Caption Capture Merge
// ==UserScript==
// @name Caption Capture
// @namespace http://github.com/lanbin
// @version 0.3
// @description Caption Capture Merge
// @author lanbin
// @match https://*.qq.com/*
// @match https://*.youtube.com/*
// @grant GM_setValue
// @grant GM_getValue
// ==/UserScript==
(function() {
'use strict';
var body = document.querySelector("body");
var MAX_LOOP = 100;
var aspectRatio, capImage;
var gapDefault = 40;
var bottomGapDefault = 30;
var pressNum = 0;
var lastCapture = "";
var clicked = false;
function init(){
var loop = 0,
sid = setInterval(function(){
var video = getVideo();
if(video || loop > MAX_LOOP) {
clearInterval(sid);
createOp();
createImageTemp();
}
++loop;
}, 100);
}
function getCanvas(){
return document.querySelector("#cc-screen-shot");
}
function getContext(){
return getCanvas().getContext("2d");
}
function getVideo(){
var videos = document.querySelectorAll("video"),
v;
for(var index = 0; index < videos.length; index++){
if(videos[index].src) {
v = videos[index];
v.crossOrigin = "anonymous";
aspectRatio = v.videoWidth / v.videoHeight;
break;
}
}
return v;
}
function createOp(){
var capBtn = document.querySelector("#cc-caption-bar");
if(capBtn) {
return;
}
capBtn = document.createElement("div");
capBtn.id = "cc-caption-bar";
capBtn.style="position: absolute;right: 0;top: 100px;width: 90px;background-color: rgb(204, 204, 204);cursor: pointer;z-index: 999999;font-size: 20px;text-align: center;padding: 10px 0;color: black;font-weight: bolder;border-radius: 4px 0 0 4px;";
capBtn.innerHTML = "Caption";
body.appendChild(capBtn);
capBtn.addEventListener("click", function(){
createPanel();
});
}
function createImageTemp(){
capImage = document.querySelector("#cc-caption-image");
if(capImage) {
return;
}
capImage = document.createElement("img");
capImage.id = "cc-caption-image";
capImage.crossOrigin = "anonymous";
body.appendChild(capImage);
}
function createPanel() {
var capPanel = document.querySelector("#cc-caption-panel");
if(capPanel) {
capPanel.style.display = capPanel.style.display === "block" ? "none" : "block";
return;
}
var capCanvas = document.createElement("canvas"),
canvasBox = document.createElement("div"),
video = getVideo();
if(video.videoWidth === 0 || video.videoHeight === 0) {
alert("等5秒再点");
return;
}
capCanvas.width = video.videoWidth;
capCanvas.height = video.videoHeight;
canvasBox.id = "cc-canvas-box";
var boxStyle = "max-height:600px;overflow-y:scroll;";
if(window.screen.availWidth < 2000) {
boxStyle += "zoom:0.6;";
}
canvasBox.style = boxStyle;
canvasBox.appendChild(capCanvas);
capPanel = document.createElement("div");
capPanel.id = "cc-caption-panel";
capPanel.style="position: fixed; right: 100px; bottom:20px;background-color: #ccc;display:block;z-index:9999999;padding-bottom:80px;box-shadow: 0 0 15px #000000;";
var addScreenShotBtn = document.createElement("div");
addScreenShotBtn.id = "cc-screen-shot-btn";
addScreenShotBtn.style="background-color:#ff920b;color:white;text-align:center;font-size:14px;height:40px;line-height:40px;cursor:pointer;";
addScreenShotBtn.innerHTML = "截图";
var clearScreenShotBtn = document.createElement("div");
clearScreenShotBtn.id = "cc-clear-screen-shot";
clearScreenShotBtn.style="background-color:#000;color:white;text-align:center;font-size:14px;height:40px;line-height:40px;cursor:pointer;";
clearScreenShotBtn.innerHTML = "清空";
var inputBox = document.createElement("div");
var btnBox = document.createElement("div");
var bottomBox = document.createElement("div");
btnBox.style="float:left;width:70%;height:80px;";
inputBox.style="float:left;width:30%;height:80px;";
bottomBox.style = "position:absolute;left:0;right:0;";
var bottomHeightLabel = document.createElement("label");
var bottomHeightInput = document.createElement("input");
var bottomHeightDiv = document.createElement("div");
bottomHeightInput.id = "cc-bottom-gap";
bottomHeightLabel.innerHTML = "字幕底部边距：";
bottomHeightLabel.style = "padding: 0 5px;vertical-align:middle;";
bottomHeightInput.style = "width:50px;height:30px;vertical-align:middle;text-align:center;";
bottomHeightInput.value = bottomGapDefault;
var captionHeightLabel = document.createElement("label");
var captionHeightInput = document.createElement("input");
var captionHeightDiv = document.createElement("div");
captionHeightInput.id = "cc-caption-height";
captionHeightLabel.innerHTML = "字幕本身高度：";
captionHeightLabel.style = "padding: 0 5px;vertical-align:middle;";
captionHeightInput.style = "width:50px;height:30px;vertical-align:middle;text-align:center;";
captionHeightDiv.style = "height:40px;";
captionHeightInput.value = gapDefault;
captionHeightDiv.appendChild(captionHeightLabel);
captionHeightDiv.appendChild(captionHeightInput);
inputBox.appendChild(captionHeightDiv);
bottomHeightDiv.appendChild(bottomHeightLabel);
bottomHeightDiv.appendChild(bottomHeightInput);
inputBox.appendChild(bottomHeightDiv);
capCanvas.id = "cc-screen-shot";
btnBox.appendChild(addScreenShotBtn);
btnBox.appendChild(clearScreenShotBtn);
bottomBox.appendChild(inputBox);
bottomBox.appendChild(btnBox);
capPanel.appendChild(canvasBox);
capPanel.appendChild(bottomBox);
body.appendChild(capPanel);
addScreenShotBtn.addEventListener("click", function(){
addScreenShot();
});
clearScreenShotBtn.addEventListener("click", function() {
clearScreenShot();
});
}
function clearScreenShot(){
pressNum = 0;
var canvas = getCanvas(),
video = getVideo();
canvas.getContext("2d").clearRect(0, 0, canvas.width, canvas.height);
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
clicked = false;
}
function addScreenShot() {
if(clicked) return;
var canvas = getCanvas(),
context = getContext(),
video = getVideo(),
vWidth = video.videoWidth,
vHeight = video.videoHeight,
gap = document.querySelector("#cc-caption-height").value || gapDefault,
bottomGap = document.querySelector("#cc-bottom-gap").value || bottomGapDefault;
clicked = true;
if(pressNum === 0){
context.drawImage(video, 0, 0, vWidth, vHeight- bottomGap, 0, 0, vWidth, vHeight - bottomGap);
// context.font = "13px Arial";
// context.fillStyle = "white";
// context.fillText("Screen Shot by Caption Capture",10,20);
pressNum++;
clicked = false;
}else{
var dataURL = getCanvas().toDataURL("image/png");
var image = new Image();
image.onload = function() {
clicked = false;
var offset = pressNum * gap;
canvas.width = vWidth;
canvas.height = vHeight + offset;
getContext().drawImage(video, 0, 0, vWidth, vHeight - bottomGap, 0, offset, vWidth, vHeight - bottomGap);
getContext().drawImage(image, 0, 0);
pressNum++;
document.querySelector("#cc-canvas-box").scrollTop = document.querySelector("#cc-canvas-box").scrollHeight;
};
image.src = dataURL;
}
}
init();
})();
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