Add example

maptiler · Dec 17, 2024 · aedd092 · aedd092
1 parent 10f87f0
commit aedd092
Showing 1 changed file with 158 additions and 0 deletions.
diff --git a/demos/handling-webgl-errors.html b/demos/handling-webgl-errors.html
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+<html>
+
+<head>
+  <title>MapTiler JS SDK example</title>
+  <style>
+    html {
+      height: 100%;
+      font-family: sans-serif;
+      font-size: 13px;
+    }
+
+    body {
+      height: 100%;
+      margin: 0;
+      display: grid;
+      grid-template: 1fr 1fr / 1fr 1fr;
+      gap: 16px;
+      box-sizing: border-box;
+      padding: 16px;
+    }
+
+    .map {
+      display: flex;
+      justify-content: center;
+      align-items: center;
+      box-shadow: 0 0 3px 0 rgba(0, 0, 0, 0.5);
+    }
+
+    #style-picker-container {
+      position: absolute;
+      z-index: 2;
+      margin: 10px;
+    }
+  </style>
+
+  <link rel="stylesheet" href="../build/maptiler-sdk.css">
+</head>
+
+<body>
+  <script src="../build/maptiler-sdk.umd.min.js"></script>
+
+  <script>
+    function getRandomMapStyle() {
+      const styles = Object.keys(maptilersdk.MapStyle);
+      const style = maptilersdk.MapStyle[styles[Math.floor(Math.random() * styles.length)]];
+      const variants = Object.keys(style.variants);
+      const variant = style[variants[Math.floor(Math.random() * variants.length)]];
+      return variant;
+    }
+
+    function createMap() {
+      const element = document.createElement("div");
+      element.className = "map";
+      document.body.appendChild(element);
+
+      const map = new maptilersdk.Map({
+        container: element,
+        style: getRandomMapStyle(),
+        hash: false,
+        geolocate: true,
+        terrain: true,
+        scaleControl: true,
+        fullscreenControl: true,
+        terrainControl: true,
+      });
+
+      return map;
+    }
+  </script>
+
+  <script>
+    maptilersdk.config.apiKey = "YOUR_API_KEY";
+
+    /*
+     * The mapLeftTop will lose the WebGL context because it is removed
+     * so the event will not be called.
+     */
+    const mapLeftTop = createMap();
+
+    mapLeftTop.on("webglcontextlost", () => {
+      console.log("webglcontextlost", mapLeftTop); // Should not be called
+    });
+
+    mapLeftTop.on("load", () => {
+      setTimeout(() => {
+        mapLeftTop.remove();
+        mapLeftTop.getContainer().innerHTML = "Map removed successfully 🎉";
+      }, 1000);
+    });
+    /* *** */
+
+    /*
+     * The mapRightTop will lose the WebGL context and default warning will be displayed.
+     */
+    const mapRightTop = createMap();
+
+    mapRightTop.on("webglcontextlost", () => {
+      maptilersdk.displayWebGLContextLostWarning(mapRightTop);
+    });
+
+    mapRightTop.on("load", () => {
+      setTimeout(() => {
+        mapRightTop.getCanvas().getContext("webgl2").getExtension("WEBGL_lose_context").loseContext();
+      }, 1000);
+    });
+    /* *** */
+
+    /*
+     * The mapLeftBottom will lose the WebGL context and custom warning will be displayed.
+     */
+    const mapLeftBottom = createMap();
+
+    mapLeftBottom.on("webglcontextlost", () => {
+      const element = document.createElement("div");
+      element.style.position = "absolute";
+      element.style.top = "0";
+      element.style.left = "0";
+      element.style.right = "0";
+      element.style.bottom = "0";
+      element.style.margin = "auto";
+      element.style.height = "48px";
+      element.style.width = "256px";
+      element.style.display = "flex";
+      element.style.justifyContent = "center";
+      element.style.alignItems = "center";
+      element.style.transform = "rotate(-45deg)";
+      element.style.background = "peachpuff";
+      element.innerHTML = "WebGL context lost custom warning.";
+
+      mapLeftBottom.getContainer().appendChild(element);
+    });
+
+    mapLeftBottom.on("load", () => {
+      setTimeout(() => {
+        mapLeftBottom.getCanvas().getContext("webgl2").getExtension("WEBGL_lose_context").loseContext();
+      }, 1000);
+    });
+    /* *** */
+
+    /*
+     * The mapRightBottom will lose the WebGL context and the map will be recreated.
+     */
+    const mapRightBottom = createMap();
+
+    mapRightBottom.on("webglContextLost", () => {
+      mapRightBottom.recreate();
+    });
+
+    mapRightBottom.on("load", () => {
+      setTimeout(() => {
+        mapRightBottom.getCanvas().getContext("webgl2").getExtension("WEBGL_lose_context").loseContext();
+      }, 1000);
+    });
+    /* *** */
+  </script>
+</body>
+
+</html>