Periodic tty locker

main.c

#include <libttymultiplex.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/wait.h>

const static struct tym_super_position_rectangle fullscreen_coordinates = {
  .edge[TYM_RECT_TOP_LEFT].type[TYM_P_CHARFIELD].axis[TYM_AXIS_VERTICAL].value.integer = 1,
  .edge[TYM_RECT_BOTTOM_RIGHT].type[TYM_P_RATIO].axis = {
    [TYM_AXIS_HORIZONTAL].value.real = 1,
    [TYM_AXIS_VERTICAL].value.real = 1,
  },
};

const static struct tym_super_position_rectangle message_coordinates = {
  .edge[TYM_RECT_BOTTOM_RIGHT].type[TYM_P_RATIO].axis[TYM_AXIS_HORIZONTAL].value.real = 1,
  .edge[TYM_RECT_BOTTOM_RIGHT].type[TYM_P_CHARFIELD].axis[TYM_AXIS_VERTICAL].value.integer = 1,
};

bool exec_in_pane(int pane, char*const argv[]){
  if(tym_freeze() == -1){
    fprintf(stderr, "tym_freeze failed");
    return 1;
  }
  pid_t newpid = fork();
  if(newpid == -1){
    tym_init();
    return false;
  }
  if(newpid){
    tym_init();
    return true;
  }
  if(tym_pane_set_env(pane) == -1)
    return -1;
  tym_zap();
  execvp(argv[0], argv);
}

int main(){
  tym_init();
  int main_pane = tym_pane_create(&fullscreen_coordinates);
  int message_pane = tym_pane_create(&message_coordinates);
  int message_fd = tym_pane_get_slavefd(message_pane);
  //tym_pane_set_flag(message_pane, TYM_PF_DISALLOW_FOCUS, true);
  if(main_pane==-1 || message_pane==-1){
    fprintf(stderr, "tym_pane_create failed\n");
    return 1;
  }
  if(!exec_in_pane(main_pane, (char*const[]){"bash",0})){
    fprintf(stderr, "exec_in_pane failed\n");
    return 1;
  }
  bool locked = false;
  int time = 0;
  tym_pane_set_flag(main_pane, TYM_PF_FOCUS, true);
  while(1){
    int ret = waitpid(-1,0,WNOHANG);
    if(ret == -1){
      if(errno == EINTR)
        continue;
      if(errno != EAGAIN)
        break;
    }
    sleep(1);
    int d = locked ? 5 : 10;
    int remaining = d - time;
    time += 1;
    if(!remaining){
      locked = !locked;
      if(locked){
        // Not working, bug
        //tym_pane_set_flag(main_pane, TYM_PF_FOCUS, false);
        tym_pane_set_flag(main_pane, TYM_PF_DISALLOW_FOCUS, true);
        // workaround
        tym_pane_set_flag(message_pane, TYM_PF_FOCUS, true);
      }else{
        tym_pane_set_flag(main_pane, TYM_PF_DISALLOW_FOCUS, false);
        tym_pane_set_flag(main_pane, TYM_PF_FOCUS, true);
      }
      time = 0;
    }
    dprintf(message_fd, "\r\x1b[2JPane will %s in: %d", locked ? "unlock" : "lock", remaining);
  }
  tym_shutdown();
  return 0;
}

makefile

# https://github.com/Daniel-Abrecht/libttymultiplex
LDLIBS=-lttymultiplex
all: main