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<head>
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<title>Flippable Doctest</title>
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<link rel="stylesheet" href="../css/doctest.css" />
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<link rel="stylesheet" href="../css/flipeffect.css" />
<template id="flipTemplate">
<div class="flipWrapper">
<div class="flipCard">
<div class="flipFace front"></div>
<div class="flipFace back" style="visibility: hidden"></div>
</div>
<!-- Very tricky problem to scale svgs: see https://css-tricks.com/scale-svg/ -->
<!-- SVG viewPort interferes with DOMMatrix calculations: see
https://stackoverflow.com/questions/70696387/how-to-get-transform-matrix-of-a-dom-element-->
<div class="flipButton backBtn" style="visibility:hidden;">
<svg viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet" style="width:inherit; height:inherit;">
<g stroke-width="8" stroke="white">
<circle cx="50" cy="50" r="44" fill="gray" />
<line x1="30" y1="30" x2="70" y2="70" />
<line x1="30" y1="70" x2="70" y2="30" />
</g>
</svg>
</div>
<div class="flipButton infoBtn">
<svg viewBox="0 0 100 100" preserveAspectRatio="xMidYMid meet" style="width:inherit; height:inherit;">
<circle cx="50" cy="50" r="44" stroke="white" stroke-width="8" fill="gray" />
<circle cx="50" cy="32" r="7" fill="white" />
<line x1="50" y1="46" x2="50" y2="78" stroke="white" stroke-width="12" />
</svg>
</div>
</div>
</template>
</head>
<body onload="Doctest.run()">
<h1>
Flippable
</h1>
<p>
The flip effect simulates a flip between a front and back view of an object
by means of a 3D rotation. The DOMFlippable class implements this effect for two
DOM nodes, one as the front view, the other as the back view. Both views are connected
via a HTML template that defines the placeholders for front and back views. The
style file "css/flipeffect.css" holds reasonable default styles for this kind of
templates.
</p>
<p>
The SVG buttons have to be wrapped in an HTML DOM element which handles events. Otherwise,
the viewbox of the SVG will interfere with the coordinate transformation.
</p>
<pre><code>
<template id="flipTemplate">
<div class="flipWrapper">
<div class="flipCard">
<div class="flipFace front"></div>
<div class="flipFace back" style="visibility:hidden;"></div>
</div>
<div class="flipButton backBtn" .../>
<svg .../>
</div>
<div class="flipButton infoBtn" .../>
<svg .../>
</div>
</div>
</template>
</code>
</pre>
<h3>Example</h3>
<main id="main" style="border: 1px solid gray; position: relative; height: 256px"></main>
<script class="doctest">
let scatterContainer = new DOMScatterContainer(main, { stopEvents: false })
if (Capabilities.supportsTemplate()) {
let flip = new DOMFlip(
scatterContainer,
flipTemplate,
new ImageLoader('./examples/king.jpeg'),
new ImageLoader('./examples/women.jpeg'),
{ tapDelegateFactory: CardWrapper, preloadBack: true }
)
flip.load().then((flip) => {
flip.centerAt({ x: 150, y: 120 })
})
} else {
alert('Templates not supported, use Edge, Chrome, Safari or Firefox.')
}
</script>
</body>
</html>