mirror of
https://invent.kde.org/graphics/okular
synced 2024-07-17 02:37:04 +00:00
623 lines
19 KiB
C++
623 lines
19 KiB
C++
/***************************************************************************
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* Copyright (C) 2007 by Pino Toscano <pino@kde.org> *
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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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#include "sidebar.h"
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#include <qabstractitemdelegate.h>
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#include <qaction.h>
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#include <qevent.h>
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#include <qfont.h>
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#include <qfontmetrics.h>
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#include <qlabel.h>
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#include <qlayout.h>
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#include <qlist.h>
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#include <qlistwidget.h>
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#include <qpainter.h>
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#include <qscrollbar.h>
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#include <qsplitter.h>
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#include <qstackedwidget.h>
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#include <klocale.h>
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#include <kmenu.h>
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#include "settings.h"
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static const int SidebarItemType = QListWidgetItem::UserType + 1;
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/* List item representing a sidebar entry. */
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class SidebarItem : public QListWidgetItem
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{
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public:
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SidebarItem( QWidget* w, const QIcon &icon, const QString &text )
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: QListWidgetItem( 0, SidebarItemType ),
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m_widget( w )
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{
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setFlags( Qt::ItemIsSelectable | Qt::ItemIsEnabled );
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setIcon( icon );
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setText( text );
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setToolTip( text );
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}
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QWidget* widget() const
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{
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return m_widget;
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}
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private:
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QWidget *m_widget;
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};
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/* A simple delegate to paint the icon of each item */
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#define ITEM_MARGIN_LEFT 5
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#define ITEM_MARGIN_TOP 5
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#define ITEM_MARGIN_RIGHT 5
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#define ITEM_MARGIN_BOTTOM 5
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#define ITEM_PADDING 5
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class SidebarDelegate : public QAbstractItemDelegate
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{
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public:
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SidebarDelegate( QObject *parent = 0 );
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~SidebarDelegate();
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void setShowText( bool show );
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bool isTextShown() const;
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// from QAbstractItemDelegate
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void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
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QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const;
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private:
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bool m_showText;
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};
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SidebarDelegate::SidebarDelegate( QObject *parent )
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: QAbstractItemDelegate( parent ), m_showText( true )
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{
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}
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SidebarDelegate::~SidebarDelegate()
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{
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}
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void SidebarDelegate::setShowText( bool show )
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{
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m_showText = show;
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}
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bool SidebarDelegate::isTextShown() const
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{
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return m_showText;
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}
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void SidebarDelegate::paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
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{
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QBrush backBrush;
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QColor foreColor;
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bool disabled = false;
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if ( !( option.state & QStyle::State_Enabled ) )
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{
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backBrush = option.palette.brush( QPalette::Disabled, QPalette::Base );
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foreColor = option.palette.color( QPalette::Disabled, QPalette::Text );
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disabled = true;
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}
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else if ( option.state & ( QStyle::State_HasFocus | QStyle::State_Selected ) )
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{
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backBrush = option.palette.brush( QPalette::Highlight );
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foreColor = option.palette.color( QPalette::HighlightedText );
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}
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else if ( option.state & QStyle::State_MouseOver )
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{
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backBrush = option.palette.color( QPalette::Highlight ).light( 115 );
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foreColor = option.palette.color( QPalette::HighlightedText );
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}
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else /*if ( option.state & QStyle::State_Enabled )*/
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{
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backBrush = option.palette.brush( QPalette::Base );
