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/kdesdk@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 783 insertions, 0 deletions

diff --git a/kompare/komparepart/komparelistview.cpp b/kompare/komparepart/komparelistview.cpp
new file mode 100644
index 00000000..b86bdef9
--- /dev/null
+++ b/kompare/komparepart/komparelistview.cpp
@@ -0,0 +1,783 @@
+/***************************************************************************
+                                komparelistview.h  -  description
+                                -------------------
+        begin                   : Sun Mar 4 2001
+        copyright               : (C) 2001-2004 Otto Bruggeman
+                                  (C) 2001-2003 John Firebaugh
+                                  (C) 2004      Jeff Snyder
+        email                   : otto.bruggeman@home.nl
+                                  jfirebaugh@kde.org
+                                  jeff@caffeinated.me.uk
+****************************************************************************/
+
+/***************************************************************************
+**
+**   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.
+**
+***************************************************************************/
+
+#include <qheader.h>
+#include <qpainter.h>
+#include <qregexp.h>
+#include <qtimer.h>
+
+#include <kdebug.h>
+#include <kglobal.h>
+#include <kglobalsettings.h>
+
+#include "diffmodel.h"
+#include "diffhunk.h"
+#include "difference.h"
+#include "viewsettings.h"
+#include "komparemodellist.h"
+#include "komparesplitter.h"
+
+#include "komparelistview.h"
+
+#define COL_LINE_NO      0
+#define COL_MAIN         1
+
+#define BLANK_LINE_HEIGHT 3
+#define HUNK_LINE_HEIGHT  5
+
+using namespace Diff2;
+
+KompareListViewFrame::KompareListViewFrame( bool isSource,
+                                            ViewSettings* settings,
+                                            KompareSplitter* parent,
+                                            const char* name ):
+	QFrame ( parent, name ),
+	m_view ( isSource, settings, this, name ),
+	m_label ( isSource?"Source":"Dest", this ),
+	m_layout ( this )
+{
+	setSizePolicy ( QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored) );
+	m_label.setSizePolicy ( QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed) );
+	QFrame *bottomLine = new QFrame(this);
+	bottomLine->setFrameShape(QFrame::HLine);
+	bottomLine->setFrameShadow ( QFrame::Plain );
+	bottomLine->setSizePolicy ( QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed) );
+	bottomLine->setFixedHeight(1);
+	m_label.setMargin(3);
+	m_layout.setSpacing(0);
+	m_layout.setMargin(0);
+	m_layout.addWidget(&m_label);
+	m_layout.addWidget(bottomLine);
+	m_layout.addWidget(&m_view);
+
+	connect( &m_view, SIGNAL(differenceClicked(const Diff2::Difference*)),
+	         parent, SLOT(slotDifferenceClicked(const Diff2::Difference*)) );
+
+	connect( parent, SIGNAL(scrollViewsToId(int)), &m_view, SLOT(scrollToId(int)) );
+	connect( parent, SIGNAL(setXOffset(int)), &m_view, SLOT(setXOffset(int)) );
+	connect( &m_view, SIGNAL(resized()), parent, SLOT(slotUpdateScrollBars()) );
+}
+
+void KompareListViewFrame::slotSetModel( const DiffModel* model )
