|
|
#include "domain_p.h"
|
|
|
#include <cmath>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
Domain::Domain(QObject* parent):QObject(parent),
|
|
|
m_minX(0),
|
|
|
m_maxX(0),
|
|
|
m_minY(0),
|
|
|
m_maxY(0),
|
|
|
m_tickXCount(5),
|
|
|
m_tickYCount(5),
|
|
|
m_selection(QChartAxis::NativeLabelsSelection)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
Domain::~Domain()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void Domain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
|
|
|
{
|
|
|
setRange(minX, maxX, minY, maxY,m_tickXCount,m_tickYCount);
|
|
|
}
|
|
|
|
|
|
void Domain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY,int tickXCount,int tickYCount)
|
|
|
{
|
|
|
bool domainChanged = false;
|
|
|
bool tickXChanged = false;
|
|
|
bool tickYChanged = false;
|
|
|
|
|
|
if(m_tickXCount!=tickXCount) {
|
|
|
m_tickXCount=tickXCount;
|
|
|
tickXChanged=true;
|
|
|
}
|
|
|
|
|
|
if(m_tickXCount!=tickYCount) {
|
|
|
m_tickYCount=tickYCount;
|
|
|
tickYChanged=true;
|
|
|
}
|
|
|
|
|
|
if(m_minX!=minX || m_maxX!=maxX) {
|
|
|
niceNumbers(minX, maxX, m_tickXCount);
|
|
|
m_minX=minX;
|
|
|
m_maxX=maxX;
|
|
|
domainChanged=true;
|
|
|
tickXChanged=false;
|
|
|
emit rangeXChanged(minX,maxX, m_tickXCount);
|
|
|
}
|
|
|
|
|
|
if(m_minY!=minY || m_maxY!=maxY) {
|
|
|
niceNumbers(minY, maxY, m_tickYCount);
|
|
|
m_minY=minY;
|
|
|
m_maxY=maxY;
|
|
|
domainChanged=true;
|
|
|
tickYChanged=false;
|
|
|
emit rangeYChanged(minY,maxY, m_tickYCount);
|
|
|
}
|
|
|
|
|
|
if(domainChanged) {
|
|
|
emit this->domainChanged(m_minX, m_maxX, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
if(tickXChanged) {
|
|
|
emit rangeXChanged(minX,maxX, m_tickXCount);
|
|
|
}
|
|
|
|
|
|
if(tickYChanged) {
|
|
|
emit rangeYChanged(minY,maxY, m_tickYCount);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void Domain::setRangeX(qreal min, qreal max)
|
|
|
{
|
|
|
setRange(min,max,m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void Domain::setRangeX(qreal min, qreal max, int tickCount)
|
|
|
{
|
|
|
setRange(min,max,m_minY, m_maxY,tickCount,m_tickYCount);
|
|
|
}
|
|
|
|
|
|
void Domain::setRangeY(qreal min, qreal max)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, min, max);
|
|
|
}
|
|
|
|
|
|
void Domain::setRangeY(qreal min, qreal max,int tickCount)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, min, max,m_tickXCount,tickCount);
|
|
|
}
|
|
|
|
|
|
void Domain::setMinX(qreal min)
|
|
|
{
|
|
|
setRange(min, m_maxX, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void Domain::setMaxX(qreal max)
|
|
|
{
|
|
|
setRange(m_minX, max, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void Domain::setMinY(qreal min)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, min, m_maxY);
|
|
|
}
|
|
|
|
|
|
void Domain::setMaxY(qreal max)
|
|
|
{
|
|
|
setRange(m_minX, m_maxX, m_minY, max);
|
|
|
}
|
|
|
|
|
|
qreal Domain::spanX() const
|
|
|
{
|
|
|
Q_ASSERT(m_maxX >= m_minX);
|
|
|
return m_maxX - m_minX;
|
|
|
}
|
|
|
|
|
|
qreal Domain::spanY() const
|
|
|
{
|
|
|
Q_ASSERT(m_maxY >= m_minY);
|
|
|
return m_maxY - m_minY;
|
|
|
}
|
|
|
|
|
|
bool Domain::isEmpty() const
|
|
|
{
|
|
|
return spanX()==0 || spanY()==0;
|
|
|
}
|
|
|
|
|
|
void Domain::zoomIn(const QRectF& rect, const QSizeF& size)
|
|
|
{
|
|
|
qreal dx = spanX() / size.width();
|
|
|
qreal dy = spanY() / size.height();
|
|
|
|
|
|
m_maxX = m_minX + dx * rect.right();
|
|
|
