readd img preview

lib/file_preview.sh

@@ -6,7 +6,7 @@ if [ -d "$1" ]; then
 elif [ "$category" = text ]; then
     (bat -p --color=always "$1" || cat "$1") 2>/dev/null | head -1000
 elif [ "$category" = image ]; then
-    img2txt "$1"
+    command -v ueberzug 2&>/dev/null && bash $OMZ/lib/img_preview.sh "$1"|| img2txt "$1"
 else 
     echo $1 is a $category file
 fi

lib/get_cursor.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+# 用于在<tab>行为发生时获取当前的光标位置
+
+exec < /dev/tty
+oldstty=$(stty -g)
+stty raw -echo min 0
+echo -en "\033[6n" > /dev/tty
+IFS=';' read -r -d R -a pos
+stty $oldstty
+row=$((${pos[0]:2} - 1))
+col=$((${pos[1]} - 1))
+echo "export row=$row" > $OMZ/cache/cursor
+echo "export col=$col" >> $OMZ/cache/cursor

lib/img_preview.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+declare -r -x DEFAULT_PREVIEW_POSITION="right"
+declare -r -x UEBERZUG_FIFO="$(mktemp --dry-run --suffix "fzf-$$-ueberzug")"
+declare -r -x PREVIEW_ID="preview"
+
+function start_ueberzug {
+    mkfifo "${UEBERZUG_FIFO}"
+    <"${UEBERZUG_FIFO}" \
+        ueberzug layer --parser bash --silent &
+    3>"${UEBERZUG_FIFO}" \
+        exec
+}
+
+function finalise {
+    3>&- \
+        exec
+    &>/dev/null \
+        rm "${UEBERZUG_FIFO}"
+    &>/dev/null \
+        kill $(jobs -p)
+    killall ueberzug
+}
+
+function draw_preview {
+    source $OMZ/cache/cursor
+    X=$(($COLUMNS / 2 + 2))
+    Y=$((row + 2))
+    if [ $Y -gt $((LINES - 11)) ]; then
+        Y=$((LINES - 11))
+    fi
+
+    >"${UEBERZUG_FIFO}" declare -A -p cmd=( \
+        [action]=add [identifier]="${PREVIEW_ID}" \
+        [x]="${X}" [y]="${Y}" \
+        [width]="$(($COLUMNS / 2 - 2))" [height]="10" \
+        [scaler]=forced_cover [scaling_position_x]=0.5 [scaling_position_y]=0.5 \
+        [path]="${@}")
+}
+
+trap finalise EXIT
+start_ueberzug
+draw_preview $*
+sleep 999999

plugins/fzf-tab/fzf-tab.zsh

@@ -211,6 +211,7 @@ fzf-tab-debug() {
 }
 
 fzf-tab-complete() {
+  bash $OMZ/lib/get_cursor.sh
   # this name must be ugly to avoid clashes
   local -i _ftb_continue=1 _ftb_continue_last=0 _ftb_accept=0 ret=0
   # hide the cursor until finishing completion, so that users won't see cursor up and down