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foreColor = option.palette.color( QPalette::Text );
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}
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painter->fillRect( option.rect, backBrush );
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QIcon icon = index.data( Qt::DecorationRole ).value< QIcon >();
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if ( !icon.isNull() )
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{
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QPoint iconpos(
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( option.rect.width() - option.decorationSize.width() ) / 2,
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ITEM_MARGIN_TOP
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);
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iconpos += option.rect.topLeft();
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QIcon::Mode iconmode = disabled ? QIcon::Disabled : QIcon::Normal;
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painter->drawPixmap( iconpos, icon.pixmap( option.decorationSize, iconmode ) );
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}
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if ( m_showText )
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{
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QString text = index.data( Qt::DisplayRole ).toString();
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QRect fontBoundaries = QFontMetrics( option.font ).boundingRect( text );
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QPoint textPos(
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ITEM_MARGIN_LEFT + ( option.rect.width() - ITEM_MARGIN_LEFT - ITEM_MARGIN_RIGHT - fontBoundaries.width() ) / 2,
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ITEM_MARGIN_TOP + option.decorationSize.height() + ITEM_PADDING
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);
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fontBoundaries.translate( -fontBoundaries.topLeft() );
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fontBoundaries.translate( textPos );
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fontBoundaries.translate( option.rect.topLeft() );
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painter->setPen( foreColor );
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painter->drawText( fontBoundaries, Qt::AlignCenter, text );
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}
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}
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QSize SidebarDelegate::sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const
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{
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QSize baseSize( option.decorationSize.width(), option.decorationSize.height() );
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if ( m_showText )
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{
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QRect fontBoundaries = QFontMetrics( option.font ).boundingRect( index.data( Qt::DisplayRole ).toString() );
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baseSize.setWidth( qMax( fontBoundaries.width(), baseSize.width() ) );
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baseSize.setHeight( baseSize.height() + fontBoundaries.height() + ITEM_PADDING );
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}
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return baseSize + QSize( ITEM_MARGIN_LEFT + ITEM_MARGIN_RIGHT, ITEM_MARGIN_TOP + ITEM_MARGIN_BOTTOM );
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}
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/* A custom list widget that ignores the events for disabled items */
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class SidebarListWidget : public QListWidget
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{
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public:
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SidebarListWidget( QWidget *parent = 0 );
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~SidebarListWidget();
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protected:
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// from QListWidget
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void mouseDoubleClickEvent( QMouseEvent *event );
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void mouseMoveEvent( QMouseEvent *event );
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void mousePressEvent( QMouseEvent *event );
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void mouseReleaseEvent( QMouseEvent *event );
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QModelIndex moveCursor( QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers );
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};
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SidebarListWidget::SidebarListWidget( QWidget *parent )
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: QListWidget( parent )
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{
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}
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SidebarListWidget::~SidebarListWidget()
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{
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}
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void SidebarListWidget::mouseDoubleClickEvent( QMouseEvent *event )
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{
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QModelIndex index = indexAt( event->pos() );
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if ( index.isValid() && !( index.flags() & Qt::ItemIsSelectable ) )
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return;
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QListWidget::mouseDoubleClickEvent( event );
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}
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void SidebarListWidget::mouseMoveEvent( QMouseEvent *event )
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{
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QModelIndex index = indexAt( event->pos() );
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if ( index.isValid() && !( index.flags() & Qt::ItemIsSelectable ) )
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return;
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QListWidget::mouseMoveEvent( event );
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}
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void SidebarListWidget::mousePressEvent( QMouseEvent *event )
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{
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QModelIndex index = indexAt( event->pos() );
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if ( index.isValid() && !( index.flags() & Qt::ItemIsSelectable ) )
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return;
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QListWidget::mousePressEvent( event );
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}
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void SidebarListWidget::mouseReleaseEvent( QMouseEvent *event )
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{
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QModelIndex index = indexAt( event->pos() );
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if ( index.isValid() && !( index.flags() & Qt::ItemIsSelectable ) )
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return;
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QListWidget::mouseReleaseEvent( event );
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}
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QModelIndex SidebarListWidget::moveCursor( QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers )
