Library: Classes for SakuraDanmaku
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.greasyfork.org/scripts/454443/1122392/SakuraDanmakuClasses.js
// @name SakuraDanmakuClasses
// @namespace https://muted.top/
// @version 0.9.1
// @description Classes for SakuraDanmaku
// @author MUTED64
class BilibiliDanmaku {
static #EP_API_BASE = "https://api.bilibili.com/pgc/view/web/season";
static #DANMAKU_API_BASE = "https://api.bilibili.com/x/v1/dm/list.so";
static #KEYWORD_API_BASE =
"https://api.bilibili.com/x/web-interface/search/type?search_type=media_bangumi";
constructor(keyword, episode) {
this.keyword = keyword;
this.episode = episode;
}
// GM_xmlhttpRequest的Promise封装
#makeGetRequest(url) {
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: "GET",
url: url,
onload: (response) => {
resolve(response.responseText);
},
onerror: (error) => {
reject(error);
},
});
});
}
// Bilibili弹幕xml串转换为可加载的对象
#parseBilibiliDanmaku(string) {
const $xml = new DOMParser().parseFromString(string, "text/xml");
return [...$xml.getElementsByTagName("d")]
.map(($d) => {
const p = $d.getAttribute("p");
if (p === null || $d.childNodes[0] === undefined) return null;
const values = p.split(",");
const mode = { 6: "ltr", 1: "rtl", 5: "top", 4: "bottom" }[values[1]];
if (!mode) return null;
const fontSize = Number(values[2]) || 25;
const color = `000000${Number(values[3]).toString(16)}`.slice(-6);
return {
text: $d.childNodes[0].nodeValue,
mode,
time: values[0] * 1,
baseTime: values[0] * 1,
style: {
fontSize: `${fontSize}px`,
color: `#${color}`,
textShadow: "0px 1px 3px #000,0px 0px 3px #000",
font: `${fontSize}px sans-serif`,
fillStyle: `#${color}`,
strokeStyle: color === "000000" ? "#fff" : "#000",
lineWidth: 2.0,
},
};
})
.filter((x) => x);
}
// 获取Bilibili对应视频的弹幕
async getInfoAndDanmaku(xml = undefined) {
if (!xml) {
const fetchedFromKeyword = JSON.parse(
await this.#makeGetRequest(
`${this.constructor.#KEYWORD_API_BASE}&keyword=${this.keyword}`
)
).data.result;
this.mdid = fetchedFromKeyword[0].media_id;
this.ssid = fetchedFromKeyword[0].season_id;
this.epid = fetchedFromKeyword[0].eps[0].id;
// 获取cid
let { code, message, result } = JSON.parse(
await this.#makeGetRequest(
`${this.constructor.#EP_API_BASE}?ep_id=${this.epid}`
)
);
if (code) {
throw new Error(message);
}
this.cid = result.episodes[this.episode - 1].cid;
// 获取弹幕
this.comments = this.#parseBilibiliDanmaku(
await this.#makeGetRequest(
`${this.constructor.#DANMAKU_API_BASE}?oid=${this.cid}`
)
);
this.basic_info = {
mdid: this.mdid,
ssid: this.ssid,
epid: this.epid,
cid: this.cid,
comments: this.comments,
};
return this.basic_info;
} else {
this.basic_info = { comments: this.#parseBilibiliDanmaku(xml) };
return this.basic_info;
}
}
}
class DanmakuLoader {
danmaku;
constructor(keyword, episode, container, video) {
this.keyword = keyword;
this.episode = episode;
this.container = container;
this.video = video;
}
async #loadDanmaku(xml) {
const bilibiliDanmaku = new BilibiliDanmaku(this.keyword, this.episode);
this.basic_info = await bilibiliDanmaku.getInfoAndDanmaku(xml);
this.danmaku = new Danmaku({
container: this.container,
media: this.video,
comments: this.basic_info.comments,
speed: 144,
});
}
async showDanmaku(xml) {
await this.#loadDanmaku(xml);
this.video.style.position = "absolute";
this.danmaku.show();
let resizeObserver = new ResizeObserver(() => {
this.danmaku.resize();
});
resizeObserver.observe(this.container);
return this.danmaku;
}
}
class DanmakuSettings {
danmakuWrapper;
