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++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
++
++ #include <QtCharts/qlogvalueaxis.h>
++ #include <QtCore/qmath.h>
++ #include <QtWidgets/qgraphicslayout.h>
++ #include <private/abstractchartlayout_p.h>
++ #include <private/chartlogvalueaxisy_p.h>
++ #include <private/chartpresenter_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ ChartLogValueAxisY::ChartLogValueAxisY(QLogValueAxis *axis, QGraphicsItem *item)
++ : VerticalAxis(axis, item),
++ m_axis(axis)
++ {
++ QObject::connect(m_axis, SIGNAL(baseChanged(qreal)), this, SLOT(handleBaseChanged(qreal)));
++ QObject::connect(m_axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));
++ }
++
++ ChartLogValueAxisY::~ChartLogValueAxisY()
++ {
++ }
++
++ QList<qreal> ChartLogValueAxisY::calculateLayout() const
++ {
++ QList<qreal> points;
++ points.resize(m_axis->tickCount());
++
++ const qreal logMax = qLn(m_axis->max()) / qLn(m_axis->base());
++ const qreal logMin = qLn(m_axis->min()) / qLn(m_axis->base());
++ const qreal leftEdge = qMin(logMin, logMax);
++ const qreal ceilEdge = std::ceil(leftEdge);
++
++ const QRectF &gridRect = gridGeometry();
++ const qreal deltaY = gridRect.height() / qAbs(logMax - logMin);
++ for (int i = 0; i < m_axis->tickCount(); ++i)
++ points[i] = (ceilEdge + qreal(i)) * -deltaY - leftEdge * -deltaY + gridRect.bottom();
++
++ return points;
++ }
++
++
++ void ChartLogValueAxisY::updateGeometry()
++ {
++ const QList<qreal> &layout = ChartAxisElement::layout();
++ setLabels(createLogValueLabels(m_axis->min(), m_axis->max(), m_axis->base(), layout.size(), m_axis->labelFormat()));
++ VerticalAxis::updateGeometry();
++ }
++
++ void ChartLogValueAxisY::handleBaseChanged(qreal base)
++ {
++ Q_UNUSED(base);
++ // AXIVION Next Line Qt-SkippedBaseMethod: not an override
++ QGraphicsLayoutItem::updateGeometry();
++ if(presenter()) presenter()->layout()->invalidate();
++ }
++
++ void ChartLogValueAxisY::handleLabelFormatChanged(const QString &format)
++ {
++ Q_UNUSED(format);
++ // AXIVION Next Line Qt-SkippedBaseMethod: not an override
++ QGraphicsLayoutItem::updateGeometry();
++ if(presenter()) presenter()->layout()->invalidate();
++ }
++
++ QSizeF ChartLogValueAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
++ {
++ Q_UNUSED(constraint);
++
++ const QSizeF base = VerticalAxis::sizeHint(which, constraint);
++ const int tickCount = m_axis->tickCount();
++ QStringList ticksList;
++ QSizeF sh;
++
++ if (m_axis->max() > m_axis->min() && tickCount > 0)
++ ticksList = createLogValueLabels(m_axis->min(), m_axis->max(), m_axis->base(), tickCount, m_axis->labelFormat());
++ else
++ ticksList.append(QStringLiteral(" "));
++ qreal width = 0;
++ // Height of vertical axis sizeHint indicates the maximum distance labels can extend past
++ // first and last ticks. Base height is irrelevant.
++ qreal height = 0;
++
++ switch (which) {
++ case Qt::MinimumSize: {
++ if (labelsVisible()) {
++ QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
++ QStringLiteral("..."),
++ axis()->labelsAngle());
++ width = boundingRect.width() + labelPadding() + base.width() + 1.0;
++ height = boundingRect.height() / 2.0;
++ } else {
++ width = base.width() + 1.0;
++ height = 0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ case Qt::PreferredSize: {
++ if (labelsVisible()) {
++ qreal labelWidth = 0.0;
++ qreal firstHeight = -1.0;
++ for (const QString &s : std::as_const(ticksList)) {
++ QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
++ labelWidth = qMax(rect.width(), labelWidth);
++ height = rect.height();
++ if (firstHeight < 0.0)
++ firstHeight = height;
++ }
++ width = labelWidth + labelPadding() + base.width() + 2.0; //two pixels of tolerance
++ height = qMax(height, firstHeight) / 2.0;
++ } else {
++ width = base.width() + 2.0;
++ height = 0;
++ }
++ sh = QSizeF(width, height);
++ break;
++ }
++ default:
++ break;
++ }
++
++ return sh;
++ }
++
++ QT_END_NAMESPACE
++
++ #include "moc_chartlogvalueaxisy_p.cpp"