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1 | /* | |
2 | * This file is part of the PulseView project. | |
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 "header.h" | |
22 | #include "view.h" | |
23 | ||
24 | #include "signal.h" | |
25 | #include "../sigsession.h" | |
26 | ||
27 | #include <assert.h> | |
28 | ||
29 | #include <boost/foreach.hpp> | |
30 | ||
31 | #include <QApplication> | |
32 | #include <QMenu> | |
33 | #include <QMouseEvent> | |
34 | #include <QPainter> | |
35 | #include <QRect> | |
36 | ||
37 | #include <pv/widgets/popup.h> | |
38 | ||
39 | using namespace boost; | |
40 | using namespace std; | |
41 | ||
42 | namespace pv { | |
43 | namespace view { | |
44 | ||
45 | const int Header::Padding = 12; | |
46 | ||
47 | Header::Header(View &parent) : | |
48 | MarginWidget(parent), | |
49 | _dragging(false) | |
50 | { | |
51 | setFocusPolicy(Qt::ClickFocus); | |
52 | setMouseTracking(true); | |
53 | ||
54 | connect(&_view.session(), SIGNAL(signals_changed()), | |
55 | this, SLOT(on_signals_changed())); | |
56 | ||
57 | connect(&_view, SIGNAL(signals_moved()), | |
58 | this, SLOT(on_signals_moved())); | |
59 | } | |
60 | ||
61 | QSize Header::sizeHint() const | |
62 | { | |
63 | int max_width = 0; | |
64 | ||
65 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
66 | BOOST_FOREACH(shared_ptr<Trace> t, traces) { | |
67 | assert(t); | |
68 | max_width = max(max_width, (int)t->get_label_rect(0).width()); | |
69 | } | |
70 | ||
71 | return QSize(max_width + Padding, 0); | |
72 | } | |
73 | ||
74 | shared_ptr<Trace> Header::get_mouse_over_trace(const QPoint &pt) | |
75 | { | |
76 | const int w = width(); | |
77 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
78 | ||
79 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
80 | { | |
81 | assert(t); | |
82 | if (t->pt_in_label_rect(0, w, pt)) | |
83 | return t; | |
84 | } | |
85 | ||
86 | return shared_ptr<Trace>(); | |
87 | } | |
88 | ||
89 | void Header::clear_selection() | |
90 | { | |
91 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
92 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) { | |
93 | assert(t); | |
94 | t->select(false); | |
95 | } | |
96 | ||
97 | update(); | |
98 | } | |
99 | ||
100 | void Header::paintEvent(QPaintEvent*) | |
101 | { | |
102 | const int w = width(); | |
103 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
104 | ||
105 | QPainter painter(this); | |
106 | painter.setRenderHint(QPainter::Antialiasing); | |
107 | ||
108 | const bool dragging = !_drag_traces.empty(); | |
109 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
110 | { | |
111 | assert(t); | |
112 | ||
113 | const bool highlight = !dragging && t->pt_in_label_rect( | |
114 | 0, w, _mouse_point); | |
115 | t->paint_label(painter, w, highlight); | |
116 | } | |
117 | ||
118 | painter.end(); | |
119 | } | |
120 | ||
121 | void Header::mousePressEvent(QMouseEvent *event) | |
122 | { | |
123 | assert(event); | |
124 | ||
125 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
126 | ||
127 | if (event->button() & Qt::LeftButton) { | |
128 | _mouse_down_point = event->pos(); | |
129 | ||
130 | // Save the offsets of any signals which will be dragged | |
131 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
132 | if (t->selected()) | |
133 | _drag_traces.push_back( | |
134 | make_pair(t, t->get_v_offset())); | |
135 | } | |
136 | ||
137 | // Select the signal if it has been clicked | |
138 | const shared_ptr<Trace> mouse_over_trace = | |
139 | get_mouse_over_trace(event->pos()); | |
140 | if (mouse_over_trace) { | |
141 | if (mouse_over_trace->selected()) | |
142 | mouse_over_trace->select(false); | |
143 | else { | |
144 | mouse_over_trace->select(true); | |
145 | ||
146 | if (~QApplication::keyboardModifiers() & | |
147 | Qt::ControlModifier) | |
148 | _drag_traces.clear(); | |
149 | ||
150 | // Add the signal to the drag list | |
151 | if (event->button() & Qt::LeftButton) | |
152 | _drag_traces.push_back( | |
153 | make_pair(mouse_over_trace, | |
