/*
* Title: BQwtPlot.cpp
* Author: M.Thomas BEAM Ltd
* Date: 2007-04-19
*
* Contents: Enhanced plotting widget.
*
*
*/
#include <BQwtPlot.h>
#include <qwt/qwt_plot_canvas.h>
#include <qwt/qwt_plot.h>
#include <qlayout.h>
#include <limits.h>
#include <qhbox.h>
//#define DEBUG_PLOT 1;
BQwtPlot::BQwtPlot(QWidget *p, const char *name) : QwtPlot(p,name) {
oxmin = 0;
oxrange = 1024;
oxscroll= oxrange/10;
oyLeftMax = 4000;
oyLeftMin = -4000;
ocontrol = new BQwtPlotControl(this,this);
connect(canvas(),SIGNAL(mouseReleased(const QMouseEvent&)),this,SLOT(mouseReleased(const QMouseEvent&)));
}
BQwtPlotControl* BQwtPlot::getPlotControls () {
return ocontrol;
}
void BQwtPlot::getYLeftMaxMin(double& min,double& max) {
min = oyLeftMin;
max = oyLeftMax;
return;
}
void BQwtPlot::getRange(int& max,int& actual) {
max = oxrangeMax;
actual = oxrange;
return;
}
void BQwtPlot::setRange(int range) {
oxrangeMax = range;
oxrange = range;
if ((oxscroll = oxrange/10) < 1)
oxscroll = 1;
}
void BQwtPlot::zoomIn() {
zoomX(-1,0);
}
void BQwtPlot::zoomOut() {
zoomX(1,0);
}
void BQwtPlot::wheelEvent ( QWheelEvent * e ) {
emit plotEvent(e);
emit plotEvent();
}
void BQwtPlot::mouseReleased(const QMouseEvent& e ) {
if (e.button() == RightButton)
ocontrol->show();
}
void BQwtPlot::syntheticWheelEvent ( QWheelEvent * e ) {
int delta = (e->delta() > 0) ? -1 : 1;
int zoomingX = (e->state() & Qt::ShiftButton) ? 1 : 0;
int zoomingY = (e->state() & Qt::ControlButton) ? 1 : 0;
int scrolling = (zoomingX || zoomingY) ? 0 : 1;
QwtPlotCanvas* c = this->canvas();
if (zoomingX)
zoomX(delta,(int)invTransform(xBottom,(int)(e->x() - c->x())));
if (scrolling)
scroll(delta);
}
void BQwtPlot::scroll(int delta) {
if (oxrange < 100)
oxscroll = 1;
else
oxscroll = oxrange/10;
oxmin += oxscroll * delta;
oxmax = oxmin + oxrange;
if (oxmax > oxrangeMax) {
oxmax = oxrangeMax;
oxmin = oxrangeMax - oxrange;
}
if (oxmin < 0) {
oxmin = 0;
oxmax = oxmin + oxrange;
}
setAxisScale(xBottom,oxmin,oxmax);
replot();
}
void BQwtPlot::setPosition(int pos) {
oxmin = pos;
oxmax = oxmin + oxrange;
if (oxmax > oxrangeMax) {
oxmax = oxrangeMax;
oxmin = oxrangeMax - oxrange;
}
if (oxmin < 0) {
oxmin = 0;
oxmax = oxmin + oxrange;
}
setAxisScale(xBottom,oxmin,oxmax);
replot();
}
void BQwtPlot::zoomX(int delta,int pos) {
int zoom = oxrange/2;
oxrange += zoom * delta;
if (oxrange < 30)
oxrange = 30;
if (oxrange > oxrangeMax)
oxrange = oxrangeMax;
oxmax = oxmin + oxrange;
if (oxmax > oxrangeMax) {
oxmax = oxrangeMax;
oxmin = oxrangeMax - oxrange;
}
setAxisScale(xBottom,oxmin,oxmax);
replot();
}
void BQwtPlot::setAxisScale(int axis,double mn,double mx) {
oyLeftMax = mx;
oyLeftMin = mn;
QwtPlot::setAxisScale(axis,mn,mx);
}
BQwtPlotControlBasic::BQwtPlotControlBasic(QWidget *p,BQwtPlot* plot) : QWidget(p) {
QHBoxLayout* h = new QHBoxLayout(this);
oplots.append(plot);
h->setSpacing(5);
h->setMargin(5);
oscroll = new QScrollBar(Qt::Horizontal,this);
ozoomIn = new QPushButton("Zoom In",this,"");
ozoomOut = new QPushButton("Zoom Out",this,"");
oscroll->setMaxValue(1000);
oscroll->setMinValue(0);
