|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2014 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.io
|
|
|
**
|
|
|
** This file is part of the Qt Charts module.
|
|
|
**
|
|
|
** Licensees holding valid commercial license for Qt may use this file in
|
|
|
** accordance with the Qt License Agreement provided with the Software
|
|
|
** or, alternatively, in accordance with the terms contained in a written
|
|
|
** agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.io
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include <private/chartcategoryaxisy_p.h>
|
|
|
#include <QtCharts/QCategoryAxis>
|
|
|
#include <QtCharts/QAbstractAxis>
|
|
|
#include <private/chartpresenter_p.h>
|
|
|
#include <private/abstractchartlayout_p.h>
|
|
|
#include <QtWidgets/QGraphicsLayout>
|
|
|
#include <QtCore/QtMath>
|
|
|
#include <QtCore/QDebug>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartCategoryAxisY::ChartCategoryAxisY(QCategoryAxis *axis, QGraphicsItem* item)
|
|
|
: VerticalAxis(axis, item, true),
|
|
|
m_axis(axis)
|
|
|
{
|
|
|
QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged()));
|
|
|
}
|
|
|
|
|
|
ChartCategoryAxisY::~ChartCategoryAxisY()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartCategoryAxisY::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.height() / range;
|
|
|
for (int i = 0; i < tickCount; ++i) {
|
|
|
if (i < tickCount - 1) {
|
|
|
qreal y = -(m_axis->startValue(m_axis->categoriesLabels().at(i)) - min()) * scale + gridRect.bottom();
|
|
|
points[i] = y;
|
|
|
} else {
|
|
|
qreal y = -(m_axis->endValue(m_axis->categoriesLabels().at(i - 1)) - min()) * scale + gridRect.bottom();
|
|
|
points[i] = y;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
void ChartCategoryAxisY::updateGeometry()
|
|
|
{
|
|
|
setLabels(m_axis->categoriesLabels() << QString());
|
|
|
VerticalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartCategoryAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QSizeF sh;
|
|
|
QSizeF base = VerticalAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = m_axis->categoriesLabels();
|
|
|
qreal width = 0;
|
|
|
qreal height = 0; // Height is irrelevant for Y axes with interval labels
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize: {
|
|
|
QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
|
|
|
QStringLiteral("..."),
|
|
|
axis()->labelsAngle());
|
|
|
width = boundingRect.width() + labelPadding() + base.width() + 1.0;
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize: {
|
|
|
qreal labelWidth = 0.0;
|
|
|
foreach (const QString& s, ticksList) {
|
|
|
QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
|
|
|
labelWidth = qMax(rect.width(), labelWidth);
|
|
|
}
|
|
|
width = labelWidth + labelPadding() + base.width() + 1.0;
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
void ChartCategoryAxisY::handleCategoriesChanged()
|
|
|
{
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
#include "moc_chartcategoryaxisy_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|