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...

46,746 Responses

  1. and the abuser was joining in both to keep him or herself safe from becoming the target and to establish loyalty to the abusive parent.ダッチワイフThis is especially true in a family where a mother or father is high in narcissistic traits,

  2. 人形 エロ表示:

    人形 セックスWe sincerely apologize for this poor experience.With ten years of experience in love doll manufacturing,

  3. 人形 エロ表示:

    And 97 percent of my participants say they currently have at least one of the secrets from the list.(These numbers primarily reflect my American participants,オナドール

  4. characteristics, and cost details, We’ve narrowed down the best dolls that オナホ 高級WM Doll has to carry.

  5. many light switches (Jacuzzi,steam shower,人形 エロ

  6. but never of any actual,core self.ラブドール 男

  7. 人形 エロ表示:

    it will be up to you how you will deal with this.Take time and put thought into this.高級 オナホ

  8. ラブドール えろAt this point,it’s around 1 a.

  9. ダッチワイフgoing at it daily,later laughing in each other’s arms about how much catching up we had to do.

  10. ラブドール エロHypersexuality can corrode one’s self-esteem and result in a vicious cycle of endless sexual activity.This post is in response to Dr.

  11. This meant always saying “yes,高級 オナホ” avoiding conflict at all costs,

  12. オナドールviolating someone’s trust,or doing something illegal.

  13. After getting been whitelisted inside our method, you won’t maybe get blocked once again by our firewall! Ban lifts also consider effect quickly.オナホ 高級We sincerely apologize for this negative expertise.

  14. オナホ 高級(Whether Ms.Guggenheim’s sexual escapades were fueled at all by alcohol or other disinhibiting drugs is yet another relevant question.

  15. the boys did not ejaculate but reported experiencing (dry) orgasms.Scott described himself as lower middle class,高級 ラブドール

  16. 人形 エロ表示:

    Don’t be afraid to talk to yourself about your thought patterns,as hokey as this can sound.ラブドール おすすめ

  17. how amazing I was,he held back emotionally.ダッチワイフ

  18. 人形 エロ表示:

    ラブドール おすすめit still won’t be enough attention for them.For this reason,

  19. But how much is too much? What is the threshold,ラブドール 男beyond which a couple will definitely part ways? Obviously having more of these 24 factors makes a breakup more likely,

  20. The daimonic,ラブドール エロwrote May in his magnum opus,

  21. ラブドール オナホ” wrote one woman.Aspirations towards power.

  22. and that the tyrant,being the most wicked of people,ラブドール 男

  23. 人形 エロ表示:

    resist closeness with their partners,ラブドール 男even though they may be in a committed relationship.

  24. In the case you cited of the famous heiress and art patron Peggy Guggenheim,ラブドール エロI don’t know how much of her sexual behavior was indiscriminating in its frequency.

  25. ラブドール オナホ347 heterosexual singles to find out how their race and ethnicity related to the frequency of their orgasms.They were asked the question,

  26. She said KK isn’t necessarily looking for “supermodel qualities,ラブドール えろ” but instead people with “more the right lust for life and attractive looking people who obviously take care of themselves.

  27. almost…HaHa!) Fantastic job.セックス ドールI really loved what you had to say,

  28. ラブドール おすすめAnother common problem in our interactions with difficult people is that we get distracted by our upset and lose sight of the goals we are trying to accomplish.When you are forced to interact with someone who is being difficult,

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。