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-rw-r--r--src/domain/abstractdomain.cpp266
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diff --git a/src/domain/abstractdomain.cpp b/src/domain/abstractdomain.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2014 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 Enterprise Charts Add-on.
-**
-** $QT_BEGIN_LICENSE$
-** Licensees holding valid Qt Enterprise licenses may use this file in
-** accordance with the Qt Enterprise 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 "abstractdomain_p.h"
-#include "qabstractaxis_p.h"
-#include <qmath.h>
-
-QTCOMMERCIALCHART_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(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 QTCOMMERCIALCHART_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 QTCOMMERCIALCHART_AUTOTEST_EXPORT operator!= (const AbstractDomain &domain1, const AbstractDomain &domain2)
-{
- return !(domain1 == domain2);
-}
-
-
-QDebug QTCOMMERCIALCHART_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"
-
-QTCOMMERCIALCHART_END_NAMESPACE
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