okular/ui/pageitemdelegate.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Pino Toscano <pino@kde.org>                     *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  ***************************************************************************/
   9
  10 #include "pageitemdelegate.h"
  11
  12 // qt/kde includes
  13 #include <qapplication.h>
  14 #include <QItemDelegate>
  15 #include <QModelIndex>
  16 #include <QTextDocument>
  17 #include <qvariant.h>
  18
  19 // local includes
  20 #include "settings.h"
  21
  22 #define PAGEITEMDELEGATE_INTERNALMARGIN 3
  23
  24 class PageItemDelegate::Private
  25 {
  26     public:
  27         Private()
  28         {}
  29
  30         QModelIndex index;
  31 };
  32
  33 PageItemDelegate::PageItemDelegate( QObject * parent )
  34     : QItemDelegate( parent ), d( new Private )
  35 {
  36 }
  37
  38 PageItemDelegate::~PageItemDelegate()
  39 {
  40     delete d;
  41 }
  42
  43 void PageItemDelegate::paint( QPainter *painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
  44 {
  45     d->index = index;
  46     QItemDelegate::paint( painter, option, index );
  47 }
  48
  49 void PageItemDelegate::drawDisplay( QPainter *painter, const QStyleOptionViewItem & option, const QRect & rect, const QString & text ) const
  50 {
  51     QVariant pageVariant = d->index.data( PageRole );
  52     QVariant labelVariant = d->index.data( PageLabelRole );
  53     if ( ( labelVariant.type() != QVariant::String && !pageVariant.canConvert( QVariant::String ) ) || !Okular::Settings::tocPageColumn() )
  54     {
  55         QItemDelegate::drawDisplay( painter, option, rect, text );
  56         return;
  57     }
  58     QString label = labelVariant.toString();
  59     QString page = label.isEmpty() ? pageVariant.toString() : label;
  60     QTextDocument document;
  61     document.setPlainText( page );
  62     document.setDefaultFont( option.font );
  63     int margindelta = QApplication::style()->pixelMetric( QStyle::PM_FocusFrameHMargin ) + 1;
  64     int pageRectWidth = (int)document.size().width();
  65     QRect newRect( rect );
  66     QRect pageRect( rect );
  67     pageRect.setWidth( pageRectWidth + 2 * margindelta );
  68     newRect.setWidth( newRect.width() - pageRectWidth - PAGEITEMDELEGATE_INTERNALMARGIN );
  69     if ( option.direction == Qt::RightToLeft )
  70         newRect.translate( pageRectWidth + PAGEITEMDELEGATE_INTERNALMARGIN, 0 );
  71     else
  72         pageRect.translate( newRect.width() + PAGEITEMDELEGATE_INTERNALMARGIN - 2 * margindelta, 0 );
  73     QItemDelegate::drawDisplay( painter, option, newRect, text );
  74     QStyleOptionViewItemV2 newoption( option );
  75     newoption.displayAlignment = ( option.displayAlignment & ~Qt::AlignHorizontal_Mask ) | Qt::AlignRight;
  76     QItemDelegate::drawDisplay( painter, newoption, pageRect, page );
  77 }
  78
  79 #include "pageitemdelegate.moc"