##// END OF EJS Templates
Fix axis geometry when there is no axis title...
Fix axis geometry when there is no axis title SizeHint won't include title padding when there is no title, yet updateGeometry() always assumed it was there when determining space for labels, causing truncated labels when title was missing. Also made missing/empty/hidden axis title work consistently. Now axis geometries should be updated correctly always when title text or visibility status changes. Task-number: QTRD-1903 Reviewed-by: Mika Salmela

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r2356:c0053ad31507
r2415:65ea14fdb747
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logxydomain.cpp
236 lines | 7.4 KiB | text/x-c | CppLexer
Marek Rosa
Domains added
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 "logxydomain_p.h"
#include "qabstractaxis_p.h"
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r2290 #include "qlogvalueaxis.h"
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r2275 #include <qmath.h>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
LogXYDomain::LogXYDomain(QObject *parent)
: AbstractDomain(parent),
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QChart mapping functions: return QPoint(0, 0) if series type is Pie...
r2351 m_logLeftX(0),
m_logRightX(1),
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r2275 m_logBaseX(10)
{
}
LogXYDomain::~LogXYDomain()
{
}
void LogXYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
{
bool axisXChanged = false;
bool axisYChanged = false;
if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(m_maxX, maxX)) {
m_minX = minX;
m_maxX = maxX;
axisXChanged = true;
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r2351 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;
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r2288 if(!m_signalsBlocked)
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r2356 emit rangeHorizontalChanged(m_minX, m_maxX);
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r2275 }
if (!qFuzzyIsNull(m_minY - minY) || !qFuzzyIsNull(m_maxY - maxY)) {
m_minY = minY;
m_maxY = maxY;
axisYChanged = true;
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r2288 if(!m_signalsBlocked)
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r2356 emit rangeVerticalChanged(m_minY, m_maxY);
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r2275 }
if (axisXChanged || axisYChanged)
emit updated();
}
void LogXYDomain::zoomIn(const QRectF &rect)
{
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r2351 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;
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r2275
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r2280 qreal dy = spanY() / m_size.height();
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r2275 qreal minY = m_minY;
qreal maxY = m_maxY;
minY = maxY - dy * rect.bottom();
maxY = maxY - dy * rect.top();
setRange(minX, maxX, minY, maxY);
}
void LogXYDomain::zoomOut(const QRectF &rect)
{
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r2351 const qreal factorX = m_size.width() / rect.width();
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;
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r2275
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r2280 qreal dy = spanY() / rect.height();
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r2275 qreal minY = m_minY;
qreal maxY = m_maxY;
maxY = minY + dy * rect.bottom();
minY = maxY - dy * m_size.height();
setRange(minX, maxX, minY, maxY);
}
void LogXYDomain::move(qreal dx, qreal dy)
{
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r2351 qreal stepX = dx * (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;
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r2275
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r2280 qreal y = spanY() / m_size.height();
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r2275 qreal minY = m_minY;
qreal maxY = m_maxY;
if (dy != 0) {
minY = minY + y * dy;
maxY = maxY + y * dy;
}
setRange(minX, maxX, minY, maxY);
}
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r2356 QPointF LogXYDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const
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r2275 {
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r2356 if (point.x() > 0) {
const qreal deltaX = m_size.width() / (m_logRightX - m_logLeftX);
const qreal deltaY = m_size.height() / (m_maxY - m_minY);
qreal x = (log10(point.x()) / log10(m_logBaseX)) * deltaX - m_logLeftX * deltaX;
qreal y = (point.y() - m_minY) * -deltaY + m_size.height();
ok = true;
return QPointF(x, y);
} else {
qWarning() << "Logarithm of negative value is undefined. Empty layout returned";
ok = false;
return QPointF();
}
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r2275 }
QVector<QPointF> LogXYDomain::calculateGeometryPoints(const QList<QPointF>& vector) const
{
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r2351 const qreal deltaX = m_size.width() / (m_logRightX - m_logLeftX);
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r2275 const qreal deltaY = m_size.height() / (m_maxY - m_minY);
QVector<QPointF> result;
result.resize(vector.count());
for (int i = 0; i < vector.count(); ++i) {
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r2356 if (vector[i].x() > 0) {
qreal x = (log10(vector[i].x()) / log10(m_logBaseX)) * deltaX - m_logLeftX * deltaX;
qreal y = (vector[i].y() - m_minY) * -deltaY + m_size.height();
result[i].setX(x);
result[i].setY(y);
} else {
qWarning() << "Logarithm of negative value is undefined. Empty layout returned";
return QVector<QPointF>();
}
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r2275 }
return result;
}
QPointF LogXYDomain::calculateDomainPoint(const QPointF &point) const
{
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r2351 const qreal deltaX = m_size.width() / (m_logRightX - m_logLeftX);
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Domains added
r2275 const qreal deltaY = m_size.height() / (m_maxY - m_minY);
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r2351 qreal x = qPow(m_logBaseX, m_logLeftX + point.x() / deltaX);
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r2275 qreal y = (point.y() - m_size.height()) / (-deltaY) + m_minY;
return QPointF(x, y);
}
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r2290 bool LogXYDomain::attachAxis(QAbstractAxis* axis)
{
AbstractDomain::attachAxis(axis);
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis);
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Fix to domain initialization when log base was preset on axis before adding it to chart
r2295 if(logAxis && logAxis->orientation()==Qt::Horizontal) {
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r2290 QObject::connect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
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r2295 handleHorizontalAxisBaseChanged(logAxis->base());
}
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r2290
return true;
}
bool LogXYDomain::detachAxis(QAbstractAxis* axis)
{
AbstractDomain::detachAxis(axis);
QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(axis);
if(logAxis && logAxis->orientation()==Qt::Horizontal)
QObject::disconnect(logAxis, SIGNAL(baseChanged(qreal)), this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
return true;
}
void LogXYDomain::handleHorizontalAxisBaseChanged(qreal baseX)
{
m_logBaseX = baseX;
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QChart mapping functions: return QPoint(0, 0) if series type is Pie...
r2351 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;
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Fixed: chart not redrawing when logaxis's logBase value changed
r2322 emit updated();
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r2290 }
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r2275 // operators
bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const LogXYDomain &domain1, const LogXYDomain &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 LogXYDomain &domain1, const LogXYDomain &domain2)
{
return !(domain1 == domain2);
}
QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXYDomain &domain)
{
dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size;
return dbg.maybeSpace();
}
#include "moc_logxydomain_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE