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576 lines
18 KiB
576 lines
18 KiB
/***************************************************************************
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* Copyright (C) 2004-2006 by Albert Astals Cid <tsdgeos@terra.es> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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// qt/kde includes
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#include <tqtimer.h>
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#include <tqpainter.h>
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#include <klocale.h>
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#include <kurl.h>
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#include <kurldrag.h>
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#include <tdeaction.h>
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#include <kiconloader.h>
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#include <tdeactioncollection.h>
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// local includes
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#include "thumbnaillist.h"
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#include "pagepainter.h"
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#include "searchwidget.h" // for SW_SEARCH_ID
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#include "core/document.h"
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#include "core/generator.h"
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#include "core/page.h"
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#include "conf/settings.h"
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// ThumbnailWidget represents a single thumbnail in the ThumbnailList
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class ThumbnailWidget : public TQWidget
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{
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public:
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ThumbnailWidget( TQWidget * parent, const KPDFPage * page, ThumbnailList * tl );
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// set internal parameters to fit the page in the given width
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void resizeFitWidth( int width );
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// set thumbnail's selected state
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void setSelected( bool selected );
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// query methods
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int heightHint() const { return m_pixmapHeight + m_labelHeight + m_margin; }
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int pixmapWidth() const { return m_pixmapWidth; }
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int pixmapHeight() const { return m_pixmapHeight; }
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int pageNumber() const { return m_page->number(); }
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const KPDFPage * page() const { return m_page; }
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protected:
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void mouseReleaseEvent( TQMouseEvent * e );
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void paintEvent(TQPaintEvent *);
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private:
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// the margin around the widget
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static int const m_margin = 16;
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// used to access 'forwardRightClick( .. )' and 'getBookmarkOverlay()'
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ThumbnailList * m_tl;
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const KPDFPage * m_page;
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bool m_selected;
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int m_pixmapWidth, m_pixmapHeight;
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int m_labelHeight, m_labelNumber;
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};
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/** ThumbnailList implementation **/
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ThumbnailList::ThumbnailList( TQWidget *parent, KPDFDocument *document )
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: TQScrollView( parent, "KPDF::Thumbnails", WNoAutoErase | WStaticContents ),
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m_document( document ), m_selected( 0 ), m_delayTimer( 0 ), m_bookmarkOverlay( 0 )
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{
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// set scrollbars
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setHScrollBarMode( TQScrollView::AlwaysOff );
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setVScrollBarMode( TQScrollView::AlwaysOn );
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// dealing with large areas so enable clipper
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enableClipper( true );
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// widget setup: can be focused by tab and mouse click (not wheel)
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viewport()->setFocusProxy( this );
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viewport()->setFocusPolicy( TQ_StrongFocus );
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setResizePolicy( Manual );
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setAcceptDrops( true );
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setDragAutoScroll( false );
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// set contents background to the 'base' color
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viewport()->setPaletteBackgroundColor( palette().active().base() );
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setFrameStyle( StyledPanel | Raised );
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connect( this, TQT_SIGNAL(contentsMoving(int, int)), this, TQT_SLOT(slotRequestVisiblePixmaps(int, int)) );
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}
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ThumbnailList::~ThumbnailList()
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{
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m_document->removeObserver( this );
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delete m_bookmarkOverlay;
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}
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//BEGIN DocumentObserver inherited methods
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void ThumbnailList::notifySetup( const TQValueVector< KPDFPage * > & pages, bool documentChanged )
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{
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// if there was a widget selected, save its pagenumber to restore
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// its selection (if available in the new set of pages)
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int prevPage = -1;
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if ( !documentChanged && m_selected )
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{
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prevPage = m_selected->page()->number();
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}
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// delete all the Thumbnails
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TQValueVector<ThumbnailWidget *>::iterator tIt = m_thumbnails.begin(), tEnd = m_thumbnails.end();
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for ( ; tIt != tEnd; ++tIt )
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delete *tIt;
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m_thumbnails.clear();
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m_visibleThumbnails.clear();
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m_selected = 0;
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if ( pages.count() < 1 )
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{
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resizeContents( 0, 0 );
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return;
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}
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// show pages containing hilighted text or bookmarked ones
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//RESTORE THIS int flags = Settings::filterBookmarks() ? KPDFPage::Bookmark : KPDFPage::Highlight;
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// if no page matches filter rule, then display all pages
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TQValueVector< KPDFPage * >::const_iterator pIt = pages.begin(), pEnd = pages.end();
