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...

38,833 Responses

  1. and chronic exposure to trauma over a long duration.We can fit this scene within this framework quite easily.ラブドール 通販

  2. reduced levels of cortisol and pro-inflammatory cytokines IL-6 and IL-8,高級 ラブドールand increased anti-inflammatory IL-10 after the retreat.

  3. オナホドールPeople may use sex dolls for a variety of reasons,ranging from sexual gratification to companionship,

  4. By scanning the chaotic personal aftermath of trauma with an eye for strengths,ラブドール 通販survivors can reclaim the energies unleashed but rarely recognized as such in the struggle with fear,

  5. When you came into my life,sex ドールmy faith got restored in the saying ‘love always finds a way’.

  6. オナホドールit seems as though society will continue to embrace sexual wellness and expression in the form of sex doll

  7. 人形 エロ表示:

    ラブドール 女性 用Still,the input from someone we trust can help piece together things we don’t remember or have doubts about.

  8. my older child responded by running in circles with his hands over his ears chanting,セックス 人形“That’s funny!” over and over again.

  9. ラブドール 女性 用In short,wounded healers have many offerings.

  10. エロ 人形表示:

    rather than react and pounce all over the present issue,it’s better to give it a little time and spac Take a breath and let your partner do the samWe have a tendency to personalize so much of what goes on with someone close to us.ラブドール 女性 用

  11. Symptoms include poor mental health,exhaustion,リアル ラブドール

  12. ダッチワイフBut almost all of those annoyances should be welcomed as symptoms that keep the body healthy and functioning as best it can.In a relatively healthy body,

  13. エロ 人形表示:

    different behaviors might be branded “psychopathic” in 1950 versus 1990.What remains the same is that there is pervasive rule-breaking and,ダッチワイフ と は

  14. エロ 人形表示:

    you walk the dog and maybe are more likely to have the health to do it.ラブドール 高級There are many publically accessible green areas here.

  15. リアル セックスBut out of those who have used their sex doll before,just how many do it regularly? According to the answers,

  16. 人形 エロ表示:

    ラブドール 販売Family-living prairie dogs,who many people write off as “merely rodents,

  17. 人形 エロ表示:

    If something feels true to us,it’s okay to accept that our experience or personal truth affected our lives.ラブドール 女性 用

  18. ダッチワイフ と はShe takes it freely.It’s not a true crime memoiror not only It’s literature.

  19. えろ 人形表示:

    女性 用 ラブドールand even crazy.Sociologists argue that we need to understand gaslighting in the context of unequal power relationships,

  20. リアル セックスCalifornia”Being highly sexual and single was challenging for me,I really needed a safe way to explore my naughty side without the awful complexities of a relationship.

  21. as disengagement is prolonged,ラブドール エロmore isolation ensues.

  22. えろ 人形表示:

    セックス ドールThe effects of the light blue vs.dark blue categorization on our perception are relatively minor.

  23. From her launch into fame in the early 1950s to her troubled,early demise a decade later,人形 エロ

  24. That seemed to help a bit.However,人形 エロ

  25. えろ 人形表示:

    オナホドールWithin ten years,sex dolls began to look incredibly real.

  26. Younger children may engage in temper tantrums or perpetuate violent actse., hitting, kicking, spitting towards their peers, siblings, teachers, or parents.ラブドール セックス

  27. 人形 エロ表示:

    I guess! My sex doll,リアル セックスBruce (I named him,

  28. 人形 エロ表示:

    we pride ourselves on delivering an unmatched experience that caters to your wildest fantasies.From seductive sirens with enchanting curves to sultry vixens that exude irresistible charm,ラブドール アニメ

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。