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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 "percentbarchartitem_p.h"
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#include "bar_p.h"
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#include "qabstractbarseries_p.h"
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#include "qbarset.h"
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#include "qbarset_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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PercentBarChartItem::PercentBarChartItem(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 PercentBarChartItem::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> PercentBarChartItem::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 sum = 0;
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qreal categorySum = m_series->d_func()->categorySum(category);
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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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qreal topY = 0;
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qreal newSum = value + sum;
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if (newSum > 0)
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topY = 100 * newSum / categorySum;
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qreal bottomY = 0;
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if (sum > 0)
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bottomY = 100 * sum / categorySum;
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QPointF topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth/2, topY), m_validData);
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QPointF bottomRight;
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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 ? bottomY : domain()->minY()), m_validData);
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else
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bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth/2, set ? bottomY : 0), m_validData);
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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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sum = newSum;
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}
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}
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return layout;
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}
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void PercentBarChartItem::handleUpdatedBars()
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{
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// Handle changes in pen, brush, labels etc.
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int categoryCount = m_series->d_func()->categoryCount();
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int setCount = m_series->count();
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int itemIndex(0);
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static const QString valueTag(QLatin1String("@value"));
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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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QBarSetPrivate *barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
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Bar *bar = m_bars.at(itemIndex);
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bar->setPen(barSet->m_pen);
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bar->setBrush(barSet->m_brush);
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bar->update();
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QGraphicsTextItem *label = m_labels.at(itemIndex);
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int p = m_series->d_func()->percentageAt(set, category) * 100;
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QString vString(QString::number(p));
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vString.truncate(3);
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vString.append("%");
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QString valueLabel;
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if (m_series->labelsFormat().isEmpty()) {
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valueLabel = vString;
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} else {
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valueLabel = m_series->labelsFormat();
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valueLabel.replace(valueTag, QString::number(barSet->value(category)));
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}
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label->setHtml(valueLabel);
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label->setFont(barSet->m_labelFont);
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label->setDefaultTextColor(barSet->m_labelBrush.color());
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label->update();
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itemIndex++;
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}
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}
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}
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void PercentBarChartItem::handleLabelsPositionChanged()
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{
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positionLabels();
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}
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void PercentBarChartItem::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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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();
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else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase)
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yPos = m_layout.at(i).bottom() - label->boundingRect().height();
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else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd)
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yPos = m_layout.at(i).top() - label->boundingRect().height();
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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_percentbarchartitem_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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