Function setPatternnSource

_benchmarks/sample_echarts.js:27189–27389

(pattern)

      return pattern;

      function setPatternnSource(pattern) {
        var keys = [dpr];
        var isValidKey = true;

        for (var i = 0; i < decalKeys.length; ++i) {
          var value = decalOpt[decalKeys[i]];
          var valueType = typeof value;

          if (value != null && !isArray(value) && valueType !== 'string' && valueType !== 'number' && valueType !== 'boolean') {
            isValidKey = false;
            break;
          }

          keys.push(value);
        }

        var cacheKey;

        if (isValidKey) {
          cacheKey = keys.join(',') + (isSVG ? '-svg' : '');
          var cache = decalCache.get(cacheKey);

          if (cache) {
            isSVG ? pattern.svgElement = cache : pattern.image = cache;
          }
        }

        var dashArrayX = normalizeDashArrayX(decalOpt.dashArrayX);
        var dashArrayY = normalizeDashArrayY(decalOpt.dashArrayY);
        var symbolArray = normalizeSymbolArray(decalOpt.symbol);
        var lineBlockLengthsX = getLineBlockLengthX(dashArrayX);
        var lineBlockLengthY = getLineBlockLengthY(dashArrayY);
        var canvas = !isSVG && createCanvas();
        var svgRoot = isSVG && zr.painter.createSVGElement('g');
        var pSize = getPatternSize();
        var ctx;

        if (canvas) {
          canvas.width = pSize.width * dpr;
          canvas.height = pSize.height * dpr;
          ctx = canvas.getContext('2d');
        }

        brushDecal();

        if (isValidKey) {
          decalCache.put(cacheKey, canvas || svgRoot);
        }

        pattern.image = canvas;
        pattern.svgElement = svgRoot;
        pattern.svgWidth = pSize.width;
        pattern.svgHeight = pSize.height;
        /**
         * Get minumum length that can make a repeatable pattern.
         *
         * @return {Object} pattern width and height
         */