+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <extdef.h>
-
-#include <QApplication>
-#include <QFontMetrics>
-#include <QMouseEvent>
-
-#include "ruler.hpp"
-#include "view.hpp"
-
-using namespace Qt;
-
-using std::function;
-using std::shared_ptr;
-using std::vector;
-
-namespace pv {
-namespace views {
-namespace TraceView {
-
-const float Ruler::RulerHeight = 2.5f; // x Text Height
-const int Ruler::MinorTickSubdivision = 4;
-
-const float Ruler::HoverArrowSize = 0.5f; // x Text Height
-
-Ruler::Ruler(View &parent) :
- MarginWidget(parent)
-{
- setMouseTracking(true);
-
- 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()));
-}
-
-QSize Ruler::sizeHint() const
-{
- const int text_height = calculate_text_height();
- return QSize(0, RulerHeight * text_height);
-}
-
-QSize Ruler::extended_size_hint() const
-{
- QRectF max_rect;
- vector< shared_ptr<TimeItem> > 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);
-}
-
-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);
-}
-
-vector< shared_ptr<ViewItem> > Ruler::items()
-{
- const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
- return vector< shared_ptr<ViewItem> >(
- time_items.begin(), time_items.end());
-}
-
-shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt)
-{
- const vector< shared_ptr<TimeItem> > 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;
-}
-
-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);
- }
-
- const int ValueMargin = 3;
-
- 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;
-
- QPainter p(this);
-
- // Draw the tick marks
- p.setPen(palette().color(foregroundRole()));
-
- 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));
- }
-
- 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, text_height);
-
- p.setRenderHint(QPainter::Antialiasing);
-
- // 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<TimeItem> > 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);
- }
-}
-
-Ruler::TickPositions Ruler::calculate_tick_positions(
- const pv::util::Timestamp& major_period,
- const pv::util::Timestamp& offset,
- const double scale,
- const int width,
- function<QString(const pv::util::Timestamp&)> format_function)
-{
- TickPositions tp;
-
- 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;
-
- int division = (round(first_minor_division -
- first_major_division * MinorTickSubdivision)).convert_to<int>() - 1;
-
- double x;
-
- do {
- pv::util::Timestamp t = t0 + division * minor_period;
- x = ((t - offset) / scale).convert_to<double>();
-
- 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);
- }
-
- division++;
- } while (x < width);
-
- return tp;
-}
-
-void Ruler::mouseDoubleClickEvent(QMouseEvent *event)
-{
- view_.add_flag(view_.offset() + ((double)event->x() + 0.5) * view_.scale());
-}
-
-void Ruler::draw_hover_mark(QPainter &p, int text_height)
-{
- const int x = view_.hover_point().x();
-
- if (x == -1)
- return;
-
- p.setPen(QPen(Qt::NoPen));
- p.setBrush(QBrush(palette().color(foregroundRole())));
-
- const int b = RulerHeight * text_height;
- const float hover_arrow_size = HoverArrowSize * text_height;
- const QPointF points[] = {
- QPointF(x, b),
- 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 TraceView
-} // namespace views
-} // namespace pv
projects / pulseview.git / blobdiff