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logo.js
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logo.js
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// logo
export function logo(selection, width, height, options = {}) {
let url = options.url
? options.url
: "https://github.com/neocarto/bertin/raw/main/img/logo.png";
let position = options.position ? options.position : "left";
const img = new Image();
img.src = url;
img.onload = () => {
let x;
let y;
let w = options.size != undefined ? options.size : 100;
let h = (img.height * w) / img.width;
switch (position) {
case "left":
x = 10;
y = height - 10 - h;
break;
case "middle":
x = width / 2 - w / 2;
y = height - 10 - h;
break;
case "right":
x = width - 10 - w;
y = height - 10 - h;
break;
default:
x = position[0];
y = position[1];
}
selection
.append("g")
.attr("class", options.id)
.attr("data-layer", JSON.stringify({ _type: "logo" }))
.append("image")
.attr("xlink:href", url)
.attr("width", w)
.attr("height", h)
.attr("x", x)
.attr("y", y);
};
}