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Copy path和弦播放器v0.1.2.html
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和弦播放器v0.1.2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title> 和弦播放器 </title>
<style>
*{
margin: 0;
padding: 0;
}
@font-face {
font-family: 'Opus';
src: url('./font/OpusChordsSansStd.otf');
}
:root {
--pub_height: 30px;
--pub_basic_width: 12px;
--chord_bar_height: 35px;
--ronum_bar_height: 25px;
--c_mod_bar_height: 20px;
}
.main-area{
margin-top: 3px;
}
#left-top-btn{
position: fixed;
}
.menu {
/*width: 15px;*/
height: 15px;
line-height: 15px;
text-align: center;
justify-content: center;
align-items: center;
border: 1px black solid;
border-radius: 2px;
}
.detail-menu{
font-size: 25px;
position: fixed;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
border: 4px rgba(40,40,40, 0.4) solid;
padding: 3px;
}
#left-top, #left-top-mirror{
width: 70px;
height: var(--pub_height);
background-color: rgb(102, 255, 255);
border: 1px rgb(40,40,40) solid;
}
#top-bar-scale, #top-bar-scale-mirror{
width: 30px;
height: var(--pub_height);
line-height: var(--pub_height);
border: 1px rgb(40,40,40) solid;
border-left: 3px black solid;
border-right: 3px black solid;
text-align: center;
}
.flex{
display: flex;
justify-content: center;
top: 0;
margin-top: 0;
}
.fixed{
display: flex;
position: fixed;
top: 3px;
left: 0;
right: 0;
margin-left:auto;
margin-right:auto;
justify-content: center;
}
.top-bar-num{
width: calc(var(--pub_basic_width) * 4 - 5px);
height: var(--pub_height);
line-height: var(--pub_height);
background-color: rgb(46, 225, 225);
border: 1px rgb(40,40,40) solid;
text-align: left;
font-weight: bold;
font-size: 20px;
padding-left: 3px;
}
.page-changer-btn{
/*width: 20px;*/
/*height: 20px;*/
}
.top-bar-remark{
width: 200px;
height: var(--pub_height);
border: 1px black solid;
background-color: black;
}
.lighter-color{
background-color: rgb(102, 275, 275);
}
input[type="file"] {
display: none;
}
.custom-file-upload {
width: 50px;
font-size: 18px;
text-align: center;
height: var(--pub_height);
line-height: var(--pub_height);
border: 1px black solid;
}
.play-icon,
.stop-icon {
}
.menu:hover,
.play-icon:hover,
.stop-icon:hover,
.page-changer-btn:hover,
.custom-file-upload:hover{
cursor: pointer;
}
.div-chord-prog-line{
display: flex;
justify-content: center;
}
.block-name{
}
.scale-name{
}
.block-name-top,
.block-name-mid,
.block-name-btm{
width: 68px;
padding-left: 2px;
line-height: var(--chord_bar_height);
background-color: rgb(102, 255, 255);
border: 1px rgb(102, 255, 255) solid;
border-left: 1px rgb(155, 155, 155) solid;
border-right: 1px rgb(155, 155, 155) solid;
text-align: left;
font-weight: bold;
font-size: 16px;
}
.block-name-top{
height: var(--chord_bar_height);
}
.block-name-mid{
height: var(--ronum_bar_height);
}
.block-name-btm{
height: var(--c_mod_bar_height);
}
.scale-name-top,
.scale-name-mid,
.scale-name-btm{
width: 30px;
border: 1px black solid;
border-left: 3px black solid;
border-right: 3px black solid;
background-color: black;
color: white;
text-align: center;
font-family: 'Opus';
}
.scale-name-top{
height: var(--chord_bar_height);
line-height: var(--chord_bar_height);
}
.scale-name-mid{
height: var(--ronum_bar_height);
line-height: var(--ronum_bar_height);
}
.scale-name-btm{
height: var(--c_mod_bar_height);
line-height: var(--c_mod_bar_height);
}
.chord-name{
}
/*和弦快鼠标悬停*/
/*.chord-name:hover{*/
/* cursor: pointer;*/
/* !*border: 3px black solid;*!*/
/*}*/
.chord-name-top,
.roman-num-name-mid,
.c-mod-name-btm{
