Method loadImagePromise

src/common/mapping/WebMapV2.js:1987–2019

(src)

          svgExpresssion.push('');

          const loadImagePromise = (src) => {
            return new Promise((resolve) => {
              if (src.indexOf('svg') < 0) {
                this.map.loadImage(src, (error, image) => {
                  if (error) {
                    console.log(error);
                    resolve(error);
                    return;
                  }
                  !this.map.hasImage(src) && this.map.addImage(src, image);
                  resolve({ src, image });
                });
              } else {
                if (!this._svgDiv) {
                  this._svgDiv = document.createElement('div');
                  document.body.appendChild(this._svgDiv);
                }
                this.getCanvasFromSVG(src, this._svgDiv, (canvas) => {
                  this.handleSvgColor(defultLayerStyle, canvas);
                  this.map.loadImage(canvas.toDataURL('img/png'), (error, image) => {
                    if (error) {
                      console.log(error);
                      resolve(error);
                      return;
                    }
                    // sdf: true 可以设置icon-color
                    !this.map.hasImage(src) && this.map.addImage(src, image, { sdf: true });
                    resolve({ src, image });
                  });
                });
              }
            });
          };
          const promiseList = [];
          imageList.forEach((src) => {
            promiseList.push(loadImagePromise(src));