You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.6 KiB
84 lines
2.6 KiB
#include "tools/cabana/chart/sparkline.h"
|
|
|
|
#include <limits>
|
|
#include <QPainter>
|
|
|
|
#include "tools/cabana/streams/abstractstream.h"
|
|
|
|
void Sparkline::update(const MessageId &msg_id, const cabana::Signal *sig, double last_msg_ts, int range, QSize size) {
|
|
const auto &msgs = can->events(msg_id);
|
|
uint64_t ts = (last_msg_ts + can->routeStartTime()) * 1e9;
|
|
uint64_t first_ts = (ts > range * 1e9) ? ts - range * 1e9 : 0;
|
|
auto first = std::lower_bound(msgs.cbegin(), msgs.cend(), first_ts, [](auto e, uint64_t ts) {
|
|
return e->mono_time < ts;
|
|
});
|
|
auto last = std::upper_bound(first, msgs.cend(), ts, [](uint64_t ts, auto e) {
|
|
return ts < e->mono_time;
|
|
});
|
|
|
|
bool update_values = last_ts != last_msg_ts || time_range != range;
|
|
last_ts = last_msg_ts;
|
|
time_range = range;
|
|
|
|
if (first != last) {
|
|
if (update_values) {
|
|
values.clear();
|
|
if (values.capacity() < std::distance(first, last)) {
|
|
values.reserve(std::distance(first, last) * 2);
|
|
}
|
|
min_val = std::numeric_limits<double>::max();
|
|
max_val = std::numeric_limits<double>::lowest();
|
|
for (auto it = first; it != last; ++it) {
|
|
const CanEvent *e = *it;
|
|
double value = 0;
|
|
if (sig->getValue(e->dat, e->size, &value)) {
|
|
values.emplace_back((e->mono_time - (*first)->mono_time) / 1e9, value);
|
|
if (min_val > value) min_val = value;
|
|
if (max_val < value) max_val = value;
|
|
}
|
|
}
|
|
if (min_val == max_val) {
|
|
min_val -= 1;
|
|
max_val += 1;
|
|
}
|
|
}
|
|
} else {
|
|
values.clear();
|
|
}
|
|
|
|
if (!values.empty()) {
|
|
render(sig->color, size);
|
|
} else {
|
|
pixmap = QPixmap();
|
|
min_val = -1;
|
|
max_val = 1;
|
|
}
|
|
}
|
|
|
|
void Sparkline::render(const QColor &color, QSize size) {
|
|
const double xscale = (size.width() - 1) / (double)time_range;
|
|
const double yscale = (size.height() - 3) / (max_val - min_val);
|
|
points.clear();
|
|
points.reserve(values.capacity());
|
|
for (auto &v : values) {
|
|
points.emplace_back(v.x() * xscale, 1 + std::abs(v.y() - max_val) * yscale);
|
|
}
|
|
|
|
qreal dpr = qApp->devicePixelRatio();
|
|
size *= dpr;
|
|
if (size != pixmap.size()) {
|
|
pixmap = QPixmap(size);
|
|
}
|
|
pixmap.setDevicePixelRatio(dpr);
|
|
pixmap.fill(Qt::transparent);
|
|
QPainter painter(&pixmap);
|
|
painter.setRenderHint(QPainter::Antialiasing, points.size() < 500);
|
|
painter.setPen(color);
|
|
painter.drawPolyline(points.data(), points.size());
|
|
painter.setPen(QPen(color, 3));
|
|
if ((points.back().x() - points.front().x()) / points.size() > 8) {
|
|
painter.drawPoints(points.data(), points.size());
|
|
} else {
|
|
painter.drawPoint(points.back());
|
|
}
|
|
}
|
|
|