X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fruler.cpp;h=f6ec4ac78d7d142a486d2347287bd4693816ca5c;hp=adab57dbed21344dab3cf39a072492a40950e82f;hb=d9ea96280ab1128427143660ae375c30b19aa0cb;hpb=3a6fe0818affcb40b2821eab3f633e536377dd81 diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp index adab57db..f6ec4ac7 100644 --- a/pv/view/ruler.cpp +++ b/pv/view/ruler.cpp @@ -18,226 +18,258 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#include "ruler.h" - -#include "cursor.h" -#include "view.h" -#include "viewport.h" - #include -#include -#include -#include - +#include +#include #include -#include -#include -using namespace std; +#include "ruler.hpp" +#include "view.hpp" + +using namespace Qt; + +using std::shared_ptr; +using std::vector; namespace pv { namespace view { +const float Ruler::RulerHeight = 2.5f; // x Text Height const int Ruler::MinorTickSubdivision = 4; -const int Ruler::ScaleUnits[3] = {1, 2, 5}; - -const QString Ruler::SIPrefixes[9] = - {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"}; -const int Ruler::FirstSIPrefixPower = -15; -const int Ruler::HoverArrowSize = 5; +const float Ruler::HoverArrowSize = 0.5f; // x Text Height Ruler::Ruler(View &parent) : - QWidget(&parent), - _view(parent), - _grabbed_marker(NULL) + MarginWidget(parent) { setMouseTracking(true); - connect(&_view, SIGNAL(hover_point_changed()), + connect(&view_, SIGNAL(hover_point_changed()), this, SLOT(hover_point_changed())); + connect(&view_, SIGNAL(offset_changed()), + this, SLOT(invalidate_tick_position_cache())); + connect(&view_, SIGNAL(scale_changed()), + this, SLOT(invalidate_tick_position_cache())); + connect(&view_, SIGNAL(tick_prefix_changed()), + this, SLOT(invalidate_tick_position_cache())); + connect(&view_, SIGNAL(tick_precision_changed()), + this, SLOT(invalidate_tick_position_cache())); + connect(&view_, SIGNAL(tick_period_changed()), + this, SLOT(invalidate_tick_position_cache())); + connect(&view_, SIGNAL(time_unit_changed()), + this, SLOT(invalidate_tick_position_cache())); } -QString Ruler::format_time(double t, unsigned int prefix, - unsigned int precision) +QSize Ruler::sizeHint() const { - const double multiplier = pow(10.0, - - prefix * 3 - FirstSIPrefixPower); - - QString s; - QTextStream ts(&s); - ts.setRealNumberPrecision(precision); - ts << fixed << forcesign << (t * multiplier) << - SIPrefixes[prefix] << "s"; - return s; + const int text_height = calculate_text_height(); + return QSize(0, RulerHeight * text_height); } -void Ruler::paintEvent(QPaintEvent*) +QSize Ruler::extended_size_hint() const { - using namespace Qt; - - const double SpacingIncrement = 32.0f; - const double MinValueSpacing = 32.0f; - const int ValueMargin = 3; - - QPainter p(this); - p.setRenderHint(QPainter::Antialiasing); - - double min_width = SpacingIncrement, typical_width; - double tick_period; - unsigned int prefix; - - // Find tick spacing, and number formatting that does not cause - // value to collide. - do - { - const double min_period = _view.scale() * min_width; - - const int order = (int)floorf(log10f(min_period)); - const double order_decimal = pow(10, order); - - unsigned int unit = 0; + QRectF max_rect; + std::vector< std::shared_ptr > items(view_.time_items()); + for (auto &i : items) + max_rect = max_rect.united(i->label_rect(QRect())); + return QSize(0, sizeHint().height() - max_rect.top() / 2 + + ViewItem::HighlightRadius); +} - do - { - tick_period = order_decimal * ScaleUnits[unit++]; - } while (tick_period < min_period && unit < countof(ScaleUnits)); +QString Ruler::format_time_with_distance( + const pv::util::Timestamp& distance, + const pv::util::Timestamp& t, + pv::util::SIPrefix prefix, + pv::util::TimeUnit unit, + unsigned precision, + bool sign) +{ + const unsigned limit = 60; + + if (t.is_zero()) + return "0"; + + // 