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
online pharmacy no prescription http://easycanadianpharm.com/# easy canadian pharm
The People Who Are Closest To Buy B1 Driving License Online Without Exam Uncover Big Secrets köp körkort;
Chris,
online canadian pharmacy coupon https://megaindiapharm.shop/# MegaIndiaPharm
Why You’ll Need To Read More About I Will Buy A Category B Driving License
AnsöKan Om Nytt KöRkort
Buy King Shepherd Tools To Streamline Your Everyday Lifethe Only
Buy King Shepherd Trick That Every Person Must Learn buy king Shepherd
Bird African Grey For Sale Tools To Streamline Your Daily Life Bird African Grey For Sale Trick That Every Person Should Be
Able To Bird African Grey For Sale
10 Best Facebook Pages Of All-Time About Driving License A1 Ile Kosztuje Prawo Jazdy Na Skuter?
The 10 Most Terrifying Things About Purchase Wood Pallets purchase wood pallets – Demetrius –
What’s The Job Market For Buy A Category A Driving License Professionals
Like? Kup prawo jazdy B
Get To Know With The Steve Jobs Of The Buy Our C Driving License Gothenburg Industry
KöPa C KöRkort
5 Qualities That People Are Looking For In Every Containers
For Sale UK second hand Containers for sale uk
9 Things Your Parents Teach You About Gizmo The Grey Parrot gizmo the grey parrot
Why Upvc Door Repair Might Be Your Next Big Obsession upvc window & door repairs (Wanda)
Guide To African Grey Parrots Sale: The Intermediate Guide On African Grey Parrots Sale african grey parrots sale –
Pat,
Then You’ve Found Your Replacement Double Glazing Sealed Units …
Now What? buy replacement double glazed sealed units (Nelle)
10 Simple Ways To Figure Out Your Upvc Door Hinge upvc Window hinges near me
Speak “Yes” To These 5 Replacing Upvc Door Lock Tips replace window locks [Dorine]
The Secret Secrets Of Buy A Category B+ Driving License kupić prawo Jazdy bez egzaminu
9 Things Your Parents Teach You About 3 Wheeler Buggy 3 wheeler buggy – Andrea
–
reddit canadian pharmacy: easy canadian pharm – easy canadian pharm
Buy A Real Driving Licence UK Tips To Relax Your Daily Life Buy A Real Driving Licence UK Technique Every Person Needs To Be Able To buy a real driving licence uk
This Is How Buy Driving License B Online Will Look In 10 Years’ Time Kup Prawo Jazdy Polska
Nine Things That Your Parent Teach You About Tunnel Container tunnel container
– Annabelle –
10 Facts About Replacement Upvc Door Lock That Can Instantly Put You In An Upbeat
Mood window and Door lock Repair
Containers For Sale UK Tools To Streamline Your Daily Lifethe One Containers
For Sale UK Trick Every Individual Should Be Able To Containers For sale uk
legit non prescription pharmacies http://discountdrugmart.pro/# discount drug mart pharmacy
Where Can You Find The Most Reliable Suzie The Yorkie
Puppy Information? Arvin biewer yorkshire Terrier mini kaufen
canadian pharmacy no prescription https://xxlmexicanpharm.com/# xxl mexican pharm
20 Resources That Will Make You More Effective At Purebred German Shepherd altdeutscher schäferhund kaufen (Michal)
10 Locations Where You Can Find Renew Driver’s License trafikverket skövde förnya Körkort