/*!
\brief Draw dots
\param painter Painter
\param xMap x map
\param yMap y map
\param from index of the first point to be painted
\param to index of the last point to be painted
\sa QwtCurve::drawPolyline, QwtCurve::drawLine,
QwtCurve::drawLines, QwtCurve::drawSpline, QwtCurve::drawSteps
QwtCurve::drawPolyline, QwtCurve::drawPolygon
*/
void QwtCurve::drawDots(QPainter *painter,
const QwtDiMap &xMap, const QwtDiMap &yMap, int from, int to)
{
const bool doFill = painter->brush().style() != Qt::NoBrush;
QPointArray polyline;
if ( doFill )
polyline.resize(to - from + 1);
for (int i = from; i <= to; i++)
{
int xi = xMap.transform(x(i));
int yi = yMap.transform(y(i));
QwtPainter::drawPoint(painter, xi, yi);
if ( doFill )
polyline.setPoint(i - from, xi, yi);
}
if ( doFill )
{
closePolyline(xMap, yMap, polyline);
painter->setPen(QPen(Qt::NoPen));
QwtPainter::drawPolygon(painter, polyline);
}
}
/*!
\brief Draw step function
\param painter Painter
\param xMap x map
\param yMap y map
\param from index of the first point to be painted
\param to index of the last point to be painted
\sa QwtCurve::draw, QwtCurve::drawCurve, QwtCurve::drawDots,
QwtCurve::drawLines, QwtCurve::drawSpline, QwtCurve::drawSticks
*/
void QwtCurve::drawSteps(QPainter *painter,
const QwtDiMap &xMap, const QwtDiMap &yMap, int from, int to)
{
QPointArray polyline(2 * (to - from) + 1);
bool inverted = d_options & Yfx;
if ( d_options & Inverted )
inverted = !inverted;
int i,ip;
for (i = from, ip = 0; i <= to; i++, ip += 2)
{
int xi = xMap.transform(x(i));
int yi = yMap.transform(y(i));
if ( ip > 0 )
{
if (inverted)
polyline.setPoint(ip - 1, polyline[ip-2].x(), yi);
else
polyline.setPoint(ip - 1, xi, polyline[ip-2].y());
}
polyline.setPoint(ip, xi, yi);
}
QwtPainter::drawPolyline(painter, polyline);
if ( painter->brush().style() != Qt::NoBrush )
{
closePolyline(xMap, yMap, polyline);
painter->setPen(QPen(Qt::NoPen));
QwtPainter::drawPolygon(painter, polyline);
}
}
/*!
Translate a point from plot into pixel coordinates
\return Point in pixel coordinates
\sa QwtPlotPicker::invTransform()
*/
QPoint QwtPlotPicker::transform(const QwtDoublePoint &pos) const
{
QwtDiMap xMap = plot()->canvasMap(d_xAxis);
QwtDiMap yMap = plot()->canvasMap(d_yAxis);
return QPoint(
xMap.transform(pos.x()),
yMap.transform(pos.y())
);
}
/*!
Translate a rectangle from plot into pixel coordinates
\return Rectangle in pixel coordinates
\sa QwtPlotPicker::invTransform()
*/
QRect QwtPlotPicker::transform(const QwtDoubleRect &rect) const
{
QwtDiMap xMap = plot()->canvasMap(d_xAxis);
QwtDiMap yMap = plot()->canvasMap(d_yAxis);
const int x1 = xMap.transform(rect.x1());
const int x2 = xMap.transform(rect.x2());
const int y1 = yMap.transform(rect.y1());
const int y2 = yMap.transform(rect.y2());
return QRect(x1, y1, x2 - x1, y2 - y1);
}
/*!
