mirror of
https://invent.kde.org/graphics/okular
synced 2024-11-05 18:34:53 +00:00
337 lines
9.7 KiB
C++
337 lines
9.7 KiB
C++
/***************************************************************************
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* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it> *
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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 <qpixmap.h>
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#include <qstring.h>
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#include <qmap.h>
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#include <kdebug.h>
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// local includes
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#include "page.h"
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#include "pagetransition.h"
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#include "link.h"
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#include "conf/settings.h"
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#include "xpdf/TextOutputDev.h"
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/** class KPDFPage **/
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KPDFPage::KPDFPage( uint page, float w, float h, int r )
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: m_number( page ), m_rotation( r ), m_width( w ), m_height( h ),
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m_bookmarked( false ), m_text( 0 ), m_transition( 0 )
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{
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// if landscape swap width <-> height (rotate 90deg CCW)
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if ( r == 90 || r == 270 )
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{
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m_width = h;
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m_height = w;
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}
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// avoid Division-By-Zero problems in the program
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if ( m_width <= 0 )
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m_width = 1;
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if ( m_height <= 0 )
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m_height = 1;
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}
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KPDFPage::~KPDFPage()
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{
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deletePixmapsAndRects();
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deleteHighlights();
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delete m_text;
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delete m_transition;
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}
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bool KPDFPage::hasPixmap( int id, int width, int height ) const
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{
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if ( !m_pixmaps.contains( id ) )
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return false;
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if ( width == -1 || height == -1 )
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return true;
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QPixmap * p = m_pixmaps[ id ];
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return p ? ( p->width() == width && p->height() == height ) : false;
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}
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bool KPDFPage::hasSearchPage() const
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{
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return m_text != 0;
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}
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bool KPDFPage::hasBookmark() const
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{
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return m_bookmarked;
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}
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bool KPDFPage::hasObjectRect( double x, double y ) const
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{
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if ( m_rects.count() < 1 )
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return false;
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QValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
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for ( ; it != end; ++it )
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if ( (*it)->contains( x, y ) )
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return true;
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return false;
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}
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bool KPDFPage::hasHighlights( int s_id ) const
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{
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// simple case: have no highlights
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if ( m_highlights.isEmpty() )
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return false;
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// simple case: we have highlights and no id to match
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if ( s_id == -1 )
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return true;
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// iterate on the highlights list to find an entry by id
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QValueList< HighlightRect * >::const_iterator it = m_highlights.begin(), end = m_highlights.end();
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for ( ; it != end; ++it )
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if ( (*it)->s_id == s_id )
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return true;
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return false;
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}
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bool KPDFPage::hasTransition() const
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{
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return m_transition != 0;
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}
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NormalizedRect * KPDFPage::findText( const QString & text, bool strictCase, NormalizedRect * lastRect ) const
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{
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if ( text.isEmpty() )
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return 0;
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// create a xpf's Unicode (unsigned int) array for the given text
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const QChar * str = text.unicode();
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int len = text.length();
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QMemArray<Unicode> u(len);
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for (int i = 0; i < len; ++i)
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u[i] = str[i].unicode();
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// find out the direction of search
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enum SearchDir { FromTop, NextMatch, PrevMatch } dir = lastRect ? NextMatch : FromTop;
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double sLeft, sTop, sRight, sBottom;
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if ( dir == NextMatch )
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{
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sLeft = lastRect->left * m_width;
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sTop = lastRect->top * m_height;
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sRight = lastRect->right * m_width;
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sBottom = lastRect->bottom * m_height;
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}
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// this loop is only for 'bad case' matches
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bool found = false;
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while ( !found )
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{
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if ( dir == FromTop )
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found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gTrue, gFalse, gFalse, &sLeft, &sTop, &sRight, &sBottom );
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else if ( dir == NextMatch )
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found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gFalse, gTrue, gTrue, gFalse, &sLeft, &sTop, &sRight, &sBottom );
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else if ( dir == PrevMatch )
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// FIXME: this doesn't work as expected (luckily backward search isn't yet used)
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found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gFalse, gFalse, gTrue, &sLeft, &sTop, &sRight, &sBottom );
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// if not found (even in case unsensitive search), terminate
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if ( !found )
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break;
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// check for case sensitivity
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if ( strictCase )
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{
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// since we're in 'Case sensitive' mode, check if words are identical
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GString * realText = m_text->getText( sLeft, sTop, sRight, sBottom );
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found = QString::fromUtf8( realText->getCString() ) == text;
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if ( !found && dir == FromTop )
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dir = NextMatch;
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delete realText;
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}
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}
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// if the page was found, return a new normalizedRect
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if ( found )
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return new NormalizedRect( sLeft / m_width, sTop / m_height, sRight / m_width, sBottom / m_height );
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return 0;
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}
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const QString KPDFPage::getText( const NormalizedRect & rect ) const
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{
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if ( !m_text )
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return QString::null;
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int left = (int)( rect.left * m_width ),
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top = (int)( rect.top * m_height ),
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right = (int)( rect.right * m_width ),
