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adb4b10c | 1 | /* |
b3f22de0 | 2 | * This file is part of the PulseView project. |
adb4b10c JH |
3 | * |
4 | * Copyright (C) 2012 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <assert.h> | |
f25770e2 | 22 | #include <limits.h> |
adb4b10c JH |
23 | #include <math.h> |
24 | ||
25 | #include <boost/foreach.hpp> | |
26 | ||
27 | #include <QEvent> | |
cbd80f64 | 28 | #include <QMouseEvent> |
adb4b10c JH |
29 | #include <QScrollBar> |
30 | ||
1d8dca91 | 31 | #include "header.h" |
ccdd3ef5 | 32 | #include "ruler.h" |
2e575351 | 33 | #include "signal.h" |
cdf7bea7 JH |
34 | #include "view.h" |
35 | #include "viewport.h" | |
adb4b10c | 36 | |
51e77110 JH |
37 | #include "../logicdata.h" |
38 | #include "../logicdatasnapshot.h" | |
39 | #include "../sigsession.h" | |
adb4b10c JH |
40 | |
41 | using namespace boost; | |
42 | using namespace std; | |
43 | ||
cdf7bea7 JH |
44 | namespace pv { |
45 | namespace view { | |
adb4b10c | 46 | |
cdf7bea7 JH |
47 | const double View::MaxScale = 1e9; |
48 | const double View::MinScale = 1e-15; | |
adb4b10c | 49 | |
cdf7bea7 JH |
50 | const int View::LabelMarginWidth = 70; |
51 | const int View::RulerHeight = 30; | |
52 | ||
f25770e2 JH |
53 | const int View::MaxScrollValue = INT_MAX / 2; |
54 | ||
8d44d030 JH |
55 | const int View::SignalHeight = 30; |
56 | const int View::SignalMargin = 10; | |
49153683 | 57 | const int View::SignalSnapGridSize = 10; |
1d8dca91 | 58 | |
f76af637 JH |
59 | const QColor View::CursorAreaColour(220, 231, 243); |
60 | ||
2e04f9bd JH |
61 | const QSizeF View::LabelPadding(4, 0); |
62 | ||
cdf7bea7 | 63 | View::View(SigSession &session, QWidget *parent) : |
adb4b10c JH |
64 | QAbstractScrollArea(parent), |
65 | _session(session), | |
cdf7bea7 | 66 | _viewport(new Viewport(*this)), |
ccdd3ef5 | 67 | _ruler(new Ruler(*this)), |
1d8dca91 | 68 | _header(new Header(*this)), |
adb4b10c JH |
69 | _data_length(0), |
70 | _scale(1e-6), | |
71 | _offset(0), | |
cbd80f64 | 72 | _v_offset(0), |
f76af637 JH |
73 | _show_cursors(false), |
74 | _cursors(pair<Cursor, Cursor>(Cursor(*this, 0.0), | |
75 | Cursor(*this, 1.0))), | |
cbd80f64 | 76 | _hover_point(-1, -1) |
adb4b10c JH |
77 | { |
78 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
79 | this, SLOT(h_scroll_value_changed(int))); | |
80 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
81 | this, SLOT(v_scroll_value_changed(int))); | |
82 | connect(&_session, SIGNAL(data_updated()), | |
83 | this, SLOT(data_updated())); | |
1d8dca91 | 84 | |
ca4ec3ea JH |
85 | connect(&_cursors.first, SIGNAL(time_changed()), |
86 | this, SLOT(marker_time_changed())); | |
87 | connect(&_cursors.second, SIGNAL(time_changed()), | |
88 | this, SLOT(marker_time_changed())); | |
89 | ||
54401bbb | 90 | connect(_header, SIGNAL(signals_moved()), |
07204819 | 91 | this, SLOT(on_signals_moved())); |
54401bbb | 92 | |
ccdd3ef5 | 93 | setViewportMargins(LabelMarginWidth, RulerHeight, 0, 0); |
adb4b10c | 94 | setViewport(_viewport); |
cbd80f64 JH |
95 | |
96 | _viewport->installEventFilter(this); | |
97 | _ruler->installEventFilter(this); | |
98 | _header->installEventFilter(this); | |
adb4b10c JH |
99 | } |
100 | ||
1d19ef83 JH |
101 | SigSession& View::session() |
102 | { | |
103 | return _session; | |
104 | } | |
105 | ||
cdf7bea7 | 106 | double View::scale() const |
adb4b10c JH |
107 | { |
108 | return _scale; | |
109 | } | |
110 | ||
cdf7bea7 | 111 | double View::offset() const |
adb4b10c JH |
112 | { |
113 | return _offset; | |
114 | } | |
115 | ||
cdf7bea7 | 116 | int View::v_offset() const |
adb4b10c JH |
117 | { |
118 | return _v_offset; | |
119 | } | |
120 | ||
cdf7bea7 | 121 | void View::zoom(double steps) |
adb4b10c JH |
