透過網頁讀取PSD後，依圖層輸出PNG檔案
在前面介紹過網頁可以讀取PSD檔案並擷取到該檔案的資訊，接著我們會希望能透過網頁上傳PSD檔之後，依照圖層來輸出圖片，同樣是利用PSD.js來輔助進行，可以透過我們製作的範例頁面來進行輸出測試。
預設輸出效果
透過PSD.js可將PSD內的各圖層輸出成PNG圖檔，亦可轉成Base 64圖檔格式，惟輸出時每個圖檔的尺寸並不會根據整體PSD檔大小來配置。
<!DOCTYPE html>
<html>
<head>
<title>psd.js image example</title>
<style type="text/css">
body, html {
padding: 0;
margin: 0;
}
#dropzone {
width: 500px;
height: 100px;
border: 1px #ababab dashed;
margin: 50px auto;
}
#dropzone p {
text-align: center;
line-height: 100px;
margin: 0;
padding: 0;
}
#image {
text-align: center;
}
</style>
<script type="text/javascript" src="psd.min.js"></script>
</head>
<body>
<div id="dropzone">
<p>Drop PSD here</p>
</div>
<div id="image"></div>
<pre id="data"></pre>
<script type="text/javascript">
(function () {
const PSD = require('psd');
document.getElementById('dropzone').addEventListener('dragover', onDragOver, true);
document.getElementById('dropzone').addEventListener('drop', onDrop, true);
function onDragOver(e) {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
}
function onDrop(e) {
e.stopPropagation();
e.preventDefault();
PSD.fromEvent(e).then(function (psd) {
for (var i = 0; i < psd.layers.length; i ++){
document.getElementById('image').appendChild(psd.layers[i].image.toPng());
}
});
}
}());
</script>
</body>
</html>
依照整體PSD配置進行輸出
我們希望讓每個圖片在輸出後能保時相同的尺寸，也就是依照PSD的畫布大小來輸出每一張圖檔，但在原生PSD.js中並不具備這樣的功能，於是我們透過下述的方式來達成：
- 擷取PSD資訊並將圖檔轉為Base 64格式
- 產生與PSD尺寸大小相同的HTML Canvas
- 將產生的Base 64圖檔，依照原始位置放入Canvas中
- 將Canvas轉成PNG圖檔
可以參考我們製作的範例頁面
<!DOCTYPE html>
<html>
<head>
<title>psd.js image example</title>
<style type="text/css">
body, html {
padding: 0;
margin: 0;
}
#dropzone {
width: 500px;
height: 100px;
border: 1px #ababab dashed;
margin: 50px auto;
}
#dropzone p {
text-align: center;
line-height: 100px;
margin: 0;
padding: 0;
}
#image {
text-align: center;
}
</style>
<script type="text/javascript" src="psd.min.js"></script>
</head>
<body>
<div id="dropzone">
<p>Drop PSD here</p>
</div>
<div id="image"></div>
<pre id="data"></pre>
<script type="text/javascript">
(function () {
const PSD = require('psd');
document.getElementById('dropzone').addEventListener('dragover', onDragOver, true);
document.getElementById('dropzone').addEventListener('drop', onDrop, true);
function onDragOver(e) {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
}
function onDrop(e) {
e.stopPropagation();
e.preventDefault();
PSD.fromEvent(e).then(function (psd) {
const PSDWidth = psd.tree().width;
const PSDHeight = psd.tree().height;
for (var i = 0; i < psd.layers.length; i ++){
const img = new Image();
img.src = psd.layers[i].image.toBase64();
console.log(psd);
const layerWidth = psd.layers[i].width;
const layerHeight = psd.layers[i].height;
const layerLeft = psd.layers[i].left;
const layerTop = psd.layers[i].top;
const canvas = document.createElement("canvas");
canvas.setAttribute('class', "canvas");
canvas.width = PSDWidth;
canvas.height = PSDHeight;
console.log("canvas :", canvas);
img.onload = function(){
canvas.getContext("2d").drawImage(img, layerLeft, layerTop, layerWidth, layerHeight);
document.getElementById('image').appendChild(canvas);
}
}
});
}
}());
</script>
</body>
</html>
PSD檔案輸出限制
1. 無法輸出帶有效果的圖片
在PSD中我們可能會針對圖層套用一些效果，例如：陰影、光暈、筆畫…等等，但在輸出後的圖檔將不會帶有這些效果。
解決方法：透過點陣化圖層效果，即可輸出相對應的圖檔。
2. 無法輸出帶有遮色片效果的圖片
解決方法：將圖層轉為智慧型物件，即可輸出相對應的圖檔。
3. 無法依圖層混合模式輸出圖片
解決方法：無法解決
Diosa brought me to the CrashPad. I used to be drawn to the revolutionary act of queer/trans POC making queer porn for other queer and trans
POC.
I used to be recommended this web site by way of my cousin. I am now not
positive whether this post is written by
means of him as no one else recognize such particular approximately my trouble.
You are amazing! Thanks!
Why Nobody Cares About Window.Replacement Near Me Window replacement
I needed to thank you for this wonderful read!! I definitely loved every bit of it.
I have got you book-marked to check out new things you post…
rogaine online buy – proscar without prescription propecia 5mg cheap
美女做愛
Wow that was unusual. I just wrote an really long comment but
after I clicked submit my comment didn’t appear.
Grrrr… well I’m not writing all that over again. Anyhow, just wanted to say excellent blog!
watch porn video
Thank you for the good writeup. It in fact was a amusement account
it. Look advanced to far added agreeable from you!
However, how could we communicate?
The Most Hilarious Complaints We’ve Heard About Veterans Disability Claim veterans disability Law firms
14 Cartoons About Medical Malpractice Claim To Brighten Your Day medical Malpractice lawsuits
Insider Business Card Marketing Ideas 프리랜서 대출
Hi there, of course this post is actually nice and I have learned lot of things from it concerning blogging.
thanks.
If you would like to grow your experience just keep visiting this website and be updated with the newest
news posted here.
Ten Malpractice Lawyers Myths You Should Never Share On Twitter Malpractice Lawsuits
The iconic Anfield https://enfield.liverpool-fr.com stadium and the passionate Liverpool fans are an integral part of English football culture.
buy leflunomide without prescription – cheap cartidin without prescription cartidin where to buy
My brother recommended I might like this website.
He was entirely right. This post truly made my day. You can not imagine simply how much time I had spent
for this info! Thanks!
Abandon Visa Or Master Card Processing? Use Cash Entirely?
Not! 다바오 강아지 동반 호텔
Nice answer back in return of this query
with solid arguments and explaining everything about that.
Its like you read my mind! You seem to know a lot about this, like you wrote the book in it or something.
I think that you can do with some pics to drive the message home a bit, but other than that, this is magnificent blog.
A fantastic read. I will certainly be back.
Ten Reasons To Hate People Who Can’t Be Disproved Double Glazing Suppliers Near Me replacing double glazing glass
Medical Malpractice Attorneys: It’s Not As Difficult As You
Think medical malpractice Lawsuits
Hey there! I know this is kinda off topic however I’d figured
I’d ask. Would you be interested in exchanging links or maybe guest authoring a blog post or vice-versa?
My website goes over a lot of the same topics as yours and I
believe we could greatly benefit from each other. If you’re interested feel free to shoot
me an e-mail. I look forward to hearing from you!
Excellent blog by the way!
The Reasons 18 Wheeler Lawyer Is Tougher Than You Imagine 18 Wheeler accidents
You’ll Never Be Able To Figure Out This Double Glaze Repair Near Me’s
Tricks Double Glaze Repair Near Me (Minecraftathome.Com)
It’s really very complex in this busy life to listen news on Television, so
I simply use web for that reason, and get the newest information.
Nine Things That Your Parent Teach You About Malpractice Claim Malpractice Attorney
How To Get A Bank Loan With Poor Credit 농협 무직자 대출
I am extremely impressed along with your writing talents and
also with the layout on your blog. Is that this a paid theme or did you
modify it your self? Anyway stay up the excellent high quality writing,
it is uncommon to see a nice blog like this one these days..
Why Truck Accident Lawsuit Should Be Your Next Big
Obsession? truck accident attorneys