echarts 도표 선명도 문제 처리

7504 단어 ECharts
검색:
createDom;
Layer.prototype
수정은 해당합니다.
initContext: function () {
    this.ctx = this.dom.getContext('2d');

    this.ctx.dpr = this.dpr*3;
},
/**
 *  dom
 *
 * @inner
 * @param {string} id dom id  
 * @param {string} type dom type,such as canvas, div etc.
 * @param {Painter} painter painter instance
 * @param {number} number
 */
function createDom(id, type, painter, dpr) {
    var newDom = document.createElement(type);
    var width = painter.getWidth();
    var height = painter.getHeight();

    var newDomStyle = newDom.style;
    //  append , , ~
    newDomStyle.position = 'absolute';
    newDomStyle.left = 0;
    newDomStyle.top = 0;
    newDomStyle.width = width + 'px';
    newDomStyle.height = height + 'px';
    newDom.width = width * dpr *3;
    newDom.height = height * dpr *3;

    // id , , 
    newDom.setAttribute('data-zr-dom-id', id);
    return newDom;
}

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