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/*
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KDChart - a multi-platform charting engine
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*/
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/****************************************************************************
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** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KDChart library.
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid commercial KDChart licenses may use this file in
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** accordance with the KDChart Commercial License Agreement provided with
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** the Software.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.klaralvdalens-datakonsult.se/?page=products for
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** information about KDChart Commercial License Agreements.
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**
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** Contact info@klaralvdalens-datakonsult.se if any conditions of this
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** licensing are not clear to you.
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**
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**********************************************************************/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "KDChartBWPainter.h"
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#include <KDChartParams.h>
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#include "KDChartTextPiece.h"
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#include <tqpainter.h>
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#include <tqmemarray.h>
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#include <stdlib.h>
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/**
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\class KDChartBWPainter KDChartBWPainter.h
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\brief A chart painter implementation that can paint Box&Whisker charts.
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*/
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/**
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Constructor. Sets up internal data structures as necessary.
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\param params the KDChartParams structure that defines the chart
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*/
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KDChartBWPainter::KDChartBWPainter( KDChartParams* params ) :
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KDChartAxesPainter( params )
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{
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// This constructor intentionally left blank so far; we cannot setup the
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// geometry yet since we do not know the size of the painter.
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}
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/**
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Destructor.
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*/
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KDChartBWPainter::~KDChartBWPainter()
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{
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// intentionally left blank
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}
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void quicksort( TQMemArray<double>& a, int lo, int hi )
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{
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int i=lo, j=hi;
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double h;
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double x=a[(lo+hi)/2];
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do
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{
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while (a[i]<x) i++;
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while (a[j]>x) j--;
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if (i<=j)
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{
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h=a[i]; a[i]=a[j]; a[j]=h;
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i++; j--;
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}
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} while (i<=j);
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if (lo<j) quicksort(a, lo, j);
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if (i<hi) quicksort(a, i, hi);
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}
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// The following function returns the number of used cells containing a double.
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int KDChartBWPainter::calculateStats( KDChartTableDataBase& data,
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uint dataset )
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{
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const uint nMax = data.usedCols();
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int nUsed = 0;
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TQMemArray<double> values( nMax );
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double sum = 0.0;
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TQVariant vVal;
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if( data.sorted() ){
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for( uint i=0; i<nMax; ++i){
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if( data.cellCoord( dataset, i, vVal, 1 ) &&
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TQVariant::Double == vVal.type() ) {
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values[nUsed] = vVal.toDouble();
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sum += values[nUsed];
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++nUsed;
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}
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}
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}else{
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// make copy of the dataset and look if it is sorted
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bool sorted = true;
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double last = 0.0; // <-- avoids an annoying compile-time warning
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for( uint i=0; i<nMax; ++i){
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if( data.cellCoord( dataset, i, vVal, 1 ) &&
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TQVariant::Double == vVal.type() ) {
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values[nUsed] = vVal.toDouble();
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if( nUsed // skip 1st value
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&& last > values[nUsed] )
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sorted = false;
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last = values[nUsed];
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sum += last;
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++nUsed;
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}
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}
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if( !sorted ){
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// sort our copy of the dataset
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quicksort( values, 0, nUsed-1 );
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}
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}
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// Values now contains all used values without empty gaps.
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// nUsed contains their number, so values[nUsed-1] is the last value.