danmakuButton;
danmakuSettingBox;
buttonHtml =
"<button class=\"dplayer-icon dplayer-comment-icon\" data-balloon=\"弹幕设置\" data-balloon-pos=\"up\"><span class=\"dplayer-icon-content\"><svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" viewBox=\"0 0 32 32\"><path d=\"M27.128 0.38h-22.553c-2.336 0-4.229 1.825-4.229 4.076v16.273c0 2.251 1.893 4.076 4.229 4.076h4.229v-2.685h8.403l-8.784 8.072 1.566 1.44 7.429-6.827h9.71c2.335 0 4.229-1.825 4.229-4.076v-16.273c0-2.252-1.894-4.076-4.229-4.076zM28.538 19.403c0 1.5-1.262 2.717-2.819 2.717h-8.36l-0.076-0.070-0.076 0.070h-11.223c-1.557 0-2.819-1.217-2.819-2.717v-13.589c0-1.501 1.262-2.718 2.819-2.718h19.734c1.557 0 2.819-0.141 2.819 1.359v14.947zM9.206 10.557c-1.222 0-2.215 0.911-2.215 2.036s0.992 2.035 2.215 2.035c1.224 0 2.216-0.911 2.216-2.035s-0.992-2.036-2.216-2.036zM22.496 10.557c-1.224 0-2.215 0.911-2.215 2.036s0.991 2.035 2.215 2.035c1.224 0 2.215-0.911 2.215-2.035s-0.991-2.036-2.215-2.036zM15.852 10.557c-1.224 0-2.215 0.911-2.215 2.036s0.991 2.035 2.215 2.035c1.222 0 2.215-0.911 2.215-2.035s-0.992-2.036-2.215-2.036z\"></path></svg></span></button>";
constructor(danmakuLoader, danmakuDOM, iconsBar, iframe) {
this.danmaku = danmakuLoader.danmaku;
this.danmakuLoader = danmakuLoader;
this.danmakuDOM = danmakuDOM;
this.iconsBar = iconsBar;
this.iframe = iframe;
this.danmakuSettings = GM_getValue("danmakuSettings", {
show: true,
speed: 144,
opacity: 1,
fontSize: 25,
limit: 1,
});
this.#createButton();
this.#createSettingBox();
this.#addSettingItems();
}
#createButton() {
if(this.iframe.querySelector("#danmaku-wrapper")){
this.iframe.querySelector("#danmaku-wrapper").remove();
}
// 创建按钮
this.danmakuWrapper = this.iframe.createElement("div");
this.danmakuWrapper.setAttribute("id", "danmaku-wrapper");
this.danmakuWrapper.setAttribute("class", "dplayer-setting");
this.danmakuWrapper.setAttribute(
"style",
"display:inline-block;height:100%;"
);
this.danmakuWrapper.innerHTML = this.buttonHtml;
// 添加到播放器
this.iconsBar.prepend(this.danmakuWrapper);
this.danmakuButton = this.danmakuWrapper.firstChild;
// 设定打开和关闭面板的操作
this.danmakuButton.addEventListener("click", () => {
if (
this.danmakuSettingBox.style.transform === "scale(0)" ||
!this.danmakuSettingBox.style.transform
) {
this.danmakuSettingBox.style.transform = "scale(1)";
} else {
this.danmakuSettingBox.style.transform = "scale(0)";
}
});
this.iframe.addEventListener("click", (e) => {
if (
!e.composedPath().includes(this.danmakuButton) &&
!e.composedPath().includes(this.danmakuSettingBox)
) {
this.danmakuSettingBox.style.transform = "scale(0)";
}
});
// 调整一下底栏样式，原来的看不太清
this.iframe.querySelector(".dplayer-controller").style.backgroundColor =
"#0002";
}
#createSettingBox() {
this.danmakuSettingBox = this.iframe.createElement("div");
this.danmakuSettingBox.setAttribute("class", "dplayer-setting-box");
this.danmakuSettingBox.setAttribute("style", "transform: scale(0);");
this.danmakuSettingBox.setAttribute("style", "width: 200px;");
this.danmakuWrapper.appendChild(this.danmakuSettingBox);
}
#addSettingItems() {
this.#addShowOrHide();
this.#addDanmakuSpeed();
this.#addDanmakuOpacity();
this.#addDanmakuFontSize();
this.#addDanmakuLimit();
this.#addOffsetSetting();
}
#addShowOrHide() {
this.showOrHideDanmaku = this.iframe.createElement("div");
this.showOrHideDanmaku.setAttribute(
"class",
"dplayer-setting-item show-danmaku"
);
this.showOrHideDanmaku.style.display = "block";
this.showOrHideDanmaku.innerHTML =
"<span class=\"dplayer-label\">显示弹幕</span>";