border: 1px rgba(40,40,40,0.2) solid;
text-align: left;
padding-left: 3px;
font-family: 'Opus';
}
.chord-name-top{
height: var(--chord_bar_height);
line-height: var(--chord_bar_height);
font-weight: bold;
font-size: 18px;
}
.roman-num-name-mid{
height: var(--ronum_bar_height);
line-height: var(--ronum_bar_height);
font-size: 16px;
}
.c-mod-name-btm{
height: var(--c_mod_bar_height);
line-height: var(--c_mod_bar_height);
font-size: 12px;
}
/*解说栏*/
.right-bar-remark{
width: 200px;
font-size: 13px;
height: calc(var(--chord_bar_height) + var(--ronum_bar_height) + var(--c_mod_bar_height) + 4px);
border: 1px black solid;
background-color: black;
color: white;
font-family: 'Opus';
}
/*延迟输入*/
#delay-range-input{
width: 70px;
}
</style>
</head>
<body>
<div id="left-top-btn">
<div class="menu" onclick="show_menu();">▲</div>
<div style="height: 5px"></div>
<div class="detail-menu">
<label class="custom-file-upload">
<input type="file" id="file-uploader"/>
导入
</label>
<div style="height: 20px"></div>
<div style="display: flex;">
<div class="play-icon" onclick="play();"> ▶️ </div>
<div class="stop-icon" onclick="stop();"> ⏹ </div>
</div>
<div style="height: 30px"></div>
<div style="height: 20px; font-size: 15px;"> 翻页 </div>
<div style="display: flex;">
<div onclick="load_prev_page();" class="page-changer-btn"> ⏪ </div>
<div onclick="load_next_page();" class="page-changer-btn"> ⏩ </div>
</div>
<div style="height: 20px"></div>
<div style="height: 15px; font-size: 15px;"> 倍速播放 </div>
<div>
<select name="rate" onchange="change_audio_speed();" id="play-back-rate-select">
<option value=0.5> 0.5 </option>
<option value=0.75> 0.75 </option>
<option value=1 selected="selected"> 1 </option>
<option value=1.25> 1.25 </option>
<option value=1.5> 1.5 </option>
<option value=1.75> 1.75 </option>
<option value=2> 2 </option>
</select>
</div>
<div style="height: 20px"></div>
<div style="height: 15px; font-size: 15px;"> 延迟调整 </div>
<div>
<input id="delay-range-input" type="range" name="points" min="-100" max="100">
</div>
<div style="height: 20px"></div>
<button id="close-rmk-btn" onclick="close_rmk();">关闭注释</button>
</div>
</div>
<div class="main-area">
<div id="top-bar" class="flex">
<div id="left-top">
</div>
<div id="top-bar-scale">调</div>
<div class="top-bar-num">1</div>
<div class="top-bar-num">1</div>
<div class="top-bar-num">1</div>
<div class="top-bar-num">1</div>
<div class="top-bar-num lighter-color">2</div>
<div class="top-bar-num lighter-color">2</div>
<div class="top-bar-num lighter-color">2</div>
<div class="top-bar-num lighter-color">2</div>
<div class="top-bar-num">3</div>
<div class="top-bar-num">3</div>
<div class="top-bar-num">3</div>
<div class="top-bar-num">3</div>
<div class="top-bar-num lighter-color">4</div>
<div class="top-bar-num lighter-color">4</div>
<div class="top-bar-num lighter-color">4</div>
<div class="top-bar-num lighter-color">4</div>
<div class="top-bar-remark"></div>
</div>
</div>
<script>
/*当前页码*/
window.cur_page = 0;
window.max_page = undefined;
/*当前歌曲名称(无后缀)*/
window.cur_song_fp = undefined;
window.audio = undefined;
/*鼠标当前所在div的颜色*/
window.cur_div_color = undefined;
/*播放状态*/
window.is_playing = false;
/*当前播放所在和弦块的位置*/
window.cur_chord_bar_id = 0; /*由音乐时间决定*/
/*当前高亮所在和弦块的位置*/
window.cur_highlight_bar_id = -1;
window.chord_prog_page_arr = undefined;
/*是否显示注释*/
window.show_rmk = true;
/*在音乐播放时，记录滚动条当前位置*/
window.cur_scrollTop = undefined;
/*css信息*/
let pub_height = get_css_root_val("--pub_height");
let pub_basic_width = get_css_root_val("--pub_basic_width");
