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b42d25c4 JH |
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 | |
efdec55a | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
b42d25c4 JH |
18 | */ |
19 | ||
581724de SA |
20 | #include <algorithm> |
21 | #include <cassert> | |
22 | ||
c04f5a29 | 23 | #include <QColor> |
79a37ed8 | 24 | #include <QMenu> |
581724de SA |
25 | #include <QToolTip> |
26 | ||
2acdb232 | 27 | #include "cursorpair.hpp" |
b42d25c4 | 28 | |
c04f5a29 | 29 | #include "pv/globalsettings.hpp" |
aca9aa83 | 30 | #include "pv/util.hpp" |
3ccf0f7f | 31 | #include "ruler.hpp" |
2acdb232 | 32 | #include "view.hpp" |
b42d25c4 | 33 | |
819f4c25 JH |
34 | using std::max; |
35 | using std::make_pair; | |
36 | using std::min; | |
f9abf97e | 37 | using std::shared_ptr; |
819f4c25 | 38 | using std::pair; |
0ba172cf | 39 | |
b42d25c4 | 40 | namespace pv { |
f4e57597 | 41 | namespace views { |
1573bf16 | 42 | namespace trace { |
b42d25c4 | 43 | |
5139748b JH |
44 | const int CursorPair::DeltaPadding = 8; |
45 | ||
8debe10d | 46 | CursorPair::CursorPair(View &view) : |
5a0192d4 | 47 | TimeItem(view), |
8dbbc7f0 | 48 | first_(new Cursor(view, 0.0)), |
4ab6d244 UH |
49 | second_(new Cursor(view, 1.0)), |
50 | label_incomplete_(true) | |
b42d25c4 | 51 | { |
c04f5a29 SA |
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>()); | |
79a37ed8 MM |
57 | show_frequency_ = settings.value( |
58 | GlobalSettings::Key_View_CursorShowFrequency).value<bool>(); | |
59 | show_interval_ = settings.value( | |
60 | GlobalSettings::Key_View_CursorShowInterval).value<bool>(); | |
c04f5a29 | 61 | |
581724de SA |
62 | connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)), |
63 | this, SLOT(on_hover_point_changed(const QWidget*, QPoint))); | |
b42d25c4 JH |
64 | } |
65 | ||
c04f5a29 SA |
66 | CursorPair::~CursorPair() |
67 | { | |
68 | GlobalSettings::remove_change_handler(this); | |
69 | } | |
70 | ||
5a0192d4 JH |
71 | bool CursorPair::enabled() const |
72 | { | |
73 | return view_.cursors_shown(); | |
74 | } | |
75 | ||
58864c5c | 76 | shared_ptr<Cursor> CursorPair::first() const |
b42d25c4 | 77 | { |
8dbbc7f0 | 78 | return first_; |
b42d25c4 JH |
79 | } |
80 | ||
58864c5c | 81 | shared_ptr<Cursor> CursorPair::second() const |
b42d25c4 | 82 | { |
8dbbc7f0 | 83 | return second_; |
b42d25c4 JH |
84 | } |
85 | ||
2ad82c2e UH |
86 | void CursorPair::set_time(const pv::util::Timestamp& time) |
87 | { | |
60d9b99a | 88 | const pv::util::Timestamp delta = second_->time() - first_->time(); |
3b9c4a0d JH |
89 | first_->set_time(time); |
90 | second_->set_time(time + delta); | |
91 | } | |
92 | ||
710c2a18 | 93 | const pv::util::Timestamp CursorPair::time() const |
94 | { | |
e4e951b7 | 95 | return 0; |
710c2a18 | 96 | } |
97 | ||
5165bb34 JH |
98 | float CursorPair::get_x() const |
99 | { | |
100 | return (first_->get_x() + second_->get_x()) / 2.0f; | |
101 | } | |
102 | ||
710c2a18 | 103 | const pv::util::Timestamp CursorPair::delta(const pv::util::Timestamp& other) const |
104 | { | |
105 | if (other < second_->time()) | |
106 | return other - first_->time(); | |
107 | else | |
108 | return other - second_->time(); | |
109 | } | |
110 | ||
a3d5a7c7 | 111 | QPoint CursorPair::drag_point(const QRect &rect) const |
5a0192d4 | 112 | { |
a3d5a7c7 | 113 | return first_->drag_point(rect); |
5a0192d4 JH |
114 | } |
115 | ||
116 | pv::widgets::Popup* CursorPair::create_popup(QWidget *parent) | |
117 | { | |
118 | (void)parent; | |
119 | return nullptr; | |
120 | } | |
121 | ||
79a37ed8 MM |
122 | QMenu *CursorPair::create_header_context_menu(QWidget *parent) |
123 | { | |
124 | QMenu *menu = new QMenu(parent); | |
125 | ||
126 | QAction *displayIntervalAction = new QAction(tr("Display interval")); | |
127 | displayIntervalAction->setCheckable(true); | |
128 | displayIntervalAction->setChecked(show_interval_); | |
