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image: Added method to get the terminal size using an escape sequence.

This commit is contained in:
Dylan Araps 2018-06-05 11:50:55 +10:00
parent b7ba768787
commit f847b05e32
1 changed files with 20 additions and 7 deletions
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27
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@ -3361,7 +3361,7 @@ image_backend() {
return return
} }
get_term_size get_window_size
((term_width < 1)) && { ((term_width < 1)) && {
to_ascii "Image: Failed to find terminal window size." to_ascii "Image: Failed to find terminal window size."
@ -3530,11 +3530,11 @@ get_w3m_img_path() {
err "Image: w3m-img wasn't found on your system" err "Image: w3m-img wasn't found on your system"
} }
get_term_size() { get_window_size() {
# This functions gets the current window size in # This functions gets the current window size in
# pixels. # pixels.
# #
# We first try to use the escape sequence "\044[14t" # We first try to use the escape sequence "\033[14t"
# to get the terminal window size in pixels. If this # to get the terminal window size in pixels. If this
# fails we then fallback to using "xdotool" or other # fails we then fallback to using "xdotool" or other
# programs. # programs.
@ -3606,14 +3606,27 @@ get_term_size() {
term_width="${term_width:-0}" term_width="${term_width:-0}"
} }
get_image_size() {
# This functions determines the size to make get_term_size() {
# the thumbnail image. # Get the terminal size in cells.
read -r lines columns <<< "$(stty size)" printf '%b' '\e[18t'
IFS=';t' read -d t -t 0.05 -sra term_cells
lines="${term_cells[1]}"
columns="${term_cells[2]}"
# Fallback to stty if above sequence isn't supported.
[[ -z "$lines" || -z "$columns" ]] && \
read -r lines columns <<< "$(stty size)"
# Calculate font size. # Calculate font size.
font_width="$((term_width / columns))" font_width="$((term_width / columns))"
font_height="$((term_height / lines))" font_height="$((term_height / lines))"
}
get_image_size() {
# This functions determines the size to make the thumbnail image.
get_term_size
case "$image_size" in case "$image_size" in
"auto") "auto")