polarchartvalueaxisangular.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 | ||||
** | ||||
** 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 "polarchartvalueaxisangular_p.h" | ||||
#include "chartpresenter_p.h" | ||||
#include "abstractchartlayout_p.h" | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
PolarChartValueAxisAngular::PolarChartValueAxisAngular(QValueAxis *axis, QGraphicsItem *item) | ||||
: PolarChartAxisAngular(axis, item) | ||||
{ | ||||
QObject::connect(axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int))); | ||||
QObject::connect(axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString))); | ||||
} | ||||
PolarChartValueAxisAngular::~PolarChartValueAxisAngular() | ||||
{ | ||||
} | ||||
QVector<qreal> PolarChartValueAxisAngular::calculateLayout() const | ||||
{ | ||||
int tickCount = static_cast<QValueAxis *>(axis())->tickCount(); | ||||
Q_ASSERT(tickCount >= 2); | ||||
QVector<qreal> points; | ||||
points.resize(tickCount); | ||||
const qreal d = 360.0 / qreal(tickCount - 1); | ||||
for (int i = 0; i < tickCount; ++i) { | ||||
qreal angularCoordinate = qreal(i) * d; | ||||
points[i] = angularCoordinate; | ||||
} | ||||
return points; | ||||
} | ||||
void PolarChartValueAxisAngular::createAxisLabels(const QVector<qreal> &layout) | ||||
{ | ||||
QStringList labelList = createValueLabels(min(), max(), layout.size(), static_cast<QValueAxis *>(axis())->labelFormat()); | ||||
setLabels(labelList); | ||||
} | ||||
void PolarChartValueAxisAngular::handleTickCountChanged(int tick) | ||||
{ | ||||
Q_UNUSED(tick); | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
if (presenter()) | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
void PolarChartValueAxisAngular::handleLabelFormatChanged(const QString &format) | ||||
{ | ||||
Q_UNUSED(format); | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
if (presenter()) | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
#include "moc_polarchartvalueaxisangular_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||