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test-images.html
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test-images.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="apple-touch-icon" sizes="180x180" href="img/apple-touch-icon.png">
<link rel="icon" type="image/png" sizes="32x32" href="img/favicon-32x32.png">
<link rel="shortcut icon" href="img/favicon.ico">
<link rel="stylesheet" href="./dist/bootstrap-dark.css">
<style>
@media (prefers-color-scheme: dark) {
img.special {
opacity: .75;
filter: brightness(.8) contrast(1.2);
transition: all .5s ease-in-out, filter .5s ease-in-out;
}
img.special:hover {
opacity: 1;
filter: none;
}
}
@media (prefers-color-scheme: dark) {
#vino-avatar #spec {
/* opacity: 0; */
visibility: hidden;
}
#vino-avatar #beard {
opacity: 1;
}
}
@media (prefers-color-scheme: no-preference), (prefers-color-scheme: light) {
.black-back {
background-color: #000;
}
}
</style>
<title>More about dark mode images</title>
</head>
<body>
<header>
<nav class="navbar navbar-dark navbar-expand-lg navbar-light bg-primary">
<div class="container">
<a class="navbar-brand">bootstrap-dark</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto" id="nav-links"></ul>
</div>
</div>
</nav>
</header>
<main>
<div class="container mt-5 mb-5">
<div class="row"><div class="col">
<h1>Dark Mode Images</h1>
<p>Read the <a href="readme.html">README.md</a> for more information on these concepts.</p>
<h2>Apply CSS to the image</h2>
<p class="text-center">
<img class="special img-thumbnail" src="./img/a-bug.jpg" width="320" height="240">
<small><br>Image:
"<a href="https://vlad.studio/wallpaper/bug">A Bug</a>"
© Vlad Gerasimov - <a href="https://vlad.studio/">http:https://vlad.studio</a></small>
</p>
<p>
<div class="card-deck">
<div class="card mx-auto op-img-eg" style="max-width:320px">
<div class="display-block black-back">
<img src="./img/a-bug.jpg" width="100%" height="240" style="opacity:0.75 !important; filter: none">
</div>
<div class="card-body">
<p class="card-text text-center"><code>opacity: 0.75;</code><small><br>(On black background)</small></p>
</div>
</div>
<div class="card mx-auto" style="max-width:320px">
<img src="./img/a-bug.jpg" width="100%" height="240" style="opacity:1 !important; filter: grayscale(50%)">
<div class="card-body">
<p class="card-text text-center"><code>filter: grayscale(50%);</code></p>
</div>
</div>
<div class="card mx-auto" style="max-width:320px">
<img src="./img/a-bug.jpg" width="100%" height="240" style="opacity:1 !important; filter: brightness(.8) contrast(1.2)">
<div class="card-body">
<p class="card-text text-center"><code>filter: brightness(.8) contrast(1.2)</code></p>
</div>
</div>
</div>
</p>
<h2>Use Responsive Images</h2>
<p class="text-center">
<a href="#" data-toggle="modal" data-target="#exampleModal"><picture>
<source srcset="./img/when-the-day-comes.jpg" media="(prefers-color-scheme: dark)">
<img src="./img/when-the-night-comes.jpg" width="320" height="240" class="img-thumbnail">
</picture></a>
<small><br>Image:
<span class="d-dark-none">"<a href="https://vlad.studio/wallpaper/when_the_night_comes">When The Night Comes</a>"</span>
<span class="d-none d-dark-inline">"<a href="https://vlad.studio/wallpaper/when_the_day_comes">When The Day Comes</a>"</span>
© Vlad Gerasimov - <a href="https://vlad.studio/">http:https://vlad.studio</a></small>
</p>
<div id="exampleModal" class="modal fade" tabindex="-1" role="dialog">
<div class="modal-dialog modal-dialog-centered modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Responsive Images</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body text-center">
<picture>
<source srcset="./img/when-the-day-comes.jpg" media="(prefers-color-scheme: dark)">
<img src="./img/when-the-night-comes.jpg" class="img-fluid" style="width:100%">
</picture><!--
<small><br>Image:
<span class="d-dark-none">"<a href="https://vlad.studio/wallpaper/when_the_night_comes">When The Night Comes</a>"</span>
