|
|
/******************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2015 The Qt Company Ltd.
|
|
|
** Contact: http://www.qt.io/licensing/
|
|
|
**
|
|
|
** This file is part of the Qt Charts module.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE:COMM$
|
|
|
**
|
|
|
** Commercial License Usage
|
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
|
** accordance with the commercial license agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
|
** and conditions see http://www.qt.io/terms-conditions. For further
|
|
|
** information use the contact form at http://www.qt.io/contact-us.
|
|
|
**
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
******************************************************************************/
|
|
|
|
|
|
#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_CHARTS_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()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartCategoryAxisX::calculateLayout() const
|
|
|
{
|
|
|
int tickCount = m_axis->categoriesLabels().count() + 1;
|
|
|
QVector<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);
|
|
|
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: {
|
|
|
QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
|
|
|
QStringLiteral("..."),
|
|
|
axis()->labelsAngle());
|
|
|
height = boundingRect.height() + labelPadding() + base.height() + 1.0;
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize: {
|
|
|
qreal labelHeight = 0.0;
|
|
|
foreach (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;
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
void ChartCategoryAxisX::handleCategoriesChanged()
|
|
|
{
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
#include "moc_chartcategoryaxisx_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
