clock.sh

   1 #!/usr/bin/env bash
   2
   3 IMG=$1                        # optional image file; exit when written
   4
   5 (
   6     HRLN=100
   7     MNLN=195
   8     SCLN=195
   9     R=215
  10     ## drawing a clock face
  11     echo "drawingarea1:translate 10000 220 220"
  12     echo "drawingarea1:set_line_cap 10000 round"
  13     echo "drawingarea1:set_source_rgba 10000 black"
  14     echo "drawingarea1:arc 10000 0 0 $R 0 360"
  15     echo "drawingarea1:fill 10000"
  16     # date
  17     echo "drawingarea1:set_font_face 10000 normal bold"
  18     echo "drawingarea1:set_font_size 10000 25"
  19     echo "drawingarea1:set_source_rgba 10000 white"
  20     echo "drawingarea1:move_to 10000 0 30"
  21     echo "drawingarea1:rel_move_for 10010 n Today"
  22     echo "drawingarea1:show_text 10020 Today"
  23     # hour hand
  24     echo "drawingarea1:set_source_rgba 10000 rgba(255,255,0,.8)"
  25     echo "drawingarea1:set_dash 10000"
  26     echo "drawingarea1:set_line_width 10000 30"
  27     echo "drawingarea1:move_to 10000 0 0"
  28     echo "drawingarea1:arc 10030 0 0 $HRLN -90 -90"
  29     echo "drawingarea1:stroke 10000"
  30     # minute hand
  31     echo "drawingarea1:set_source_rgba 10000 rgba(0,255,0,.7)"
  32     echo "drawingarea1:set_dash 10000"
  33     echo "drawingarea1:set_line_width 10000 25"
  34     echo "drawingarea1:move_to 10000 0 0"
  35     echo "drawingarea1:arc 10040 0 0 $MNLN -90 -90"
  36     echo "drawingarea1:stroke 10000"
  37     # second hand
  38     echo "drawingarea1:set_source_rgba 10000 cyan"
  39     echo "drawingarea1:set_dash 10000 4 4"
  40     echo "drawingarea1:set_line_width 10000 2"
  41     echo "drawingarea1:move_to 10000 0 0"
  42     echo "drawingarea1:arc 10050 0 0 $SCLN -90 -90"
  43     echo "drawingarea1:stroke 10000"
  44     ## now turning the hands by replacing some of the commands above
  45     HR0=0
  46     MN0=0
  47     SC0=0
  48     while true; do
  49         D=`date +%F`
  50         HR=$(((`date +"%s"`/1200%72*10)+270+720))
  51         MN=$(((`date +"%s"`/20%180*2)+270+360))
  52         SC=$((((`date +"%s"`%60)*6)+270))
  53         # date and hour hand
  54         if [[ HR -ne HR0 ]]; then
  55             echo "drawingarea1:rel_move_for =10010 n $D"
  56             echo "drawingarea1:show_text =10020 $D"
  57             echo "drawingarea1:arc =10030 0 0 $HRLN $HR $HR"
  58             HR0=$H
  59         fi
  60         # minute hand
  61         if [[ MN -ne MN0 ]]; then
  62             echo "drawingarea1:arc =10040 0 0 $MNLN $MN $MN"
  63             MN0=$MN
  64         fi
  65         # second hand
  66         echo "drawingarea1:arc =10050 0 0 $SCLN $SC $SC"
  67         SC0=$SC
  68         if [ -z "$IMG" ]; then  # running clock
  69             sleep 1
  70         else                    # write image file and exit
  71             echo "drawingarea1:save $IMG"
  72             echo "_:main_quit"
  73         fi
  74     done
  75 ) | ./pipeglade -u clock.ui