在uni-ui中找不到對應的工具

后面想想也是 移動端取色干什么？

沒辦法 也掛不住特殊需求

因為去應用市場下載 這總東西 又不是很有必要

那么 下面這個組件或許能解決您的煩惱

<template>	<view>		<view>			<view id="colorBg" @touchstart="startTouch" @touchmove="moveIng"				@touchend="endTouch">				<view :catchtouchmove="true" @c.stop="()=>{}" :style=""transform:rotate(" +degrees +"deg)""></view>				<view :style=""color:"+getColorByDeg(this.degrees)">拖轉輪播取色</view>			</view>			<view>				<button @click.stop = "close" type="default">取消</button>				<button @click.stop = "readColor" type="default">確認</button>			</view>		</view>	</view></template><script>	export default {		data() {			return {				pointerShow: true,				colorPanWidth: 20,				colorPanRadius: 0,				pointerBox: {},				degrees: 0			}		},		mounted() {			uni.getSystemInfo({				success: (res) => {					uni.createSelectorQuery().select("#colorBg").boundingClientRect((rect) => {						this.pointerBox = rect					}).exec()					this.colorPanRadius = res.screenWidth * 0.4				}			})		},		methods: {			close(){this.$emit("close");			},			readColor(){				let colro = this.getColorByDeg(this.degrees);				this.$emit("change",colro);			},    rbg2Hex(r, g, b) {return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);    },    calculationScheme(deg) {      deg = 360- deg + 120		      const r = Math.round(Math.sin((deg * 2 * Math.PI) / 360) * 255)		      const g = Math.round(Math.sin(((deg + 120) * 2 * Math.PI) / 360) * 255)		      const b = Math.round(Math.sin(((deg + 240) * 2 * Math.PI) / 360) * 255)      return this.colorRgbToHex(`rgb(${r},${g},${b})`);    },			startTouch(e) {				const {					pageX,					pageY				} = e.touches[0]				this.rotatePointer(pageX, pageY)			},			endTouch(e) {				const {					pageX,					pageY				} = e.changedTouches[0]				this.rotatePointer(pageX, pageY)			},			moveIng(e) {				const {					pageX,					pageY				} = e.touches[0]				this.rotatePointer(pageX, pageY)			},			rotatePointer(pageX = 0, pageY = 0) {				const {					pointerBox,					colorPanWidth				} = this				const mouseX = pageX - colorPanWidth				const mouseY = pageY - colorPanWidth				var centerY = pointerBox.top + (pointerBox.height / 2) - 0,					centerX = pointerBox.left + (pointerBox.height / 2) - 0,					radians = Math.atan2(mouseX - centerX, mouseY - centerY)				this.degrees = (radians * (180 / Math.PI) * -1) + 180;			},		     getColorByDeg(deg) {		      deg = 360- deg + 120		      const r = Math.round(Math.sin((deg * 2 * Math.PI) / 360) * 255)		      const g = Math.round(Math.sin(((deg + 120) * 2 * Math.PI) / 360) * 255)		      const b = Math.round(Math.sin(((deg + 240) * 2 * Math.PI) / 360) * 255)		      return `rgb(${r},${g},${b})`		    },			colorRgbToHex(rgbStr) {				const reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6}|[0-9a-fA-f]{8}|[0-9a-fA-f]{6}[0-9]{2})$/;				if (reg.test(rgbStr)) {					return rgbStr				} else {					const rgbArray = rgbStr.replace(/(?:\(|\)|rgba|rgb|RGBA|RGB)*/g, "").split(",");					let strHex = "#";					for (let i = 0; i < rgbArray.length; i++) {					if (i !== 3) {						if (rgbArray[i] == "0") {						    strHex += "00"						} else {						    let newItem =Number(rgbArray[i]).toString(16)						if (newItem.length < 2){							newItem = "0" + newItem						}						    strHex += newItem						}							} else {						strHex += rgbArray[i] == "0" ? "" : Number(rgbArray[i]) * 100					}					}					return strHex;				}			}		}	}</script><style>	.dialog {		display: block;		border-radius: 30rpx;		background-color: #303030;		margin: 20rpx;		padding: 30rpx;	}	.flex {		display: flex;		justify-content: space-between;	}	.colorBg {		width: 80vw;		height: 80vw;		margin: 5vw;		background: conic-gradient(red,				yellow,				lime,				aqua,				blue,				fuchsia,				red);		border-radius: 50%;		position: relative;		display: flex;		justify-content: center;		align-items: center;	}	.roundBuff {		width: 55vw;		height: 55vw;		-webkit-transform-origin: center 50%;		transform-origin: center 50%;		background: #303030;		border-radius: 50%;	}	.roundBuff::before {      content: "";      width: 15px;      height: 15px;	  background: #303030;      border: solid #303030;      border-width: 10px 10px 0 0;      transform: translate(-50%, -50%) rotate(-45deg);      position: absolute;      left: 50%;      top: 2%;}	.lee_btn {		background: #00000000;		color: #FFFFFF;		width: 36%;		height: 80rpx;		line-height: 70rpx;		text-align: center;		justify-content: center;		font-size: 30rpx;		border-radius: 50rpx;		border: 5rpx #FFFFFF solid;		font-weight: bold;		padding: 1px 20px;	}	.colorPan {		position: absolute;		color: #FFFFFF;	}</style>

直接將整個組件復制過去 接口使用

組件有兩個方法

• change 當你點擊確定時觸發 返回 RGB 色碼
• close 當你點擊取消時觸發

總結

到此這篇關于uni-app低成本封裝一個取色器組件的文章就介紹到這了,更多相關uni-app封裝取色器組件內容請搜索以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持！