created libwinnie (library), winnie (the server application) and clients

[winnie] / libwinnie / src / fbdev / keyboard.cc

diff --git a/libwinnie/src/fbdev/keyboard.cc b/libwinnie/src/fbdev/keyboard.cc
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+/*
+winnie - an experimental window system
+
+Copyright (C) 2013 Eleni Maria Stea
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Author: Eleni Maria Stea <elene.mst@gmail.com>
+*/
+
+#ifdef WINNIE_FBDEV
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "keyboard.h"
+#include "shalloc.h"
+#include "window.h"
+#include "winnie.h"
+#include "wm.h"
+
+struct Keyboard {
+       int dev_fd;
+       enum {RAW, CANONICAL} ttystate;
+};
+
+static Keyboard *keyboard;
+
+bool init_keyboard()
+{
+       if(!(keyboard = (Keyboard*)sh_malloc(sizeof *keyboard))) {
+               return false;
+       }
+
+       get_subsys()->keyboard_offset = (int)((char*)keyboard - (char*)get_pool());
+
+       keyboard->ttystate = keyboard->CANONICAL;
+       keyboard->dev_fd = -1;
+
+       if((keyboard->dev_fd = open("/dev/tty", O_RDWR)) == -1) {
+               fprintf(stderr, "Cannot open /dev/tty : %s\n", strerror(errno));
+               return false;
+       }
+
+       struct termios buf;
+
+       if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
+               fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
+               return false;
+       }
+
+       buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
+       buf.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+       buf.c_cflag &= ~(CSIZE | PARENB);
+       buf.c_cflag |= CS8;
+       buf.c_oflag &= ~(OPOST);
+
+       if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
+               return false;
+       }
+
+       keyboard->ttystate = keyboard->RAW;
+       return true;
+}
+
+void destroy_keyboard()
+{
+       struct termios buf;
+
+       if(tcgetattr(keyboard->dev_fd, &buf) < 0) {
+               fprintf(stderr, "Cannot get the tty parameters : %s\n", strerror(errno));
+       }
+
+       buf.c_lflag |= (ECHO | ICANON | IEXTEN | ISIG);
+       buf.c_iflag |= (BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+       buf.c_cflag |= (CSIZE | PARENB);
+       buf.c_cflag &= CS8;
+       buf.c_oflag |= (OPOST);
+
+       if(tcsetattr(keyboard->dev_fd, TCSAFLUSH, &buf) < 0) {
+               fprintf(stderr, "Cannot set the tty parameters : %s\n", strerror(errno));
+       }
+
+       keyboard->ttystate = keyboard->CANONICAL;
+
+       if(keyboard->dev_fd != -1) {
+               close(keyboard->dev_fd);
+               keyboard->dev_fd = -1;
+       }
+
+       sh_free(keyboard);
+}
+
+int get_keyboard_fd()
+{
+       return keyboard->dev_fd;
+}
+
+void process_keyboard_event()
+{
+       char key;
+       if(read(keyboard->dev_fd, &key, 1) < 1) {
+               return;
+       }
+
+       if(key == 'q') {
+               exit(0);
+       }
+
+       Window *focused_win = wm->get_focused_window();
+       if(focused_win) {
+               KeyboardFuncType keyb_callback = focused_win->get_keyboard_callback();
+               if(keyb_callback) {
+                       keyb_callback(focused_win, key, true); //TODO: true??
+               }
+       }
+
+       /* TODO:
+        * - handle system-wide key combinations (alt-tab?)
+        * - otherwise send keypress/release to focused window
+        */
+}
+#endif // WINNIE_FBDEV