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ynGallery.vue
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ynGallery.vue
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<!-- ynGallery 画廊组件 -->
<template>
<view class="ynGalleryPanel">
<view class="gallerypanel" style="filter:brightness(1);border-radius:1upx" :style="{'background':bkstyle,'height':galleryheight+'px','width':'100%'}">
<scroll-view class="scroll-view" scroll-x="true" scroll-with-animation="true" :scroll-into-view="toview" :scroll-left="scrollLeft" @scroll="scroll">
<!-- scroll-view-panle 容纳左右空块+中间img块 -->
<view class="scroll-view-panle" @touchend='touchEndHandle' @touchstart='touchStartHandle' @touchmove='touchMoveHandle'>
<!-- 左侧留空 必须用min-width属性 用width属性无效-->
<view class="leftview" :style="{'min-width':sviewlst.leftview.w+'px','height':galleryheight+'px'}"></view>
<!-- 中间图像横向列表 ==-->
<!-- 外层 高度与画廊高度一样 -->
<view :id="'imgviewpanel'+index" :ref="'imgviewpanel'+index" :class="[activeviewindex == index? 'trans-fadeout': '']"
@animationstart="animationstartHandle" @animationend="animationendHandle"
v-for="(item,index) in sviewlst.imgsview" :key="index"
:style="{'width':item.w+'px','height':galleryheight+'px'}"
style="border: #BB6622 0px solid;display:flex;flex-direction: column;align-content:center;justify-content: flex-end;">
<!-- 内层 高度是图片容器的高度 -->
<!-- 顶部圆角角标 -->
<view v-if="showbadge && badegtype=='round'" class="roundbadge" :style="{background:[(index % 2) ==0? 'red':'green']}">
<text> {{item.badeg}}</text>
</view>
<ynTriangleBadge v-if="showbadge && badegtype=='trian'" :width="badegwidth" :height="badegheight" :text="item.badeg" :bgcolor="item.badegcolor"
style="z-index:2;align-self: flex-end;margin-right: 5px;border: #EC6D2C 0upx solid;"
:style="{'margin-bottom':(parseInt(badegheight)+5)*-1+'px'}">
</ynTriangleBadge>
<!-- 图片框 居中属性-->
<view style="display:flex; align-content:flex-end;justify-content: center; border:red 0px solid;"
:style="{'width':item.w+'px','height': item.h+'px'}">
<image :ref="'image'+index"
style="align-self: center;border-radius: 1px; "
:style="{'width' :item.w-10 +'px',
'height':item.h-10 +'px',
'border':[activeviewindex == index? '#EC6D2C 1px solid':'#EC6D2C 0px solid']}"
:src="item.url"
@click="clickimg(index,item)" mode="scaleToFill">
</image>
</view>
<!-- 描述视图 -->
<view style="display: flex;justify-content: center;margin-bottom: 4px;border: #008000 0px solid;">
<text v-if="showdec" style="align-self: center;font-size: 12px;color:white">{{item.dec}}</text>
</view>
</view>
<!-- 右侧留空 必须用min-width属性 用width属性无效-->
<view class="rightview" :style="{'min-width':sviewlst.rightview.w+'px','height':galleryheight+'px'}"></view>
</view>
</scroll-view>
</view>
</view>
</template>
<script>
import ynTriangleBadge from '../ynTriangleBadge/ynTriangleBadge.vue'
export default {
components: {
ynTriangleBadge,