129 | menu->addAction(displayIntervalAction); | |
130 | ||
131 | connect(displayIntervalAction, &QAction::toggled, [=]{ | |
132 | GlobalSettings settings; | |
133 | settings.setValue(GlobalSettings::Key_View_CursorShowInterval, | |
134 | !settings.value(GlobalSettings::Key_View_CursorShowInterval).value<bool>()); | |
135 | }); | |
136 | ||
137 | QAction *displayFrequencyAction = new QAction(tr("Display frequency")); | |
138 | displayFrequencyAction->setCheckable(true); | |
139 | displayFrequencyAction->setChecked(show_frequency_); | |
140 | menu->addAction(displayFrequencyAction); | |
141 | ||
142 | connect(displayFrequencyAction, &QAction::toggled, [=]{ | |
143 | GlobalSettings settings; | |
144 | settings.setValue(GlobalSettings::Key_View_CursorShowFrequency, | |
145 | !settings.value(GlobalSettings::Key_View_CursorShowFrequency).value<bool>()); | |
146 | }); | |
147 | ||
148 | return menu; | |
149 | } | |
150 | ||
689dea92 | 151 | QRectF CursorPair::label_rect(const QRectF &rect) const |
5139748b | 152 | { |
3fed1f31 | 153 | const QSizeF label_size(text_size_ + LabelPadding * 2); |
5139748b JH |
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)); | |
158 | ||
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); | |
163 | ||
164 | return QRectF(left, rect.height() - label_size.height() - | |
6abffa97 | 165 | TimeMarker::ArrowSize - 0.5f, |
5139748b JH |
166 | right - left, height); |
167 | } | |
168 | ||
49028d6c | 169 | void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover) |
332afa74 | 170 | { |
8dbbc7f0 JH |
171 | assert(first_); |
172 | assert(second_); | |
58864c5c | 173 | |
9a377493 JH |
174 | if (!enabled()) |
175 | return; | |
176 | ||
581724de | 177 | const QColor text_color = ViewItem::select_text_color(Cursor::FillColor); |
641574bc | 178 | p.setPen(text_color); |
5139748b | 179 | |
581724de | 180 | QRectF delta_rect(label_rect(rect)); |
5139748b | 181 | const int radius = delta_rect.height() / 2; |
581724de SA |
182 | QRectF text_rect(delta_rect.intersected(rect).adjusted(radius, 0, -radius, 0)); |
183 | ||
66279897 SA |
184 | QString text = format_string(text_rect.width(), |
185 | [&p](const QString& s) -> double { return p.boundingRect(QRectF(), 0, s).width(); }); | |
186 | ||
ef85cfa4 | 187 | text_size_ = p.boundingRect(QRectF(), 0, text).size(); |
581724de SA |
188 | |
189 | if (selected()) { | |
190 | p.setBrush(Qt::transparent); | |
191 | p.setPen(highlight_pen()); | |
5139748b | 192 | p.drawRoundedRect(delta_rect, radius, radius); |
581724de | 193 | } |
5139748b | 194 | |
581724de SA |
195 | p.setBrush(hover ? Cursor::FillColor.lighter() : Cursor::FillColor); |
196 | p.setPen(Cursor::FillColor.darker()); | |
197 | p.drawRoundedRect(delta_rect, radius, radius); | |
5139748b | 198 | |
581724de SA |
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; | |
204 | ||
205 | p.setPen(text_color); | |
206 | p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, text); | |
332afa74 JH |
207 | } |
208 | ||
60938e04 | 209 | void CursorPair::paint_back(QPainter &p, ViewItemPaintParams &pp) |
2ad82c2e | 210 | { |
beb897c6 JH |
211 | if (!enabled()) |
212 | return; | |
213 | ||
0ba172cf | 214 | p.setPen(Qt::NoPen); |
c04f5a29 | 215 | p.setBrush(fill_color_); |
0ba172cf | 216 | |
199441e4 | 217 | const pair<float, float> offsets(get_cursor_offsets()); |
581724de SA |
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()); | |
58864c5c | 220 | |
beb897c6 | 221 | p.drawRect(l, pp.top(), r - l, pp.height()); |
0ba172cf JH |
222 | } |
223 | ||
66279897 | 224 | QString CursorPair::format_string(int max_width, std::function<double(const QString&)> query_size) |
32045253 | 225 | { |
66279897 SA |
226 | int time_precision = 12; |
227 | int freq_precision = 12; | |
3ccf0f7f | 228 | |
66279897 | 229 | QString s = format_string_sub(time_precision, freq_precision); |