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bool skipCheck = true;
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for ( ; pIt != pEnd ; ++pIt )
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//if ( (*pIt)->attributes() & flags )
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if ( (*pIt)->hasHighlights( SW_SEARCH_ID ) )
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skipCheck = false;
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// generate Thumbnails for the given set of pages
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int width = clipper()->width(),
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totalHeight = 0;
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for ( pIt = pages.begin(); pIt != pEnd ; ++pIt )
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//if ( skipCheck || (*pIt)->attributes() & flags )
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if ( skipCheck || (*pIt)->hasHighlights( SW_SEARCH_ID ) )
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{
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ThumbnailWidget * t = new ThumbnailWidget( viewport(), *pIt, this );
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t->setFocusProxy( this );
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// add to the scrollview
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addChild( t, 0, totalHeight );
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// add to the internal queue
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m_thumbnails.push_back( t );
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// update total height (asking widget its own height)
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t->resizeFitWidth( width );
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totalHeight += t->heightHint() + 4;
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if ( (*pIt)->number() == prevPage )
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{
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m_selected = t;
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m_selected->setSelected( true );
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}
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t->show();
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}
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// update scrollview's contents size (sets scrollbars limits)
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resizeContents( width, totalHeight );
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// request for thumbnail generation
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delayedRequestVisiblePixmaps( 200 );
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}
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void ThumbnailList::notifyViewportChanged( bool /*smoothMove*/ )
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{
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// skip notifies for the current page (already selected)
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int newPage = m_document->viewport().pageNumber;
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if ( m_selected && m_selected->pageNumber() == newPage )
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return;
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// deselect previous thumbnail
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if ( m_selected )
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m_selected->setSelected( false );
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m_selected = 0;
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// select the page with viewport and ensure it's centered in the view
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m_vectorIndex = 0;
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TQValueVector<ThumbnailWidget *>::iterator tIt = m_thumbnails.begin(), tEnd = m_thumbnails.end();
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for ( ; tIt != tEnd; ++tIt )
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{
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if ( (*tIt)->pageNumber() == newPage )
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{
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m_selected = *tIt;
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m_selected->setSelected( true );
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if ( KpdfSettings::syncThumbnailsViewport() )
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{
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int yOffset = TQMAX( visibleHeight() / 4, m_selected->height() / 2 );
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ensureVisible( 0, childY( m_selected ) + m_selected->height()/2, 0, yOffset );
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}
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break;
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}
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m_vectorIndex++;
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}
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}
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void ThumbnailList::notifyPageChanged( int pageNumber, int /*changedFlags*/ )
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{
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// only handle pixmap changed notifies (the only defined for now)
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//if ( !(changedFlags & DocumentObserver::Pixmap) )
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// return;
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// iterate over visible items: if page(pageNumber) is one of them, repaint it
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TQValueList<ThumbnailWidget *>::iterator vIt = m_visibleThumbnails.begin(), vEnd = m_visibleThumbnails.end();
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for ( ; vIt != vEnd; ++vIt )
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if ( (*vIt)->pageNumber() == pageNumber )
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{
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(*vIt)->update();
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break;
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}
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}
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void ThumbnailList::notifyContentsCleared( int changedFlags )
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{
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// if pixmaps were cleared, re-ask them
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if ( changedFlags & DocumentObserver::Pixmap )
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slotRequestVisiblePixmaps();
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}
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bool ThumbnailList::canUnloadPixmap( int pageNumber )
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{
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// if the thubnail 'pageNumber' is one of the visible ones, forbid unloading
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TQValueList<ThumbnailWidget *>::iterator vIt = m_visibleThumbnails.begin(), vEnd = m_visibleThumbnails.end();
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for ( ; vIt != vEnd; ++vIt )
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if ( (*vIt)->pageNumber() == pageNumber )
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return false;
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// if hidden permit unloading
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return true;
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}
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//END DocumentObserver inherited methods
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void ThumbnailList::updateWidgets()
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{
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// find all widgets that intersects the viewport and update them
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TQRect viewportRect( contentsX(), contentsY(), visibleWidth(), visibleHeight() );
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TQValueList<ThumbnailWidget *>::iterator vIt = m_visibleThumbnails.begin(), vEnd = m_visibleThumbnails.end();
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for ( ; vIt != vEnd; ++vIt )
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{
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ThumbnailWidget * t = *vIt;
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TQRect widgetRect( childX( t ), childY( t ), t->width(), t->height() );
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// update only the exposed area of the widget (saves pixels..)
