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Implement generalised image support
Support Kitty and SIXEL input and output with grid-resident image layers, history and copy-mode integration, text fallback rendering, and damage-rectangle redraws. Consolidate the image work through 250f96b4b onto the redraw-damage-rectangles-new base, excluding the superseded redraw implementation and its historical merges. The original history is preserved in backup/4902-image-support-before-master-rebase-20261003.
This commit is contained in:
Michael Grant
51
tools/generate-image-diacritics.sh
Executable file
51
tools/generate-image-diacritics.sh
Executable file
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#!/bin/sh
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# Generate the Unicode diacritic table used by Kitty image placeholders.
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#
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# Input must be UnicodeData.txt from Unicode 6.0.0:
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# https://www.unicode.org/Public/6.0.0/ucd/UnicodeData.txt
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# SHA-256: 90b45b777346bef027556f9c6cb3ea5d7d745bd60d6762855c08d8a22d34f771
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#
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# The selection follows the public Kitty graphics protocol: nonspacing marks
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# with canonical combining class 230, NSM bidi class, no decomposition, minus
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# characters which may be combined or normalized in ways unsuitable for a
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# row or column index.
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if [ "$#" -ne 1 ]; then
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echo "usage: $0 UnicodeData.txt" >&2
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exit 1
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fi
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awk -F ';' '
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BEGIN {
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omit["0300"] = omit["0301"] = omit["0302"] = 1
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omit["0303"] = omit["0304"] = omit["0306"] = 1
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omit["0307"] = omit["0308"] = omit["0309"] = 1
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omit["030A"] = omit["030B"] = omit["030C"] = 1
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omit["030F"] = omit["0311"] = omit["0313"] = 1
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omit["0314"] = omit["0342"] = omit["0653"] = 1
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omit["0654"] = 1
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}
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$3 == "Mn" && $4 == "230" && $5 == "NSM" && $6 == "" && !omit[$1] {
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point[++count] = $1
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}
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END {
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if (count != 297) {
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printf "expected 297 diacritics, found %u\n", count > "/dev/stderr"
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exit 1
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}
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print "static const uint32_t kitty_diacritics[] = {"
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for (i = 1; i <= count; i++) {
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if ((i - 1) % 8 == 0)
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printf "\t"
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printf "0x%s", point[i]
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if (i != count)
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printf ","
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if (i == count || i % 8 == 0)
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printf "\n"
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else
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printf " "
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}
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print "};"
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}
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' "$1"
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104
tools/image-edge-test.sh
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104
tools/image-edge-test.sh
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#!/bin/sh
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# Compact visual check for image subcell geometry and layering. Run inside a
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# tmux pane on Kitty or a SIXEL terminal; it needs at least 90 columns/24 rows.
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if [ -z "$TMUX" ]; then
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echo "Run this script inside tmux." >&2
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exit 1
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fi
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columns=$(tput cols 2>/dev/null || echo 0)
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lines=$(tput lines 2>/dev/null || echo 0)
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if [ "$columns" -lt 90 ] || [ "$lines" -lt 24 ]; then
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echo "This test needs at least 90 columns and 24 rows." >&2
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exit 1
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fi
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at()
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{
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printf '\033[%s;%sH' "$1" "$2"
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}
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kitty()
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{
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printf '\033_G%s\033\\' "$1"
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}
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kitty_solid()
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{
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id=$1
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rgba=$2
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payload=$(i=0; while [ "$i" -lt 256 ]; do
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printf "$rgba"
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i=$((i + 1))
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done | base64 | tr -d '\n')
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kitty "a=t,q=2,f=32,s=16,v=16,i=$id;$payload"
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}
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sixel_folder()
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{
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printf '\033P0;1q"1;1;26;26#0;2;50;50;50#1;2;0;0;0#2;2;49;49;49#3;2;33;33;33#4;2;47;47;47#5;2;44;44;44#6;2;48;48;48#2?O?C!5?S!4?__?_?__$#0?_wW!5KGwo_-#0?~~!8?!10@BB}w$#2!12?a_A?A?A?A??@E-#0?~~!7?KK~~KK!7?~~$#2!9?K!6?K-#0?F^[owowowowowowowowooS^F$#2?G!10?@@!7?G??G-\033\\'
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}
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feature_info=$(tmux display-message -p \
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'term=#{client_termname} features=#{client_termfeatures} cells=#{client_cell_width}x#{client_cell_height}')
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printf '\033[2J\033[H\033[?25l'
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at 1 2
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printf 'tmux image edge-case check'
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at 2 2
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printf '%s' "$feature_info"
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kitty_solid 201 '\377\000\000\377'
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kitty_solid 202 '\000\377\000\377'
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kitty_solid 203 '\000\000\377\377'
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# The 26-pixel folder occupies whole grid cells, but its visible right and
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# bottom edges must remain partial rather than stretching to those boundaries.
