|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
|
** Contact: https://www.qt.io/licensing/
|
|
|
**
|
|
|
** This file is part of the Qt Charts module of the Qt Toolkit.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE:GPL$
|
|
|
** 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 https://www.qt.io/terms-conditions. For further
|
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
|
**
|
|
|
** GNU General Public License Usage
|
|
|
** Alternatively, this file may be used under the terms of the GNU
|
|
|
** General Public License version 3 or (at your option) any later version
|
|
|
** approved by the KDE Free Qt Foundation. The licenses are as published by
|
|
|
** the Free Software Foundation and appearing in the file LICENSE.GPL3
|
|
|
** included in the packaging of this file. Please review the following
|
|
|
** information to ensure the GNU General Public License requirements will
|
|
|
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
|
|
|
**
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include <private/chartbarcategoryaxisx_p.h>
|
|
|
#include <private/chartpresenter_p.h>
|
|
|
#include <private/qbarcategoryaxis_p.h>
|
|
|
#include <private/abstractchartlayout_p.h>
|
|
|
#include <QtCore/QDebug>
|
|
|
#include <QtCore/QtMath>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartBarCategoryAxisX::ChartBarCategoryAxisX(QBarCategoryAxis *axis, QGraphicsItem* item)
|
|
|
: HorizontalAxis(axis, item, true),
|
|
|
m_categoriesAxis(axis)
|
|
|
{
|
|
|
QObject::connect(m_categoriesAxis,SIGNAL(categoriesChanged()),this, SLOT(handleCategoriesChanged()));
|
|
|
handleCategoriesChanged();
|
|
|
}
|
|
|
|
|
|
ChartBarCategoryAxisX::~ChartBarCategoryAxisX()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartBarCategoryAxisX::calculateLayout() const
|
|
|
{
|
|
|
QVector<qreal> points;
|
|
|
const QRectF& gridRect = gridGeometry();
|
|
|
qreal range = max() - min();
|
|
|
const qreal delta = gridRect.width() / range;
|
|
|
|
|
|
if (delta < 2)
|
|
|
return points;
|
|
|
|
|
|
qreal adjustedMin = min() + 0.5;
|
|
|
qreal offset = (qCeil(adjustedMin) - adjustedMin) * delta;
|
|
|
|
|
|
int count = qFloor(range);
|
|
|
if (count < 1)
|
|
|
return points;
|
|
|
|
|
|
points.resize(count + 2);
|
|
|
|
|
|
for (int i = 0; i < count + 2; ++i)
|
|
|
points[i] = offset + (qreal(i) * delta) + gridRect.left();
|
|
|
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
QStringList ChartBarCategoryAxisX::createCategoryLabels(const QVector<qreal>& layout) const
|
|
|
{
|
|
|
QStringList result ;
|
|
|
const QRectF &gridRect = gridGeometry();
|
|
|
qreal d = (max() - min()) / gridRect.width();
|
|
|
|
|
|
for (int i = 0; i < layout.count() - 1; ++i) {
|
|
|
qreal x = qFloor((((layout[i] + layout[i + 1]) / 2 - gridRect.left()) * d + min() + 0.5));
|
|
|
if (x < max() && (x >= 0) && x < m_categoriesAxis->categories().count()) {
|
|
|
result << m_categoriesAxis->categories().at(x);
|
|
|
} else {
|
|
|
// No label for x coordinate
|
|
|
result << QString();
|
|
|
}
|
|
|
}
|
|
|
result << QString();
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
|
|
|
void ChartBarCategoryAxisX::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal>& layout = ChartAxisElement::layout();
|
|
|
if (layout.isEmpty())
|
|
|
return;
|
|
|
setLabels(createCategoryLabels(layout));
|
|
|
HorizontalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
void ChartBarCategoryAxisX::handleCategoriesChanged()
|
|
|
{
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
if(presenter()) presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartBarCategoryAxisX::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QSizeF sh;
|
|
|
QSizeF base = HorizontalAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = m_categoriesAxis->categories();
|
|
|
|
|
|
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;
|
|
|
}
|
|
|
|
|
|
#include "moc_chartbarcategoryaxisx_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|