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<!doctype html>
<html lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--This is code modified from https://github.com/emscripten-core/emscripten/blob/main/src/shell_minimal.html.-->
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Hitomezashi</title>
<style>
canvas {
padding-right: 0;
margin-left: auto;
margin-right: auto;
display: block;
border: 0px none;
background-color: black;
}
form {
display: table;
margin: auto;
}
form > p {
display: table-row;
}
form > p > label {
display: table-cell;
}
form > p > label > input {
display: table-cell;
}
button#downloadCanvas {
display: block;
margin: 0 auto;
}
p#info {
text-align: center;
}
p#info > a {
margin-left: 1ex;
margin-right: 1ex;
}
</style>
</head>
<body>
<p id="info">See <a href="https://github.com/untir-l/hitomezashi/blob/main/README.md">the README</a> for information.</p>
<form name="hitomezashi parameters" autocomplete="off" method="get">
<p><label>x pattern: <input name="x_pattern"></label></p>
<p><label>y pattern: <input name="y_pattern"></label></p>
<p><label>gap: <input name="gap" type="number"></label></p>
<p><label>line thickness: <input name="line_thickness" type="number"></label></p>
<p><label>foreground colour: <input name="fg_colour" type="color"></label></p>
<p><label>background colour: <input name="bg_colour" type="color"></label></p>
<p><input type="submit" value="submit"></p>
</form>
<br>
<canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()" tabindex=-1></canvas>
<br>
<button id="downloadCanvas">download as image</button>
<script type='text/javascript'>
// Make sure the WebGL context preserves the drawing buffer so the download button works
// Based on https://stackoverflow.com/a/43979935
const canvas = document.querySelector("#canvas");
canvas.getContext("webgl", {preserveDrawingBuffer: true});
var Module = {
canvas: (function() {
canvas.addEventListener("webglcontextlost", function(e) { alert('WebGL context lost. You will need to reload the page.'); e.preventDefault(); }, false);
return canvas;
})(),
};
// Set the input fields based on the query string so they appear sticky
const params = new URLSearchParams(window.location.search);
document.querySelector("input[name=\"x_pattern\"]").value = params.get("x_pattern");
document.querySelector("input[name=\"y_pattern\"]").value = params.get("y_pattern");
document.querySelector("input[name=\"gap\"]").value = params.get("gap");
document.querySelector("input[name=\"line_thickness\"]").value = params.get("line_thickness");
document.querySelector("input[name=\"fg_colour\"]").value = params.get("fg_colour");
document.querySelector("input[name=\"bg_colour\"]").value = params.get("bg_colour");
function downloadCanvas() {
let downloadLink = document.createElement("a");
downloadLink.setAttribute("download", "hitomezashi");
downloadLink.setAttribute("href", canvas.toDataURL());
downloadLink.click();
}
document.querySelector("#downloadCanvas").addEventListener("click", downloadCanvas);
</script>
{{{ SCRIPT }}}
</body>
</html>
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