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Add plugin interaction demo.
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test/demo/modify-data-with-events.html
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150
test/demo/modify-data-with-events.html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>OpenSeadragon Filtering Plugin Demo</title>
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<script type="text/javascript" src='/build/openseadragon/openseadragon.js'></script>
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<style>
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textarea {
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width: 900px;
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padding: 10px;
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font-size: 16px;
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font-family: 'Courier New', Courier, monospace;
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border: 1px solid #ccc;
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border-radius: 5px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
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background-color: #fff;
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resize: vertical;
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display: block;
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max-width: 90%;
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}
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button {
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margin-top: 10px;
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padding: 10px 20px;
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font-size: 16px;
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color: #fff;
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background-color: #007bff;
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border: none;
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border-radius: 5px;
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cursor: pointer;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
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}
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button:hover {
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background-color: #0056b3;
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display: block;
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}
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</style>
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<script>
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let _pA, _pB;
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function executeScript() {
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const scriptContent = document.getElementById("scriptInput").value;
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try {
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eval(scriptContent);
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if (! (typeof window.pluginA === "function") || ! (typeof window.pluginB === "function")) {
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alert("pluginA and pluginB functions must be defined!");
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return;
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}
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if (_pA) {
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viewer.removeHandler('tile-loaded', _pA);
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viewer.removeHandler('tile-invalidated', _pA);
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}
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if (_pB) {
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viewer.removeHandler('tile-loaded', _pB);
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viewer.removeHandler('tile-invalidated', _pB);
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}
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_pA = window.pluginA;
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_pB = window.pluginB;
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viewer.addHandler('tile-loaded', _pA, null, window.orderPluginA || 0);
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viewer.addHandler('tile-invalidated', _pA, null), window.orderPluginA || 0;
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viewer.addHandler('tile-loaded', _pB, null, window.orderPluginB || 0);
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viewer.addHandler('tile-invalidated', _pB, null, window.orderPluginB || 0);
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viewer.requestInvalidate();
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} catch (error) {
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alert("Error executing script: " + error.message);
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}
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}
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</script>
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<!-- JQuery -->
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<script src="/test/lib/jquery-1.9.1.min.js"></script>
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<link rel="stylesheet" href="/test/lib/jquery-ui-1.10.2/css/smoothness/jquery-ui-1.10.2.min.css">
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<script src="/test/lib/jquery-ui-1.10.2/js/jquery-ui-1.10.2.min.js"></script>
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</head>
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<body>
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<section class="home home-title" id="title-banner">
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<h1>OpenSeadragon plugin demo</h1>
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<p>You should see two plugins interacting. You can change the order of plugins and the logics!</p>
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</section>
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<div style="display: flex; flex-direction: row;">
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<section class="demo" id="demo" style="width: 800px; height: 600px"></section>
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<div>
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<textarea id="scriptInput" rows="25" cols="120" placeholder="" style="height: 450px">
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// window.pluginA must be defined! draw small gradient square
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window.pluginA = async function(e) {
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const tile = e.tile;
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const ctx = await tile.getData('context2d');
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const gradient = ctx.createLinearGradient(0, 0, 50, 50);
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gradient.addColorStop(0, 'blue');
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gradient.addColorStop(0.5, 'green');
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gradient.addColorStop(1, 'red');
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ctx.fillStyle = gradient;
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ctx.fillRect(0, 0, 50, 50);
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await tile.setData(ctx, 'context2d');
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};
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// window.pluginB must be defined! overlay with color opacity 40%
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window.pluginB = async function(e) {
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const tile = e.tile;
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const ctx = await tile.getData('context2d'), canvas = ctx.canvas;
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ctx.fillStyle = "rgba(156, 0, 26, 0.4)";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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await tile.setData(ctx, 'context2d');
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};
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// higher number = earlier execution
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window.orderPluginA = 1;
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window.orderPluginB = 0;
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</textarea>
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<textarea style="height: 120px" disabled>
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// Application of the plugins done automatically:
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viewer.addHandler('tile-loaded', window.pluginA, null, window.orderPluginA);
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viewer.addHandler('tile-invalidated', window.pluginA, null, window.orderPluginA);
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viewer.addHandler('tile-loaded', window.pluginB, null, window.orderPluginB);
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viewer.addHandler('tile-invalidated', window.pluginB, null, window.orderPluginB);
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viewer.requestInvalidate();
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</textarea>
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<button onclick="executeScript()">Apply</button>
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</div>
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</div>
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<script>
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const viewer = window.viewer = OpenSeadragon({
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id: "demo",
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prefixUrl: "../../build/openseadragon/images/",
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tileSources: "https://openseadragon.github.io/example-images/duomo/duomo.dzi",
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drawer: 'webgl',
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crossOriginPolicy: 'Anonymous',
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wrapHorizontal: true,
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showNavigator: true,
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});
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</script>
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</body>
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</html>
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