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/****************************************************************************
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**
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** Copyright (C) 2012 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 Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial 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 "stackedbarchartitem_p.h"
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#include "bar_p.h"
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#include "qbarset_p.h"
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#include "qabstractbarseries_p.h"
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#include "qbarset.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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StackedBarChartItem::StackedBarChartItem(QAbstractBarSeries *series, ChartPresenter *presenter) :
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AbstractBarChartItem(series, presenter)
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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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bool barsVisible = m_series->isVisible();
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// Domain:
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qreal width = geometry().width();
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qreal height = geometry().height();
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qreal rangeY = m_domainMaxY - m_domainMinY;
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qreal rangeX = m_domainMaxX - m_domainMinX;
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qreal scaleY = (height / rangeY);
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qreal scaleX = (width / rangeX);
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qreal rectWidth = scaleX * m_series->d_func()->barWidth();
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int itemIndex(0);
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for (int category = 0; category < categoryCount; category++) {
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qreal yMax = height + scaleY * m_domainMinY + geometry().top();
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qreal yMin = height + scaleY * m_domainMinY + geometry().top();
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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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qreal xPos = (barSet->pos(category) - m_domainMinX) * scaleX + geometry().left() - rectWidth / 2;
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qreal rectHeight = barSet->value(category) * scaleY;
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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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if (qFuzzyCompare(rectHeight, 0))
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bar->setVisible(false);
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else
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bar->setVisible(barsVisible);
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QGraphicsSimpleTextItem *label = m_labels.at(itemIndex);
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if (!qFuzzyCompare(barSet->value(category), 0))
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label->setText(QString::number(barSet->value(category)));
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else
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label->setText(QString(""));
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label->setFont(barSet->m_labelFont);
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label->setBrush(barSet->m_labelBrush);
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if (rectHeight < 0) {
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QRectF rect(xPos, yMax - rectHeight, rectWidth, rectHeight);
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layout.append(rect);
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label->setPos(xPos + (rect.width() / 2 - label->boundingRect().width() / 2),
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yMax - rectHeight / 2 - label->boundingRect().height() / 2);
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yMax -= rectHeight;
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} else {
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QRectF rect(xPos, yMin - rectHeight, rectWidth, rectHeight);
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layout.append(rect);
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label->setPos(xPos + (rect.width() / 2 - label->boundingRect().width() / 2),
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yMin - rectHeight / 2 - label->boundingRect().height() / 2);
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yMin -= rectHeight;
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}
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itemIndex++;
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}
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}
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return layout;
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}
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#include "moc_stackedbarchartitem_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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