ef85cfa4 | 230 | |
66279897 SA |
231 | // Try full "{time} s / {freq} Hz" format |
232 | if ((max_width <= 0) || (query_size(s) <= max_width)) { | |
ef85cfa4 | 233 | label_incomplete_ = false; |
66279897 | 234 | return s; |
ef85cfa4 | 235 | } |
236 | ||
237 | label_incomplete_ = true; | |
238 | ||
66279897 SA |
239 | // Gradually reduce time precision to match frequency precision |
240 | while (time_precision > freq_precision) { | |
241 | time_precision--; | |
242 | ||
243 | s = format_string_sub(time_precision, freq_precision); | |
244 | if (query_size(s) <= max_width) | |
245 | return s; | |
246 | } | |
ef85cfa4 | 247 | |
66279897 SA |
248 | // Gradually reduce both precisions down to zero |
249 | while (time_precision > 0) { | |
250 | time_precision--; | |
251 | freq_precision--; | |
ef85cfa4 | 252 | |
66279897 SA |
253 | s = format_string_sub(time_precision, freq_precision); |
254 | if (query_size(s) <= max_width) | |
255 | return s; | |
ef85cfa4 | 256 | } |
257 | ||
66279897 SA |
258 | // Try no trailing digits and drop the unit to at least display something |
259 | s = format_string_sub(0, 0, false); | |
260 | ||
261 | if (query_size(s) <= max_width) | |
262 | return s; | |
3ccf0f7f | 263 | |
66279897 | 264 | // Give up |
ef85cfa4 | 265 | return "..."; |
32045253 JH |
266 | } |
267 | ||
581724de | 268 | pair<float, float> CursorPair::get_cursor_offsets() const |
5139748b | 269 | { |
8dbbc7f0 JH |
270 | assert(first_); |
271 | assert(second_); | |
58864c5c | 272 | |
581724de | 273 | return pair<float, float>(first_->get_x(), second_->get_x()); |
5139748b JH |
274 | } |
275 | ||
c04f5a29 SA |
276 | void CursorPair::on_setting_changed(const QString &key, const QVariant &value) |
277 | { | |
278 | if (key == GlobalSettings::Key_View_CursorFillColor) | |
279 | fill_color_ = QColor::fromRgba(value.value<uint32_t>()); | |
79a37ed8 MM |
280 | |
281 | if (key == GlobalSettings::Key_View_CursorShowFrequency) | |
282 | show_frequency_ = value.value<bool>(); | |
283 | ||
284 | if (key == GlobalSettings::Key_View_CursorShowInterval) | |
285 | show_interval_ = value.value<bool>(); | |
c04f5a29 SA |
286 | } |
287 | ||
581724de | 288 | void CursorPair::on_hover_point_changed(const QWidget* widget, const QPoint& hp) |
199441e4 | 289 | { |
581724de SA |
290 | if (widget != view_.ruler()) |
291 | return; | |
58864c5c | 292 | |
581724de SA |
293 | if (!label_incomplete_) |
294 | return; | |
295 | ||
296 | if (label_area_.contains(hp)) | |
297 | QToolTip::showText(view_.mapToGlobal(hp), format_string()); | |
298 | else | |
299 | QToolTip::hideText(); // TODO Will break other tooltips when there can be others | |
199441e4 JH |
300 | } |
301 | ||
66279897 SA |
302 | QString CursorPair::format_string_sub(int time_precision, int freq_precision, bool show_unit) |
303 | { | |
79a37ed8 MM |
304 | QString s = " "; |
305 | ||
66279897 SA |
306 | const pv::util::SIPrefix prefix = view_.tick_prefix(); |
307 | const pv::util::Timestamp diff = abs(second_->time() - first_->time()); | |
308 | ||
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); | |
312 | ||
313 | // We can only show a frequency when there's a time base | |
314 | if (view_.time_unit() == pv::util::TimeUnit::Time) { | |
79a37ed8 MM |
315 | int items = 0; |
316 | ||
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); | |
322 | items++; | |
323 | } | |
324 | ||
325 | if (show_interval_) { | |
326 | if (items > 0) | |
327 | s = QString("%1 / %2").arg(s, time); | |
328 | else | |
329 | s = QString("%1").arg(time); | |
330 | items++; | |
331 | } | |
66279897 SA |
332 | } else |
333 | // In this case, we return the number of samples, really | |
79a37ed8 MM |
334 | s = time; |
335 | ||
336 | return s; | |
66279897 SA |
337 | } |
338 | ||
1573bf16 | 339 | } // namespace trace |
f4e57597 | 340 | } // namespace views |
b42d25c4 | 341 | } // namespace pv |