122 | { |
123 | zoom(steps, (width() - LabelMarginWidth) / 2); | |
124 | } | |
125 | ||
17c0f398 JH |
126 | void View::zoom(double steps, int offset) |
127 | { | |
128 | const double cursor_offset = _offset + _scale * offset; | |
129 | _scale *= pow(3.0/2.0, -steps); | |
130 | _scale = max(min(_scale, MaxScale), MinScale); | |
131 | _offset = cursor_offset - _scale * offset; | |
132 | ||
133 | _ruler->update(); | |
134 | _viewport->update(); | |
135 | update_scroll(); | |
136 | } | |
137 | ||
138 | ||
cdf7bea7 | 139 | void View::set_scale_offset(double scale, double offset) |
adb4b10c JH |
140 | { |
141 | _scale = scale; | |
142 | _offset = offset; | |
ccdd3ef5 | 143 | |
adb4b10c | 144 | update_scroll(); |
ccdd3ef5 | 145 | _ruler->update(); |
adb4b10c JH |
146 | _viewport->update(); |
147 | } | |
148 | ||
f76af637 JH |
149 | bool View::cursors_shown() const |
150 | { | |
151 | return _show_cursors; | |
152 | } | |
153 | ||
154 | void View::show_cursors(bool show) | |
155 | { | |
156 | _show_cursors = show; | |
157 | _ruler->update(); | |
158 | _viewport->update(); | |
159 | } | |
160 | ||
161 | std::pair<Cursor, Cursor>& View::cursors() | |
162 | { | |
163 | return _cursors; | |
164 | } | |
165 | ||
cbd80f64 JH |
166 | const QPoint& View::hover_point() const |
167 | { | |
168 | return _hover_point; | |
169 | } | |
170 | ||
4b192962 JH |
171 | void View::normalize_layout() |
172 | { | |
173 | vector< shared_ptr<Signal> > &sigs = _session.get_signals(); | |
174 | ||
175 | int v_min = INT_MAX; | |
176 | BOOST_FOREACH(const shared_ptr<Signal> s, sigs) | |
177 | v_min = min(s->get_v_offset(), v_min); | |
178 | ||
179 | const int delta = -min(v_min, 0); | |
180 | BOOST_FOREACH(shared_ptr<Signal> s, sigs) | |
181 | s->set_v_offset(s->get_v_offset() + delta); | |
182 | ||
183 | verticalScrollBar()->setSliderPosition(_v_offset + delta); | |
184 | v_scroll_value_changed(verticalScrollBar()->sliderPosition()); | |
185 | } | |
186 | ||
f25770e2 JH |
187 | void View::get_scroll_layout(double &length, double &offset) const |
188 | { | |
189 | const shared_ptr<SignalData> sig_data = _session.get_data(); | |
190 | if(!sig_data) | |
191 | return; | |
192 | ||
193 | length = _data_length / (sig_data->get_samplerate() * _scale); | |
194 | offset = _offset / _scale; | |
195 | } | |
196 | ||
cdf7bea7 | 197 | void View::update_scroll() |
adb4b10c JH |
198 | { |
199 | assert(_viewport); | |
200 | ||
201 | const QSize areaSize = _viewport->size(); | |
202 | ||
203 | // Set the horizontal scroll bar | |
204 | double length = 0, offset = 0; | |
f25770e2 JH |
205 | get_scroll_layout(length, offset); |
206 | length = max(length - areaSize.width(), 0.0); | |
adb4b10c JH |
207 | |
208 | horizontalScrollBar()->setPageStep(areaSize.width()); | |
f25770e2 JH |
209 | |
210 | if(length < MaxScrollValue) { | |
211 | horizontalScrollBar()->setRange(0, length); | |
212 | horizontalScrollBar()->setSliderPosition(offset); | |
213 | } else { | |
214 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
215 | horizontalScrollBar()->setSliderPosition( | |
216 | _offset * MaxScrollValue / (_scale * length)); | |
217 | } | |
adb4b10c JH |
218 | |
219 | // Set the vertical scrollbar | |
220 | verticalScrollBar()->setPageStep(areaSize.height()); | |
221 | verticalScrollBar()->setRange(0, | |
4b192962 JH |
222 | _viewport->get_total_height() + SignalMargin - |
223 | areaSize.height()); | |
adb4b10c JH |
224 | } |
225 | ||
2e575351 JH |
226 | void View::reset_signal_layout() |
227 | { | |
8d44d030 | 228 | int offset = SignalMargin; |
2e575351 JH |
229 | vector< shared_ptr<Signal> > &sigs = _session.get_signals(); |
230 | BOOST_FOREACH(shared_ptr<Signal> s, sigs) { | |
231 | s->set_v_offset(offset); | |
