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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <private/chartdatetimeaxisx_p.h>
++ #include <private/chartpresenter_p.h>
++ #include <QtCharts/QDateTimeAxis>
++ #include <private/abstractchartlayout_p.h>
++ #include <QtWidgets/QGraphicsLayout>
++ #include <QtCore/QDateTime>
++ #include <QtCore/QtMath>
++
++ QT_BEGIN_NAMESPACE
++
++ ChartDateTimeAxisX::ChartDateTimeAxisX(QDateTimeAxis *axis, QGraphicsItem *item)
++ : HorizontalAxis(axis, item),
++ m_axis(axis)
++ {
++ QObject::connect(m_axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int)));
++ QObject::connect(m_axis, SIGNAL(formatChanged(QString)), this, SLOT(handleFormatChanged(QString)));
++ }
++
++ ChartDateTimeAxisX::~ChartDateTimeAxisX()
++ {
++ }
++
++ QList<qreal> ChartDateTimeAxisX::calculateLayout() const
++ {
++ int tickCount = m_axis->tickCount();
++
++ Q_ASSERT(tickCount >= 2);
++
++ QList<qreal> points;
++ points.resize(tickCount);
++ const QRectF &gridRect = gridGeometry();
++ const qreal deltaX = gridRect.width() / (qreal(tickCount) - 1.0);
++ for (int i = 0; i < tickCount; ++i)
++ points[i] = qreal(i) * deltaX + gridRect.left();
++ return points;
++ }
++
++ void ChartDateTimeAxisX::updateGeometry()
++ {
++ const QList<qreal> &layout = ChartAxisElement::layout();
++ if (layout.isEmpty())
++ return;
++ setLabels(createDateTimeLabels(min(), max(), layout.size(), m_axis->format()));
++ HorizontalAxis::updateGeometry();
++ updateLabelsDateTimes();
++ }
++
++ void ChartDateTimeAxisX::handleTickCountChanged(int tick)
++ {
++ Q_UNUSED(tick);
++ // AXIVION Next Line Qt-SkippedBaseMethod: not an override
++ QGraphicsLayoutItem::updateGeometry();
++ if (presenter())
++ presenter()->layout()->invalidate();
++ }
++
++ void ChartDateTimeAxisX::handleFormatChanged(const QString &format)
++ {
++ Q_UNUSED(format);
++ // AXIVION Next Line Qt-SkippedBaseMethod: not an override
++ QGraphicsLayoutItem::updateGeometry();
++ if (presenter())
++ presenter()->layout()->invalidate();
++ }
++
++ QSizeF ChartDateTimeAxisX::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
++ {
++ Q_UNUSED(constraint);
++
++ QSizeF sh;
++
++ QSizeF base = HorizontalAxis::sizeHint(which, constraint);
++ const QStringList ticksList =
++ createDateTimeLabels(min(), max(), m_axis->tickCount(), m_axis->format());
++ // Width of horizontal axis sizeHint indicates the maximum distance labels can extend past
++ // first and last ticks. Base width is irrelevant.
++ qreal width = 0;
++ qreal height = 0;
++
++ if (ticksList.empty())
++ return sh;
++
++ switch (which) {
++ case Qt::MinimumSize: {
++ if (labelsVisible()) {
++ QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
++ QStringLiteral("..."),
++ axis()->labelsAngle());
++ width = boundingRect.width() / 2.0;
++ height = boundingRect.height() + labelPadding() + base.height() + 1.0;
++ } else {
++ width = 0;
++ height = base.height() + 1.0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ case Qt::PreferredSize: {
++ if (labelsVisible()) {
++ qreal labelHeight = 0.0;
++ qreal firstWidth = -1.0;
++ for (const QString &s : ticksList) {
++ QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
++ labelHeight = qMax(rect.height(), labelHeight);
++ width = rect.width();
++ if (firstWidth < 0.0)
++ firstWidth = width;
++ }
++ height = labelHeight + labelPadding() + base.height() + 1.0;
++ width = qMax(width, firstWidth) / 2.0;
++ } else {
++ height = base.height() + 1.0;
++ width = 0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ default:
++ break;
++ }
++
++ return sh;
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_chartdatetimeaxisx_p.cpp"