Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 327 insertions, 0 deletions

diff --git a/kpdf/core/page.cpp b/kpdf/core/page.cpp
new file mode 100644
index 00000000..e6a847a8
--- /dev/null
+++ b/kpdf/core/page.cpp
@@ -0,0 +1,327 @@
+/***************************************************************************
+ *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+// qt/kde includes
+#include <qpixmap.h>
+#include <qstring.h>
+#include <qmap.h>
+#include <kdebug.h>
+
+// local includes
+#include "page.h"
+#include "pagetransition.h"
+#include "link.h"
+#include "conf/settings.h"
+#include "xpdf/TextOutputDev.h"
+
+
+/** class KPDFPage **/
+
+KPDFPage::KPDFPage( uint page, float w, float h, int r )
+    : m_number( page ), m_rotation( r ), m_width( w ), m_height( h ),
+    m_bookmarked( false ), m_text( 0 ), m_transition( 0 )
+{
+    // if landscape swap width <-> height (rotate 90deg CCW)
+    if ( r == 90 || r == 270 )
+    {
+        m_width = h;
+        m_height = w;
+    }
+    // avoid Division-By-Zero problems in the program
+    if ( m_width <= 0 )
+        m_width = 1;
+    if ( m_height <= 0 )
+        m_height = 1;
+}
+
+KPDFPage::~KPDFPage()
+{
+    deletePixmapsAndRects();
+    deleteHighlights();
+    delete m_text;
+    delete m_transition;
+}
+
+
+bool KPDFPage::hasPixmap( int id, int width, int height ) const
+{
+    if ( !m_pixmaps.contains( id ) )
+        return false;
+    if ( width == -1 || height == -1 )
+        return true;
+    QPixmap * p = m_pixmaps[ id ];
+    return p ? ( p->width() == width && p->height() == height ) : false;
+}
+
+bool KPDFPage::hasSearchPage() const
+{
+    return m_text != 0;
+}
+
+bool KPDFPage::hasBookmark() const
+{
+    return m_bookmarked;
+}
+
+bool KPDFPage::hasObjectRect( double x, double y ) const
+{
+    if ( m_rects.count() < 1 )
+        return false;
+    QValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
+    for ( ; it != end; ++it )
+        if ( (*it)->contains( x, y ) )
+            return true;
+    return false;
+}
+
+bool KPDFPage::hasHighlights( int s_id ) const
+{
+    // simple case: have no highlights
+    if ( m_highlights.isEmpty() )
+        return false;
+    // simple case: we have highlights and no id to match
+    if ( s_id == -1 )
+        return true;
+    // iterate on the highlights list to find an entry by id
+    QValueList< HighlightRect * >::const_iterator it = m_highlights.begin(), end = m_highlights.end();
+    for ( ; it != end; ++it )
+        if ( (*it)->s_id == s_id )
+            return true;
+    return false;
+}
+
+bool KPDFPage::hasTransition() const
+{
+    return m_transition != 0;
+}
+
+
+NormalizedRect * KPDFPage::findText( const QString & text, bool strictCase, NormalizedRect * lastRect ) const
+{
+    if ( text.isEmpty() )
+        return 0;
+
+    // create a xpf's Unicode (unsigned int) array for the given text
+    const QChar * str = text.unicode();
+    int len = text.length();
+    QMemArray<Unicode> u(len);
+    for (int i = 0; i < len; ++i)
+        u[i] = str[i].unicode();
+
+    // find out the direction of search
+    enum SearchDir { FromTop, NextMatch, PrevMatch } dir = lastRect ? NextMatch : FromTop;
+    double sLeft, sTop, sRight, sBottom;
+    if ( dir == NextMatch )
+    {
+        sLeft = lastRect->left * m_width;
+        sTop = lastRect->top * m_height;
+        sRight = lastRect->right * m_width;
+        sBottom = lastRect->bottom * m_height;
+    }
+
+    // this loop is only for 'bad case' matches
+    bool found = false;
+    while ( !found )
+    {
+        if ( dir == FromTop )
+            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gTrue, gFalse, gFalse, strictCase, gFalse, &sLeft, &sTop, &sRight, &sBottom );
+        else if ( dir == NextMatch )
+            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gFalse, gTrue, gTrue, gFalse, strictCase, gFalse, &sLeft, &sTop, &sRight, &sBottom );
+        else if ( dir == PrevMatch )
+            // FIXME: this doesn't work as expected (luckily backward search isn't yet used)
+	    // TODO: check if the new xpdf 3.01 code is able of searching backwards
+            found = m_text->findText( const_cast<Unicode*>(static_cast<const Unicode*>(u)), len, gTrue, gFalse, gFalse, gTrue, strictCase, gTrue, &sLeft, &sTop, &sRight, &sBottom );
+
+        // if not found (even in case unsensitive search), terminate
+        if ( !found )
+            break;
+    }
+
+    // if the page was found, return a new normalizedRect
+    if ( found )
+        return new NormalizedRect( sLeft / m_width, sTop / m_height, sRight / m_width, sBottom / m_height );
+    return 0;
+}
+
+const QString KPDFPage::getText( const NormalizedRect & rect ) const
+{
+    if ( !m_text )
+        return QString::null;
+    int left = (int)( rect.left * m_width ),
+        top = (int)( rect.top * m_height ),
