mirror of
https://github.com/the1812/Bilibili-Evolved.git
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93 lines
3.1 KiB
JavaScript
93 lines
3.1 KiB
JavaScript
import { getFriendlyTitle } from '../title';
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let canvas = null;
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let context = null;
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class Screenshot {
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constructor(blob, time) {
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this.blob = blob;
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this.time = time;
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this.url = URL.createObjectURL(this.blob);
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}
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get filename() {
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return getFriendlyTitle() + " @" + this.time.toString() + ".png";
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}
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revoke() {
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URL.revokeObjectURL(this.url);
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}
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}
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export const takeScreenshot = (video) => {
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if (canvas === null || context === null) {
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canvas = document.createElement("canvas");
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canvas.width = video.videoWidth;
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canvas.height = video.videoHeight;
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context = canvas.getContext("2d");
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}
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const time = video.currentTime;
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return new Promise((resolve, reject) => {
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if (canvas === null || context === null) {
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reject("视频截图失败: canvas 未创建或创建失败.");
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return;
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}
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context.drawImage(video, 0, 0);
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canvas.toBlob(blob => {
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if (blob === null) {
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reject("视频截图失败: 创建 blob 失败.");
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return;
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}
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resolve(new Screenshot(blob, time));
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}, "image/png");
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});
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};
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resources.applyStyle("videoScreenshotStyle");
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document.body.insertAdjacentHTML("beforeend", /*html*/ `
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<div class="video-screenshot-list">
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<video-screenshot v-for="screenshot of screenshots" v-bind:filename="screenshot.filename" v-bind:object-url="screenshot.url" v-bind:key="screenshot.url"></video-screenshot>
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</div>
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`);
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Vue.component("video-screenshot", {
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props: {
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objectUrl: String,
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filename: String,
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},
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template: /*html*/ `
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<div class="video-screenshot-thumbnail">
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<img v-bind:src="objectUrl">
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<div class="mask">
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<a v-bind:href="objectUrl" v-bind:download="filename" title="保存">
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<button class="save"><i class="mdi mdi-content-save-outline"></i></button>
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</a>
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<button title="丢弃" class="discard"><i class="mdi mdi-delete-forever-outline"></i></button>
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</div>
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</div>`,
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});
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const screenShotsList = new Vue({
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el: ".video-screenshot-list",
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data: {
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screenshots: [],
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},
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});
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Observer.videoChange(async () => {
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const video = await SpinQuery.select("#bofqi video");
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const time = await SpinQuery.select(".bilibili-player-video-time");
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if (video === null || time === null || document.querySelector(".video-take-screenshot")) {
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return;
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}
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time.insertAdjacentHTML("afterend", /*html*/ `
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<div class="video-take-screenshot" title="截图">
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<span><i class="mdi mdi-camera"></i></span>
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</div>`);
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const screenshotButton = document.querySelector(".video-take-screenshot");
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if (screenshotButton === null) {
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return;
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}
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screenshotButton.addEventListener("click", async () => {
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const screenshot = await takeScreenshot(video);
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screenShotsList.screenshots.push(screenshot);
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});
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});
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export default {
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export: {
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takeScreenshot,
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screenShotsList,
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},
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};
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