X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fruler.cpp;h=9e639383942ed1149702f9e369b16452a46eba1f;hp=743a11fcb9e5e3e40afdfb782adbad7e85eb8708;hb=64b678ba0bf16e3a3c1aceffef170f3dbcc588d3;hpb=1b5813fe7a82d959976389f7bb41bf731f1ff435 diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp index 743a11fc..9e639383 100644 --- a/pv/view/ruler.cpp +++ b/pv/view/ruler.cpp @@ -1,5 +1,5 @@ /* - * This file is part of the sigrok project. + * This file is part of the PulseView project. * * Copyright (C) 2012 Joel Holdsworth * @@ -19,16 +19,23 @@ */ #include "ruler.h" + +#include "cursor.h" #include "view.h" +#include "viewport.h" -#include "../../extdef.h" +#include #include #include +#include +#include #include #include +using namespace std; + namespace pv { namespace view { @@ -39,42 +46,81 @@ const QString Ruler::SIPrefixes[9] = {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"}; const int Ruler::FirstSIPrefixPower = -15; +const int Ruler::HoverArrowSize = 5; + Ruler::Ruler(View &parent) : QWidget(&parent), - _view(parent) + _view(parent), + _grabbed_marker(NULL) { + setMouseTracking(true); + + connect(&_view, SIGNAL(hover_point_changed()), + this, SLOT(hover_point_changed())); } -void Ruler::paintEvent(QPaintEvent *event) +QString Ruler::format_time(double t, unsigned int prefix, + unsigned int precision) { - QPainter p(this); + 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 double MinSpacing = 80; +void Ruler::paintEvent(QPaintEvent*) +{ + using namespace Qt; - const double min_period = _view.scale() * MinSpacing; + const double SpacingIncrement = 32.0f; + const double MinValueSpacing = 32.0f; + const int ValueMargin = 3; - const int order = (int)floorf(log10f(min_period)); - const double order_decimal = pow(10, order); + QPainter p(this); + p.setRenderHint(QPainter::Antialiasing); - int unit = 0; - double tick_period = 0.0f; + 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 { - tick_period = order_decimal * ScaleUnits[unit++]; - } while(tick_period < min_period && unit < countof(ScaleUnits)); + 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; + + do + { + tick_period = order_decimal * ScaleUnits[unit++]; + } while (tick_period < min_period && unit < countof(ScaleUnits)); + + prefix = (order - FirstSIPrefixPower) / 3; + assert(prefix < countof(SIPrefixes)); - const int prefix = (order - FirstSIPrefixPower) / 3; - assert(prefix >= 0); - assert(prefix < countof(SIPrefixes)); - const double multiplier = pow(0.1, prefix * 3 + FirstSIPrefixPower); + typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX, + AlignLeft | AlignTop, format_time(_view.offset(), + prefix)).width() + MinValueSpacing; + + min_width += SpacingIncrement; + + } while(typical_width > tick_period / _view.scale()); const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX, - Qt::AlignLeft | Qt::AlignTop, "8").height(); + AlignLeft | AlignTop, "8").height(); // Draw the tick marks - p.setPen(Qt::black); + p.setPen(palette().color(foregroundRole())); const double minor_tick_period = tick_period / MinorTickSubdivision; const double first_major_division = @@ -84,37 +130,113 @@ void Ruler::paintEvent(QPaintEvent *event) const double t0 = first_major_division * tick_period; int division = (int)round(first_minor_division - - first_major_division * MinorTickSubdivision); - while(1) - { - const double t = t0 + division * minor_tick_period; - const double x = (t - _view.offset()) / _view.scale(); + first_major_division * MinorTickSubdivision) - 1; + + 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; + + double x; - if(x >= width()) - break; + do { + const double t = t0 + division * minor_tick_period; + x = (t - _view.offset()) / _view.scale(); - if(division % MinorTickSubdivision == 0) + if (division % MinorTickSubdivision == 0) { // Draw a major tick - QString s; - QTextStream ts(&s); - ts << (t * multiplier) << SIPrefixes[prefix] << "s"; - p.drawText(x, 0, 0, text_height, Qt::AlignCenter | - Qt::AlignTop | Qt::TextDontClip, s); - p.drawLine(x, text_height, x, height()); + 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(x, (text_height + height()) / 2, - x, height()); + p.drawLine(QPointF(x, minor_tick_y1), + QPointF(x, tick_y2)); } division++; - } + + } while (x < width()); + + // Draw the cursors + draw_cursors(p, prefix); + + // Draw the hover mark + draw_hover_mark(p); p.end(); } +void Ruler::mouseMoveEvent(QMouseEvent *e) +{ + if (!_grabbed_marker) + return; + + _grabbed_marker->set_time(_view.offset() + + ((double)e->x() + 0.5) * _view.scale()); +} + +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; + } + } +} + +void Ruler::mouseReleaseEvent(QMouseEvent *) +{ + _grabbed_marker = NULL; +} + +void Ruler::draw_cursors(QPainter &p, unsigned int prefix) +{ + 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); +} + +void Ruler::draw_hover_mark(QPainter &p) +{ + const int x = _view.hover_point().x(); + + if (x == -1 || _grabbed_marker) + return; + + p.setPen(QPen(Qt::NoPen)); + p.setBrush(QBrush(palette().color(foregroundRole()))); + + const int b = height() - 1; + const QPointF points[] = { + QPointF(x, b), + QPointF(x - HoverArrowSize, b - HoverArrowSize), + QPointF(x + HoverArrowSize, b - HoverArrowSize) + }; + p.drawPolygon(points, countof(points)); +} + +void Ruler::hover_point_changed() +{ + update(); +} + } // namespace view } // namespace pv