From 2f7cdd2ea75345a1123bd5d7a248283d85596a0a Mon Sep 17 00:00:00 2001
From: Aadhavan Srinivasan <aadhavan@twomorecents.org>
Date: Fri, 28 Mar 2025 14:40:10 -0500
Subject: [PATCH] Add loading spinner while map loads; fade in map and fade out
 spinner; load HTMX locally; show text while translations and romanizations
 are being fetched

---
 index.html | 92 +++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 84 insertions(+), 8 deletions(-)
diff --git a/index.html b/index.html
index 00a94a1..aeb7dc0 100644
--- a/index.html
+++ b/index.html
@@ -10,7 +10,7 @@
 		<title>Indian Translate</title>
 		<script src="https://d3js.org/d3.v7.min.js"></script>
 		<script src="https://cdn.jsdelivr.net/npm/@turf/turf@7/turf.min.js" charset="utf-8"></script>
-		<script src="https://unpkg.com/htmx.org@2.0.4" integrity="sha384-HGfztofotfshcF7+8n44JQL2oJmowVChPTg48S+jvZoztPfvwD79OC/LTtG6dMp+" crossorigin="anonymous"></script>
+		<script src="./htmx.min.js"></script>
 		<style>
 			body {
 				background-color: #f4f4f4;
@@ -24,7 +24,16 @@
 			svg {
 				border: 1px solid;
 				padding: 2em;
+				visibility: hidden;
+				opacity: 0;
+				transition: opacity 1s, visibility 2s;
+			}
+
+			svg.show {
+					visibility: visible;
+					opacity: 1;
 			}
+
 		   h1 {
             margin-block: 0.67em;
             font-size: 2em;
@@ -66,11 +75,6 @@
             visibility: visible;
          }
 
-			.testClass:hover {
-				fill: red;
-				cursor: default;
-			}
-
 			.district {
 				stroke: white;
 				stroke-width: 0.25;
@@ -108,21 +112,93 @@
 				fill-opacity: 1;
 				 transition: fill-opacity 0.3s;
 			}
+
+			/* Position map load spinner in the middle of the SVG */
+			.svgContainer {
+					position: relative;
+					display: inline-block;
+			}
+
+			.svgContainer .mapLoadSpinner {
+					position: absolute;
+					top: 40%;
+					left: 40%;
+			}
+
+			/* Credit to https://lukehaas.me/projects/css-loaders/ */
+			.mapLoadSpinner,
+			.mapLoadSpinner:after {
+			  border-radius: 50%;
+			  width: 10em;
+			  height: 10em;
+			  transition: opacity 1s, visibility 2s;
+			}
+			.mapLoadSpinner.hide {
+					opacity: 0;
+					visibility: hidden;
+			}
+			.mapLoadSpinner {
+			  margin: 60px auto;
+			  font-size: 10px;
+			  position: relative;
+			  text-indent: -9999em;
+			  border-top: 1.1em solid rgba(255,158,83, 0.2);
+			  border-right: 1.1em solid rgba(255,158,83, 0.2);
+			  border-bottom: 1.1em solid rgba(255,158,83, 0.2);
+			  border-left: 1.1em solid #ff9e53;
+			  -webkit-transform: translateZ(0);
+			  -ms-transform: translateZ(0);
+			  transform: translateZ(0);
+			  -webkit-animation: load8 1.1s infinite linear;
+			  animation: load8 1.1s infinite linear;
+			}
+			@-webkit-keyframes load8 {
+			  0% {
+			    -webkit-transform: rotate(0deg);
+			    transform: rotate(0deg);
+			  }
+			  100% {
+			    -webkit-transform: rotate(360deg);
+			    transform: rotate(360deg);
+			  }
+			}
+			@keyframes load8 {
+			  0% {
+			    -webkit-transform: rotate(0deg);
+			    transform: rotate(0deg);
+			  }
+			  100% {
+			    -webkit-transform: rotate(360deg);
+			    transform: rotate(360deg);
+			  }
+			}
+
+			#fetchingText {
+				visibility: hidden;
+			}
+
 		</style>
 	</head>
 	<body>
 		<main>
 		<section id="textStuff">
 			<h1>Indian Translate</h1>
-			<form hx-get="/submit" hx-swap=none hx-indicator="#loading-screen" hx-on::before-request="hideText(event.detail.xhr.response)" hx-on::after-request="updateTranslations(event.detail.xhr.response)" class="translateForm" method="get">
+			<form hx-get="/submit" hx-swap=none hx-indicator="#loading-screen" hx-on::before-request="hideTranslationsAndShowText(event.detail.xhr.response)" hx-on::after-request="updateTranslations(event.detail.xhr.response)" class="translateForm" method="get">
 				<label for="query">Enter text to translate:</label>
 				<input type="text" name="query" id="query" required/>
 				<input type="submit" value="Translate"/>
 			</form>
 		<progress id="loading-screen" class="loading-indicator"></progress>
+		<h3 id="fetchingText">Fetching translations...</h3>
+		<noscript>
+			<h2>This website requires javascript to work.</h2>
+		</noscript>
 		</section>
 
-		<svg id = "indiaMap" width="1300" height="1300"></svg>
+		<section class="svgContainer">
+			<svg id = "indiaMap" width="1300" height="1300"></svg>
+			<div id="mapLoadSpinner" class="mapLoadSpinner"></div>
+		</section>
 		</main>
 
 		<script type="text/javascript" src="index.js"></script>
