eleni.mutantstargoat.com Git - winnie/blob - src/fbdev/keyboard.cc

   1 #ifdef WINNIE_FBDEV
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 #include <fcntl.h>
   8 #include <sys/ioctl.h>
   9 #include <termios.h>
  10 #include <unistd.h>
  11
  12 #include "keyboard.h"
  13 #include "window.h"
  14 #include "wm.h"
  15
  16 struct Keyboard {
  17         int dev_fd;
  18         enum {RAW, CANONICAL} ttystate;
  19 };
  20
  21 static Keyboard *keyboard;
  22
  23 bool init_keyboard()
  24 {
  25         if(!(keyboard = (Keyboard*)malloc(sizeof *keyboard))) {
  26                 return false;
  27         }
  28
  29         keyboard->ttystate = keyboard->CANONICAL;
  30         keyboard->dev_fd = -1;
  31
  32         if((keyboard->dev_fd = open("/dev/tty", O_RDWR)) == -1) {
  33                 fprintf(stderr, "Cannot open /dev/tty : %s\n", strerror(errno));
  34                 return false;
  35         }
  36
  37         struct termios buf;
  38
  39         if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
  40                 fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
  41                 return false;
  42         }
  43
  44         buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
  45         buf.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
  46         buf.c_cflag &= ~(CSIZE | PARENB);
  47         buf.c_cflag |= CS8;
  48         buf.c_oflag &= ~(OPOST);
  49
  50         if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
  51                 return false;
  52         }
  53
  54         keyboard->ttystate = keyboard->RAW;
  55         return true;
  56 }
  57
  58 void destroy_keyboard()
  59 {
  60         struct termios buf;
  61
  62         if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
  63                 fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
  64         }
  65
  66         buf.c_lflag |= (ECHO | ICANON | IEXTEN | ISIG);
  67         buf.c_iflag |= (BRKINT | ICRNL | INPCK | ISTRIP | IXON);
  68         buf.c_cflag |= (CSIZE | PARENB);
  69         buf.c_cflag &= CS8;
  70         buf.c_oflag |= (OPOST);
  71
  72         if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
  73                 fprintf(stderr, "Cannot set the tty parameters : %s\n", strerror(errno));
  74         }
  75
  76         keyboard->ttystate = keyboard->CANONICAL;
  77
  78         if(keyboard->dev_fd != -1) {
  79                 close(keyboard->dev_fd);
  80                 keyboard->dev_fd = -1;
  81         }
  82
  83         free(keyboard);
  84 }
  85
  86 int get_keyboard_fd()
  87 {
  88         return keyboard->dev_fd;
  89 }
  90
  91 void process_keyboard_event()
  92 {
  93         char key;
  94         if(read(keyboard->dev_fd, &key, 1) < 1) {
  95                 return;
  96         }
  97
  98         if(key == 'q') {
  99                 exit(0);
 100         }
 101
 102         Window *focused_win = wm->get_focused_window();
 103         if(focused_win) {
 104                 KeyboardFuncType keyb_callback = focused_win->get_keyboard_callback();
 105                 if(keyb_callback) {
 106                         keyb_callback(focused_win, key, true); //TODO: true??
 107                 }
 108         }
 109
 110         /* TODO:
 111          * - handle system-wide key combinations (alt-tab?)
 112          * - otherwise send keypress/release to focused window
 113          */
 114 }
 115 #endif // WINNIE_FBDEV