2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 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/>.
27 #include "cursorpair.hpp"
29 #include "pv/globalsettings.hpp"
30 #include "pv/util.hpp"
37 using std::shared_ptr;
44 const int CursorPair::DeltaPadding = 8;
46 CursorPair::CursorPair(View &view) :
48 first_(new Cursor(view, 0.0)),
49 second_(new Cursor(view, 1.0)),
50 label_incomplete_(true)
52 GlobalSettings::add_change_handler(this);
54 GlobalSettings settings;
55 fill_color_ = QColor::fromRgba(settings.value(
56 GlobalSettings::Key_View_CursorFillColor).value<uint32_t>());
57 show_frequency_ = settings.value(
58 GlobalSettings::Key_View_CursorShowFrequency).value<bool>();
59 show_interval_ = settings.value(
60 GlobalSettings::Key_View_CursorShowInterval).value<bool>();
62 connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)),
63 this, SLOT(on_hover_point_changed(const QWidget*, QPoint)));
66 CursorPair::~CursorPair()
68 GlobalSettings::remove_change_handler(this);
71 bool CursorPair::enabled() const
73 return view_.cursors_shown();
76 shared_ptr<Cursor> CursorPair::first() const
81 shared_ptr<Cursor> CursorPair::second() const
86 void CursorPair::set_time(const pv::util::Timestamp& time)
88 const pv::util::Timestamp delta = second_->time() - first_->time();
89 first_->set_time(time);
90 second_->set_time(time + delta);
93 const pv::util::Timestamp CursorPair::time() const
98 float CursorPair::get_x() const
100 return (first_->get_x() + second_->get_x()) / 2.0f;
103 const pv::util::Timestamp CursorPair::delta(const pv::util::Timestamp& other) const
105 if (other < second_->time())
106 return other - first_->time();
108 return other - second_->time();
111 QPoint CursorPair::drag_point(const QRect &rect) const
113 return first_->drag_point(rect);
116 pv::widgets::Popup* CursorPair::create_popup(QWidget *parent)
122 QMenu *CursorPair::create_header_context_menu(QWidget *parent)
124 QMenu *menu = new QMenu(parent);
126 QAction *displayIntervalAction = new QAction(tr("Display interval"));
127 displayIntervalAction->setCheckable(true);
128 displayIntervalAction->setChecked(show_interval_);
129 menu->addAction(displayIntervalAction);
131 connect(displayIntervalAction, &QAction::toggled, [=]{
132 GlobalSettings settings;
133 settings.setValue(GlobalSettings::Key_View_CursorShowInterval,
134 !settings.value(GlobalSettings::Key_View_CursorShowInterval).value<bool>());
137 QAction *displayFrequencyAction = new QAction(tr("Display frequency"));
138 displayFrequencyAction->setCheckable(true);
139 displayFrequencyAction->setChecked(show_frequency_);
140 menu->addAction(displayFrequencyAction);
142 connect(displayFrequencyAction, &QAction::toggled, [=]{
143 GlobalSettings settings;
144 settings.setValue(GlobalSettings::Key_View_CursorShowFrequency,
145 !settings.value(GlobalSettings::Key_View_CursorShowFrequency).value<bool>());
151 QRectF CursorPair::label_rect(const QRectF &rect) const
153 const QSizeF label_size(text_size_ + LabelPadding * 2);
154 const pair<float, float> offsets(get_cursor_offsets());
155 const pair<float, float> normal_offsets(
156 (offsets.first < offsets.second) ? offsets :
157 make_pair(offsets.second, offsets.first));
159 const float height = label_size.height();
160 const float left = max(normal_offsets.first + DeltaPadding, -height);
161 const float right = min(normal_offsets.second - DeltaPadding,
162 (float)rect.width() + height);
164 return QRectF(left, rect.height() - label_size.height() -
165 TimeMarker::ArrowSize - 0.5f,
166 right - left, height);
169 void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover)
177 const QColor text_color = ViewItem::select_text_color(Cursor::FillColor);
178 p.setPen(text_color);
180 QRectF delta_rect(label_rect(rect));
181 const int radius = delta_rect.height() / 2;
182 QRectF text_rect(delta_rect.intersected(rect).adjusted(radius, 0, -radius, 0));
