using pv::data::Segment;
using pv::util::format_time;
using pv::util::TimeUnit;
+using pv::util::Timestamp;
using std::deque;
using std::dynamic_pointer_cast;
namespace pv {
namespace view {
-const double View::MaxScale = 1e9;
-const double View::MinScale = 1e-15;
+const Timestamp View::MaxScale("1e9");
+const Timestamp View::MinScale("1e-12");
const int View::MaxScrollValue = INT_MAX / 2;
const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
always_zoom_to_fit_(false),
tick_period_(0.0),
- tick_prefix_(0),
- time_unit_(util::Time),
+ tick_prefix_(pv::util::SIPrefix::yocto),
+ tick_precision_(0),
+ time_unit_(util::TimeUnit::Time),
show_cursors_(false),
cursors_(new CursorPair(*this)),
next_flag_text_('A'),
return scale_;
}
-double View::offset() const
+void View::set_scale(double scale)
+{
+ if (scale_ != scale) {
+ scale_ = scale;
+ Q_EMIT scale_changed();
+ }
+}
+
+const Timestamp& View::offset() const
{
return offset_;
}
+void View::set_offset(const pv::util::Timestamp& offset)
+{
+ if (offset_ != offset) {
+ offset_ = offset;
+ Q_EMIT offset_changed();
+ }
+}
+
int View::owner_visual_v_offset() const
{
return -verticalScrollBar()->sliderPosition();
return 0;
}
-unsigned int View::tick_prefix() const
+pv::util::SIPrefix View::tick_prefix() const
{
return tick_prefix_;
}
+void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
+{
+ if (tick_prefix_ != tick_prefix) {
+ tick_prefix_ = tick_prefix;
+ Q_EMIT tick_prefix_changed();
+ }
+}
+
+unsigned int View::tick_precision() const
+{
+ return tick_precision_;
+}
+
+void View::set_tick_precision(unsigned tick_precision)
+{
+ if (tick_precision_ != tick_precision) {
+ tick_precision_ = tick_precision;
+ Q_EMIT tick_precision_changed();
+ }
+}
+
double View::tick_period() const
{
return tick_period_;
}
+void View::set_tick_period(double tick_period)
+{
+ if (tick_period_ != tick_period) {
+ tick_period_ = tick_period;
+ Q_EMIT tick_period_changed();
+ }
+}
+
TimeUnit View::time_unit() const
{
return time_unit_;
}
+void View::set_time_unit(pv::util::TimeUnit time_unit)
+{
+ if (time_unit_ != time_unit) {
+ time_unit_ = time_unit;
+ Q_EMIT time_unit_changed();
+ }
+}
+
void View::zoom(double steps)
{
zoom(steps, viewport_->width() / 2);
always_zoom_to_fit_changed(gui_state);
}
- const pair<double, double> extents = get_time_extents();
- const double delta = extents.second - extents.first;
- if (delta < 1e-12)
+ const pair<Timestamp, Timestamp> extents = get_time_extents();
+ const Timestamp delta = extents.second - extents.first;
+ if (delta < Timestamp("1e-12"))
return;
assert(viewport_);
if (w <= 0)
return;
- const double scale = max(min(delta / w, MaxScale), MinScale);
- set_scale_offset(scale, extents.first);
+ const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
+ set_scale_offset(scale.convert_to<double>(), extents.first);
}
void View::zoom_one_to_one()
set_zoom(1.0 / samplerate, w / 2);
}
-void View::set_scale_offset(double scale, double offset)
+void View::set_scale_offset(double scale, const Timestamp& offset)
{
// Disable sticky scrolling / always zoom to fit when acquisition runs
// and user drags the viewport
}
}
- scale_ = scale;
- offset_ = offset;
+ set_scale(scale);
+ set_offset(offset);
calculate_tick_spacing();
update_scroll();
ruler_->update();
viewport_->update();
- scale_offset_changed();
}
set< shared_ptr<SignalData> > View::get_visible_data() const
return visible_data;
}
-pair<double, double> View::get_time_extents() const
+pair<Timestamp, Timestamp> View::get_time_extents() const
{
- double left_time = DBL_MAX, right_time = DBL_MIN;
+ boost::optional<Timestamp> left_time, right_time;
const set< shared_ptr<SignalData> > visible_data = get_visible_data();
for (const shared_ptr<SignalData> d : visible_data)
{
double samplerate = s->samplerate();
samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
- const double start_time = s->start_time();
- left_time = min(left_time, start_time);
- right_time = max(right_time, start_time +
- d->max_sample_count() / samplerate);
+ const Timestamp start_time = s->start_time();
+ left_time = left_time ?