+        right = (int)( rect.right * m_width ),
+        bottom = (int)( rect.bottom * m_height );
+    GString * text = m_text->getText( left, top, right, bottom );
+    QString result = QString::fromUtf8( text->getCString() );
+    delete text;
+    return result; 
+}
+
+const ObjectRect * KPDFPage::hasObject( ObjectRect::ObjectType type, double x, double y ) const
+{
+    QValueList< ObjectRect * >::const_iterator it = m_rects.begin(), end = m_rects.end();
+    for ( ; it != end; ++it )
+        if ( (*it)->contains( x, y ) )
+            if ((*it)->objectType() == type) return *it;
+    return 0;
+}
+
+const KPDFPageTransition * KPDFPage::getTransition() const
+{
+    return m_transition;
+}
+
+
+void KPDFPage::setPixmap( int id, QPixmap * pixmap )
+{
+    if ( m_pixmaps.contains( id ) )
+        delete m_pixmaps[id];
+    m_pixmaps[id] = pixmap;
+}
+
+void KPDFPage::setSearchPage( TextPage * tp )
+{
+    delete m_text;
+    m_text = tp;
+}
+
+void KPDFPage::setBookmark( bool state )
+{
+    m_bookmarked = state;
+}
+
+void KPDFPage::setObjectRects( const QValueList< ObjectRect * > rects )
+{
+    QValueList< ObjectRect * >::iterator it = m_rects.begin(), end = m_rects.end();
+    for ( ; it != end; ++it )
+        delete *it;
+    m_rects = rects;
+}
+
+void KPDFPage::setHighlight( int s_id, NormalizedRect * &rect, const QColor & color )
+{
+    // create a HighlightRect descriptor taking values from params
+    HighlightRect * hr = new HighlightRect();
+    hr->s_id = s_id;
+    hr->color = color;
+    hr->left = rect->left;
+    hr->top = rect->top;
+    hr->right = rect->right;
+    hr->bottom = rect->bottom;
+    // append the HighlightRect to the list
+    m_highlights.append( hr );
+    // delete old object and change reference
+    delete rect;
+    rect = hr;
+}
+
+void KPDFPage::setTransition( KPDFPageTransition * transition )
+{
+    delete m_transition;
+    m_transition = transition;
+}
+
+void KPDFPage::deletePixmap( int id )
+{
+    if ( m_pixmaps.contains( id ) )
+    {
+        delete m_pixmaps[ id ];
+        m_pixmaps.remove( id );
+    }
+}
+
+void KPDFPage::deletePixmapsAndRects()
+{
+    // delete all stored pixmaps
+    QMap<int,QPixmap *>::iterator it = m_pixmaps.begin(), end = m_pixmaps.end();
+    for ( ; it != end; ++it )
+        delete *it;
+    m_pixmaps.clear();
+    // delete ObjectRects
+    QValueList< ObjectRect * >::iterator rIt = m_rects.begin(), rEnd = m_rects.end();
+    for ( ; rIt != rEnd; ++rIt )
+        delete *rIt;
+    m_rects.clear();
+}
+
+void KPDFPage::deleteHighlights( int s_id )
+{
+    // delete highlights by ID
+    QValueList< HighlightRect * >::iterator it = m_highlights.begin(), end = m_highlights.end();
+    while ( it != end )
+    {
+        HighlightRect * highlight = *it;
+        if ( s_id == -1 || highlight->s_id == s_id )
+        {
+            it = m_highlights.remove( it );
+            delete highlight;
+        }
+        else
+            ++it;
+    }
+}
+
+
+/** class NormalizedRect **/
+
+NormalizedRect::NormalizedRect()
+    : left( 0.0 ), top( 0.0 ), right( 0.0 ), bottom( 0.0 ) {}
+
+NormalizedRect::NormalizedRect( double l, double t, double r, double b )
+    // note: check for swapping coords?
+    : left( l ), top( t ), right( r ), bottom( b ) {}
+
+NormalizedRect::NormalizedRect( const QRect & r, double xScale, double yScale )
+    : left( (double)r.left() / xScale ), top( (double)r.top() / yScale ),
+    right( (double)r.right() / xScale ), bottom( (double)r.bottom() / yScale ) {}
+
+bool NormalizedRect::contains( double x, double y ) const
+{
+    return x >= left && x <= right && y >= top && y <= bottom;
+}
+
+bool NormalizedRect::intersects( const NormalizedRect & r ) const
+{
+    return (r.left < right) && (r.right > left) && (r.top < bottom) && (r.bottom > top);
+}
+
+bool NormalizedRect::intersects( double l, double t, double r, double b ) const
+{
+    return (l < right) && (r > left) && (t < bottom) && (b > top);
+}
+
+QRect NormalizedRect::geometry( int xScale, int yScale ) const
+{
+    int l = (int)( left * xScale ),
+        t = (int)( top * yScale ),
+        r = (int)( right * xScale ),
+        b = (int)( bottom * yScale );
+    return QRect( l, t, r - l + 1, b - t + 1 );
+}
+
+
+/** class ObjectRect **/
+
+ObjectRect::ObjectRect( double l, double t, double r, double b, ObjectType type, void * pnt )
+    // assign coordinates swapping them if negative width or height
+    : NormalizedRect( r > l ? l : r, b > t ? t : b, r > l ? r : l, b > t ? b : t ),
+    m_objectType( type ), m_pointer( pnt )
+{
+}
+
+ObjectRect::~ObjectRect()
+{
+    if ( !m_pointer )
+        return;
+
+    if ( m_objectType == Link )
+        delete static_cast<KPDFLink*>( m_pointer );
+    else
+        kdDebug() << "Object deletion not implemented for type '" << m_objectType << "' ." << endl;
+}