+{
+	if( model )
+	{
+		if( view()->isSource() ) {
+			if( !model->sourceRevision().isEmpty() )
+				m_label.setText( model->sourceFile() + " (" + model->sourceRevision() + ")" );
+			else
+				m_label.setText( model->sourceFile() );
+		} else {
+			if( !model->destinationRevision().isEmpty() )
+				m_label.setText( model->destinationFile() + " (" + model->destinationRevision() + ")" );
+			else
+				m_label.setText( model->destinationFile() );
+		}
+	} else {
+		m_label.setText( QString::null );
+	}
+}
+
+KompareListView::KompareListView( bool isSource,
+                                  ViewSettings* settings,
+                                  QWidget* parent, const char* name ) :
+	KListView( parent, name ),
+	m_isSource( isSource ),
+	m_settings( settings ),
+	m_scrollId( -1 ),
+	m_selectedModel( 0 ),
+	m_selectedDifference( 0 )
+{
+	header()->hide();
+	addColumn( "Line Number", 0 );
+	addColumn( "Main" );
+	addColumn( "Blank" );
+	setColumnAlignment( COL_LINE_NO, AlignRight );
+	setAllColumnsShowFocus( true );
+	setRootIsDecorated( false );
+	setSorting( -1 );
+	setItemMargin( 3 );
+	setTreeStepSize( 0 );
+	setColumnWidthMode( COL_LINE_NO, Maximum );
+	setColumnWidthMode( COL_MAIN, Maximum );
+	setResizeMode( LastColumn );
+	setFrameStyle( QFrame::NoFrame );
+	setVScrollBarMode( QScrollView::AlwaysOff );
+	setHScrollBarMode( QScrollView::AlwaysOff );
+	setFocusPolicy( QWidget::NoFocus );
+	setFont( m_settings->m_font );
+	setSpaces( m_settings->m_tabToNumberOfSpaces );
+	setFocusProxy( parent->parentWidget() );
+}
+
+KompareListView::~KompareListView()
+{
+}
+
+KompareListViewItem* KompareListView::itemAtIndex( int i )
+{
+	return m_items[ i ];
+}
+
+int KompareListView::firstVisibleDifference()
+{
+	QListViewItem* item = itemAt( QPoint( 0, 0 ) );
+
+	if( item == 0 )
+	{
+		kdDebug(8104) << "no item at viewport coordinates (0,0)" << endl;
+	}
+
+	while( item ) {
+		KompareListViewLineItem* lineItem = dynamic_cast<KompareListViewLineItem*>(item);
+		if( lineItem && lineItem->diffItemParent()->difference()->type() != Difference::Unchanged )
+			break;
+		item = item->itemBelow();
+	}
+
+	if( item )
+		return m_items.findIndex( ((KompareListViewLineItem*)item)->diffItemParent() );
+
+	return -1;
+}
+
+int KompareListView::lastVisibleDifference()
+{
+	QListViewItem* item = itemAt( QPoint( 0, visibleHeight() - 1 ) );
+
+	if( item == 0 )
+	{
+		kdDebug(8104) << "no item at viewport coordinates (0," << visibleHeight() - 1 << ")" << endl;
+		item = lastItem();
+	}
+
+	while( item ) {
+		KompareListViewLineItem* lineItem = dynamic_cast<KompareListViewLineItem*>(item);
+		if( lineItem && lineItem->diffItemParent()->difference()->type() != Difference::Unchanged )
+			break;
+		item = item->itemAbove();
+	}
+
+	if( item )
+		return m_items.findIndex( ((KompareListViewLineItem*)item)->diffItemParent() );
+
+	return -1;
+}
+
+QRect KompareListView::itemRect( int i )
+{
+	QListViewItem* item = itemAtIndex( i );
+	int x = 0;
+	int y = itemPos( item );
+	int vx, vy;
+	contentsToViewport( x, y, vx, vy );
+	return QRect( vx, vy, 0, item->totalHeight() );
+}
+
+int KompareListView::minScrollId()
+{
+	return visibleHeight() / 2;
+}
+
+int KompareListView::maxScrollId()
+{
