從adobeillustrator匯出的svg檔案不會在HTMLCanvas上呈現-有解無憂

我目前正在使用 HTML5 Canvas API 處理一個專案，并希望包含 SVG 格式的影像，但是，我發現從 Adob??e Illustrator 匯出的 SVG 檔案不會在畫布上呈現。我沒有收到任何錯誤，只是沒有出現影像。

這是用于演示目的的代碼：


// function to set up a canvas
function makeCanvas(
  width = 256,
  height = 256,
  border = "1px solid black",
  backgroundColor = "white"
) {
  // make the canvas element and add it to the DOM
  let canvas = document.createElement("canvas");
  canvas.width = width;
  canvas.height = height;
  canvas.style.border = border;
  canvas.style.backgroundColor = backgroundColor;
  document.body.appendChild(canvas);
  canvas.ctx = canvas.getContext("2d");

  // return the canvas
  return canvas;
}

// make the canvas
let canvas = makeCanvas(512, 512);
let ctx = canvas.getContext("2d");

// create an image object
let test = new Image();

// add an event listener for image load
test.addEventListener("load", loadHandler, false);

// set the source of the image file
test.src = "../images/speedboat.svg";

// function to draw the image on canvas once it has finished loading
function loadHandler() {
  ctx.drawImage(test, -0, -0);
}

這是 Adob??e 匯出的檔案：

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 320.43 62.94"><defs><linearGradient id="linear-gradient" x1="39.97" y1="-42.69" x2="279.23" y2="95.44" gradientUnits="userSpaceOnUse"><stop offset="0"/><stop offset="0.39" stop-color="#601d02"/><stop offset="1" stop-color="#ff4e05"/></linearGradient><linearGradient id="linear-gradient-2" x1="0.34" y1="13.97" x2="318.31" y2="13.97" gradientUnits="userSpaceOnUse"><stop offset="0"/><stop offset="0.21" stop-color="#030100"/><stop offset="0.35" stop-color="#0b0300"/><stop offset="0.46" stop-color="#1a0801"/><stop offset="0.56" stop-color="#2f0e01"/><stop offset="0.66" stop-color="#4a1701"/><stop offset="0.74" stop-color="#6c2102"/><stop offset="0.83" stop-color="#932d03"/><stop offset="0.91" stop-color="#c13b04"/><stop offset="0.98" stop-color="#f44b05"/><stop offset="1" stop-color="#ff4e05"/></linearGradient><linearGradient id="linear-gradient-3" x1="146.1" y1="38.07" x2="146.1" y2="38.07" gradientUnits="userSpaceOnUse"><stop offset="0"/><stop offset="0.49" stop-color="#606060"/><stop offset="1" stop-color="#c6c6c6"/></linearGradient><linearGradient id="linear-gradient-4" x1="146.03" y1="34.28" x2="146.17" y2="41.86" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#ffc221"/><stop offset="0.18" stop-color="#fec224"/><stop offset="0.34" stop-color="#fac22f"/><stop offset="0.48" stop-color="#f4c341"/><stop offset="0.62" stop-color="#ebc35a"/><stop offset="0.76" stop-color="#e0c47a"/><stop offset="0.89" stop-color="#d3c5a1"/><stop offset="1" stop-color="#c6c6c6"/></linearGradient><linearGradient id="linear-gradient-5" x1="136.45" y1="43.24" x2="136.56" y2="49.07" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#fdc24a"/><stop offset="0.2" stop-color="#fbc24d"/><stop offset="0.38" stop-color="#f7c258"/><stop offset="0.55" stop-color="#efc36a"/><stop offset="0.71" stop-color="#e4c483"/><stop offset="0.86" stop-color="#d6c5a3"/><stop offset="1" stop-color="#c6c6c6"/></linearGradient></defs><title>speedboat</title><g id="Layer_2" data-name="Layer 2"><g id="Layer_1-2" data-name="Layer 1"><path d="M1.09,26.44l317.09,1.7C259,55.4,218,61.45,190.71,61.44c-6.33,0-56.71-.36-86,0-15,.18-22.57.33-28.14.44q-12,.24-23.86.56c-13.5-.5-21.24.37-25.5-2.5-4.63-3.13-6.13-6.88-13.31-17C8.69,35.6,4.08,30,1.09,26.44Z" style="fill:#fcee21;stroke:#000;stroke-miterlimit:10"/><path d="M318.21,27.94c-40.67-5.67-78.33-21.84-119-27.5-7.92-.35-19.5,2-35,6-9,2.32-18,3.09-34.39,6.2-20.11,3.8-20.38,4.5-33.79,5.95-13.82,1.49-28.31.34-45.82.85-7.26.2-13.31-.22-18.5,0-7.43.3-11.58.13-15.66.16-2.69,0-5.37-3.47-7.83-2.37-2.65,1.18-7,6.08-7,7.71Z" style="fill:url(#linear-gradient)"/><path d="M318.11,27.93c-2.54-.36-5-.66-7.47-1.05l-7.52-1.37-7.48-1.57-7.45-1.71c-9.91-2.38-19.73-5.09-29.55-7.8C239,9,219.33,3.59,199.15.83h0a64.46,64.46,0,0,0-12.6,1.06c-4.17.7-8.32,1.59-12.45,2.56s-8.22,2.07-12.38,3.08-8.37,1.64-12.56,2.33c-8.4,1.32-16.75,2.76-25.08,4.44S107.49,18,99,18.87A187.73,187.73,0,0,1,73.47,20c-8.52-.06-17-.12-25.49.15-4.26.08-8.53-.08-12.75-.08-2.11,0-4.21.11-6.35.17s-4.27.1-6.4.1H16.11a7,7,0,0,1-3.37-1.08A15.79,15.79,0,0,0,10,17.94a2.3,2.3,0,0,0-1.17-.1,4.35,4.35,0,0,0-1.17.58,16.24,16.24,0,0,0-2.33,1.93,22.08,22.08,0,0,0-2.05,2.29,13.54,13.54,0,0,0-.85,1.23A3.38,3.38,0,0,0,2,24.94l-.79-.81,78.94.61,78.87,1,79.29,1.22Zm.2,0-78.71-.49-79.22-.28-79.62-.54L1.2,25.74H.34l.07-.8a4.09,4.09,0,0,1,.68-1.88,15.52,15.52,0,0,1,1-1.39,24.44,24.44,0,0,1,2.21-2.44A17.24,17.24,0,0,1,6.84,17.1a5.53,5.53,0,0,1,1.69-.79,3.8,3.8,0,0,1,2,.13,16.67,16.67,0,0,1,3,1.49,5.57,5.57,0,0,0,2.61.89l6.38,0c2.12,0,4.24,0,6.35-.07s4.26-.18,6.4-.15c4.27,0,8.5.18,12.74.13,8.48-.24,17-.15,25.5-.06a188.43,188.43,0,0,0,25.38-1.06c8.43-.86,16.68-2.88,25.05-4.45S140.64,10.13,149,8.84c4.19-.67,8.38-1.34,12.5-2.27s8.24-2.08,12.39-3S182.25,1.73,186.45,1a66.53,66.53,0,0,1,12.78-1h0c20.23,2.86,39.92,8.39,59.52,13.9,9.8,2.76,19.61,5.52,29.5,8l7.43,1.75,7.47,1.6,7.5,1.4C313.24,27,315.82,27.52,318.31,27.94Z" style="fill:url(#linear-gradient-2)"/><path d="M277.18,38.07H15" style="fill:url(#linear-gradient-3)"/><path d="M277.18,37.92c0-.07,0,.57,0,.3H275l-2.18,0-4.35,0-4.35,0-2.18,0h-2.17c0,.54,0-.73,0-.6v.6l-61.18.53-61.19.44c-20.39.18-40.79.41-61.18.18S35.41,39,15,38.22v-.3c20.39-.79,40.79-1.05,61.19-1.3s40.79,0,61.18.18l61.19.43,61.18.54v.6c0,.13,0-1.14,0-.6h2.17l2.18,0,4.35,0,4.35,0,2.18,0h2.17c0-.27,0,.37,0,.3Z" style="fill:url(#linear-gradient-4)"/><path d="M246.51,46.26l-110,.7c-18.34.1-36.67.33-55,.2s-36.67-.33-55-.9v-.2c18.33-.58,36.67-.72,55-.9s36.67.09,55,.2l110,.7Z" style="fill:url(#linear-gradient-5)"/></g></g></svg>

