void ScaleDraw::drawBreak(QPainter *painter) const {
ScaleEngine *sc_engine =
static_cast<ScaleEngine *>(d_plot->axisScaleEngine(axis()));
/*const QwtScaleEngine * qwtsc_engine=d_plot->axisScaleEngine(axis());
const ScaleEngine *sc_engine =dynamic_cast<const ScaleEngine*>(qwtsc_engine);
if(sc_engine!=NULL)
{*/
if (!sc_engine->hasBreak() || !sc_engine->hasBreakDecoration())
return;
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
int len = majTickLength();
QwtScaleMap scaleMap = map();
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QPoint pos = this->pos();
if (!metricsMap.isIdentity()) {
QwtPainter::resetMetricsMap();
pos = metricsMap.layoutToDevice(pos);
if (orientation() == Qt::Vertical) {
scaleMap.setPaintInterval(metricsMap.layoutToDeviceY((int)scaleMap.p1()),
metricsMap.layoutToDeviceY((int)scaleMap.p2()));
len = metricsMap.layoutToDeviceX(len);
} else {
scaleMap.setPaintInterval(metricsMap.layoutToDeviceX((int)scaleMap.p1()),
metricsMap.layoutToDeviceX((int)scaleMap.p2()));
len = metricsMap.layoutToDeviceY(len);
}
}
int lval = scaleMap.transform(sc_engine->axisBreakLeft());
int rval = scaleMap.transform(sc_engine->axisBreakRight());
switch (alignment()) {
case LeftScale:
QwtPainter::drawLine(painter, pos.x(), lval, pos.x() - len, lval + len);
QwtPainter::drawLine(painter, pos.x(), rval, pos.x() - len, rval + len);
break;
case RightScale:
QwtPainter::drawLine(painter, pos.x(), lval, pos.x() + len, lval - len);
QwtPainter::drawLine(painter, pos.x(), rval, pos.x() + len, rval - len);
break;
case BottomScale:
QwtPainter::drawLine(painter, lval, pos.y(), lval - len, pos.y() + len);
QwtPainter::drawLine(painter, rval, pos.y(), rval - len, pos.y() + len);
break;
case TopScale:
QwtPainter::drawLine(painter, lval, pos.y(), lval + len, pos.y() - len);
QwtPainter::drawLine(painter, rval, pos.y(), rval + len, pos.y() - len);
break;
}
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
painter->restore();
//}
}
void QwtScaleWidget::drawTitle(QPainter *painter,
QwtScaleDraw::Alignment align, const QRect &rect) const
{
QRect r;
double angle;
int flags = d_data->title.renderFlags() &
~(Qt::AlignTop | Qt::AlignBottom | Qt::AlignVCenter);
switch(align)
{
case QwtScaleDraw::LeftScale:
flags |= Qt::AlignTop;
angle = -90.0;
r.setRect(rect.left(), rect.bottom(), rect.height(), rect.width());
break;
case QwtScaleDraw::RightScale:
flags |= Qt::AlignTop;
angle = 90.0;
r.setRect(rect.right(), rect.top(), rect.height(), rect.width());
break;
case QwtScaleDraw::TopScale:
flags |= Qt::AlignTop;
angle = 0.0;
r = rect;
break;
case QwtScaleDraw::BottomScale:
default:
flags |= Qt::AlignBottom;
angle = 0.0;
r = rect;
break;
}
painter->save();
painter->setFont(font());
#if QT_VERSION < 0x040000
painter->setPen(colorGroup().color(QColorGroup::Text));
#else
painter->setPen(palette().color(QPalette::Text));
#endif
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QwtPainter::resetMetricsMap();
r = metricsMap.layoutToDevice(r);
painter->translate(r.x(), r.y());
if (angle != 0.0)
painter->rotate(angle);
QwtText title = d_data->title;
title.setRenderFlags(flags);
title.draw(painter, QRect(0, 0, r.width(), r.height()));
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
painter->restore();
}
void ScaleDraw::drawBreak(QPainter *painter) const
{
ScaleEngine *sc_engine = (ScaleEngine *)d_plot->axisScaleEngine(axis());
if (!sc_engine->hasBreak() || !sc_engine->hasBreakDecoration())
return;
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
QPen pen = painter->pen();
pen.setColor(d_plot->axisWidget(axis())->palette().color(QPalette::Active, QColorGroup::Foreground));
painter->setPen(pen);
int len = d_plot->majorTickLength();
QwtScaleMap scaleMap = map();
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QPoint pos = this->pos();
if (!d_plot->isPrinting()){
QwtPainter::resetMetricsMap();
pos = metricsMap.layoutToDevice(pos);
if ( orientation() == Qt::Vertical ){
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceY((int)scaleMap.p1()),
metricsMap.layoutToDeviceY((int)scaleMap.p2()));
len = metricsMap.layoutToDeviceX(len);
} else {
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceX((int)scaleMap.p1()),
metricsMap.layoutToDeviceX((int)scaleMap.p2()));
len = metricsMap.layoutToDeviceY(len);
}
}
int lval = scaleMap.transform(sc_engine->axisBreakLeft());
int rval = scaleMap.transform(sc_engine->axisBreakRight());
switch(alignment()){
case LeftScale:
case RightScale:
QwtPainter::drawLine(painter, pos.x() + len, lval - len, pos.x() - len, lval + len);
QwtPainter::drawLine(painter, pos.x() + len, rval - len, pos.x() - len, rval + len);
break;
case TopScale:
case BottomScale:
QwtPainter::drawLine(painter, lval + len, pos.y() - len, lval - len, pos.y() + len);
QwtPainter::drawLine(painter, rval + len, pos.y() - len, rval - len, pos.y() + len);
break;
}
if (!d_plot->isPrinting())
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
painter->restore();
}
/*!
