生成iPhone AppIcon多种尺寸图标
根据拖拽进来的1024*1024px的图片,动态生成iPhone AppIcon多种尺寸图标
拖拽文件到这里
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| <!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>AppIcon 生成</title>
<style type="text/css">
html,body{
height: 100%;
margin: 0;
padding: 0;
}
#dragfile{
width: 900px;
height: 200px;
box-sizing: border-box;
margin: 10px auto;
border: 1px dashed #ccc;
text-align: center;
line-height: 200px;
background-color: #f2f2f2;
}
#dragfile img{
max-height: 200px;
max-width: 900px;
}
.filecontainer{
width: 900px;
margin: 10px auto;
}
.filewrap{
display: flex;
flex-flow: row wrap;
margin: 0 -10px;
}
.filewrap>div{
width: 33.33%;
text-align: center;
padding: 10px;
box-sizing: border-box;
position: relative;
}
.filewrap .box{
width: 280px;
height: 280px;
line-height: 280px;
background-color: #f2f2f2;
border: 1px dashed #ccc;
cursor: pointer;
}
.filewrap .box canvas{
max-width: 280px;
}
.filewrap p{
position: absolute;
left: 0;
text-align: center;
width: 100%;
top: 50%;
margin-top: -0.5em;
line-height: 2;
}
.filewrap .box:hover p{
display: none;
}
</style>
</head>
<body>
<div id="dragfile">拖拽文件到这里</div>
<div class="filecontainer">
<div class="filewrap">
<div>
<div class="box">
<canvas id="canvas1"></canvas>
<p>1024*1024px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas2"></canvas>
<p>58*58px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas3"></canvas>
<p>87*87px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas4"></canvas>
<p>40*40px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas5"></canvas>
<p>80*80px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas6"></canvas>
<p>120*120px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas7"></canvas>
<p>60*60px</p>
</div>
</div>
<div>
<div class="box">
<canvas id="canvas8"></canvas>
<p>180*180px</p>
</div>
</div>
</div>
</div>
<script type="text/javascript" >
var fileBox = document.getElementById('dragfile');
fileBox.addEventListener('dragover', function (ev) {
ev.preventDefault();
}, false);
fileBox.addEventListener('drop', function (ev) {
ev.preventDefault();
var reader = new FileReader();
reader.onload = function (e) {
var data = e.target.result;
if (data.substring(0, 10) === 'data:image') {
console.log(data);
var img = new Image();
img.onload =function (e) {
if (img.width >= 1024 && img.height >= 1024) {
generateImages(img);
fileBox.innerHTML = '';
fileBox.appendChild(img);
}
};
img.src = data;
}
};
reader.onerror = function (e) {
console.log('FileReader error:', e.target.error.message);
};
reader.readAsDataURL(ev.dataTransfer.files[0]);
}, false);
function generateImages(image) {
var canvas, ctx, canvasSize, remark;
for (var i = 1; i <= 8; i++) {
canvas = document.getElementById('canvas' + i);
remark = canvas.parentNode.querySelector('p');
canvasSize = parseInt(remark.innerHTML.replace(/^\D*(\d+)\*.+$/,'$1'));
canvas.width = canvasSize;
canvas.height = canvasSize;
ctx = canvas.getContext('2d');
ctx.drawImage(image, 0, 0, canvasSize, canvasSize);
}
}
</script>
</body>
</html>
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