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...

114,200 Responses

  1. ”Research exploring the dynamics of these relationships is severely limited,高級 ラブドールexcept for a recent interview study of 55 women from the Greater Montreal metropolitan area conducted by gender and sexuality professor Milaine Alarie.

  2. developing women-only forums,ラブドール エロor spaces dedicated to women on existing sites,

  3. オナドールwas often seen as its own category: maybe you stole something as a child once,or you “borrowed” something knowing that you would never return it (I’ll admit here to both,

  4. We have a few recent examples of the societal danger and personal folly of “faking it“ outside of psychological treatment—Elizabeth Holmes of Theranos fame,ラブドール おすすめfor instance,

  5. watched a thousand times.The result: at age 40,人形 エロ

  6. オナホ 高級We sincerely apologize for this bad practical experiencWe now have some exciting news that we will not wait to share with you! For a valued member of our Neighborhoodwe are thrilled to introduce you to definitely the latest innovation in intercourse doll technology ?the new STPE substance,recently launched by WM Dolls.

  7. ダッチワイフand they’re uncomfortable.Due to the rigorous athletic nature of the work,

  8. WM Doll is probably the greatest-offering dolls during the nation and is オナホ 高級without doubt one of the leading TPE doll suppliers in China. With dozens of obtainable styles, characteristics, and rate points,

  9. Going back to the exercise example,you could be so ready to get after it at the gym,リアル ドール

  10. 人形 エロbut I can tell my partner is only doing it for me,which takes the fun out of it.

  11. ラブドール オナホSome encouraged women to support other women.They hold the money and power to control the people (i.

  12. ラブドール おすすめIt is incontrovertible that a high baseline of physical activity in addition to regular vigorous exercise—like brisk walking,running,

  13. ラブドール えろsince they look like something you would buy from a truck stop sex shop: the ones with the plexiglass windows full of dildos and back rooms for peepshows.The sleeve I saw at the oral sex class was nothing like that.

  14. her behavior is subtly aggressive.ラブドール エロSuch covert acts of hostility,

  15. オナホ 高級For me,this represents a positive prognostic quality.

  16. feel a ton of pressure to perform rather than enjoy: They need to last forever and have a huge penis to display their manhood.ラブドール えろ“I was perplexed and amazed.

  17. minds,ラブドール えろand bodies to one another(though to be honest I was ready to “open” myself right there in the shower what with all of the high-budget-porno vibes happening).

  18. Hence,my common refrain in discussing treatment options with my patients is,ラブドール おすすめ

  19. but for a different reason.オナドールThese secrets (along with other surprises) can only be kept for so long,

  20. Preference for frequent sexual contacts is not necessarily the same as being sexually indiscriminating.ラブドール エロThe latter,

  21. Everywhere you look,ラブドール エロit seems there are people in “forever” relationships.

  22. The repetition helps build the tension.ラブドール えろBefore the ejaculation comes a feeling of buildup,

  23. ラブドール おすすめwith some inscriptions dating from the early Harappan phase,before 2700 BCE.

  24. and inspected by certainly one of our workers customers for tears and damage. These in inventory dolls オナホ 高級have already been cleared as being in terrific problem

  25. オナホ ラブドールsatisfying relationships with family members was not related to being single,They concluded: “Combined,

  26. 高級 オナホthis year,my resolution is to think before I open my mouth.

  27. オナホ ラブドール“above and beyond any effect of sexual satisfaction.”As to the impact of their research,

  28. ダッチワイフWe’d talk for hours about politics and sports,and though he commented on how amazing our chemistry was,

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。