+	KompareListViewItem* item = (KompareListViewItem*)firstChild();
+	if(!item) return 0;
+	while( item && item->nextSibling() ) {
+		item = (KompareListViewItem*)item->nextSibling();
+	}
+	int maxId = item->scrollId() + item->maxHeight() - minScrollId();
+	kdDebug(8104) << "Max ID = " << maxId << endl;
+	return maxId;
+}
+
+int KompareListView::contentsWidth()
+{
+	return ( columnWidth(COL_LINE_NO) + columnWidth(COL_MAIN) );
+}
+
+void KompareListView::setXOffset( int x )
+{
+	kdDebug(8104) << "SetXOffset : Scroll to x position: " << x << endl;
+	setContentsPos( x, contentsY() );
+}
+
+void KompareListView::scrollToId( int id )
+{
+//	kdDebug(8104) << "ScrollToID : Scroll to id : " << id << endl;
+	KompareListViewItem* item = (KompareListViewItem*)firstChild();
+	while( item && item->nextSibling() ) {
+		if( ((KompareListViewItem*)item->nextSibling())->scrollId() > id )
+			break;
+		item = (KompareListViewItem*)item->nextSibling();
+	}
+
+	if( item ) {
+		int pos = item->itemPos();
+		int itemId = item->scrollId();
+		int height = item->totalHeight();
+		double r = (double)( id - itemId ) / (double)item->maxHeight();
+		int y = pos + (int)( r * (double)height ) - minScrollId();
+//		kdDebug(8104) << "scrollToID: " << endl;
+//		kdDebug(8104) << "            id = " << id << endl;
+//		kdDebug(8104) << "      id after = " << ( item->nextSibling() ? QString::number( ((KompareListViewItem*)item->nextSibling())->scrollId() ) : "no such sibling..." ) << endl;
+//		kdDebug(8104) << "           pos = " << pos << endl;
+//		kdDebug(8104) << "        itemId = " << itemId << endl;
+//		kdDebug(8104) << "             r = " << r << endl;
+//		kdDebug(8104) << "        height = " << height << endl;
+//		kdDebug(8104) << "         minID = " << minScrollId() << endl;
+//		kdDebug(8104) << "             y = " << y << endl;
+//		kdDebug(8104) << "contentsHeight = " << contentsHeight() << endl;
+//		kdDebug(8104) << "         c - y = " << contentsHeight() - y << endl;
+		setContentsPos( contentsX(), y );
+	}
+
+	m_scrollId = id;
+}
+
+int KompareListView::scrollId()
+{
+	if( m_scrollId < 0 )
+		m_scrollId = minScrollId();
+	return m_scrollId;
+}
+
+void KompareListView::setSelectedDifference( const Difference* diff, bool scroll )
+{
+	kdDebug(8104) << "KompareListView::setSelectedDifference(" << diff << ", " << scroll << ")" << endl;
+
+	// When something other than a click causes this function to be called,
+	// it'll only get called once, and all is simple.
+	//
+	// When the user clicks on a diff, this function will get called once when
+	// komparesplitter::slotDifferenceClicked runs, and again when the
+	// setSelection signal from the modelcontroller arrives.
+	//
+	// the first call (which will always be from the splitter) will have
+	// scroll==false, and the the second call will bail out here.
+	// Which is why clicking on a difference does not cause the listviews to
+	// scroll.
+	if ( m_selectedDifference == diff )
+		return;
+
+	m_selectedDifference = diff;
+
+	KompareListViewItem* item = m_itemDict[ (void*)diff ];
+	if( !item ) {
+		kdDebug(8104) << "KompareListView::slotSetSelection(): couldn't find our selection!" << endl;
+		return;
+	}
+
+	// why does this not happen when the user clicks on a diff? see the comment above.
+	if( scroll )
+		scrollToId(item->scrollId());
+	setSelected( item, true );
+}
+
+void KompareListView::slotSetSelection( const Difference* diff )
+{
+	kdDebug(8104) << "KompareListView::slotSetSelection( const Difference* diff )" << endl;
+
+	setSelectedDifference( diff, true );
+}
+
+void KompareListView::slotSetSelection( const DiffModel* model, const Difference* diff )
+{
+	kdDebug(8104) << "KompareListView::slotSetSelection( const DiffModel* model, const Difference* diff )" << endl;
+
+	if( m_selectedModel && m_selectedModel == model ) {
+		slotSetSelection( diff );
+		return;
+	}
+
+	clear();
+	m_items.clear();
+	m_itemDict.clear();
+	m_selectedModel = model;
+
+	m_itemDict.resize(model->differenceCount());
+
+	DiffHunkListConstIterator hunkIt = model->hunks()->begin();
+	DiffHunkListConstIterator hEnd   = model->hunks()->end();
+
+	KompareListViewItem* item = 0;
+	Difference* tmpdiff = 0;
+	DiffHunk* hunk = 0;
+	
+
+	for ( ; hunkIt != hEnd; ++hunkIt )
+	{
+		hunk = *hunkIt;
+
+		if( item )
+			item = new KompareListViewHunkItem( this, item, hunk, model->isBlended() );
+		else
+			item = new KompareListViewHunkItem( this, hunk, model->isBlended() );
+
+		DifferenceListConstIterator diffIt = hunk->differences().begin();
+		DifferenceListConstIterator dEnd   = hunk->differences().end();
+
+		for ( ; diffIt != dEnd; ++diffIt )
+		{
+			tmpdiff = *diffIt;
+
+			item = new KompareListViewDiffItem( this, item, tmpdiff );
+
+			int type = tmpdiff->type();
+
+			if ( type != Difference::Unchanged )
+			{
+				m_items.append( (KompareListViewDiffItem*)item );
+				m_itemDict.insert( tmpdiff, (KompareListViewDiffItem*)item );
+			}
+		}
+	}
+
+	slotSetSelection( diff );
+}
+
+void KompareListView::contentsMousePressEvent( QMouseEvent* e )
+{
+	QPoint vp = contentsToViewport( e->pos() );
+	KompareListViewLineItem* lineItem = dynamic_cast<KompareListViewLineItem*>( itemAt( vp ) );
+	if( !lineItem )
+		return;
+	KompareListViewDiffItem* diffItem = lineItem->diffItemParent();
+	if( diffItem->difference()->type() != Difference::Unchanged ) {
+		emit differenceClicked( diffItem->difference() );
+	}
+}
+
+void KompareListView::contentsMouseDoubleClickEvent( QMouseEvent* e )
+{
+	QPoint vp = contentsToViewport( e->pos() );
+	KompareListViewLineItem* lineItem = dynamic_cast<KompareListViewLineItem*>( itemAt( vp ) );
+	if ( !lineItem )
+		return;
+	KompareListViewDiffItem* diffItem = lineItem->diffItemParent();
+	if ( diffItem->difference()->type() != Difference::Unchanged ) {
+		// FIXME: make a new signal that does both
+		emit differenceClicked( diffItem->difference() );
+		emit applyDifference( !diffItem->difference()->applied() );
+	}
+}
+
+void KompareListView::slotApplyDifference( bool apply )
+{
+	m_itemDict[ (void*)m_selectedDifference ]->applyDifference( apply );
+}
+
+void KompareListView::slotApplyAllDifferences( bool apply )
+{
+	QPtrDictIterator<KompareListViewDiffItem> it ( m_itemDict );
+	for( ; it.current(); ++it )
+		it.current()->applyDifference( apply );
+	repaint();
+}
+
+void KompareListView::slotApplyDifference( const Difference* diff, bool apply )
+{
+	m_itemDict[ (void*)diff ]->applyDifference( apply );
+}
+
+void KompareListView::setSpaces( int spaces )
+{
+	m_spaces.truncate( 0 );
+	kdDebug( 8104 ) << "tabToNumberOfSpaces: " << spaces << endl;
+	for ( int i = 0; i < spaces; i++ )
+		m_spaces += " ";
+
+	triggerUpdate();
+}
+
+void KompareListView::wheelEvent( QWheelEvent* e )
+{
+	e->ignore(); // we want the parent to catch wheel events
+}
+
+void KompareListView::resizeEvent( QResizeEvent* e )
+{
