如何将字体从谷歌字体导入到javascript中,以便我可以将其用于我的画布?



我正在尝试将谷歌字体导入javascript,这样我就可以使用这些字体在我的画布上绘制文本。问题是我收到错误。
错误 1:无法解码下载字体
错误 2:OTS 解析错误

这是针对我正在开发的网页,我查找了问题,但他们提出的解决方案,我不明白。

<!DOCTYPE html>
<html lang = "en">
<body>
<canvas id="canvas" width="400" height="400"></canvas>
<script>
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
var pacifico_font = new FontFace('Pacifico', 'url(https://fonts.googleapis.com/css?family=Pacifico&display=swap)');
pacifico_font.load().then(function(loaded_face) {
document.fonts.add(loaded_face);
document.body.style.fontFamily = '"Pacifico", Pacifico';
}).catch(function(error) {
alert("An error occured, please continue.");
});
document.fonts.ready.then(function(font_face_set) {
var x = true;
return x;
});
ctx.fillStyle=rgb(0,0,0);
if(x===true){
ctx.font="20px Pacifico";
ctx.fillText("Hello Cody(testing)",200,200);
}
</script>
</body>
</html>

我希望画布显示文本,但它提醒我有一个错误,什么都没有。 在控制台中它说:无法解码下载的字体:
https://fonts.googleapis.com/css?family=Pacifico&display=swap
OTS解析错误:无效的版本标记

您正在加载样式表而不是字体。

这是解决方案:

<!DOCTYPE html>
<html lang = "en">
<head>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Pacifico&display=swap">
</head>
<body>
<canvas id="canvas" width="400" height="400"></canvas>
<!--window.onload won't work without this because there is nothing waiting for the link to load-->
<span id="loader" style="font-family: Pacifico;">I am used for loading</span>
<script>
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
ctx.fillStyle="rgb(0,0,0)";
window.onload = function() {
document.getElementById("loader").style.display="none"
ctx.font="20px Pacifico";
ctx.fillText("I am inside of canvas",200,200);
ctx.stroke();
}
</script>
</body>
</html>

您使用的字体链接实际上是指向样式表的链接。

您可以通过访问样式表链接来获取字体的直接链接。

它将显示以下 CSS:

/* cyrillic-ext */
@font-face {
font-family: 'Pacifico';
font-style: normal;
font-weight: 400;
src: local('Pacifico Regular'), local('Pacifico-Regular'), url(https://fonts.gstatic.com/s/pacifico/v16/FwZY7-Qmy14u9lezJ-6K6MmBp0u-zK4.woff2) format('woff2');
unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
font-family: 'Pacifico';
font-style: normal;
font-weight: 400;
src: local('Pacifico Regular'), local('Pacifico-Regular'), url(https://fonts.gstatic.com/s/pacifico/v16/FwZY7-Qmy14u9lezJ-6D6MmBp0u-zK4.woff2) format('woff2');
unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
font-family: 'Pacifico';
font-style: normal;
font-weight: 400;
src: local('Pacifico Regular'), local('Pacifico-Regular'), url(https://fonts.gstatic.com/s/pacifico/v16/FwZY7-Qmy14u9lezJ-6I6MmBp0u-zK4.woff2) format('woff2');
unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
font-family: 'Pacifico';
font-style: normal;
font-weight: 400;
src: local('Pacifico Regular'), local('Pacifico-Regular'), url(https://fonts.gstatic.com/s/pacifico/v16/FwZY7-Qmy14u9lezJ-6J6MmBp0u-zK4.woff2) format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
font-family: 'Pacifico';
font-style: normal;
font-weight: 400;
src: local('Pacifico Regular'), local('Pacifico-Regular'), url(https://fonts.gstatic.com/s/pacifico/v16/FwZY7-Qmy14u9lezJ-6H6MmBp0u-.woff2) format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

只需获取指向您要使用的字体版本的链接,并将其添加到您当前添加样式表的位置。

这段代码适用于我:

let myFont = new FontFace("Pacifico",
"url(/assets/fonts/fonts/Pacifico-Regular.ttf)"
);
myFont.load().then((font) => {   
document.fonts.add(font);
console.log("Font loaded"); 
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
ctx.fillStyle="rgb(0,0,0)";
ctx.font="20px Pacifico";
ctx.fillText("I am inside of canvas",200,200);
ctx.stroke();
});
<script>
var link = document.createElement("link");
link.rel = "stylesheet";
link.href =
"https://fonts.googleapis.com/css2?family=Ubuntu:wght@300&display=swap";
document.getElementsByTagName("head")[0].appendChild(link);
</script>

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