let chord_bar_height = get_css_root_val("--chord_bar_height");
let ronum_bar_height = get_css_root_val("--ronum_bar_height");
let c_mod_bar_height = get_css_root_val("--c_mod_bar_height");
/*颜色rgb信息*/
let scale_color = {
'C': "#FFC7CE",
'Db': "#f56262",
'D': "#37bdfc",
'Eb': "#be8f3c",
'E': "#DDEBF7",
'F': "#99FF33",
'F#': "#dc3e8c",
'G': "#2cc485",
'Ab': "#A6A6A6",
'A': "#b77556",
'Bb': "#88FFFF",
'B': "#e07e9d",
}
/*菜单功能*/
/*隐藏菜单*/
function hide_menu(){
let menu = document.getElementsByClassName("detail-menu")[0];
menu.style.display = "none";
}
/*显示菜单*/
function show_menu(){
let detail_menu = document.getElementsByClassName("detail-menu")[0];
let menu = document.getElementsByClassName("menu")[0];
if (menu.innerHTML === '▲') {
detail_menu.style.display = "none";
menu.innerHTML = '▼';
}
else {
detail_menu.style.display = "flex";
menu.innerHTML = '▲';
}
}
/*关闭、打开注释*/
function close_rmk(){
if (window.chord_prog_page_arr !== undefined){
let close_rmk_btn = document.getElementById("close-rmk-btn");
console.log(close_rmk_btn.innerHTML);
if (close_rmk_btn.innerHTML === '关闭注释') {
close_rmk_btn.innerHTML = "显示注释";
window.show_rmk = false;
window.chord_prog_page_arr = window.chord_prog_page_arr_without_rmk;
load_page();
if (window.cur_scrollTop !== undefined){
document.documentElement.scrollTop = window.cur_scrollTop;
}
}
else {
close_rmk_btn.innerHTML = "关闭注释";
window.show_rmk = true;
window.chord_prog_page_arr = window.chord_prog_page_arr_with_rmk;
load_page();
if (window.cur_scrollTop !== undefined){
document.documentElement.scrollTop = window.cur_scrollTop;
}
}
}
}
/*去除注释*/
function get_display_data_without_rmk(display_data){
let display_data_copy = JSON.parse(JSON.stringify(display_data))
for (let i = 0; i < display_data_copy.length; i++) {
for (let j = 0; j < display_data_copy[i].length; j++) {
for (let k = 0; k < display_data_copy[i][j]['lines'].length; k++) {
for (let l = 0; l < display_data_copy[i][j]['lines'][k]['remarks'].length; l++) {
display_data_copy[i][j]['lines'][k]['remarks'][l] = 0;
}
}
}
}
return display_data_copy;
}
/*调整音频速度*/
function change_audio_speed(){
if (window.audio !== undefined) {
let rate_select = document.getElementById("play-back-rate-select");
window.audio.playbackRate = rate_select.value;
}
}
function stop(){
window.audio.pause();
window.audio.currentTime = 0;
let play_icon = document.getElementsByClassName("play-icon")[0];
play_icon.innerHTML = '▶️';
window.is_playing = false;
window.cur_chord_bar_id = 0;
}
function play(){
let play_icon = document.getElementsByClassName("play-icon")[0];
if (window.is_playing) {
play_icon.innerHTML = '▶️';
window.is_playing = false;
window.audio.pause();
}
else {
play_icon.innerHTML = '⏸';
window.is_playing = true;
window.audio.play();
}
}
// window.audio.addEventListener("timeupdate", function (e){
// // console.log(e.path[0].currentTime);
// function high_light_cur_bar(chord_bar_id, if_highlight) {
// let bar_info = window.play_map[chord_bar_id];
// let page = bar_info['page'];
// let col_num = bar_info['col_num'];
// let index = bar_info['index'];
// if (page !== window.cur_page) {
// window.cur_page = page;
// load_page();
// }
// let cur_line = document.getElementsByClassName("div-chord-prog-line")[col_num];
// let cur_bar = cur_line.children[index+2].children[0];
// if (if_highlight) {
// cur_bar.style.backgroundColor = 'yellow';
// }
// else {
// cur_bar.style.backgroundColor = cur_bar.bg_color;
// }
// }
//
// if (e.path[0].currentTime >= window.play_map[window.cur_chord_bar_id]['end']-0.2) {
// if (window.cur_chord_bar_id < play_map.length -1) {
