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
I’ll right away take hold of your rss feed as I can not in finding your e-mail subscription hyperlink or newsletter service.
Do you have any? Kindly allow me recognise so that I could subscribe.
Thanks.
my webpage … เครื่องทำปุ๋ย
Heya fantastic blog! Does running a blog such as this take a large amount
of work? I have very little knowledge of programming but I was hoping to start my
own blog soon. Anyhow, should you have any recommendations or techniques for new
blog owners please share. I understand this is off subject
nevertheless I just had to ask. Thanks!
payday loan
Ηow To Identify A Pure Hemp Gummies Vs CBD Gummies: What You Need To Know
Oil Ϝrom Those Fake Products?
sildalis pills sildenafil 25mg for sale cozaar 25mg sale
Thank you so much for sharing this wonderful post with us.
Thank you for sharing indeed great looking !
viagra for sale online canada
win money online
online bingo for money
casino reviews
I know this web page presents quality
based posts and other stuff, iis there any other web page which gives such daya in quality?
web page
viagra sildenafil 150mg oral lamotrigine 50mg order losartan 25mg sale
Will CBD Help Sciatica Pain? Whatt Υou Neeed How To Choose CBD For Your Dog Like A Pro Ⲕnow
female viagra sildenafil order lamictal for sale cozaar 50mg over the counter
I’d like to be able to write like this, but taking the time and developing articles is hard…. Takes a lot of effort.
AEEDC Dubai 2022 sees record-breaking trade
deals worth $3.9 billion. News & Press Releases.
Event attra000 participants from 155 countries and showcases 4,800 state-of-the-art products High volume of deals reflects
the event’s success in providing a platform for the global dental industry to build partnerships and.
buy a dissertation online help
dissertation writing tips
dissertation completion pathway
accutane order online order sildenafil pills aurogra 50mg tablet
online casino best welcome bonus
top online casino
casino deposit bonus
This contained some excellent tips and tools. Great blog publication.
CBD Oil is The Concentrate Ϝorm tһаt Givews Fastfer Ꭱesults
My web page E-Commerce Giant Amazon Supports Reform In Us Cannabis Law
glucophage australia
doctoral dissertation help
proposal and dissertation help 3000 words
dissertation help methodology
Induce CBD іn your Daily Life Which Exercises Are Better For Stress? (And How To Make Yourself Actually Do Them!) Кeep Mind
and Body Calm
cost isotretinoin 10mg suhagra pills aurogra for sale online
accutane pills purchase suhagra generic sildenafil drug
casino bonus
free online casino bonus
best online casino real money
Is it okay to put a portion of this on my weblog if perhaps I post a reference point to this web page?
CBD Products: Tһey Cɑn Makke Yߋu Feel Relaxed Ьut Not High CBD Edibles: Which Edibles Contain The Most CBD?
Beginners Guide Tօ The Ultimate Throwdown: CBD Oil Paste Vs. Tablets (And Many More)
order sildenafil 100mg online cheap free shipping viagra prednisone 10mg cheap