void ScaleDraw::drawTick(QPainter *p, double value, int len) const
{
int axis = this->axis();
ScaleEngine *sc_engine = (ScaleEngine *)d_plot->axisScaleEngine(axis);
if (sc_engine->hasBreak()){
double dlb = sc_engine->axisBreakLeft();
double drb = sc_engine->axisBreakRight();
if ((dlb < value && drb > value) ||
((axis == QwtPlot::yLeft || axis == QwtPlot::xBottom) && value == dlb) ||
((axis == QwtPlot::yRight || axis == QwtPlot::xTop) && value == drb) ||
(sc_engine->testAttribute(QwtScaleEngine::Inverted) && (value == dlb || value == drb)))
return;
if (d_plot->isPrinting()){
QwtScaleMap scaleMap = map();
double val = scaleMap.transform(value);
if (val >= scaleMap.transform(dlb) && val <= scaleMap.transform(drb))
return;
}
}
QwtScaleDiv scDiv = scaleDiv();
QwtValueList majTicks = scDiv.ticks(QwtScaleDiv::MajorTick);
if (majTicks.contains(value)){
if (d_majTicks == In || d_majTicks == None)
return;
switch (d_show_ticks_policy){
case ShowAll:
break;
case HideBegin:
if (majTicks.first() == value)
return;
break;
case HideEnd:
if (majTicks.last() == value)
return;
break;
case HideBeginEnd:
if (majTicks.first() == value || majTicks.last() == value)
return;
break;
}
}
QwtValueList medTicks = scDiv.ticks(QwtScaleDiv::MediumTick);
if (medTicks.contains(value) && (d_minTicks == In || d_minTicks == None))
return;
QwtValueList minTicks = scDiv.ticks(QwtScaleDiv::MinorTick);
if (minTicks.contains(value) && (d_minTicks == In || d_minTicks == None))
return;
QwtScaleDraw::drawTick(p, value, len);
}
/*!
Remove ticks from a list, that are not inside an interval
\param ticks Tick list
\param interval Interval
\return Stripped tick list
*/
QwtValueList QwtScaleEngine::strip(
const QwtValueList& ticks,
const QwtDoubleInterval &interval) const
{
if ( !interval.isValid() || ticks.count() == 0 )
return QwtValueList();
if ( contains(interval, ticks.first())
&& contains(interval, ticks.last()) )
{
return ticks;
}
QwtValueList strippedTicks;
for ( int i = 0; i < (int)ticks.count(); i++ )
{
if ( contains(interval, ticks[i]) )
strippedTicks += ticks[i];
}
return strippedTicks;
}
void ScaleDraw::drawLabel(QPainter *painter, double value) const
{
if (!d_plot)
return;
ScaleEngine *sc_engine = (ScaleEngine *)d_plot->axisScaleEngine(axis());
if (sc_engine->hasBreak() && sc_engine->axisBreakLeft() <= value && sc_engine->axisBreakRight() > value)
return;
QwtValueList majTicks = scaleDiv().ticks(QwtScaleDiv::MajorTick);
if (majTicks.contains(value)){
switch (d_show_ticks_policy){
case ShowAll:
break;
case HideBegin:
if (majTicks.first() == value)
return;
break;
case HideEnd:
if (majTicks.last() == value)
return;
break;
case HideBeginEnd:
if (majTicks.first() == value || majTicks.last() == value)
return;
break;
}
}
QwtText lbl = tickLabel(painter->font(), value);
if ( lbl.isEmpty() )
return;
QPoint pos = labelPosition(value);
QSize labelSize = lbl.textSize(painter->font());
if ( labelSize.height() % 2 )
labelSize.setHeight(labelSize.height() + 1);
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QwtPainter::resetMetricsMap();
labelSize = metricsMap.layoutToDevice(labelSize);
pos = metricsMap.layoutToDevice(pos);
painter->save();
painter->setMatrix(labelMatrix( pos, labelSize), true);
if (d_selected)
lbl.setBackgroundPen(QPen(Qt::blue));
else
lbl.setBackgroundPen(QPen(Qt::NoPen));
lbl.setRenderFlags(labelAlignment());
lbl.draw (painter, QRect(QPoint(0, 0), labelSize) );
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
painter->restore();
}