},
name: 'ynGallery',
props: {
//背景起始色
bkstart: {
type: [String],
default: '#000000'
},
// 背景结束色
bkend: {
type: [String],
default: '#000000'
},
// 画廊高度 单位px
galleryheight: {
type: [Number,String],
default: 165 * 1.0
},
//图像源对象列表
images: {
type: Array,
},
//图像容器宽度
imgviewwidth: {
type: [Number],
default: parseInt(170 * 0.5)
},
//图像容器高度
imgviewheight: {
type: [Number],
default: parseInt(235 * 0.45)
},
showbadge:{
type: [Boolean],
default: false
},
showdec:{
type: [Boolean],
default: false
},
badegtype:{
type: [String],
default: 'trian' //round trian
},
badegwidth:{
type: [String],
default: "25"
},
badegheight:{
type: [String],
default: "25"
}
},
data() {
return {
//bkstart bkend不能在组件内赋值 该元素做中转
bkstartcolor: this.bkstart,
bkendcolor: this.bkend,
badegcolor:"red",
// 定时器 用来判断滑动是否结束
TTT: null,
// 这个变量用来判断是否进行了滑动操作
istouchmove: false,
// 手指是否离开了屏幕
isEndTouch: true,
// 屏幕中心点
screencenterpos: 0,
//当前焦点view块index序
activeviewindex: 0,
//焦点图中间点与屏幕中间点的偏移,通常不滑动的时候,焦点图总是显示在中间,且图的中间点总是与屏幕中间重合
offset: 0,
//这个用来定位具体的位置
scrollLeft: 0,
//当前距离左边的距离
newleft: 0,
//上一次距离左边的距离
oldleft: {
scrollleft: 0
},
//滚动组件内视图块数据定义
sviewlst: {
leftview: {}, //左则空块
rightview: {}, //右侧空块
imgsview: [] //中间image图像数组块
},
toview: "viewitem0",
};
},
created: function() {
if (this.images.length>0){
this.screencenterpos = parseInt(uni.upx2px(750) / 2);
this.upDataScrollviewLayout(this.activeviewindex);
}
// console.log=()=>{};
},
mounted: function() {},
watch: {
async images() {
var that = this;
console.log('watch监控到images属性变化');
this.screencenterpos = parseInt(uni.upx2px(750) / 2);
console.log("屏幕中点pos位置:" + this.screencenterpos + 'px');
this.upDataScrollviewLayout(this.activeviewindex);
},
},
computed: {
// 返回径向渐变样式值 用来设置背景 如果定义了每个image的主色(domiant)则会设置该主色作为径向渐变的起始色
bkstyle() {
return `radial-gradient(circle,${this.bkstartcolor}, ${this.bkendcolor})`
},
},
methods: {
SetBkRightAnimate:function (startcolor) {
var that = this;
var nums = 10;
//取2个颜色之间的过渡色
var colorarr = this.gradientColor(startcolor, this.bkendcolor, nums);
// console.log(colorarr)
let num = 10;
//渐显
var i = setInterval(function() {
that.bkstartcolor = colorarr[num - 1]
num--;
//0=最亮 所以这里也可以控制明暗
if (num < (10 / 2))
clearInterval(i);
}, 50);
},
endscroll: function(e) {
// console.log('endscorll')
},
//实时监控scrol位置 计算焦点图中点偏移
scroll: function(e) {
// console.log('检测到scroll 被触发......')
var that = this;
// console.log(e)
this.newleft = e.mp.detail.scrollLeft;
this.oldleft.scrollleft = this.newleft;
//scroll左边点+屏幕中点 总是随着拖动而变化
let cenpos = e.mp.detail.scrollLeft + this.screencenterpos;
// console.log('中锚点位置:'+cenpos);
for (let i in this.sviewlst.imgsview) {
let item = this.sviewlst.imgsview[i];
if ((item.l <= cenpos) && (item.r >= cenpos)) {
let imgcpos = item.l + parseInt(item.w / 2);
let aoffset = cenpos - imgcpos;
this.offset = aoffset;
this.upDataScrollviewLayout(i);
break;
}
}
