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。

圖層配置

Layer 1 (421 x 38)
Layer 2 (490 x 479)
Layer 3 (1024 x 800)

<!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:

  1. 擷取PSD資訊並將圖檔轉為Base 64格式
  2. 產生與PSD尺寸大小相同的HTML Canvas
  3. 將產生的Base 64圖檔,依照原始位置放入Canvas中
  4. 將Canvas轉成PNG圖檔
圖層配置
Layer 1 (1024 x 800)
Layer 2 (1024 x 800)
Layer 3 (1024 x 800)

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。

圖層設定

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

圖層設定
Before
After

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

Layer 1
Layer 2
Layer 3
Layer 4

解決方法:無法解決

You may also like...

46,671 Responses

  1. Those in “good marriages” reported great happiness,オナホ ラブドールespecially women in heterosexual marriages.

  2. 人形 エロ表示:

    ラブドール おすすめObviously,most people work out of the sheer economic necessity of needing to earn a living.

  3. Relative to all the other secrets on the list,オナドールfewer people in my sample currently have these secrets.

  4. 人形 エロ表示:

    ダッチワイフThe distinction that Caspi makes between violence and abuse largely rests on power; if he considers the first to be “bidirectional” or “mutual,” then sibling abuse is “unidirectional hostility where one sibling seeks to overpower the other via a reign of terror and intimidation,

  5. ラブドール オナホ“It’s not about just beauty from the objective point,it’s about what you gain with beauty.

  6. ダッチワイフ6.You’re not always having sex with someone you’re even remotely attracted to.

  7. 人形 エロ表示:

    The percent of differences that are neurological vs.societal/cultural (i.オナドール

  8. He doesn’t sleep; mostly he promises himself he’ll never end up in this situation again.高級 オナホAnd if he learns his lesson,

  9. ラブドール 男further,significantly predicted their performance on both speed of cognitive processing and ability to use the higher-order so-called “executive functions” of planning and decision-making.

  10. When it came to daily self-expansion behaviors themselves,it was only those reported by “actors” and not partners that contributed to positive relationship outcomes.ラブドール エロ

  11. All too often,when people try to adopt new mindsets,ラブドール おすすめ

  12. mental disorders,eating disorders).オナドール

  13. 人形 エロ表示:

    I was silently seething.ラブドール 男It felt like he had gotten away with something,

  14. 人形 エロ表示:

    ラブドール 男According to the doctrine of we are more likely to achieve insight and wisdom if we avoid extremes of self-gratification and self-mortification.According to the doctrine of Dependent Origination,

  15. But we had both decided that we wanted to honor each other and honor our god,ラブドール えろand so for us the sacrifice was worth it.

  16. 人形 エロ表示:

    it seems that they were used like signet rings,ラブドール おすすめpressed into clay or wax to brand wares and sign contracts and receipts.

  17. lack any empirical support and mislead us in our understanding of the mind.ラブドール おすすめYou’ve likely heard these two myths before.

  18. 人形 エロ表示:

    and approach life’s challenges.高級 オナホMany find themselves replicating family behaviors without fully understanding why,

  19. تقدير لك على هذا الموضوع الجذاب
    للاهتمام كان من المثير للاهتمام حقًا قراءة
    وجهة نظرك حول هذا الموضوع أود
    أن أدعوك إلى الانضمام إلى كازينو
    التشفير لمزيد من الحوارات
    و التعاون المثمرة هناك الكثير من الفرص للتواصل مع أفراد
    آخرين مهتمين بهذا الموضوع وتبادل الأفكار أتطلع إلى سماع آرائك
    وآرائك الأخرى في المستقبل

  20. オナドールI am sure that your parents will come up with a solution.And,

  21. in relationships.Some felt that their experiences were invalidated by other women online.高級 ラブドール

  22. bokep indo表示:

    It’s amazing to visit this site and reading the views of all
    friends about this post, while I am also keen of getting familiarity.

  23. so as a “thank you” for the trip,ラブドール えろI treated him to a couple’s massage at the resort’s legendary Geo Spa.

  24. Hi there very cool website!! Guy .. Beautiful .. Wonderful ..
    I’ll bookmark your website and take the feeds also? I am glad to search out so many useful information right here within the
    publish, we need work out extra strategies on this regard,
    thanks for sharing. . . . . .

  25. extramarital D/s relationship began.人形 エロI told my husband,

  26. ラブドール 男Plato was influenced by Pythagoras d.495 BCE,

  27. Part of the challenge is that each person places a different value on each of these dimensions— some might find a lack of self-disclosure to be a real deal breaker,while others may actually prefer it.ラブドール 男

  28. オナホ ラブドールGetting in touch with our sexual fantasies,sharing those desires with our partner,

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。