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if( nUsed ){
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// store some values
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stats[ KDChartParams::MaxValue ] = values[nUsed-1];
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stats[ KDChartParams::MinValue ] = values[0];
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stats[ KDChartParams::MeanValue ] = sum / nUsed;
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// calculate statistics
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bool bOdd = 1 == nUsed % 2;
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// find median
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int nUd2 = nUsed/2;
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if( bOdd )
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stats[ KDChartParams::Median ] = values[ nUd2 ];
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else
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stats[ KDChartParams::Median ] =
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(values[ TQMAX(nUd2-1, 0) ] + values[ nUd2 ]) /2;
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// find last value of lower quartile
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nLastQ1 = TQMAX( nUd2-1, 0 );
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// find 1st value of lower quartile
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nFirstQ1 = nLastQ1 / 2;
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// determine how many values are below the median ( == how many are above it)
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int nLowerCount = nLastQ1 - nFirstQ1 + 1;
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// find 1st value of upper quartile
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nFirstQ3 = bOdd ? TQMIN( nUd2+1, nUsed-1 ) : nUd2;
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// find last value of upper quartile
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nLastQ3 = nFirstQ3 + nLowerCount - 1;
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// find quartiles
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bool bOdd2 = 1 == nLowerCount % 2;
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// find lower quartile
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if( bOdd2 )
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stats[ KDChartParams::Quartile1 ] = values[ nFirstQ1 ];
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else
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stats[ KDChartParams::Quartile1 ] =
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(values[ TQMAX(nFirstQ1-1, 0) ] + values[ nFirstQ1 ]) /2;
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// find upper quartile
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if( bOdd2 ){
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stats[ KDChartParams::Quartile3 ] = values[ nLastQ3 ];
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}
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else{
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//tqDebug(" "+TQString::number(nLastQ3)+" "+TQString::number(KDChartParams::Quartile3)
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// +" "+TQString::number(nUsed)+" "+TQString::number(TQMIN(nLastQ3+1, nUsed-1)));
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stats[ KDChartParams::Quartile3 ] =
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(values[ nLastQ3 ] + values[ TQMIN(nLastQ3+1, nUsed-1) ]) /2;
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}
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// find the interquartile range (IQR)
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double iqr = stats[ KDChartParams::Quartile3 ] - stats[ KDChartParams::Quartile1 ];
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// calculate the fences
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double upperInner, lowerInner, upperOuter, lowerOuter;
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params()->bWChartFences( upperInner, lowerInner,
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upperOuter, lowerOuter );
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stats[ KDChartParams::UpperInnerFence ] =
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stats[ KDChartParams::Quartile3 ] + iqr * upperInner;
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stats[ KDChartParams::LowerInnerFence ] =
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stats[ KDChartParams::Quartile1 ] - iqr * lowerInner;
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stats[ KDChartParams::UpperOuterFence ] =
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stats[ KDChartParams::Quartile3 ] + iqr * upperOuter;
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stats[ KDChartParams::LowerOuterFence ] =
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stats[ KDChartParams::Quartile1 ] - iqr * lowerOuter;
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}
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return nUsed;
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}
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/**
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This method is a specialization that returns a fallback legend text
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appropriate for BW that do not have the same notion of a dataset like
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e.g. bars.
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This method is only used when automatic legends are used, because
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manual and first-column legends do not need fallback texts.
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\param uint dataset the dataset number for which to generate a
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fallback text
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\return the fallback text to use for describing the specified
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dataset in the legend
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*/
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TQString KDChartBWPainter::fallbackLegendText( uint dataset ) const
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{
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return TQObject::tr( "Series " ) + TQString::number( dataset + 1 );
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}
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/**
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This methods returns the number of elements to be shown in the
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legend in case fallback texts are used.
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This method is only used when automatic legends are used, because
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manual and first-column legends do not need fallback texts.
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\return the number of fallback texts to use
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*/
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uint KDChartBWPainter::numLegendFallbackTexts( KDChartTableDataBase* data ) const
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{
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return data->usedRows();
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}
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bool KDChartBWPainter::isNormalMode() const
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{
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return KDChartParams::BWNormal == params()->bWChartSubType();
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}
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int KDChartBWPainter::clipShiftUp( bool, double ) const
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{
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return 0;
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}
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/**
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Paints the actual data area and registers the region for the data
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points if \a regions is not 0.
