|
|
/******************************************************************************
|
|
|
**
|
|
|
** 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/abstractdomain_p.h>
|
|
|
#include <private/qabstractaxis_p.h>
|
|
|
#include <QtCore/QtMath>
|
|
|
#include <cmath>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
|
|
|
AbstractDomain::AbstractDomain(QObject *parent)
|
|
|
: QObject(parent),
|
|
|
m_minX(0),
|
|
|
m_maxX(0),
|
|
|
m_minY(0),
|
|
|
m_maxY(0),
|
|
|
m_signalsBlocked(false),
|
|
|
m_zoomed(false),
|
|
|
m_zoomResetMinX(0),
|
|
|
m_zoomResetMaxX(0),
|
|
|
m_zoomResetMinY(0),
|
|
|
m_zoomResetMaxY(0)
|
|
|
|
|
|
{
|
|
|
}
|
|
|
|
|
|
AbstractDomain::~AbstractDomain()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setSize(const QSizeF &size)
|
|
|
{
|
|
|
if (m_size != size) {
|
|
|
m_size=size;
|
|
|
emit updated();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QSizeF AbstractDomain::size() const
|
|
|
{
|
|
|
return m_size;
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setRangeX(qreal min, qreal max)
|
|
|
{
|
|
|
setRange(min, max, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setRangeY(qreal min, qreal max)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, min, max);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setMinX(qreal min)
|
|
|
{
|
|
|
setRange(min, m_maxX, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setMaxX(qreal max)
|
|
|
{
|
|
|
setRange(m_minX, max, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setMinY(qreal min)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, min, m_maxY);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::setMaxY(qreal max)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, m_minY, max);
|
|
|
}
|
|
|
|
|
|
qreal AbstractDomain::spanX() const
|
|
|
{
|
|
|
Q_ASSERT(m_maxX >= m_minX);
|
|
|
return m_maxX - m_minX;
|
|
|
}
|
|
|
|
|
|
qreal AbstractDomain::spanY() const
|
|
|
{
|
|
|
Q_ASSERT(m_maxY >= m_minY);
|
|
|
return m_maxY - m_minY;
|
|
|
}
|
|
|
|
|
|
bool AbstractDomain::isEmpty() const
|
|
|
{
|
|
|
return qFuzzyCompare(spanX(), 0) || qFuzzyCompare(spanY(), 0) || m_size.isEmpty();
|
|
|
}
|
|
|
|
|
|
QPointF AbstractDomain::calculateDomainPoint(const QPointF &point) const
|
|
|
{
|
|
|
const qreal deltaX = m_size.width() / (m_maxX - m_minX);
|
|
|
const qreal deltaY = m_size.height() / (m_maxY - m_minY);
|
|
|
qreal x = point.x() / deltaX + m_minX;
|
|
|
qreal y = (point.y() - m_size.height()) / (-deltaY) + m_minY;
|
|
|
return QPointF(x, y);
|
|
|
}
|
|
|
|
|
|
// handlers
|
|
|
|
|
|
void AbstractDomain::handleVerticalAxisRangeChanged(qreal min, qreal max)
|
|
|
{
|
|
|
setRangeY(min, max);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::handleHorizontalAxisRangeChanged(qreal min, qreal max)
|
|
|
{
|
|
|
setRangeX(min, max);
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::blockRangeSignals(bool block)
|
|
|
{
|
|
|
if (m_signalsBlocked!=block) {
|
|
|
m_signalsBlocked=block;
|
|
|
if (!block) {
|
|
|
emit rangeHorizontalChanged(m_minX,m_maxX);
|
|
|
emit rangeVerticalChanged(m_minY,m_maxY);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::zoomReset()
|
|
|
{
|
|
|
if (m_zoomed) {
|
|
|
setRange(m_zoomResetMinX,
|
|
|
m_zoomResetMaxX,
|
|
|
m_zoomResetMinY,
|
|
|
m_zoomResetMaxY);
|
|
|
m_zoomed = false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AbstractDomain::storeZoomReset()
|
|
|
{
|
|
|
if (!m_zoomed) {
|
|
|
m_zoomed = true;
|
|
|
m_zoomResetMinX = m_minX;
|
|
|
m_zoomResetMaxX = m_maxX;
|
|
|
m_zoomResetMinY = m_minY;
|
|
|
m_zoomResetMaxY = m_maxY;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
//algorithm defined by Paul S.Heckbert GraphicalGems I
|
|
|
|
|
|
void AbstractDomain::looseNiceNumbers(qreal &min, qreal &max, int &ticksCount)
