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horizontalbarchartitem.cpp
97 lines | 3.8 KiB | text/x-c | CppLexer
/ src / barchart / horizontal / bar / horizontalbarchartitem.cpp
/****************************************************************************
**
** 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 "horizontalbarchartitem_p.h"
#include "qabstractbarseries_p.h"
#include "qbarset_p.h"
#include "bar_p.h"
QTCOMMERCIALCHART_BEGIN_NAMESPACE
HorizontalBarChartItem::HorizontalBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item)
: AbstractBarChartItem(series, item)
{
}
void HorizontalBarChartItem::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::LogXYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) {
topLeft = domain()->calculateGeometryPoint(QPointF(domain()->minX(), category - barWidth / 2 + set/setCount * barWidth), m_validData);
bottomRight = domain()->calculateGeometryPoint(QPointF(domain()->minX(), category - barWidth / 2 + (set + 1)/setCount * barWidth), m_validData);
} else {
topLeft = domain()->calculateGeometryPoint(QPointF(0, category - barWidth / 2 + set/setCount * barWidth), m_validData);
bottomRight = domain()->calculateGeometryPoint(QPointF(0, category - barWidth / 2 + (set + 1)/setCount * barWidth), m_validData);
}
if (!m_validData)
return;
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
m_layout.append(rect.normalized());
}
}
}
QVector<QRectF> HorizontalBarChartItem::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++) {
for (int set = 0; set < setCount; set++) {
qreal value = m_series->barSets().at(set)->at(category);
QRectF rect;
QPointF topLeft;
if (domain()->type() == AbstractDomain::LogXYDomain || domain()->type() == AbstractDomain::LogXLogYDomain)
topLeft = domain()->calculateGeometryPoint(QPointF(domain()->minX(), category - barWidth / 2 + set/setCount * barWidth), m_validData);
else
topLeft = domain()->calculateGeometryPoint(QPointF(0, category - barWidth / 2 + set/setCount * barWidth), m_validData);
QPointF bottomRight = domain()->calculateGeometryPoint(QPointF(value, category - barWidth / 2 + (set + 1)/setCount * barWidth), m_validData);
if (!m_validData)
return QVector<QRectF>();
rect.setTopLeft(topLeft);
rect.setBottomRight(bottomRight);
layout.append(rect.normalized());
}
}
return layout;
}
#include "moc_horizontalbarchartitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE