Method setContext

src/common/overlay/levelRenderer/Shape.js:360–384

* @function LevelRenderer.Shape.prototype.setContext * @description 设置 fillStyle, strokeStyle, shadow 等通用绘制样式。 * * @param {CanvasRenderingContext2D} ctx - Context2D 上下文。 * @param {Object} style - 样式。 *

(ctx, style)

     *
     */
    setContext(ctx, style) {
        var STYLE_CTX_MAP = [
            ['color', 'fillStyle'],
            ['strokeColor', 'strokeStyle'],
            ['opacity', 'globalAlpha'],
            ['lineCap', 'lineCap'],
            ['lineJoin', 'lineJoin'],
            ['miterLimit', 'miterLimit'],
            ['lineWidth', 'lineWidth'],
            ['shadowBlur', 'shadowBlur'],
            ['shadowColor', 'shadowColor'],
            ['shadowOffsetX', 'shadowOffsetX'],
            ['shadowOffsetY', 'shadowOffsetY']
        ];

        for (var i = 0, len = STYLE_CTX_MAP.length; i < len; i++) {
            var styleProp = STYLE_CTX_MAP[i][0];
            var styleValue = style[styleProp];
            var ctxProp = STYLE_CTX_MAP[i][1];

            if (typeof styleValue != 'undefined') {
                ctx[ctxProp] = styleValue;
            }
        }
    }


    /**