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vpKeyboard.cpp
1 /****************************************************************************
2  *
3  * This file is part of the ViSP software.
4  * Copyright (C) 2005 - 2017 by Inria. All rights reserved.
5  *
6  * This software is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * ("GPL") version 2 as published by the Free Software Foundation.
9  * See the file LICENSE.txt at the root directory of this source
10  * distribution for additional information about the GNU GPL.
11  *
12  * For using ViSP with software that can not be combined with the GNU
13  * GPL, please contact Inria about acquiring a ViSP Professional
14  * Edition License.
15  *
16  * See http://visp.inria.fr for more information.
17  *
18  * This software was developed at:
19  * Inria Rennes - Bretagne Atlantique
20  * Campus Universitaire de Beaulieu
21  * 35042 Rennes Cedex
22  * France
23  *
24  * If you have questions regarding the use of this file, please contact
25  * Inria at visp@inria.fr
26  *
27  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
28  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
29  *
30  * Description:
31  * Keybord management.
32  *
33  * Authors:
34  * Fabien Spindler
35  *
36  *****************************************************************************/
37 
38 
39 
40 #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
41 # include <stdio.h>
42 # include <visp3/io/vpKeyboard.h>
43 
53 vpKeyboard::vpKeyboard() : initial_settings(), new_settings()
54 {
55  init();
56 }
57 
62 {
63  end();
64 }
65 
70 int
72 {
73  int c;
74  c = ::getchar();
75  return c;
76 }
77 
83 int
85 {
86  struct timeval tv = { 0, 0 };
87  fd_set readfds;
88 
89  FD_ZERO(&readfds);
90  FD_SET(STDIN_FILENO, &readfds);
91 
92  return select(STDIN_FILENO + 1, &readfds, NULL, NULL, &tv) == 1;
93 }
94 
99 void
100 vpKeyboard::init()
101 {
102  setRawMode(true);
103 }
104 
109 void
110 vpKeyboard::end()
111 {
112  setRawMode(false);
113 }
114 
122 void
123 vpKeyboard::setRawMode(bool active)
124 {
125  if (active) {
126 
127  tcgetattr(STDIN_FILENO, &initial_settings);
128 
129  new_settings = initial_settings;
130  // cfmakeraw(&new_settings);
131  new_settings = initial_settings;
132  new_settings.c_lflag &= (unsigned int)~ICANON;
133  new_settings.c_lflag &= (unsigned int)~ECHO;
134  new_settings.c_lflag &= (unsigned int)~ISIG;
135  //new_settings.c_oflag &= (unsigned int)~NL0;
136  //new_settings.c_oflag &= (unsigned int)~CR0;
137  new_settings.c_oflag &= (unsigned int)~TAB0;
138  //new_settings.c_oflag &= (unsigned int)~BS0;
139  new_settings.c_cc[VMIN] = 1;
140  new_settings.c_cc[VTIME] = 0;
141  tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
142 
143  }
144  else {
145  tcsetattr(STDIN_FILENO, TCSANOW, &initial_settings);
146  }
147 }
148 
149 #endif // defined UNIX
int getchar()
Definition: vpKeyboard.cpp:71
int kbhit()
Definition: vpKeyboard.cpp:84