xlogydomain.cpp
213 lines
| 6.6 KiB
| text/x-c
|
CppLexer
|
r2275 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2012 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 "xlogydomain_p.h" | ||||
#include "qabstractaxis_p.h" | ||||
|
r2290 | #include "qlogvalueaxis.h" | ||
|
r2275 | #include <qmath.h> | ||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
XLogYDomain::XLogYDomain(QObject *parent) | ||||
: AbstractDomain(parent), | ||||
m_logMinY(0), | ||||
m_logMaxY(1), | ||||
m_logBaseY(10) | ||||
{ | ||||
} | ||||
XLogYDomain::~XLogYDomain() | ||||
{ | ||||
} | ||||
void XLogYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
{ | ||||
bool axisXChanged = false; | ||||
bool axisYChanged = false; | ||||
if (!qFuzzyIsNull(m_minX - minX) || !qFuzzyIsNull(m_maxX - maxX)) { | ||||
m_minX = minX; | ||||
m_maxX = maxX; | ||||
axisXChanged = true; | ||||
|
r2288 | if(!m_signalsBlocked) | ||
|
r2275 | emit rangeHorizontalChanged(m_minX, m_maxX); | ||
} | ||||
if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) { | ||||
m_minY = minY; | ||||
m_maxY = maxY; | ||||
axisYChanged = true; | ||||
m_logMinY = log10(m_minY) / log10(m_logBaseY); | ||||
m_logMaxY = log10(m_maxY) / log10(m_logBaseY); | ||||
|
r2288 | if(!m_signalsBlocked) | ||
|
r2275 | emit rangeVerticalChanged(m_minY, m_maxY); | ||
} | ||||
if (axisXChanged || axisYChanged) | ||||
emit updated(); | ||||
} | ||||
void XLogYDomain::zoomIn(const QRectF &rect) | ||||
{ | ||||
qreal dx = spanX() / m_size.width(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
maxX = minX + dx * rect.right(); | ||||
minX = minX + dx * rect.left(); | ||||
|
r2280 | |||
qreal newLogMinY = m_logMaxY - rect.bottom() * (m_logMaxY - m_logMinY) / m_size.height(); | ||||
qreal newLogMaxY = m_logMaxY - rect.top() * (m_logMaxY - m_logMinY) / m_size.height(); | ||||
qreal minY = qPow(m_logBaseY, newLogMinY); | ||||
qreal maxY = qPow(m_logBaseY, newLogMaxY); | ||||
|
r2275 | |||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XLogYDomain::zoomOut(const QRectF &rect) | ||||
{ | ||||
qreal dx = spanX() / rect.width(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
minX = maxX - dx * rect.right(); | ||||
maxX = minX + dx * m_size.width(); | ||||
|
r2280 | |||
qreal ratioY = m_size.height()/rect.height(); | ||||
|
r2294 | qreal newLogMinY = m_logMinY - (m_logMaxY - m_logMinY) / ratioY; | ||
|
r2280 | qreal newLogMaxY = m_logMaxY + (m_logMaxY - m_logMinY) / ratioY; | ||
qreal minY = qPow(m_logBaseY, newLogMinY); | ||||
qreal maxY = qPow(m_logBaseY, newLogMaxY); | ||||
|
r2275 | |||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XLogYDomain::move(qreal dx, qreal dy) | ||||
{ | ||||
qreal x = spanX() / m_size.width(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
if (dx != 0) { | ||||
minX = minX + x * dx; | ||||
maxX = maxX + x * dx; | ||||
} | ||||
|
r2280 | |||
qreal stepY = dy * qAbs(m_logMaxY - m_logMinY) / m_size.height(); | ||||
qreal minY = qPow(m_logBaseY, m_logMinY + stepY); | ||||
qreal maxY = qPow(m_logBaseY, m_logMaxY + stepY); | ||||
|
r2275 | setRange(minX, maxX, minY, maxY); | ||
} | ||||
QPointF XLogYDomain::calculateGeometryPoint(const QPointF &point) const | ||||
{ | ||||
const qreal leftEdge = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
qreal x = (point.x() - m_minX) * deltaX; | ||||
qreal y = (log10(point.y()) / log10(m_logBaseY)) * -deltaY - leftEdge * -deltaY + m_size.height(); | ||||
return QPointF(x, y); | ||||
} | ||||
QVector<QPointF> XLogYDomain::calculateGeometryPoints(const QList<QPointF>& vector) const | ||||
{ | ||||
const qreal leftEdge = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
QVector<QPointF> result; | ||||
result.resize(vector.count()); | ||||
for (int i = 0; i < vector.count(); ++i) { | ||||
qreal x = (vector[i].x() - m_minX) * deltaX; | ||||
qreal y = (log10(vector[i].y()) / log10(m_logBaseY)) * -deltaY - leftEdge * -deltaY + m_size.height(); | ||||
result[i].setX(x); | ||||
result[i].setY(y); | ||||
} | ||||
return result; | ||||
} | ||||
QPointF XLogYDomain::calculateDomainPoint(const QPointF &point) const | ||||
{ | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
|
r2283 | const qreal leftEdgeY = m_logMinY < m_logMaxY ? m_logMinY : m_logMaxY; | ||
const qreal deltaY = m_size.height() / qAbs(m_logMaxY - m_logMinY); | ||||
|
r2275 | qreal x = point.x() / deltaX + m_minX; | ||
|
r2283 | qreal y = qPow(m_logBaseY, leftEdgeY + (m_size.height() - point.y()) / deltaY); | ||
|
r2275 | return QPointF(x, y); | ||
} | ||||
|
r2290 | bool XLogYDomain::attachAxis(QAbstractAxis* axis) | ||
{ | ||||
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
|
r2295 | if(logAxis && logAxis->orientation()==Qt::Vertical){ | ||
|
r2290 | QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); | ||
|
r2295 | handleVerticalAxisBaseChanged(logAxis->base()); | ||
} | ||||
|
r2292 | return AbstractDomain::attachAxis(axis); | ||
|
r2290 | } | ||
bool XLogYDomain::detachAxis(QAbstractAxis* axis) | ||||
{ | ||||
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis); | ||||
if(logAxis && logAxis->orientation()==Qt::Vertical) | ||||
QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleVerticalAxisBaseChanged(qreal))); | ||||
|
r2292 | return AbstractDomain::detachAxis(axis); | ||
|
r2290 | } | ||
void XLogYDomain::handleVerticalAxisBaseChanged(qreal baseY) | ||||
{ | ||||
m_logBaseY = baseY; | ||||
|
r2293 | m_logMinY = log10(m_minY) / log10(m_logBaseY); | ||
m_logMaxY = log10(m_maxY) / log10(m_logBaseY); | ||||
|
r2322 | emit updated(); | ||
|
r2290 | } | ||
|
r2275 | // operators | ||
bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const XLogYDomain &domain1, const XLogYDomain &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 XLogYDomain &domain1, const XLogYDomain &domain2) | ||||
{ | ||||
return !(domain1 == domain2); | ||||
} | ||||
QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const XLogYDomain &domain) | ||||
{ | ||||
dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
return dbg.maybeSpace(); | ||||
} | ||||
#include "moc_xlogydomain_p.cpp" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||