m_minX = m_minX + dx * rect.left();
|
|
|
m_minY = m_maxY - dy * rect.bottom();
|
|
|
m_maxY = m_maxY - dy * rect.top();
|
|
|
|
|
|
niceNumbers(m_minX, m_maxX, m_tickXCount);
|
|
|
niceNumbers(m_minY, m_maxY, m_tickYCount);
|
|
|
|
|
|
emit domainChanged(m_minX, m_maxX, m_minY, m_maxY);
|
|
|
emit rangeXChanged(m_minX, m_maxX, m_tickXCount);
|
|
|
emit rangeYChanged(m_minY, m_maxY, m_tickYCount);
|
|
|
}
|
|
|
|
|
|
void Domain::zoomOut(const QRectF& rect, const QSizeF& size)
|
|
|
{
|
|
|
qreal dx = spanX() / rect.width();
|
|
|
qreal dy = spanY() / rect.height();
|
|
|
|
|
|
m_minX = m_maxX - dx * rect.right();
|
|
|
m_maxX = m_minX + dx * size.width();
|
|
|
m_maxY = m_minY + dy * rect.bottom();
|
|
|
m_minY = m_maxY - dy * size.height();
|
|
|
|
|
|
niceNumbers(m_minX, m_maxX, m_tickXCount);
|
|
|
niceNumbers(m_minY, m_maxY, m_tickYCount);
|
|
|
|
|
|
emit domainChanged(m_minX, m_maxX, m_minY, m_maxY);
|
|
|
emit rangeXChanged(m_minX, m_maxX, m_tickXCount);
|
|
|
emit rangeYChanged(m_minY, m_maxY, m_tickYCount);
|
|
|
}
|
|
|
|
|
|
void Domain::move(int dx,int dy,const QSizeF& size)
|
|
|
{
|
|
|
qreal x = spanX() / size.width();
|
|
|
qreal y = spanY() / size.height();
|
|
|
|
|
|
if(dx!=0) {
|
|
|
m_minX = m_minX + x * dx;
|
|
|
m_maxX = m_maxX + x * dx;
|
|
|
emit rangeXChanged(m_minX, m_maxX, m_tickXCount);
|
|
|
}
|
|
|
if(dy!=0) {
|
|
|
m_minY = m_minY + y * dy;
|
|
|
m_maxY = m_maxY + y * dy;
|
|
|
emit rangeYChanged(m_minY, m_maxY, m_tickYCount);
|
|
|
}
|
|
|
|
|
|
emit domainChanged(m_minX, m_maxX, m_minY, m_maxY);
|
|
|
}
|
|
|
|
|
|
void Domain::handleAxisXChanged(qreal min,qreal max,int tickXCount,QChartAxis::LabelsSelection mode)
|
|
|
{
|
|
|
m_selection=mode;
|
|
|
setRange(min,max,m_minY, m_maxY,tickXCount,m_tickYCount);
|
|
|
}
|
|
|
|
|
|
void Domain::handleAxisYChanged(qreal min,qreal max,int tickYCount,QChartAxis::LabelsSelection mode)
|
|
|
{
|
|
|
m_selection=mode;
|
|
|
setRange(m_minX, m_maxX, min, max,m_tickXCount,tickYCount);
|
|
|
}
|
|
|
|
|
|
//algorithm defined by Paul S.Heckbert GraphicalGems I
|
|
|
|
|
|
void Domain::niceNumbers(qreal &min, qreal &max, int &ticksCount)
|
|
|
{
|
|
|
if(m_selection!=QChartAxis::NativeLabelsSelection)
|
|
|
looseNiceNumbers(min,max,ticksCount);
|
|
|
}
|
|
|
|
|
|
void Domain::looseNiceNumbers(qreal &min, qreal &max, int &ticksCount)
|
|
|
{
|
|
|
qreal range = niceNumber(max-min,true); //range with ceiling
|
|
|
qreal step = niceNumber(range/(ticksCount-1),false);
|
|
|
min = floor(min/step);
|
|
|
max = ceil(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 Domain::niceNumber(qreal x,bool ceiling)
|
|
|
{
|
|
|
qreal z = pow(10,floor(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 operator== (const Domain &domain1, const Domain &domain2)
|
|
|
{
|
|
|
return (domain1.m_maxX == domain2.m_maxX &&
|
|
|
domain1.m_maxY == domain2.m_maxY &&
|
|
|
domain1.m_minX == domain2.m_minX &&
|
|
|
domain1.m_minY == domain2.m_minY);
|
|
|
}
|
|
|
|
|
|
bool operator!= (const Domain &domain1, const Domain &domain2)
|
|
|
{
|
|
|
return !(domain1 == domain2);
|
|
|
}
|
|
|
|
|
|
QDebug operator<<(QDebug dbg, const Domain &domain)
|
|
|
{
|
|
|
dbg.nospace() << "Domain("<<domain.m_minX<<','<<domain.m_maxX<<','<<domain.m_minY<<','<<domain.m_maxY<<')' << domain.m_tickXCount << "," << domain.m_tickYCount ;
|
|
|
return dbg.maybeSpace();
|
|
|
}
|
|
|
|
|
|
#include "moc_domain_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|