polarchartcategoryaxisangular.cpp
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| text/x-c
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CppLexer
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r2854 | /**************************************************************************** | ||
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r2483 | ** | ||
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r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
** Contact: https://www.qt.io/licensing/ | ||||
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r2483 | ** | ||
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r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
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r2483 | ** | ||
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r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
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r2845 | ** 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 | ||||
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r2854 | ** and conditions see https://www.qt.io/terms-conditions. For further | ||
** information use the contact form at https://www.qt.io/contact-us. | ||||
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** GNU General Public License Usage | ||||
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r2483 | ** | ||
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r2845 | ** $QT_END_LICENSE$ | ||
** | ||||
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r2854 | ****************************************************************************/ | ||
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r2483 | |||
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r2714 | #include <private/polarchartcategoryaxisangular_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 | |||
PolarChartCategoryAxisAngular::PolarChartCategoryAxisAngular(QCategoryAxis *axis, QGraphicsItem *item) | ||||
: PolarChartAxisAngular(axis, item, true) | ||||
{ | ||||
QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged())); | ||||
} | ||||
PolarChartCategoryAxisAngular::~PolarChartCategoryAxisAngular() | ||||
{ | ||||
} | ||||
QVector<qreal> PolarChartCategoryAxisAngular::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 = 360.0 / 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 PolarChartCategoryAxisAngular::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 PolarChartCategoryAxisAngular::handleCategoriesChanged() | ||||
{ | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
#include "moc_polarchartcategoryaxisangular_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||