消除划动动画 可设置划动倍率和更新间隔 可设置双击放大复原
// ==UserScript==
// @name 墨水屏电纸书划动
// @namespace cc.cxuan.books
// @version 1.30
// @description 消除划动动画 可设置划动倍率和更新间隔 可设置双击放大复原
// @match *://*/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @run-at document-end
// @noframes
// @license MIT
// @author cxuan.cc
// ==/UserScript==
(function(){
// 设置项
let my = GM_getValue('multiplierY', 2.5);
let mx = 2;
let intervalSec = GM_getValue('interval', 0);
let doubleClickZoom = GM_getValue('doubleClickZoom', 2);
let enableMx = GM_getValue('enableMx', false);
GM_registerMenuCommand(`设置Y轴移动倍率（当前 ${my}）`, ()=>{
let v = parseFloat(prompt('Y 轴滑动倍率:', my));
if (!isNaN(v)) {
GM_setValue('multiplierY', my = v);
location.reload();
}
});
GM_registerMenuCommand(`设置更新间隔（当前 ${intervalSec}s）`, ()=>{
let v = parseFloat(prompt('更新间隔（秒，0=仅松手时刷新）:', intervalSec));
if (!isNaN(v)) {
GM_setValue('interval', intervalSec = v);
location.reload();
}
});
GM_registerMenuCommand(`设置双击放大倍率（当前 ${doubleClickZoom}）`, ()=>{
let v = parseFloat(prompt('双击放大倍率（0=无双击放大）:', doubleClickZoom));
if (!isNaN(v)) {
GM_setValue('doubleClickZoom', doubleClickZoom = v);
location.reload();
}
});
GM_registerMenuCommand(`切换x轴移动优化开关 固定${mx}倍（当前 ${enableMx ? '开' : '关'}）`, ()=>{
enableMx = !enableMx;
GM_setValue('enableMx', enableMx);
location.reload();
});
//开启或禁止双指缩放
let meta = document.querySelector('meta[name=viewport]');
const vp = 'width=device-width, initial-scale=1, minimum-scale=0.25, maximum-scale=10, user-scalable=yes';
const applyViewport = ()=>{
let head = document.head || document.getElementsByTagName('head')[0] || document.documentElement;
// 添加新的
if(doubleClickZoom > 0){
if (meta) {
meta.setAttribute('content', vp);
} else {
meta = document.createElement('meta');
meta.name = 'viewport';
meta.content = vp;
document.head.appendChild(meta);
}
}else{
if (meta) {
meta.setAttribute('content', vp);
}
}
head.prepend(meta);
};
applyViewport();
const initialZoom = parseFloat(document.body.style.zoom) || 1;
const touchMap = {}; // id -> { sx, sy, cx, cy, el, lastDx, lastDy }
let timerId = null;
function periodicUpdate() {
for (let id in touchMap) {
const info = touchMap[id];
if (info.cx == null || info.cy == null) continue;
let totalDx = (info.sx - info.cx) * mx;
let totalDy = (info.sy - info.cy) * my;
let dX = totalDx - (info.lastDx || 0);
let dY = totalDy - (info.lastDy || 0);
if (dX) info.el.scrollLeft += dX;
if (dY) info.el.scrollTop += dY;
info.lastDx = totalDx;
info.lastDy = totalDy;
}
}
function startTimer(){
if (intervalSec > 0 && !timerId) {
timerId = setInterval(periodicUpdate, intervalSec * 1000);
}
}
function stopTimer(){
if (timerId) {
clearInterval(timerId);
timerId = null;
}
}
document.addEventListener('touchstart', e=>{
if (e.touches.length > 1) return;
for (const t of e.changedTouches) {
let el = t.target;
while (el && el !== document) {
const style = getComputedStyle(el);
const canScrollY = el.scrollHeight > el.clientHeight && /auto|scroll/.test(style.overflowY);
const canScrollX = el.scrollWidth > el.clientWidth && /auto|scroll/.test(style.overflowX);
if (canScrollY || canScrollX) break;
el = el.parentNode;
}
if (!el || el === document) {
el = document.scrollingElement || document.documentElement;
}
touchMap[t.identifier] = {
sx: t.clientX, sy: t.clientY,
cx: t.clientX, cy: t.clientY,
el,
lastDx: 0, lastDy: 0
};
}
startTimer();
}, { passive:false });
document.addEventListener('touchmove', e=>{
if (e.touches.length > 1) return;
let doPrevent = false;
for (const t of e.changedTouches) {
const info = touchMap[t.identifier];
if (!info) continue;
info.cx = t.clientX;
info.cy = t.clientY;
// 允许顶部下拉刷新
if (!(info.el === (document.scrollingElement || document.documentElement)
&& info.el.scrollTop === 0
&& (t.clientY - info.sy) > 0)) {
doPrevent = true;
}
// 主要横向移动
if(!enableMx){
if (Math.abs(info.cx - info.sx) > Math.abs(info.cy - info.sy) * 2){
doPrevent = false;
}
}
}
if (doPrevent) e.preventDefault();
}, { passive:false });
function finishTouch(e) {
if (e.touches.length > 1) return;
for (const t of e.changedTouches) {
const info = touchMap[t.identifier];
if (!info) continue;
if (intervalSec === 0) {
let dx = (info.sx - t.clientX) * mx;
let dy = (info.sy - t.clientY) * my;
info.el.scrollLeft += dx;
info.el.scrollTop += dy;
} else {
info.cx = t.clientX;
info.cy = t.clientY;
periodicUpdate();
}
delete touchMap[t.identifier];
}
if (Object.keys(touchMap).length === 0) stopTimer();
}
document.addEventListener('touchend', finishTouch, { passive:false });
document.addEventListener('touchcancel', finishTouch, { passive:false });
// 用 viewport 实现双击复位
let lastTap = 0;
let isDoubleClickZoomBig = false;
document.addEventListener('touchend', e=>{
if (doubleClickZoom == 0) return;
// 仅单指
if (e.touches.length === 0 && e.changedTouches.length === 1) {
let now = Date.now();
if (now - lastTap < 300) {
// 修改或插入 viewport
let meta = document.querySelector('meta[name=viewport]');
isDoubleClickZoomBig = !isDoubleClickZoomBig;
const vp = `width=device-width, initial-scale=${isDoubleClickZoomBig ? doubleClickZoom : 1}, maximum-scale=10`;
if (meta) {
meta.setAttribute('content', vp);
} else {
meta = document.createElement('meta');
meta.name = 'viewport';
meta.content = vp;
document.head.appendChild(meta);
}
}
lastTap = now;
}
}, { passive:true });
})();