diff options
| -rwxr-xr-x | dactyl.sh | 32 |
1 files changed, 17 insertions, 15 deletions
@@ -82,8 +82,6 @@ function menu { get_cursor_row() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo ${ROW#*[}; } key_input() { local key - ESC=$(printf "\033") - # read 3 characters, 1 at a time for (( i=0; i < 3; ++i)); do read -s -n1 input 2>/dev/null >&2 @@ -105,6 +103,18 @@ function menu { if [[ $key = $ESC[A ]]; then echo up; fi; if [[ $key = $ESC[B ]]; then echo down; fi; } + function cursorUp() { printf "$ESC[A"; } + function clearRow() { printf "$ESC[2K\r"; } + function eraseMenu() { + cursor_to $lastrow + clearRow + numHeaderRows=$(printf "$header" | wc -l) + numOptions=${#options[@]} + numRows=$(($numHeaderRows + $numOptions)) + for ((i=0; i<$numRows; ++i)); do + cursorUp; clearRow; + done + } # initially print empty new lines (scroll down if at bottom of screen) for opt in "${options[@]}"; do printf "\n"; done @@ -112,16 +122,15 @@ function menu { # determine current screen position for overwriting the options local lastrow=`get_cursor_row` local startrow=$(($lastrow - $#)) + local selected=0 # ensure cursor and input echoing back on upon a ctrl+c during read -s trap "cursor_blink_on; stty echo; printf '\n'; exit" 2 cursor_blink_off - local selected=0 - - # print options by overwriting the last lines - function drawOptions() { - local idx=0 + while true; do + # print options by overwriting the last lines + local idx=0 for opt in "${options[@]}"; do cursor_to $(($startrow + $idx)) # add an index to the option @@ -133,10 +142,6 @@ function menu { fi ((idx++)) done - } - - while true; do - drawOptions # user key control input=$(key_input) @@ -147,7 +152,6 @@ function menu { # If a digit is encountered, consider it a selection (if within range) if [ $input -lt $(($# + 1)) ]; then selected=$(($input - 1)) - drawOptions break fi ;; @@ -158,10 +162,8 @@ function menu { esac done - # cursor position back to normal - cursor_to $lastrow + eraseMenu cursor_blink_on - echo return $selected } |