diff options
Diffstat (limited to 'src/charts/axis/categoryaxis/polarchartcategoryaxisradial.cpp')
-rw-r--r-- | src/charts/axis/categoryaxis/polarchartcategoryaxisradial.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/charts/axis/categoryaxis/polarchartcategoryaxisradial.cpp b/src/charts/axis/categoryaxis/polarchartcategoryaxisradial.cpp new file mode 100644 index 00000000..60b77f0c --- /dev/null +++ b/src/charts/axis/categoryaxis/polarchartcategoryaxisradial.cpp @@ -0,0 +1,79 @@ +/**************************************************************************** +** +** Copyright (C) 2014 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 Enterprise Charts Add-on. +** +** $QT_BEGIN_LICENSE$ +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise 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 "polarchartcategoryaxisradial_p.h" +#include "chartpresenter_p.h" +#include "abstractchartlayout_p.h" +#include "qcategoryaxis.h" +#include <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 |