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TQRect relativeRect = viewportRect.intersect( widgetRect );
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if ( !relativeRect.isValid() )
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continue;
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relativeRect.moveBy( -widgetRect.left(), -widgetRect.top() );
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t->update( relativeRect );
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}
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}
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void ThumbnailList::forwardRightClick( const KPDFPage * p, const TQPoint & t )
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{
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emit rightClick( p, t );
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}
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const TQPixmap * ThumbnailList::getBookmarkOverlay() const
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{
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return m_bookmarkOverlay;
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}
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void ThumbnailList::slotFilterBookmarks( bool filterOn )
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{
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// save state
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KpdfSettings::setFilterBookmarks( filterOn );
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KpdfSettings::writeConfig();
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// ask for the 'notifySetup' with a little trick (on reinsertion the
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// document sends the list again)
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m_document->removeObserver( this );
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m_document->addObserver( this );
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}
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//BEGIN widget events
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void ThumbnailList::keyPressEvent( TQKeyEvent * keyEvent )
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{
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if ( m_thumbnails.count() < 1 )
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return keyEvent->ignore();
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int nextPage = -1;
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if ( keyEvent->key() == Key_Up )
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{
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if ( !m_selected )
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nextPage = 0;
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else if ( m_vectorIndex > 0 )
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nextPage = m_thumbnails[ m_vectorIndex - 1 ]->pageNumber();
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}
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else if ( keyEvent->key() == Key_Down )
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{
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if ( !m_selected )
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nextPage = 0;
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else if ( m_vectorIndex < (int)m_thumbnails.count() - 1 )
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nextPage = m_thumbnails[ m_vectorIndex + 1 ]->pageNumber();
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}
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else if ( keyEvent->key() == Key_PageUp )
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verticalScrollBar()->subtractPage();
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else if ( keyEvent->key() == Key_PageDown )
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verticalScrollBar()->addPage();
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else if ( keyEvent->key() == Key_Home )
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nextPage = m_thumbnails[ 0 ]->pageNumber();
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else if ( keyEvent->key() == Key_End )
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nextPage = m_thumbnails[ m_thumbnails.count() - 1 ]->pageNumber();
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if ( nextPage == -1 )
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return keyEvent->ignore();
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keyEvent->accept();
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if ( m_selected )
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m_selected->setSelected( false );
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m_selected = 0;
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m_document->setViewportPage( nextPage );
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}
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void ThumbnailList::contentsMousePressEvent( TQMouseEvent * e )
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{
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if ( e->button() != Qt::LeftButton )
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return;
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int clickY = e->y();
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TQValueList<ThumbnailWidget *>::iterator vIt = m_visibleThumbnails.begin(), vEnd = m_visibleThumbnails.end();
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for ( ; vIt != vEnd; ++vIt )
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{
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ThumbnailWidget * t = *vIt;
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int childTop = childY(t);
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if ( clickY > childTop && clickY < (childTop + t->height()) )
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{
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if ( m_document->viewport().pageNumber != t->pageNumber() )
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m_document->setViewportPage( t->pageNumber() );
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break;
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}
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}
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}
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void ThumbnailList::viewportResizeEvent( TQResizeEvent * e )
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{
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if ( m_thumbnails.count() < 1 || width() < 1 )
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return;
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// if width changed resize all the Thumbnails, reposition them to the
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// right place and recalculate the contents area
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if ( e->size().width() != e->oldSize().width() )
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{