// window.cur_chord_bar_id += 1;
// }
// }
//
// if (window.cur_highlight_bar_id !== window.cur_chord_bar_id) {
// /*除了刚开始播放的情况，没有高亮的格子，所以不用取消*/
// if (window.cur_highlight_bar_id !== -1){
// high_light_cur_bar(window.cur_highlight_bar_id, false);
// }
// // high_light_cur_bar(window.cur_highlight_bar_id, false);
// high_light_cur_bar(window.cur_chord_bar_id, true);
// window.cur_highlight_bar_id = window.cur_chord_bar_id;
// }
// }, false);
//
// window.audio.addEventListener('ended', function () {
// let play_icon = document.getElementsByClassName("play-icon")[0];
// play_icon.innerHTML = '▶️';
// window.is_playing = false;
// window.audio.pause();
// }, false);
/*读取json文件，并加载*/
const reader = new FileReader();
const fileUploader = document.getElementById('file-uploader');
fileUploader.addEventListener('change', (event) => {
const files = event.target.files;
reader.readAsText(files[0]);
});
reader.addEventListener('load', (event) => {
if (window.audio !== undefined){
stop();
}
/*初始化一些变量*/
/*鼠标当前所在div的颜色*/
window.cur_div_color = undefined;
/*当前播放所在和弦块的位置*/
window.cur_chord_bar_id = 0; /*由音乐时间决定*/
/*当前高亮所在和弦块的位置*/
window.cur_highlight_bar_id = -1;
/*在音乐播放时，记录滚动条当前位置*/
window.cur_scrollTop = undefined;
let base = new Base64();
let result = base.decode(reader.result);
window.cur_page = 0;
let display = JSON.parse(result);
window.display = display;
/*有注释的版本*/
window.chord_prog_page_arr_with_rmk = window.display["chord_prog_page_arr"];
/*无注释的版本*/
window.chord_prog_page_arr_without_rmk = get_display_data_without_rmk(window.display["chord_prog_page_arr"]);
if (window.show_rmk){
window.chord_prog_page_arr = window.chord_prog_page_arr_with_rmk;
}
else{
window.chord_prog_page_arr = window.chord_prog_page_arr_without_rmk;
}
window.play_map = display["play_map"];
window.cur_song_fp = display['song_fp']
window.max_page = chord_prog_page_arr.length;
/*读取mp3*/
console.log("loading mp3 file: ", window.cur_song_fp)
window.audio = new Audio(window.cur_song_fp);
window.audio.addEventListener("timeupdate", function (e){
// console.log(e.path[0].currentTime);
function high_light_cur_bar(chord_bar_id, if_highlight) {
let bar_info = window.play_map[chord_bar_id];
let page = bar_info['page'];
let col_num = bar_info['col_num'];
let index = bar_info['index'];
if (page !== window.cur_page) {
window.cur_page = page;
load_page();
}
let cur_line = document.getElementsByClassName("div-chord-prog-line")[col_num];
let cur_bar = cur_line.children[index+2].children[0];
if (if_highlight) {
cur_bar.style.backgroundColor = 'yellow';
}
else {
cur_bar.style.backgroundColor = cur_bar.bg_color;
}
}
/*读取延迟*/
let delay = document.getElementById("delay-range-input");
if (e.path[0].currentTime >= window.play_map[window.cur_chord_bar_id]['end']-0.15+delay.value/100) {
if (window.cur_chord_bar_id < play_map.length -1) {
window.cur_chord_bar_id += 1;
}
}
if (window.cur_highlight_bar_id !== window.cur_chord_bar_id) {
/*除了刚开始播放的情况，没有高亮的格子，所以不用取消*/
if (window.cur_highlight_bar_id !== -1){
high_light_cur_bar(window.cur_highlight_bar_id, false);
}
// high_light_cur_bar(window.cur_highlight_bar_id, false);
high_light_cur_bar(window.cur_chord_bar_id, true);
window.cur_highlight_bar_id = window.cur_chord_bar_id;
}
/*获取当前滚动条位置*/
window.cur_scrollTop = document.documentElement.scrollTop;
}, false);
window.audio.addEventListener('ended', function () {
let play_icon = document.getElementsByClassName("play-icon")[0];
play_icon.innerHTML = '▶️';
window.is_playing = false;
window.audio.pause();
}, false);