Draw a tick
\param painter Painter
\param value Value of the tick
\param len Lenght of the tick
\sa drawBackbone(), drawLabel()
*/
void QwtScaleDraw::drawTick(QPainter *painter, double value, int len) const
{
if ( len <= 0 )
return;
int pw2 = qwtMin((int)painter->pen().width(), len) / 2;
QwtScaleMap scaleMap = map();
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QPoint pos = d_data->pos;
if ( !metricsMap.isIdentity() )
{
/*
The perfect position of the ticks is important.
To avoid rounding errors we have to use
device coordinates.
*/
QwtPainter::resetMetricsMap();
pos = metricsMap.layoutToDevice(pos);
if ( orientation() == Qt::Vertical )
{
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceY((int)scaleMap.p1()),
metricsMap.layoutToDeviceY((int)scaleMap.p2())
);
len = metricsMap.layoutToDeviceX(len);
}
else
{
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceX((int)scaleMap.p1()),
metricsMap.layoutToDeviceX((int)scaleMap.p2())
);
len = metricsMap.layoutToDeviceY(len);
}
}
const int tval = scaleMap.transform(value);
switch(alignment())
{
case LeftScale:
{
#if QT_VERSION < 0x040000
QwtPainter::drawLine(painter, pos.x() + pw2, tval,
pos.x() - len - 2 * pw2, tval);
#else
QwtPainter::drawLine(painter, pos.x() - pw2, tval,
pos.x() - len, tval);
#endif
break;
}
case RightScale:
{
#if QT_VERSION < 0x040000
QwtPainter::drawLine(painter, pos.x(), tval,
pos.x() + len + pw2, tval);
#else
QwtPainter::drawLine(painter, pos.x() + pw2, tval,
pos.x() + len, tval);
#endif
break;
}
case BottomScale:
{
#if QT_VERSION < 0x040000
QwtPainter::drawLine(painter, tval, pos.y(),
tval, pos.y() + len + 2 * pw2);
#else
QwtPainter::drawLine(painter, tval, pos.y() + pw2,
tval, pos.y() + len);
#endif
break;
}
case TopScale:
{
#if QT_VERSION < 0x040000
QwtPainter::drawLine(painter, tval, pos.y() + pw2,
tval, pos.y() - len - 2 * pw2);
#else
QwtPainter::drawLine(painter, tval, pos.y() - pw2,
tval, pos.y() - len);
#endif
break;
}
}
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
}
void ScaleDraw::drawBackbone(QPainter *painter) const
{
ScaleEngine *sc_engine = (ScaleEngine *)d_plot->axisScaleEngine(axis());
/*QwtScaleEngine *qwtsc_engine=d_plot->axisScaleEngine(axis());
ScaleEngine *sc_engine =dynamic_cast<ScaleEngine*>(qwtsc_engine);
if(sc_engine!=NULL)
{*/
if (!sc_engine->hasBreak()){
const int len = length();
const int bw = painter->pen().width();
const int bw2 = bw / 2;
QPoint pos = this->pos();
switch(alignment()){
case LeftScale:
QwtPainter::drawLine(painter, pos.x() - bw2,
pos.y(), pos.x() - bw2, pos.y() + len );
break;
case RightScale:
QwtPainter::drawLine(painter, pos.x() + bw2,
pos.y(), pos.x() + bw2, pos.y() + len);
break;
case TopScale:
QwtPainter::drawLine(painter, pos.x(), pos.y() - bw2,
pos.x() + len, pos.y() - bw2);
break;
case BottomScale:
QwtPainter::drawLine(painter, pos.x(), pos.y() + bw2,
pos.x() + len, pos.y() + bw2);
break;
}
return;
}
QwtScaleMap scaleMap = map();
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QPoint pos = this->pos();
if ( !metricsMap.isIdentity() ){
QwtPainter::resetMetricsMap();
pos = metricsMap.layoutToDevice(pos);
if ( orientation() == Qt::Vertical ){
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceY((int)scaleMap.p1()),
metricsMap.layoutToDeviceY((int)scaleMap.p2()));
} else {
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceX((int)scaleMap.p1()),
metricsMap.layoutToDeviceX((int)scaleMap.p2()));
}
}
