X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=pv%2Fview%2Fdecodetrace.cpp;h=e290e55fe2ae68fa72c0f9cfefae29e371c5d72c;hb=c294543f8df3b3c90fa613c8198506aea68e91e7;hp=c8a20dc3c9c6cf7eb3888080351e624ba38349c7;hpb=6ac6242b25cfbd4df14abe7580adc9d0f4cffe43;p=pulseview.git diff --git a/pv/view/decodetrace.cpp b/pv/view/decodetrace.cpp index c8a20dc3..e290e55f 100644 --- a/pv/view/decodetrace.cpp +++ b/pv/view/decodetrace.cpp @@ -33,6 +33,7 @@ extern "C" { #include #include #include +#include #include "decodetrace.h" @@ -49,9 +50,11 @@ extern "C" { using std::dynamic_pointer_cast; using std::list; +using std::make_pair; using std::max; using std::map; using std::min; +using std::pair; using std::shared_ptr; using std::vector; @@ -116,6 +119,8 @@ DecodeTrace::DecodeTrace(pv::SigSession &session, decoder_stack->stack().front()->decoder()->name)), _session(session), _decoder_stack(decoder_stack), + _text_height(0), + _row_height(0), _delete_mapper(this), _show_hide_mapper(this) { @@ -157,37 +162,16 @@ void DecodeTrace::paint_mid(QPainter &p, int left, int right) { using namespace pv::data::decode; - const double scale = _view->scale(); - assert(scale > 0); - - double samplerate = _decoder_stack->samplerate(); - - _cur_row_headings.clear(); - - // Show sample rate as 1Hz when it is unknown - if (samplerate == 0.0) - samplerate = 1.0; - - const double pixels_offset = (_view->offset() - - _decoder_stack->get_start_time()) / scale; - const double samples_per_pixel = samplerate * scale; - - const uint64_t start_sample = (uint64_t)max((left + pixels_offset) * - samples_per_pixel, 0.0); - const uint64_t end_sample = (uint64_t)max((right + pixels_offset) * - samples_per_pixel, 0.0); - QFontMetrics m(QApplication::font()); - const int text_height = m.boundingRect(QRect(), 0, "Tg").height(); - const int annotation_height = (text_height * 5) / 4; - const int row_height = (text_height * 6) / 4; + _text_height = m.boundingRect(QRect(), 0, "Tg").height(); + _row_height = (_text_height * 6) / 4; + const int annotation_height = (_text_height * 5) / 4; assert(_decoder_stack); const QString err = _decoder_stack->error_message(); if (!err.isEmpty()) { - draw_unresolved_period(p, annotation_height, left, right, - samples_per_pixel, pixels_offset); + draw_unresolved_period(p, annotation_height, left, right); draw_error(p, err, left, right); return; } @@ -195,10 +179,12 @@ void DecodeTrace::paint_mid(QPainter &p, int left, int right) // Iterate through the rows assert(_view); int y = get_y(); + pair sample_range = get_sample_range(left, right); assert(_decoder_stack); - const vector rows(_decoder_stack->get_visible_rows()); + + _visible_rows.clear(); for (size_t i = 0; i < rows.size(); i++) { const Row &row = rows[i]; @@ -211,22 +197,20 @@ void DecodeTrace::paint_mid(QPainter &p, int left, int right) vector annotations; _decoder_stack->get_annotation_subset(annotations, row, - start_sample, end_sample); + sample_range.first, sample_range.second); if (!annotations.empty()) { for (const Annotation &a : annotations) draw_annotation(a, p, get_text_colour(), - annotation_height, left, right, - samples_per_pixel, pixels_offset, y, + annotation_height, left, right, y, base_colour); - y += row_height; + y += _row_height; - _cur_row_headings.push_back(row.title()); + _visible_rows.push_back(rows[i]); } } // Draw the hatching - draw_unresolved_period(p, annotation_height, left, right, - samples_per_pixel, pixels_offset); + draw_unresolved_period(p, annotation_height, left, right); } void DecodeTrace::paint_fore(QPainter &p, int left, int right) @@ -235,13 +219,11 @@ void DecodeTrace::paint_fore(QPainter &p, int left, int right) (void)right; - QFontMetrics m(QApplication::font()); - const int text_height = m.boundingRect(QRect(), 0, "Tg").height(); - const int row_height = (text_height * 6) / 4; + assert(_row_height); - for (size_t i = 0; i < _cur_row_headings.size(); i++) + for (size_t i = 0; i < _visible_rows.size(); i++) { - const int y = i * row_height + get_y(); + const int y = i * _row_height + get_y(); p.setPen(QPen(Qt::NoPen)); p.setBrush(QApplication::palette().brush(QPalette::WindowText)); @@ -256,9 +238,9 @@ void DecodeTrace::paint_fore(QPainter &p, int left, int right) p.drawPolygon(points, countof(points)); } - const QRect r(left + ArrowSize * 2, y - row_height / 2, - right - left, row_height); - const QString h(_cur_row_headings[i]); + const QRect r(left + ArrowSize * 2, y - _row_height / 2, + right - left, _row_height); + const QString h(_visible_rows[i].title()); const int f = Qt::AlignLeft | Qt::AlignVCenter | Qt::TextDontClip; @@ -342,10 +324,12 @@ QMenu* DecodeTrace::create_context_menu(QWidget *parent) } void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a, - QPainter &p, QColor text_color, int h, int left, int right, - double samples_per_pixel, double pixels_offset, int y, + QPainter &p, QColor text_color, int h, int left, int right, int y, size_t base_colour) const { + const double samples_per_pixel = get_samples_per_pixel(); + const double pixels_offset = get_pixels_offset(); + const double start = a.start_sample() / samples_per_pixel - pixels_offset; const double end = a.end_sample() / samples_per_pixel - @@ -464,7 +448,7 @@ void DecodeTrace::draw_error(QPainter &p, const QString &message, } void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, - int right, double samples_per_pixel, double pixels_offset) + int right) const { using namespace pv::data; using pv::data::decode::Decoder; @@ -500,6 +484,10 @@ void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, return; const int y = get_y(); + + const double samples_per_pixel = get_samples_per_pixel(); + const double pixels_offset = get_pixels_offset(); + const double start = max(samples_decoded / samples_per_pixel - pixels_offset, left - 1.0); const double end = min(sample_count / samples_per_pixel - @@ -515,6 +503,138 @@ void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, p.drawRect(no_decode_rect); } +double DecodeTrace::get_pixels_offset() const +{ + assert(_view); + assert(_decoder_stack); + + const double scale = _view->scale(); + assert(scale > 0); + + return (_view->offset() - _decoder_stack->get_start_time()) / scale; +} + +double DecodeTrace::get_samples_per_pixel() const +{ + assert(_view); + assert(_decoder_stack); + + const double scale = _view->scale(); + assert(scale > 0); + + double samplerate = _decoder_stack->samplerate(); + + // Show sample rate as 1Hz when it is unknown + if (samplerate == 0.0) + samplerate = 1.0; + + return samplerate * scale; +} + +pair DecodeTrace::get_sample_range(int x_start, int x_end) const +{ + assert(_view); + assert(_decoder_stack); + + const double samples_per_pixel = get_samples_per_pixel(); + const double pixels_offset = get_pixels_offset(); + + uint64_t start, end; + + start = (uint64_t)max((x_start + pixels_offset) * samples_per_pixel, 0.0); + end = (uint64_t)max((x_end + pixels_offset) * samples_per_pixel, 0.0); + + return make_pair(start, end); +} + +bool DecodeTrace::hover_point_is_over_trace() +{ + assert(_view); + assert(_row_height); + + // Note: if _row_height is valid then _cur_row_headings is valid, too, + // as both are set in paint_mid(). + + // Note: hp.x will be 0 if the cursor is above the header area, + // so we set trace.left to 1 to exclude this. + + QRect trace(1, get_y() - (_row_height/2), + _view->width(), _row_height * _visible_rows.size()); + + // Note: We don't need to check for _row_height being 0 here but + // we do it anyway to be more robust. + + return _row_height && enabled() && trace.contains(_view->hover_point()); +} + +int DecodeTrace::get_row_at_hover_point() +{ + assert(_view); + assert(_row_height); + assert(_decoder_stack); + + QPoint hp = _view->hover_point(); + int hover_row = (hp.y() - get_y() + (_row_height/2)) / _row_height; + + return min(hover_row, (int)_visible_rows.size() - 1); +} + +const QString DecodeTrace::get_annotation_at_hover_point() +{ + using namespace pv::data::decode; + + assert(_view); + QPoint hp = _view->hover_point(); + + pair sample_range = get_sample_range(hp.x(), hp.x() + 1); + + const int hover_row = get_row_at_hover_point(); + + vector annotations; + + assert(_decoder_stack); + _decoder_stack->get_annotation_subset(annotations, _visible_rows[hover_row], + sample_range.first, sample_range.second); + + return (annotations.empty()) ? + QString() : annotations[0].annotations().front(); +} + +void DecodeTrace::show_hover_annotation() +{ + QString ann = get_annotation_at_hover_point(); + + assert(_view); + assert(_row_height); + assert(_text_height); + + if (!ann.isEmpty()) { + const int hover_row = get_row_at_hover_point(); + + // Make sure the tool tip doesn't overlap with the mouse cursor. + // If it did, the tool tip would constantly hide and re-appear. + QPoint hp = _view->hover_point(); + hp.setY(get_y() - (_row_height/2) + + (hover_row * _row_height) - _text_height); + + QToolTip::showText(_view->mapToGlobal(hp), ann); + } else + hide_hover_annotation(); +} + +void DecodeTrace::hide_hover_annotation() +{ + QToolTip::hideText(); +} + +void DecodeTrace::hover_point_changed() +{ + if (hover_point_is_over_trace()) + show_hover_annotation(); + else + hide_hover_annotation(); +} + void DecodeTrace::create_decoder_form(int index, shared_ptr &dec, QWidget *parent, QFormLayout *form)