void XYScale::rescale() {
KSL_PUBLIC(XYScale);
if (m->itemList.isEmpty()) {
setXrange(-1.0, 1.0);
setYrange(-1.0, 1.0);
return;
}
auto iter = m->itemList.begin();
auto end = m->itemList.end();
FigureItem *item = *iter++;
bool firstRescalable = item->rescalable();
while (!item->rescalable() && iter != end) {
item = *iter++;
if (item->rescalable())
firstRescalable = true;
}
if (!firstRescalable)
return;
auto itemRect = item->dataRect();
setXrange(itemRect.left(), itemRect.right());
setYrange(itemRect.top(), itemRect.bottom());
while (iter != end) {
item = *iter++;
if (item->rescalable()) {
itemRect = item->dataRect();
if (itemRect.left() < m->xMin) m->xMin = itemRect.left();
if (itemRect.right() > m->xMax) m->xMax = itemRect.right();
if (itemRect.top() < m->yMin) m->yMin = itemRect.top();
if (itemRect.bottom() > m->yMax) m->yMax = itemRect.bottom();
}
}
m->width = m->xMax - m->xMin;
double bound = m->width / 20.0;
m->xMin -= bound;
m->xMax += bound;
m->width += 2.0 * bound;
m->height = m->yMax - m->yMin;
bound = m->height / 20.0;
m->yMin -= bound;
m->yMax += bound;
m->height += 2.0 * bound;
}
void QSLPlotArea::addPlotable(QSLPlotable *plt)
{
if (mPlots.size() == 0) {
mXminData = plt->xMin();
mXmaxData = plt->xMax();
mYminData = plt->yMin();
mYmaxData = plt->yMax();
} else {
if (plt->xMin() < mXminData) mXminData = plt->xMin();
if (plt->xMax() > mXmaxData) mXmaxData = plt->xMax();
if (plt->yMin() < mYminData) mYminData = plt->yMin();
if (plt->yMax() > mYmaxData) mYmaxData = plt->yMax();
}
QObject::connect(plt, SIGNAL(appearenceChanged()), this, SLOT(repaint()));
QObject::connect(plt, SIGNAL(dataChanged()), this, SLOT(replot()));
QObject::connect(plt, SIGNAL(rangesChanged()), this, SLOT(rescale()));
plt->mParentPlot = this;
mPlots.append(plt);
setXrange(mXminData,mXmaxData);
setYrange(mYminData,mYmaxData);
emit plotsChanged();
}
QSLPlotArea::QSLPlotArea(QWidget *parent)
: QWidget(parent)
, mXlowerBound(20)
, mXupperBound(20)
, mYlowerBound(20)
, mYupperBound(20)
{
setXrange(0,1);
setYrange(0,1);
setBackColor(Qt::white);
setAutoFillBackground(true);
setMinimumSize(600,400);
QObject::connect(this, SIGNAL(appearenceChanged()), this, SLOT(repaint()));
QObject::connect(this, SIGNAL(plotsChanged()), this, SLOT(replot()));
}
void XYScale::trackRect(const QRectF &rect) {
setXrange(rect.left(), rect.right());
setYrange(rect.top(), rect.bottom());
}
