polarchartcategoryaxisradial.cpp
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| text/x-c
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r2483 | /**************************************************************************** | ||
** | ||||
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r2776 | ** Copyright (C) 2015 The Qt Company Ltd | ||
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r2483 | ** All rights reserved. | ||
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r2776 | ** For any questions to The Qt Company, please use contact form at http://qt.io | ||
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r2483 | ** | ||
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r2740 | ** This file is part of the Qt Charts module. | ||
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r2483 | ** | ||
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
** accordance with the Qt License Agreement provided with the Software | ||||
** or, alternatively, in accordance with the terms contained in a written | ||||
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r2776 | ** agreement between you and The Qt Company. | ||
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r2483 | ** | ||
** If you have questions regarding the use of this file, please use | ||||
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r2740 | ** contact form at http://qt.io | ||
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r2483 | ** | ||
****************************************************************************/ | ||||
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r2714 | #include <private/polarchartcategoryaxisradial_p.h> | ||
#include <private/chartpresenter_p.h> | ||||
#include <private/abstractchartlayout_p.h> | ||||
#include <QtCharts/QCategoryAxis> | ||||
#include <QtCore/QDebug> | ||||
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r2483 | |||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r2483 | |||
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); | ||||
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r2712 | setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << QString()); | ||
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r2483 | } | ||
void PolarChartCategoryAxisRadial::handleCategoriesChanged() | ||||
{ | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
#include "moc_polarchartcategoryaxisradial_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||