//计算视觉优先的图片宽高

functionwxAutoImageCal(originalWidth, originalHeight, that, bindName, temImage) {var arr =temImage.attr.style;var widthIndex = arr.indexOf("width:");

console.log(widthIndex);var widthValue = '';if (widthIndex != -1) {//widthValue = arr[widthIndex + 1];

console.log(arr);var trr = arr.split(";");///sophie

for(let i=0;i

widthValue=trr[i].split(":")[1];

}

}//console.log(trr);

console.log(widthValue);

}var percentageIndex = widthValue.search("%");var pixelIndex = widthValue.search("px");var percentageWidthValue = '';var pixelWidthValue = '';var pixelHeightValue = '';

console.log(percentageIndex);

console.log(pixelIndex);/**

* 获取width的百分比数值

* 因为widthValue是带有%和;的，例如宽度为50%，那么widthValue的数据格式为widthValue == "50%;"，

* 因此多出来后面两个字符'%;'，所以要去除后面两位*/

if ((percentageIndex > 0) && (widthValue.length == percentageIndex + 2)) {

percentageWidthValue= widthValue.slice(0, -2);

}/**

* 获取width的px数值

* 因为widthValue是带有px和;的，例如宽度为50px，那么widthValue的数据格式为widthValue == "50px;"，

* 因此多出来后面三个字符'px;'，所以要去除后面三位，

* 而当width为px显示时，height和width是成对出现的*/

if ((pixelIndex > 0) && (widthValue.length == pixelIndex + 2)) {

pixelWidthValue= widthValue.slice(0, -2);var heightIndex = arr.indexOf("height:");var heightValue = '';if (heightIndex != -1) {//heightValue = arr[heightIndex + 1];

console.log(arr);var hrr = arr.split(";");///sophie

for (let i = 0; i < hrr.length; ++i) {if (hrr[i].indexOf("height") != -1) {

heightValue= hrr[i].split(":")[1];

}

}

console.log(heightValue);

}var pixelHeightIndex = heightValue.search("px");if ((pixelHeightIndex > 0) && (heightValue.length == pixelHeightIndex + 2)) {

pixelHeightValue= heightValue.slice(0, -2);

}

}

console.log(pixelHeightValue);//获取图片的原始长宽

var windowWidth = 0, windowHeight = 0;var autoWidth = 0, autoHeight = 0;var results ={};var padding =that.data[bindName].view.imagePadding;

windowWidth= realWindowWidth - 2 *padding;

windowHeight=realWindowHeight;/**

* 1、如果图片的宽度style是百分比的参数形式，那么图片在微信中展示的宽度就定义为 手机屏幕宽度*宽度百分比；

* 2、如果图片的宽度style是px的参数形式，并且该宽度小于屏幕宽度，那么图片在微信中展示的宽、高就定义为 style所设置的宽、高；

* 3、此外，则按原插件逻辑进行图片大小定义，在图片width大于手机屏幕width时等比例缩放至屏幕大小，

* 未大于手机屏幕width时则按图片原尺寸显示*/

if(percentageWidthValue) {

autoWidth= (windowWidth * percentageWidthValue) / 100;

autoHeight= (autoWidth * originalHeight) /originalWidth;

results.imageWidth=autoWidth;

results.imageheight=autoHeight;

}else if (pixelWidthValue && pixelHeightValue && (pixelWidthValue <=windowWidth)) {

results.imageWidth=pixelWidthValue;

results.imageheight=pixelHeightValue;

}else{//判断按照那种方式进行缩放

//console.log("windowWidth" + windowWidth);

if (originalWidth > windowWidth) {//在图片width大于手机屏幕width时候

autoWidth =windowWidth;//console.log("autoWidth" + autoWidth);

autoHeight = (autoWidth * originalHeight) /originalWidth;//console.log("autoHeight" + autoHeight);

results.imageWidth =autoWidth;

results.imageheight=autoHeight;

}else {//否则展示原来的数据

results.imageWidth =originalWidth;

results.imageheight=originalHeight;

}

}returnresults;

}