},
//$emit 向上传递 所有父或者父父组件会依次接收到emit事件
clickimg(idx, imgviewobj) {
this.activeviewindex = idx
this.scrollLeft = this.sviewlst.imgsview[idx].l - parseInt(this.screencenterpos) + parseInt(this.sviewlst.imgsview[idx].w / 2);
this.$emit('clickimg',imgviewobj)
},
touchStartHandle(e) {
// 手指按到屏幕
this.istouchmove = false;
this.isEndTouch = false;
},
touchMoveHandle(e) {
// 手指滑动中
this.istouchmove = true;
},
touchEndHandle(e) {
// 手指离开屏幕
this.isEndTouch = true;
},
animationstartHandle() {
// 元素css动画开始事件
// console.log('animate is start')
},
animationendHandle() {
//渲染背景颜色(right动画)
let color = this.sviewlst.imgsview[this.activeviewindex].dominant;
//触发背景动画
this.SetBkRightAnimate(color);
},
//更新Scrollview内view块布局
//offset: 为实现滑动动画效果,需要临近的2张图片做呼吸效果(焦点图逐渐放大缩小,相领的图逐渐缩小放大),需要这个参数,
// offset参数在 滑动scrollview的实时回调函数中计算 offset暂时设置为全局变量
// offset相对于中点偏移,中点左边为负 右边为正 类似于线段图() 本函数会根据offset和最大放大系数来计算放大系数
// 焦点图中间点与屏幕中间点的偏移,通常不滑动的时候,焦点图总是显示在中间,且图的中间点总是与屏幕中间重合
// 当为负的时候,与左边的index 进行互斥放大和缩小,
// 当为0的时候,当前焦点图放到了最大
// 当为正的时候,与右边的index 进行互斥放大和缩小
upDataScrollviewLayout(activeindex) {
console.log('检测到 initScrollviewLayout');
var that = this;
this.upbkcolor = false;
var that = this;
if (this.images.length <= 0) {
return
};
var offset = this.offset;
//一、构造滚动组件内view块分布
//1、左view块 留空用 为了让第一张图片可以居中
var lview = {}
lview.dec = "left view"
lview.w = this.screencenterpos;
lview.h = this.imgviewheight;
lview.l = 0;
lview.r = lview.l + lview.w;
//2、处理中间imagelist块
//2.1、设计默认大小的imageview块布局
var arrimgview = [];
var i = 0;
while (i <= this.images.length - 1) {
let obj = { index:i,
url:'', //源
dec:'', //图像描述信息
badeg:'', //角标文字
badegcolor:this.badegcolor, //角标默认颜色
dominant :this.bkstartcolor, //默认主色
w: 0, //该view宽度
h: 0, //该view高度
l: 0, //该view块左边距scroll容器左边距离
r: 0, //该view右边距scroll容器左边距离
}
//合并外界传来image对象属性 若有重合的属性 后面的覆盖前面
let imgview=Object.assign(obj,this.images[i]);
//添加长宽等数据
imgview.w = this.imgviewwidth;
imgview.h = this.imgviewheight;
if (i == 0) {
imgview.l = lview.r + 0;
} else {
imgview.l = arrimgview[i - 1].r + 0;
}
imgview.r = imgview.l + imgview.w;
arrimgview.push(imgview);
i++;
};
//3、右边view块 留空用 为了让最后一张图片可以居中
let rview = {}
rview.dec = "right view"
//使得最后一张图片中间部分对齐屏幕正中间
rview.w = this.screencenterpos;
rview.h = this.imgviewheight;
if (arrimgview.length <= 0) {
rview.l = lview.r + 0;
} else {
rview.l = arrimgview[arrimgview.length - 1].r + 0;
}
rview.r = rview.l + rview.w;
//二、计算焦点图 焦点图左右临图的放大系数关系 修改相应块的高宽
var leftaf = 1;
var rightaf = 1;
var activeaf = 1;
var af = 0.18;
//左右临图与焦点图的系数计算(焦点图总是与左临图 或者 右临图发生进退大小关系(2张图的关系 构成视觉动画))
if (arrimgview.length > 0) {
let aindex = activeindex;
let lindex = parseInt(aindex) - 1;
let rindex = parseInt(aindex) + 1;
//取焦点imgview块(默认放大1.18倍))宽度的一半
let lw = (this.imgviewwidth * 1.18) / 2
//根据偏移取计算百分比
let bl = Math.abs(offset) / lw
// 计算焦点放大系数 默认最大1.18
if (offset == 0) {
activeaf = 1.18;
leftaf = 1;
