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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 | _dragging(false) | |
46 | { | |
47 | setMouseTracking(true); | |
48 | ||
49 | connect(&_view.session(), SIGNAL(signals_changed()), | |
50 | this, SLOT(on_signals_changed())); | |
51 | ||
52 | connect(&_view, SIGNAL(signals_moved()), | |
53 | this, SLOT(on_signals_moved())); | |
54 | } | |
55 | ||
56 | shared_ptr<Trace> Header::get_mouse_over_trace(const QPoint &pt) | |
57 | { | |
58 | const int w = width(); | |
59 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
60 | ||
61 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
62 | { | |
63 | assert(t); | |
64 | if (t->pt_in_label_rect(0, w, pt)) | |
65 | return t; | |
66 | } | |
67 | ||
68 | return shared_ptr<Trace>(); | |
69 | } | |
70 | ||
71 | void Header::clear_selection() | |
72 | { | |
73 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
74 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) { | |
75 | assert(t); | |
76 | t->select(false); | |
77 | } | |
78 | ||
79 | update(); | |
80 | } | |
81 | ||
82 | void Header::paintEvent(QPaintEvent*) | |
83 | { | |
84 | const int w = width(); | |
85 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
86 | ||
87 | QPainter painter(this); | |
88 | painter.setRenderHint(QPainter::Antialiasing); | |
89 | ||
90 | const bool dragging = !_drag_traces.empty(); | |
91 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
92 | { | |
93 | assert(t); | |
94 | ||
95 | const bool highlight = !dragging && t->pt_in_label_rect( | |
96 | 0, w, _mouse_point); | |
97 | t->paint_label(painter, w, highlight); | |
98 | } | |
99 | ||
100 | painter.end(); | |
101 | } | |
102 | ||
103 | void Header::mousePressEvent(QMouseEvent *event) | |
104 | { | |
105 | assert(event); | |
106 | ||
107 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
108 | ||
109 | if (event->button() & Qt::LeftButton) { | |
110 | _mouse_down_point = event->pos(); | |
111 | ||
112 | // Save the offsets of any signals which will be dragged | |
113 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
114 | if (t->selected()) | |
115 | _drag_traces.push_back( | |
116 | make_pair(t, t->get_v_offset())); | |
117 | } | |
118 | ||
119 | // Select the signal if it has been clicked | |
120 | const shared_ptr<Trace> mouse_over_trace = | |
121 | get_mouse_over_trace(event->pos()); | |
122 | if (mouse_over_trace) { | |
123 | if (mouse_over_trace->selected()) | |
124 | mouse_over_trace->select(false); | |
125 | else { | |
126 | mouse_over_trace->select(true); | |
127 | ||
128 | if (~QApplication::keyboardModifiers() & | |
129 | Qt::ControlModifier) | |
130 | _drag_traces.clear(); | |
131 | ||
132 | // Add the signal to the drag list | |
133 | if (event->button() & Qt::LeftButton) | |
134 | _drag_traces.push_back( | |
135 | make_pair(mouse_over_trace, | |
136 | mouse_over_trace->get_v_offset())); | |
137 | } | |
138 | } | |
139 | ||
140 | if (~QApplication::keyboardModifiers() & Qt::ControlModifier) { | |
141 | // Unselect all other signals because the Ctrl is not | |
142 | // pressed | |
143 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
144 | if (t != mouse_over_trace) | |
145 | t->select(false); | |
146 | } | |
147 | ||
148 | selection_changed(); | |
149 | update(); | |
150 | } | |
151 | ||
152 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
153 | { | |
154 | assert(event); | |
155 | if (event->button() == Qt::LeftButton) { | |
156 | _dragging = false; | |
157 | _drag_traces.clear(); | |
158 | _view.normalize_layout(); | |
159 | } | |
160 | } | |
161 | ||
162 | void Header::mouseMoveEvent(QMouseEvent *event) | |
163 | { | |
164 | assert(event); | |
165 | _mouse_point = event->pos(); | |
166 | ||
167 | if (!(event->buttons() & Qt::LeftButton)) | |
168 | return; | |
169 | ||
170 | if ((event->pos() - _mouse_down_point).manhattanLength() < | |
171 | QApplication::startDragDistance()) | |
172 | return; | |
173 | ||
174 | // Move the signals if we are dragging | |
175 | if (!_drag_traces.empty()) | |
176 | { | |
177 | _dragging = true; | |
178 | ||
179 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
180 | ||
181 | for (std::list<std::pair<boost::weak_ptr<Trace>, | |
182 | int> >::iterator i = _drag_traces.begin(); | |
183 | i != _drag_traces.end(); i++) { | |
184 | const boost::shared_ptr<Trace> trace((*i).first); | |
185 | if (trace) { | |
186 | const int y = (*i).second + delta; | |
187 | const int y_snap = | |
188 | ((y + View::SignalSnapGridSize / 2) / | |
189 | View::SignalSnapGridSize) * | |
190 | View::SignalSnapGridSize; | |
191 | trace->set_v_offset(y_snap); | |
192 | ||
193 | // Ensure the trace is selected | |
194 | trace->select(); | |
195 | } | |
196 | ||
197 | } | |
198 | ||
199 | signals_moved(); | |
200 | } | |
201 | ||
202 | update(); | |
203 | } | |
204 | ||
205 | void Header::leaveEvent(QEvent*) | |
206 | { | |
207 | _mouse_point = QPoint(-1, -1); | |
208 | update(); | |
209 | } | |
210 | ||
211 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
212 | { | |
213 | const shared_ptr<Trace> t = get_mouse_over_trace(_mouse_point); | |
214 | ||
215 | if (t) | |
216 | t->create_context_menu(this)->exec(event->globalPos()); | |
217 | } | |
218 | ||
219 | void Header::on_signals_changed() | |
220 | { | |
221 | const vector< shared_ptr<Trace> > traces(_view.get_traces()); | |
222 | BOOST_FOREACH(shared_ptr<Trace> t, traces) { | |
223 | assert(t); | |
224 | connect(t.get(), SIGNAL(text_changed()), this, SLOT(update())); | |
225 | } | |
226 | } | |
227 | ||
228 | void Header::on_signals_moved() | |
229 | { | |
230 | update(); | |
231 | } | |
232 | ||
233 | ||
234 | } // namespace view | |
235 | } // namespace pv |