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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "chartcoloraxisx_p.h"
#include <QtCharts/QColorAxis>
#include <private/chartpresenter_p.h>
#include <private/abstractchartlayout_p.h>
#include <QtWidgets/QGraphicsLayout>
QT_BEGIN_NAMESPACE
ChartColorAxisX::ChartColorAxisX(QColorAxis *axis, QGraphicsItem *item)
: HorizontalAxis(axis, item, true)
, m_axis(axis)
{
}
ChartColorAxisX::~ChartColorAxisX()
{
}
QSizeF ChartColorAxisX::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(constraint);
QSizeF sh;
QSizeF base = HorizontalAxis::sizeHint(which, constraint);
const QStringList &ticksList = createColorLabels(min(), max(), m_axis->tickCount());
// 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;
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() + m_axis->size()
+ colorScalePadding() + 1.0;
} else {
width = 0;
height = base.height() + m_axis->size() + colorScalePadding() + 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() + m_axis->size() + colorScalePadding()
+ 1.0;
width = qMax(width, firstWidth) / 2.0;
} else {
height = base.height() + m_axis->size() + colorScalePadding() + 1.0;
width = 0;
}
sh = QSizeF(width, height);
break;
}
default:
break;
}
return sh;
}
QList<qreal> ChartColorAxisX::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 ChartColorAxisX::updateGeometry()
{
setLabels(createColorLabels(min(), max(), m_axis->tickCount()));
HorizontalAxis::updateGeometry();
}
QT_END_NAMESPACE
#include "moc_chartcoloraxisx_p.cpp"