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

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