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-rw-r--r--src/domain/logxlogydomain.cpp278
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diff --git a/src/domain/logxlogydomain.cpp b/src/domain/logxlogydomain.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 "logxlogydomain_p.h"
-#include "qabstractaxis_p.h"
-#include "qlogvalueaxis.h"
-#include <qmath.h>
-
-QTCOMMERCIALCHART_BEGIN_NAMESPACE
-
-LogXLogYDomain::LogXLogYDomain(QObject *parent)
- : AbstractDomain(parent),
- m_logLeftX(0),
- m_logRightX(1),
- m_logBaseX(10),
- m_logLeftY(0),
- m_logRightY(1),
- m_logBaseY(10)
-{
-}
-
-LogXLogYDomain::~LogXLogYDomain()
-{
-}
-
-void LogXLogYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
-{
- bool axisXChanged = false;
- bool axisYChanged = false;
-
- adjustLogDomainRanges(minX, maxX);
- adjustLogDomainRanges(minY, maxY);
-
- if (!qFuzzyIsNull(m_minX - minX) || !qFuzzyIsNull(m_maxX - maxX)) {
- m_minX = minX;
- m_maxX = maxX;
- axisXChanged = true;
- qreal logMinX = log10(m_minX) / log10(m_logBaseX);
- qreal logMaxX = log10(m_maxX) / log10(m_logBaseX);
- m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX;
- m_logRightX = logMinX > logMaxX ? logMinX : logMaxX;
- if(!m_signalsBlocked)
- emit rangeHorizontalChanged(m_minX, m_maxX);
- }
-
- if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) {
- m_minY = minY;
- m_maxY = maxY;
- axisYChanged = true;
- qreal logMinY = log10(m_minY) / log10(m_logBaseY);
- qreal logMaxY = log10(m_maxY) / log10(m_logBaseY);
- m_logLeftY = logMinY < logMaxY ? logMinY : logMaxY;
- m_logRightY = logMinY > logMaxY ? logMinY : logMaxY;
- if (!m_signalsBlocked)
- emit rangeVerticalChanged(m_minY, m_maxY);
- }
-
- if (axisXChanged || axisYChanged)
- emit updated();
-}
-
-void LogXLogYDomain::zoomIn(const QRectF &rect)
-{
- storeZoomReset();
- qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
- qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
- qreal leftX = qPow(m_logBaseX, logLeftX);
- qreal rightX = qPow(m_logBaseX, logRightX);
- qreal minX = leftX < rightX ? leftX : rightX;
- qreal maxX = leftX > rightX ? leftX : rightX;
-
- qreal logLeftY = m_logRightY - rect.bottom() * (m_logRightY - m_logLeftY) / m_size.height();
- qreal logRightY = m_logRightY - rect.top() * (m_logRightY - m_logLeftY) / m_size.height();
- qreal leftY = qPow(m_logBaseY, logLeftY);
- qreal rightY = qPow(m_logBaseY, logRightY);
- qreal minY = leftY < rightY ? leftY : rightY;
- qreal maxY = leftY > rightY ? leftY : rightY;
-
- setRange(minX, maxX, minY, maxY);
-}
-
-void LogXLogYDomain::zoomOut(const QRectF &rect)
-{
- storeZoomReset();
- const qreal factorX = m_size.width() / rect.width();
- const qreal factorY = m_size.height() / rect.height();
-
- qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2 * (1 - factorX);
- qreal logRIghtX = m_logLeftX + (m_logRightX - m_logLeftX) / 2 * (1 + factorX);
- qreal leftX = qPow(m_logBaseX, logLeftX);
- qreal rightX = qPow(m_logBaseX, logRIghtX);
- qreal minX = leftX < rightX ? leftX : rightX;
- qreal maxX = leftX > rightX ? leftX : rightX;
-
- qreal newLogMinY = m_logLeftY + (m_logRightY - m_logLeftY) / 2 * (1 - factorY);
- qreal newLogMaxY = m_logLeftY + (m_logRightY - m_logLeftY) / 2 * (1 + factorY);
- qreal leftY = qPow(m_logBaseY, newLogMinY);
- qreal rightY = qPow(m_logBaseY, newLogMaxY);
- qreal minY = leftY < rightY ? leftY : rightY;
- qreal maxY = leftY > rightY ? leftY : rightY;
-
- setRange(minX, maxX, minY, maxY);
-}
-
-void LogXLogYDomain::move(qreal dx, qreal dy)
-{
- qreal stepX = dx * qAbs(m_logRightX - m_logLeftX) / m_size.width();
- qreal leftX = qPow(m_logBaseX, m_logLeftX + stepX);
- qreal rightX = qPow(m_logBaseX, m_logRightX + stepX);
- qreal minX = leftX < rightX ? leftX : rightX;
- qreal maxX = leftX > rightX ? leftX : rightX;
-
- qreal stepY = dy * (m_logRightY - m_logLeftY) / m_size.height();
- qreal leftY = qPow(m_logBaseY, m_logLeftY + stepY);
- qreal rightY = qPow(m_logBaseY, m_logRightY + stepY);
- qreal minY = leftY < rightY ? leftY : rightY;
- qreal maxY = leftY > rightY ? leftY : rightY;
-
- setRange(minX, maxX, minY, maxY);
-}
-
-QPointF LogXLogYDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const