this.showOrHideToggle = this.iframe.createElement("input");
this.showOrHideToggle.setAttribute("type", "checkbox");
this.danmakuSettings.show
? this.showOrHideToggle.setAttribute("checked", "checked")
: null;
this.showOrHideToggle.style.float = "right";
this.danmakuDOM.setAttribute(
"style",
this.danmakuSettings.show ? "display:block;" : "display:none;"
);
this.showOrHideToggle.addEventListener("click", () => {
if (this.showOrHideToggle.checked) {
this.danmakuDOM.setAttribute("style", "display:block;");
this.danmakuSettings.show = true;
GM_setValue("danmakuSettings", this.danmakuSettings);
} else {
this.danmakuDOM.setAttribute("style", "display:none;");
this.danmakuSettings.show = false;
GM_setValue("danmakuSettings", this.danmakuSettings);
}
});
this.showOrHideDanmaku.appendChild(this.showOrHideToggle);
this.danmakuSettingBox.appendChild(this.showOrHideDanmaku);
}
#addDanmakuSpeed() {
this.danmakuSpeed = this.iframe.createElement("div");
this.danmakuSpeed.setAttribute(
"class",
"dplayer-setting-item speed-danmaku"
);
this.danmakuSpeed.style.display = "block";
this.danmakuSpeed.innerHTML = "<span class=\"dplayer-label\">弹幕速度</span>";
this.danmakuSpeedRange = this.iframe.createElement("input");
this.danmakuSpeedRange.setAttribute("type", "range");
this.danmakuSpeedRange.style.display = "inline-block";
this.danmakuSpeedRange.style.float = "right";
this.danmakuSpeedRange.style.width = "50%";
this.danmakuSpeedRange.setAttribute("min", 72);
this.danmakuSpeedRange.setAttribute("max", 288);
this.danmakuSpeedRange.setAttribute("value", this.danmakuSettings.speed);
this.danmaku.speed = this.danmakuSettings.speed;
this.danmakuSpeedRange.addEventListener("input", () => {
this.danmakuSettings.speed = Number(this.danmakuSpeedRange.value);
GM_setValue("danmakuSettings", this.danmakuSettings);
this.danmaku.speed = this.danmakuSettings.speed;
});
this.danmakuSpeed.appendChild(this.danmakuSpeedRange);
this.danmakuSettingBox.appendChild(this.danmakuSpeed);
}
#addDanmakuOpacity() {
this.danmakuOpacity = this.iframe.createElement("div");
this.danmakuOpacity.setAttribute(
"class",
"dplayer-setting-item transparency-danmaku"
);
this.danmakuOpacity.style.display = "block";
this.danmakuOpacity.innerHTML =
"<span class=\"dplayer-label\">弹幕透明度</span>";
this.danmakuOpacityRange = this.iframe.createElement("input");
this.danmakuOpacityRange.setAttribute("type", "range");
this.danmakuOpacityRange.style.display = "inline-block";
this.danmakuOpacityRange.style.float = "right";
this.danmakuOpacityRange.style.width = "50%";
this.danmakuOpacityRange.setAttribute("min", 0);
this.danmakuOpacityRange.setAttribute("max", 1);
this.danmakuOpacityRange.setAttribute("step", 0.1);
this.danmakuOpacityRange.setAttribute(
"value",
this.danmakuSettings.opacity
);
this.danmakuDOM.style.opacity = this.danmakuSettings.opacity;
this.danmakuOpacityRange.addEventListener("input", () => {
this.danmakuSettings.opacity = Number(this.danmakuOpacityRange.value);
GM_setValue("danmakuSettings", this.danmakuSettings);
this.danmakuDOM.style.opacity = this.danmakuSettings.opacity;
});
this.danmakuOpacity.appendChild(this.danmakuOpacityRange);
this.danmakuSettingBox.appendChild(this.danmakuOpacity);
}
#addDanmakuFontSize() {
this.danmakuFontSize = this.iframe.createElement("div");
this.danmakuFontSize.setAttribute(
"class",
"dplayer-setting-item font-size-danmaku"
);
this.danmakuFontSize.style.display = "block";
this.danmakuFontSize.innerHTML =
"<span class=\"dplayer-label\">弹幕字体大小</span>";