rightaf = 1;
}
if (offset > 0) {
activeaf = 1 + 0.18 * (1 - bl / 2)
rightaf = 1 + (1.18 - activeaf)
leftaf = 1;
}
if (offset < 0) {
activeaf = 1 + 0.18 * (1 - bl / 2)
leftaf = 1 + (1.18 - activeaf)
rightaf = 1;
}
//设置焦点图放大系数
if (aindex >= 0 && aindex <= arrimgview.length - 1) {
arrimgview[aindex].w = this.imgviewwidth * activeaf;
arrimgview[aindex].h = this.imgviewheight * activeaf;
} else {
console.log("焦点图越界");
return;
};
//设置左临图 当offset小于0时,当前焦点图与左则相领图做拉扯动画
if (offset < 0) {
if (lindex >= 0) {
arrimgview[lindex].w = this.imgviewwidth * leftaf;
arrimgview[lindex].h = this.imgviewheight * leftaf;
}
}
//设置右临图 当offset大于0时,当前焦点图与右则相领图做拉扯动画
if (offset > 0) {
if (rindex <= arrimgview.length - 1) {
arrimgview[rindex].w = this.imgviewwidth * rightaf;
arrimgview[rindex].h = this.imgviewheight * rightaf;
}
}
}
//三、 修正左右边距,lveiw rview视图大小等
if (arrimgview.length > 0) {
lview.w = lview.w - (arrimgview[0].w / 2);
lview.r = lview.l + lview.w;
for (let i = 0; i <= arrimgview.length - 1; i++) {
if (i == 0) {
arrimgview[i].l = lview.r + 0;
} else {
arrimgview[i].l = arrimgview[i - 1].r + 0;
}
arrimgview[i].r = arrimgview[i].l + arrimgview[i].w;
};
rview.w = rview.w - (arrimgview[arrimgview.length - 1].w / 2) + 0;
rview.l = arrimgview[arrimgview.length - 1].r + 0;
rview.r = rview.l + rview.w;
}
//四、更新data数据 因为在template中进行了绑定 根据vue双向数据特性 会更新界面
var obj = {
'leftview': lview,
'rightview': rview,
'imgsview': arrimgview
};
this.activeviewindex = activeindex;
this.sviewlst = obj;
this.$nextTick(function() {
var that = this
if (this.istouchmove == true) {
clearTimeout(that.TTT);
var ai = that.activeviewindex;
var TTT = setTimeout(function() {
if (that.activeviewindex == ai) {
that.$emit('clickimg',that.sviewlst.imgsview[that.activeviewindex]);
}
}, 300)
}
})
},
/* 取2个颜色之间的过渡色 参考自网络
// startColor:开始颜色hex
// endColor :结束颜色hex
// count : 产生几个 也就是步长
// sample: colorarr = gradientColor(startcolor,endcolor,5); 生成5个过渡颜色
*/
gradientColor(startColor, endColor, count) {
let startRGB = this.colorToRgb(startColor); //转换为rgb数组模式
let startR = startRGB[0];
let startG = startRGB[1];
let startB = startRGB[2];
let endRGB = this.colorToRgb(endColor);
let endR = endRGB[0];
let endG = endRGB[1];
let endB = endRGB[2];
let sR = (endR - startR) / count; //总差值
let sG = (endG - startG) / count;
let sB = (endB - startB) / count;
var colorArr = [];
for (var i = 0; i < count; i++) {
//计算每一步的hex值
var hex = this.colorToHex('rgb(' + parseInt((sR * i + startR)) + ',' + parseInt((sG * i + startG)) + ',' +
parseInt((sB * i + startB)) + ')');
colorArr.push(hex);
}
return colorArr;
},
// 将hex表示方式转换为rgb表示方式(这里返回rgb数组模式)
colorToRgb(sColor) {
// <http://www.w3.org/TR/css3-color/#svg-color>
var names = {
aliceblue: "f0f8ff",
antiquewhite: "faebd7",
aqua: "0ff",
aquamarine: "7fffd4",
azure: "f0ffff",
beige: "f5f5dc",
bisque: "ffe4c4",
black: "000",
blanchedalmond: "ffebcd",
