6 plotter::plotter(QWidget *parent)
9 setBackgroundRole(QPalette::Dark);
10 setAutoFillBackground(
true);
11 setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
12 setFocusPolicy(Qt::StrongFocus);
13 rubberBandIsShown =
false;
27 void plotter::setPlotSettings(
const PlotSettings &settings)
30 zoomStack.append(settings);
60 void plotter::setCurveData(
int id,
const QVector<QPointF> &data)
66 void plotter::clearCurve(
int id)
72 QSize plotter::minimumSizeHint()
const
74 return QSize(6*Margin,4*Margin);
77 QSize plotter::sizeHint()
const
79 return QSize(12*Margin, 8*Margin);
82 void plotter::paintEvent(QPaintEvent * )
84 QStylePainter painter(
this);
85 painter.drawPixmap(0,0,pixmap);
101 void plotter::resizeEvent(QResizeEvent * )
110 void plotter::refreshPixmap()
112 pixmap = QPixmap(size());
116 QPainter painter(&pixmap);
117 painter.initFrom(
this);
123 void plotter::drawGrid(QPainter *painter)
125 QRect rect(xMargin+20, Margin-10, width()-2*xMargin, height() -2*Margin);
126 if(!rect.isValid())
return;
129 QPen quiteDark = palette().dark().color().light();
130 QPen light = palette().light().color();
132 for(
int i=0; i<=settings.numXTicks;++i)
134 int x = rect.left() + (i*(rect.width()-1)/settings.numXTicks);
135 double label = settings.minX + (i*settings.spanX()/settings.numXTicks);
136 painter->setPen(quiteDark);
137 painter->drawLine(x,rect.top(),x,rect.bottom());
138 painter->setPen(light);
139 painter->drawLine(x,rect.bottom(),x,rect.bottom()-5);
140 painter->drawText(x,rect.bottom()+5,100,20,Qt::AlignLeft, QString::number(label));
143 painter->drawText(rect.left(),rect.bottom()+20,rect.width(),20,Qt::AlignCenter, settings.xlabel);
146 for(
int j=0; j<=settings.numYTicks;++j)
148 int y = rect.bottom() - (j*(rect.height()-1)/settings.numYTicks);
149 double label = settings.minY + (j*settings.spanY()/settings.numYTicks);
150 painter->setPen(quiteDark);
151 painter->drawLine(rect.left(),y,rect.right(),y);
152 painter->setPen(light);
153 painter->drawLine(rect.left()+5 ,y, rect.left(),y);
154 painter->drawText(rect.left()- xMargin -30, y-10, 100,20,
155 Qt::AlignVCenter|Qt::AlignRight, QString::number(label));
160 drawRotatedText(painter, rect.left()-80, rect.bottom()-40, settings.ylabel);
161 painter->drawRect(rect.adjusted(0,0,-1,-1));
166 void plotter::drawRotatedText(QPainter *painter,
int x,
int y,
const QString &text)
169 painter->translate(x, y);
170 painter->rotate(270);
171 painter->drawText(0, 0, text);
176 void plotter::drawCurve(QPainter *painter)
178 static const QColor colorForIds[6] = {Qt::red,Qt::green,Qt::blue,Qt::cyan,Qt::magenta,Qt::yellow};
181 QRect rect(xMargin+20, Margin-10, width()-2*xMargin, height()-2*Margin);
182 if(!rect.isValid())
return;
184 painter->setClipRect(rect.adjusted(+1,+1,-1,-1));
185 QMapIterator <int, QVector<QPointF> > i(curveMap);
186 while (i.hasNext()) {
189 QVector<QPointF> data = i.value();
190 QPolygonF polyline(data.count());
191 for(
int j=0; j<data.count(); ++j){
192 double dx = data[j].x() - settings.minX;
193 double dy = data[j].y() - settings.minY;
194 double x = rect.left() + (dx*(rect.width()-1)/settings.spanX());
195 double y = rect.bottom() - (dy *(rect.height()-1)/settings.spanY());
196 polyline[j] = QPointF(x,y);
198 painter->setPen(colorForIds[uint(
id) % 6]);
199 painter->drawPolyline(polyline);
203 PlotSettings::PlotSettings()
214 void PlotSettings::adjustAxis(
double &min,
double &max,
int &numTicks)
216 const int MinTicks = 4;
217 double grossStep = (max-min)/ MinTicks;
218 double step = std::pow(10.0, std::floor(std::log10(grossStep)));
220 if(5*step<grossStep){
223 else if(2*step < grossStep){
227 numTicks = int(std::ceil(max/step) - std::floor(min/step));
228 if(numTicks < MinTicks)
230 min = std::floor(min/step)*step;
231 max = std::ceil(max/step)*step;