+ min(*left_time, start_time) :
+ start_time;
+ right_time = right_time ?
+ max(*right_time, start_time + d->max_sample_count() / samplerate) :
+ start_time + d->max_sample_count() / samplerate;
}
}
- if (left_time == DBL_MAX && right_time == DBL_MIN)
- return make_pair(0.0, 0.0);
+ if (!left_time || !right_time)
+ return make_pair(0, 0);
- assert(left_time < right_time);
- return make_pair(left_time, right_time);
+ assert(*left_time < *right_time);
+ return make_pair(*left_time, *right_time);
}
void View::enable_sticky_scrolling(bool state)
return cursors_;
}
-void View::add_flag(double time)
+void View::add_flag(const Timestamp& time)
{
flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
QString("%1").arg(next_flag_text_))));
r->animate_to_layout_v_offset();
}
-void View::get_scroll_layout(double &length, double &offset) const
+void View::get_scroll_layout(double &length, Timestamp &offset) const
{
- const pair<double, double> extents = get_time_extents();
- length = (extents.second - extents.first) / scale_;
+ const pair<Timestamp, Timestamp> extents = get_time_extents();
+ length = ((extents.second - extents.first) / scale_).convert_to<double>();
offset = offset_ / scale_;
}
always_zoom_to_fit_ = false;
always_zoom_to_fit_changed(false);
- const double cursor_offset = offset_ + scale_ * offset;
- const double new_scale = max(min(scale, MaxScale), MinScale);
- const double new_offset = cursor_offset - new_scale * offset;
- set_scale_offset(new_scale, new_offset);
+ const Timestamp cursor_offset = offset_ + scale_ * offset;
+ const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
+ const Timestamp new_offset = cursor_offset - new_scale * offset;
+ set_scale_offset(new_scale.convert_to<double>(), new_offset);
}
void View::calculate_tick_spacing()
{
- const double SpacingIncrement = 32.0f;
- const double MinValueSpacing = 32.0f;
+ const double SpacingIncrement = 10.0f;
+ const double MinValueSpacing = 40.0f;
- double min_width = SpacingIncrement, typical_width;
+ // Figure out the highest numeric value visible on a label
+ const QSize areaSize = viewport_->size();
+ const Timestamp max_time = max(fabs(offset_),
+ fabs(offset_ + scale_ * areaSize.width()));
+
+ double min_width = SpacingIncrement;
+ double label_width, tick_period_width;
QFontMetrics m(QApplication::font());
const int order = (int)floorf(log10f(min_period));
const double order_decimal = pow(10.0, order);
+ // Allow for a margin of error so that a scale unit of 1 can be used.
+ // Otherwise, for a SU of 1 the tick period will almost always be below
+ // the min_period by a small amount - and thus skipped in favor of 2.
