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
https://indianpharmacy.shop/# reputable indian online pharmacy indianpharmacy.shop
http://canadianpharmacy.pro/# canadian mail order pharmacy canadianpharmacy.pro
indianpharmacy com
indian pharmacy indian pharmacy mail order pharmacy india indianpharmacy.shop
Heya i am for the first time here. I came across
this board and I find It really useful & it helped me out much.
I am hoping to present one thing back and aid others like you aided me.
https://mexicanpharmacy.win/# mexican drugstore online mexicanpharmacy.win
online shopping pharmacy india
canadian pharmacy meds reviews Pharmacies in Canada that ship to the US canadian pharmacies canadianpharmacy.pro
http://mexicanpharmacy.win/# mexico pharmacies prescription drugs mexicanpharmacy.win
http://indianpharmacy.shop/# india pharmacy indianpharmacy.shop
https://mexicanpharmacy.win/# mexican border pharmacies shipping to usa mexicanpharmacy.win
indian pharmacies safe
canada drugs online review Cheapest drug prices Canada canada rx pharmacy canadianpharmacy.pro
http://indianpharmacy.shop/# п»їlegitimate online pharmacies india indianpharmacy.shop
pharmacy website india
http://canadianpharmacy.pro/# pet meds without vet prescription canada canadianpharmacy.pro
https://canadianpharmacy.pro/# canadian pharmacy 1 internet online drugstore canadianpharmacy.pro
canadianpharmacymeds Pharmacies in Canada that ship to the US canada drug pharmacy canadianpharmacy.pro
http://canadianpharmacy.pro/# canadian pharmacy com canadianpharmacy.pro
buy prescription drugs from india
http://canadianpharmacy.pro/# canadian pharmacy no rx needed canadianpharmacy.pro
list of legitimate canadian pharmacies
cheapest online pharmacy india indian pharmacy indianpharmacy com indianpharmacy.shop
https://canadianpharmacy.pro/# canadian drug pharmacy canadianpharmacy.pro
https://canadianpharmacy.pro/# legit canadian online pharmacy canadianpharmacy.pro
http://mexicanpharmacy.win/# pharmacies in mexico that ship to usa mexicanpharmacy.win
canadian family pharmacy Canadian pharmacy online canadian pharmacy meds canadianpharmacy.pro
canada ed drugs legitimate canadian pharmacies pharmacy canadian canadianpharmacy.pro
best online pharmacies in mexico online mexican pharmacy mexican mail order pharmacies mexicanpharmacy.win
http://canadianpharmacy.pro/# canada drugs canadianpharmacy.pro
http://indianpharmacy.shop/# reputable indian online pharmacy indianpharmacy.shop
canadian drugstore pharmacy
http://mexicanpharmacy.win/# mexico drug stores pharmacies mexicanpharmacy.win
http://mexicanpharmacy.win/# mexican drugstore online mexicanpharmacy.win
One of the bestmobile car wash service Miami
http://canadianpharmacy.pro/# pharmacy in canada canadianpharmacy.pro
vipps approved canadian online pharmacy Cheapest drug prices Canada canadian pharmacy store canadianpharmacy.pro