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, "sa", sign); + + // View zoomed way out -> low precision (0), big distance (>=60s) + // -> DD:HH:MM + if ((precision == 0) && (distance >= limit)) + return pv::util::format_time_minutes(t, 0, sign); + + // View in "normal" range -> medium precision, medium step size + // -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds + // 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, "s", sign); + else + return pv::util::format_time_minutes(t, precision, sign); +} - prefix = (order - FirstSIPrefixPower) / 3; - assert(prefix < countof(SIPrefixes)); +vector< shared_ptr > Ruler::items() +{ + const vector< shared_ptr > time_items(view_.time_items()); + return vector< shared_ptr >( + time_items.begin(), time_items.end()); +} +shared_ptr Ruler::get_mouse_over_item(const QPoint &pt) +{ + const vector< shared_ptr > items(view_.time_items()); + for (auto i = items.rbegin(); i != items.rend(); i++) + if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt)) + return *i; + return nullptr; +} - typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX, - AlignLeft | AlignTop, format_time(_view.offset(), - prefix)).width() + MinValueSpacing; +void Ruler::paintEvent(QPaintEvent*) +{ + if (!tick_position_cache_) { + auto ffunc = [this](const pv::util::Timestamp& t) { + return format_time_with_distance( + this->view_.tick_period(), + t, + this->view_.tick_prefix(), + this->view_.time_unit(), + this->view_.tick_precision()); + }; + + tick_position_cache_ = calculate_tick_positions( + view_.tick_period(), + view_.offset(), + view_.scale(), + width(), + ffunc); + } - min_width += SpacingIncrement; + const int ValueMargin = 3; - } while(typical_width > tick_period / _view.scale()); + const int text_height = calculate_text_height(); + const int ruler_height = RulerHeight * text_height; + const int major_tick_y1 = text_height + ValueMargin * 2; + const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2; - const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX, - AlignLeft | AlignTop, "8").height(); + QPainter p(this); // Draw the tick marks p.setPen(palette().color(foregroundRole())); - const double minor_tick_period = tick_period / MinorTickSubdivision; - const double first_major_division = - floor(_view.offset() / tick_period); - const double first_minor_division = - ceil(_view.offset() / minor_tick_period); - const double t0 = first_major_division * tick_period; - - int division = (int)round(first_minor_division - - first_major_division * MinorTickSubdivision); - - const int major_tick_y1 = text_height + ValueMargin * 2; - const int tick_y2 = height(); - const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2; - - while (1) - { - const double t = t0 + division * minor_tick_period; - const double x = (t - _view.offset()) / _view.scale(); - - if (x >= width()) - break; - - if (division % MinorTickSubdivision == 0) - { - // Draw a major tick - p.drawText(x, ValueMargin, 0, text_height, - AlignCenter | AlignTop | TextDontClip, - format_time(t, prefix)); - p.drawLine(QPointF(x, major_tick_y1), - QPointF(x, tick_y2)); - } - else - { - // Draw a minor tick - p.drawLine(QPointF(x, minor_tick_y1), - QPointF(x, tick_y2)); - } - - division++; + for (const auto& tick: tick_position_cache_->major) { + p.drawText(tick.first, ValueMargin, 0, text_height, + AlignCenter | AlignTop | TextDontClip, tick.second); + p.drawLine(QPointF(tick.first, major_tick_y1), + QPointF(tick.first, ruler_height)); } - // Draw the cursors - draw_cursors(p, prefix); + for (const auto& tick: tick_position_cache_->minor) { + p.drawLine(QPointF(tick, minor_tick_y1), + QPointF(tick, ruler_height)); + } // Draw the hover mark - draw_hover_mark(p); + draw_hover_mark(p, text_height); + + p.setRenderHint(QPainter::Antialiasing); - p.end(); + // The