() + selRect.right()) / (2.0 * (double)contentsWidth());
                double nY = (double)(selRect.top() + selRect.bottom()) / (2.0 * (double)contentsHeight());

                // zoom up to 400%
                if ( d->zoomFactor <= 4.0 || zoom <= 1.0 )
                {
                    d->zoomFactor *= zoom;
                    viewport()->setUpdatesEnabled( false );
                    updateZoom( ZoomRefreshCurrent );
                    viewport()->setUpdatesEnabled( true );
                }

                // recenter view and update the viewport
                center( (int)(nX * contentsWidth()), (int)(nY * contentsHeight()) );
                updateContents();

                // hide message box and delete overlay window
                selectionClear();
            }
            break;

        case MouseSelect:{
            // if mouse is released and selection is null this is a rightClick
            if ( rightButton && !d->mouseSelecting )
            {
                PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
                emit rightClick( pageItem ? pageItem->page() : 0, e->globalPos() );
                break;
            }

            // if a selection is defined, display a popup
            if ( (!leftButton && !d->aPrevAction) || (!rightButton && d->aPrevAction) ||
                 !d->mouseSelecting )
                break;

            QRect selectionRect = d->mouseSelectionRect.normalized();
            if ( selectionRect.width() <= 8 && selectionRect.height() <= 8 )
            {
                selectionClear();
                if ( d->aPrevAction )
                {
                    d->aPrevAction->trigger();
                    d->aPrevAction = 0;
                }
                break;
            }

            // if we support text generation 
            QString selectedText;
            if (d->document->supportsSearching())
            {
		// grab text in selection by extracting it from all intersected pages
		RegularAreaRect * rects=new RegularAreaRect;
		const KPDFPage * kpdfPage=0;
		QVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
		for ( ; iIt != iEnd; ++iIt )
		{
		    PageViewItem * item = *iIt;
		    const QRect & itemRect = item->geometry();
		    if ( selectionRect.intersects( itemRect ) )
		    {
			// request the textpage if there isn't one
			kpdfPage= item->page();
			kWarning() << "checking if page " << item->pageNumber() << " has text " << kpdfPage->hasSearchPage() << endl;
			if ( !kpdfPage->hasSearchPage() )
			    d->document->requestTextPage( kpdfPage->number() );
			// grab text in the rect that intersects itemRect
			QRect relativeRect = selectionRect.intersect( itemRect );
			relativeRect.translate( -itemRect.left(), -itemRect.top() );
			rects->append(new NormalizedRect( relativeRect, item->width(), item->height() ));
		    }
		}
		if (kpdfPage) selectedText = kpdfPage->getText( rects );
            }

            // popup that ask to copy:text and copy/save:image
            KMenu menu( this );
            QAction *textToClipboard = 0, *speakText = 0, *imageToClipboard = 0, *imageToFile = 0;
            if ( d->document->supportsSearching() && !selectedText.isEmpty() )
            {
                menu.addTitle( i18np( "Text (1 character)", "Text (%n characters)", selectedText.length() ) );
                textToClipboard = menu.addAction( SmallIconSet("editcopy"), i18n( "Copy to Clipboard" ) );
                if ( !d->document->isAllowed( KPDFDocument::AllowCopy ) )
                {
                    textToClipboard->setEnabled( false );
                    textToClipboard->setText( i18n("Copy forbidden by DRM") );
                }
                if ( KpdfSettings::useKTTSD() )
                    speakText = menu.addAction( SmallIconSet("kttsd"), i18n( "Speak Text" ) );
            }
            menu.addTitle( i18n( "Image (%1 by %2 pixels)", selectionRect.width(), selectionRect.height() ) );
            imageToClipboard = menu.addAction( QIcon(SmallIcon("image")), i18n( "Copy to Clipboard" ) );
            imageToFile = menu.addAction( QIcon(SmallIcon("filesave")), i18n( "Save to File..." ) );
            QAction *choice = menu.exec( e->globalPos() );
            // check if the user really selected an action
            if ( choice )
            {
            // IMAGE operation choosen
            if ( choice == imageToClipboard || choice == imageToFile )
            {
                // renders page into a pixmap
                QPixmap copyPix( selectionRect.width(), selectionRect.height() );
                QPainter copyPainter( &copyPix );
                copyPainter.translate( -selectionRect.left(), -selectionRect.top() );
                drawDocumentOnPainter( selectionRect, &copyPainter );

