From: Soeren Apel Date: Fri, 21 Jun 2019 20:53:17 +0000 (+0200) Subject: Fixes X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=66279897e318a2549557054d1204c862f7d99469;p=pulseview.git Fixes --- diff --git a/pv/util.cpp b/pv/util.cpp index 237ca7f0..9a9a5065 100644 --- a/pv/util.cpp +++ b/pv/util.cpp @@ -139,8 +139,7 @@ QString format_time_si(const Timestamp& v, SIPrefix prefix, if (sign && !v.is_zero()) ts << forcesign; ts << qSetRealNumberPrecision(precision) << (v * multiplier); - if (!unit.isNull()) - ts << ' ' << prefix << unit; + ts << ' ' << prefix << unit; return s; } @@ -162,6 +161,10 @@ QString format_value_si(double v, SIPrefix prefix, unsigned precision, exp -= 3; } } + + const int prefix_order = -exponent(prefix); + precision = (prefix >= SIPrefix::none) ? max((int)(precision + prefix_order), 0) : + max((int)(precision - prefix_order), 0); } assert(prefix >= SIPrefix::yocto); diff --git a/pv/util.hpp b/pv/util.hpp index dd7be222..e1640c4a 100644 --- a/pv/util.hpp +++ b/pv/util.hpp @@ -38,6 +38,7 @@ namespace pv { namespace util { enum class TimeUnit { + None = 0, Time = 1, Samples = 2 }; diff --git a/pv/views/trace/cursorpair.cpp b/pv/views/trace/cursorpair.cpp index 562584c2..b940090a 100644 --- a/pv/views/trace/cursorpair.cpp +++ b/pv/views/trace/cursorpair.cpp @@ -133,9 +133,9 @@ void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover) const int radius = delta_rect.height() / 2; QRectF text_rect(delta_rect.intersected(rect).adjusted(radius, 0, -radius, 0)); - QString text = format_string(text_rect.width(), [&p](const QString& s) -> qreal { - return p.boundingRect(QRectF(), 0, s).width(); - }); + QString text = format_string(text_rect.width(), + [&p](const QString& s) -> double { return p.boundingRect(QRectF(), 0, s).width(); }); + text_size_ = p.boundingRect(QRectF(), 0, text).size(); if (selected()) { @@ -173,49 +173,47 @@ void CursorPair::paint_back(QPainter &p, ViewItemPaintParams &pp) p.drawRect(l, pp.top(), r - l, pp.height()); } -QString CursorPair::format_string(qreal max_width, std::function query_size) +QString CursorPair::format_string(int max_width, std::function query_size) { - constexpr int time_precision = 12; - constexpr int freq_precision = 4; - - const pv::util::SIPrefix prefix = view_.tick_prefix(); - const pv::util::Timestamp diff = abs(second_->time() - first_->time()); + int time_precision = 12; + int freq_precision = 12; - const QString time = Ruler::format_time_with_distance( - diff, diff, prefix, view_.time_unit(), time_precision, false); - const QString freq = util::format_time_si( - 1 / diff, pv::util::SIPrefix::unspecified, freq_precision, "Hz", false); - const QString out = QString("%1 / %2").arg(time, freq); + QString s = format_string_sub(time_precision, freq_precision); - // Try full "{time} ms / {freq} Hz" format - if (max_width <= 0 || query_size(out) <= max_width) { + // Try full "{time} s / {freq} Hz" format + if ((max_width <= 0) || (query_size(s) <= max_width)) { label_incomplete_ = false; - return out; + return s; } label_incomplete_ = true; - // Try just "{time}ms" format and gradually reduce time precision down to zero - for (int shrinkage=0; shrinkage <= time_precision; shrinkage++) { - int prec = time_precision - shrinkage ; + // Gradually reduce time precision to match frequency precision + while (time_precision > freq_precision) { + time_precision--; + + s = format_string_sub(time_precision, freq_precision); + if (query_size(s) <= max_width) + return s; + } - const QString time = Ruler::format_time_with_distance( - diff, diff, prefix, view_.time_unit(), - prec, false); + // Gradually reduce both precisions down to zero + while (time_precision > 0) { + time_precision--; + freq_precision--; - if (query_size(time) <= max_width) - return time; + s = format_string_sub(time_precision, freq_precision); + if (query_size(s) <= max_width) + return s; } - // Try no trailing digits and drop the unit to at least display something. The unit should be obvious from the ruler - // anyway. - const QString bare_number = Ruler::format_time_with_distance( - diff, diff, prefix, view_.time_unit(), - 