cursor labels are not drawn with the arrows exactly on the + // bottom line of the widget, because then the selection shadow + // would be clipped away. + const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius); + + // Draw the items + const vector< shared_ptr > items(view_.time_items()); + for (auto &i : items) { + const bool highlight = !item_dragging_ && + i->label_rect(r).contains(mouse_point_); + i->paint_label(p, r, highlight); + } } -void Ruler::mouseMoveEvent(QMouseEvent *e) +Ruler::TickPositions Ruler::calculate_tick_positions( + const pv::util::Timestamp& major_period, + const pv::util::Timestamp& offset, + const double scale, + const int width, + std::function format_function) { - if (!_grabbed_marker) - return; + TickPositions tp; - _grabbed_marker->set_time(_view.offset() + - ((double)e->x() + 0.5) * _view.scale()); -} + const pv::util::Timestamp minor_period = major_period / MinorTickSubdivision; + const pv::util::Timestamp first_major_division = floor(offset / major_period); + const pv::util::Timestamp first_minor_division = ceil(offset / minor_period); + const pv::util::Timestamp t0 = first_major_division * major_period; -void Ruler::mousePressEvent(QMouseEvent *e) -{ - if (e->buttons() & Qt::LeftButton) { - _grabbed_marker = NULL; - - if (_view.cursors_shown()) { - std::pair &cursors = - _view.cursors(); - if (cursors.first.get_label_rect( - rect()).contains(e->pos())) - _grabbed_marker = &cursors.first; - else if (cursors.second.get_label_rect( - rect()).contains(e->pos())) - _grabbed_marker = &cursors.second; + int division = (round(first_minor_division - + first_major_division * MinorTickSubdivision)).convert_to() - 1; + + double x; + + do { + pv::util::Timestamp t = t0 + division * minor_period; + x = ((t - offset) / scale).convert_to(); + + if (division % MinorTickSubdivision == 0) { + // Recalculate 't' without using 'minor_period' which is a fraction + t = t0 + division / MinorTickSubdivision * major_period; + tp.major.emplace_back(x, format_function(t)); + } else { + tp.minor.emplace_back(x); } - } -} -void Ruler::mouseReleaseEvent(QMouseEvent *) -{ - _grabbed_marker = NULL; + division++; + } while (x < width); + + return tp; } -void Ruler::draw_cursors(QPainter &p, unsigned int prefix) +void Ruler::mouseDoubleClickEvent(QMouseEvent *event) { - if (!_view.cursors_shown()) - return; - - const QRect r = rect(); - pair &cursors = _view.cursors(); - cursors.first.paint_label(p, r, prefix); - cursors.second.paint_label(p, r, prefix); + view_.add_flag(view_.offset() + ((double)event->x() + 0.5) * view_.scale()); } -void Ruler::draw_hover_mark(QPainter &p) +void Ruler::draw_hover_mark(QPainter &p, int text_height) { - const int x = _view.hover_point().x(); + const int x = view_.hover_point().x(); - if (x == -1 || _grabbed_marker) + if (x == -1) return; p.setPen(QPen(Qt::NoPen)); - p.setBrush(QBrush(QColor(Qt::black))); + p.setBrush(QBrush(palette().color(foregroundRole()))); - const int b = height() - 1; + const int b = RulerHeight * text_height; + const float hover_arrow_size = HoverArrowSize * text_height; const QPointF points[] = { QPointF(x, b), - QPointF(x - HoverArrowSize, b - HoverArrowSize), - QPointF(x + HoverArrowSize, b - HoverArrowSize) + QPointF(x - hover_arrow_size, b - hover_arrow_size), + QPointF(x + hover_arrow_size, b - hover_arrow_size) }; p.drawPolygon(points, countof(points)); } +int Ruler::calculate_text_height() const +{ + return QFontMetrics(font()).ascent(); +} + void Ruler::hover_point_changed() { update(); } +void Ruler::invalidate_tick_position_cache() +{ + tick_position_cache_ = boost::none; +} + +void Ruler::resizeEvent(QResizeEvent*) +{ + // the tick calculation depends on the width of this widget + invalidate_tick_position_cache(); +} + } // namespace view } // namespace pv