static void rangef_func(const RangeF& rangef) {
CHECK(rangef == RangeF(.5,1.5));
}
void GraphView::redraw(const QSizeF &size)
{
QRectF r;
QSizeF mx, my;
RangeF rx, ry;
qreal sx, sy;
if (_visible.isEmpty() || _bounds.isNull()) {
removeItem(_xAxis);
removeItem(_yAxis);
removeItem(_slider);
removeItem(_info);
removeItem(_grid);
_scene->setSceneRect(QRectF());
return;
}
addItem(_xAxis);
addItem(_yAxis);
addItem(_slider);
addItem(_info);
addItem(_grid);
rx = RangeF(bounds().left() * _xScale, bounds().right() * _xScale);
ry = RangeF(bounds().top() * _yScale + _yOffset, bounds().bottom() * _yScale
+ _yOffset);
if (ry.size() < _minYRange)
ry.resize(_minYRange);
_xAxis->setRange(rx);
_yAxis->setRange(ry);
mx = _xAxis->margin();
my = _yAxis->margin();
r = _bounds;
if (r.height() < _minYRange)
r.adjust(0, -(_minYRange/2 - r.height()/2), 0,
_minYRange/2 - r.height()/2);
sx = (size.width() - (my.width() + mx.width())) / r.width();
sy = (size.height() - (mx.height() + my.height())
- _info->boundingRect().height()) / r.height();
for (int i = 0; i < _visible.size(); i++)
_visible.at(i)->setScale(sx, sy);
QPointF p(r.left() * sx, r.top() * sy);
QSizeF s(r.width() * sx, r.height() * sy);
r = QRectF(p, s);
if (r.height() < _minYRange * sy)
r.adjust(0, -(_minYRange/2 * sy - r.height()/2), 0,
(_minYRange/2) * sy - r.height()/2);
_xAxis->setSize(r.width());
_yAxis->setSize(r.height());
_xAxis->setPos(r.bottomLeft());
_yAxis->setPos(r.bottomLeft());
_grid->setSize(r.size());
_grid->setTicks(_xAxis->ticks(), _yAxis->ticks());
_grid->setPos(r.bottomLeft());
_slider->setArea(r);
updateSliderPosition();
r |= _xAxis->sceneBoundingRect();
r |= _yAxis->sceneBoundingRect();
_info->setPos(r.topLeft() + QPointF(r.width()/2
- _info->boundingRect().width()/2, -_info->boundingRect().height()));
_scene->setSceneRect(_scene->itemsBoundingRect());
}
