layer.photos 放大缩小， 旋转

1.旋转
最后做图片旋转，因为 layer.photos目前不支持旋转，缩放，所以自己研究了一下。直接上代码

$(document).on("click", ".layui-layer-phimg", function (e) {
/*var current = $("#current").val();
current = (current+90)%360;
$("#current").val(current);
document.getElementById('imglayer').style.transform = 'rotate('+current+'deg)';*/
var current = $("#current").val();
if (current == 0) {
current = 90;
}else if (current == 90) {
current = 180;
}else if(current == 180) {
current = 270;
}else if (current == 270) {
current = 0;
}
document.getElementById('imglayer').style.transform = 'rotate(' + current + 'deg)';
$("#current").val(current);
});

layer.js 修改

content: '<input type="hidden" id="current"><div class="layui-layer-phimg"><img id="imglayer" src="' + u[d].src + '" alt="' + (u[d].alt || "") + '" layer-pid="' + u[d].pid + '"><div class="layui-layer-imgbar" style="width:100%;height: 100%; background-color:rgba(0, 0, 0, 0)"></div><div class="layui-layer-imgsee">' + (u.length > 1 ? '<span class="layui-layer-imguide"><a href="javascript:;" class="layui-layer-iconext layui-layer-imgprev"></a><a href="javascript:;" class="layui-layer-iconext layui-layer-imgnext"></a></span>' : "") + '<div class="layui-layer-imgbar" style="display:' + (a ? "block" : "") + '"><span class="layui-layer-imgtit"><a href="javascript:;">' + (u[d].alt || "") + "</a><em>" + s.imgIndex + "/" + u.length + "</em></span></div></div></div>",

2.缩放

layer.photos本省可以缩放，但是效果不太理想

$(document).on("mousewheel DOMMouseScroll", ".layui-layer-phimg", function (e) {
var delta = (e.originalEvent.wheelDelta && (e.originalEvent.wheelDelta > 0 ? 1 : -1)) || // chrome & ie
(e.originalEvent.detail && (e.originalEvent.detail > 0 ? -1 : 1)); // firefox
var imagep = $(".layui-layer-phimg").parent().parent();
var image = $(".layui-layer-phimg").parent();
var h = image.height();
var w = image.width();
if (delta > 0) {
if (h < (window.innerHeight)) {
h = h * 1.05;
w = w * 1.05;
}
} else if (delta < 0) {
if (h > 100) {
h = h * 0.95;
w = w * 0.95;
}
}
imagep.css("top", (window.innerHeight - h) / 2);
imagep.css("left", (window.innerWidth - w) / 2);
image.height(h);
image.width(w);
imagep.height(h);
imagep.width(w);
});

最后

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