\brief Draw sticks
\param painter Painter
\param xMap x map
\param yMap y map
\param from index of the first point to be painted
\param to index of the last point to be painted
\sa QwtCurve::draw, QwtCurve::drawCurve, QwtCurve::drawDots,
QwtCurve::drawLines, QwtCurve::drawSpline, QwtCurve::drawSteps
*/
void QwtCurve::drawSticks(QPainter *painter,
const QwtDiMap &xMap, const QwtDiMap &yMap, int from, int to)
{
int x0 = xMap.transform(d_ref);
int y0 = yMap.transform(d_ref);
for (int i = from; i <= to; i++)
{
int xi = xMap.transform(x(i));
int yi = yMap.transform(y(i));
if (d_options & Xfy)
QwtPainter::drawLine(painter, x0, yi, xi, yi);
else
QwtPainter::drawLine(painter, xi, y0, xi, yi);
}
}
/*!
\brief Draw symbols
\param painter Painter
\param symbol Curve symbol
\param xMap x map
\param yMap y map
\param from index of the first point to be painted
\param to index of the last point to be painted
*/
void QwtCurve::drawSymbols(QPainter *painter, QwtSymbol &symbol,
const QwtDiMap &xMap, const QwtDiMap &yMap, int from, int to)
{
painter->setBrush(symbol.brush());
painter->setPen(symbol.pen());
QRect rect;
rect.setSize(QwtPainter::metricsMap().screenToLayout(symbol.size()));
for (int i = from; i <= to; i++)
{
const int xi = xMap.transform(x(i));
const int yi = yMap.transform(y(i));
rect.moveCenter(QPoint(xi, yi));
symbol.draw(painter, rect);
}
}
/*!
\param axis Axis
\return Map for the axis on the canvas. With this map pixel coordinates can
translated to plot coordinates and vice versa.
\sa QwtDiMap, QwtPlot::transform, QwtPlot::invTransform
*/
QwtDiMap QwtPlot::canvasMap(int axis) const
{
QwtDiMap map;
if ( d_canvas && d_scale[axis] )
{
const QwtScale *s = d_scale[axis];
map = *s->scaleDraw();
if ( axis == yLeft || axis == yRight )
{
int y = s->y() + s->startBorderDist() - d_canvas->y();
int h = s->height() - s->startBorderDist() - s->endBorderDist();
map.setIntRange(y + h, y);
}
else
{
int x = s->x() + s->startBorderDist() - d_canvas->x();
int w = s->width() - s->startBorderDist() - s->endBorderDist();
map.setIntRange(x, x + w);
}
}
return map;
}
void QwtCurve::closePolyline(const QwtDiMap &xMap, const QwtDiMap &yMap,
QPointArray &pa) const
{
const int sz = pa.size();
if ( sz < 2 )
return;
pa.resize(sz + 2);
if ( d_options & QwtCurve::Xfy )
{
pa.setPoint(sz,
xMap.transform(d_ref), pa.point(sz - 1).y());
pa.setPoint(sz + 1,
xMap.transform(d_ref), pa.point(0).y());
}
else
{
pa.setPoint(sz,
pa.point(sz - 1).x(), yMap.transform(d_ref));
pa.setPoint(pa.size() - 1,
pa.point(0).x(), yMap.transform(d_ref));
}
}
/*!
Translate a rectangle from pixel into plot coordinates
\return Rectangle in plot coordinates
\sa QwtPlotPicker::transform()
*/
QwtDoubleRect QwtPlotPicker::invTransform(const QRect &rect) const
{
QwtDiMap xMap = plot()->canvasMap(d_xAxis);
QwtDiMap yMap = plot()->canvasMap(d_yAxis);
return QwtDoubleRect(
xMap.invTransform(rect.left()),
xMap.invTransform(rect.right()),
yMap.invTransform(rect.top()),
yMap.invTransform(rect.bottom())
);
}
/*!
\param axis Axis
\return Map for the axis on the canvas. With this map pixel coordinates can
translated to plot coordinates and vice versa.