load_page();
});
function load_page(){
let chord_prog_block_arr = window.chord_prog_page_arr[window.cur_page];
let div_main_area = document.getElementsByClassName("main-area")[0];
// console.log(div_main_area.children.length);
/*清除表头外的所有内容*/
for (let i = div_main_area.children.length-1; i > 0 ; i--) {
div_main_area.children[i].remove();
}
// console.log(div_main_area.children.length);
/*每次循环画一个block，比如前奏1-1的两行就是一个block*/
for (let i = 0; i < chord_prog_block_arr.length; i++) {
let chord_prog_block = chord_prog_block_arr[i]
let block_name = chord_prog_block['block_name'];
let lines = chord_prog_block['lines'];
/*每次循环画一行*/
for (let j = 0; j < lines.length; j++) {
let chord_info = lines[j];
let div_chord_prog_line = document.createElement("div");
div_main_area.appendChild(div_chord_prog_line);
div_chord_prog_line.className = "div-chord-prog-line";
/*左边栏*/
let div_block_name = document.createElement("div");
div_chord_prog_line.appendChild(div_block_name);
div_block_name.className = "block-name";
let div_block_name_top = document.createElement("div");
let div_block_name_mid = document.createElement("div");
let div_block_name_btm = document.createElement("div");
div_block_name.appendChild(div_block_name_top);
div_block_name.appendChild(div_block_name_mid);
div_block_name.appendChild(div_block_name_btm);
div_block_name_top.className = "block-name-top";
div_block_name_mid.className = "block-name-mid";
div_block_name_btm.className = "block-name-btm";
if (j === 0){
let span = document.createElement("span");
div_block_name_top.appendChild(span);
span.innerHTML = block_name;
adj_span_font_size(span, window.getComputedStyle(div_block_name_top).width, "10px");
div_block_name_top.style.borderTop = "1px rgb(40,40,40) solid";
}
if (j === lines.length-1) {
div_block_name_btm.style.borderBottom = "1px rgb(40,40,40) solid";
}
/*调*/
let div_scale_name = document.createElement("div");
div_chord_prog_line.appendChild(div_scale_name);
div_scale_name.className = "scale-name";
let div_scale_name_top = document.createElement("div");
let div_scale_name_mid = document.createElement("div");
let div_scale_name_btm = document.createElement("div");
div_scale_name.appendChild(div_scale_name_top);
div_scale_name.appendChild(div_scale_name_mid);
div_scale_name.appendChild(div_scale_name_btm);
div_scale_name_top.className = "scale-name-top";
div_scale_name_mid.className = "scale-name-mid";
div_scale_name_btm.className = "scale-name-btm";
div_scale_name_top.innerHTML = chord_info["scale"];
if (j === 0){
div_scale_name_top.style.borderTop = "1px rgb(40,40,40) solid";
}
if (j === lines.length-1) {
div_scale_name_btm.style.borderBottom = "1px rgb(40,40,40) solid";
}
/*画和弦块*/
let beats_count = 0; //记录和弦块总长度，不足部分使用黑色填充
for (let k = 0; k < chord_info["chord_bars"].length; k++) {
beats_count += chord_info["chord_bars"][k][0];
let div_chord_name = document.createElement("div");
div_chord_prog_line.appendChild(div_chord_name);
div_chord_name.className = "chord-name";
let div_chord_name_top = document.createElement("div");
let div_chord_name_mid = document.createElement("div");
let div_chord_name_btm = document.createElement("div");
div_chord_name.appendChild(div_chord_name_top);
div_chord_name.appendChild(div_chord_name_mid);
div_chord_name.appendChild(div_chord_name_btm);
div_chord_name_top.className = "chord-name-top";
div_chord_name_mid.className = "roman-num-name-mid";
div_chord_name_btm.className = "c-mod-name-btm";
let width = String(chord_info["chord_bars"][k][0] * parseInt(pub_basic_width) - 2 - 3) + 'px';
