2023-05-09 13:25:39 +02:00
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<!DOCTYPE html>
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2019-03-21 09:57:27 +01:00
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<html lang="en">
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2023-05-09 13:25:39 +02:00
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Scatter Doctest</title>
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<link rel="stylesheet" href="./3rdparty/highlight/styles/default.css" />
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<link rel="stylesheet" href="../css/doctest.css" />
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<script src="./3rdparty/highlight/highlight.pack.js"></script>
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<script src="../dist/iwmlib.3rdparty.js"></script>
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<script src="../dist/iwmlib.js"></script>
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<script>
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function drawPolygons() {
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debugCanvas.width = main.getBoundingClientRect().width
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let context = debugCanvas.getContext('2d')
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context.clearRect(0, 0, debugCanvas.width, debugCanvas.height)
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let stage = scatterContainer.polygon
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stage.draw(context, { stroke: '#0000FF' })
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for (let scatter of scatterContainer.scatter.values()) {
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let polygon = scatter.polygon
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polygon.draw(context, { stroke: '#0000FF' })
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}
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}
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2019-03-21 09:57:27 +01:00
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2023-05-09 13:25:39 +02:00
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function animatePolygons() {
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requestAnimationFrame((dt) => {
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drawPolygons()
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animatePolygons()
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})
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}
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</script>
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</head>
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<body onload="Doctest.run()">
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<h1><a href="index.html">lib.</a>Scatter</h1>
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<p>
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Scatter objects are UI elements that can be rotated, scaled or moved around, which typically leads to
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"scattered" layouts. Scatters come in two flavours: DOM Scatters are working with arbitrary DOM elements,
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wheras PIXI Scatter work with PIXI Containers and DisplayObjects within the PIXI scene graph. Here we
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describe the more basic DOM scatter.
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</p>
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<p>Let's look at an example.</p>
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<div id="main" class="grayBorder interactive" style="position: relative; width: 100%; height: 280px">
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<!-- Note that we need to set draggable to false to avoid conflicts. The DOM elements
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must also be positioned absolutely. -->
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<img id="women" draggable="false" style="position: absolute" src="examples/women.jpeg" />
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<img id="king" draggable="false" style="position: absolute" src="examples/king.jpeg" />
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2019-03-21 09:57:27 +01:00
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2023-05-09 13:25:39 +02:00
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<canvas
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id="debugCanvas"
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height="280"
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style="z-index: 100000; pointer-events: none; position: absolute; border: 1px solid blue"
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>
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Canvas not supported.
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</canvas>
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</div>
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2019-03-21 09:57:27 +01:00
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2023-05-09 13:25:39 +02:00
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<script class="doctest">
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let dx = 44
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2023-05-09 13:25:39 +02:00
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let app = new App()
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let scatterContainer = new DOMScatterContainer(main)
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let angle = 0 // 15
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for (let key of ['women', 'king']) {
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let image = document.getElementById(key)
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// The DOMScatter needs initial width and height. Therefore we
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// define the scatter when the image size is known, i.e. after loading...
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image.onload = (e) => {
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let scatter = new DOMScatter(image, scatterContainer, {
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x: dx,
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y: 44,
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width: e.target.naturalWidth,
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height: e.target.naturalHeight,
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rotationDegrees: angle,
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throwVisibility: 88,
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minScale: 0.5,
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maxScale: 1.5
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})
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dx += 300
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angle = -angle
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}
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}
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app.run()
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animatePolygons()
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</script>
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<h1>Interactive Content</h1>
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<p>
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Scatter objects may contain interactive HTML structures. There is one major flag that allows to simulate
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click events by using taps. If the scatter detects a tap it looks for clickable elements under or nearby the
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event position and calls the click handler. Thus gestures can be disambiguated as moves, zooms. or taps.
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Note that on touch devices you can tap beside the object if you use an object that implements the
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ITapDelegate interface. An ITapDelegate allowes a distance that can be configured by allowClickDistance. The
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default value is 44px but here we use 88px.
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</p>
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2019-07-05 13:43:39 +02:00
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2023-05-09 13:25:39 +02:00
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<div id="contentExample" class="grayBorder interactive" style="position: relative; width: 100%; height: 280px">
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<div id="interactiveContent">
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<img draggable="false" style="position: absolute" src="examples/women.jpeg" />
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<a style="position: absolute; top: 10px; right: 10px; color: white" href="javascript:alert('test link')"
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>A Link</a
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>
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<div onclick="alert('div clicked')" style="position: absolute; top: 30px; right: 10px; color: white">
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A Div with click handler
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</div>
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<svg
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onclick="alert('svg clicked')"
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style="position: absolute; right: 0px; bottom: 0px; width: 32px; height: 32px"
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viewBox="0 0 100 100"
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preserveAspectRatio="xMidYMid meet"
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>
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<circle cx="50" cy="50" r="44" stroke="white" stroke-width="8" fill="gray" />
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<circle cx="50" cy="32" r="7" fill="white" />
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<line x1="50" y1="46" x2="50" y2="78" stroke="white" stroke-width="12" />
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</svg>
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</div>
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</div>
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2019-07-12 14:33:15 +02:00
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2023-05-09 13:25:39 +02:00
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<script class="doctest">
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let contentContainer = new DOMScatterContainer(contentExample)
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let tapDelegate = new CardWrapper(interactiveContent, { allowClickDistance: 88 })
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new DOMScatter(interactiveContent, contentContainer, {
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x: 44,
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y: 44,
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width: 274,
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height: 184,
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tapDelegate,
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throwVisibility: 88,
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minScale: 0.5,
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maxScale: 1.5
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})
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</script>
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</body>
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</html>
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