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