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