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bottom = (int)( rect.bottom * m_height );
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GString * text = m_text->getText( left, top, right, bottom );
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QString result = QString::fromUtf8( text->getCString() );
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delete text;
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return result;
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}
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const ObjectRect * KPDFPage::getObjectRect( double x, double y ) const
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{
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QValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
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for ( ; it != end; ++it )
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if ( (*it)->contains( x, y ) )
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return *it;
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return 0;
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}
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const KPDFPageTransition * KPDFPage::getTransition() const
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{
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return m_transition;
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}
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void KPDFPage::setPixmap( int id, QPixmap * pixmap )
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{
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if ( m_pixmaps.contains( id ) )
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delete m_pixmaps[id];
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m_pixmaps[id] = pixmap;
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}
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void KPDFPage::setSearchPage( TextPage * tp )
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{
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delete m_text;
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m_text = tp;
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}
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void KPDFPage::setBookmark( bool state )
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{
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m_bookmarked = state;
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}
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void KPDFPage::setObjectRects( const QValueList< ObjectRect * > rects )
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{
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QValueList< ObjectRect * >::iterator it = m_rects.begin(), end = m_rects.end();
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for ( ; it != end; ++it )
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delete *it;
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m_rects = rects;
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}
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void KPDFPage::setHighlight( int s_id, NormalizedRect * &rect, const QColor & color )
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{
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// create a HighlightRect descriptor taking values from params
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HighlightRect * hr = new HighlightRect();
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hr->s_id = s_id;
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hr->color = color;
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hr->left = rect->left;
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hr->top = rect->top;
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hr->right = rect->right;
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hr->bottom = rect->bottom;
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// append the HighlightRect to the list
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m_highlights.append( hr );
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// delete old object and change reference
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delete rect;
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rect = hr;
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}
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void KPDFPage::setTransition( KPDFPageTransition * transition )
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{
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delete m_transition;
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m_transition = transition;
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}
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void KPDFPage::deletePixmap( int id )
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{
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if ( m_pixmaps.contains( id ) )
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{
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delete m_pixmaps[ id ];
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m_pixmaps.remove( id );
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}
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}
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void KPDFPage::deletePixmapsAndRects()
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{
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// delete all stored pixmaps
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QMap<int,QPixmap *>::iterator it = m_pixmaps.begin(), end = m_pixmaps.end();
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for ( ; it != end; ++it )
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delete *it;
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m_pixmaps.clear();
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// delete ObjectRects
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QValueList< ObjectRect * >::iterator rIt = m_rects.begin(), rEnd = m_rects.end();
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for ( ; rIt != rEnd; ++rIt )
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delete *rIt;
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m_rects.clear();
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}
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void KPDFPage::deleteHighlights( int s_id )
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{
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// delete highlights by ID
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QValueList< HighlightRect * >::iterator it = m_highlights.begin(), end = m_highlights.end();
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while ( it != end )
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{
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HighlightRect * highlight = *it;
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if ( s_id == -1 || highlight->s_id == s_id )
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{
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it = m_highlights.remove( it );
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delete highlight;
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}
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else
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++it;
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}
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}
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/** class NormalizedRect **/
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NormalizedRect::NormalizedRect()
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: left( 0.0 ), top( 0.0 ), right( 0.0 ), bottom( 0.0 ) {}
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NormalizedRect::NormalizedRect( double l, double t, double r, double b )
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// note: check for swapping coords?
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: left( l ), top( t ), right( r ), bottom( b ) {}
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NormalizedRect::NormalizedRect( const QRect & r, double xScale, double yScale )
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: left( (double)r.left() / xScale ), top( (double)r.top() / yScale ),
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right( (double)r.right() / xScale ), bottom( (double)r.bottom() / yScale ) {}
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bool NormalizedRect::contains( double x, double y ) const
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{
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return x >= left && x <= right && y >= top && y <= bottom;
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}
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bool NormalizedRect::intersects( const NormalizedRect & r ) const
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{
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return (r.left < right) && (r.right > left) && (r.top < bottom) && (r.bottom > top);
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}
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bool NormalizedRect::intersects( double l, double t, double r, double b ) const
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{
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return (l < right) && (r > left) && (t < bottom) && (b > top);
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}
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QRect NormalizedRect::geometry( int xScale, int yScale ) const
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{
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int l = (int)( left * xScale ),
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t = (int)( top * yScale ),
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r = (int)( right * xScale ),
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b = (int)( bottom * yScale );
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return QRect( l, t, r - l + 1, b - t + 1 );
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}
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/** class ObjectRect **/
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ObjectRect::ObjectRect( double l, double t, double r, double b, ObjectType type, void * pnt )
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// assign coordinates swapping them if negative width or height
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: NormalizedRect( r > l ? l : r, b > t ? t : b, r > l ? r : l, b > t ? b : t ),
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m_objectType( type ), m_pointer( pnt )
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{
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}
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ObjectRect::~ObjectRect()
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{
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if ( !m_pointer )
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return;
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if ( m_objectType == Link )
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delete static_cast<KPDFLink*>( m_pointer );
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else
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kdDebug() << "Object deletion not implemented for type '" << m_objectType << "' ." << endl;
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}
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