horizontalstackedbarchartitem.cpp
95 lines
| 3.3 KiB
| text/x-c
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CppLexer
sauimone
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r1685 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2012 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 Commercial Charts Add-on. | ||||
** | ||||
** $QT_BEGIN_LICENSE$ | ||||
** Licensees holding valid Qt Commercial licenses may use this file in | ||||
** accordance with the Qt Commercial 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 "horizontalstackedbarchartitem_p.h" | ||||
#include "qabstractbarseries_p.h" | ||||
#include "qbarset_p.h" | ||||
#include "bar_p.h" | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
HorizontalStackedBarChartItem::HorizontalStackedBarChartItem(QAbstractBarSeries *series, ChartPresenter *presenter) : | ||||
AbstractBarChartItem(series, presenter) | ||||
{ | ||||
} | ||||
QVector<QRectF> HorizontalStackedBarChartItem::calculateLayout() | ||||
{ | ||||
QVector<QRectF> layout; | ||||
// Use temporary qreals for accuracy | ||||
qreal categoryCount = m_series->d_func()->categoryCount(); | ||||
qreal setCount = m_series->count(); | ||||
bool barsVisible = m_series->isVisible(); | ||||
// Domain: | ||||
qreal width = geometry().width(); | ||||
qreal height = geometry().height(); | ||||
qreal rangeY = m_domainMaxY - m_domainMinY; | ||||
qreal rangeX = m_domainMaxX - m_domainMinX; | ||||
qreal scaleY = (height / rangeY); | ||||
qreal scaleX = (width / rangeX); | ||||
qreal barHeight = scaleY * m_series->d_func()->barWidth(); // On horizontal chart barWidth of the barseries means height of the rect. | ||||
int itemIndex(0); | ||||
for (int category = 0; category < categoryCount; category++) { | ||||
qreal xPos = rangeX * m_domainMinX + geometry().left(); | ||||
for (int set = 0; set < setCount; set++) { | ||||
QBarSetPrivate* barSet = m_series->d_func()->barsetAt(set)->d_ptr.data(); | ||||
qreal yPos = -(barSet->pos(category) - m_domainMinY -0.5) * scaleY + m_rect.bottom() - barHeight/2; | ||||
qreal barWidth = barSet->value(category) * scaleX; | ||||
Bar* bar = m_bars.at(itemIndex); | ||||
QRectF rect(xPos, yPos - barHeight, barWidth, barHeight); | ||||
layout.append(rect); | ||||
bar->setPen(barSet->m_pen); | ||||
bar->setBrush(barSet->m_brush); | ||||
if (qFuzzyIsNull(barHeight)) { | ||||
bar->setVisible(false); | ||||
} else { | ||||
bar->setVisible(barsVisible); | ||||
} | ||||
QGraphicsSimpleTextItem* label = m_labels.at(itemIndex); | ||||
if (!qFuzzyIsNull(barSet->value(category))) { | ||||
label->setText(QString::number(barSet->value(category))); | ||||
} else { | ||||
label->setText(QString("")); | ||||
} | ||||
label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2) | ||||
,yPos - barHeight/2 - label->boundingRect().height()/2); | ||||
label->setFont(barSet->m_labelFont); | ||||
label->setBrush(barSet->m_labelBrush); | ||||
itemIndex++; | ||||
xPos += barWidth; | ||||
} | ||||
} | ||||
return layout; | ||||
} | ||||
#include "moc_horizontalstackedbarchartitem_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||