184 QString text = format_string(text_rect.width(),
185 [&p](const QString& s) -> double { return p.boundingRect(QRectF(), 0, s).width(); });
187 text_size_ = p.boundingRect(QRectF(), 0, text).size();
190 p.setBrush(Qt::transparent);
191 p.setPen(highlight_pen());
192 p.drawRoundedRect(delta_rect, radius, radius);
195 p.setBrush(hover ? Cursor::FillColor.lighter() : Cursor::FillColor);
196 p.setPen(Cursor::FillColor.darker());
197 p.drawRoundedRect(delta_rect, radius, radius);
199 delta_rect.adjust(1, 1, -1, -1);
200 p.setPen(Cursor::FillColor.lighter());
201 const int highlight_radius = delta_rect.height() / 2 - 2;
202 p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius);
203 label_area_ = delta_rect;
205 p.setPen(text_color);
206 p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, text);
209 void CursorPair::paint_back(QPainter &p, ViewItemPaintParams &pp)
215 p.setBrush(fill_color_);
217 const pair<float, float> offsets(get_cursor_offsets());
218 const int l = (int)max(min(offsets.first, offsets.second), 0.0f);
219 const int r = (int)min(max(offsets.first, offsets.second), (float)pp.width());
221 p.drawRect(l, pp.top(), r - l, pp.height());
224 QString CursorPair::format_string(int max_width, std::function<double(const QString&)> query_size)
226 int time_precision = 12;
227 int freq_precision = 12;
229 QString s = format_string_sub(time_precision, freq_precision);
231 // Try full "{time} s / {freq} Hz" format
232 if ((max_width <= 0) || (query_size(s) <= max_width)) {
233 label_incomplete_ = false;
237 label_incomplete_ = true;
239 // Gradually reduce time precision to match frequency precision
240 while (time_precision > freq_precision) {
243 s = format_string_sub(time_precision, freq_precision);
244 if (query_size(s) <= max_width)
248 // Gradually reduce both precisions down to zero
249 while (time_precision > 0) {
253 s = format_string_sub(time_precision, freq_precision);
254 if (query_size(s) <= max_width)
258 // Try no trailing digits and drop the unit to at least display something
259 s = format_string_sub(0, 0, false);
261 if (query_size(s) <= max_width)
268 pair<float, float> CursorPair::get_cursor_offsets() const
273 return pair<float, float>(first_->get_x(), second_->get_x());
276 void CursorPair::on_setting_changed(const QString &key, const QVariant &value)
278 if (key == GlobalSettings::Key_View_CursorFillColor)
279 fill_color_ = QColor::fromRgba(value.value<uint32_t>());
281 if (key == GlobalSettings::Key_View_CursorShowFrequency)
282 show_frequency_ = value.value<bool>();
284 if (key == GlobalSettings::Key_View_CursorShowInterval)
285 show_interval_ = value.value<bool>();
288 void CursorPair::on_hover_point_changed(const QWidget* widget, const QPoint& hp)
290 if (widget != view_.ruler())
293 if (!label_incomplete_)
296 if (label_area_.contains(hp))
297 QToolTip::showText(view_.mapToGlobal(hp), format_string());
299 QToolTip::hideText(); // TODO Will break other tooltips when there can be others
302 QString CursorPair::format_string_sub(int time_precision, int freq_precision, bool show_unit)
306 const pv::util::SIPrefix prefix = view_.tick_prefix();
307 const pv::util::Timestamp diff = abs(second_->time() - first_->time());
309 const QString time = Ruler::format_time_with_distance(
310 diff, diff, prefix, (show_unit ? view_.time_unit() : pv::util::TimeUnit::None),
311 time_precision, false);
313 // We can only show a frequency when there's a time base
314 if (view_.time_unit() == pv::util::TimeUnit::Time) {
317 if (show_frequency_) {
318 const QString freq = util::format_value_si(
319 1 / diff.convert_to<double>(), pv::util::SIPrefix::unspecified,
320 freq_precision, (show_unit ? "Hz" : nullptr), false);
321 s = QString("%1").arg(freq);
325 if (show_interval_) {
327 s = QString("%1 / %2").arg(s, time);
329 s = QString("%1").arg(time);
333 // In this case, we return the number of samples, really