书法网站建站目标,如何建立网站自己做站长,o2o网站大全,镇江教育云平台网站建设特性#xff1a; 支持缩放瓦片图#xff0c;定义瓦片图初始缩放比例#xff0c;以鼠标所在位置为中心缩放支持局部拖拽加载 sgTileImage源码
templatediv :class$options.namediv classsg-ctrllabel缩放百分比 支持缩放瓦片图定义瓦片图初始缩放比例以鼠标所在位置为中心缩放支持局部拖拽加载 sgTileImage源码
templatediv :class$options.namediv classsg-ctrllabel缩放百分比/labelel-input-number stylewidth: 150px; v-model.trimscaleValue :precision0 :step10 :min10 :max100:controls-positionleft changechangeScaleValue //divdiv classsg-tile-img refscrollContainerdiv refdragContainer :style{ width: ${tileSize * colCount}px }img v-for(a, i) in tiles :keyi :reftile${i} :loadeda.loaded :widthtileSize:heighttileSize draggablefalse/div/divsgDragMoveTile :datadragMoveTileData dragMovedragMove //div
/template
script
import sgDragMoveTile from /vue/components/admin/sgDragMoveTile;
export default {name: sgTileImage,components: {sgDragMoveTile},data() {return {dragMoveTileData: {},scaleValue: 100,orginTileSize: 0,tileSize: 0,colCount: 0,rowCount: 0,tiles: [],//瓦片图数组mousePoint_bk: null,}},props: [data,/* data格式:{orginTileSize:500,//瓦片图原始尺寸colCount: 20,//行数rowCount: 20,//列数scaleValue: 100,//缩放百分比tiles: [],//瓦片图数组} */],watch: {data: {handler(newValue, oldValue) {if (newValue Object.keys(newValue).length) {newValue.orginTileSize (this.orginTileSize newValue.orginTileSize);newValue.colCount (this.colCount newValue.colCount);newValue.rowCount (this.rowCount newValue.rowCount);newValue.scaleValue (this.scaleValue newValue.scaleValue);newValue.tiles (this.tiles newValue.tiles);this.$nextTick(() { this.loadScreenViewTiles(); });}},deep: true,//深度监听immediate: true,//立即执行},scaleValue: {handler(newValue, oldValue) {this.tileSize this.orginTileSize * newValue / 100;this.$nextTick(() { this.loadScreenViewTiles(); });},deep: true,//深度监听immediate: true,//立即执行},},destroyed() {removeEventListener(mousewheel, this.mousewheel);},mounted() {this.dragMoveTileData {scrollContainer: this.$refs.scrollContainer,dragContainer: this.$refs.dragContainer,}let rect_scrollContainer this.$refs.scrollContainer.getBoundingClientRect();this.mousePoint_bk {x: rect_scrollContainer.width / 2,y: rect_scrollContainer.height / 2,};setTimeout(() {this.loadScreenViewTiles();addEventListener(mousewheel, this.mousewheel, { passive: false });}, 1000);},methods: {// 校正放大缩小后瓦片图的坐标目的是为了让缩放看起来是以鼠标坐标为中心点centerPosition(e, {rect_dragContainer_orign,scrollLeft_orgin,scrollTop_orgin,mousePoint }) {let scrollContainer this.$refs.scrollContainer;let dragContainer this.$refs.dragContainer;let rect_dragContainer dragContainer.getBoundingClientRect();let scale rect_dragContainer.width / rect_dragContainer_orign.width;//缩放比例let mouse_left_dis_orgin scrollLeft_orgin mousePoint.x;//缩放前鼠标距离瓦片图最左侧的距离let mouse_top_dis_orgin scrollTop_orgin mousePoint.y;//缩放前鼠标距离瓦片图最顶部的距离let mouse_left_dis mouse_left_dis_orgin * scale;//缩放后鼠标距离瓦片图最左侧的距离let mouse_top_dis mouse_top_dis_orgin * scale;//缩放后鼠标距离瓦片图最顶部的距离let scrollLeft mouse_left_dis - mousePoint.x;let scrollTop mouse_top_dis - mousePoint.y;scrollContainer.scrollLeft scrollLeft;scrollContainer.scrollTop scrollTop;this.mousePoint_bk mousePoint;},mousewheel(e) {// 记录缩放前的数据let rect_dragContainer_orign this.$refs.dragContainer.getBoundingClientRect();let scrollContainer this.$refs.scrollContainer;let mousePoint { x: e.x, y: e.y };let scrollLeft_orgin scrollContainer.scrollLeft;let scrollTop_orgin scrollContainer.scrollTop;// 开始缩放e.deltaY 0 (this.scaleValue 10);e.deltaY 0 (this.scaleValue - 10);// 开始计算坐标this.$nextTick(() {this.centerPosition(e, {rect_dragContainer_orign,scrollLeft_orgin,scrollTop_orgin,mousePoint})});e.preventDefault e.preventDefault();//阻止默认的滚轮事件return false;},// 获取浏览器可视范围的瓦片图并加载图片loadScreenViewTiles(d) {let scrollContainer this.$refs.scrollContainer;if (scrollContainer) {let rect_scrollContainer scrollContainer.getBoundingClientRect();this.tiles.forEach((v, i) {let tile this.$refs[tile${i}];if (tile) {tile tile[0];let rectTile tile.getBoundingClientRect();if (rectTile.x rectTile.width rect_scrollContainer.x - rectTile.width rectTile.y rectTile.height rect_scrollContainer.y - rectTile.height rectTile.x rect_scrollContainer.x rect_scrollContainer.width rectTile.y rect_scrollContainer.y rect_scrollContainer.height) {tile.onload d { v.loaded true; };tile.src v.img;}}});}},dragMove(d) {this.loadScreenViewTiles();},changeScaleValue(d) {this.mousewheel(this.mousePoint_bk);},},
};
/script
style langscss scoped .sgTileImage {.sg-ctrl {position: absolute;left: 10px;top: 10px;z-index: 1;box-sizing: border-box;padding: 10px 20px;background-color: white;box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);border-radius: 4px;display: flex;align-items: center;justify-content: flex-end;label {margin-right: 10px;}}.sg-tile-img {position: absolute;left: 0;top: 0;overflow: auto;width: 100%;height: 100%;div {display: flex;flex-wrap: wrap;img {border: none;opacity: 0;transition: opacity .382s;[loaded] {opacity: 1;}}}}}
/style 用例
templatedivsgTileImage :datatileImageData //div
/template
script
import sgTileImage from /vue/components/admin/sgTileImage;
export default {components: { sgTileImage },data() {return {tileImageData: {orginTileSize: 500,//瓦片图原始尺寸colCount: 20,//行数rowCount: 20,//列数tiles: [],//瓦片图数组}}},created() {this.tileImageData.tiles [...Array(this.tileImageData.colCount * this.tileImageData.rowCount)].map((v, i) ({loaded: false,img: http://shuzhiqiang.com/tiles/${i}.jpg,}));//瓦片图数组},};
/script
依赖组件【sgDragMoveTile】自定义组件拖拽瓦片图、地图、大图滚动条对应同步滚动_你挚爱的强哥的博客-CSDN博客【代码】【sgDragMoveTile】自定义组件拖拽瓦片图、地图、大图滚动条对应同步滚动。https://blog.csdn.net/qq_37860634/article/details/133292981