div_chord_name_top.style.width = width;
div_chord_name_mid.style.width = width;
div_chord_name_btm.style.width = width;
// div_chord_name_top.style.backgroundColor = scale_color[chord_info['scale']];
/*设置鼠标悬浮状态*/
div_chord_name_top.onmouseover = function (){
if (this.time_end !== undefined){
this.style.cursor = "pointer";
// window.cur_div_color = this.style.backgroundColor
this.style.backgroundColor = 'yellow';
}
}
div_chord_name_top.onmouseout = function (){
if (this.time_end !== undefined){
this.style.cursor = "auto";
// this.style.backgroundColor = window.cur_div_color;
this.style.backgroundColor = this.bg_color;
}
}
/*设置双击触发事件*/
div_chord_name_top.ondblclick = function (){
if (this.time_end !== undefined) {
// console.log(this.play_map_index);
window.cur_chord_bar_id = this.play_map_index;
let play_icon = document.getElementsByClassName("play-icon")[0];
play_icon.innerHTML = '⏸';
window.is_playing = true;
window.audio.currentTime = this.time_start - 0.5;
window.audio.play();
}
}
let span_top = document.createElement("span");
let span_mid = document.createElement("span");
let span_btm = document.createElement("span");
div_chord_name_top.appendChild(span_top);
div_chord_name_mid.appendChild(span_mid);
div_chord_name_btm.appendChild(span_btm);
span_top.innerHTML = chord_info["chord_bars"][k][1];
span_mid.innerHTML = chord_info["chord_bars"][k][2];
span_btm.innerHTML = chord_info["chord_bars"][k][3];
div_chord_name_top.style.backgroundColor = scale_color[chord_info["chord_bars"][k][4]];
adj_span_font_size(span_top, get_width(div_chord_name_top), "10px");
adj_span_font_size(span_mid, get_width(div_chord_name_mid), "10px");
adj_span_font_size(span_btm, get_width(div_chord_name_btm), "10px");
if (chord_info["chord_bars"][k][1] === '>>' || chord_info["chord_bars"][k][1] === '<<') {
div_chord_name_top.style.fontFamily = "Microsoft YaHei";
}
/*绑定位置信息*/
div_chord_name_top.page = window.cur_page;
div_chord_name_top.col_num = chord_info["col_num"];
div_chord_name_top.time_start = chord_info['time_start'][k];
div_chord_name_top.time_end = chord_info['time_end'][k];
div_chord_name_top.play_map_index = chord_info['play_map_index'][k];
div_chord_name_top.bg_color = scale_color[chord_info["chord_bars"][k][4]];
/*修改解说区域的外边框*/
/*情况1：解说区域开始*/
//解说框宽度
let w = 3
let rmk_border_style = "px red solid"
if (chord_info['remarks'][k] !== 1 && chord_info['remarks'][k] !== 0) {
/*如果只有一块解说*/
if (k === chord_info["chord_bars"].length-1 || chord_info['remarks'][k+1] !== 1) {
div_chord_name_top.style.height = String(parseInt(window.getComputedStyle(div_chord_name_top).height) - w) + "px";
div_chord_name_top.style.width = String(parseInt(window.getComputedStyle(div_chord_name_top).width) - w - w) + "px";
div_chord_name_top.style.borderTop = String(w+1)+rmk_border_style;
div_chord_name_top.style.borderLeft = String(w+1)+rmk_border_style;
div_chord_name_top.style.borderRight = String(w+1)+rmk_border_style;
div_chord_name_mid.style.width = String(parseInt(window.getComputedStyle(div_chord_name_mid).width) - w - w) + "px";
div_chord_name_mid.style.borderLeft = String(w+1)+rmk_border_style;
div_chord_name_mid.style.borderRight = String(w+1)+rmk_border_style;
div_chord_name_btm.style.height = String(parseInt(window.getComputedStyle(div_chord_name_btm).height) - w) + "px";
div_chord_name_btm.style.width = String(parseInt(window.getComputedStyle(div_chord_name_btm).width) - w - w) + "px";
div_chord_name_btm.style.borderBottom = String(w+1)+rmk_border_style;
div_chord_name_btm.style.borderLeft = String(w+1)+rmk_border_style;