h->addWidget(oscroll);
h->addWidget(ozoomIn);
h->addWidget(ozoomOut);
ozoomOut->setMaximumWidth(70);
ozoomIn->setMaximumWidth(70);
connect(oscroll,SIGNAL(valueChanged(int)),this,SLOT(scroll()));
connect(ozoomOut,SIGNAL(clicked()),this,SLOT(zoomOut()));
connect(ozoomIn,SIGNAL(clicked()),this,SLOT(zoomIn()));
}
void BQwtPlotControlBasic::addPlot(BQwtPlot* plot) {
oplots.append(plot);
}
void BQwtPlotControlBasic::zoomIn() {
int max,actual;
BIter i;
for (oplots.start(i);! oplots.isEnd(i);oplots.next(i)) {
oplots[i]->zoomIn();
}
oplots[oplots.end()]->getRange(max,actual);
oscroll->setMaxValue(max);
}
void BQwtPlotControlBasic::zoomOut() {
int max,actual;
BIter i;
for (oplots.start(i);! oplots.isEnd(i);oplots.next(i)) {
oplots[i]->zoomOut();
}
oplots[oplots.end()]->getRange(max,actual);
oscroll->setMaxValue(max);
}
void BQwtPlotControlBasic::scroll() {
BIter i;
for (oplots.start(i);! oplots.isEnd(i);oplots.next(i)) {
oplots[i]->setPosition(oscroll->value());
}
}
BQwtPlotControl::BQwtPlotControl(QWidget *p,BQwtPlot* plot) : oplot(plot) {
int row;
int col;
double ymin;
double ymax;
QGridLayout* v = new QGridLayout(this);
QPushButton* close = new QPushButton("Close",this,"close");
oscroll = new QScrollBar(Qt::Horizontal,this);
ozoomIn = new QPushButton("Zoom In",this,"");
ozoomOut = new QPushButton("Zoom Out",this,"");
oymax = new QSpinBox(this);
oymin = new QSpinBox(this);
oymax->setMaxValue(INT_MAX);
oymax->setMinValue(INT_MIN);
oymax->setLineStep(1000);
oymin->setMaxValue(INT_MAX);
oymin->setMinValue(INT_MIN);
oymin->setLineStep(1000);
row = 0;
col = 0;
v->setSpacing(5);
v->addWidget(new QLabel("Y Axis Max",this,""),row,col); v->addWidget(oymax,row,col+1); row++;
v->addWidget(new QLabel("Y Axis Min",this,""),row,col); v->addWidget(oymin,row,col+1); row++;
v->addWidget(ozoomIn,row,col); v->addWidget(ozoomOut,row,col+1); row++;
v->addMultiCellWidget(oscroll,row,row,col,col+1); row++;
v->addWidget(close,row,col+1);
oplot->getYLeftMaxMin(ymin,ymax);
oymax->setValue((int)ymax);
oymin->setValue((int)ymin);
connect(oymax,SIGNAL(valueChanged(int)),this,SLOT(update()));
connect(oymin,SIGNAL(valueChanged(int)),this,SLOT(update()));
connect(close,SIGNAL(released()),this,SLOT(close()));
connect(oscroll,SIGNAL(valueChanged(int)),this,SLOT(scroll()));
connect(ozoomOut,SIGNAL(clicked()),this,SLOT(zoomOut()));
connect(ozoomIn,SIGNAL(clicked()),this,SLOT(zoomIn()));
}
void BQwtPlotControl::update() {
double mn = oymin->value();
double mx = oymax->value();
oplot->setAxisScale(QwtPlot::yLeft,mn,mx);
oplot->replot();
}
void BQwtPlotControl::zoomIn() {
oplot->zoomIn();
}
void BQwtPlotControl::zoomOut() {
oplot->zoomOut();
}
void BQwtPlotControl::scroll() {
oplot->setPosition(oscroll->value());
}
void BQwtPlotControl::close() {
this->hide();
}
CurveInfo::CurveInfo(BString ititle,BString icolour,BQwtPlot* iplot,double igain,double ioffset) {
title = ititle;
colour = icolour;
plot = iplot;
gain = igain;
offset = ioffset;
curve = 0;
}
void CurveInfo::applyGainAndOffset() {
int n;
for (n =0;n< data.size();n++) {
data[n] = (data[n] * gain) + offset;
}
}