+	KListView::resizeEvent(e);
+	emit resized();
+	kdDebug() << "resizeEvent " << endl;
+}
+
+KompareListViewItem::KompareListViewItem( KompareListView* parent )
+	: QListViewItem( parent ),
+	m_scrollId( 0 )
+{
+//	kdDebug(8104) << "Created KompareListViewItem with scroll id " << m_scrollId << endl;
+}
+
+KompareListViewItem::KompareListViewItem( KompareListView* parent, KompareListViewItem* after )
+	: QListViewItem( parent, after ),
+	m_scrollId( after->scrollId() + after->maxHeight() )
+{
+//	kdDebug(8104) << "Created KompareListViewItem with scroll id " << m_scrollId << endl;
+}
+
+KompareListViewItem::KompareListViewItem( KompareListViewItem* parent )
+	: QListViewItem( parent ),
+	m_scrollId( 0 )
+{
+}
+
+KompareListViewItem::KompareListViewItem( KompareListViewItem* parent, KompareListViewItem* /*after*/ )
+	: QListViewItem( parent ),
+	m_scrollId( 0 )
+{
+}
+
+KompareListView* KompareListViewItem::kompareListView() const
+{
+	return (KompareListView*)listView();
+}
+
+void KompareListViewItem::paintFocus( QPainter* /* p */, const QColorGroup& /* cg */, const QRect& /* r */ )
+{
+	// Don't paint anything
+}
+
+KompareListViewDiffItem::KompareListViewDiffItem( KompareListView* parent, Difference* difference )
+	: KompareListViewItem( parent ),
+	m_difference( difference ),
+	m_sourceItem( 0L ),
+	m_destItem( 0L )
+{
+	init();
+}
+
+KompareListViewDiffItem::KompareListViewDiffItem( KompareListView* parent, KompareListViewItem* after, Difference* difference )
+	: KompareListViewItem( parent, after ),
+	m_difference( difference ),
+	m_sourceItem( 0L ),
+	m_destItem( 0L )
+{
+	init();
+}
+
+void KompareListViewDiffItem::init()
+{
+	setExpandable( true );
+	setOpen( true );
+	m_destItem = new KompareListViewLineContainerItem( this, false );
+	m_sourceItem = new KompareListViewLineContainerItem( this, true );
+	setVisibility();
+}
+
+void KompareListViewDiffItem::setup()
+{
+	KompareListViewItem::setup();
+	setHeight( 0 );
+}
+
+void KompareListViewDiffItem::setVisibility()
+{
+	m_sourceItem->setVisible( kompareListView()->isSource() || m_difference->applied() );
+	m_destItem->setVisible( !m_sourceItem->isVisible() );
+}
+
+void KompareListViewDiffItem::applyDifference( bool apply )
+{
+	kdDebug(8104) << "KompareListViewDiffItem::applyDifference( " << apply << " )" << endl;
+	setVisibility();
+	setup();
+	repaint();
+}
+
+int KompareListViewDiffItem::maxHeight()
+{
+	int lines = QMAX( m_difference->sourceLineCount(), m_difference->destinationLineCount() );
+	if( lines == 0 )
+		return BLANK_LINE_HEIGHT;
+	else
+		return lines * listView()->fontMetrics().lineSpacing();
+}
+
+void KompareListViewDiffItem::setSelected( bool b )
+{
+	kdDebug(8104) << "KompareListViewDiffItem::setSelected( " << b << " )" << endl;
+	KompareListViewItem::setSelected( b );
+	QListViewItem* item = m_sourceItem->isVisible() ?
+	                      m_sourceItem->firstChild() :
+	                      m_destItem->firstChild();
+	while( item && item->isVisible() ) {
+		item->repaint();
+		item = item->nextSibling();
+	}
+}
+
+KompareListViewLineContainerItem::KompareListViewLineContainerItem( KompareListViewDiffItem* parent, bool isSource )
+	: KompareListViewItem( parent ),
+	m_isSource( isSource )
+{
+//	kdDebug(8104) << "isSource ? " << (isSource ? " Yes!" : " No!") << endl;
+	setExpandable( true );
+	setOpen( true );
+
+	int lines = lineCount();
+	int line = lineNumber() + lines - 1;
+//	kdDebug(8104) << "LineNumber : " << lineNumber() << endl;
+	if( lines == 0 ) {
+		new KompareListViewBlankLineItem( this );
+		return;
+	}
+
+	for( int i = lines - 1; i >= 0; i--, line-- ) {
