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#!/usr/bin/env bash
#
# Behavior:
# Userscript for qutebrowser which views the current web page in mpv using
# sensible mpv-flags. While viewing the page in MPV, all <video>, <embed>,
# and <object> tags in the original page are temporarily removed. Clicking on
# such a removed video restores the respective video.
#
# In order to use this script, just start it using `spawn --userscript` from
# qutebrowser. I recommend using an alias, e.g. put this in the
# [alias]-section of qutebrowser.conf:
#
# mpv = spawn --userscript /path/to/view_in_mpv
#
# Background:
# Most of my machines are too slow to play youtube videos using html5, but
# they work fine in mpv (and mpv has further advantages like video scaling,
# etc). Of course, I don't want the video to be played (or even to be
# downloaded) twice — in MPV and in qwebkit. So I often close the tab after
# opening it in mpv. However, I actually want to keep the rest of the page
# (comments and video suggestions), i.e. only the videos should disappear
# when mpv is started. And that's precisely what the present script does.
#
# Thorsten Wißmann, 2015 (thorsten` on Libera Chat)
# Any feedback is welcome!
set -e
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
}
MPV_COMMAND=${MPV_COMMAND:-mpv}
# Warning: spaces in single flags are not supported
MPV_FLAGS=${MPV_FLAGS:- --force-window --quiet --keep-open=yes --ytdl}
IFS=" " read -r -a video_command <<< "$MPV_COMMAND $MPV_FLAGS"
js() {
cat <<EOF
function descendantOfTagName(child, ancestorTagName) {
// tells whether child has some (proper) ancestor
// with the tag name ancestorTagName
while (child.parentNode != null) {
child = child.parentNode;
if (typeof child.tagName === 'undefined') break;
if (child.tagName.toUpperCase() == ancestorTagName.toUpperCase()) {
return true;
}
}
return false;
}
var App = {};
var all_videos = [];
all_videos.push.apply(all_videos, document.getElementsByTagName("video"));
all_videos.push.apply(all_videos, document.getElementsByTagName("object"));
all_videos.push.apply(all_videos, document.getElementsByTagName("embed"));
App.backup_videos = Array();
App.all_replacements = Array();
for (i = 0; i < all_videos.length; i++) {
var video = all_videos[i];
if (descendantOfTagName(video, "object")) {
// skip tags that are contained in an object, because we hide
// the object anyway.
continue;
}
var replacement = document.createElement("div");
replacement.innerHTML = "
<p style=\\"margin-bottom: 0.5em\\">
Opening page with:
<span style=\\"font-family: monospace;\\">${video_command[*]}</span>
</p>
<p>
In order to restore this particular video
<a style=\\"font-weight: bold;
color: white;
background: transparent;
cursor: pointer;
\\"
onClick=\\"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];
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 -w main $(printjs)" >> "$QUTE_FIFO"
msg info "Opening $QUTE_URL with mpv"
"${video_command[@]}" "$@" "$QUTE_URL"
|