\sa QwtDiMap, QwtPlot::transform, QwtPlot::invTransform
*/
QwtDiMap QwtPlot::canvasMap(int axis) const
{
QwtDiMap map;
if ( !d_canvas )
return map;
const QwtScaleDiv &sd = d_as[axis].scaleDiv();
map.setDblRange(sd.lBound(), sd.hBound(), sd.logScale());
if ( axisEnabled(axis) )
{
const QwtScale *s = d_scale[axis];
if ( axis == yLeft || axis == yRight )
{
int y = s->y() + s->startBorderDist() - d_canvas->y();
int h = s->height() - s->startBorderDist() - s->endBorderDist();
map.setIntRange(y + h - 1, y);
}
else
{
int x = s->x() + s->startBorderDist() - d_canvas->x();
int w = s->width() - s->startBorderDist() - s->endBorderDist();
map.setIntRange(x, x + w - 1);
}
}
else
{
const int margin = plotLayout()->canvasMargin(axis);
const QRect &canvasRect = d_canvas->contentsRect();
if ( axis == yLeft || axis == yRight )
{
map.setIntRange(canvasRect.bottom() - margin,
canvasRect.top() + margin);
}
else
{
map.setIntRange(canvasRect.left() + margin,
canvasRect.right() - margin);
}
}
return map;
}
void BoxCurve::drawSymbols(QPainter *painter, const QwtDiMap &xMap, const QwtDiMap &yMap, double *dat, int size)
{
const int px = xMap.transform(x(0));
QwtSymbol s = this->symbol();
if (min_style != QwtSymbol::None)
{
const int py_min = yMap.transform(y(0));
s.setStyle(min_style);
s.draw(painter, px, py_min);
}
if (max_style != QwtSymbol::None)
{
const int py_max = yMap.transform(y(size - 1));
s.setStyle(max_style);
s.draw(painter, px, py_max);
}
if (p1_style != QwtSymbol::None)
{
const int p1 = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.01));
s.setStyle(p1_style);
s.draw(painter, px, p1);
}
if (p99_style != QwtSymbol::None)
{
const int p99 = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.99));
s.setStyle(p99_style);
s.draw(painter, px, p99);
}
if (mean_style != QwtSymbol::None)
{
const int mean = yMap.transform(gsl_stats_mean(dat, 1, size));
s.setStyle(mean_style);
s.draw(painter, px, mean);
}
}
void BoxCurve::drawBox(QPainter *painter, const QwtDiMap &xMap, const QwtDiMap &yMap, double *dat, int size)
{
const int px = xMap.transform(x(0));
const int px_min = xMap.transform(x(0) - 0.5);
const int px_max = xMap.transform(x(0) + 0.5);
const int box_width = 1+(px_max - px_min)*b_width/100;
const int hbw = box_width/2;
const int median = yMap.transform(gsl_stats_median_from_sorted_data (dat, 1, size));
int b_lowerq, b_upperq;
double sd, se, mean;
if(w_range == SD || w_range == SE || b_range == SD || b_range == SE)
{
sd = gsl_stats_sd(dat, 1, size);
se = sd/sqrt((double)size);
mean = gsl_stats_mean(dat, 1, size);
}
if(b_range == SD)
{
b_lowerq = yMap.transform(mean - sd*b_coeff);
b_upperq = yMap.transform(mean + sd*b_coeff);
}
else if(b_range == SE)
{
b_lowerq = yMap.transform(mean - se*b_coeff);
b_upperq = yMap.transform(mean + se*b_coeff);
}
else
{
b_lowerq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 1-0.01*b_coeff));
b_upperq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.01*b_coeff));
}
//draw box
if (b_style == Rect)
{
const QRect r = QRect(px - hbw, b_upperq, box_width, b_lowerq - b_upperq + 1);
painter->fillRect(r, QwtPlotCurve::brush());
painter->drawRect(r);
}
else if (b_style == Diamond)
{
const QPointArray pa(4);
pa[0] = QPoint(px, b_upperq);