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{
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Q_UNUSED( modifiers )
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QModelIndex oldindex = currentIndex();
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QModelIndex newindex = oldindex;
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switch ( cursorAction )
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{
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case MoveUp:
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case MovePrevious:
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{
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int row = oldindex.row() - 1;
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while ( row > -1 && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) --row;
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if ( row > -1 )
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newindex = model()->index( row, 0 );
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break;
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}
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case MoveDown:
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case MoveNext:
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{
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int row = oldindex.row() + 1;
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int max = model()->rowCount();
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while ( row < max && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) ++row;
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if ( row < max )
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newindex = model()->index( row, 0 );
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break;
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}
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case MoveHome:
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case MovePageUp:
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{
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int row = 0;
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while ( row < oldindex.row() && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) ++row;
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if ( row < oldindex.row() )
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newindex = model()->index( row, 0 );
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break;
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}
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case MoveEnd:
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case MovePageDown:
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{
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int row = model()->rowCount() - 1;
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while ( row > oldindex.row() && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) --row;
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if ( row > oldindex.row() )
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newindex = model()->index( row, 0 );
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break;
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}
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// no navigation possible for these
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case MoveLeft:
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case MoveRight:
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break;
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}
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// dirty hack to change item when the key cursor changes item
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if ( oldindex != newindex )
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{
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emit itemClicked( itemFromIndex( newindex ) );
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}
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return newindex;
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}
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/* Private storage. */
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class Sidebar::Private
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{
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public:
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Private()
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: sideWidget( 0 ), bottomWidget( 0 ), splitterSizesSet( false ),
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itemsHeight( 0 )
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{
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}
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void adjustListSize( bool recalc, bool expand = true );
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SidebarListWidget *list;
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QSplitter *splitter;
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QStackedWidget *stack;
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QWidget *sideContainer;
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QLabel *sideTitle;
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QVBoxLayout *vlay;
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QWidget *sideWidget;
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QWidget *bottomWidget;
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QList< SidebarItem* > pages;
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bool splitterSizesSet;
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int itemsHeight;
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SidebarDelegate *sideDelegate;
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};
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void Sidebar::Private::adjustListSize( bool recalc, bool expand )
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{
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QRect bottomElemRect(
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QPoint( 0, 0 ),
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list->sizeHintForIndex( list->model()->index( list->count() - 1, 0 ) )
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);
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if ( recalc )
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{
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int w = 0;
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for ( int i = 0; i < list->count(); ++i )
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{
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QSize s = list->sizeHintForIndex( list->model()->index( i, 0 ) );
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if ( s.width() > w )
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w = s.width();
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}
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bottomElemRect.setWidth( w );
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}
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bottomElemRect.translate( 0, bottomElemRect.height() * ( list->count() - 1 ) );
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itemsHeight = bottomElemRect.height() * list->count();
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list->setMinimumHeight( itemsHeight + list->frameWidth() * 2 );
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int curWidth = list->minimumWidth();
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int newWidth = expand
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? qMax( bottomElemRect.width() + list->frameWidth() * 2, curWidth )
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: qMin( bottomElemRect.width() + list->frameWidth() * 2, curWidth );
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list->setFixedWidth( newWidth );
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}