-{
- const qreal deltaX = m_size.width() / qAbs(m_logRightX - m_logLeftX);
- const qreal deltaY = m_size.height() / qAbs(m_logRightY - m_logLeftY);
- qreal x(0);
- qreal y(0);
- if (point.x() > 0 && point.y() > 0) {
- x = (log10(point.x()) / log10(m_logBaseX)) * deltaX - m_logLeftX * deltaX;
- y = (log10(point.y()) / log10(m_logBaseY)) * -deltaY - m_logLeftY * -deltaY + m_size.height();
- ok = true;
- } else {
- qWarning() << "Logarithms of zero and negative values are undefined.";
- ok = false;
- if (point.x() > 0)
- x = (log10(point.x()) / log10(m_logBaseX)) * deltaX - m_logLeftX * deltaX;
- else
- x = 0;
- if (point.y() > 0) {
- y = (log10(point.y()) / log10(m_logBaseY)) * -deltaY - m_logLeftY * -deltaY
- + m_size.height();
- } else {
- y = m_size.height();
- }
- }
- return QPointF(x, y);
-}
-
-QVector<QPointF> LogXLogYDomain::calculateGeometryPoints(const QList<QPointF> &vector) const
-{
- const qreal deltaX = m_size.width() / qAbs(m_logRightX - m_logLeftX);
- const qreal deltaY = m_size.height() / qAbs(m_logRightY - m_logLeftY);
-
- QVector<QPointF> result;
- result.resize(vector.count());
-
- for (int i = 0; i < vector.count(); ++i) {
- if (vector[i].x() > 0 && vector[i].y() > 0) {
- qreal x = (log10(vector[i].x()) / log10(m_logBaseX)) * deltaX - m_logLeftX * deltaX;
- qreal y = (log10(vector[i].y()) / log10(m_logBaseY)) * -deltaY - m_logLeftY * -deltaY + m_size.height();
- result[i].setX(x);
- result[i].setY(y);
- } else {
- qWarning() << "Logarithms of zero and negative values are undefined.";
- return QVector<QPointF>();
- }
- }
- return result;
-}
-
-QPointF LogXLogYDomain::calculateDomainPoint(const QPointF &point) const
-{
- const qreal deltaX = m_size.width() / qAbs(m_logRightX - m_logLeftX);
- const qreal deltaY = m_size.height() / qAbs(m_logRightY - m_logLeftY);
- qreal x = qPow(m_logBaseX, m_logLeftX + point.x() / deltaX);
- qreal y = qPow(m_logBaseY, m_logLeftY + (m_size.height() - point.y()) / deltaY);
- return QPointF(x, y);
-}
-
-bool LogXLogYDomain::attachAxis(QAbstractAxis *axis)
-{
- AbstractDomain::attachAxis(axis);
- QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis);
-
- if (logAxis && logAxis->orientation() == Qt::Vertical) {
- QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal)));
- handleVerticalAxisBaseChanged(logAxis->base());
- }
-
- if (logAxis && logAxis->orientation() == Qt::Horizontal) {
- QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
- handleHorizontalAxisBaseChanged(logAxis->base());
- }
-
- return true;
-}
-
-bool LogXLogYDomain::detachAxis(QAbstractAxis *axis)
-{
- AbstractDomain::detachAxis(axis);
- QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis);
-
- if (logAxis && logAxis->orientation() == Qt::Vertical)
- QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal)));
-
- if (logAxis && logAxis->orientation() == Qt::Horizontal)
- QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
-
- return true;
-}
-
-void LogXLogYDomain::handleVerticalAxisBaseChanged(qreal baseY)
-{
- m_logBaseY = baseY;
- qreal logMinY = log10(m_minY) / log10(m_logBaseY);
- qreal logMaxY = log10(m_maxY) / log10(m_logBaseY);
- m_logLeftY = logMinY < logMaxY ? logMinY : logMaxY;
- m_logRightY = logMinY > logMaxY ? logMinY : logMaxY;
- emit updated();
-}
-
-void LogXLogYDomain::handleHorizontalAxisBaseChanged(qreal baseX)
-{
- m_logBaseX = baseX;
- qreal logMinX = log10(m_minX) / log10(m_logBaseX);
- qreal logMaxX = log10(m_maxX) / log10(m_logBaseX);
- m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX;
- m_logRightX = logMinX > logMaxX ? logMinX : logMaxX;
- emit updated();
-}
-
-// operators
-
-bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const LogXLogYDomain &domain1, const LogXLogYDomain &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 LogXLogYDomain &domain1, const LogXLogYDomain &domain2)
-{
- return !(domain1 == domain2);
-}
-
-
-QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXLogYDomain &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();
-}
-
-#include "moc_logxlogydomain_p.cpp"
-
-QTCOMMERCIALCHART_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 15:13:54 +0000