polarchartvalueaxisradial.cpp
77 lines
| 2.4 KiB
| text/x-c
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CppLexer
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r2483 | /**************************************************************************** | ||
** | ||||
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r2776 | ** Copyright (C) 2015 The Qt Company Ltd | ||
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r2483 | ** All rights reserved. | ||
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r2776 | ** For any questions to The Qt Company, please use contact form at http://qt.io | ||
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r2483 | ** | ||
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r2740 | ** This file is part of the Qt Charts module. | ||
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r2483 | ** | ||
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
** accordance with the Qt License Agreement provided with the Software | ||||
** or, alternatively, in accordance with the terms contained in a written | ||||
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r2776 | ** agreement between you and The Qt Company. | ||
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r2483 | ** | ||
** If you have questions regarding the use of this file, please use | ||||
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r2740 | ** contact form at http://qt.io | ||
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r2483 | ** | ||
****************************************************************************/ | ||||
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r2714 | #include <private/polarchartvalueaxisradial_p.h> | ||
#include <private/chartpresenter_p.h> | ||||
#include <private/abstractchartlayout_p.h> | ||||
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r2483 | |||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r2483 | |||
PolarChartValueAxisRadial::PolarChartValueAxisRadial(QValueAxis *axis, QGraphicsItem *item) | ||||
: PolarChartAxisRadial(axis, item) | ||||
{ | ||||
QObject::connect(axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int))); | ||||
QObject::connect(axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString))); | ||||
} | ||||
PolarChartValueAxisRadial::~PolarChartValueAxisRadial() | ||||
{ | ||||
} | ||||
QVector<qreal> PolarChartValueAxisRadial::calculateLayout() const | ||||
{ | ||||
int tickCount = static_cast<QValueAxis *>(axis())->tickCount(); | ||||
Q_ASSERT(tickCount >= 2); | ||||
QVector<qreal> points; | ||||
points.resize(tickCount); | ||||
const qreal d = (axisGeometry().width() / 2) / qreal(tickCount - 1); | ||||
for (int i = 0; i < tickCount; ++i) { | ||||
qreal radialCoordinate = qreal(i) * d; | ||||
points[i] = radialCoordinate; | ||||
} | ||||
return points; | ||||
} | ||||
void PolarChartValueAxisRadial::createAxisLabels(const QVector<qreal> &layout) | ||||
{ | ||||
setLabels(createValueLabels(min(), max(), layout.size(), static_cast<QValueAxis *>(axis())->labelFormat())); | ||||
} | ||||
void PolarChartValueAxisRadial::handleTickCountChanged(int tick) | ||||
{ | ||||
Q_UNUSED(tick); | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
if (presenter()) | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
void PolarChartValueAxisRadial::handleLabelFormatChanged(const QString &format) | ||||
{ | ||||
Q_UNUSED(format); | ||||
QGraphicsLayoutItem::updateGeometry(); | ||||
if (presenter()) | ||||
presenter()->layout()->invalidate(); | ||||
} | ||||
#include "moc_polarchartvalueaxisradial_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||