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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Enterprise Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <private/stackedbarchartitem_p.h>
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#include <private/bar_p.h>
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#include <private/qbarset_p.h>
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#include <private/qabstractbarseries_p.h>
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#include <QtCharts/QBarSet>
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QT_CHARTS_BEGIN_NAMESPACE
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StackedBarChartItem::StackedBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) :
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AbstractBarChartItem(series, item)
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{
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connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)),
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this, SLOT(handleLabelsPositionChanged()));
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connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels()));
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}
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void StackedBarChartItem::initializeLayout()
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{
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qreal categoryCount = m_series->d_func()->categoryCount();
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qreal setCount = m_series->count();
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qreal barWidth = m_series->d_func()->barWidth();
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m_layout.clear();
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for(int category = 0; category < categoryCount; category++) {
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for (int set = 0; set < setCount; set++) {
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QRectF rect;
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QPointF topLeft;
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QPointF bottomRight;
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if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) {
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topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, domain()->minY()), m_validData);
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bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, domain()->minY()), m_validData);
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} else {
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topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, 0), m_validData);
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bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, 0), m_validData);
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}
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if (!m_validData)
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return;
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rect.setTopLeft(topLeft);
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rect.setBottomRight(bottomRight);
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m_layout.append(rect.normalized());
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}
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}
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}
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QVector<QRectF> StackedBarChartItem::calculateLayout()
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{
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QVector<QRectF> layout;
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// Use temporary qreals for accuracy
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qreal categoryCount = m_series->d_func()->categoryCount();
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qreal setCount = m_series->count();
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qreal barWidth = m_series->d_func()->barWidth();
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for(int category = 0; category < categoryCount; category++) {
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qreal positiveSum = 0;
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qreal negativeSum = 0;
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for (int set = 0; set < setCount; set++) {
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qreal value = m_series->barSets().at(set)->at(category);
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QRectF rect;
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QPointF topLeft;
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QPointF bottomRight;
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if (value < 0) {
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bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, value + negativeSum), m_validData);
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if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain)
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topLeft = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? negativeSum : domain()->minY()), m_validData);
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else
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topLeft = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? negativeSum : 0), m_validData);
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negativeSum += value;
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} else {
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topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, value + positiveSum), m_validData);
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if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain)
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bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? positiveSum : domain()->minY()), m_validData);
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else
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bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, set ? positiveSum : 0), m_validData);
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positiveSum += value;
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}
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rect.setTopLeft(topLeft);
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rect.setBottomRight(bottomRight);
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layout.append(rect.normalized());
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}
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}
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return layout;
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}
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void StackedBarChartItem::handleLabelsPositionChanged()
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{
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positionLabels();
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}
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void StackedBarChartItem::positionLabels()
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{
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for (int i = 0; i < m_layout.count(); i++) {
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QGraphicsTextItem *label = m_labels.at(i);
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qreal xPos = m_layout.at(i).center().x() - label->boundingRect().center().x();
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qreal yPos = 0;
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int offset = m_bars.at(i)->pen().width() / 2 + 2;
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if (m_series->labelsPosition() == QAbstractBarSeries::LabelsCenter)
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yPos = m_layout.at(i).center().y() - label->boundingRect().center().y();
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else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideEnd)
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yPos = m_layout.at(i).top() - offset;
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else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase)
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yPos = m_layout.at(i).bottom() - label->boundingRect().height() + offset;
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else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd)
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yPos = m_layout.at(i).top() - label->boundingRect().height() + offset;
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label->setPos(xPos, yPos);
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label->setZValue(zValue() + 1);
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}
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}
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#include "moc_stackedbarchartitem_p.cpp"
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QT_CHARTS_END_NAMESPACE
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