Toggle mini player when scrolling down in Youtube
目前為
// ==UserScript==
// @name Youtube Mini Player
// @namespace feifeihang.info
// @description Toggle mini player when scrolling down in Youtube
// @include https://youtu.be/*
// @include http://youtu.be/*
// @include https://www.youtube.com/watch?*
// @include http://www.youtube.com/watch?*
// @version 5
// @grant none
// ==/UserScript==
window.addEventListener('load', function () {
(function (window, document, undefined) {
// find and keep a reference of the video player.
var player = document.querySelector('#movie_player');
var stylePlayer = '';
var video = document.querySelector('#movie_player video.video-stream');
var videoSize = {};
var controls = document.querySelector('#movie_player .ytp-chrome-bottom');
var controlsWidth;
// a flag to indicate is the mini player is toggled.
var isToggled = false;
var isTogglable = true;
var originalHeight = undefined;
window.addEventListener('scroll', function () {
if (!isTogglable) {
return false;
}
// when scrolling up to 1/3 original player height, turn off mini player.
if (isToggled && window.pageYOffset < originalHeight / 3) {
player.style = stylePlayer;
video.style.width = videoSize.width;
video.style.height = videoSize.height;
controls.style.width = controlsWidth;
isToggled = false;
return;
}
// when scrolling down to 1/3 player height, go to mini player mode.
gotoMini();
}, false);
function gotoMini() {
if (!isToggled &&
window.pageYOffset >= parseInt(player.offsetHeight, 10) / 3) {
originalHeight = parseInt(player.offsetHeight, 10);
stylePlayer = player.style.cssText;
videoSize = {
height: video.style.height,
width: video.style.width
};
controlsWidth = controls.style.width;
var top = 'top: ' + (window.innerHeight - 270) + 'px;';
var left = 'left: ' + (window.innerWidth - 400) + 'px;';
player.style = 'position: fixed; bottom: 20px; left: 20px; height: 250px;' +
'width: 350px; z-index: 9999999;' + top + left;
video.style.height = '250px';
video.style.width = '350px';
controls.style.width = '350px';
isToggled = true;
}
}
// add a mini player toggle button.
var btn = document.createElement('div');
btn.className += ' yt-uix-button yt-uix-button-size-default yt-uix-button-primary';
btn.innerHTML = 'Mini: on';
btn.style = 'line-height: 26px; height: 26px; margin-left: 5px;';
btn.onclick = function () {
if (this.innerHTML === 'Mini: on') {
this.innerHTML = 'Mini: off';
isTogglable = false;
if (isToggled) {
player.style = stylePlayer;
video.style.width = videoSize.width;
video.style.height = videoSize.height;
controls.style.width = controlsWidth;
isToggled = false;
}
}
else {
this.innerHTML = 'Mini: on';
gotoMini();
isTogglable = true;
}
}
var dom = document.querySelector('#yt-masthead-signin') ||
document.querySelector('#yt-masthead-user');
dom.appendChild(btn);
}) (window, document);
}, false);