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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qlogvalueaxis.h"
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#include "qlogvalueaxis_p.h"
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#include "chartlogvalueaxisx_p.h"
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#include "chartlogvalueaxisy_p.h"
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#include "abstractdomain_p.h"
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#include <float.h>
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#include <cmath>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QLogValueAxis
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\brief The QLogValueAxis class is used for manipulating chart's axis.
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\mainclass
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\note If a QLogValueAxis is attached to a series with one or more points with
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negative or zero values on the associated dimension, the series will not be
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plotted at all. This is particularly relevant when XYModelMappers are used,
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since empty cells in models typically contain zero values.
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*/
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/*!
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\property QLogValueAxis::min
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Defines the minimum value on the axis.
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When setting this property the max is adjusted if necessary, to ensure that the range remains valid.
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Value has to be greater then 0.
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*/
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/*!
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\property QLogValueAxis::max
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Defines the maximum value on the axis.
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When setting this property the min is adjusted if necessary, to ensure that the range remains valid.
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Value has to be greater then 0.
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*/
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/*!
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\property QLogValueAxis::base
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Defines the base of the logarithm.
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Value has to be greater then 0 and not equal 1
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*/
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/*!
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\property QLogValueAxis::labelFormat
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Defines the label format of the axis.
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Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c
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See QString::sprintf() for additional details.
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*/
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/*!
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\fn void QLogValueAxis::minChanged(qreal min)
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Axis emits signal when \a min of axis has changed.
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*/
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/*!
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\fn void QLogValueAxis::maxChanged(qreal max)
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Axis emits signal when \a max of axis has changed.
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*/
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/*!
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\fn void QLogValueAxis::rangeChanged(qreal min, qreal max)
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Axis emits signal when \a min or \a max of axis has changed.
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*/
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/*!
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\fn void QLogValueAxis::labelFormatChanged(const QString &format)
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Axis emits signal when \a format of axis labels has changed.
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*/
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/*!
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\fn void QLogValueAxis::baseChanged(qreal base)
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Axis emits signal when \a base of logarithm of the axis has changed.
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*/
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/*!
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Constructs an axis object which is a child of \a parent.
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*/
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QLogValueAxis::QLogValueAxis(QObject *parent) :
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QAbstractAxis(*new QLogValueAxisPrivate(this), parent)
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{
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}
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/*!
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\internal
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*/
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QLogValueAxis::QLogValueAxis(QLogValueAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent)
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{
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}
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/*!
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Destroys the object
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*/
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QLogValueAxis::~QLogValueAxis()
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{
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Q_D(QLogValueAxis);
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if (d->m_chart)
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d->m_chart->removeAxis(this);
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}
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void QLogValueAxis::setMin(qreal min)
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{
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Q_D(QLogValueAxis);
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setRange(min, qMax(d->m_max, min));
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}
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qreal QLogValueAxis::min() const
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{
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Q_D(const QLogValueAxis);
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return d->m_min;
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}
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void QLogValueAxis::setMax(qreal max)
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{
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Q_D(QLogValueAxis);
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setRange(qMin(d->m_min, max), max);
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}
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qreal QLogValueAxis::max() const
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{
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Q_D(const QLogValueAxis);
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return d->m_max;
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}
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/*!
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Sets range from \a min to \a max on the axis.
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If min is greater than max then this function returns without making any changes.
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*/
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void QLogValueAxis::setRange(qreal min, qreal max)
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{
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Q_D(QLogValueAxis);
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bool changed = false;
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if (min > max)
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return;
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if (min > 0) {
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if (!qFuzzyCompare(d->m_min, min)) {
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d->m_min = min;
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changed = true;
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emit minChanged(min);
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}
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if (!qFuzzyCompare(d->m_max, max)) {
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d->m_max = max;
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changed = true;
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emit maxChanged(max);
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}
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if (changed) {
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emit rangeChanged(min, max);
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emit d->rangeChanged(min,max);
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}
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}
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}
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void QLogValueAxis::setLabelFormat(const QString &format)
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{
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Q_D(QLogValueAxis);
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d->m_format = format;
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emit labelFormatChanged(format);
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}
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QString QLogValueAxis::labelFormat() const
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{
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Q_D(const QLogValueAxis);
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return d->m_format;
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}
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void QLogValueAxis::setBase(qreal base)
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{
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// check if base is correct
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if (qFuzzyCompare(base, 1))
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return;
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if (base > 0) {
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Q_D(QLogValueAxis);
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d->m_base = base;
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emit baseChanged(base);
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}
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}
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qreal QLogValueAxis::base() const
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{
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Q_D(const QLogValueAxis);
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return d->m_base;
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}
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/*!