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Sidebar::Sidebar( QWidget *parent )
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: QWidget( parent ), d( new Private )
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{
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QHBoxLayout *mainlay = new QHBoxLayout( this );
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mainlay->setMargin( 0 );
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d->list = new SidebarListWidget( this );
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mainlay->addWidget( d->list );
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d->list->setMouseTracking( true );
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d->list->viewport()->setAttribute( Qt::WA_Hover );
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d->sideDelegate = new SidebarDelegate( d->list );
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d->sideDelegate->setShowText( Okular::Settings::sidebarShowText() );
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d->list->setItemDelegate( d->sideDelegate );
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d->list->setUniformItemSizes( true );
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d->list->setSelectionMode( QAbstractItemView::SingleSelection );
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int iconsize = Okular::Settings::sidebarIconSize();
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d->list->setIconSize( QSize( iconsize, iconsize ) );
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d->list->setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
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d->list->setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
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d->list->setContextMenuPolicy( Qt::CustomContextMenu );
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QPalette pal = d->list->palette();
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pal.setBrush( QPalette::Base, pal.brush( QPalette::Window ) );
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d->list->setPalette( pal );
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d->splitter = new QSplitter( this );
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mainlay->addWidget( d->splitter );
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d->splitter->setOpaqueResize( true );
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d->splitter->setChildrenCollapsible( false );
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d->sideContainer = new QWidget( d->splitter );
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d->sideContainer->setMinimumWidth( 90 );
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d->sideContainer->setMaximumWidth( 300 );
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d->vlay = new QVBoxLayout( d->sideContainer );
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d->vlay->setMargin( 0 );
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d->sideTitle = new QLabel( d->sideContainer );
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d->vlay->addWidget( d->sideTitle );
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QFont tf = d->sideTitle->font();
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tf.setBold( true );
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d->sideTitle->setFont( tf );
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d->sideTitle->setMargin( 3 );
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d->sideTitle->setIndent( 3 );
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d->stack = new QStackedWidget( d->sideContainer );
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d->vlay->addWidget( d->stack );
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d->sideContainer->hide();
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connect( d->list, SIGNAL( itemClicked( QListWidgetItem* ) ), this, SLOT( itemClicked( QListWidgetItem* ) ) );
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connect( d->list, SIGNAL( customContextMenuRequested( const QPoint & ) ),
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this, SLOT( listContextMenu( const QPoint & ) ) );
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connect( d->splitter, SIGNAL( splitterMoved( int, int ) ), this, SLOT( splitterMoved( int, int ) ) );
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}
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Sidebar::~Sidebar()
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{
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delete d;
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}
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int Sidebar::addItem( QWidget *widget, const QIcon &icon, const QString &text )
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{
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if ( !widget )
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return -1;
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SidebarItem *newitem = new SidebarItem( widget, icon, text );
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d->list->addItem( newitem );
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d->pages.append( newitem );
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widget->setParent( d->stack );
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d->stack->addWidget( widget );
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// updating the minimum height of the icon view, so all are visible with no scrolling
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d->adjustListSize( false, true );
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return d->pages.count() - 1;
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}
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void Sidebar::setMainWidget( QWidget *widget )
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{
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delete d->sideWidget;
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d->sideWidget = widget;
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if ( d->sideWidget )
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{
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// setting the splitter as parent for the widget automatically plugs it
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// into the splitter, neat!
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d->sideWidget->setParent( d->splitter );
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if ( !d->splitterSizesSet )
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{
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QList<int> splitterSizes = Okular::Settings::splitterSizes();
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if ( !splitterSizes.count() )
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{
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// the first time use 1/10 for the panel and 9/10 for the pageView
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splitterSizes.push_back( 50 );
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splitterSizes.push_back( 500 );
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}
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d->splitter->setSizes( splitterSizes );
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d->splitterSizesSet = true;
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}
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}
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}
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void Sidebar::setBottomWidget( QWidget *widget )
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{
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delete d->bottomWidget;
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d->bottomWidget = widget;
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if ( d->bottomWidget )
