2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include <QApplication>
23 #include <QFontMetrics>
25 #include <QMouseEvent>
27 #include <pv/globalsettings.hpp>
37 using std::shared_ptr;
44 const float Ruler::RulerHeight = 2.5f; // x Text Height
46 const float Ruler::HoverArrowSize = 0.5f; // x Text Height
48 Ruler::Ruler(View &parent) :
51 setMouseTracking(true);
53 connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)),
54 this, SLOT(on_hover_point_changed(const QWidget*, QPoint)));
55 connect(&view_, SIGNAL(offset_changed()),
56 this, SLOT(invalidate_tick_position_cache()));
57 connect(&view_, SIGNAL(scale_changed()),
58 this, SLOT(invalidate_tick_position_cache()));
59 connect(&view_, SIGNAL(tick_prefix_changed()),
60 this, SLOT(invalidate_tick_position_cache()));
61 connect(&view_, SIGNAL(tick_precision_changed()),
62 this, SLOT(invalidate_tick_position_cache()));
63 connect(&view_, SIGNAL(tick_period_changed()),
64 this, SLOT(invalidate_tick_position_cache()));
65 connect(&view_, SIGNAL(time_unit_changed()),
66 this, SLOT(invalidate_tick_position_cache()));
69 QSize Ruler::sizeHint() const
71 const int text_height = calculate_text_height();
72 return QSize(0, RulerHeight * text_height);
75 QSize Ruler::extended_size_hint() const
78 vector< shared_ptr<TimeItem> > items(view_.time_items());
80 max_rect = max_rect.united(i->label_rect(QRect()));
81 return QSize(0, sizeHint().height() - max_rect.top() / 2 +
82 ViewItem::HighlightRadius);
85 QString Ruler::format_time_with_distance(
86 const pv::util::Timestamp& distance,
87 const pv::util::Timestamp& t,
88 pv::util::SIPrefix prefix,
89 pv::util::TimeUnit unit,
93 const unsigned limit = 60;
98 // If we have to use samples then we have no alternative formats
99 if (unit == pv::util::TimeUnit::Samples)
100 return pv::util::format_time_si_adjusted(t, prefix, precision, "sa", sign);
103 if (unit == pv::util::TimeUnit::Time)
105 // Note: In case of pv::util::TimeUnit::None, unit_string remains empty
107 // View zoomed way out -> low precision (0), big distance (>=60s)
109 if ((precision == 0) && (distance >= limit))
110 return pv::util::format_time_minutes(t, 0, sign);
112 // View in "normal" range -> medium precision, medium step size
113 // -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
114 // View zoomed way in -> high precision (>3), low step size (<1s)
115 // -> HH:MM:SS.mmm... or xxxx (si unit) if less than limit seconds
117 return pv::util::format_time_si_adjusted(t, prefix, precision, unit_string, sign);
119 return pv::util::format_time_minutes(t, precision, sign);
122 pv::util::Timestamp Ruler::get_absolute_time_from_x_pos(uint32_t x) const
124 return view_.offset() + ((double)x + 0.5) * view_.scale();
127 pv::util::Timestamp Ruler::get_ruler_time_from_x_pos(uint32_t x) const
129 return view_.ruler_offset() + ((double)x + 0.5) * view_.scale();
132 pv::util::Timestamp Ruler::get_ruler_time_from_absolute_time(const pv::util::Timestamp& abs_time) const
134 return abs_time + view_.zero_offset();
137 pv::util::Timestamp Ruler::get_absolute_time_from_ruler_time(const pv::util::Timestamp& ruler_time) const
139 return ruler_time - view_.zero_offset();
142 void Ruler::contextMenuEvent(QContextMenuEvent *event)
144 MarginWidget::contextMenuEvent(event);
146 // Don't show a context menu if the MarginWidget found a widget that shows one
147 if (event->isAccepted())
150 context_menu_x_pos_ = event->pos().x();
152 QMenu *const menu = new QMenu(this);
154 QAction *const create_marker = new QAction(tr("Create marker here"), this);
155 connect(create_marker, SIGNAL(triggered()), this, SLOT(on_createMarker()));
156 menu->addAction(create_marker);
158 QAction *const set_zero_position = new QAction(tr("Set as zero point"), this);
159 connect(set_zero_position, SIGNAL(triggered()), this, SLOT(on_setZeroPosition()));
160 menu->addAction(set_zero_position);
162 QAction *const toggle_hover_marker = new QAction(this);
163 connect(toggle_hover_marker, SIGNAL(triggered()), this, SLOT(on_toggleHoverMarker()));
164 menu->addAction(toggle_hover_marker);
166 GlobalSettings settings;
167 const bool hover_marker_shown =
168 settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
169 toggle_hover_marker->setText(hover_marker_shown ?