const int start = scaleMap.transform(sc_engine->axisBreakLeft());
const int end = scaleMap.transform(sc_engine->axisBreakRight());
int lb = start, rb = end;
if (sc_engine->testAttribute(QwtScaleEngine::Inverted)){
lb = end;
rb = start;
}
const int bw = painter->pen().width();
const int bw2 = bw / 2;
const int len = length() - 1;
int aux;
switch(alignment())
{
case LeftScale:
aux = pos.x() - bw2;
QwtPainter::drawLine(painter, aux, pos.y(), aux, rb);
QwtPainter::drawLine(painter, aux, lb + bw, aux, pos.y() + len);
break;
case RightScale:
aux = pos.x() + bw2;
QwtPainter::drawLine(painter, aux, pos.y(), aux, rb - bw - 1);
QwtPainter::drawLine(painter, aux, lb - bw2, aux, pos.y() + len);
break;
case TopScale:
aux = pos.y() - bw2;
QwtPainter::drawLine(painter, pos.x(), aux, lb - bw2, aux);
QwtPainter::drawLine(painter, rb + bw, aux, pos.x() + len, aux);
break;
case BottomScale:
aux = pos.y() + bw2;
QwtPainter::drawLine(painter, pos.x(), aux, lb - bw, aux);
QwtPainter::drawLine(painter, rb, aux, pos.x() + len, aux);
break;
}
//}
}
void ScaleDraw::drawInwardTick(QPainter *painter, double value, int len) const
{
ScaleEngine *sc_engine = (ScaleEngine *)d_plot->axisScaleEngine(axis());
if (sc_engine->hasBreak() && (sc_engine->axisBreakLeft() <= value && sc_engine->axisBreakRight() >= value))
return;
int pw2 = qwtMin((int)painter->pen().width(), len) / 2;
QwtScaleMap scaleMap = map();
const QwtMetricsMap metricsMap = QwtPainter::metricsMap();
QPoint pos = this->pos();
int majLen = tickLength(QwtScaleDiv::MajorTick);
if ( !metricsMap.isIdentity() ){
/*
The perfect position of the ticks is important.
To avoid rounding errors we have to use
device coordinates.
*/
QwtPainter::resetMetricsMap();
pos = metricsMap.layoutToDevice(pos);
if ( orientation() == Qt::Vertical ){
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceY((int)scaleMap.p1()),
metricsMap.layoutToDeviceY((int)scaleMap.p2())
);
len = metricsMap.layoutToDeviceX(len);
majLen = metricsMap.layoutToDeviceX(majLen);
} else {
scaleMap.setPaintInterval(
metricsMap.layoutToDeviceX((int)scaleMap.p1()),
metricsMap.layoutToDeviceX((int)scaleMap.p2())
);
len = metricsMap.layoutToDeviceY(len);
majLen = metricsMap.layoutToDeviceY(majLen);
}
}
const int clw = d_plot->canvasLineWidth();
const int tval = scaleMap.transform(value);
bool draw = false;
if ( orientation() == Qt::Vertical ){
int low = (int)scaleMap.p2() + majLen;
int high = (int)scaleMap.p1() - majLen;
if ((tval > low && tval < high) ||
(tval > high && !d_plot->axisEnabled (QwtPlot::xBottom) && !clw) ||
(tval < low && !d_plot->axisEnabled(QwtPlot::xTop) && !clw)) draw = true;
} else {
int low = (int)scaleMap.p1() + majLen;
int high = (int)scaleMap.p2() - majLen;
if ((tval > low && tval < high) ||
(tval > high && !d_plot->axisEnabled(QwtPlot::yRight) && !clw) ||
(tval < low && !d_plot->axisEnabled(QwtPlot::yLeft) && !clw)) draw = true;
}
if (draw){
switch(alignment()){
case LeftScale:
{
QwtPainter::drawLine(painter, pos.x() + pw2, tval, pos.x() + len, tval);
break;
}
case RightScale:
{
QwtPainter::drawLine(painter, pos.x() - pw2, tval, pos.x() - len, tval);
break;
}
case BottomScale:
{
QwtPainter::drawLine(painter, tval, pos.y() - pw2, tval, pos.y() - len);
break;
}
case TopScale:
{
QwtPainter::drawLine(painter, tval, pos.y() + pw2, tval, pos.y() + len);
break;
}
}
}
QwtPainter::setMetricsMap(metricsMap); // restore metrics map
}
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();
}