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at 4 2
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printf '1. partial SIXEL: folder should be the same size as direct output'
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at 4 72
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sixel_folder
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# Chawan emits X/Y for its image padding. The red square must begin slightly
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# below and right of the [img] anchor, never over it.
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at 8 2
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printf '2. Kitty X/Y: RED begins below/right of the [img] anchor'
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at 8 72
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printf '[img]'
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at 9 72
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kitty 'a=p,q=2,C=1,i=201,p=1,x=0,y=0,w=16,h=16,c=3,r=2,X=6,Y=6'
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# Positive Kitty z overlays text and other lower z images; negative z is
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# below text. The shared red/blue edge makes any wrong order obvious.
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at 12 2
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printf '3. Kitty z: BLUE covers RED; GREEN stays behind TEXT'
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at 12 72
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printf 'TEXT'
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at 12 72
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kitty 'a=p,q=2,C=1,i=202,p=2,x=0,y=0,w=16,h=16,c=4,r=2,z=-1'
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at 14 72
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kitty 'a=p,q=2,C=1,i=201,p=3,x=0,y=0,w=16,h=16,c=4,r=2,z=1'
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at 14 74
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kitty 'a=p,q=2,C=1,i=203,p=4,x=0,y=0,w=16,h=16,c=4,r=2,z=2'
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# SIXEL is temporal: a later image covers text, while later text destroys the
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# affected image cells. Both results should match on Kitty and SIXEL output.
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at 18 2
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printf '4. SIXEL after text: folder covers FOLDER'
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at 18 72
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printf 'FOLDER'
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at 18 72
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sixel_folder
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at 21 2
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printf '5. SIXEL before text: TEXT WINS, no folder remnant'
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at 21 72
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sixel_folder
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at 21 72
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printf 'TEXT WINS'
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at 23 2
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printf 'Take one screenshot, then press Enter to return to the shell.'
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printf '\033[?25h'
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IFS= read -r _image_edge_reply
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109
tools/image-visual-test.sh
Executable file
109
tools/image-visual-test.sh
Executable file
@@ -0,0 +1,109 @@
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#!/bin/sh
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# One-screen visual check for tmux image input and layering. Run this inside a
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# tmux pane attached to Kitty, WezTerm, Microsoft Terminal, or a basic terminal.
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if [ -z "$TMUX" ]; then
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echo "Run this script inside tmux." >&2
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exit 1
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fi
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columns=$(tput cols 2>/dev/null || echo 0)
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lines=$(tput lines 2>/dev/null || echo 0)
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if [ "$columns" -lt 72 ] || [ "$lines" -lt 23 ]; then
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echo "This test needs at least 72 columns and 23 rows." >&2
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exit 1
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fi
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at()
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{
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printf '\033[%s;%sH' "$1" "$2"
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}
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kitty()
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{
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printf '\033_G%s\033\\' "$1"
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}
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# Transmit a 16x16 solid RGBA texture. A one-pixel texture is unsuitable here
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# because Kitty filters its transparent texture border into scaled edges.
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kitty_solid()
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{
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id=$1
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rgba=$2
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payload=$(i=0; while [ "$i" -lt 256 ]; do
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printf "$rgba"
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i=$((i + 1))
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done | base64 | tr -d '\n')
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kitty "a=t,q=2,f=32,s=16,v=16,i=$id;$payload"
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}
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# A small 26x26 transparent SIXEL folder, used by the supplied bptato tests.
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sixel_folder()
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{
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printf '\033P0;1q"1;1;26;26#0;2;50;50;50#1;2;0;0;0#2;2;49;49;49#3;2;33;33;33#4;2;47;47;47#5;2;44;44;44#6;2;48;48;48#2?O?C!5?S!4?__?_?__$#0?_wW!5KGwo_-#0?~~!8?!10@BB}w$#2!12?a_A?A?A?A??@E-#0?~~!7?KK~~KK!7?~~$#2!9?K!6?K-#0?F^[owowowowowowowowooS^F$#2?G!10?@@!7?G??G-\033\\'
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}
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feature_info=$(tmux display-message -p \
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'term=#{client_termname} features=#{client_termfeatures} cells=#{client_cell_width}x#{client_cell_height}')
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printf '\033[2J\033[H\033[?25l'
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at 1 2
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printf 'tmux image visual check'
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at 2 2
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printf '%s' "$feature_info"
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# Red is placed after its text at a positive Kitty z-index, so it must cover
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# the text. Green is placed below the text at a negative Kitty z-index.
