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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 | using namespace boost; | |
38 | using namespace std; | |
39 | ||
40 | namespace pv { | |
41 | namespace view { | |
42 | ||
43 | Header::Header(View &parent) : | |
44 | MarginWidget(parent) | |
45 | { | |
46 | setMouseTracking(true); | |
47 | ||
48 | connect(&_view.session(), SIGNAL(signals_changed()), | |
49 | this, SLOT(on_signals_changed())); | |
50 | ||
51 | connect(&_view, SIGNAL(signals_moved()), | |
52 | this, SLOT(on_signals_moved())); | |
53 | } | |
54 | ||
55 | shared_ptr<Trace> Header::get_mouse_over_trace(const QPoint &pt) | |
56 | { | |
57 | const int w = width(); | |
58 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
59 | ||
60 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
61 | { | |
62 | assert(t); | |
63 | if (t->pt_in_label_rect(0, w, pt)) | |
64 | return t; | |
65 | } | |
66 | ||
67 | return shared_ptr<Trace>(); | |
68 | } | |
69 | ||
70 | void Header::clear_selection() | |
71 | { | |
72 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
73 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) { | |
74 | assert(t); | |
75 | t->select(false); | |
76 | } | |
77 | ||
78 | update(); | |
79 | } | |
80 | ||
81 | void Header::paintEvent(QPaintEvent*) | |
82 | { | |
83 | const int w = width(); | |
84 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
85 | ||
86 | QPainter painter(this); | |
87 | painter.setRenderHint(QPainter::Antialiasing); | |
88 | ||
89 | const bool dragging = !_drag_traces.empty(); | |
90 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
91 | { | |
92 | assert(t); | |
93 | ||
94 | const bool highlight = !dragging && t->pt_in_label_rect( | |
95 | 0, w, _mouse_point); | |
96 | t->paint_label(painter, w, highlight); | |
97 | } | |
98 | ||
99 | painter.end(); | |
100 | } | |
101 | ||
102 | void Header::mousePressEvent(QMouseEvent *event) | |
103 | { | |
104 | assert(event); | |
105 | ||
106 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
107 | ||
108 | if (event->button() & Qt::LeftButton) { | |
109 | _mouse_down_point = event->pos(); | |
110 | ||
111 | // Save the offsets of any signals which will be dragged | |
112 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
113 | if (t->selected()) | |
114 | _drag_traces.push_back( | |
115 | make_pair(t, t->get_v_offset())); | |
116 | } | |
117 | ||
118 | // Select the signal if it has been clicked | |
119 | const shared_ptr<Trace> mouse_over_trace = | |
120 | get_mouse_over_trace(event->pos()); | |
121 | if (mouse_over_trace) { | |
122 | if (mouse_over_trace->selected()) | |
123 | mouse_over_trace->select(false); | |
124 | else { | |
125 | mouse_over_trace->select(true); | |
126 | ||
127 | if (~QApplication::keyboardModifiers() & | |
128 | Qt::ControlModifier) | |
129 | _drag_traces.clear(); | |
130 | ||
131 | // Add the signal to the drag list | |
132 | if (event->button() & Qt::LeftButton) | |
133 | _drag_traces.push_back( | |
134 | make_pair(mouse_over_trace, | |
135 | mouse_over_trace->get_v_offset())); | |
136 | } | |
137 | } | |
138 | ||
139 | if (~QApplication::keyboardModifiers() & Qt::ControlModifier) { | |
140 | // Unselect all other signals because the Ctrl is not | |
141 | // pressed | |
142 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
143 | if (t != mouse_over_trace) | |
144 | t->select(false); | |
145 | } | |
146 | ||
147 | selection_changed(); | |
148 | update(); | |
149 | } | |
150 | ||
151 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
152 | { | |
153 | assert(event); | |
154 | if (event->button() == Qt::LeftButton) { | |
155 | _drag_traces.clear(); | |
156 | _view.normalize_layout(); | |
157 | } | |
158 | } | |
159 | ||
160 | void Header::mouseMoveEvent(QMouseEvent *event) | |
161 | { | |
162 | assert(event); | |
163 | _mouse_point = event->pos(); | |
164 | ||
165 | // Move the signals if we are dragging | |
166 | if (!_drag_traces.empty()) { | |
167 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
168 | ||
169 | for (std::list<std::pair<boost::weak_ptr<Trace>, | |
170 | int> >::iterator i = _drag_traces.begin(); | |
171 | i != _drag_traces.end(); i++) { | |
172 | const boost::shared_ptr<Trace> trace((*i).first); | |
173 | if (trace) { | |
174 | const int y = (*i).second + delta; | |
175 | const int y_snap = | |
176 | ((y + View::SignalSnapGridSize / 2) / | |
177 | View::SignalSnapGridSize) * | |
178 | View::SignalSnapGridSize; | |
179 | trace->set_v_offset(y_snap); | |
180 | ||
181 | // Ensure the trace is selected | |
182 | trace->select(); | |
183 | } | |
184 | ||
185 | } | |
186 | ||
187 | signals_moved(); | |
188 | } | |
189 | ||
190 | update(); | |
191 | } | |
192 | ||
193 | void Header::leaveEvent(QEvent*) | |
194 | { | |
195 | _mouse_point = QPoint(-1, -1); | |
196 | update(); | |
197 | } | |
198 | ||
199 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
200 | { | |
201 | const shared_ptr<Trace> t = get_mouse_over_trace(_mouse_point); | |
202 | ||
203 | if (t) | |
204 | t->create_context_menu(this)->exec(event->globalPos()); | |
205 | } | |
206 | ||
207 | void Header::on_signals_changed() | |
208 | { | |
209 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
210 | BOOST_FOREACH(shared_ptr<Trace> t, traces) { | |
211 | assert(t); | |
212 | connect(t.get(), SIGNAL(text_changed()), this, SLOT(update())); | |
213 | } | |
214 | } | |
215 | ||
216 | void Header::on_signals_moved() | |
217 | { | |
218 | update(); | |
219 | } | |
220 | ||
221 | ||
222 | } // namespace view | |
223 | } // namespace pv |