picture adjuect to 1200 * 1200
Устаревшая версия за
// ==UserScript==
// @name demo
// @namespace http://tampermonkey.net/
// @version 0.1
// @description picture adjuect to 1200 * 1200
// @author yao
// @match
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant none
// @include https://www.blu-ray.com/movies/*
// @require https://code.jquery.com/jquery-3.6.0.min.js
// ==/UserScript==
(function() {
'use strict';
console.log("aaa");
$('#frontimage_overlay').hover(function(e){
return handle(e,$(this));
},function(){
setTimeout(function(){ removeImage(); },1000);
});
function handle(e,element){
showImage(e);
return false;
}
//获取图片
function showImage(e){
$('#tempId').remove();
var tempBtn = $('<button id = "tempId">1200*1200</button>');
tempBtn.css({
width:50,
height:50,
position:'absolute',
top:e.pageY,
left:e.pageX+30
});
$(tempBtn).click(doHandle);
$('body').eq(0).append(tempBtn);
}
// Your code here...
})();
function removeImage(){
console.log('开始移除图片');
$('#tempId').remove();
}
function doHandle() {
console.log("do");
$('#triggers img').trigger('click');
let src = $('#frontimage').attr('src');
adjust(src);
}
function adjust(src) {
var canvas = document.createElement('canvas');
canvas.width = 1200;
canvas.height = 1200;
var ctx = canvas.getContext('2d');
ctx.fillStyle = "#fff";
ctx.fillRect(0,0,canvas.width,canvas.height);
let img = new Image;
img.onload = _ => {
console.log(img.naturalWidth, img.naturalHeight);
let max = Math.max(img.naturalHeight, img.naturalWidth);
let ratio = img.naturalWidth / img.naturalHeight;
if (max === img.naturalHeight) {
img.width = 300 * ratio;
let height = 1200;
let width = 1200 * ratio;
ctx.drawImage(img, (1200 - width) / 2, 0, width, height);
console.log("download");
download(canvas);
}
}
img.src = src;
img.setAttribute("crossOrigin", "Anonymous");
}
function download(canvas) {
let dom = document.createElement("a");
dom.href = canvas.toDataURL("image/jpeg");
dom.download = new Date().getTime() + ".jpg";
dom.click();
}