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{
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d->bottomWidget->setParent( this );
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d->vlay->addWidget( d->bottomWidget );
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}
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}
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void Sidebar::setItemEnabled( int index, bool enabled )
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{
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if ( index < 0 || index >= d->pages.count() )
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return;
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Qt::ItemFlags f = d->pages.at( index )->flags();
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if ( enabled )
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{
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f |= Qt::ItemIsEnabled;
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f |= Qt::ItemIsSelectable;
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}
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else
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{
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f &= ~Qt::ItemIsEnabled;
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f &= ~Qt::ItemIsSelectable;
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}
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d->pages.at( index )->setFlags( f );
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if ( !enabled && index == currentIndex() )
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// find an enabled item, and select that one
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for ( int i = 0; i < d->pages.count(); ++i )
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if ( d->pages.at(i)->flags() & Qt::ItemIsEnabled )
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{
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setCurrentIndex( i );
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break;
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}
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}
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bool Sidebar::isItemEnabled( int index ) const
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{
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if ( index < 0 || index >= d->pages.count() )
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return false;
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Qt::ItemFlags f = d->pages.at( index )->flags();
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return ( f & Qt::ItemIsEnabled ) == Qt::ItemIsEnabled;
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}
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void Sidebar::setCurrentIndex( int index )
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{
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if ( index < 0 || index >= d->pages.count() || !isItemEnabled( index ) )
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return;
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itemClicked( d->pages.at( index ) );
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QModelIndex modelindex = d->list->model()->index( index, 0 );
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d->list->setCurrentIndex( modelindex );
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d->list->selectionModel()->select( modelindex, QItemSelectionModel::ClearAndSelect );
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}
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int Sidebar::currentIndex() const
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{
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return d->list->currentRow();
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}
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void Sidebar::setSidebarVisibility( bool visible )
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{
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if ( visible == d->list->isVisible() )
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return;
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static bool sideWasVisible = d->sideContainer->isVisible();
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d->list->setVisible( visible );
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if ( visible )
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{
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d->sideContainer->setVisible( sideWasVisible );
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sideWasVisible = true;
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}
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else
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{
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sideWasVisible = d->sideContainer->isVisible();
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d->sideContainer->setVisible( false );
|
|
}
|
|
}
|
|
|
|
bool Sidebar::isSidebarVisible() const
|
|
{
|
|
return d->sideContainer->isVisible();
|
|
}
|
|
|
|
void Sidebar::itemClicked( QListWidgetItem *item )
|
|
{
|
|
if ( !item )
|
|
return;
|
|
|
|
SidebarItem* sbItem = dynamic_cast< SidebarItem* >( item );
|
|
if ( !sbItem )
|
|
return;
|
|
|
|
if ( sbItem->widget() == d->stack->currentWidget() )
|
|
{
|
|
if ( d->sideContainer->isVisible() )
|
|
{
|
|
d->list->selectionModel()->clear();
|
|
d->sideContainer->hide();
|
|
}
|
|
else
|
|
{
|
|
d->sideContainer->show();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( d->sideContainer->isHidden() )
|
|
d->sideContainer->show();
|
|
d->stack->setCurrentWidget( sbItem->widget() );
|
|
d->sideTitle->setText( sbItem->toolTip() );
|
|
}
|
|
}
|
|
|
|
void Sidebar::splitterMoved( int /*pos*/, int index )
|
|
{
|
|
// if the side panel has been resized, save splitter sizes
|
|
if ( index == 1 )
|
|
saveSplitterSize();
|
|
}
|
|
|
|
void Sidebar::saveSplitterSize() const
|
|
{
|
|
Okular::Settings::setSplitterSizes( d->splitter->sizes() );
|
|
Okular::Settings::self()->writeConfig();
|
|
}
|
|
|
|
void Sidebar::listContextMenu( const QPoint &pos )
|
|
{
|
|
KMenu menu( this );
|
|
menu.addTitle( i18n( "Okular" ) );
|
|
QAction *showTextAct = menu.addAction( i18n( "Show Text" ) );
|
|
showTextAct->setCheckable( true );
|
|
showTextAct->setChecked( d->sideDelegate->isTextShown() );
|
|
connect( showTextAct, SIGNAL( toggled( bool ) ), this, SLOT( showTextToggled( bool ) ) );
|
|
menu.addSeparator();
|
|
QActionGroup *sizeGroup = new QActionGroup( &menu );
|
|
int curSize = d->list->iconSize().width();
|
|
#define ADD_SIZE_ACTION( text, itssize ) \
|
|
{ \
|
|
QAction *sizeAct = menu.addAction( text ); \
|
|
sizeAct->setCheckable( true ); \
|
|
sizeAct->setData( qVariantFromValue( itssize ) ); \
|
|
sizeAct->setChecked( itssize == curSize ); \
|
|
sizeGroup->addAction( sizeAct ); \
|
|
}
|
|
ADD_SIZE_ACTION( i18n( "Small Icons" ), 22 )
|
|
ADD_SIZE_ACTION( i18n( "Normal Icons" ), 32 )
|
|
ADD_SIZE_ACTION( i18n( "Big Icons" ), 48 )
|
|
#undef ADD_SIZE_ACTION
|
|
connect( sizeGroup, SIGNAL( triggered( QAction* ) ), this, SLOT( iconSizeChanged( QAction* ) ) );
|
|
menu.exec( mapToGlobal( pos ) );
|
|
}
|
|
|
|
void Sidebar::showTextToggled( bool on )
|
|
{
|
|
d->sideDelegate->setShowText( on );
|
|
d->adjustListSize( true, on );
|
|
d->list->reset();
|
|
d->list->update();
|
|
Okular::Settings::setSidebarShowText( on );
|
|
Okular::Settings::self()->writeConfig();
|
|
}
|
|
|
|
void Sidebar::iconSizeChanged( QAction *action )
|
|
{
|
|
int size = action->data().toInt();
|
|
int oldSize = d->list->iconSize().width();
|
|
d->list->setIconSize( QSize( size, size ) );
|
|
d->adjustListSize( true, size > oldSize );
|
|
d->list->reset();
|
|
d->list->update();
|
|
Okular::Settings::setSidebarIconSize( size );
|
|
Okular::Settings::self()->writeConfig();
|
|
}
|
|
|
|
#include "sidebar.moc"
|