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\param painter the TQPainter onto which the chart should be painted
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\param data the data that will be displayed as a chart
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\param paint2nd specifies whether the main chart or the additional chart is to be drawn now
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\param regions a pointer to a list of regions that will be filled
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with regions representing the data segments, if not null
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*/
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void KDChartBWPainter::specificPaintData( TQPainter* painter,
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const TQRect& ourClipRect,
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KDChartTableDataBase* data,
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KDChartDataRegionList* /*regions*/,
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const KDChartAxisParams* axisPara,
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bool /*bNormalMode*/,
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uint /*chart*/,
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double logWidth,
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double /*areaWidthP1000*/,
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double logHeight,
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double /*axisYOffset*/,
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double /*minColumnValue*/,
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double /*maxColumnValue*/,
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double /*columnValueDistance*/,
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uint chartDatasetStart,
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uint chartDatasetEnd,
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uint datasetStart,
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uint datasetEnd )
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{
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//double areaHeightP1000 = logHeight / 1000.0;
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uint datasetNum = ( chartDatasetEnd - chartDatasetStart ) + 1;
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double pixelsPerUnit = 0.0;
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if( 0.0 != axisPara->trueAxisHigh() - axisPara->trueAxisLow() )
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pixelsPerUnit = logHeight / (axisPara->trueAxisHigh() - axisPara->trueAxisLow());
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else
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pixelsPerUnit = logHeight / 10;
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// Distance between the individual "stocks"
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double pointDist = logWidth / ( ( double ) datasetNum );
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// compute the position of the 0 axis
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double zeroXAxisI = axisPara->axisZeroLineStartY() - _dataRect.y();
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const int lineWidth = static_cast<int>( pointDist / 66.0 ) * TQMAX(params()->lineWidth(), 1);
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const int lineWidthD2 = lineWidth * 2 / 3;
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const bool noBrush = TQt::NoBrush == params()->bWChartBrush().style();
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// Loop over the datasets, draw one box and whisker shape for each series.
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for ( uint dataset = chartDatasetStart;
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dataset <= chartDatasetEnd;
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++dataset ) {
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if( dataset >= datasetStart &&
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dataset <= datasetEnd &&
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0 < calculateStats( *data, dataset ) ) {
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const TQColor color( params()->dataColor( dataset ) );
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// transform calculated values
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double drawUOF = stats[ KDChartParams::UpperOuterFence ] * pixelsPerUnit;
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double drawUIF = stats[ KDChartParams::UpperInnerFence ] * pixelsPerUnit;
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double drawQu3 = stats[ KDChartParams::Quartile3 ] * pixelsPerUnit;
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double drawMed = stats[ KDChartParams::Median ] * pixelsPerUnit;
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double drawQu1 = stats[ KDChartParams::Quartile1 ] * pixelsPerUnit;