blue: "00f",
blueviolet: "8a2be2",
brown: "a52a2a",
burlywood: "deb887",
burntsienna: "ea7e5d",
cadetblue: "5f9ea0",
chartreuse: "7fff00",
chocolate: "d2691e",
coral: "ff7f50",
cornflowerblue: "6495ed",
cornsilk: "fff8dc",
crimson: "dc143c",
cyan: "0ff",
darkblue: "00008b",
darkcyan: "008b8b",
darkgoldenrod: "b8860b",
darkgray: "a9a9a9",
darkgreen: "006400",
darkgrey: "a9a9a9",
darkkhaki: "bdb76b",
darkmagenta: "8b008b",
darkolivegreen: "556b2f",
darkorange: "ff8c00",
darkorchid: "9932cc",
darkred: "8b0000",
darksalmon: "e9967a",
darkseagreen: "8fbc8f",
darkslateblue: "483d8b",
darkslategray: "2f4f4f",
darkslategrey: "2f4f4f",
darkturquoise: "00ced1",
darkviolet: "9400d3",
deeppink: "ff1493",
deepskyblue: "00bfff",
dimgray: "696969",
dimgrey: "696969",
dodgerblue: "1e90ff",
firebrick: "b22222",
floralwhite: "fffaf0",
forestgreen: "228b22",
fuchsia: "f0f",
gainsboro: "dcdcdc",
ghostwhite: "f8f8ff",
gold: "ffd700",
goldenrod: "daa520",
gray: "808080",
green: "008000",
greenyellow: "adff2f",
grey: "808080",
honeydew: "f0fff0",
hotpink: "ff69b4",
indianred: "cd5c5c",
indigo: "4b0082",
ivory: "fffff0",
khaki: "f0e68c",
lavender: "e6e6fa",
lavenderblush: "fff0f5",
lawngreen: "7cfc00",
lemonchiffon: "fffacd",
lightblue: "add8e6",
lightcoral: "f08080",
lightcyan: "e0ffff",
lightgoldenrodyellow: "fafad2",
lightgray: "d3d3d3",
lightgreen: "90ee90",
lightgrey: "d3d3d3",
lightpink: "ffb6c1",
lightsalmon: "ffa07a",
lightseagreen: "20b2aa",
lightskyblue: "87cefa",
lightslategray: "789",
lightslategrey: "789",
lightsteelblue: "b0c4de",
lightyellow: "ffffe0",
lime: "0f0",
limegreen: "32cd32",
linen: "faf0e6",
magenta: "f0f",
maroon: "800000",
mediumaquamarine: "66cdaa",
mediumblue: "0000cd",
mediumorchid: "ba55d3",
mediumpurple: "9370db",
mediumseagreen: "3cb371",
mediumslateblue: "7b68ee",
mediumspringgreen: "00fa9a",
mediumturquoise: "48d1cc",
mediumvioletred: "c71585",
midnightblue: "191970",
mintcream: "f5fffa",
mistyrose: "ffe4e1",
moccasin: "ffe4b5",
navajowhite: "ffdead",
navy: "000080",
oldlace: "fdf5e6",
olive: "808000",
olivedrab: "6b8e23",
orange: "ffa500",
orangered: "ff4500",
orchid: "da70d6",
palegoldenrod: "eee8aa",
palegreen: "98fb98",
paleturquoise: "afeeee",
palevioletred: "db7093",
papayawhip: "ffefd5",
peachpuff: "ffdab9",
peru: "cd853f",
pink: "ffc0cb",
plum: "dda0dd",
powderblue: "b0e0e6",
purple: "800080",
rebeccapurple: "663399",
red: "f00",
rosybrown: "bc8f8f",
royalblue: "4169e1",
saddlebrown: "8b4513",
salmon: "fa8072",
sandybrown: "f4a460",
seagreen: "2e8b57",
seashell: "fff5ee",
sienna: "a0522d",
silver: "c0c0c0",
skyblue: "87ceeb",
slateblue: "6a5acd",
slategray: "708090",
slategrey: "708090",
snow: "fffafa",
springgreen: "00ff7f",
steelblue: "4682b4",
tan: "d2b48c",
teal: "008080",
thistle: "d8bfd8",
tomato: "ff6347",
turquoise: "40e0d0",
violet: "ee82ee",
wheat: "f5deb3",