|
|
|
{
|
|
|
qreal range = niceNumber(max - min, true); //range with ceiling
|
|
|
qreal step = niceNumber(range / (ticksCount - 1), false);
|
|
|
min = qFloor(min / step);
|
|
|
max = qCeil(max / step);
|
|
|
ticksCount = int(max - min) + 1;
|
|
|
min *= step;
|
|
|
max *= step;
|
|
|
}
|
|
|
|
|
|
//nice numbers can be expressed as form of 1*10^n, 2* 10^n or 5*10^n
|
|
|
|
|
|
qreal AbstractDomain::niceNumber(qreal x, bool ceiling)
|
|
|
{
|
|
|
qreal z = qPow(10, qFloor(std::log10(x))); //find corresponding number of the form of 10^n than is smaller than x
|
|
|
qreal q = x / z; //q<10 && q>=1;
|
|
|
|
|
|
if (ceiling) {
|
|
|
if (q <= 1.0) q = 1;
|
|
|
else if (q <= 2.0) q = 2;
|
|
|
else if (q <= 5.0) q = 5;
|
|
|
else q = 10;
|
|
|
} else {
|
|
|
if (q < 1.5) q = 1;
|
|
|
else if (q < 3.0) q = 2;
|
|
|
else if (q < 7.0) q = 5;
|
|
|
else q = 10;
|
|
|
}
|
|
|
return q * z;
|
|
|
}
|
|
|
|
|
|
bool AbstractDomain::attachAxis(QAbstractAxis *axis)
|
|
|
{
|
|
|
if (axis->orientation() == Qt::Vertical) {
|
|
|
QObject::connect(axis->d_ptr.data(), SIGNAL(rangeChanged(qreal,qreal)), this, SLOT(handleVerticalAxisRangeChanged(qreal,qreal)));
|
|
|
QObject::connect(this, SIGNAL(rangeVerticalChanged(qreal,qreal)), axis->d_ptr.data(), SLOT(handleRangeChanged(qreal,qreal)));
|
|
|
}
|
|
|
|
|
|
if (axis->orientation() == Qt::Horizontal) {
|
|
|
QObject::connect(axis->d_ptr.data(), SIGNAL(rangeChanged(qreal,qreal)), this, SLOT(handleHorizontalAxisRangeChanged(qreal,qreal)));
|
|
|
QObject::connect(this, SIGNAL(rangeHorizontalChanged(qreal,qreal)), axis->d_ptr.data(), SLOT(handleRangeChanged(qreal,qreal)));
|
|
|
}
|
|
|
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
bool AbstractDomain::detachAxis(QAbstractAxis *axis)
|
|
|
{
|
|
|
if (axis->orientation() == Qt::Vertical) {
|
|
|
QObject::disconnect(axis->d_ptr.data(), SIGNAL(rangeChanged(qreal,qreal)), this, SLOT(handleVerticalAxisRangeChanged(qreal,qreal)));
|
|
|
QObject::disconnect(this, SIGNAL(rangeVerticalChanged(qreal,qreal)), axis->d_ptr.data(), SLOT(handleRangeChanged(qreal,qreal)));
|
|
|
}
|
|
|
|
|
|
if (axis->orientation() == Qt::Horizontal) {
|
|
|
QObject::disconnect(axis->d_ptr.data(), SIGNAL(rangeChanged(qreal,qreal)), this, SLOT(handleHorizontalAxisRangeChanged(qreal,qreal)));
|
|
|
QObject::disconnect(this, SIGNAL(rangeHorizontalChanged(qreal,qreal)), axis->d_ptr.data(), SLOT(handleRangeChanged(qreal,qreal)));
|
|
|
}
|
|
|
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
// operators
|
|
|
|
|
|
bool QT_CHARTS_AUTOTEST_EXPORT operator== (const AbstractDomain &domain1, const AbstractDomain &domain2)
|
|
|
{
|
|
|
return (qFuzzyIsNull(domain1.m_maxX - domain2.m_maxX)
|
|
|
&& qFuzzyIsNull(domain1.m_maxY - domain2.m_maxY)
|
|
|
&& qFuzzyIsNull(domain1.m_minX - domain2.m_minX)
|
|
|
&& qFuzzyIsNull(domain1.m_minY - domain2.m_minY));
|
|
|
}
|
|
|
|
|
|
|
|
|
bool QT_CHARTS_AUTOTEST_EXPORT operator!= (const AbstractDomain &domain1, const AbstractDomain &domain2)
|
|
|
{
|
|
|
return !(domain1 == domain2);
|
|
|
}
|
|
|
|
|
|
|
|
|
QDebug QT_CHARTS_AUTOTEST_EXPORT operator<<(QDebug dbg, const AbstractDomain &domain)
|
|
|
{
|
|
|
#ifdef QT_NO_TEXTSTREAM
|
|
|
Q_UNUSED(domain)
|
|
|
#else
|
|
|
dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size;
|
|
|
#endif
|
|
|
return dbg.maybeSpace();
|
|
|
}
|
|
|
|
|
|
// This function adjusts min/max ranges to failsafe values if negative/zero values are attempted.
|
|
|
void AbstractDomain::adjustLogDomainRanges(qreal &min, qreal &max)
|
|
|
{
|
|
|
if (min <= 0) {
|
|
|
min = 1.0;
|
|
|
if (max <= min)
|
|
|
max = min + 1.0;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
#include "moc_abstractdomain_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