div_chord_name_btm.style.borderRight = String(w+1)+rmk_border_style;
}/*后面还有解说*/
else{
div_chord_name_top.style.height = String(parseInt(window.getComputedStyle(div_chord_name_top).height) - w) + "px";
div_chord_name_top.style.width = String(parseInt(window.getComputedStyle(div_chord_name_top).width) - w) + "px";
div_chord_name_top.style.borderTop = String(w+1)+rmk_border_style;
div_chord_name_top.style.borderLeft = String(w+1)+rmk_border_style;
div_chord_name_mid.style.width = String(parseInt(window.getComputedStyle(div_chord_name_mid).width) - w) + "px";
div_chord_name_mid.style.borderLeft = String(w+1)+rmk_border_style;
div_chord_name_btm.style.height = String(parseInt(window.getComputedStyle(div_chord_name_btm).height) - w) + "px";
div_chord_name_btm.style.width = String(parseInt(window.getComputedStyle(div_chord_name_btm).width) - w) + "px";
div_chord_name_btm.style.borderBottom = String(w+1)+rmk_border_style;
div_chord_name_btm.style.borderLeft = String(w+1)+rmk_border_style;
}
}/*情况2：解说区域中间*/
else if (chord_info['remarks'][k] === 1) {
/*如果后面没1了*/
if (k === chord_info["chord_bars"].length-1 || chord_info['remarks'][k+1] !== 1) {
div_chord_name_top.style.height = String(parseInt(window.getComputedStyle(div_chord_name_top).height) - w) + "px";
div_chord_name_top.style.width = String(parseInt(window.getComputedStyle(div_chord_name_top).width) - w) + "px";
div_chord_name_top.style.borderTop = String(w+1)+rmk_border_style;
div_chord_name_top.style.borderRight = String(w+1)+rmk_border_style;
div_chord_name_mid.style.width = String(parseInt(window.getComputedStyle(div_chord_name_mid).width) - w) + "px";
div_chord_name_mid.style.borderRight = String(w+1)+rmk_border_style;
div_chord_name_btm.style.height = String(parseInt(window.getComputedStyle(div_chord_name_btm).height) - w) + "px";
div_chord_name_btm.style.width = String(parseInt(window.getComputedStyle(div_chord_name_btm).width) - w) + "px";
div_chord_name_btm.style.borderBottom = String(w+1)+rmk_border_style;
div_chord_name_btm.style.borderRight = String(w+1)+rmk_border_style;
}
else{
div_chord_name_top.style.height = String(parseInt(window.getComputedStyle(div_chord_name_top).height) - w) + "px";
div_chord_name_top.style.borderTop = String(w+1)+rmk_border_style;
div_chord_name_btm.style.height = String(parseInt(window.getComputedStyle(div_chord_name_btm).height) - w) + "px";
div_chord_name_btm.style.borderBottom = String(w+1)+rmk_border_style;
}
}
}
/*若长度不足，则使用黑色块填充*/
if (beats_count < 64) {
let div_chord_name = document.createElement("div");
div_chord_prog_line.appendChild(div_chord_name);
div_chord_name.className = "chord-name";
let div_chord_name_top = document.createElement("div");
let div_chord_name_mid = document.createElement("div");
let div_chord_name_btm = document.createElement("div");
div_chord_name.appendChild(div_chord_name_top);
div_chord_name.appendChild(div_chord_name_mid);
div_chord_name.appendChild(div_chord_name_btm);
div_chord_name_top.className = "chord-name-top";
div_chord_name_mid.className = "roman-num-name-mid";
div_chord_name_btm.className = "c-mod-name-btm";
let width = String((64-beats_count) * parseInt(pub_basic_width) - 2 -3) + 'px';
div_chord_name_top.style.width = width;
div_chord_name_mid.style.width = width;
div_chord_name_btm.style.width = width;
div_chord_name_top.style.backgroundColor = 'black';
div_chord_name_mid.style.backgroundColor = 'black';
div_chord_name_btm.style.backgroundColor = 'black';
div_chord_name_top.style.borderBottom = "1px black solid";