0, false, false); - if (query_size(bare_number) <= max_width) - return bare_number; + // Try no trailing digits and drop the unit to at least display something + s = format_string_sub(0, 0, false); + + if (query_size(s) <= max_width) + return s; - // Give up. + // Give up return "..."; } @@ -247,6 +245,27 @@ void CursorPair::on_hover_point_changed(const QWidget* widget, const QPoint& hp) QToolTip::hideText(); // TODO Will break other tooltips when there can be others } +QString CursorPair::format_string_sub(int time_precision, int freq_precision, bool show_unit) +{ + const pv::util::SIPrefix prefix = view_.tick_prefix(); + const pv::util::Timestamp diff = abs(second_->time() - first_->time()); + + const QString time = Ruler::format_time_with_distance( + diff, diff, prefix, (show_unit ? view_.time_unit() : pv::util::TimeUnit::None), + time_precision, false); + + // We can only show a frequency when there's a time base + if (view_.time_unit() == pv::util::TimeUnit::Time) { + const QString freq = util::format_value_si( + 1 / diff.convert_to(), pv::util::SIPrefix::unspecified, + freq_precision, (show_unit ? "Hz" : nullptr), false); + + return QString("%1 / %2").arg(time, freq); + } else + // In this case, we return the number of samples, really + return time; +} + } // namespace trace } // namespace views } // namespace pv diff --git a/pv/views/trace/cursorpair.hpp b/pv/views/trace/cursorpair.hpp index 1dc66a32..f506c230 100644 --- a/pv/views/trace/cursorpair.hpp +++ b/pv/views/trace/cursorpair.hpp @@ -102,8 +102,8 @@ public: /** * Constructs the string to display. */ - QString format_string(qreal max_width = 0, std::function query_size - = [](const QString& s) -> qreal { Q_UNUSED(s); return 0; }); + QString format_string(int max_width = 0, std::function query_size + = [](const QString& s) -> double { (void)s; return 0; }); pair get_cursor_offsets() const; @@ -112,6 +112,9 @@ public: public Q_SLOTS: void on_hover_point_changed(const QWidget* widget, const QPoint &hp); +private: + QString format_string_sub(int time_precision, int freq_precision, bool show_unit = true); + private: shared_ptr first_, second_; QColor fill_color_; diff --git a/pv/views/trace/ruler.cpp b/pv/views/trace/ruler.cpp index 98f55ddb..401fc3da 100644 --- a/pv/views/trace/ruler.cpp +++ b/pv/views/trace/ruler.cpp @@ -88,8 +88,7 @@ QString Ruler::format_time_with_distance( pv::util::SIPrefix prefix, pv::util::TimeUnit unit, unsigned precision, - bool sign, - bool show_unit) + bool sign) { const unsigned limit = 60; @@ -98,7 +97,12 @@ QString Ruler::format_time_with_distance( // If we have to use samples then we have no alternative formats if (unit == pv::util::TimeUnit::Samples) - return pv::util::format_time_si_adjusted(t, prefix, precision, show_unit ? "sa" : NULL, sign); + return pv::util::format_time_si_adjusted(t, prefix, precision, "sa", sign); + + QString unit_string; + if (unit == pv::util::TimeUnit::Time) + unit_string = "s"; + // Note: In case of pv::util::TimeUnit::None, unit_string remains empty // View zoomed way out -> low precision (0), big distance (>=60s) // -> DD:HH:MM @@ -110,7 +114,7 @@ QString Ruler::format_time_with_distance( // View zoomed way in -> high precision (>3), low step size (<1s) // -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds if (abs(t) < limit) - return pv::util::format_time_si_adjusted(t, prefix, precision, show_unit ? "s" : NULL, sign); + return pv::util::format_time_si_adjusted(t, prefix, precision, unit_string, sign); else return pv::util::format_time_minutes(t, precision, sign); } diff --git a/pv/views/trace/ruler.hpp b/pv/views/trace/ruler.hpp index 3a9fea91..5035bfc8 100644 --- a/pv/views/trace/ruler.hpp +++ b/pv/views/trace/ruler.hpp @@ -115,8 +115,7 @@ public: pv::util::SIPrefix prefix = pv::util::SIPrefix::unspecified, pv::util::TimeUnit unit = pv::util::TimeUnit::Time, unsigned precision = 0, - bool sign = true, - bool show_unit = true); + bool sign = true); pv::util::Timestamp get_absolute_time_from_x_pos(uint32_t x) const; pv::util::Timestamp get_ruler_time_from_x_pos(uint32_t x) const;