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://colab.research.google.com/drive/1ysYfIZpL76JJ9i6tQdkkJr9ArgznFVF-
60a1537d4d reeggod
https://colab.research.google.com/drive/1bCuR9kVdE4f5mT_Z9m0TndPSEC77D5GC
60a1537d4d dekopatr
https://colab.research.google.com/drive/1Mf_AwG33XZQMPlNo4cHFcltb8v5DkkZ4
60a1537d4d jaikay
https://colab.research.google.com/drive/1-yhUapNXmPrtB4lXdWhDzXrxVZ_Cma_d
60a1537d4d verwea
https://colab.research.google.com/drive/1USObyzACKm46kw4pwUAE3sAba4P_H_pb
60a1537d4d emmakian
penis enlargement
https://colab.research.google.com/drive/1Pvyqp7QHkF1ThdoAKw7z3tvwdv7955XV
60a1537d4d helodayg
https://colab.research.google.com/drive/11315V9DIzKwRYZWXi4p2Wur3yU8ZyMxs
60a1537d4d hildsans
I found your blog through google and I must say, this is probably one of the best well prepared articles I have come across in a long time. I have bookmarked your site for more posts.
order fluconazole 100mg online cipro drug sildenafil 150mg brand
https://colab.research.google.com/drive/1jr91DG20jv_fp8oGO1DKeeusx6-dWqx1
60a1537d4d walgay
https://colab.research.google.com/drive/1ZWNe3cuGshk2QFIf2LAcz5UY2yKxdHax
60a1537d4d denpead
аренда манипулятора 7 тонн 60a1537d4d shongen
кран манипулятор в аренду москва 60a1537d4d innhals
payday loan
https://stromectolgl.com buy ivermectin 6mg
payday loan
fluconazole 200mg usa buy cipro 1000mg pill viagra 100 mg
buy fluconazole 200mg generic sildenafil brand buy sildenafil 50mg pill
https://stromectolgl.com where can i buy ivermectin
I found your blog through google and I must say, this is probably one of the best well prepared articles I have come across in a long time. I have bookmarked your site for more posts.
What Is Hemp Paper? Іs the Difference Betweden CBD Oil,
CBD Tinctures, Αnd CBD Softgels?
penis enlargement
buy zofran generic order valacyclovir 1000mg online buy finasteride pill
best usa casinos
casino games win real money
sign up bonus casino
I believe this web site has some really wonderful info for everyone : D.
http://filmgoda.ru/film9/Posle-Dolgo-i-schastlivosmotret-onlain-FN59.html
http://filmgoda.ru/film9/Makhinatoryfilm-onlain-IL87.html
penis enlargement
generic zestoretic