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// runs the timer avoiding a thumbnail regeneration by 'contentsMoving'
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delayedRequestVisiblePixmaps( 2000 );
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// resize and reposition items
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int totalHeight = 0,
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newWidth = e->size().width();
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TQValueVector<ThumbnailWidget *>::iterator tIt = m_thumbnails.begin(), tEnd = m_thumbnails.end();
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for ( ; tIt != tEnd; ++tIt )
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{
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ThumbnailWidget *t = *tIt;
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moveChild( t, 0, totalHeight );
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t->resizeFitWidth( newWidth );
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totalHeight += t->heightHint() + 4;
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}
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// update scrollview's contents size (sets scrollbars limits)
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resizeContents( newWidth, totalHeight );
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// ensure selected item remains visible
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if ( m_selected )
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ensureVisible( 0, childY( m_selected ) + m_selected->height()/2, 0, visibleHeight()/2 );
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}
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else if ( e->size().height() <= e->oldSize().height() )
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return;
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// invalidate the bookmark overlay
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if ( m_bookmarkOverlay )
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{
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delete m_bookmarkOverlay;
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m_bookmarkOverlay = 0;
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}
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// update Thumbnails since width has changed or height has increased
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delayedRequestVisiblePixmaps( 500 );
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}
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void ThumbnailList::dragEnterEvent( TQDragEnterEvent * ev )
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{
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ev->accept();
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}
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void ThumbnailList::dropEvent( TQDropEvent * ev )
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{
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KURL::List lst;
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if ( KURLDrag::decode( ev, lst ) )
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emit urlDropped( lst.first() );
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}
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//END widget events
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//BEGIN internal SLOTS
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void ThumbnailList::slotRequestVisiblePixmaps( int /*newContentsX*/, int newContentsY )
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{
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// if an update is already scheduled or the widget is hidden, don't proceed
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if ( (m_delayTimer && m_delayTimer->isActive()) || !isShown() )
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return;
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int vHeight = visibleHeight(),
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vOffset = newContentsY == -1 ? contentsY() : newContentsY;
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// scroll from the top to the last visible thumbnail
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m_visibleThumbnails.clear();
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TQValueList< PixmapRequest * > requestedPixmaps;
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TQValueVector<ThumbnailWidget *>::iterator tIt = m_thumbnails.begin(), tEnd = m_thumbnails.end();
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for ( ; tIt != tEnd; ++tIt )
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{
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ThumbnailWidget * t = *tIt;
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int top = childY( t ) - vOffset;
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if ( top > vHeight )
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break;
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if ( top + t->height() < 0 )
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continue;
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// add ThumbnailWidget to visible list
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m_visibleThumbnails.push_back( t );
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// if pixmap not present add it to requests
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if ( !t->page()->hasPixmap( THUMBNAILS_ID, t->pixmapWidth(), t->pixmapHeight() ) )
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{
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PixmapRequest * p = new PixmapRequest(
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THUMBNAILS_ID, t->pageNumber(), t->pixmapWidth(), t->pixmapHeight(), THUMBNAILS_PRIO, true );
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requestedPixmaps.push_back( p );
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}
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}
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// actually request pixmaps
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if ( !requestedPixmaps.isEmpty() )
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m_document->requestPixmaps( requestedPixmaps );
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}
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void ThumbnailList::slotDelayTimeout()
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{
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// resize the bookmark overlay
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delete m_bookmarkOverlay;
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int expectedWidth = contentsWidth() / 4;
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if ( expectedWidth > 10 )
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m_bookmarkOverlay = new TQPixmap( DesktopIcon( "attach", expectedWidth ) );
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else
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m_bookmarkOverlay = 0;
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// request pixmaps
