Rework signaling mechanism for trace repainting
[pulseview.git] / pv / widgets / decodermenu.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2013 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, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include <cassert>
21
22 #include <libsigrokdecode/libsigrokdecode.h>
23
24 #include "decodermenu.hpp"
25
26 namespace pv {
27 namespace widgets {
28
29 DecoderMenu::DecoderMenu(QWidget *parent, bool first_level_decoder) :
30         QMenu(parent),
31         mapper_(this)
32 {
33         GSList *l = g_slist_sort(g_slist_copy(
34                 (GSList*)srd_decoder_list()), decoder_name_cmp);
35         for (; l; l = l->next) {
36                 const srd_decoder *const d = (srd_decoder*)l->data;
37                 assert(d);
38
39                 const bool have_channels = (d->channels || d->opt_channels) != 0;
40                 if (first_level_decoder == have_channels) {
41                         QAction *const action =
42                                 addAction(QString::fromUtf8(d->name));
43                         action->setData(qVariantFromValue(l->data));
44                         mapper_.setMapping(action, action);
45                         connect(action, SIGNAL(triggered()),
46                                 &mapper_, SLOT(map()));
47                 }
48         }
49         g_slist_free(l);
50
51         connect(&mapper_, SIGNAL(mapped(QObject*)),
52                 this, SLOT(on_action(QObject*)));
53 }
54
55 int DecoderMenu::decoder_name_cmp(const void *a, const void *b)
56 {
57         return strcmp(((const srd_decoder*)a)->name,
58                 ((const srd_decoder*)b)->name);
59 }
60
61 void DecoderMenu::on_action(QObject *action)
62 {
63         assert(action);
64         srd_decoder *const dec =
65                 (srd_decoder*)((QAction*)action)->data().value<void*>();
66         assert(dec);
67
68         decoder_selected(dec);
69 }
70
71 }  // namespace widgets
72 }  // namespace pv