154 | mouse_over_trace->get_v_offset())); | |
155 | } | |
156 | } | |
157 | ||
158 | if (~QApplication::keyboardModifiers() & Qt::ControlModifier) { | |
159 | // Unselect all other signals because the Ctrl is not | |
160 | // pressed | |
161 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
162 | if (t != mouse_over_trace) | |
163 | t->select(false); | |
164 | } | |
165 | ||
166 | selection_changed(); | |
167 | update(); | |
168 | } | |
169 | ||
170 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
171 | { | |
172 | using pv::widgets::Popup; | |
173 | ||
174 | assert(event); | |
175 | if (event->button() == Qt::LeftButton) { | |
176 | if (_dragging) | |
177 | _view.normalize_layout(); | |
178 | else | |
179 | { | |
180 | const shared_ptr<Trace> mouse_over_trace = | |
181 | get_mouse_over_trace(event->pos()); | |
182 | if (mouse_over_trace) { | |
183 | Popup *const p = | |
184 | mouse_over_trace->create_popup(&_view); | |
185 | p->set_position(mapToGlobal(QPoint(width(), | |
186 | mouse_over_trace->get_y())), | |
187 | Popup::Right); | |
188 | p->show(); | |
189 | } | |
190 | } | |
191 | ||
192 | _dragging = false; | |
193 | _drag_traces.clear(); | |
194 | } | |
195 | } | |
196 | ||
197 | void Header::mouseMoveEvent(QMouseEvent *event) | |
198 | { | |
199 | assert(event); | |
200 | _mouse_point = event->pos(); | |
201 | ||
202 | if (!(event->buttons() & Qt::LeftButton)) | |
203 | return; | |
204 | ||
205 | if ((event->pos() - _mouse_down_point).manhattanLength() < | |
206 | QApplication::startDragDistance()) | |
207 | return; | |
208 | ||
209 | // Move the signals if we are dragging | |
210 | if (!_drag_traces.empty()) | |
211 | { | |
212 | _dragging = true; | |
213 | ||
214 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
215 | ||
216 | for (std::list<std::pair<boost::weak_ptr<Trace>, | |
217 | int> >::iterator i = _drag_traces.begin(); | |
218 | i != _drag_traces.end(); i++) { | |
219 | const boost::shared_ptr<Trace> trace((*i).first); | |
220 | if (trace) { | |
221 | const int y = (*i).second + delta; | |
222 | const int y_snap = | |
223 | ((y + View::SignalSnapGridSize / 2) / | |
224 | View::SignalSnapGridSize) * | |
225 | View::SignalSnapGridSize; | |
226 | trace->set_v_offset(y_snap); | |
227 | ||
228 | // Ensure the trace is selected | |
229 | trace->select(); | |
230 | } | |
231 | ||
232 | } | |
233 | ||
234 | signals_moved(); | |
235 | } | |
236 | ||
237 | update(); | |
238 | } | |
239 | ||
240 | void Header::leaveEvent(QEvent*) | |
241 | { | |
242 | _mouse_point = QPoint(-1, -1); | |
243 | update(); | |
244 | } | |
245 | ||
246 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
247 | { | |
248 | const shared_ptr<Trace> t = get_mouse_over_trace(_mouse_point); | |
249 | ||
250 | if (t) | |
251 | t->create_context_menu(this)->exec(event->globalPos()); | |
252 | } | |
253 | ||
254 | void Header::keyPressEvent(QKeyEvent *e) | |
255 | { | |
256 | assert(e); | |
257 | ||
258 | switch (e->key()) | |
259 | { | |
260 | case Qt::Key_Delete: | |
261 | { | |
262 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
263 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
264 | if (t->selected()) | |
265 | t->delete_pressed(); | |
266 | break; | |
267 | } | |
268 | } | |
269 | } | |
270 | ||
271 | void Header::on_signals_changed() | |
272 | { | |
273 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
274 | BOOST_FOREACH(shared_ptr<Trace> t, traces) { | |
275 | assert(t); | |
276 | connect(t.get(), SIGNAL(visibility_changed()), | |
277 | this, SLOT(update())); | |
278 | connect(t.get(), SIGNAL(text_changed()), | |
279 | this, SLOT(on_trace_text_changed())); | |
280 | connect(t.get(), SIGNAL(colour_changed()), | |
281 | this, SLOT(update())); | |
282 | } | |
283 | } | |
284 | ||
285 | void Header::on_signals_moved() | |
286 | { | |
287 | update(); | |
288 | } | |
289 | ||
290 | void Header::on_trace_text_changed() | |
291 | { | |
292 | update(); | |
293 | geometry_updated(); | |
294 | } | |
295 | ||
296 | } // namespace view | |
297 | } // namespace pv |