polarchartcategoryaxisradial.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/polarchartcategoryaxisradial_p.h> | ||||
#include <private/chartpresenter_p.h> | ||||
#include <private/abstractchartlayout_p.h> | ||||
#include <QtCharts/QCategoryAxis> | ||||
#include <QtCore/QDebug> | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
PolarChartCategoryAxisRadial::PolarChartCategoryAxisRadial(QCategoryAxis *axis, QGraphicsItem *item) | ||||
: PolarChartAxisRadial(axis, item, true) | ||||
{ | ||||
QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged())); | ||||
} | ||||
PolarChartCategoryAxisRadial::~PolarChartCategoryAxisRadial() | ||||
{ | ||||
} | ||||
QVector<qreal> PolarChartCategoryAxisRadial::calculateLayout() const | ||||
{ | ||||
QCategoryAxis *catAxis = static_cast<QCategoryAxis *>(axis()); | ||||
int tickCount = catAxis->categoriesLabels().count() + 1; | ||||
QVector<qreal> points; | ||||
if (tickCount < 2) | ||||
return points; | ||||
qreal range = max() - min(); | ||||
if (range > 0) { | ||||
points.resize(tickCount); | ||||
qreal scale = (axisGeometry().width() / 2) / range; | ||||
qreal angle; | ||||
for (int i = 0; i < tickCount; ++i) { | ||||
if (i < tickCount - 1) | ||||
angle = (catAxis->startValue(catAxis->categoriesLabels().at(i)) - min()) * scale; | ||||
else | ||||
angle = (catAxis->endValue(catAxis->categoriesLabels().at(i - 1)) - min()) * scale; | ||||
points[i] = angle; | ||||
} | ||||
} | ||||
return points; | ||||
} | ||||
void PolarChartCategoryAxisRadial::createAxisLabels(const QVector<qreal> &layout) | ||||
{ | ||||
Q_UNUSED(layout); | ||||
setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << QString()); | ||||
} | ||||
void PolarChartCategoryAxisRadial::handleCategoriesChanged() | ||||
{ | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
#include "moc_polarchartcategoryaxisradial_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||