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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit2bda8f7717adf28da4af0d34fb82f63d2868c31d (patch)
tree8d927b7b47a90c4adb646482a52613f58acd6f8c /khexedit/lib/kcolumnsview.cpp
downloadtdeutils-2bda8f7717adf28da4af0d34fb82f63d2868c31d.tar.gz
tdeutils-2bda8f7717adf28da4af0d34fb82f63d2868c31d.zip
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/kdeutils@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/***************************************************************************
+ kcolumnsview.cpp - description
+ -------------------
+ begin : Mit Mai 21 2003
+ copyright : (C) 2003 by Friedrich W. H. Kossebau
+ email : Friedrich.W.H@Kossebau.de
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * This library is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU Library General Public *
+ * License version 2 as published by the Free Software Foundation. *
+ * *
+ ***************************************************************************/
+
+
+//#include <kdebug.h>
+
+// qt specific
+#include <qpainter.h>
+// lib specific
+#include "kcolumn.h"
+#include "kcolumnsview.h"
+
+
+using namespace KHE;
+
+static bool DefaultHorizontalGrid = false;
+
+KColumnsView::KColumnsView( /*bool R,*/ QWidget *Parent, const char *Name, WFlags Flags )
+ : QScrollView( Parent, Name, Flags | WRepaintNoErase /*| WStaticContents*/ ),
+ NoOfLines( 0 ),
+ LineHeight( 0 ),
+ TotalWidth( 0 ),
+ HorizontalGrid( DefaultHorizontalGrid ),
+// Reversed( R ),
+ d( 0 )
+{
+ viewport()->setBackgroundMode( PaletteBase );
+ setBackgroundMode( PaletteBackground, PaletteBase );
+ viewport()->setFocusProxy( this );
+
+ Columns.setAutoDelete( true );
+}
+
+KColumnsView::~KColumnsView()
+{
+}
+
+
+void KColumnsView::setNoOfLines( int NewNoOfLines )
+{
+ NoOfLines = NewNoOfLines;
+}
+
+
+void KColumnsView::setLineHeight( KPixelY LH )
+{
+ LineHeight = LH;
+ for( KColumn *C=Columns.first(); C; C=Columns.next() )
+ C->setLineHeight( LineHeight );
+ verticalScrollBar()->setLineStep( LineHeight );
+
+ updateLineBufferSize();
+}
+
+
+void KColumnsView::updateWidths()
+{
+ TotalWidth = 0;
+ for( KColumn *C=Columns.first(); C; C=Columns.next() )
+ {
+ C->setX( TotalWidth );
+ TotalWidth += C->visibleWidth();
+ }
+
+ updateLineBufferSize();
+}
+
+
+void KColumnsView::updateLineBufferSize()
+{
+ int w = totalWidth();
+ int h = LineHeight;
+
+ if( w != LineBuffer.width() || h != LineBuffer.height() )
+ LineBuffer.resize( w, h );
+}
+
+
+int KColumnsView::noOfLinesPerPage() const
+{
+ if( !viewport() || LineHeight == 0 )
+ return 1;
+// int NoOfLinesPerPage = (visibleHeight()-1) / LineHeight; // -1 ensures to get always the last visible line
+ int NoOfLinesPerPage = (viewport()->height()-1) / LineHeight; // -1 ensures to get always the last visible line
+
+ if( NoOfLinesPerPage == 0 )
+ // ensure to move down at least one line
+ NoOfLinesPerPage = 1;
+ return NoOfLinesPerPage;
+}
+
+
+void KColumnsView::addColumn( KColumn *C )
+{
+// if( Reversed )
+// Columns.prepend( C );
+// else
+ Columns.append( C );
+
+ updateWidths();
+}
+
+
+void KColumnsView::removeColumn( KColumn *C )
+{
+ Columns.remove( C );
+
+ updateWidths();
+}
+
+
+void KColumnsView::updateView()
+{
+ resizeContents( totalWidth(), totalHeight() );
+ updateContents();
+}
+
+
+void KColumnsView::repaintView()
+{
+ resizeContents( totalWidth(), totalHeight() );
+ repaintContents( false );
+}
+
+
+void KColumnsView::paintEmptyArea( QPainter *P, int cx ,int cy, int cw, int ch)
+{
+ P->fillRect( cx, cy, cw, ch, backgroundBrush() );
+}
+
+
+void KColumnsView::drawContents( QPainter *P, int cx, int cy, int cw, int ch )
+{
+ //kdDebug(1501) << "drawContents(" << cx<<","<<cw<<"#"<<cy<<","<<ch<<")\n";
+ KPixelXs AffectedXs( cx, cw, true );
+ // content to be shown?
+ if( AffectedXs.startsBefore(TotalWidth) )
+ {
+ KPixelYs AffectedYs( cy, ch, true );
+
+ // collect affected columns
+ QPtrList<KColumn> RedrawColumns;
+ for( KColumn *C=Columns.first(); C; C=Columns.next() )
+ if( C->isVisible() && C->overlaps(AffectedXs) )
+ RedrawColumns.append( C );
+
+ // any lines to be drawn?
+ if( NoOfLines > 0 )
+ {
+ // calculate affected lines
+ KSection AffectedLines = visibleLines( AffectedYs );
+ AffectedLines.restrictEndTo( NoOfLines - 1 );
+
+ if( AffectedLines.isValid() )
+ {
+ QPainter Paint;
+ Paint.begin( &LineBuffer, this );
+
+ // starting painting with the first line
+ KColumn *C = RedrawColumns.first();
+ Paint.translate( C->x(), 0 );
+
+ for( ; C; C=RedrawColumns.next() )
+ {
+ C->paintFirstLine( &Paint, AffectedXs, AffectedLines.start() );
+ Paint.translate( C->width(), 0 );
+ }
+
+ // Go through the other lines
+ KPixelY y = AffectedLines.start() * LineHeight;
+ int l = AffectedLines.start();
+ while( true )
+ {
+ Paint.end();
+ P->drawPixmap( cx, y, LineBuffer, cx, 0, cw, LineHeight ); // bitBlt directly impossible: lack of real coord
+
+ // copy to screen
+// bitBlt( viewport(), cx - contentsX(), y - contentsY(),
+// &LineBuffer, cx, 0, cw, LineHeight );
+
+ ++l;
+ y += LineHeight;
+
+ if( l > AffectedLines.end() )
+ break;
+
+ // to avoid flickers we first paint to the linebuffer
+ Paint.begin( &LineBuffer, this );
+
+ KColumn *C = RedrawColumns.first();
+ Paint.translate( C->x(), 0 );
+
+ for( ; C; C=RedrawColumns.next() )
+ {
+ C->paintNextLine( &Paint );
+ Paint.translate( C->width(), 0 );
+ }
+
+ if( HorizontalGrid && cx < TotalWidth )
+ Paint.drawLine( cx, LineHeight-1, TotalWidth-1, LineHeight-1 ); // TODO: use a additional TotalHeight?
+ }
+ }
+ }
+
+ // draw empty columns?
+ AffectedYs.setStart( totalHeight() );
+ if( AffectedYs.isValid() )
+ {
+ for( KColumn *C = RedrawColumns.first(); C; C=RedrawColumns.next() )
+ C->paintEmptyColumn( P, AffectedXs, AffectedYs );
+ }
+ }
+
+ // Paint empty rects
+ AffectedXs.setStart( TotalWidth );
+ if( AffectedXs.isValid() )
+ paintEmptyArea( P, AffectedXs.start(), cy, AffectedXs.width(), ch );
+}
+
+// Implemented to get rid of a compiler warning
+void KColumnsView::drawContents( QPainter * ) {}
+
+#include "kcolumnsview.moc"