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-rw-r--r--MatrixWebView.cpp74
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1/*
2 * MatrixWebView.cpp
3 *
4 * MatrixWebView Class inherted from QWebView to support additional
5 * functionalities such as signal handler
6 *
7 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
8 *
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the
20 * distribution.
21 *
22 * Neither the name of Texas Instruments Incorporated nor the names of
23 * its contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38*/
39
40#include "MatrixWebView.h"
41#include <sys/types.h>
42#include <sys/socket.h>
43#include <unistd.h>
44#include <QApplication>
45
46int MatrixWebView::sigtermFd[2];
47
48MatrixWebView::MatrixWebView(QWidget* parent)
49 : QWebView(parent)
50{
51 if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigtermFd))
52 qFatal("Couldn't create TERM socketpair");
53
54 snTerm = new QSocketNotifier(sigtermFd[1], QSocketNotifier::Read, this);
55 connect(snTerm, SIGNAL(activated(int)), this, SLOT(handleSigTerm()));
56}
57
58void MatrixWebView::termSignalHandler(int)
59{
60 char a = 1;
61 if(::write(sigtermFd[0], &a, sizeof(a))){}
62}
63
64void MatrixWebView::handleSigTerm()
65{
66 snTerm->setEnabled(false);
67 char tmp;
68 if(::read(sigtermFd[1], &tmp, sizeof(tmp))){}
69
70 // do Qt stuff
71 qApp->quit();
72
73 snTerm->setEnabled(true);
74}