+void View::zoom_fit()
+{
+ using pv::data::SignalData;
+
+ const vector< shared_ptr<Signal> > sigs(
+ session().get_signals());
+
+ // Make a set of all the visible data objects
+ set< shared_ptr<SignalData> > visible_data;
+ BOOST_FOREACH(const shared_ptr<Signal> sig, sigs)
+ if (sig->enabled())
+ visible_data.insert(sig->data());
+
+ if (visible_data.empty())
+ return;
+
+ double left_time = DBL_MAX, right_time = DBL_MIN;
+ BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data)
+ {
+ const double start_time = d->get_start_time();
+ left_time = min(left_time, start_time);
+ right_time = max(right_time, start_time +
+ d->get_max_sample_count() / d->samplerate());
+ }
+
+ assert(left_time < right_time);
+ if (right_time - left_time < 1e-12)
+ return;
+
+ assert(_viewport);
+ const int w = _viewport->width();
+ if (w <= 0)
+ return;
+
+ set_scale_offset((right_time - left_time) / w, left_time);