diff options
Diffstat (limited to 'src/charts/barchart/vertical/percent/percentbarchartitem.cpp')
| -rw-r--r-- | src/charts/barchart/vertical/percent/percentbarchartitem.cpp | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/charts/barchart/vertical/percent/percentbarchartitem.cpp b/src/charts/barchart/vertical/percent/percentbarchartitem.cpp new file mode 100644 index 00000000..1e0bbbae --- /dev/null +++ b/src/charts/barchart/vertical/percent/percentbarchartitem.cpp @@ -0,0 +1,171 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the Qt Enterprise Charts Add-on. +** +** $QT_BEGIN_LICENSE$ +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "percentbarchartitem_p.h" +#include "bar_p.h" +#include "qabstractbarseries_p.h" +#include "qbarset.h" +#include "qbarset_p.h" + +QT_CHARTS_BEGIN_NAMESPACE + +PercentBarChartItem::PercentBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) : + AbstractBarChartItem(series, item) +{ + connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)), + this, SLOT(handleLabelsPositionChanged())); + connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels())); +} + +void PercentBarChartItem::initializeLayout() +{ + qreal categoryCount = m_series->d_func()->categoryCount(); + qreal setCount = m_series->count(); + qreal barWidth = m_series->d_func()->barWidth(); + + m_layout.clear(); + for(int category = 0; category < categoryCount; category++) { + for (int set = 0; set < setCount; set++) { + QRectF rect; + QPointF topLeft; + QPointF bottomRight; + + if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) { + topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, domain()->minY()), m_validData); + bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, domain()->minY()), m_validData); + } else { + topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2, 0), m_validData); + bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth / 2, 0), m_validData); + } + + if (!m_validData) + return; + + rect.setTopLeft(topLeft); + rect.setBottomRight(bottomRight); + m_layout.append(rect.normalized()); + } + } +} + +QVector<QRectF> PercentBarChartItem::calculateLayout() +{ + QVector<QRectF> layout; + + // Use temporary qreals for accuracy + qreal categoryCount = m_series->d_func()->categoryCount(); + qreal setCount = m_series->count(); + qreal barWidth = m_series->d_func()->barWidth(); + + for(int category = 0; category < categoryCount; category++) { + qreal sum = 0; + qreal categorySum = m_series->d_func()->categorySum(category); + for (int set = 0; set < setCount; set++) { + qreal value = m_series->barSets().at(set)->at(category); + QRectF rect; + qreal topY = 0; + qreal newSum = value + sum; + if (newSum > 0) + topY = 100 * newSum / categorySum; + qreal bottomY = 0; + if (sum > 0) + bottomY = 100 * sum / categorySum; + QPointF topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth/2, topY), m_validData); + QPointF bottomRight; + if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) + bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth/2, set ? bottomY : domain()->minY()), m_validData); + else + bottomRight = domain()->calculateGeometryPoint(QPointF(category + barWidth/2, set ? bottomY : 0), m_validData); + + rect.setTopLeft(topLeft); + rect.setBottomRight(bottomRight); + layout.append(rect.normalized()); + sum = newSum; + } + } + return layout; +} + +void PercentBarChartItem::handleUpdatedBars() +{ + // Handle changes in pen, brush, labels etc. + int categoryCount = m_series->d_func()->categoryCount(); + int setCount = m_series->count(); + int itemIndex(0); + static const QString valueTag(QLatin1String("@value")); + + for (int category = 0; category < categoryCount; category++) { + for (int set = 0; set < setCount; set++) { + QBarSetPrivate *barSet = m_series->d_func()->barsetAt(set)->d_ptr.data(); + Bar *bar = m_bars.at(itemIndex); + bar->setPen(barSet->m_pen); + bar->setBrush(barSet->m_brush); + bar->update(); + + QGraphicsTextItem *label = m_labels.at(itemIndex); + qreal p = m_series->d_func()->percentageAt(set, category) * 100.0; + QString vString(presenter()->numberToString(p, 'f', 0)); + QString valueLabel; + if (m_series->labelsFormat().isEmpty()) { + vString.append(QStringLiteral("%")); + valueLabel = vString; + } else { + valueLabel = m_series->labelsFormat(); + valueLabel.replace(valueTag, vString); + } + label->setHtml(valueLabel); + label->setFont(barSet->m_labelFont); + label->setDefaultTextColor(barSet->m_labelBrush.color()); + label->update(); + itemIndex++; + } + } +} + +void PercentBarChartItem::handleLabelsPositionChanged() +{ + positionLabels(); +} + +void PercentBarChartItem::positionLabels() +{ + for (int i = 0; i < m_layout.count(); i++) { + QGraphicsTextItem *label = m_labels.at(i); + qreal xPos = m_layout.at(i).center().x() - label->boundingRect().center().x(); + qreal yPos = 0; + + int offset = m_bars.at(i)->pen().width() / 2 + 2; + if (m_series->labelsPosition() == QAbstractBarSeries::LabelsCenter) + yPos = m_layout.at(i).center().y() - label->boundingRect().center().y(); + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideEnd) + yPos = m_layout.at(i).top() - offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase) + yPos = m_layout.at(i).bottom() - label->boundingRect().height() + offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd) + yPos = m_layout.at(i).top() - label->boundingRect().height() + offset; + + label->setPos(xPos, yPos); + label->setZValue(zValue() + 1); + } +} + +#include "moc_percentbarchartitem_p.cpp" + +QT_CHARTS_END_NAMESPACE |