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slotRequestVisiblePixmaps();
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}
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//END internal SLOTS
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void ThumbnailList::delayedRequestVisiblePixmaps( int delayMs )
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{
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if ( !m_delayTimer )
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{
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m_delayTimer = new TQTimer( this );
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connect( m_delayTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( slotDelayTimeout() ) );
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}
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m_delayTimer->start( delayMs, true );
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}
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/** ThumbnailWidget implementation **/
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ThumbnailWidget::ThumbnailWidget( TQWidget * parent, const KPDFPage * kp, ThumbnailList * tl )
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: TQWidget( parent, 0, WNoAutoErase ), m_tl( tl ), m_page( kp ),
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m_selected( false ), m_pixmapWidth( 10 ), m_pixmapHeight( 10 )
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{
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m_labelNumber = m_page->number() + 1;
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m_labelHeight = TQFontMetrics( font() ).height();
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}
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void ThumbnailWidget::resizeFitWidth( int width )
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{
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m_pixmapWidth = width - m_margin;
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m_pixmapHeight = (int)(m_page->ratio() * m_pixmapWidth);
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resize( width, heightHint() );
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}
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void ThumbnailWidget::setSelected( bool selected )
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{
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// update selected state
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if ( m_selected != selected )
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{
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m_selected = selected;
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update( 0, 0, width(), height() );
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}
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}
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void ThumbnailWidget::mouseReleaseEvent( TQMouseEvent * e )
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{
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if ( e->button() != Qt::RightButton )
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return;
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m_tl->forwardRightClick( m_page, e->globalPos() );
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}
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void ThumbnailWidget::paintEvent( TQPaintEvent * e )
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{
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int width = m_pixmapWidth + m_margin;
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int height = m_pixmapHeight + m_margin + m_labelHeight;
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TQRect clipRect = e->rect();
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if ( !clipRect.isValid() )
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return;
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TQPainter p( this );
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// draw the bottom label + highlight mark
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TQColor fillColor = m_selected ? palette().active().highlight() : palette().active().base();
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p.fillRect( 0, 0, width, height, fillColor );
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p.setPen( m_selected ? palette().active().highlightedText() : palette().active().text() );
|
|
p.drawText( 0, m_pixmapHeight + m_margin, width, m_labelHeight, TQt::AlignCenter, TQString::number( m_labelNumber ) );
|
|
|
|
// draw page outline and pixmap
|
|
if ( clipRect.top() < m_pixmapHeight + m_margin )
|
|
{
|
|
// if page is bookmarked draw a colored border
|
|
bool isBookmarked = m_page->hasBookmark();
|
|
// draw the inner rect
|
|
p.setPen( isBookmarked ? TQColor( 0xFF8000 ) : TQt::black );
|
|
p.drawRect( m_margin/2 - 1, m_margin/2 - 1, m_pixmapWidth + 2, m_pixmapHeight + 2 );
|
|
// draw the clear rect
|
|
p.setPen( isBookmarked ? TQColor( 0x804000 ) : palette().active().base() );
|
|
// draw the bottom and right shadow edges
|
|
if ( !isBookmarked )
|
|
{
|
|
int left, right, bottom, top;
|
|
left = m_margin/2 + 1;
|
|
right = m_margin/2 + m_pixmapWidth + 1;
|
|
bottom = m_pixmapHeight + m_margin/2 + 1;
|
|
top = m_margin/2 + 1;
|
|
p.setPen( TQt::gray );
|
|
p.drawLine( left, bottom, right, bottom );
|
|
p.drawLine( right, top, right, bottom );
|
|
}
|
|
|
|
// draw the page using the shared PagePainter class
|
|
p.translate( m_margin/2, m_margin/2 );
|
|
clipRect.moveBy( -m_margin/2, -m_margin/2 );
|
|
clipRect = clipRect.intersect( TQRect( 0, 0, m_pixmapWidth, m_pixmapHeight ) );
|
|
if ( clipRect.isValid() )
|
|
{
|
|
int flags = PagePainter::Accessibility | PagePainter::Highlights;
|
|
PagePainter::paintPageOnPainter( m_page, THUMBNAILS_ID, flags, &p,
|
|
clipRect, m_pixmapWidth, m_pixmapHeight );
|
|
}
|
|
|
|
// draw the bookmark overlay on the top-right corner
|
|
const TQPixmap * bookmarkPixmap = m_tl->getBookmarkOverlay();
|
|
if ( isBookmarked && bookmarkPixmap )
|
|
{
|
|
int pixW = bookmarkPixmap->width(),
|
|
pixH = bookmarkPixmap->height();
|
|
clipRect = clipRect.intersect( TQRect( m_pixmapWidth - pixW, 0, pixW, pixH ) );
|
|
if ( clipRect.isValid() )
|
|
p.drawPixmap( m_pixmapWidth - pixW, -pixH/8, *bookmarkPixmap );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/** ThumbnailsController implementation **/
|
|
|
|
#define FILTERB_ID 1
|
|
|
|
ThumbnailController::ThumbnailController( TQWidget * parent, ThumbnailList * list )
|
|
: TDEToolBar( parent, "ThumbsControlBar" )
|
|
{
|
|
// change toolbar appearance
|
|
setMargin( 3 );
|
|
setFlat( true );
|
|
setIconSize( 16 );
|
|
setMovingEnabled( false );
|
|
|
|
// insert a togglebutton [show only bookmarked pages]
|
|
//insertSeparator();
|
|
insertButton( "bookmark", FILTERB_ID, TQT_SIGNAL( toggled( bool ) ),
|
|
TQT_TQOBJECT(list), TQT_SLOT( slotFilterBookmarks( bool ) ),
|
|
true, i18n( "Show bookmarked pages only" ) );
|
|
setToggle( FILTERB_ID );
|
|
setButton( FILTERB_ID, KpdfSettings::filterBookmarks() );
|
|
//insertLineSeparator();
|
|
}
|
|
|
|
|
|
#include "thumbnaillist.moc"
|