File indexing completed on 2024-05-12 15:54:18
0001 /* 0002 * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved. 0003 * 0004 * This file is part of the KD Chart library. 0005 * 0006 * This program is free software; you can redistribute it and/or 0007 * modify it under the terms of the GNU General Public License as 0008 * published by the Free Software Foundation; either version 2 of 0009 * the License, or (at your option) any later version. 0010 * 0011 * This program is distributed in the hope that it will be useful, 0012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 0013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0014 * GNU General Public License for more details. 0015 * 0016 * You should have received a copy of the GNU General Public License 0017 * along with this program. If not, see <https://www.gnu.org/licenses/>. 0018 */ 0019 0020 #include "KChartMeasure.h" 0021 0022 #include <KChartAbstractArea.h> 0023 #include <KChartCartesianCoordinatePlane.h> 0024 #include <KChartTextAttributes.h> 0025 #include <KChartFrameAttributes.h> 0026 #include <KChartBackgroundAttributes.h> 0027 #include "KChartMath_p.h" 0028 0029 #include <QWidget> 0030 0031 namespace KChart { 0032 0033 0034 Measure::Measure() 0035 : mValue( 0.0 ), 0036 mMode( KChartEnums::MeasureCalculationModeAuto ), 0037 mArea( nullptr ), 0038 mOrientation( KChartEnums::MeasureOrientationAuto ) 0039 { 0040 // this bloc left empty intentionally 0041 } 0042 0043 Measure::Measure( qreal value, 0044 KChartEnums::MeasureCalculationMode mode, 0045 KChartEnums::MeasureOrientation orientation ) 0046 : mValue( value ), 0047 mMode( mode ), 0048 mArea( nullptr ), 0049 mOrientation( orientation ) 0050 { 0051 // this bloc left empty intentionally 0052 } 0053 0054 Measure::Measure( const Measure& r ) 0055 : mValue( r.value() ), 0056 mMode( r.calculationMode() ), 0057 mArea( r.referenceArea() ), 0058 mOrientation( r.referenceOrientation() ) 0059 { 0060 // this bloc left empty intentionally 0061 } 0062 0063 Measure & Measure::operator=( const Measure& r ) 0064 { 0065 if ( this != &r ) { 0066 mValue = r.value(); 0067 mMode = r.calculationMode(); 0068 mArea = r.referenceArea(); 0069 mOrientation = r.referenceOrientation(); 0070 } 0071 0072 return *this; 0073 } 0074 0075 0076 qreal Measure::calculatedValue( const QSizeF& autoSize, 0077 KChartEnums::MeasureOrientation autoOrientation) const 0078 { 0079 if ( mMode == KChartEnums::MeasureCalculationModeAbsolute ) { 0080 return mValue; 0081 } else { 0082 qreal value = 0.0; 0083 const QObject theAutoArea; 0084 const QObject* autoArea = &theAutoArea; 0085 const QObject* area = mArea ? mArea : autoArea; 0086 KChartEnums::MeasureOrientation orientation = mOrientation; 0087 switch ( mMode ) { 0088 case KChartEnums::MeasureCalculationModeAuto: 0089 area = autoArea; 0090 orientation = autoOrientation; 0091 break; 0092 case KChartEnums::MeasureCalculationModeAutoArea: 0093 area = autoArea; 0094 break; 0095 case KChartEnums::MeasureCalculationModeAutoOrientation: 0096 orientation = autoOrientation; 0097 break; 0098 case KChartEnums::MeasureCalculationModeAbsolute: // fall through intended 0099 case KChartEnums::MeasureCalculationModeRelative: 0100 break; 0101 } 0102 if ( area ) { 0103 QSizeF size; 0104 if ( area == autoArea ) 0105 size = autoSize; 0106 else 0107 size = sizeOfArea( area ); 0108 //qDebug() << ( area == autoArea ) << "size" << size; 0109 qreal referenceValue = 0; 0110 switch ( orientation ) { 0111 case KChartEnums::MeasureOrientationAuto: // fall through intended 0112 case KChartEnums::MeasureOrientationMinimum: 0113 referenceValue = qMin( size.width(), size.height() ); 0114 break; 0115 case KChartEnums::MeasureOrientationMaximum: 0116 referenceValue = qMax( size.width(), size.height() ); 0117 break; 0118 case KChartEnums::MeasureOrientationHorizontal: 0119 referenceValue = size.width(); 0120 break; 0121 case KChartEnums::MeasureOrientationVertical: 0122 referenceValue = size.height(); 0123 break; 0124 } 0125 value = mValue / 1000.0 * referenceValue; 0126 } 0127 return value; 0128 } 0129 } 0130 0131 0132 qreal Measure::calculatedValue( const QObject* autoArea, 0133 KChartEnums::MeasureOrientation autoOrientation) const 0134 { 0135 return calculatedValue( sizeOfArea( autoArea ), autoOrientation); 0136 } 0137 0138 0139 const QSizeF Measure::sizeOfArea( const QObject* area ) const 0140 { 0141 QSizeF size; 0142 const CartesianCoordinatePlane* plane = dynamic_cast<const CartesianCoordinatePlane*>( area ); 0143 if ( false ) { 0144 size = plane->visibleDiagramArea().size(); 0145 } else { 0146 const AbstractArea* kdcArea = dynamic_cast<const AbstractArea*>(area); 0147 if ( kdcArea ) { 0148 size = kdcArea->geometry().size(); 0149 //qDebug() << "Measure::sizeOfArea() found kdcArea with size" << size; 0150 } else { 0151 const QWidget* widget = dynamic_cast<const QWidget*>(area); 0152 if ( widget ) { 0153 /* ATTENTION: Using the layout does not work: The Legend will never get the right size then! 0154 const QLayout * layout = widget->layout(); 0155 if ( layout ) { 0156 size = layout->geometry().size(); 0157 //qDebug() << "Measure::sizeOfArea() found widget with layout size" << size; 0158 } else*/ 0159 { 0160 size = widget->geometry().size(); 0161 //qDebug() << "Measure::sizeOfArea() found widget with size" << size; 0162 } 0163 } else if ( mMode != KChartEnums::MeasureCalculationModeAbsolute ) { 0164 size = QSizeF(1.0, 1.0); 0165 //qDebug("Measure::sizeOfArea() got no valid area."); 0166 } 0167 } 0168 } 0169 const QPair< qreal, qreal > factors 0170 = GlobalMeasureScaling::instance()->currentFactors(); 0171 return QSizeF(size.width() * factors.first, size.height() * factors.second); 0172 } 0173 0174 0175 bool Measure::operator==( const Measure& r ) const 0176 { 0177 return( mValue == r.value() && 0178 mMode == r.calculationMode() && 0179 mArea == r.referenceArea() && 0180 mOrientation == r.referenceOrientation() ); 0181 } 0182 0183 GlobalMeasureScaling::GlobalMeasureScaling() : 0184 m_paintDevice( nullptr ) 0185 { 0186 mFactors.push( qMakePair(qreal(1.0), qreal(1.0)) ); 0187 } 0188 0189 GlobalMeasureScaling::~GlobalMeasureScaling() 0190 { 0191 // this space left empty intentionally 0192 } 0193 0194 GlobalMeasureScaling* GlobalMeasureScaling::instance() 0195 { 0196 static GlobalMeasureScaling instance; 0197 return &instance; 0198 } 0199 0200 void GlobalMeasureScaling::setFactors(qreal factorX, qreal factorY) 0201 { 0202 instance()->mFactors.push( qMakePair(factorX, factorY) ); 0203 } 0204 0205 void GlobalMeasureScaling::resetFactors() 0206 { 0207 // never remove the initial (1.0. 1.0) setting 0208 if ( instance()->mFactors.count() > 1 ) 0209 instance()->mFactors.pop(); 0210 } 0211 0212 const QPair< qreal, qreal > GlobalMeasureScaling::currentFactors() 0213 { 0214 return instance()->mFactors.top(); 0215 } 0216 0217 void GlobalMeasureScaling::setPaintDevice( QPaintDevice* paintDevice ) 0218 { 0219 instance()->m_paintDevice = paintDevice; 0220 } 0221 0222 QPaintDevice* GlobalMeasureScaling::paintDevice() 0223 { 0224 return instance()->m_paintDevice; 0225 } 0226 0227 } 0228 0229 #if !defined(QT_NO_DEBUG_STREAM) 0230 QDebug operator<<(QDebug dbg, const KChart::Measure& m) 0231 { 0232 dbg << "KChart::Measure(" 0233 << "value="<<m.value() 0234 << "calculationmode="<<m.calculationMode() 0235 << "referencearea="<<m.referenceArea() 0236 << "referenceorientation="<<m.referenceOrientation() 0237 << ")"; 0238 return dbg; 0239 } 0240 #endif /* QT_NO_DEBUG_STREAM */