pa[1] = QPoint(px + hbw, median);
pa[2] = QPoint(px, b_lowerq);
pa[3] = QPoint(px - hbw, median);
painter->setBrush(QwtPlotCurve::brush());
painter->drawPolygon(pa);
}
else if (b_style == WindBox)
{
const int lowerq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.25));
const int upperq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.75));
const QPointArray pa(8);
pa[0] = QPoint(px + hbw, b_upperq);
pa[1] = QPoint(int(px + 0.4*box_width), upperq);
pa[2] = QPoint(int(px + 0.4*box_width), lowerq);
pa[3] = QPoint(px + hbw, b_lowerq);
pa[4] = QPoint(px - hbw, b_lowerq);
pa[5] = QPoint(int(px - 0.4*box_width), lowerq);
pa[6] = QPoint(int(px - 0.4*box_width), upperq);
pa[7] = QPoint(px - hbw, b_upperq);
painter->setBrush(QwtPlotCurve::brush());
painter->drawPolygon(pa);
}
else if (b_style == Notch)
{
int j = (int)ceil(0.5*(size - 1.96*sqrt((double)size)));
int k = (int)ceil(0.5*(size + 1.96*sqrt((double)size)));
const int lowerCI = yMap.transform(dat[j]);
const int upperCI = yMap.transform(dat[k]);
const QPointArray pa(10);
pa[0] = QPoint(px + hbw, b_upperq);
pa[1] = QPoint(px + hbw, upperCI);
pa[2] = QPoint(int(px + 0.25*hbw), median);
pa[3] = QPoint(px + hbw, lowerCI);
pa[4] = QPoint(px + hbw, b_lowerq);
pa[5] = QPoint(px - hbw, b_lowerq);
pa[6] = QPoint(px - hbw, lowerCI);
pa[7] = QPoint(int(px - 0.25*hbw), median);
pa[8] = QPoint(px - hbw, upperCI);
pa[9] = QPoint(px - hbw, b_upperq);
painter->setBrush(QwtPlotCurve::brush());
painter->drawPolygon(pa);
}
if (w_range)
{//draw whiskers
const int l = int(0.1*box_width);
int w_upperq, w_lowerq;
if(w_range == SD)
{
w_lowerq = yMap.transform(mean - sd*w_coeff);
w_upperq = yMap.transform(mean + sd*w_coeff);
}
else if(w_range == SE)
{
w_lowerq = yMap.transform(mean - se*w_coeff);
w_upperq = yMap.transform(mean + se*w_coeff);
}
else
{
w_lowerq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 1-0.01*w_coeff));
w_upperq = yMap.transform(gsl_stats_quantile_from_sorted_data (dat, 1, size, 0.01*w_coeff));
}
painter->drawLine(px - l, w_lowerq, px + l, w_lowerq);
painter->drawLine(px - l, w_upperq, px + l, w_upperq);
if (b_style)
{
if (w_upperq != b_upperq)
painter->drawLine(px, w_upperq, px, b_upperq);
if (w_lowerq != b_lowerq)
painter->drawLine(px, w_lowerq, px, b_lowerq);
}
else
painter->drawLine(px, w_upperq, px, w_lowerq);
}
//draw median line
if (b_style == Notch || b_style == NoBox)
return;
if (b_style == WindBox)
painter->drawLine(int(px - 0.4*box_width), median, int(px + 0.4*box_width), median);
else
painter->drawLine(px - hbw, median, px + hbw, median);
}
/*!
\brief Draw a spline
\param painter Painter
\param xMap x map
\param yMap y map
\sa QwtCurve::draw, QwtCurve::drawCurve, QwtCurve::drawDots,
QwtCurve::drawLines, QwtCurve::drawSteps, QwtCurve::drawSticks
*/
void QwtCurve::drawSpline(QPainter *painter,
const QwtDiMap &xMap, const QwtDiMap &yMap)
{
register int i;
int size = dataSize();
double *txval = new double[size];
double *tyval = new double[size];
if ( !txval || !tyval )
{
if (txval) delete[] txval;
if (tyval) delete[] tyval;
return;
}
QPointArray polyline(d_splineSize);
//
// Transform x and y values to window coordinates
// to avoid a distinction between linear and
// logarithmic scales.
