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build-wasm.sh
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build-wasm.sh
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#!/usr/bin/env bash
set -xe
if ! command -v wasm-opt &> /dev/null; then
echo "wasm-opt could not be found"
exit
fi
if ! command -v wasm-bindgen &> /dev/null; then
echo "wasm-bindgen could not be found"
exit
fi
if ! command -v wasm2wat &> /dev/null; then
echo "wasm2wat could not be found"
exit
fi
rustup target install wasm32-unknown-unknown
export WASM_PATH="target/wasm32-unknown-unknown/release"
cargo clean --target wasm32-unknown-unknown --release
cargo build --lib --target wasm32-unknown-unknown --release
wasm-bindgen "${WASM_PATH}/codectrl.wasm" --out-dir "${WASM_PATH}/js/" --browser --no-modules --no-typescript
mv "${WASM_PATH}/codectrl.wasm" "${WASM_PATH}/codectrl_bg.wasm"
wasm-opt -O2 --fast-math -o "${WASM_PATH}/js/codectrl_bg.wasm" "${WASM_PATH}/js/codectrl_bg.wasm"
wasm-strip "${WASM_PATH}/js/codectrl_bg.wasm"
cat <<EOF > ${WASM_PATH}/index.html
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Disable zooming: -->
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<head>
<title>CodeCTRL</title>
<style>
html {
/* Remove touch delay: */
touch-action: manipulation;
}
body {
/* Light mode background color for what is not covered by the egui canvas,
or where the egui canvas is translucent. */
background: #909090;
}
@media (prefers-color-scheme: dark) {
body {
/* Dark mode background color for what is not covered by the egui canvas,
or where the egui canvas is translucent. */
background: #404040;
}
}
/* Allow canvas to fill entire web page: */
html,
body {
overflow: hidden;
margin: 0 !important;
padding: 0 !important;
height: 100%;
width: 100%;
}
/* Position canvas in center-top: */
canvas {
margin-right: auto;
margin-left: auto;
display: block;
position: absolute;
top: 0%;
left: 50%;
transform: translate(-50%, 0%);
}
.centered {
margin-right: auto;
margin-left: auto;
display: block;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: #f0f0f0;
font-size: 24px;
font-family: Ubuntu-Light, Helvetica, sans-serif;
text-align: center;
}
/* ---------------------------------------------- */
/* Loading animation from https://loading.io/css/ */
.lds-dual-ring {
display: inline-block;
width: 24px;
height: 24px;
}
.lds-dual-ring:after {
content: " ";
display: block;
width: 24px;
height: 24px;
margin: 0px;
border-radius: 50%;
border: 3px solid #fff;
border-color: #fff transparent #fff transparent;
animation: lds-dual-ring 1.2s linear infinite;
}
@keyframes lds-dual-ring {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
</style>
</head>
<body>
<!-- The WASM code will resize the canvas dynamically -->
<canvas id="codectrl-root"></canvas>
<div class="centered" id="center_text">
<p style="font-size:16px">
Loading…
</p>
<div class="lds-dual-ring"></div>
</div>
<script src="./js/codectrl.js"></script>
<script>
// We'll defer our execution until the wasm is ready to go.
// Here we tell bindgen the path to the wasm file so it can start
// initialization and return to us a promise when it's done.
console.debug("loading wasm…");
wasm_bindgen("./codectrl_bg.wasm")
.then(on_wasm_loaded)
.catch(on_wasm_error);
function on_wasm_loaded() {
console.debug("wasm loaded. starting app…");
// This call installs a bunch of callbacks and then returns:
const handle = wasm_bindgen.start("codectrl-root");
// setTimeout(() => {handle.stop_web(); handle.free())}, 2000)
console.debug("app started.");
document.getElementById("center_text").remove();
}
function on_wasm_error(error) {
console.error("Failed to start: " + error);
}
</>
</body>
</html>
<!-- Powered by egui: https://github.com/emilk/egui/ -->
EOF