| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | #include <private/polarchartvalueaxisradial_p.h> |
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| 5 | #include <private/chartpresenter_p.h> |
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| 6 | #include <private/abstractchartlayout_p.h> |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | PolarChartValueAxisRadial::PolarChartValueAxisRadial(QValueAxis *axis, QGraphicsItem *item) |
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| 11 | : PolarChartAxisRadial(axis, item) |
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| 12 | { |
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| 13 | QObject::connect(sender: axis, SIGNAL(tickCountChanged(int)), receiver: this, SLOT(handleTickCountChanged(int))); |
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| 14 | QObject::connect(sender: axis, SIGNAL(minorTickCountChanged(int)), |
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| 15 | receiver: this, SLOT(handleMinorTickCountChanged(int))); |
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| 16 | QObject::connect(sender: axis, SIGNAL(labelFormatChanged(QString)), receiver: this, SLOT(handleLabelFormatChanged(QString))); |
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| 17 | } |
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| 18 | |
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| 19 | PolarChartValueAxisRadial::~PolarChartValueAxisRadial() |
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| 20 | { |
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| 21 | } |
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| 22 | |
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| 23 | QList<qreal> PolarChartValueAxisRadial::calculateLayout() const |
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| 24 | { |
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| 25 | int tickCount = static_cast<QValueAxis *>(axis())->tickCount(); |
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| 26 | Q_ASSERT(tickCount >= 2); |
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| 27 | |
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| 28 | QList<qreal> points; |
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| 29 | points.resize(size: tickCount); |
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| 30 | |
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| 31 | const qreal d = (axisGeometry().width() / 2) / qreal(tickCount - 1); |
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| 32 | |
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| 33 | for (int i = 0; i < tickCount; ++i) { |
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| 34 | qreal radialCoordinate = qreal(i) * d; |
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| 35 | points[i] = radialCoordinate; |
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| 36 | } |
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| 37 | |
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| 38 | return points; |
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| 39 | } |
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| 40 | |
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| 41 | void PolarChartValueAxisRadial::createAxisLabels(const QList<qreal> &layout) |
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| 42 | { |
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| 43 | setLabels(createValueLabels(max: min(), min: max(), ticks: layout.size(), tickInterval: 0.0, tickAnchor: 0.0, |
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| 44 | tickType: QValueAxis::TicksFixed, |
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| 45 | format: static_cast<QValueAxis *>(axis())->labelFormat())); |
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| 46 | } |
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| 47 | |
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| 48 | void PolarChartValueAxisRadial::handleTickCountChanged(int tick) |
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| 49 | { |
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| 50 | Q_UNUSED(tick); |
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| 51 | QGraphicsLayoutItem::updateGeometry(); |
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| 52 | if (presenter()) |
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| 53 | presenter()->layout()->invalidate(); |
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| 54 | } |
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| 55 | |
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| 56 | void PolarChartValueAxisRadial::handleMinorTickCountChanged(int tick) |
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| 57 | { |
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| 58 | Q_UNUSED(tick); |
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| 59 | QGraphicsLayoutItem::updateGeometry(); |
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| 60 | if (presenter()) |
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| 61 | presenter()->layout()->invalidate(); |
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| 62 | } |
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| 63 | |
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| 64 | void PolarChartValueAxisRadial::handleLabelFormatChanged(const QString &format) |
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| 65 | { |
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| 66 | Q_UNUSED(format); |
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| 67 | QGraphicsLayoutItem::updateGeometry(); |
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| 68 | if (presenter()) |
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| 69 | presenter()->layout()->invalidate(); |
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| 70 | } |
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| 71 | |
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| 72 | QT_END_NAMESPACE |
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| 73 | |
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| 74 | #include "moc_polarchartvalueaxisradial_p.cpp" |
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| 75 | |
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