//
for (i=0;i<size;i++)
{
txval[i] = xMap.xTransform(x(i));
tyval[i] = yMap.xTransform(y(i));
}
int stype;
if (! (d_options & (Yfx|Xfy|Parametric)))
{
if (qwtChkMono(txval, size))
{
stype = Yfx;
}
else
{
if(qwtChkMono(tyval, size))
{
stype = Xfy;
}
else
{
stype = Parametric;
if ( (d_options & Periodic) ||
( (x(0) == x(size-1))
&& (y(0) == y(size-1))))
{
stype |= Periodic;
}
}
}
}
else
{
stype = d_options;
}
if (stype & Parametric)
{
double *param = new double[size];
if (param)
{
//
// setup parameter vector
//
param[0] = 0.0;
for (i=1; i<size; i++)
{
double delta = sqrt( qwtSqr(txval[i] - txval[i-1])
+ qwtSqr( tyval[i] - tyval[i-1]));
param[i] = param[i-1] + qwtMax(delta, 1.0);
}
//
// setup splines
int rc = d_spx.recalc(param, txval, size, stype & Periodic);
if (!rc)
rc = d_spy.recalc(param, tyval, size, stype & Periodic);
if (rc)
{
drawLines(painter, xMap, yMap, 0, size - 1);
}
else
{
// fill point array
double delta = param[size - 1] / double(d_splineSize-1);
for (i=0;i<d_splineSize;i++)
{
double dtmp = delta * double(i);
polyline.setPoint(i, int(floor (d_spx.value(dtmp) + 0.5)),
int(floor (d_spy.value(dtmp) + 0.5)));
}
}
delete[] param;
}
}
else if (stype & Xfy)
{
if (tyval[size-1] < tyval[0])
{
qwtTwistArray(txval, size);
qwtTwistArray(tyval, size);
}
// 1. Calculate spline coefficients
int rc = d_spx.recalc(tyval, txval, size, stype & Periodic);
if (rc) // an error occurred
{
drawLines(painter, xMap, yMap, 0, size - 1);
}
else // Spline OK
{
double ymin = qwtGetMin(tyval, size);
double ymax = qwtGetMax(tyval, size);
double delta = (ymax - ymin) / double(d_splineSize - 1);
for (i=0;i<d_splineSize;i++)
{
double dtmp = ymin + delta * double(i);
polyline.setPoint(i, int(floor(d_spx.value(dtmp) + 0.5)),
int(floor(dtmp + 0.5)));
}
}
}
else
{
if (txval[size-1] < txval[0])
{
qwtTwistArray(tyval, size);
qwtTwistArray(txval, size);
}
// 1. Calculate spline coefficients
int rc = d_spy.recalc(txval, tyval, size, stype & Periodic);
if (rc) // error
{
drawLines(painter, xMap, yMap, 0, size - 1);
}
else // Spline OK
{
double xmin = qwtGetMin(txval, size);
double xmax = qwtGetMax(txval, size);
double delta = (xmax - xmin) / double(d_splineSize - 1);
for (i=0;i<d_splineSize;i++)
{
double dtmp = xmin + delta * double(i);
polyline.setPoint(i, int(floor (dtmp + 0.5)),
int(floor(d_spy.value(dtmp) + 0.5)));
}
}
}
delete[] txval;
delete[] tyval;
QwtPainter::drawPolyline(painter, polyline);
if ( painter->brush().style() != Qt::NoBrush )
{
closePolyline(xMap, yMap, polyline);
painter->setPen(QPen(Qt::NoPen));
QwtPainter::drawPolygon(painter, polyline);
}
}
void QwtBarCurve::draw(QPainter *painter,
const QwtDiMap &xMap, const QwtDiMap &yMap, int from, int to)
{
if ( !painter || dataSize() <= 0 )
return;
if (to < 0)
to = dataSize() - 1;
