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<div class="msw-container"> <div on:click|stopPropagation={showModal} bind:this={btnDOM} class="msw-show">MSW</div> </div>
<script> import { onMount } from "svelte"; function getModels() { let userAgentInfo = navigator.userAgent; let mobileAgents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"]; return mobileAgents.reduce((prev, ua)=>{ return userAgentInfo.includes(ua) || prev }, false) }; const MSW_BTN_POSITION = '__MSW_BTN_POSITION__'
let show = false; let btnDOM = null; let isDrop = false; let isMoving = false; let offset = { x: 0, y: 0, }; let offsetDown = {}; let dropTimer = null; let isMobile = getModels(); let btnW = 0; let btnH = 0; let clientW = 0; let clientH = 0; let eventType = isMobile ? 'touchstart' : 'mousedown';
onMount(async () => { initClientData(); return () => { btnDOM.removeEventListener(eventType, btnMousedown) } });
function initClientData() { let local = localStorage.getItem(MSW_BTN_POSITION) if (local) { offset = JSON.parse(local) btnMove() } let w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth clientW = isMobile ? w : document.body.clientWidth clientH = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight btnW = btnDOM.offsetWidth btnH = btnDOM.offsetHeight btnDOM.addEventListener(eventType, btnMousedown) } function eventHandle (type) { if (isMobile) { document[`${type}EventListener`]('touchmove', mousemove); document[`${type}EventListener`]('touchend', mouseup); } else { document[`${type}EventListener`]('mousemove', mousemove); document[`${type}EventListener`]('mouseup', mouseup); } }
function showModal () { if (!isMoving) { show = true; } }
function btnMousedown(e) { e = e || window.event isDrop = true offsetDown = { ...getOffset(e) }; eventHandle('add') }
function mousemove(e) { e = e || window.event if (isDrop) { let data = getOffset(e); isMoving = !(offsetDown.x === data.x && offsetDown.y === data.y) let x = data.x - btnW / 2; let y = data.y - btnH / 2; if (x > 5 && x < (clientW-btnW - 5)) { offset.x = x; } if (y > 5 && y < (clientH-btnH - 5)) { offset.y = y; } if (isMoving) { btnMove() }
clearTimeout(dropTimer); dropTimer = setTimeout(()=>{ isMoving = false; clearTimeout(dropTimer); dropTimer = null; }, 300); } }
function mouseup() { if (isDrop) { window.localStorage.setItem(MSW_BTN_POSITION, JSON.stringify(offset)) eventHandle('remove') } isDrop = false }
function btnMove (){ btnDOM.style.cssText = ` left: ${offset.x}px; top: ${offset.y}px; right: auto; bottom: auto; ` }
function getOffset(e) { return isMobile ? { x: e.targetTouches[0].clientX, y: e.targetTouches[0].clientY, } : { x: e.clientX, y: e.clientY, } } </script>
<style lang="scss" type="text/scss"> @import "index"; </style>
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