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
It’s very effortless to find out any topic on net as compared to books, as I
found this article at this site.
15 Up-And-Coming Upvc Repairs Near Me Bloggers You Need
To Follow upvc windows Repairs Near me (http://www.cheaperseeker.com)
I’m curious to find out what blog platform you’re using?
I’m having some small security issues with my latest site and I would like to find something more risk-free.
Do you have any recommendations?
An interesting discussion is definitely worth comment.
I believe that you ought to publish more on this topic, it might not be a taboo subject but generally people don’t discuss such issues.
To the next! Kind regards!!
My relatives all the time say that I am killing my time here at
net, but I know I am getting knowledge all the time
by reading such good content.
I’m not sure why but this site is loading incredibly slow for me.
Is anyone else having this problem or is it a problem
on my end? I’ll check back later and see if the problem
still exists.
Organic Search Engine Website Optimization And Keyword Research
Techniques 검색엔진최적화 seo
Watch Out: How Nissan Juke Key Replacement Is Taking Over And What
You Can Do About It nissan Qashqai spare key
I am really impressed along with your writing skills and also with
the layout for your weblog. Is this a paid subject matter
or did you customize it yourself? Either way
stay up the nice high quality writing, it’s rare to peer a nice blog like this one these days..
Thanks a bunch for sharing this with all folks you really know what you are talking approximately!
Bookmarked. Please additionally talk over with my site =).
We could have a link change contract between us
Tod Peck is what his wife loves to call him but he never really liked that name.
For years she’s been working for a payroll clerk.
The thing he adores most through using keep birds and they’re trying
to make it a profession. District of Columbia has always been his natural.
The Best Bad Credit Secured Loan 신혼부부 대출
9 Lessons Your Parents Teach You About Replace Upvc
Window Handle replace upvc window handle (Dominic)
Excellent article. I’m going through some of these issues as well..
5 Killer Quora Answers To Motorcycle Accident Attorneys motorcycle
accident attorneys [Doug]
Good answer back in return of this matter with genuine arguments and explaining the whole thing concerning that.
Tips To Get Free Visitors To Your Website 구글상위노출 회사 (http://benefitfocussucks.net/)
I have been browsing on-line greater than three hours today, but I never found
any fascinating article like yours. It’s lovely value enough for me.
In my view, if all web owners and bloggers made just right content material as you
did, the net will be a lot more useful than ever before.
What Experts From The Field Of Cheap Wood Burning Stoves Want You To Be Able To http://www.913875.xyz
Your style is really unique compared to other people
I have read stuff from. I appreciate you for posting when you have the opportunity, Guess
I’ll just bookmark this page.
Demo Slot Twilight Princess Tips To Relax Your Daily Life Demo Slot Twilight Princess Trick That Everybody Should Learn demo slot twilight princess
リアル ラブドールNeither will the love life satisfy if one’s attitude towards one’s partner is a cavalier,‘let us see’ style.
Discover Google Search Optimization Website Promotion 구글상위노출 대행사 [https://brahambouchnak.blog.idnes.cz/redir.aspx?url=https://rentry.co/57rduwpf]
Is Your Company Responsible For A Sash Windows Repair
Budget? Twelve Top Ways To Spend Your Money upvc Windows repairs near me
This last finding is especially noteworthy because it adds to my previous post on sex differences between women and men in terms of what they look for in a mate.オナホ ラブドールThat is,
How Upvc Door And Window Became The Hottest Trend In 2023 Flush Casement
Windows Upvc (Wulff-Linnet-2.Technetbloggers.De)
Saved as a favorite, I love your web site!
人形 エロThis Pennsylvania mountain region,a gentile answer to the Jewish Catskills,
ラブドール えろAnd in a kitchen.And in a gym.
Preference for frequent sexual contacts is not necessarily the same as being sexually indiscriminating.ラブドール エロThe latter,