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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 <QColorDialog> | |
33 | #include <QInputDialog> | |
34 | #include <QMenu> | |
35 | #include <QMouseEvent> | |
36 | #include <QPainter> | |
37 | #include <QRect> | |
38 | ||
39 | using namespace boost; | |
40 | using namespace std; | |
41 | ||
42 | namespace pv { | |
43 | namespace view { | |
44 | ||
45 | Header::Header(View &parent) : | |
46 | QWidget(&parent), | |
47 | _view(parent), | |
48 | _action_set_name(new QAction(tr("Set &Name..."), this)), | |
49 | _action_set_colour(new QAction(tr("Set &Colour..."), this)) | |
50 | { | |
51 | setMouseTracking(true); | |
52 | ||
53 | connect(_action_set_name, SIGNAL(triggered()), | |
54 | this, SLOT(on_action_set_name_triggered())); | |
55 | connect(_action_set_colour, SIGNAL(triggered()), | |
56 | this, SLOT(on_action_set_colour_triggered())); | |
57 | ||
58 | connect(&_view, SIGNAL(signals_moved()), | |
59 | this, SLOT(on_signals_moved())); | |
60 | } | |
61 | ||
62 | boost::shared_ptr<pv::view::Signal> Header::get_mouse_over_signal( | |
63 | const QPoint &pt) | |
64 | { | |
65 | const int w = width(); | |
66 | const vector< shared_ptr<Signal> > sigs( | |
67 | _view.session().get_signals()); | |
68 | ||
69 | const int v_offset = _view.v_offset(); | |
70 | BOOST_FOREACH(const shared_ptr<Signal> s, sigs) | |
71 | { | |
72 | assert(s); | |
73 | ||
74 | if (s->pt_in_label_rect(s->get_v_offset() - v_offset, | |
75 | 0, w, pt)) | |
76 | return s; | |
77 | } | |
78 | ||
79 | return shared_ptr<Signal>(); | |
80 | } | |
81 | ||
82 | void Header::paintEvent(QPaintEvent*) | |
83 | { | |
84 | const int w = width(); | |
85 | const vector< shared_ptr<Signal> > sigs( | |
86 | _view.session().get_signals()); | |
87 | ||
88 | QPainter painter(this); | |
89 | painter.setRenderHint(QPainter::Antialiasing); | |
90 | ||
91 | const int v_offset = _view.v_offset(); | |
92 | const bool dragging = !_drag_sigs.empty(); | |
93 | BOOST_FOREACH(const shared_ptr<Signal> s, sigs) | |
94 | { | |
95 | assert(s); | |
96 | ||
97 | const int y = s->get_v_offset() - v_offset; | |
98 | const bool highlight = !dragging && s->pt_in_label_rect( | |
99 | y, 0, w, _mouse_point); | |
100 | s->paint_label(painter, y, w, highlight); | |
101 | } | |
102 | ||
103 | painter.end(); | |
104 | } | |
105 | ||
106 | void Header::mousePressEvent(QMouseEvent *event) | |
107 | { | |
108 | assert(event); | |
109 | ||
110 | const vector< shared_ptr<Signal> > sigs( | |
111 | _view.session().get_signals()); | |
112 | ||
113 | if (event->button() & Qt::LeftButton) { | |
114 | _mouse_down_point = event->pos(); | |
115 | ||
116 | // Save the offsets of any signals which will be dragged | |
117 | BOOST_FOREACH(const shared_ptr<Signal> s, sigs) | |
118 | if (s->selected()) | |
119 | _drag_sigs.push_back( | |
120 | make_pair(s, s->get_v_offset())); | |
121 | } | |
122 | ||
123 | // Select the signal if it has been clicked | |
124 | const shared_ptr<Signal> mouse_over_signal = | |
125 | get_mouse_over_signal(event->pos()); | |
126 | if (mouse_over_signal) { | |
127 | if (mouse_over_signal->selected()) | |
128 | mouse_over_signal->select(false); | |
129 | else { | |
130 | mouse_over_signal->select(true); | |
131 | ||
132 | if (~QApplication::keyboardModifiers() & | |
133 | Qt::ControlModifier) | |
134 | _drag_sigs.clear(); | |
135 | ||
136 | // Add the signal to the drag list | |
