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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
20 | #include <algorithm> | |
21 | #include <cassert> | |
22 | ||
23 | #include <QColor> | |
24 | #include <QMenu> | |
25 | #include <QToolTip> | |
26 | ||
27 | #include "cursorpair.hpp" | |
28 | ||
29 | #include "pv/globalsettings.hpp" | |
30 | #include "pv/util.hpp" | |
31 | #include "ruler.hpp" | |
32 | #include "view.hpp" | |
33 | ||
34 | using std::max; | |
35 | using std::make_pair; | |
36 | using std::min; | |
37 | using std::shared_ptr; | |
38 | using std::pair; | |
39 | ||
40 | namespace pv { | |
41 | namespace views { | |
42 | namespace trace { | |
43 | ||
44 | const int CursorPair::DeltaPadding = 8; | |
45 | ||
46 | CursorPair::CursorPair(View &view) : | |
47 | TimeItem(view), | |
48 | first_(new Cursor(view, 0.0)), | |
49 | second_(new Cursor(view, 1.0)), | |
50 | label_incomplete_(true) | |
51 | { | |
52 | GlobalSettings::add_change_handler(this); | |
53 | ||
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>(); | |
61 | show_samples_ = settings.value( | |
62 | GlobalSettings::Key_View_CursorShowSamples).value<bool>(); | |
63 | ||
64 | connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)), | |
65 | this, SLOT(on_hover_point_changed(const QWidget*, QPoint))); | |
66 | } | |
67 | ||
68 | CursorPair::~CursorPair() | |
69 | { | |
70 | GlobalSettings::remove_change_handler(this); | |
71 | } | |
72 | ||
73 | bool CursorPair::enabled() const | |
74 | { | |
75 | return view_.cursors_shown(); | |
76 | } | |
77 | ||
78 | shared_ptr<Cursor> CursorPair::first() const | |
79 | { | |
80 | return first_; | |
81 | } | |
82 | ||
83 | shared_ptr<Cursor> CursorPair::second() const | |
84 | { | |
85 | return second_; | |
86 | } | |
87 | ||
88 | void CursorPair::set_time(const pv::util::Timestamp& time) | |
89 | { | |
90 | const pv::util::Timestamp delta = second_->time() - first_->time(); | |
91 | first_->set_time(time); | |
92 | second_->set_time(time + delta); | |
93 | } | |
94 | ||
95 | const pv::util::Timestamp CursorPair::time() const | |
96 | { | |
97 | return 0; | |
98 | } | |
99 | ||
100 | float CursorPair::get_x() const | |
101 | { | |
102 | return (first_->get_x() + second_->get_x()) / 2.0f; | |
103 | } | |
104 | ||
105 | const pv::util::Timestamp CursorPair::delta(const pv::util::Timestamp& other) const | |
106 | { | |
107 | if (other < second_->time()) | |
108 | return other - first_->time(); | |
109 | else | |
110 | return other - second_->time(); | |
111 | } | |
112 | ||
113 | QPoint CursorPair::drag_point(const QRect &rect) const | |
114 | { | |
115 | return first_->drag_point(rect); | |
116 | } | |
117 | ||
118 | pv::widgets::Popup* CursorPair::create_popup(QWidget *parent) | |
119 | { | |
120 | (void)parent; | |
121 | return nullptr; | |
122 | } | |
123 | ||
124 | QMenu *CursorPair::create_header_context_menu(QWidget *parent) | |
125 | { | |
126 | QMenu *menu = new QMenu(parent); | |
127 | ||
128 | QAction *displayIntervalAction = new QAction(tr("Display interval"), this); | |
129 | displayIntervalAction->setCheckable(true); | |
130 | displayIntervalAction->setChecked(show_interval_); | |
131 | menu->addAction(displayIntervalAction); | |
132 | ||
133 | connect(displayIntervalAction, &QAction::toggled, [=]{ | |
134 | GlobalSettings settings; | |
135 | settings.setValue(GlobalSettings::Key_View_CursorShowInterval, | |
136 | !settings.value(GlobalSettings::Key_View_CursorShowInterval).value<bool>()); | |
137 | }); | |
138 | ||
139 | QAction *displayFrequencyAction = new QAction(tr("Display frequency"), this); | |
140 | displayFrequencyAction->setCheckable(true); | |
141 | displayFrequencyAction->setChecked(show_frequency_); | |
142 | menu->addAction(displayFrequencyAction); | |
143 | ||
144 | connect(displayFrequencyAction, &QAction::toggled, [=]{ | |
145 | GlobalSettings settings; | |
146 | settings.setValue(GlobalSettings::Key_View_CursorShowFrequency, | |
