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//Author: Timothy Pearson <kb9vqf@pearsoncomputing.net>, (C) 2012
//Copyright: See COPYING file that comes with this distribution
#include "tracewidget.h"
#include <stdlib.h>
#include <tqpixmap.h>
#include <tqpainter.h>
#define VERIFY_TRACE_ARRAY_SIZE if (traceNumber >= m_traceArray.count()) resizeTraceArray(traceNumber+1);
TraceData::TraceData() {
color = TQColor(0, 255, 0);
numberOfSamples = 0;
leftEdge = 0;
rightEdge = 0;
topEdge = 0;
bottomEdge = 0;
enabled = false;
}
void TraceData::drawTrace(TQPainter* p, int graticule_width, int graticule_height) {
p->setPen(color);
if ((bottomEdge != topEdge) && (enabled)) {
// Draw the points
unsigned int n;
int x,y,x2,y2;
for (n=0; n<numberOfSamples-1; n++) {
x = abs(((n*1.0)/(numberOfSamples-1))*(graticule_width));
y = abs(((sampleArray[n]-topEdge)/(bottomEdge-topEdge))*(graticule_height));
x2 = abs(((n+1*1.0)/(numberOfSamples-1))*(graticule_width));
y2 = abs(((sampleArray[n+1]-topEdge)/(bottomEdge-topEdge))*(graticule_height));
p->drawLine(x, y, x2, y2);
}
}
}
TraceWidget::TraceWidget(TQWidget* parent, const char* name) : TQWidget(parent, name),
m_horizDivs(0),
m_vertDivs(0),
m_graticulePixmap(0) {
setBackgroundMode(NoBackground);
setPaletteBackgroundColor(TQt::black);
setPaletteForegroundColor(TQColor(0,128,0));
}
TraceWidget::~TraceWidget() {
resizeTraceArray(0);
}
void TraceWidget::setNumberOfSamples(unsigned int samples, uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
m_traceArray[traceNumber]->numberOfSamples = samples;
m_traceArray[traceNumber]->sampleArray.resize(samples);
updateGraticule();
}
void TraceWidget::setNumberOfHorizontalDivisions(unsigned int divisions) {
m_horizDivs = divisions;
updateGraticule();
}
void TraceWidget::setNumberOfVerticalDivisions(unsigned int divisions) {
m_vertDivs = divisions;
updateGraticule();
}
void TraceWidget::setDisplayLimits(double x, double y, double w, double h, uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
m_traceArray[traceNumber]->leftEdge = x;
m_traceArray[traceNumber]->rightEdge = w;
m_traceArray[traceNumber]->topEdge = y;
m_traceArray[traceNumber]->bottomEdge = h;
}
TQDoubleArray& TraceWidget::samples(uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
return m_traceArray[traceNumber]->sampleArray;
}
void TraceWidget::setSamples(TQDoubleArray& tqda, uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
m_traceArray[traceNumber]->sampleArray = tqda;
m_traceArray[traceNumber]->numberOfSamples = tqda.size();
}
TQColor& TraceWidget::traceColor(uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
return m_traceArray[traceNumber]->color;
}
void TraceWidget::setTraceColor(TQColor& color, uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
m_traceArray[traceNumber]->color = color;
}
bool TraceWidget::traceEnabled(uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
return m_traceArray[traceNumber]->enabled;
}
void TraceWidget::setTraceEnabled(bool enabled, uint traceNumber) {
VERIFY_TRACE_ARRAY_SIZE
m_traceArray[traceNumber]->enabled = enabled;
}
void TraceWidget::resizeTraceArray(uint newsize) {
uint oldcount = m_traceArray.count();
if (newsize > oldcount) {
m_traceArray.resize(newsize);
for (uint i=oldcount;i<newsize;i++) {
m_traceArray[i] = new TraceData;
}
}
else {
m_traceArray.resize(newsize);
for (uint i=newsize;i<oldcount;i++) {
delete m_traceArray[i];
}
}
}
void TraceWidget::updateGraticule() {
unsigned int d,s,x,y;
if (m_graticulePixmap) {
delete m_graticulePixmap;
}
m_graticulePixmap = new TQPixmap(width(), height());
// Draw the graticule into the pixmap
TQPainter p(m_graticulePixmap);
p.setPen(TQPen(foregroundColor(), 1, TQt::SolidLine));
p.fillRect(0, 0, m_graticulePixmap->width(), m_graticulePixmap->height(), backgroundColor());
p.setPen(TQPen(foregroundColor(), 1, TQt::DotLine));
if (m_vertDivs > 0) {
s = m_graticulePixmap->width() / m_vertDivs;
x = 0;
for (d=0; d<m_vertDivs; d++) {
p.drawLine(x, 0, x, m_graticulePixmap->height());
x += s;
}
}
if (m_horizDivs > 0) {
s = m_graticulePixmap->height() / m_horizDivs;
y = 0;
for (d=0; d<m_horizDivs; d++) {
p.drawLine(0, y, m_graticulePixmap->width(), y);
y += s;
}
}
p.setPen(TQPen(foregroundColor(), 1, TQt::SolidLine));
p.drawRect(0, 0, m_graticulePixmap->width(), m_graticulePixmap->height());
// Repaint the widget
repaint();
}
void TraceWidget::paintEvent(TQPaintEvent*) {
TQPainter p(this);
if (m_graticulePixmap) {
// Draw the graticule pixmap to erase the widget
p.drawPixmap(0, 0, *m_graticulePixmap);
// Draw the traces
for (uint trace=0;trace<m_traceArray.count();trace++) {
m_traceArray[trace]->drawTrace(&p, m_graticulePixmap->width(), m_graticulePixmap->height());
}
}
else {
p.fillRect(x(), y(), width(), height(), backgroundColor());
}
}
void TraceWidget::resizeEvent(TQResizeEvent *) {
updateGraticule();
}
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