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Diffstat (limited to 'src/axis/categoryaxis/polarchartcategoryaxisangular.cpp')
-rw-r--r-- | src/axis/categoryaxis/polarchartcategoryaxisangular.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/axis/categoryaxis/polarchartcategoryaxisangular.cpp b/src/axis/categoryaxis/polarchartcategoryaxisangular.cpp new file mode 100644 index 00000000..ead087f8 --- /dev/null +++ b/src/axis/categoryaxis/polarchartcategoryaxisangular.cpp @@ -0,0 +1,80 @@ +/**************************************************************************** +** +** Copyright (C) 2013 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 "polarchartcategoryaxisangular_p.h" +#include "chartpresenter_p.h" +#include "abstractchartlayout_p.h" +#include "qcategoryaxis.h" +#include <QDebug> + +QTCOMMERCIALCHART_BEGIN_NAMESPACE + +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); + setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << ""); +} + +void PolarChartCategoryAxisAngular::handleCategoriesChanged() +{ + QGraphicsLayoutItem::updateGeometry(); + presenter()->layout()->invalidate(); +} + + +#include "moc_polarchartcategoryaxisangular_p.cpp" + +QTCOMMERCIALCHART_END_NAMESPACE |