#!/bin/bash

# MAIN MENU
function mainMenu() {
  # select your position
  local CHOICE=$(zenity --list \
    --title="Tutorial Video Player" --radiolist --width=400 --height=300 \
    --text "Select where you wnat the video to display" \
    --radiolist --column "Select" --column "Value" --column="Position Options" \
    TRUE large "Large Center" \
    FASLE left "Left Corner" \
    FASLE right "Right Corner" \
    FASLE topleft "Top Left Corner" \
    FASLE topright "Top Right Corner" \
    FASLE quit "Quit" \
    --hide-column=2 2>/dev/null)

  # alwasy first stop videos playing
  stopVideo

  # triger the choise acction
  case $CHOICE in
    "large")
      showLarge
      ;;
    "left")
      showLeft
      ;;
    "right")
      showRight
      ;;
    "topleft")
      showTopleft
      ;;
    "topright")
      showTopright
      ;;
    "quit") quitProgram ;;
  esac

  # menu loop
  mainMenu
}

# show large center video
function showLarge() {
  mplayer -zoom -ontop -noborder -nosound -vo gl:nomanyfmts \
    -vf mirror -xy 2 tv:// -tv device=/dev/video4 -screen 1 &
}

# show video on bottom left
function showLeft() {
  mplayer -zoom -ontop -noborder -nosound -vo gl:nomanyfmts \
    -geometry 320x240+30+780 -vf mirror tv:// -tv device=/dev/video4 -screen 1 &
}

# show video on bottom right
function showRight() {
  mplayer -zoom -ontop -noborder -nosound -vo gl:nomanyfmts \
    -geometry 320x240+1570+780 -vf mirror tv:// -tv device=/dev/video4 -screen 1 &
}

# show video on top left
function showTopleft() {
  mplayer -zoom -ontop -noborder -nosound -vo gl:nomanyfmts \
    -geometry 320x240+30+30 -vf mirror tv:// -tv device=/dev/video4 -screen 1 &
}

# show video on top right
function showTopright() {
  mplayer -zoom -ontop -noborder -nosound -vo gl:nomanyfmts \
    -geometry 320x240+1570+30 -vf mirror tv:// -tv device=/dev/video4 -screen 1 &
}

# show video on top right
function quitProgram() {
  stopVideo
  # end loop
  exit 0;
}

# stop videos playing
function stopVideo() {
  ps aux | grep mplayer | awk '{print $2}' | xargs kill
  sleep 1
}

# start program
mainMenu