div_chord_name_top.style.borderRight = "1px black solid";
div_chord_name_mid.style.borderTop = "1px black solid";
div_chord_name_mid.style.borderBottom = "1px black solid";
div_chord_name_mid.style.borderRight = "1px black solid";
div_chord_name_btm.style.borderTop = "1px black solid";
div_chord_name_btm.style.borderRight = "1px black solid";
}
/*右侧解说栏*/
let div_right_bar_remark = document.createElement("div");
div_chord_prog_line.appendChild(div_right_bar_remark);
div_right_bar_remark.className = "right-bar-remark";
let final_text = "";
/*辅助判断是不是这行只有一条注释*/
let is_not_first_rmk = false
for (let k = 0; k < chord_info['remarks'].length; k++) {
if (chord_info['remarks'][k] !== 0 && chord_info['remarks'][k] !== 1
&& chord_info['remarks'][k] !== "") {
if (is_not_first_rmk) {
final_text += '； \n';
}
final_text += chord_info['remarks'][k]
is_not_first_rmk = true
}
}
div_right_bar_remark.innerHTML = final_text;
}
}
}
function load_next_page(){
if (window.cur_page < window.max_page-1) {
window.cur_page++;
load_page()
}
}
function load_prev_page(){
if (window.cur_page > 0) {
window.cur_page--;
load_page()
}
}
/*获取css中:root声明的变量*/
function get_css_root_val(val_str_name){
const allStyle = getComputedStyle(document.documentElement);
return String(allStyle.getPropertyValue(val_str_name)).trim();
}
/*计算元素的真实宽度，一般用于宽度不确定的span*/
function get_width(element){
let rect = element.getBoundingClientRect();
return rect.right - rect.left;
}
/*计算元素的真实高度*/
function get_height(element){
let rect = element.getBoundingClientRect();
return rect.top - rect.bottom;
}
/*改变元素背景颜色的alpha*/
function changeAlpha(element, aph_delta) {
let colors = getComputedStyle(element).getPropertyValue('background-color');
colors = colors.split(', ');
colors[0] = parseFloat(colors[0].split('(')[1]);
colors[1] = parseFloat(colors[1]);
colors[2] = parseFloat(colors[2]);
//Correct missing alpha
if (colors.length === 3) {
colors[3] = 1;
}
//Apply new style
colors[3] = parseFloat(colors[3]) + aph_delta;
colors = 'rgba(' + colors.join(',') + ')';
element.style.backgroundColor = colors;
}
/*调整span中内容的字体，使得span的宽度不超过指定宽度，切记在span中填入文本后调用*/
function adj_span_font_size(span_element, max_width, min_font_size){
span_element.style.fontSize = window.getComputedStyle(span_element).fontSize;
while ((parseInt(get_width(span_element)) > 0.75 * parseInt(max_width)) &&
(parseInt(span_element.style.fontSize) > parseInt(min_font_size))) {
// console.log(window.getComputedStyle(span_element).fontSize);
// console.log(get_width(span_element));
span_element.style.fontSize = String(parseInt(span_element.style.fontSize) - 2) + "px";
}
if (parseInt(get_width(span_element)) > parseInt(max_width)) {
span_element.style.letterSpacing = "-1px";
}
}
function Base64() {
// private property
_keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
// public method for encoding
this.encode = function (input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = _utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output +
_keyStr.charAt(enc1) + _keyStr.charAt(enc2) +
_keyStr.charAt(enc3) + _keyStr.charAt(enc4);
}
return output;
}
// public method for decoding
this.decode = function (input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = _keyStr.indexOf(input.charAt(i++));
enc2 = _keyStr.indexOf(input.charAt(i++));
enc3 = _keyStr.indexOf(input.charAt(i++));
enc4 = _keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = _utf8_decode(output);
return output;
}
// private method for UTF-8 encoding
_utf8_encode = function (string) {
string = string.replace(/\r\n/g,"\n");