147 | !settings.value(GlobalSettings::Key_View_CursorShowFrequency).value<bool>()); | |
148 | }); | |
149 | ||
150 | QAction *displaySamplesAction = new QAction(tr("Display samples"), this); | |
151 | displaySamplesAction->setCheckable(true); | |
152 | displaySamplesAction->setChecked(show_samples_); | |
153 | menu->addAction(displaySamplesAction); | |
154 | ||
155 | connect(displaySamplesAction, &QAction::toggled, [=]{ | |
156 | GlobalSettings settings; | |
157 | settings.setValue(GlobalSettings::Key_View_CursorShowSamples, | |
158 | !settings.value(GlobalSettings::Key_View_CursorShowSamples).value<bool>()); | |
159 | }); | |
160 | ||
161 | return menu; | |
162 | } | |
163 | ||
164 | QRectF CursorPair::label_rect(const QRectF &rect) const | |
165 | { | |
166 | const QSizeF label_size(text_size_ + LabelPadding * 2); | |
167 | const pair<float, float> offsets(get_cursor_offsets()); | |
168 | const pair<float, float> normal_offsets( | |
169 | (offsets.first < offsets.second) ? offsets : | |
170 | make_pair(offsets.second, offsets.first)); | |
171 | ||
172 | const float height = label_size.height(); | |
173 | const float left = max(normal_offsets.first + DeltaPadding, -height); | |
174 | const float right = min(normal_offsets.second - DeltaPadding, | |
175 | (float)rect.width() + height); | |
176 | ||
177 | return QRectF(left, rect.height() - label_size.height() - | |
178 | TimeMarker::ArrowSize - 0.5f, | |
179 | right - left, height); | |
180 | } | |
181 | ||
182 | void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover) | |
183 | { | |
184 | assert(first_); | |
185 | assert(second_); | |
186 | ||
187 | if (!enabled()) | |
188 | return; | |
189 | ||
190 | const QColor text_color = ViewItem::select_text_color(Cursor::FillColor); | |
191 | p.setPen(text_color); | |
192 | ||
193 | QRectF delta_rect(label_rect(rect)); | |
194 | const int radius = delta_rect.height() / 2; | |
195 | QRectF text_rect(delta_rect.intersected(rect).adjusted(radius, 0, -radius, 0)); | |
196 | ||
197 | QString text = format_string(text_rect.width(), | |
198 | [&p](const QString& s) -> double { return p.boundingRect(QRectF(), 0, s).width(); }); | |
199 | ||
200 | text_size_ = p.boundingRect(QRectF(), 0, text).size(); | |
201 | ||
202 | if (selected()) { | |
203 | p.setBrush(Qt::transparent); | |
204 | p.setPen(highlight_pen()); | |
205 | p.drawRoundedRect(delta_rect, radius, radius); | |
206 | } | |
207 | ||
208 | p.setBrush(hover ? Cursor::FillColor.lighter() : Cursor::FillColor); | |
209 | p.setPen(Cursor::FillColor.darker()); | |
210 | p.drawRoundedRect(delta_rect, radius, radius); | |
211 | ||
212 | delta_rect.adjust(1, 1, -1, -1); | |
213 | p.setPen(Cursor::FillColor.lighter()); | |
214 | const int highlight_radius = delta_rect.height() / 2 - 2; | |
215 | p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius); | |
216 | label_area_ = delta_rect; | |
217 | ||
218 | p.setPen(text_color); | |
219 | p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, text); | |
220 | } | |
221 | ||
222 | void CursorPair::paint_back(QPainter &p, ViewItemPaintParams &pp) | |
223 | { | |
224 | if (!enabled()) | |
225 | return; | |
226 | ||
227 | p.setPen(Qt::NoPen); | |
228 | p.setBrush(fill_color_); | |
229 | ||
230 | const pair<float, float> offsets(get_cursor_offsets()); | |
231 | const int l = (int)max(min(offsets.first, offsets.second), 0.0f); | |
232 | const int r = (int)min(max(offsets.first, offsets.second), (float)pp.width()); | |
233 | ||
234 | p.drawRect(l, pp.top(), r - l, pp.height()); | |
235 | } | |
236 | ||
237 | QString CursorPair::format_string(int max_width, std::function<double(const QString&)> query_size) | |
238 | { | |
239 | int time_precision = 12; | |
240 | int freq_precision = 12; | |
241 | ||
242 | QString s = format_string_sub(time_precision, freq_precision); | |
243 | ||
244 | // Try full "{time} s / {freq} Hz" format | |
245 | if ((max_width <= 0) || (query_size(s) <= max_width)) { | |
246 | label_incomplete_ = false; | |
247 | return s; | |
248 | } | |
249 | ||
250 | label_incomplete_ = true; | |
251 | ||
252 | // Gradually reduce time precision to match frequency precision | |
253 | while (time_precision > freq_precision) { | |
254 | time_precision--; | |
255 | ||
256 | s = format_string_sub(time_precision, freq_precision); | |
257 | if (query_size(s) <= max_width) | |
258 | return s; | |
259 | } | |
260 | ||
261 | // Gradually reduce both precisions down to zero | |
262 | while (time_precision > 0) { | |
263 | time_precision--; | |
264 | freq_precision--; | |
265 | ||
266 | s = format_string_sub(time_precision, freq_precision); | |
267 | if (query_size(s) <= max_width) | |
268 | return s; | |
269 | } | |
270 | ||
271 | // Try no trailing digits and drop the unit to at least display something | |
272 | s = format_string_sub(0, 0, false); | |
273 | ||
274 | if (query_size(s) <= max_width) | |
275 | return s; | |
276 | ||
277 | // Give up | |
278 | return "..."; | |
279 | } | |
280 | ||
281 | pair<float, float> CursorPair::get_cursor_offsets() const | |
282 | { | |
283 | assert(first_); | |
284 | assert(second_); | |
285 | ||
286 | return pair<float, float>(first_->get_x(), second_->get_x()); | |
287 | } | |
288 | ||
289 | void CursorPair::on_setting_changed(const QString &key, const QVariant &value) | |
290 | { | |
291 | if (key == GlobalSettings::Key_View_CursorFillColor) | |
292 | fill_color_ = QColor::fromRgba(value.value<uint32_t>()); | |
293 | ||
294 | if (key == GlobalSettings::Key_View_CursorShowFrequency) | |
295 | show_frequency_ = value.value<bool>(); | |
296 | ||
297 | if (key == GlobalSettings::Key_View_CursorShowInterval) | |
298 | show_interval_ = value.value<bool>(); | |
299 | ||
300 | if (key == GlobalSettings::Key_View_CursorShowSamples) | |
301 | show_samples_ = value.value<bool>(); | |
302 | } | |
303 | ||
304 | void CursorPair::on_hover_point_changed(const QWidget* widget, const QPoint& hp) | |
305 | { | |
306 | if (widget != view_.ruler()) | |
307 | return; | |
308 | ||
309 | if (!label_incomplete_) | |
310 | return; | |
311 | ||
312 | if (label_area_.contains(hp)) | |
313 | QToolTip::showText(view_.mapToGlobal(hp), format_string()); | |
314 | else | |
315 | QToolTip::hideText(); // TODO Will break other tooltips when there can be others | |
316 | } | |
317 | ||
318 | QString CursorPair::format_string_sub(int time_precision, int freq_precision, bool show_unit) | |
319 | { | |
320 | QString s = " "; | |
321 | ||
322 | const pv::util::SIPrefix prefix = view_.tick_prefix(); | |
323 | const pv::util::Timestamp diff = abs(second_->time() - first_->time()); | |
324 | ||
325 | const QString time = Ruler::format_time_with_distance( | |
326 | diff, diff, prefix, (show_unit ? view_.time_unit() : pv::util::TimeUnit::None), | |
327 | time_precision, false); | |
328 | ||
329 | // We can only show a frequency when there's a time base | |
330 | if (view_.time_unit() == pv::util::TimeUnit::Time) { | |
331 | int items = 0; | |
332 | ||
333 | if (show_frequency_) { | |
334 | const QString freq = util::format_value_si( | |
335 | 1 / diff.convert_to<double>(), pv::util::SIPrefix::unspecified, | |
336 | freq_precision, (show_unit ? "Hz" : nullptr), false); | |
337 | s = QString("%1").arg(freq); | |
338 | items++; | |
339 | } | |
340 | ||
341 | if (show_interval_) { | |
342 | if (items > 0) | |
343 | s = QString("%1 / %2").arg(s, time); | |
344 | else | |
345 | s = QString("%1").arg(time); | |
346 | items++; | |
347 | } | |
348 | ||
349 | if (show_samples_) { | |
350 | const QString samples = QString::number( | |
351 | (diff * view_.session().get_samplerate()).convert_to<uint64_t>()); | |
352 | if (items > 0) | |
353 | s = QString("%1 / %2").arg(s, samples); | |
354 | else | |
355 | s = QString("%1").arg(samples); | |
356 | } | |
357 | } else | |
358 | // In this case, we return the number of samples, really | |
359 | s = time; | |
360 | ||
361 | return s; | |
362 | } | |
363 | ||
364 | } // namespace trace | |
365 | } // namespace views | |
366 | } // namespace pv |