需求

图片点击后，宽度满屏

问题

viewer.js 在预览图片时，默认是0.9的倍数

修改viewer.js

initImage: function initImage(done) {
...
sizingImage = getImageNaturalSizes(image, function (naturalWidth, naturalHeight) {
        var aspectRatio = naturalWidth / naturalHeight;
        var width = viewerWidth;
        var height = viewerHeight;
        _this2.imageInitializing = false;

        if (viewerHeight * aspectRatio > viewerWidth) {
          height = viewerWidth / aspectRatio;
        } else {
          width = viewerHeight * aspectRatio;
        }

        width = Math.min(width * 0.9, naturalWidth);   //这里的0.9 改为1 即可
        height = Math.min(height * 0.9, naturalHeight); //这里的0.9 改为1 即可