if ( verifyRange(from, to) > 0 )
{
painter->save();
painter->setPen(QwtPlotCurve::pen());
painter->setBrush(QwtPlotCurve::brush());
int dx,dy,ref,bar_width;
if (bar_style == Vertical)
ref= yMap.transform(1e-100); //smalest positive value for log scales
else
ref= xMap.transform(1e-100);
int i;
if (bar_style == Vertical)
{
dx = abs(xMap.transform(x(from+1))-xMap.transform(x(from)));
for (i=from+2; i<to; i++)
{
int min = abs(xMap.transform(x(i+1))-xMap.transform(x(i)));
if (min <= dx)
dx=min;
}
bar_width=int(dx*(1-bar_gap*0.01));
}
else
{
dy = abs(yMap.transform(y(from+1))-yMap.transform(y(from)));
for (i=from+2; i<to; i++)
{
int min = abs(yMap.transform(y(i+1))-yMap.transform(y(i)));
if (min <= dy)
dy=min;
}
bar_width=int(dy*(1-bar_gap*0.01));
}
const int half_width = int((0.5-bar_offset*0.01)*bar_width);
const int bw1 = bar_width+1;
for (i=from; i<=to; i++)
{
const int px = xMap.transform(x(i));
const int py = yMap.transform(y(i));
if (bar_style == Vertical)
{
if (y(i) < 0)
painter->drawRect(px-half_width, ref, bw1, (py-ref));
else
painter->drawRect(px-half_width, py, bw1, (ref-py+1));
}
else
{
if (x(i) < 0)
painter->drawRect(px, py-half_width, (ref-px), bw1);
else
painter->drawRect(ref, py-half_width,(px-ref), bw1);
}
}
painter->restore();
}
}
void Plot::drawInwardMinorTicks(QPainter *painter, const QRect &rect,
const QwtDiMap &map, int axis) const
{
QwtScale *scale=(QwtScale *) QwtPlot::axis (axis);
if (!scale)
return;
int x1=rect.left();
int x2=rect.right();
int y1=rect.top();
int y2=rect.bottom();
QPalette pal=scale->palette();
QColor color=pal.color(QPalette::Active, QColorGroup::Foreground);
painter->save();
painter->setPen(QPen(color, d_lineWidth, QPainter::SolidLine));
QwtScaleDiv *scDiv=(QwtScaleDiv *)axisScale(axis);
int minTicks=scDiv->minCnt();
int j, x, y, low,high;
switch (axis)
{
case QwtPlot::yLeft:
x=x1;
low=y1+majTickLength;
high=y2-majTickLength;
for (j = 0; j < minTicks; j++)
{
y = map.transform(scDiv->minMark(j));
if (y>low && y< high)
QwtPainter::drawLine(painter, x, y, x+minTickLength, y);
}
break;
case QwtPlot::yRight:
{
x=x2;
low=y1+majTickLength;
high=y2-majTickLength;
for (j = 0; j < minTicks; j++)
{
y = map.transform(scDiv->minMark(j));
if (y>low && y< high)
QwtPainter::drawLine(painter, x+1, y, x-minTickLength, y);
}
}
break;
case QwtPlot::xBottom:
y=y2;
low=x1+majTickLength;
high=x2-majTickLength;
for (j = 0; j < minTicks; j++)
{
x = map.transform(scDiv->minMark(j));
if (x>low && x<high)
QwtPainter::drawLine(painter, x, y+1, x, y-minTickLength);
}
break;
case QwtPlot::xTop:
y=y1;
low=x1+majTickLength;
high=x2-majTickLength;
for (j = 0; j < minTicks; j++)
{
x = map.transform(scDiv->minMark(j));
if (x>low && x<high)
QwtPainter::drawLine(painter, x, y, x, y + minTickLength);
}
break;
}
painter->restore();
}