它可以用瀏覽器 BTW 打開，但不能在畫布上打開。我想知道是否有人知道這是為什么以及如何解決它。目前我發現，如果我將檔案匯入 vectr.com，然后直接匯出它們而不制作任何模組，它們渲染得很好。

執行上述操作后，這是來自 Adob??e 的相同影像檔案：

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="500" height="500" viewBox="0 0 500 500" xml:space="preserve">
<desc>Created with Fabric.js 4.6.0</desc>
<defs>
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<path style="stroke: none; stroke-width: 1; stroke-dasharray: none; stroke-linecap: butt; stroke-dashoffset: 0; stroke-linejoin: miter; stroke-miterlimit: 4; fill: url(#SVGID_10); fill-rule: nonzero; opacity: 1;" vector-effect="non-scaling-stroke"  transform=" translate(-136.51, -46.15)" d="M 246.51 46.26 L 136.51 46.96 C 118.16999999999999 47.06 99.83999999999999 47.29 81.50999999999999 47.160000000000004 C 63.17999999999999 47.03000000000001 44.83999999999999 46.830000000000005 26.50999999999999 46.260000000000005 L 26.50999999999999 46.06 C 44.83999999999999 45.480000000000004 63.17999999999999 45.34 81.50999999999999 45.160000000000004 C 99.83999999999999 44.980000000000004 118.17999999999999 45.25000000000001 136.51 45.36000000000001 L 246.51 46.06000000000001 Z" stroke-linecap="round" />
</g>
</svg>

現在，從 vectr 匯入/匯出的這個額外步驟作業正常，直到我嘗試在影像上包含蒙版紋理，而這些紋理根本無法匯入到 vectr 中，所以，我又回來試圖找出為什么來自 Adob??e 的 svg 檔案Ilustrator 不在畫布上渲染，如果我能做些什么來讓這些作業？

如果有人對此有任何經驗，我將非常感謝我能得到的任何幫助。

uj5u.com熱心網友回復：

好的！這里發生了一些事情，在與 stackexchange 上的從 adobe illustrator 匯出的 svg 檔案不會在 HTML Canvas 上呈現

向 @Billy Kerr 和 @Wolff 大喊大叫，感謝他們在這些問題上提供的幫助。

希望這可以幫助這里的其他人。

魚咬

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標籤：javascript svg html5-canvas adobe-illustrator

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