+ // Note: margin assumes that SU[0] and SU[1] contain the smallest values
+ double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
+ double tp_with_margin;
unsigned int unit = 0;
do {
- tick_period_ = order_decimal * ScaleUnits[unit++];
- } while (tick_period_ < min_period &&
- unit < countof(ScaleUnits));
+ tp_with_margin = order_decimal * (ScaleUnits[unit++] + tp_margin);
+ } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
+
+ set_tick_period(order_decimal * ScaleUnits[unit - 1]);
+ set_tick_prefix(static_cast<pv::util::SIPrefix>(
+ (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3));
+
+ // Precision is the number of fractional digits required, not
+ // taking the prefix into account (and it must never be negative)
+ set_tick_precision(std::max((int)ceil(log10f(1 / tick_period_)), 0));
- tick_prefix_ = (order - pv::util::FirstSIPrefixPower) / 3;
+ tick_period_width = tick_period_ / scale_;
- typical_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
- Qt::AlignLeft | Qt::AlignTop,
- format_time(offset_, tick_prefix_, time_unit_)).width() +
+ const QString label_text =
+ format_time(max_time, tick_prefix_, time_unit_, tick_precision_);
+
+ label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
+ Qt::AlignLeft | Qt::AlignTop, label_text).width() +
MinValueSpacing;
min_width += SpacingIncrement;
- } while (typical_width > tick_period_ / scale_);
+ } while (tick_period_width < label_width);
}
void View::update_scroll()
const QSize areaSize = viewport_->size();
// Set the horizontal scroll bar
- double length = 0, offset = 0;
+ double length = 0;
+ Timestamp offset;
get_scroll_layout(length, offset);
length = max(length - areaSize.width(), 0.0);
if (length < MaxScrollValue) {
horizontalScrollBar()->setRange(0, length);
- horizontalScrollBar()->setSliderPosition(offset);
+ horizontalScrollBar()->setSliderPosition(offset.convert_to<double>());
} else {
horizontalScrollBar()->setRange(0, MaxScrollValue);
horizontalScrollBar()->setSliderPosition(
- offset_ * MaxScrollValue / (scale_ * length));
+ (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
}
updating_scroll_ = false;
void View::determine_time_unit()
{
// Check whether we know the sample rate and hence can use time as the unit
- if (time_unit_ == util::Samples) {
+ if (time_unit_ == util::TimeUnit::Samples) {
shared_lock<shared_mutex> lock(session().signals_mutex());
const unordered_set< shared_ptr<Signal> > &sigs(session().signals());
const vector< shared_ptr<Segment> > segments = data->segments();
if (!segments.empty())
if (segments[0]->samplerate()) {
- time_unit_ = util::Time;
+ set_time_unit(util::TimeUnit::Time);
break;
}
}
const int range = horizontalScrollBar()->maximum();
if (range < MaxScrollValue)
- offset_ = scale_ * value;
+ set_offset(scale_ * value);
else {
- double length = 0, offset;
+ double length = 0;
+ Timestamp offset;
get_scroll_layout(length, offset);
- offset_ = scale_ * length * value / MaxScrollValue;
+ set_offset(scale_ * length * value / MaxScrollValue);
}
ruler_->update();
void View::capture_state_updated(int state)
{
- // Reset "always zoom to fit" when we change to the stopped state
- if (always_zoom_to_fit_ && (state == Session::Stopped)) {
- always_zoom_to_fit_ = false;
- always_zoom_to_fit_changed(false);
- }
-
if (state == Session::Running)
- time_unit_ = util::Samples;
+ set_time_unit(util::TimeUnit::Samples);
+
+ if (state == Session::Stopped) {
+ // After acquisition has stopped we need to re-calculate the ticks once
+ // as it's otherwise done when the user pans or zooms, which is too late
+ calculate_tick_spacing();
+
+ // Reset "always zoom to fit", the acquisition has stopped
+ if (always_zoom_to_fit_) {
+ always_zoom_to_fit_ = false;
+ always_zoom_to_fit_changed(false);
+ }
+ }
}
void View::data_updated()
if (sticky_scrolling_) {
// Make right side of the view sticky
- double length = 0, offset;
+ double length = 0;
+ Timestamp offset;
get_scroll_layout(length, offset);
const QSize areaSize = viewport_->size();
length = max(length - areaSize.width(), 0.0);
- offset_ = scale_ * length;
+ set_offset(scale_ * length);
}
determine_time_unit();
projects / pulseview.git / blobdiff