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Add loading animation while waiting for wasm to load

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Closes https://github.com/emilk/egui/issues/1009
This commit is contained in:
Emil Ernerfeldt 2021-12-28 14:13:51 +01:00
parent cda4c8ba13
commit c412fd4a9c
1 changed files with 54 additions and 3 deletions
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57
docs/index.html
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@ -45,12 +45,59 @@
left: 50%; left: 50%;
transform: translate(-50%, 0%); transform: translate(-50%, 0%);
} }
.loading {
margin-right: auto;
margin-left: auto;
display: block;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: white;
font-size: 24px;
font-family: Ubuntu-Light, Helvetica, sans-serif;
}
/* ---------------------------------------------- */
/* 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> </style>
</head> </head>
<body> <body>
<!-- The WASM code will resize this dynamically --> <!-- The WASM code will resize the canvas dynamically -->
<canvas id="the_canvas_id"></canvas> <canvas id="the_canvas_id"></canvas>
<div class="loading" id="loading">
Loading…&nbsp;&nbsp;
<div class="lds-dual-ring"></div>
</div>
<script> <script>
// The `--no-modules`-generated JS from `wasm-bindgen` attempts to use // The `--no-modules`-generated JS from `wasm-bindgen` attempts to use
@ -77,9 +124,13 @@
.catch(console.error); .catch(console.error);
function on_wasm_loaded() { function on_wasm_loaded() {
// This call installs a bunch of callbacks and then returns. console.log("loaded wasm, starting egui app…");
console.log("loaded wasm, starting egui app");
// This call installs a bunch of callbacks and then returns:
wasm_bindgen.start("the_canvas_id"); wasm_bindgen.start("the_canvas_id");
console.log("egui app started.");
document.getElementById("loading").remove();
} }
</script> </script>
</body> </body>