170 tr("Disable mouse hover marker") : tr("Enable mouse hover marker"));
172 event->setAccepted(true);
173 menu->popup(event->globalPos());
176 void Ruler::resizeEvent(QResizeEvent*)
178 // the tick calculation depends on the width of this widget
179 invalidate_tick_position_cache();
182 vector< shared_ptr<ViewItem> > Ruler::items()
184 const vector< shared_ptr<TimeItem> > time_items(view_.time_items());
185 return vector< shared_ptr<ViewItem> >(
186 time_items.begin(), time_items.end());
189 void Ruler::item_hover(const shared_ptr<ViewItem> &item, QPoint pos)
192 hover_item_ = dynamic_pointer_cast<TimeItem>(item);
195 shared_ptr<TimeItem> Ruler::get_reference_item()
197 if (mouse_modifiers_ & Qt::ShiftModifier)
200 if (hover_item_ != nullptr)
203 shared_ptr<TimeItem> found(nullptr);
204 const vector< shared_ptr<TimeItem> > items(view_.time_items());
205 for (auto i = items.rbegin(); i != items.rend(); i++) {
206 if ((*i)->enabled() && (*i)->selected()) {
207 if (found == nullptr)
210 return nullptr; // Return null if multiple items are selected
217 shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt)
219 const vector< shared_ptr<TimeItem> > items(view_.time_items());
220 for (auto i = items.rbegin(); i != items.rend(); i++)
221 if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt))
226 void Ruler::mouseDoubleClickEvent(QMouseEvent *event)
228 hover_item_ = view_.add_flag(get_absolute_time_from_x_pos(event->x()));
231 void Ruler::paintEvent(QPaintEvent*)
233 if (!tick_position_cache_) {
234 auto ffunc = [this](const pv::util::Timestamp& t) {
235 return format_time_with_distance(
236 this->view_.tick_period(),
238 this->view_.tick_prefix(),
239 this->view_.time_unit(),
240 this->view_.tick_precision());
243 tick_position_cache_ = calculate_tick_positions(
245 view_.ruler_offset(),
248 view_.minor_tick_count(),
252 const int ValueMargin = 3;
254 const int text_height = calculate_text_height();
255 const int ruler_height = RulerHeight * text_height;
256 const int major_tick_y1 = text_height + ValueMargin * 2;
257 const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2;
261 // Draw the tick marks
262 p.setPen(palette().color(foregroundRole()));
264 for (const auto& tick: tick_position_cache_->major) {
265 const int leftedge = 0;
266 const int rightedge = width();
267 const int x_tick = tick.first;
268 if ((x_tick > leftedge) && (x_tick < rightedge)) {
269 const int x_left_bound = QFontMetrics(font()).width(tick.second) / 2;
270 const int x_right_bound = rightedge - x_left_bound;
271 const int x_legend = min(max(x_tick, x_left_bound), x_right_bound);
272 p.drawText(x_legend, ValueMargin, 0, text_height,
273 AlignCenter | AlignTop | TextDontClip, tick.second);
274 p.drawLine(QPointF(x_tick, major_tick_y1),
275 QPointF(tick.first, ruler_height));
279 for (const auto& tick: tick_position_cache_->minor) {
280 p.drawLine(QPointF(tick, minor_tick_y1),
281 QPointF(tick, ruler_height));
284 // Draw the hover mark
285 draw_hover_mark(p, text_height);
287 p.setRenderHint(QPainter::Antialiasing);
289 // The cursor labels are not drawn with the arrows exactly on the
290 // bottom line of the widget, because then the selection shadow
291 // would be clipped away.
292 const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius);
295 const vector< shared_ptr<TimeItem> > items(view_.time_items());
296 for (auto &i : items) {
297 const bool highlight = !item_dragging_ &&
298 i->label_rect(r).contains(mouse_point_);
299 i->paint_label(p, r, highlight);
303 void Ruler::draw_hover_mark(QPainter &p, int text_height)
305 const int x = view_.hover_point().x();
310 p.setPen(QPen(Qt::NoPen));
311 p.setBrush(QBrush(palette().color(foregroundRole())));
313 const int b = RulerHeight * text_height;
314 const float hover_arrow_size = HoverArrowSize * text_height;
315 const QPointF points[] = {
317 QPointF(x - hover_arrow_size, b - hover_arrow_size),
318 QPointF(x + hover_arrow_size, b - hover_arrow_size)
320 p.drawPolygon(points, countof(points));
323 int Ruler::calculate_text_height() const
325 return QFontMetrics(font()).ascent();
328 TickPositions Ruler::calculate_tick_positions(
329 const pv::util::Timestamp& major_period,
330 const pv::util::Timestamp& offset,
333 const unsigned int minor_tick_count,
334 function<QString(const pv::util::Timestamp&)> format_function)
338 const pv::util::Timestamp minor_period = major_period / minor_tick_count;
339 const pv::util::Timestamp first_major_division = floor(offset / major_period);
340 const pv::util::Timestamp first_minor_division = ceil(offset / minor_period);
341 const pv::util::Timestamp t0 = first_major_division * major_period;
343 int division = (round(first_minor_division -
344 first_major_division * minor_tick_count)).convert_to<int>() - 1;
349 pv::util::Timestamp t = t0 + division * minor_period;
350 x = ((t - offset) / scale).convert_to<double>();
352 if (division % minor_tick_count == 0) {
353 // Recalculate 't' without using 'minor_period' which is a fraction
354 t = t0 + division / minor_tick_count * major_period;
355 tp.major.emplace_back(x, format_function(t));
357 tp.minor.emplace_back(x);
366 void Ruler::on_hover_point_changed(const QWidget* widget, const QPoint &hp)
374 void Ruler::invalidate_tick_position_cache()
376 tick_position_cache_ = boost::none;
379 void Ruler::on_createMarker()
381 hover_item_ = view_.add_flag(get_absolute_time_from_x_pos(mouse_down_point_.x()));
384 void Ruler::on_setZeroPosition()
386 view_.set_zero_position(get_absolute_time_from_x_pos(mouse_down_point_.x()));
389 void Ruler::on_toggleHoverMarker()
391 GlobalSettings settings;
392 const bool state = settings.value(GlobalSettings::Key_View_ShowHoverMarker).toBool();
393 settings.setValue(GlobalSettings::Key_View_ShowHoverMarker, !state);