<span class="d-none d-dark-inline">"<a href="https://vlad.studio/wallpaper/when_the_day_comes">When The Day Comes</a>"</span>
© Vlad Gerasimov - <a href="https://vlad.studio/">http:https://vlad.studio</a></small> -->
</div>
</div>
</div>
</div>
<h2>SVG ...</h2>
</div></div>
<div class="row"><div class="col-md-6">
<p>... as in-line DOM elements that can be styled with CSS.</p>
<p class="text-center">
<style>
@media (prefers-color-scheme: dark) {
#icon #darkmode {
fill: #efefef;
}
}
</style>
<svg width="128" height="128" id="icon"
viewBox="0 0 100 100" version="1.1" xmlns="http:https://www.w3.org/2000/svg" xmlns:xlink="http:https://www.w3.org/1999/xlink">
<g id="darkmode" fill="#101010" fill-rule="nonzero">
<path d="M50,1.78e-15 C77.61,1.78e-15 100,22.39 100,50 C100,77.61 77.61,100 50,100 C22.39,100 0,77.61 0,50 C0,22.39 22.39,1.78e-15 50,1.78e-15 Z M50,6 C26,6 6,26 6,50 C6,74 26,94 50,94 L50,75 C64,75 75,64 75,50 C75,36 64,25 50,25 L50,6 Z"></path>
<path d="M50,25 C50,25 50,75 50,75 C36,75 25,64 25,50 C25,36 36,25 50,25 Z"></path>
</g>
</svg>
<small class="text-info"><br>As in-line <code><svg></code><br></small>
</p>
<hr>
<p>
It's not only color SVG attributes (e.g. `<code>fill</code>` & `<code>stroke</code>`) that can be manipulated. Also try `<code>visibility</code>` & `<code>opacity</code>`.<br>
</p>
<p class="text-center">
<img id="vino-avatar" height="240" width="100%" src="./img/vino-avatar.svg">
<small><br>² Uses <a href="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/iconic/SVGInjector">SVGInjector</a> © Waybury to convert to in-line.</small>
</p>
</div><div class="col-md-6">
<p>... with the dark mode media query internal to the SVG.</p>
<p class="text-center">
<img height="128" width="128" src="./img/dark-mode.svg">
<small class="text-info"><br>As <code><img></code><br><b><i>[³ Only works on Firefox & Opera browsers]</i></b></small>
</p>
<p class="text-center">
<object height="128" width="128" type="image/svg+xml" data="./img/dark-mode.svg"></object>
<small class="text-info"><br>As <code><object></code></small>
</p>
<p class="text-center">
<embed height="128" width="128" type="image/svg+xml" src="./img/dark-mode.svg" />
<small class="text-info"><br>As <code><embed></code></small>
</p>
<p class="text-center">
<iframe height="128" width="128" frameborder="0" src="./img/dark-mode.svg"></iframe>
<small class="text-info"><br>As <code><iframe></code></small>
</p>
</div></div>
</div>
</main>
<footer id="copyright" class="text-center">
<small class="text-muted">© 2020</small>
</footer>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.bundle.min.js"></script>
<!-- from: https://github.com/iconic/SVGInjector -->
<script src="https://cdn.jsdelivr.net/gh/iconic/[email protected]/dist/svg-injector.min.js"></script>
<script>
$(document).ready(function() {
// only works if jQuery loaded
$('[data-toggle="tooltip"]').tooltip();
// ----- Replace SVG ----------------------
/*
There are a number of ways to use SVG on a page (object, embed, iframe,
img, CSS background-image) but to unlock the full potential of SVG,
including full element-level CSS styling and evaluation of embedded
JavaScript, the full SVG markup must be included directly in the DOM.
*/
var svg = document.querySelectorAll("#vino-avatar");
var $w = svg[0].getAttribute("width");
var $h = svg[0].getAttribute("height");
// Options
var $injectorOptions = {
evalScripts: 'once',
// pngFallback: 'assets/png',
each: function(svg) {
// Callback after each SVG is injected
svg.setAttribute('width', $w);
svg.setAttribute('height', $h);
}
};
// Trigger the injection
SVGInjector(svg, $injectorOptions);
// ----- Nav & Copyright ------------------
$.ajax( {
url: './navbar.htm', type: 'get',
success: function(content) {
$("#nav-links").html( content );
$("#nav-tests").addClass("active");
$("#nav-images").addClass("active");
}
} );
$.ajax( {
url: './copyright.htm', type: 'get',
success: function(content) {
$("#copyright").html( content );
}
} );
});
</script>
</body>
</html>