diff options
Diffstat (limited to 'mac/.qutebrowser/userscripts/cast')
| -rwxr-xr-x | mac/.qutebrowser/userscripts/cast | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/mac/.qutebrowser/userscripts/cast b/mac/.qutebrowser/userscripts/cast new file mode 100755 index 0000000..ec703d5 --- /dev/null +++ b/mac/.qutebrowser/userscripts/cast @@ -0,0 +1,175 @@ +#!/usr/bin/env bash +# +# Behavior +# Userscript for qutebrowser which casts the url passed in $1 to the default +# ChromeCast device in the network using the program `castnow` +# +# Usage +# You can launch the script from qutebrowser as follows: +# spawn --userscript ${PATH_TO_FILE} {url} +# +# Then, you can control the chromecast by launching the simple command +# `castnow` in a shell which will connect to the running castnow instance. +# +# For stopping the script, issue the command `pkill -f castnow` which would +# then let the rest of the userscript execute for cleaning temporary file. +# +# Thanks +# This userscript borrows Thorsten Wißmann's javascript code from his `mpv` +# userscript. +# +# Dependencies +# - castnow, https://github.com/xat/castnow +# - youtube-dl (https://youtube-dl.org/) or a drop-in replacement such as +# yt-dlp (https://github.com/yt-dlp/yt-dlp). +# +# Configuration: +# This script looks at the optional QUTE_CAST_YTDL_PROGRAM environment +# variable (if it exists) to decide which program to use for downloading +# videos. If specified, this should be youtube-dl or a drop-in replacement +# for it. +# +# Author +# Simon Désaulniers <sim.desaulniers@gmail.com> + +if [ -z "$QUTE_FIFO" ] ; then + cat 1>&2 <<EOF +Error: $0 can not be run as a standalone script. + +It is a qutebrowser userscript. In order to use it, call it using +'spawn --userscript' as described in qute://help/userscripts.html +EOF + exit 1 +fi + +msg() { + local cmd="$1" + shift + local msg="$*" + if [ -z "$QUTE_FIFO" ] ; then + echo "$cmd: $msg" >&2 + else + echo "message-$cmd '${msg//\'/\\\'}'" >> "$QUTE_FIFO" + fi +} + +js() { +cat <<EOF + + function descendantOfTagName(child, ancestorTagName) { + // tells whether child has some (proper) ancestor + // with the tag name ancestorTagName + while (child.parentNode != null) { + child = child.parentNode; + if (typeof child.tagName === 'undefined') break; + if (child.tagName.toUpperCase() == ancestorTagName.toUpperCase()) { + return true; + } + } + return false; + } + + var App = {}; + + var all_videos = []; + all_videos.push.apply(all_videos, document.getElementsByTagName("video")); + all_videos.push.apply(all_videos, document.getElementsByTagName("object")); + all_videos.push.apply(all_videos, document.getElementsByTagName("embed")); + App.backup_videos = Array(); + App.all_replacements = Array(); + for (i = 0; i < all_videos.length; i++) { + var video = all_videos[i]; + if (descendantOfTagName(video, "object")) { + // skip tags that are contained in an object, because we hide + // the object anyway. + continue; + } + var replacement = document.createElement("div"); + replacement.innerHTML = " + <p style=\\"margin-bottom: 0.5em\\"> + The video is being cast on your ChromeCast device. + </p> + <p> + In order to restore this particular video + <a style=\\"font-weight: bold; + color: white; + background: transparent; + \\" + onClick=\\"restore_video(this, " + i + ");\\" + href=\\"javascript: restore_video(this, " + i + ")\\" + >click here</a>. + </p> + "; + replacement.style.position = "relative"; + replacement.style.zIndex = "100003000000"; + replacement.style.fontSize = "1rem"; + replacement.style.textAlign = "center"; + replacement.style.verticalAlign = "middle"; + replacement.style.height = "100%"; + replacement.style.background = "#101010"; + replacement.style.color = "white"; + replacement.style.border = "4px dashed #545454"; + replacement.style.padding = "2em"; + replacement.style.margin = "auto"; + App.all_replacements[i] = replacement; + App.backup_videos[i] = video; + video.parentNode.replaceChild(replacement, video); + } + + function restore_video(obj, index) { + obj = App.all_replacements[index]; + video = App.backup_videos[index]; + console.log(video); + obj.parentNode.replaceChild(video, obj); + } + + /** force repainting the video, thanks to: + * http://web.archive.org/web/20151029064649/https://martinwolf.org/2014/06/10/force-repaint-of-an-element-with-javascript/ + */ + var siteHeader = document.getElementById('header'); + siteHeader.style.display='none'; + siteHeader.offsetHeight; // no need to store this anywhere, the reference is enough + siteHeader.style.display='block'; + +EOF +} + +printjs() { + js | sed 's,//.*$,,' | tr '\n' ' ' +} +echo "jseval -q $(printjs)" >> "$QUTE_FIFO" + +tmpdir=$(mktemp -d) +file_to_cast=${tmpdir}/qutecast +cast_program=$(command -v castnow) + +# pick a ytdl program +for p in "$QUTE_CAST_YTDL_PROGRAM" yt-dlp youtube-dl; do + ytdl_program=$(command -v -- "$p") + [ "$ytdl_program" == "" ] || break +done + +if [[ "${cast_program}" == "" ]]; then + msg error "castnow can't be found" + exit 1 +fi +if [[ "${ytdl_program}" == "" ]]; then + msg error "youtube-dl or a drop-in replacement can't be found in PATH, and no installed program " \ + "specified in QUTE_CAST_YTDL_PROGRAM (currently \"$QUTE_CAST_YTDL_PROGRAM\")" + exit 1 +fi + +# kill any running instance of castnow +pkill -f -- "${cast_program}" + +# start youtube download in stream mode (-o -) into temporary file +"${ytdl_program}" -qo - "$1" > "${file_to_cast}" & +ytdl_pid=$! + +msg info "Casting $1" >> "$QUTE_FIFO" +# start castnow in stream mode to cast on ChromeCast +tail -F "${file_to_cast}" | ${cast_program} - + +# cleanup remaining background process and file on disk +kill ${ytdl_pid} +rm -rf "${tmpdir}" |