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Returns the type of the axis
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*/
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QAbstractAxis::AxisType QLogValueAxis::type() const
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{
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return AxisTypeLogValue;
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QLogValueAxisPrivate::QLogValueAxisPrivate(QLogValueAxis *q)
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: QAbstractAxisPrivate(q),
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m_min(1),
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m_max(1),
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m_base(10),
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m_format(QString::null)
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{
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}
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QLogValueAxisPrivate::~QLogValueAxisPrivate()
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{
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}
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void QLogValueAxisPrivate::setMin(const QVariant &min)
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{
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Q_Q(QLogValueAxis);
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bool ok;
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qreal value = min.toReal(&ok);
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if (ok)
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q->setMin(value);
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}
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void QLogValueAxisPrivate::setMax(const QVariant &max)
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{
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Q_Q(QLogValueAxis);
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bool ok;
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qreal value = max.toReal(&ok);
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if (ok)
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q->setMax(value);
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}
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void QLogValueAxisPrivate::setRange(const QVariant &min, const QVariant &max)
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{
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Q_Q(QLogValueAxis);
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bool ok1;
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bool ok2;
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qreal value1 = min.toReal(&ok1);
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qreal value2 = max.toReal(&ok2);
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if (ok1 && ok2)
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q->setRange(value1, value2);
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}
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void QLogValueAxisPrivate::setRange(qreal min, qreal max)
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{
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Q_Q(QLogValueAxis);
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bool changed = false;
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if (min > max)
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return;
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if (min > 0) {
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if (!qFuzzyCompare(m_min, min)) {
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m_min = min;
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changed = true;
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emit q->minChanged(min);
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}
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if (!qFuzzyCompare(m_max, max)) {
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m_max = max;
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changed = true;
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emit q->maxChanged(max);
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}
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if (changed) {
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emit rangeChanged(min,max);
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emit q->rangeChanged(min, max);
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}
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}
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}
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void QLogValueAxisPrivate::initializeGraphics(QGraphicsItem* parent)
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{
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Q_Q(QLogValueAxis);
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ChartAxis* axis(0);
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if (orientation() == Qt::Vertical)
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axis = new ChartLogValueAxisY(q,parent);
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if (orientation() == Qt::Horizontal)
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axis = new ChartLogValueAxisX(q,parent);
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m_item.reset(axis);
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QAbstractAxisPrivate::initializeGraphics(parent);
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}
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void QLogValueAxisPrivate::initializeDomain(AbstractDomain *domain)
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{
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if (orientation() == Qt::Vertical) {
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if(!qFuzzyCompare(m_max, m_min)) {
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domain->setRangeY(m_min, m_max);
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} else if ( domain->minY() > 0) {
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setRange(domain->minY(), domain->maxY());
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} else if (domain->maxY() > 0) {
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domain->setRangeY(m_min, domain->maxY());
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} else {
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domain->setRangeY(1, 10);
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}
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}
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if (orientation() == Qt::Horizontal) {
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if(!qFuzzyCompare(m_max, m_min)) {
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domain->setRangeX(m_min, m_max);
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} else if (domain->minX() > 0){
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setRange(domain->minX(), domain->maxX());
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} else if (domain->maxX() > 0) {
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domain->setRangeX(m_min, domain->maxX());
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} else {
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domain->setRangeX(1, 10);
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}
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}
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}
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#include "moc_qlogvalueaxis.cpp"
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#include "moc_qlogvalueaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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