|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2013 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial 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.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "chartcategoryaxisy_p.h"
|
|
|
#include "qcategoryaxis.h"
|
|
|
#include "qabstractaxis.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include <QGraphicsLayout>
|
|
|
#include <QFontMetrics>
|
|
|
#include <qmath.h>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartCategoryAxisY::ChartCategoryAxisY(QCategoryAxis *axis, QGraphicsItem* item)
|
|
|
: VerticalAxis(axis, item, true),
|
|
|
m_axis(axis)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
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() << "");
|
|
|
VerticalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
void ChartCategoryAxisY::handleAxisUpdated()
|
|
|
{
|
|
|
updateGeometry();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartCategoryAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QFontMetrics fn(font());
|
|
|
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 = labelBoundingRect(fn, "...");
|
|
|
width = boundingRect.width() + labelPadding();
|
|
|
width += base.width();
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize: {
|
|
|
int labelWidth = 0;
|
|
|
foreach (const QString& s, ticksList) {
|
|
|
QRect rect = labelBoundingRect(fn, s);
|
|
|
labelWidth = qMax(rect.width(), labelWidth);
|
|
|
}
|
|
|
width = labelWidth + labelPadding() + 1;
|
|
|
width += base.width();
|
|
|
sh = QSizeF(width, height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