8d44d030 | 232 | offset += SignalHeight + 2 * SignalMargin; |
2e575351 | 233 | } |
4b192962 JH |
234 | |
235 | normalize_layout(); | |
2e575351 JH |
236 | } |
237 | ||
cbd80f64 JH |
238 | bool View::eventFilter(QObject *object, QEvent *event) |
239 | { | |
240 | const QEvent::Type type = event->type(); | |
241 | if(type == QEvent::MouseMove) { | |
242 | ||
243 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
244 | if(object == _viewport) | |
245 | _hover_point = mouse_event->pos(); | |
246 | else if(object == _ruler) | |
247 | _hover_point = QPoint(mouse_event->x(), 0); | |
248 | else if(object == _header) | |
249 | _hover_point = QPoint(0, mouse_event->y()); | |
250 | else | |
251 | _hover_point = QPoint(-1, -1); | |
252 | ||
253 | hover_point_changed(); | |
254 | ||
255 | } else if(type == QEvent::Leave) { | |
256 | _hover_point = QPoint(-1, -1); | |
257 | hover_point_changed(); | |
258 | } | |
259 | ||
260 | return QObject::eventFilter(object, event); | |
261 | } | |
262 | ||
cdf7bea7 | 263 | bool View::viewportEvent(QEvent *e) |
adb4b10c JH |
264 | { |
265 | switch(e->type()) { | |
266 | case QEvent::Paint: | |
267 | case QEvent::MouseButtonPress: | |
268 | case QEvent::MouseButtonRelease: | |
269 | case QEvent::MouseButtonDblClick: | |
270 | case QEvent::MouseMove: | |
271 | case QEvent::Wheel: | |
272 | return false; | |
273 | ||
274 | default: | |
275 | return QAbstractScrollArea::viewportEvent(e); | |
276 | } | |
277 | } | |
278 | ||
cdf7bea7 | 279 | void View::resizeEvent(QResizeEvent *e) |
adb4b10c | 280 | { |
ccdd3ef5 JH |
281 | _ruler->setGeometry(_viewport->x(), 0, |
282 | _viewport->width(), _viewport->y()); | |
283 | _header->setGeometry(0, _viewport->y(), | |
1d8dca91 | 284 | _viewport->x(), _viewport->height()); |
adb4b10c JH |
285 | update_scroll(); |
286 | } | |
287 | ||
cdf7bea7 | 288 | void View::h_scroll_value_changed(int value) |
adb4b10c | 289 | { |
f25770e2 JH |
290 | const int range = horizontalScrollBar()->maximum(); |
291 | if(range < MaxScrollValue) | |
292 | _offset = _scale * value; | |
293 | else { | |
294 | double length = 0, offset; | |
295 | get_scroll_layout(length, offset); | |
296 | _offset = _scale * length * value / MaxScrollValue; | |
297 | } | |
298 | ||
ccdd3ef5 | 299 | _ruler->update(); |
adb4b10c JH |
300 | _viewport->update(); |
301 | } | |
302 | ||
cdf7bea7 | 303 | void View::v_scroll_value_changed(int value) |
adb4b10c JH |
304 | { |
305 | _v_offset = value; | |
1d8dca91 | 306 | _header->update(); |
adb4b10c JH |
307 | _viewport->update(); |
308 | } | |
309 | ||
cdf7bea7 | 310 | void View::data_updated() |
adb4b10c JH |
311 | { |
312 | // Get the new data length | |
313 | _data_length = 0; | |
314 | shared_ptr<LogicData> sig_data = _session.get_data(); | |
315 | if(sig_data) { | |
316 | deque< shared_ptr<LogicDataSnapshot> > &snapshots = | |
317 | sig_data->get_snapshots(); | |
318 | BOOST_FOREACH(shared_ptr<LogicDataSnapshot> s, snapshots) | |
319 | if(s) | |
320 | _data_length = max(_data_length, | |
321 | s->get_sample_count()); | |
322 | } | |
323 | ||
324 | // Update the scroll bars | |
325 | update_scroll(); | |
326 | ||
327 | // Repaint the view | |
328 | _viewport->update(); | |
2e575351 JH |
329 | |
330 | /// @todo: Call this only once when the signals are first created. | |
331 | reset_signal_layout(); | |
adb4b10c | 332 | } |
cdf7bea7 | 333 | |
ca4ec3ea JH |
334 | void View::marker_time_changed() |
335 | { | |
336 | _ruler->update(); | |
337 | _viewport->update(); | |
338 | } | |
339 | ||
07204819 | 340 | void View::on_signals_moved() |
54401bbb | 341 | { |
07204819 JH |
342 | update_scroll(); |
343 | signals_moved(); | |
54401bbb JH |
344 | } |
345 | ||
cdf7bea7 JH |
346 | } // namespace view |
347 | } // namespace pv |