                if ( choice == imageToClipboard )
                {
                    // [2] copy pixmap to clipboard
                    QClipboard *cb = QApplication::clipboard();
                    cb->setPixmap( copyPix, QClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setPixmap( copyPix, QClipboard::Selection );
                    d->messageWindow->display( i18n( "Image [%1x%2] copied to clipboard.", copyPix.width(), copyPix.height() ) );
                }
                else if ( choice == imageToFile )
                {
                    // [3] save pixmap to file
                    QString fileName = KFileDialog::getSaveFileName( KUrl(), "image/png image/jpeg", this );
                    if ( fileName.isEmpty() )
                        d->messageWindow->display( i18n( "File not saved." ), PageViewMessage::Warning );
                    else
                    {
                        KMimeType::Ptr mime = KMimeType::findByURL( fileName );
                        QString type;
                        if ( !mime )
                            type = "PNG";
                        else
                            type = mime->name().section( '/', -1 ).toUpper();
                        copyPix.save( fileName, qPrintable( type ) );
                        d->messageWindow->display( i18n( "Image [%1x%2] saved to %3 file.", copyPix.width(), copyPix.height(), type ) );
                    }
                }
            }
            // TEXT operation choosen
            else
            {
                if ( choice == textToClipboard )
                {
                    // [1] copy text to clipboard
                    QClipboard *cb = QApplication::clipboard();
                    cb->setText( selectedText, QClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setText( selectedText, QClipboard::Selection );
                }
                else if ( choice == speakText )
                {
                    // [2] speech selection using KTTSD
                    // Albert says is this ever necessary?
                    // we already attached on Part constructor
                    // If KTTSD not running, start it.
                    QDBusReply<bool> reply = QDBus::sessionBus().interface()->isServiceRegistered("org.kde.kttsd");
                    bool kttsdactive = false;
                    if ( reply.isValid() )
                        kttsdactive = reply.value();
                    if ( !kttsdactive )
                    {
                        QString error;
                        if (KToolInvocation::startServiceByDesktopName("kttsd", QStringList(), &error))
                        {
                            d->messageWindow->display( i18n("Starting KTTSD Failed: %1", error) );
                        }
                        else
                        {
                            kttsdactive = true;
                        }
                    }
                    if ( kttsdactive )
                    {
                        // creating the connection to the kspeech interface
                        QDBusInterface kspeech("org.kde.kttsd", "/KSpeech", "org.kde.KSpeech");
                        kspeech.call("setApplicationName", "okular");
                        kspeech.call("say", selectedText, 0);
                    }
                }
            }
            }
            // clear widget selection and invalidate rect
            selectionClear();

            // restore previous action if came from it using right button
            if ( d->aPrevAction )
            {
                d->aPrevAction->trigger();
                d->aPrevAction = 0;
            }
            }break;
    }

    // reset mouse press / 'drag start' position
    d->mousePressPos = QPoint();
}
}

void PageView::wheelEvent( QWheelEvent *e )
{
if (d->document->handleEvent( e ) )
{
    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    int delta = e->delta(),
        vScroll = verticalScrollBar()->value();
    e->accept();
    if ( (e->state() & Qt::ControlButton) == Qt::ControlButton ) {
        if ( e->delta() < 0 )
            slotZoomOut();
        else
            slotZoomIn();
    }
    else if ( delta <= -120 && !KpdfSettings::viewContinuous() && vScroll == verticalScrollBar()->maximum() )
    {
        // go to next page
        if ( d->document->currentPage() < d->items.count() - 1 )
        {
            // more optimized than document->setNextPage and then move view to top
            DocumentViewport newViewport = d->document->viewport();
            newViewport.pageNumber += d->document->currentPage() ? viewColumns() : 1;
            if ( newViewport.pageNumber >= (int)d->items.count() )
                newViewport.pageNumber = d->items.count() - 1;
            newViewport.rePos.enabled = true;
            newViewport.rePos.normalizedY = 0.0;
            d->document->setViewport( newViewport );
        }
    }
    else if ( delta >= 120 && !KpdfSettings::viewContinuous() && vScroll == verticalScrollBar()->minimum() )
    {
        // go to prev page
        if ( d->document->currentPage() > 0 )
        {
            // more optimized than document->setPrevPage and then move view to bottom
            DocumentViewport newViewport = d->document->viewport();
            newViewport.pageNumber -= viewColumns();
            if ( newViewport.pageNumber < 0 )
                newViewport.pageNumber = 0;
            newViewport.rePos.enabled = true;
            newViewport.rePos.normalizedY = 1.0;
            d->document->setViewport( newViewport );
        }
    }
    else
        Q3ScrollView::wheelEvent( e );

    QPoint cp = viewportToContents(e->pos());
    updateCursor(cp);
}
}

void PageView::dragEnterEvent( QDragEnterEvent * ev )
{
if (d->document->handleEvent( ev ) )
{
    ev->accept();
}
}

void PageView::dropEvent( QDropEvent * ev )
{
if (d->docu