white: "fff",
whitesmoke: "f5f5f5",
yellow: "ff0",
yellowgreen: "9acd32"
};
var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
var sColor = sColor.toLowerCase();
//颜色常量转换
if (sColor.slice(0, 1) != "#") {
for (var name in names) {
if (name == sColor) {
var sColor = "#" + names[name];
}
}
}; {
if (sColor && reg.test(sColor)) {
if (sColor.length === 4) {
var sColorNew = "#";
for (var i = 1; i < 4; i += 1) {
sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
}
sColor = sColorNew;
}
//处理6位的颜色值
var sColorChange = [];
for (var i = 1; i < 7; i += 2) {
sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
}
return sColorChange;
} else {
return sColor;
}
}
},
// 将rgb表示方式转换为hex表示方式
colorToHex(rgb) {
var _this = rgb;
var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
if (/^(rgb|RGB)/.test(_this)) {
var aColor = _this.replace(/(?:\(|\)|rgb|RGB)*/g, "").split(",");
var strHex = "#";
for (var i = 0; i < aColor.length; i++) {
var hex = Number(aColor[i]).toString(16);
hex = hex < 10 ? 0 + '' + hex : hex; // 保证每个rgb的值为2位
if (hex === "0") {
hex += hex;
}
strHex += hex;
}
if (strHex.length !== 7) {
strHex = _this;
}
return strHex;
} else if (reg.test(_this)) {
var aNum = _this.replace(/#/, "").split("");
if (aNum.length === 6) {
return _this;
} else if (aNum.length === 3) {
var numHex = "#";
for (var i = 0; i < aNum.length; i += 1) {
numHex += (aNum[i] + aNum[i]);
}
return numHex;
}
} else {
return _this;
}
},
},
}
</script>
<style lang="scss" scoped="">
// 创建一张隐藏的画布 用于取色
.canvas-box {
margin-left: 500upx;
width: 0;
height: 0;
overflow: hidden
}
//画廊总容器 静态样式放这里 动态样式放template
.gallerypanel {
.scroll-view {
.scroll-view-panle {
display: flex;
height: 100%;
width: 100%;
white-space: nowrap;
.leftview {
//动态
}
.imgviewpanel {
.角标 {}
.imgview {
.图片 {}
}
.描述 {
.文本 {}
}
}
.rightview {
//动态
}
}
}
}
// 隐藏滚动条 hbx1.8版本 这样写有错误(伪类错误) 需要把这代码放到小程序工具的main.wsxx中去
// .gallerypanel ::-webkit-scrollbar {display: none;}
// .scroll-view ::-webkit-scrollbar {
// display: none;
// }
.roundbadge {
z-index: 2;
display: flex;
align-self: flex-end;
align-items: center;
justify-content: center;
font-size: 12px;
color: white;
border-radius: 8px;
min-width: 12px;
min-height: 12px;
max-height: 12px;
padding: 3px 5px;
margin-bottom: -17px; //17=12+5 12是圆角角标高度 5是图片中间的边距
margin-right : 3px; //右边距是5px 这里取3
}
* {
-webkit-overflow-scrolling: touch;
}
// 呼吸帧
@keyframes living {
0% {
// transform-origin:'center bottom';
transform: scale(1);
opacity: 1;
}
50% {
// transform-origin:'center bottom';
transform: scale(1.05);
opacity: 1;
/*圆形放大的同时,透明度逐渐减小为0*/
}
100% {
// transform-origin:'center bottom';
transform: scale(1);
opacity: 1;
}
}
.trans-fadeout {
// -webkit-transition:all 0.2s linear;
// -moz-transition:all 0.2s linear;
// -ms-transition:all 0.2s linear;
// -o-transition:all 0.2s linear;
animation: living 1s ease-in-out 1;
}
</style>