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kitty_solid 101 '\377\000\000\377'
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kitty_solid 102 '\000\377\000\377'
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kitty_solid 103 '\000\000\377\377'
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kitty_solid 104 '\377\000\000\177'
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at 4 2
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printf '1. positive Kitty z: RED must hide TEXT UNDER at right'
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at 4 62
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printf 'TEXT UNDER'
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at 4 60
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kitty 'a=p,q=2,C=1,i=101,p=1,x=1,y=1,w=14,h=14,c=18,r=2,z=1'
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at 7 2
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printf '2. negative Kitty z: GREEN remains behind TEXT ON TOP'
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at 7 60
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kitty 'a=p,q=2,C=1,i=102,p=2,x=1,y=1,w=14,h=14,c=18,r=2,z=-1'
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at 7 62
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printf 'TEXT ON TOP'
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at 10 2
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printf '3. Kitty z overlap: RED left, BLUE on top at right'
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at 11 55
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kitty 'a=p,q=2,C=1,i=101,p=3,x=1,y=1,w=14,h=14,c=18,r=3,z=1'
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at 11 64
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kitty 'a=p,q=2,C=1,i=103,p=4,x=1,y=1,w=14,h=14,c=9,r=3,z=2'
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at 15 2
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printf '4. alpha: half-transparent RED, dithered on SIXEL'
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at 15 60
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kitty 'a=p,q=2,C=1,i=104,p=5,x=1,y=1,w=14,h=14,c=18,r=2,z=1'
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# SIXEL semantics are temporal: later text destroys a SIXEL image, while a
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# later SIXEL image appears over existing text.
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at 18 2
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printf '5. SIXEL after text: folder covers FOLDER at right'
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at 18 65
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printf 'FOLDER'
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at 18 65
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sixel_folder
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at 21 2
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printf '6. SIXEL before text: no folder remains behind TEXT WINS'
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at 21 65
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sixel_folder
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at 21 65
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printf 'TEXT WINS'
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at 23 2
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printf 'Take one screenshot, then press Enter to return to the shell.'
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at 23 66
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printf '\033[?25h'
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IFS= read -r _image_visual_reply
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1
tools/sixel-ruler.six
Normal file
1
tools/sixel-ruler.six
Normal file
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|
||||
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|
||||
44
tools/sixel-scroll-region-test.sh
Executable file
44
tools/sixel-scroll-region-test.sh
Executable file
@@ -0,0 +1,44 @@
|
||||
#!/bin/sh
|
||||
|
||||
# Visual test for sixel-region-scrolling: does this terminal actually move
|
||||
# SIXEL pixels along with tmux's own scroll-region escapes (DECSTBM/DECSLRM
|
||||
# + IND/RI/RIN), or does tmux need to fall back to redrawing the image on
|
||||
# every scroll?
|
||||
#
|
||||
# There is no way to query a terminal for this, so it has to be judged by
|
||||
# eye. Run this from inside the tmux session you want to test (attached
|
||||
# from whichever terminal emulator you're checking), and watch the
|
||||
# numbered colour bands in the floating pane while the counter below it
|
||||
# scrolls slowly. Run it once with the option on, once with it off, and
|
||||
# compare:
|
||||
#
|
||||
# - "off" is the known-good baseline: tmux redraws the whole image every
|
||||
# scroll, so the bands must stay perfectly aligned with the counter no
|
||||
# matter what the terminal does on its own.
|
||||
# - "on" trusts the terminal to have moved the pixels itself. If it
|
||||
# looks identical to "off", this terminal is fine. If a band freezes,
|
||||
# duplicates, tears, or drifts out of sync with the counter, this
|
||||
# terminal does not scroll SIXEL regions correctly and
|
||||
# sixel-region-scrolling should stay off for it.
|
||||
#
|
||||
# Usage: sh tools/sixel-scroll-region-test.sh [on|off]
|
||||
|
||||
set -eu
|
||||
cd "$(dirname "$0")/.."
|
||||
|
||||
MODE=${1:-on}
|
||||
case "$MODE" in
|
||||
on|off) ;;
|
||||
*) echo "usage: $0 [on|off]" >&2; exit 1 ;;
|
||||
esac
|
||||
|
||||
tmux set -s sixel-region-scrolling "$MODE"
|
||||
tmux set -as terminal-features ',*:sixel'
|
||||
|
||||
echo "Testing with sixel-region-scrolling=$MODE. Watch the coloured bands" >&2
|
||||
echo "in the floating pane - they should stay locked to the counter." >&2
|
||||
sleep 2
|
||||
|
||||
PANE=$(tmux new-pane -d -x 24 -y 22 -PF '#{pane_id}' \
|
||||
"cat '$(pwd)/tools/sixel-ruler.six'; for i in \$(seq 1 50); do echo line \$i; sleep 0.3; done; echo done - press enter; read _")
|
||||
tmux select-pane -t "$PANE"
|
||||
Reference in New Issue
Block a user