mirror of
https://github.com/1j01/textual-paint.git
synced 2024-12-21 13:51:45 +03:00
75 lines
2.0 KiB
Bash
75 lines
2.0 KiB
Bash
#!/bin/bash
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# Clear screen
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# echo -e "\033[2J"
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clear
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TERMINAL_WALLPAPER=/home/io/Projects/textual-paint/samples/galaxies.ans
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TERMINAL_WALLPAPER_MODE=TILE
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# Draw terminal background according to mode
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if [[ $TERMINAL_WALLPAPER_MODE == "TOP_LEFT" ]]; then
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cat $TERMINAL_WALLPAPER
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else
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# Split lines of terminal background into array
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IFS=$'\n' read -d '' -r -a lines < $TERMINAL_WALLPAPER
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# Measure image size
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image_height=${#lines[@]}
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image_width=0
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for (( y=0; y<$image_height; y++ )); do
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line=${lines[$y]}
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# Have to strip ANSI escape sequences from line length
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line_length=${#line}
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filtered_line=$(sed -r "s/\x1B\[[0-9;]*[mK]//g" <<< "$line")
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line_width=${#filtered_line}
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# echo "y=$y line : $line line_length=$line_length"
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# echo "y=$y filtered line: $filtered_line line_width=$line_width"
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if [[ $line_width -gt $image_width ]]; then
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image_width=$line_width
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fi
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done
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if [[ $TERMINAL_WALLPAPER_MODE == "CENTER" ]]; then
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# Calculate offset
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terminal_width=$(tput cols)
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terminal_height=$(tput lines)
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offset_x=$(( ($terminal_width - $image_width) / 2 ))
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offset_y=$(( ($terminal_height - $image_height) / 2 ))
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# Ensure offset is positive
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if [[ $offset_x -lt 0 ]]; then offset_x=0; fi
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if [[ $offset_y -lt 0 ]]; then offset_y=0; fi
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# Draw image
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for (( i=0; i<$image_height; i++ )); do
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tput cup $(( $offset_y + $i )) $offset_x
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echo -e "${lines[$i]}"
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done
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elif [[ $TERMINAL_WALLPAPER_MODE == "TILE" ]]; then
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# Draw tiled image
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tput rmam
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setterm -linewrap off
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terminal_width=$(tput cols)
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terminal_height=$(tput lines)
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for (( y=0; y<$terminal_height; y+=$image_height )); do
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for (( x=0; x<$terminal_width; x+=$image_width )); do
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for (( i=0; i<$image_height; i++ )); do
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# Don't scroll past bottom of terminal
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if [[ $(( $y + $i + 1 )) -ge $terminal_height ]]; then
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break
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fi
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# Draw line
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tput cup $(( $y + $i )) $x
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echo -e "${lines[$i]}"
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done
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done
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done
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tput smam
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setterm -linewrap on
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fi
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fi
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# Reset cursor position
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echo -e "\033[0;0H"
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