barchartitem.cpp
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r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** Commercial License Usage | ||||
** Licensees holding valid commercial Qt licenses may use this file in | ||||
** accordance with the commercial license agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and The Qt Company. For licensing terms | ||||
** and conditions see https://www.qt.io/terms-conditions. For further | ||||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include <private/barchartitem_p.h> | ||||
#include <private/bar_p.h> | ||||
#include <private/qabstractbarseries_p.h> | ||||
#include <QtCharts/QBarSet> | ||||
#include <private/qbarset_p.h> | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
BarChartItem::BarChartItem(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 BarChartItem::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 + set/setCount * barWidth, domain()->minY()), m_validData); | ||||
bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/setCount * barWidth, domain()->minY()), m_validData); | ||||
} else { | ||||
topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + set/setCount * barWidth, 0), m_validData); | ||||
bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/setCount * barWidth, 0), m_validData); | ||||
} | ||||
if (!m_validData) | ||||
return; | ||||
rect.setTopLeft(topLeft); | ||||
rect.setBottomRight(bottomRight); | ||||
m_layout.append(rect.normalized()); | ||||
} | ||||
} | ||||
} | ||||
QVector<QRectF> BarChartItem::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 = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set)/(setCount) * barWidth, value), m_validData); | ||||
QPointF bottomRight; | ||||
if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) | ||||
bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/(setCount) * barWidth, domain()->minY()), m_validData); | ||||
else | ||||
bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/(setCount) * barWidth, 0), m_validData); | ||||
rect.setTopLeft(topLeft); | ||||
rect.setBottomRight(bottomRight); | ||||
layout.append(rect.normalized()); | ||||
} | ||||
} | ||||
return layout; | ||||
} | ||||
void BarChartItem::handleLabelsPositionChanged() | ||||
{ | ||||
positionLabels(); | ||||
} | ||||
void BarChartItem::positionLabels() | ||||
{ | ||||
positionLabelsVertical(); | ||||
} | ||||
#include "moc_barchartitem_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||