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double drawLIF = stats[ KDChartParams::LowerInnerFence ] * pixelsPerUnit;
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double drawLOF = stats[ KDChartParams::LowerOuterFence ] * pixelsPerUnit;
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double drawMax = stats[ KDChartParams::MaxValue ] * pixelsPerUnit;
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double drawMin = stats[ KDChartParams::MinValue ] * pixelsPerUnit;
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double drawMean= stats[ KDChartParams::MeanValue ] * pixelsPerUnit;
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// get whisker values
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double drawUWhisker = TQMIN(drawUIF, drawMax);
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double drawLWhisker = TQMAX(drawLIF, drawMin);
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// get the box width
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const int boxWidth = TQMAX( 6, static_cast<int>( pointDist * 0.2 ) );
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// get marker size (for the outliers and/or for the median value)
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int markWidth = params()->bWChartOutValMarkerSize();
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bool drawOutliers = ( 0 != markWidth );
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if( drawOutliers ){
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if( 0 > markWidth)
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markWidth = TQMAX( 4, markWidth * boxWidth / -100 );
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else
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markWidth = TQMAX( 4, markWidth );
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}
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else
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markWidth = boxWidth * 25 / 100; // use the default for the Median marker
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painter->setPen( TQPen( color, lineWidth ) );
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painter->setBrush( params()->bWChartBrush() );
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// draw the box
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int boxWidthD2 = boxWidth / 2;
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int xPos = static_cast<int>(
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pointDist * ( (double)(dataset - chartDatasetStart) + 0.5 )
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- lineWidth / 2);
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painter->drawRect( xPos - boxWidthD2,
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static_cast<int>( zeroXAxisI - drawQu3 ),
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boxWidth,
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static_cast<int>( drawQu3 - drawQu1) + 1 );
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// draw the median
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painter->drawLine( xPos - boxWidthD2,
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static_cast<int>( zeroXAxisI - drawMed ),
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xPos - boxWidthD2 + boxWidth,
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static_cast<int>( zeroXAxisI - drawMed ) );
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// draw the whisker
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painter->drawLine( xPos - boxWidthD2,
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static_cast<int>( zeroXAxisI - drawUWhisker ),
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xPos - boxWidthD2 + boxWidth,
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static_cast<int>( zeroXAxisI - drawUWhisker ) );
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painter->drawLine( xPos,
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static_cast<int>( zeroXAxisI - drawUWhisker ),
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xPos,
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static_cast<int>( zeroXAxisI - drawQu3 ) );
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painter->drawLine( xPos - boxWidthD2,
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static_cast<int>( zeroXAxisI - drawLWhisker ),
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xPos - boxWidthD2 + boxWidth,
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static_cast<int>( zeroXAxisI - drawLWhisker ) );
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painter->drawLine( xPos,
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static_cast<int>( zeroXAxisI - drawLWhisker ),
|
|
|
|
xPos,
|
|
|
|
static_cast<int>( zeroXAxisI - drawQu1 ) );
|
|
|
|
// draw the values
|
|
|
|
int xPos2 = static_cast<int>(
|
|
|
|
pointDist * ( (double)(dataset - chartDatasetStart) + 0.5 )
|
|
|
|
- lineWidthD2 / 2);
|
|
|
|
int markWidthD2 = TQMAX(markWidth / 2, 2);
|
|
|
|
int markWidthD25 = TQMAX(static_cast<int>( 0.85 * markWidth / 2.0), 2);
|
|
|
|
int markWidthD35 = TQMAX(static_cast<int>( 0.85 * markWidth / 3.0), 2);
|
|
|
|
// draw the outliers
|
|
|
|
if( drawOutliers ){
|
|
|
|
const uint nMax = data->usedCols();
|
|
|
|
int drawVal;
|
|
|
|
TQVariant vVal;
|
|
|
|
for( uint i=0; i<nMax; ++i)
|
|
|
|
if( data->cellCoord( dataset, i, vVal, 1 ) &&
|
|
|
|
TQVariant::Double == vVal.type() ) {
|
|
|
|
drawVal = static_cast<int>( pixelsPerUnit * vVal.toDouble() );
|
|
|
|
if( drawLOF > drawVal || drawUOF < drawVal ) {
|
|
|
|
painter->setPen( TQt::NoPen );
|
|
|
|
painter->drawChord( xPos2 - markWidthD2,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) - markWidthD2,
|
|
|
|
markWidth,
|
|
|
|
markWidth,
|
|
|
|
0, 5760 );
|
|
|
|
painter->setPen( TQPen( color, lineWidthD2 ) );
|
|
|
|
painter->drawArc( xPos2 - markWidthD2,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) - markWidthD2,
|
|
|
|
markWidth,
|
|
|
|
markWidth,
|
|
|
|
0, 5760 );
|
|
|
|
} else if( drawLIF > drawVal || drawUIF < drawVal ) {
|
|
|
|
painter->setPen( TQt::NoPen );
|
|
|
|
painter->drawChord( xPos2 - markWidthD2,
|
|
|
|
static_cast<int>( zeroXAxisI - drawVal) - markWidthD2,
|
|
|
|
markWidth,
|
|
|
|
markWidth,
|
|
|
|
0, 5760 );
|
|
|
|
painter->setPen( TQPen( color, lineWidthD2 ) );
|
|
|
|
painter->drawLine( xPos2,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) - markWidthD2,
|
|
|
|
xPos2,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) + markWidthD2 );
|
|
|
|
painter->drawLine( xPos2 - markWidthD25,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) - markWidthD35,
|
|
|
|
xPos2 + markWidthD25,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) + markWidthD35 );
|
|
|
|
painter->drawLine( xPos2 + markWidthD25,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) - markWidthD35,
|
|
|
|
xPos2 - markWidthD25,
|
|
|
|
static_cast<int>(zeroXAxisI - drawVal) + markWidthD35 );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// draw the mean value
|
|
|
|
bool evenLineWidthD2 = floor( ((double)lineWidthD2)/2.0 ) == ((double)lineWidthD2)/2.0;
|
|
|
|
painter->setPen( params()->bWChartBrush().color() );
|
|
|
|
painter->drawChord( xPos2 - markWidthD2-1 - (evenLineWidthD2 ? 0 : 1),
|
|
|
|
static_cast<int>( zeroXAxisI - drawMean ) - markWidthD2 - 1,
|
|
|
|
markWidthD2*2 + (evenLineWidthD2 ? 2 : 3),
|
|
|
|
markWidthD2*2 + (evenLineWidthD2 ? 2 : 3),
|
|
|
|
0, 5760 );
|
|
|
|
if( noBrush ) {
|
|
|
|
// use different color brightness for the Mean marker
|
|
|
|
int h,s,v;
|
|
|
|
color.hsv(&h,&s,&v);
|
|
|
|
painter->setPen( TQPen( 128 > v ? color.light(150) : color.dark(150),
|
|
|
|
lineWidthD2 ) );
|
|
|
|
} else
|
|
|
|
painter->setPen( TQPen( color, lineWidthD2 ) );
|
|
|
|
painter->drawLine( xPos2 - markWidthD2 - (evenLineWidthD2 ? 0 : 1),
|
|
|
|
static_cast<int>( zeroXAxisI - drawMean ),
|
|
|
|
xPos2 + markWidthD2,
|
|
|
|
static_cast<int>( zeroXAxisI - drawMean ) );
|
|
|
|
painter->drawLine( xPos2 - (evenLineWidthD2 ? 0 : 1),
|
|
|
|
static_cast<int>( zeroXAxisI - drawMean ) - markWidthD2,
|
|
|
|
xPos2 - (evenLineWidthD2 ? 0 : 1),
|
|
|
|
static_cast<int>( zeroXAxisI - drawMean ) + markWidthD2 + (evenLineWidthD2 ? 0 : 1) );
|
|
|
|
|
|
|
|
// draw the statistical value texts
|
|
|
|
painter->setPen( TQt::NoPen );
|
|
|
|
for( int ii = KDChartParams::BWStatValSTART;
|
|
|
|
ii <= KDChartParams::BWStatValEND;
|
|
|
|
++ii ){
|
|
|
|
KDChartParams::BWStatVal i = (KDChartParams::BWStatVal)ii;
|
|
|
|
if( params()->bWChartPrintStatistics( i ) ) {
|
|
|
|
TQFont statFont( params()->bWChartStatisticsFont( i ) );
|
|
|
|
float nTxtHeight = statFont.pointSizeFloat();
|
|
|
|
if ( params()->bWChartStatisticsUseRelSize( i ) ) {
|
|
|
|
nTxtHeight = params()->bWChartStatisticsFontRelSize( i )
|
|
|
|
* boxWidth / 100;
|
|
|
|
statFont.setPointSizeFloat( nTxtHeight );
|
|
|
|
}
|
|
|
|
double drawStat = pixelsPerUnit * stats[i];
|
|
|
|
KDChartTextPiece statText( painter, TQString::number( stats[i] ),
|
|
|
|
statFont );
|
|
|
|
int tw = statText.width();
|
|
|
|
int xDelta = ( KDChartParams::MaxValue == i
|
|
|
|
|| KDChartParams::MeanValue == i
|
|
|
|
|| KDChartParams::MinValue == i )
|
|
|
|
? -1 * (tw + static_cast<int>( 1.3*boxWidthD2 ))
|
|
|
|
: static_cast<int>( 1.3*boxWidthD2 );
|
|
|
|
TQBrush brush( params()->bWChartStatisticsBrush( i ) );
|
|
|
|
painter->setBrush( brush );
|
|
|
|
int y = static_cast<int>( zeroXAxisI - drawStat - nTxtHeight/2);
|
|
|
|
painter->drawRect( xPos + xDelta - 1,
|
|
|
|
y,
|
|
|
|
tw + 2,
|
|
|
|
TQMAX(static_cast < int > ( nTxtHeight ), 8) + 1 );
|
|
|
|
statText.draw( painter,
|
|
|
|
xPos + xDelta,
|
|
|
|
y,
|
|
|
|
ourClipRect,
|
|
|
|
params()->bWChartStatisticsColor( i ),
|
|
|
|
0 );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} else
|
|
|
|
continue; // we cannot display this value
|
|
|
|
}
|
|
|
|
}
|