File indexing completed on 2024-10-06 03:40:53

 /*
  * This file is part of KQuickCharts
  * SPDX-FileCopyrightText: 2019 Arjen Hiemstra <ahiemstra@heimr.nl>
  *
  * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
  */
 
 #include "XYChart.h"
 
 #include "RangeGroup.h"
 #include "datasource/ChartDataSource.h"
 
 bool operator==(const ComputedRange &first, const ComputedRange &second)
 {
     return first.startX == second.startX && first.endX == second.endX && qFuzzyCompare(first.startY, second.startY) && qFuzzyCompare(first.endY, second.endY);
 }
 
 XYChart::XYChart(QQuickItem *parent)
     : Chart(parent)
 {
     m_xRange = new RangeGroup{this};
     connect(m_xRange, &RangeGroup::rangeChanged, this, &XYChart::updateComputedRange);
     m_yRange = new RangeGroup{this};
     connect(m_yRange, &RangeGroup::rangeChanged, this, &XYChart::updateComputedRange);
 }
 
 RangeGroup *XYChart::xRange() const
 {
     return m_xRange;
 }
 
 RangeGroup *XYChart::yRange() const
 {
     return m_yRange;
 }
 
 XYChart::Direction XYChart::direction() const
 {
     return m_direction;
 }
 
 void XYChart::setDirection(XYChart::Direction newDirection)
 {
     if (newDirection == m_direction) {
         return;
     }
 
     m_direction = newDirection;
     onDataChanged();
     Q_EMIT directionChanged();
 }
 
 bool XYChart::stacked() const
 {
     return m_stacked;
 }
 
 void XYChart::setStacked(bool newStacked)
 {
     if (newStacked == m_stacked) {
         return;
     }
 
     m_stacked = newStacked;
     onDataChanged();
     Q_EMIT stackedChanged();
 }
 
 ComputedRange XYChart::computedRange() const
 {
     return m_computedRange;
 }
 
 void XYChart::updateComputedRange()
 {
     if (valueSources().count() == 0) {
         return;
     }
 
     ComputedRange result;
 
     auto xRange = m_xRange->calculateRange(
         valueSources(),
         [](ChartDataSource *) {
             return 0;
         },
         [](ChartDataSource *source) {
             return source->itemCount();
         });
     result.startX = xRange.start;
     result.endX = xRange.end;
     result.distanceX = xRange.distance;
 
     auto maximumY = [this, xRange](ChartDataSource *source) {
         if (!m_stacked) {
             return source->maximum().toDouble();
         } else {
             qreal max = std::numeric_limits<qreal>::min();
             for (int i = xRange.start; i < xRange.end; ++i) {
                 qreal yDistance = 0.0;
                 for (auto source : valueSources()) {
                     yDistance += source->item(i).toDouble();
                 }
                 max = std::max(max, yDistance);
             }
             return max;
         }
     };
 
     auto yRange = m_yRange->calculateRange(
         valueSources(),
         [](ChartDataSource *source) {
             return std::min(0.0, source->minimum().toDouble());
         },
         maximumY);
     result.startY = yRange.start;
     result.endY = yRange.end;
     result.distanceY = yRange.distance;
 
     setComputedRange(result);
 }
 
 void XYChart::setComputedRange(ComputedRange range)
 {
     if (range == m_computedRange) {
         return;
     }
 
     m_computedRange = range;
     Q_EMIT computedRangeChanged();
 }
 
 QDebug operator<<(QDebug debug, const ComputedRange &range)
 {
     debug << "Range: startX" << range.startX << "endX" << range.endX << "distance" << range.distanceX << "startY" << range.startY << "endY" << range.endY
           << "distance" << range.distanceY;
     return debug;
 }
 
 #include "moc_XYChart.cpp"