137 | if (event->button() & Qt::LeftButton) | |
138 | _drag_sigs.push_back( | |
139 | make_pair(mouse_over_signal, | |
140 | mouse_over_signal->get_v_offset())); | |
141 | } | |
142 | } | |
143 | ||
144 | if (~QApplication::keyboardModifiers() & Qt::ControlModifier) { | |
145 | // Unselect all other signals because the Ctrl is not | |
146 | // pressed | |
147 | BOOST_FOREACH(const shared_ptr<Signal> s, sigs) | |
148 | if (s != mouse_over_signal) | |
149 | s->select(false); | |
150 | } | |
151 | ||
152 | update(); | |
153 | } | |
154 | ||
155 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
156 | { | |
157 | assert(event); | |
158 | if (event->button() == Qt::LeftButton) { | |
159 | _drag_sigs.clear(); | |
160 | _view.normalize_layout(); | |
161 | } | |
162 | } | |
163 | ||
164 | void Header::mouseMoveEvent(QMouseEvent *event) | |
165 | { | |
166 | assert(event); | |
167 | _mouse_point = event->pos(); | |
168 | ||
169 | // Move the signals if we are dragging | |
170 | if (!_drag_sigs.empty()) { | |
171 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
172 | ||
173 | for (std::list<std::pair<boost::weak_ptr<Signal>, | |
174 | int> >::iterator i = _drag_sigs.begin(); | |
175 | i != _drag_sigs.end(); i++) { | |
176 | const boost::shared_ptr<Signal> sig((*i).first); | |
177 | if (sig) { | |
178 | const int y = (*i).second + delta; | |
179 | const int y_snap = | |
180 | ((y + View::SignalSnapGridSize / 2) / | |
181 | View::SignalSnapGridSize) * | |
182 | View::SignalSnapGridSize; | |
183 | sig->set_v_offset(y_snap); | |
184 | ||
185 | // Ensure the signal is selected | |
186 | sig->select(); | |
187 | } | |
188 | ||
189 | } | |
190 | ||
191 | signals_moved(); | |
192 | } | |
193 | ||
194 | update(); | |
195 | } | |
196 | ||
197 | void Header::leaveEvent(QEvent*) | |
198 | { | |
199 | _mouse_point = QPoint(-1, -1); | |
200 | update(); | |
201 | } | |
202 | ||
203 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
204 | { | |
205 | const shared_ptr<Signal> s = get_mouse_over_signal(_mouse_point); | |
206 | ||
207 | if (!s) | |
208 | return; | |
209 | ||
210 | QMenu menu(this); | |
211 | menu.addAction(_action_set_name); | |
212 | menu.addAction(_action_set_colour); | |
213 | ||
214 | _context_signal = s; | |
215 | menu.exec(event->globalPos()); | |
216 | _context_signal.reset(); | |
217 | } | |
218 | ||
219 | void Header::on_action_set_name_triggered() | |
220 | { | |
221 | shared_ptr<view::Signal> context_signal = _context_signal; | |
222 | if (!context_signal) | |
223 | return; | |
224 | ||
225 | const QString new_label = QInputDialog::getText(this, tr("Set Name"), | |
226 | tr("Name"), QLineEdit::Normal, context_signal->get_name()); | |
227 | ||
228 | if (!new_label.isEmpty()) | |
229 | context_signal->set_name(new_label); | |
230 | } | |
231 | ||
232 | void Header::on_action_set_colour_triggered() | |
233 | { | |
234 | shared_ptr<view::Signal> context_signal = _context_signal; | |
235 | if (!context_signal) | |
236 | return; | |
237 | ||
238 | const QColor new_colour = QColorDialog::getColor( | |
239 | context_signal->get_colour(), this, tr("Set Colour")); | |
240 | ||
241 | if (new_colour.isValid()) | |
242 | context_signal->set_colour(new_colour); | |
243 | } | |
244 | ||
245 | void Header::on_signals_moved() | |
246 | { | |
247 | update(); | |
248 | } | |
249 | ||
250 | ||
251 | } // namespace view | |
252 | } // namespace pv |