+		new KompareListViewLineItem( this, line, lineAt( i ) );
+	}
+}
+
+void KompareListViewLineContainerItem::setup()
+{
+	KompareListViewItem::setup();
+	setHeight( 0 );
+}
+
+KompareListViewDiffItem* KompareListViewLineContainerItem::diffItemParent() const
+{
+	return (KompareListViewDiffItem*)parent();
+}
+
+int KompareListViewLineContainerItem::lineCount() const
+{
+	return m_isSource ? diffItemParent()->difference()->sourceLineCount() :
+	                    diffItemParent()->difference()->destinationLineCount();
+}
+
+int KompareListViewLineContainerItem::lineNumber() const
+{
+	return m_isSource ? diffItemParent()->difference()->sourceLineNumber() :
+	                    diffItemParent()->difference()->destinationLineNumber();
+}
+
+DifferenceString* KompareListViewLineContainerItem::lineAt( int i ) const
+{
+	return m_isSource ? diffItemParent()->difference()->sourceLineAt( i ) :
+	                    diffItemParent()->difference()->destinationLineAt( i );
+}
+
+KompareListViewLineItem::KompareListViewLineItem( KompareListViewLineContainerItem* parent, int line, DifferenceString* text )
+	: KompareListViewItem( parent )
+{
+	setText( COL_LINE_NO, QString::number( line ) );
+	setText( COL_MAIN, text->string() );
+	m_text = text;
+}
+
+void KompareListViewLineItem::setup()
+{
+	KompareListViewItem::setup();
+	setHeight( listView()->fontMetrics().lineSpacing() );
+}
+
+void KompareListViewLineItem::paintCell( QPainter * p, const QColorGroup & cg, int column, int width, int align )
+{
+	QColor bg = cg.base();
+	p->fillRect( 0, 0, width, height(), bg );
+	if ( diffItemParent()->difference()->type() == Difference::Unchanged )
+	{
+		if ( column == COL_LINE_NO )
+		{
+			bg = cg.background();
+			p->fillRect( 0, 0, width, height(), bg );
+		}
+	}
+	else
+	{
+		bg = kompareListView()->settings()->colorForDifferenceType(
+		          diffItemParent()->difference()->type(),
+		          diffItemParent()->isSelected(),
+		          diffItemParent()->difference()->applied() );
+		if ( column != COL_MAIN )
+			p->fillRect( 0, 0, width, height(), bg );
+	}
+
+	p->setPen( cg.foreground() );
+
+	paintText( p, bg, column, width, align );
+
+	if ( diffItemParent()->isSelected() )
+	{
+		p->setPen( bg.dark(135) );
+		if ( this == parent()->firstChild() )
+			p->drawLine( 0, 0, width, 0 );
+		if ( nextSibling() == 0 )
+			p->drawLine( 0, height() - 1, width, height() - 1 );
+	}
+}
+
+void KompareListViewLineItem::paintText( QPainter* p, const QColor& bg, int column, int width, int align )
+{
+	if ( column == COL_MAIN )
+	{
+		QString textChunk;
+		int offset = listView()->itemMargin();
+		unsigned int prevValue = 0;
+		int chunkWidth;
+		QBrush changeBrush( bg, Dense3Pattern );
+		QBrush normalBrush( bg, SolidPattern );
+		QBrush brush;
+
+		if ( m_text->string().isEmpty() )
+		{
+			p->fillRect( 0, 0, width, height(), normalBrush );
+			return;
+		}
+
+		p->fillRect( 0, 0, offset, height(), normalBrush );
+
+		if ( !m_text->markerList().isEmpty() )
+		{
+			MarkerListConstIterator markerIt = m_text->markerList().begin();
+			MarkerListConstIterator mEnd     = m_text->markerList().end();
+			Marker* m = *markerIt;
+
+			for ( ; markerIt != mEnd; ++markerIt )
+			{
+				m  = *markerIt;
+				textChunk = m_text->string().mid( prevValue, m->offset() - prevValue );
+//				kdDebug(8104) << "TextChunk   = \"" << textChunk << "\"" << endl;
+//				kdDebug(8104) << "c->offset() = " << c->offset() << endl;
+//				kdDebug(8104) << "prevValue   = " << prevValue << endl;
+				textChunk.replace( QChar('\t'), kompareListView()->spaces() );
