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

   1 /*
   2 winnie - an experimental window system
   3
   4 Copyright (C) 2013 Eleni Maria Stea
   5
   6 This program is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 Author: Eleni Maria Stea <elene.mst@gmail.com>
  20 */
  21
  22 #ifdef WINNIE_FBDEV
  23 #include <errno.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include <fcntl.h>
  29 #include <sys/ioctl.h>
  30 #include <termios.h>
  31 #include <unistd.h>
  32
  33 #include "keyboard.h"
  34 #include "shalloc.h"
  35 #include "window.h"
  36 #include "winnie.h"
  37 #include "wm.h"
  38
  39 struct Keyboard {
  40         int dev_fd;
  41         enum {RAW, CANONICAL} ttystate;
  42 };
  43
  44 static Keyboard *keyboard;
  45
  46 bool init_keyboard()
  47 {
  48         if(!(keyboard = (Keyboard*)sh_malloc(sizeof *keyboard))) {
  49                 return false;
  50         }
  51
  52         get_subsys()->keyboard_offset = (int)((char*)keyboard - (char*)get_pool());
  53
  54         keyboard->ttystate = keyboard->CANONICAL;
  55         keyboard->dev_fd = -1;
  56
  57         if((keyboard->dev_fd = open("/dev/tty", O_RDWR)) == -1) {
  58                 fprintf(stderr, "Cannot open /dev/tty : %s\n", strerror(errno));
  59                 return false;
  60         }
  61
  62         struct termios buf;
  63
  64         if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
  65                 fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
  66                 return false;
  67         }
  68
  69         buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
  70         buf.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
  71         buf.c_cflag &= ~(CSIZE | PARENB);
  72         buf.c_cflag |= CS8;
  73         buf.c_oflag &= ~(OPOST);
  74
  75         if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
  76                 return false;
  77         }
  78
  79         keyboard->ttystate = keyboard->RAW;
  80         return true;
  81 }
  82
  83 void destroy_keyboard()
  84 {
  85         struct termios buf;
  86
  87         if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
  88                 fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
  89         }
  90
  91         buf.c_lflag |= (ECHO | ICANON | IEXTEN | ISIG);
  92         buf.c_iflag |= (BRKINT | ICRNL | INPCK | ISTRIP | IXON);
  93         buf.c_cflag |= (CSIZE | PARENB);
  94         buf.c_cflag &= CS8;
  95         buf.c_oflag |= (OPOST);
  96
  97         if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
  98                 fprintf(stderr, "Cannot set the tty parameters : %s\n", strerror(errno));
  99         }
 100
 101         keyboard->ttystate = keyboard->CANONICAL;
 102
 103         if(keyboard->dev_fd != -1) {
 104                 close(keyboard->dev_fd);
 105                 keyboard->dev_fd = -1;
 106         }
 107
 108         sh_free(keyboard);
 109 }
 110
 111 int get_keyboard_fd()
 112 {
 113         return keyboard->dev_fd;
 114 }
 115
 116 void process_keyboard_event()
 117 {
 118         char key;
 119         if(read(keyboard->dev_fd, &key, 1) < 1) {
 120                 return;
 121         }
 122
 123         if(key == 'q') {
 124                 exit(0);
 125         }
 126
 127         Window *focused_win = wm->get_focused_window();
 128         if(focused_win) {
 129                 KeyboardFuncType keyb_callback = focused_win->get_keyboard_callback();
 130                 if(keyb_callback) {
 131                         keyb_callback(focused_win, key, true); //TODO: true??
 132                 }
 133         }
 134
 135         /* TODO:
 136          * - handle system-wide key combinations (alt-tab?)
 137          * - otherwise send keypress/release to focused window
 138          */
 139 }
 140 #endif // WINNIE_FBDEV