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Gradient background #2510

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Gradient background #2510

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10 changes: 10 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -729,6 +729,16 @@ All CSS color formats are supported, including hex values, keywords, `rgba()` or
</section>
```

#### Gradient Backgrounds

All CSS gradient formats are supported.

```html
<section data-background-gradient="linear-gradient(to bottom, #ddd, #191919)">
<h2>Gradient</h2>
</section>
```

#### Image Backgrounds

By default, background images are resized to cover the full page. Available options:
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4 changes: 4 additions & 0 deletions demo.html
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Expand Up @@ -197,6 +197,10 @@ <h2>Slide Backgrounds</h2>
<img width="178" height="238" data-src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" alt="Down arrow">
</a>
</section>
<section data-background-gradient="linear-gradient(to bottom, #ddd, #191919)">
<h2>Gradient Backgrounds</h2>
<pre><code class="hljs html">&lt;section data-background-gradient="linear-gradient(to bottom, #ddd, #191919)"&gt;</code></pre>
</section>
<section data-background="https://s3.amazonaws.com/hakim-static/reveal-js/image-placeholder.png">
<h2>Image Backgrounds</h2>
<pre><code class="hljs html">&lt;section data-background="image.png"&gt;</code></pre>
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5 changes: 4 additions & 1 deletion js/reveal.js
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Expand Up @@ -1180,6 +1180,7 @@
backgroundVideo: slide.getAttribute( 'data-background-video' ),
backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
backgroundColor: slide.getAttribute( 'data-background-color' ),
backgroundGradient: slide.getAttribute( 'data-background-gradient' ),
backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
backgroundPosition: slide.getAttribute( 'data-background-position' ),
backgroundTransition: slide.getAttribute( 'data-background-transition' ),
Expand All @@ -1199,9 +1200,10 @@
// Create a hash for this combination of background settings.
// This is used to determine when two slide backgrounds are
// the same.
if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
if( data.background || data.backgroundGradient || data.backgroundColor || data.backgroundGradient || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
element.setAttribute( 'data-background-hash', data.background +
data.backgroundSize +
data.backgroundGradient +
data.backgroundImage +
data.backgroundVideo +
data.backgroundIframe +
Expand All @@ -1218,6 +1220,7 @@
if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );

// Background image options are set on the content wrapper
if (data.backgroundGradient) contentElement.style.backgroundImage = data.backgroundGradient;
if( data.backgroundSize ) contentElement.style.backgroundSize = data.backgroundSize;
if( data.backgroundRepeat ) contentElement.style.backgroundRepeat = data.backgroundRepeat;
if( data.backgroundPosition ) contentElement.style.backgroundPosition = data.backgroundPosition;
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