polarchartcategoryaxisangular.cpp
80 lines
| 2.4 KiB
| text/x-c
|
CppLexer
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r2483 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2013 Digia Plc | ||||
** All rights reserved. | ||||
** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
** | ||||
|
r2574 | ** This file is part of the Qt Enterprise Charts Add-on. | ||
|
r2483 | ** | ||
** $QT_BEGIN_LICENSE$ | ||||
|
r2574 | ** Licensees holding valid Qt Enterprise licenses may use this file in | ||
** accordance with the Qt Enterprise License Agreement provided with the | ||||
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r2483 | ** 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 | ||||