From 5a0c67f86a033599c708fd49f3675aa5995cfc75 Mon Sep 17 00:00:00 2001
From: Fabien Spindler <Fabien.Spindler@inria.fr>
Date: Thu, 6 Jul 2023 10:45:35 +0200
Subject: [PATCH] Port vpKeyboard on windows

---
 example/tools/keyboard.cpp               | 11 ------
 modules/io/include/visp3/io/vpKeyboard.h |  9 +++--
 modules/io/src/tools/vpKeyboard.cpp      | 50 +++++++++++++++++++++---
 3 files changed, 50 insertions(+), 20 deletions(-)

diff --git a/example/tools/keyboard.cpp b/example/tools/keyboard.cpp
index 350909da07..f240607785 100644
--- a/example/tools/keyboard.cpp
+++ b/example/tools/keyboard.cpp
@@ -31,7 +31,6 @@
  * Description:
  * Example of keyboard management.
  *
- *
 *****************************************************************************/
 
 /*!
@@ -43,10 +42,7 @@
 #include <visp3/core/vpConfig.h>
 #include <visp3/core/vpDebug.h>
 
-#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 #include <iostream>
-#include <signal.h>
-#include <stdio.h>
 
 #include <visp3/io/vpKeyboard.h>
 
@@ -77,10 +73,3 @@ int main()
 
   return EXIT_SUCCESS;
 }
-#else
-int main()
-{
-  std::cout << "vpKeyboard class works only on unix..." << std::endl;
-  return EXIT_SUCCESS;
-}
-#endif
diff --git a/modules/io/include/visp3/io/vpKeyboard.h b/modules/io/include/visp3/io/vpKeyboard.h
index c538706309..583f902987 100644
--- a/modules/io/include/visp3/io/vpKeyboard.h
+++ b/modules/io/include/visp3/io/vpKeyboard.h
@@ -43,12 +43,13 @@
 
 #include <visp3/core/vpConfig.h>
 
-#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
-
 #include <iostream>
+
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 #include <stdlib.h>
 #include <termios.h>
 #include <unistd.h>
+#endif // defined UNIX
 
 /*!
 
@@ -88,6 +89,7 @@ class VISP_EXPORT vpKeyboard
   int kbhit();
   int getchar();
 
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 private:
   void init();
   void end();
@@ -95,8 +97,7 @@ class VISP_EXPORT vpKeyboard
   void setRawMode(bool active);
 
   struct termios initial_settings, new_settings;
-};
-
 #endif // defined UNIX
+};
 
 #endif
diff --git a/modules/io/src/tools/vpKeyboard.cpp b/modules/io/src/tools/vpKeyboard.cpp
index ddfe98986c..9625871d7f 100644
--- a/modules/io/src/tools/vpKeyboard.cpp
+++ b/modules/io/src/tools/vpKeyboard.cpp
@@ -33,9 +33,13 @@
  *
 *****************************************************************************/
 
-#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 #include <stdio.h>
+
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 #include <sys/select.h>
+#elif defined(_WIN32)
+#include <conio.h>
+#endif
 #include <visp3/io/vpKeyboard.h>
 
 /*!
@@ -46,12 +50,27 @@
 /*!
   Activates the raw mode to read keys in an non blocking way.
 */
-vpKeyboard::vpKeyboard() : initial_settings(), new_settings() { init(); }
+vpKeyboard::vpKeyboard()
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
+  : initial_settings(), new_settings()
+{
+  init();
+}
+#else
+{}
+#endif
+
+
 
 /*!
   Stops the raw mode.
 */
-vpKeyboard::~vpKeyboard() { end(); }
+vpKeyboard::~vpKeyboard()
+{
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
+  end();
+#endif 
+}
 
 /*!
 
@@ -59,9 +78,16 @@ vpKeyboard::~vpKeyboard() { end(); }
 */
 int vpKeyboard::getchar()
 {
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
   int c;
   c = ::getchar();
   return c;
+#elif defined(_WIN32)
+  return _getch();
+#else
+  std::cout << "vpKeyboard class is not supported by your system!" << std::endl;
+  return 0;
+#endif
 }
 
 /*!
@@ -71,6 +97,7 @@ int vpKeyboard::getchar()
 */
 int vpKeyboard::kbhit()
 {
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__))) 
   struct timeval tv = {0, 0};
   fd_set readfds;
 
@@ -78,19 +105,32 @@ int vpKeyboard::kbhit()
   FD_SET(STDIN_FILENO, &readfds);
 
   return select(STDIN_FILENO + 1, &readfds, NULL, NULL, &tv) == 1;
+#elif defined(_WIN32)
+  return _kbhit();
+#else
+  std::cout << "vpKeyboard class is not supported by your system!" << std::endl;
+  return 0;
+#endif
 }
 
+#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)))
 /*!
 
   Activates the raw mode to read keys in an non blocking way.
 */
-void vpKeyboard::init() { setRawMode(true); }
+void vpKeyboard::init()
+{ 
+  setRawMode(true);
+}
 
 /*!
 
   Stops the raw mode.
 */
-void vpKeyboard::end() { setRawMode(false); }
+void vpKeyboard::end()
+{
+  setRawMode(false);
+}
 
 /*!
   Turns on/off the 'raw' mode.