this.danmakuFontSizeRange = this.iframe.createElement("input");
this.danmakuFontSizeRange.setAttribute("type", "range");
this.danmakuFontSizeRange.style.display = "inline-block";
this.danmakuFontSizeRange.style.float = "right";
this.danmakuFontSizeRange.style.width = "50%";
this.danmakuFontSizeRange.setAttribute("min", 16);
this.danmakuFontSizeRange.setAttribute("max", 32);
this.danmakuFontSizeRange.setAttribute("step", 1);
this.danmakuFontSizeRange.setAttribute(
"value",
this.danmakuSettings.fontSize
);
setDanmakuFontSize(this.danmakuSettings.fontSize, this.danmaku);
this.danmakuFontSizeRange.addEventListener("input", () => {
this.danmakuSettings.fontSize = Number(this.danmakuFontSizeRange.value);
GM_setValue("danmakuSettings", this.danmakuSettings);
setDanmakuFontSize(this.danmakuSettings.fontSize, this.danmaku);
});
this.danmakuFontSize.appendChild(this.danmakuFontSizeRange);
this.danmakuSettingBox.appendChild(this.danmakuFontSize);
function setDanmakuFontSize(fontSize, danmaku) {
for (const i of danmaku.comments) {
i.style.font = `${fontSize}px sans-serif`;
}
}
}
#addDanmakuLimit() {
this.danmakuLimit = this.iframe.createElement("div");
this.danmakuLimit.setAttribute(
"class",
"dplayer-setting-item limit-danmaku"
);
this.danmakuLimit.style.display = "block";
this.danmakuLimit.innerHTML = "<span class=\"dplayer-label\">弹幕密度</span>";
this.danmakuLimitRange = this.iframe.createElement("input");
this.danmakuLimitRange.setAttribute("type", "range");
this.danmakuLimitRange.style.display = "inline-block";
this.danmakuLimitRange.style.float = "right";
this.danmakuLimitRange.style.width = "50%";
this.danmakuLimitRange.setAttribute("min", 0);
this.danmakuLimitRange.setAttribute("max", 1);
this.danmakuLimitRange.setAttribute("step", 0.01);
this.danmakuLimitRange.setAttribute("value", this.danmakuSettings.limit);
limitDanmaku(this.danmakuSettings.limit, this.danmaku);
this.danmakuLimitRange.addEventListener("input", () => {
this.danmakuSettings.limit = Number(this.danmakuLimitRange.value);
GM_setValue("danmakuSettings", this.danmakuSettings);
limitDanmaku(this.danmakuSettings.limit, this.danmaku);
});
this.danmakuLimit.appendChild(this.danmakuLimitRange);
this.danmakuSettingBox.appendChild(this.danmakuLimit);
function limitDanmaku(percent, danmaku) {
for (const i of danmaku.comments) {
i.style.display = "block";
if (Math.random() > percent) {
i.style.display = "none";
}
}
}
}
#addOffsetSetting() {
this.offsetSetting = this.iframe.createElement("div");
this.offsetSetting.setAttribute("class", "dplayer-setting-item offset");
this.offsetSetting.style.display = "block";
this.offsetSetting.innerHTML =
"<span class=\"dplayer-label\">弹幕偏移(s)</span>";
this.offsetNumber = this.iframe.createElement("input");
this.offsetNumber.setAttribute("type", "number");
this.offsetNumber.style.display = "inline-block";
this.offsetNumber.style.float = "right";
this.offsetNumber.style.width = "47%";
this.offsetNumber.setAttribute("min", -10);
this.offsetNumber.setAttribute("max", 10);
this.offsetNumber.setAttribute("step", 0.1);
this.offsetNumber.setAttribute("value", 0);
this.offsetNumber.addEventListener("input", () => {
for (const comment of this.danmaku.comments) {
comment.time = comment.baseTime - Number(this.offsetNumber.value);
}
this.danmakuLoader.video.currentTime = Number(
this.danmakuLoader.video.currentTime
);
});
this.offsetSetting.appendChild(this.offsetNumber);
this.danmakuSettingBox.appendChild(this.offsetSetting);
}
}