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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <private/chartcategoryaxisx_p.h>
++ #include <QtCharts/QCategoryAxis>
++ #include <QtCharts/QAbstractAxis>
++ #include <private/chartpresenter_p.h>
++ #include <private/abstractchartlayout_p.h>
++ #include <QtWidgets/QGraphicsLayout>
++ #include <QtCore/QtMath>
++
++ QT_BEGIN_NAMESPACE
++
++ ChartCategoryAxisX::ChartCategoryAxisX(QCategoryAxis *axis, QGraphicsItem* item)
++ : HorizontalAxis(axis, item, true),
++ m_axis(axis)
++ {
++ QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged()));
++ }
++
++ ChartCategoryAxisX::~ChartCategoryAxisX()
++ {
++ }
++
++ QList<qreal> ChartCategoryAxisX::calculateLayout() const
++ {
++ int tickCount = m_axis->categoriesLabels().size() + 1;
++ QList<qreal> points;
++
++ if (tickCount < 2)
++ return points;
++
++ const QRectF &gridRect = gridGeometry();
++ qreal range = max() - min();
++ if (range > 0) {
++ points.resize(tickCount);
++ qreal scale = gridRect.width() / range;
++ for (int i = 0; i < tickCount; ++i) {
++ if (i < tickCount - 1) {
++ qreal x = (m_axis->startValue(m_axis->categoriesLabels().at(i)) - min()) * scale + gridRect.left();
++ points[i] = x;
++ } else {
++ qreal x = (m_axis->endValue(m_axis->categoriesLabels().at(i - 1)) - min()) * scale + gridRect.left();
++ points[i] = x;
++ }
++ }
++ }
++
++ return points;
++ }
++
++ void ChartCategoryAxisX::updateGeometry()
++ {
++ setLabels(m_axis->categoriesLabels() << QString());
++ HorizontalAxis::updateGeometry();
++ }
++
++ QSizeF ChartCategoryAxisX::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
++ {
++ Q_UNUSED(constraint);
++
++ QSizeF sh;
++ QSizeF base = HorizontalAxis::sizeHint(which, constraint);
++ const QStringList ticksList = m_axis->categoriesLabels();
++ qreal width = 0; // Width is irrelevant for X axes with interval labels
++ qreal height = 0;
++
++ switch (which) {
++ case Qt::MinimumSize: {
++ if (labelsVisible()) {
++ QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
++ QStringLiteral("..."),
++ axis()->labelsAngle());
++ height = boundingRect.height() + labelPadding() + base.height() + 1.0;
++ } else {
++ height = base.height() + 1.0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ case Qt::PreferredSize: {
++ if (labelsVisible()) {
++ qreal labelHeight = 0.0;
++ for (const QString &s : ticksList) {
++ QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
++ labelHeight = qMax(rect.height(), labelHeight);
++ }
++ height = labelHeight + labelPadding() + base.height() + 1.0;
++ } else {
++ height = base.height() + 1.0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ default:
++ break;
++ }
++
++ return sh;
++ }
++
++ void ChartCategoryAxisX::handleCategoriesChanged()
++ {
++ // AXIVION Next Line Qt-SkippedBaseMethod: not an override
++ QGraphicsLayoutItem::updateGeometry();
++ presenter()->layout()->invalidate();
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_chartcategoryaxisx_p.cpp"