+				prevValue = m->offset();
+				if ( m->type() == Marker::End )
+				{
+					QFont font( p->font() );
+					font.setBold( true );
+					p->setFont( font );
+//					p->setPen( Qt::blue );
+					brush = changeBrush;
+				}
+				else
+				{
+					QFont font( p->font() );
+					font.setBold( false );
+					p->setFont( font );
+//					p->setPen( Qt::black );
+					brush = normalBrush;
+				}
+				chunkWidth = p->fontMetrics().width( textChunk );
+				p->fillRect( offset, 0, chunkWidth, height(), brush );
+				p->drawText( offset, 0,
+				             chunkWidth, height(),
+				             align, textChunk );
+				offset += chunkWidth;
+			}
+		}
+		if ( prevValue < m_text->string().length() )
+		{
+			// Still have to draw some string without changes
+			textChunk = m_text->string().mid( prevValue, kMax( ( unsigned int )1, m_text->string().length() - prevValue ) );
+			textChunk.replace( QChar('\t'), kompareListView()->spaces() );
+//			kdDebug(8104) << "TextChunk   = \"" << textChunk << "\"" << endl;
+			QFont font( p->font() );
+			font.setBold( false );
+			p->setFont( font );
+			chunkWidth = p->fontMetrics().width( textChunk );
+			p->fillRect( offset, 0, chunkWidth, height(), normalBrush );
+			p->drawText( offset, 0,
+			             chunkWidth, height(),
+			             align, textChunk );
+			offset += chunkWidth;
+		}
+		p->fillRect( offset, 0, width - offset, height(), normalBrush );
+	}
+	else
+	{
+		p->fillRect( 0, 0, width, height(), bg );
+		p->drawText( listView()->itemMargin(), 0,
+		             width - listView()->itemMargin(), height(),
+		             align, text( column ) );
+	}
+}
+
+KompareListViewDiffItem* KompareListViewLineItem::diffItemParent() const
+{
+	KompareListViewLineContainerItem* p = (KompareListViewLineContainerItem*)parent();
+	return p->diffItemParent();
+}
+
+KompareListViewBlankLineItem::KompareListViewBlankLineItem( KompareListViewLineContainerItem* parent )
+	: KompareListViewLineItem( parent, 0, new DifferenceString() )
+{
+}
+
+void KompareListViewBlankLineItem::setup()
+{
+	KompareListViewLineItem::setup();
+	setHeight( BLANK_LINE_HEIGHT );
+}
+
+void KompareListViewBlankLineItem::paintText( QPainter* p, const QColor& bg, int column, int width, int )
+{
+	if ( column == COL_MAIN )
+	{
+		QBrush normalBrush( bg, SolidPattern );
+		p->fillRect( 0, 0, width, height(), normalBrush );
+	}
+}
+
+KompareListViewHunkItem::KompareListViewHunkItem( KompareListView* parent, DiffHunk* hunk, bool zeroHeight )
+	: KompareListViewItem( parent ),
+	m_zeroHeight( zeroHeight ),
+	m_hunk( hunk )
+{
+	setSelectable( false );
+}
+
+KompareListViewHunkItem::KompareListViewHunkItem( KompareListView* parent, KompareListViewItem* after, DiffHunk* hunk,  bool zeroHeight )
+	: KompareListViewItem( parent, after ),
+	m_zeroHeight( zeroHeight ),
+	m_hunk( hunk )
+{
+	setSelectable( false );
+}
+
+int KompareListViewHunkItem::maxHeight()
+{
+	if( m_zeroHeight ) {
+		return 0;
+	} else if( m_hunk->function().isEmpty() ) {
+		return HUNK_LINE_HEIGHT;
+	} else {
+		return listView()->fontMetrics().lineSpacing();
+	}
+}
+
+void KompareListViewHunkItem::setup()
+{
+	KompareListViewItem::setup();
+
+	setHeight( maxHeight() );
+}
+
+void KompareListViewHunkItem::paintCell( QPainter * p, const QColorGroup & cg, int column, int width, int align )
+{
+	p->fillRect( 0, 0, width, height(), cg.mid() );
+	if( column == COL_MAIN ) {
+		p->drawText( listView()->itemMargin(), 0, width - listView()->itemMargin(), height(),
+		             align, m_hunk->function() );
+	}
+}
+
+#include "komparelistview.moc"