mirror of
https://github.com/CoderSherlock/CoderSherlock.github.io.git
synced 2026-06-13 08:08:10 -07:00
61 lines
1.9 KiB
Markdown
61 lines
1.9 KiB
Markdown
iron-image
|
|
==========
|
|
|
|
`iron-image` is an element for displaying an image that provides useful sizing and
|
|
preloading options not found on the standard `<img>` tag.
|
|
|
|
The `sizing` option allows the image to be either cropped (`cover`) or
|
|
letterboxed (`contain`) to fill a fixed user-size placed on the element.
|
|
|
|
The `preload` option prevents the browser from rendering the image until the
|
|
image is fully loaded. In the interim, either the element's CSS `background-color`
|
|
can be be used as the placeholder, or the `placeholder` property can be
|
|
set to a URL (preferably a data-URI, for instant rendering) for an
|
|
placeholder image.
|
|
|
|
The `fade` option (only valid when `preload` is set) will cause the placeholder
|
|
image/color to be faded out once the image is rendered.
|
|
|
|
Examples:
|
|
|
|
Basically identical to `<img src="...">` tag:
|
|
|
|
```html
|
|
<iron-image src="http://lorempixel.com/400/400"></iron-image>
|
|
```
|
|
|
|
Will letterbox the image to fit:
|
|
|
|
```html
|
|
<iron-image style="width:400px; height:400px;" sizing="contain"
|
|
src="http://lorempixel.com/600/400"></iron-image>
|
|
```
|
|
|
|
Will crop the image to fit:
|
|
|
|
```html
|
|
<iron-image style="width:400px; height:400px;" sizing="cover"
|
|
src="http://lorempixel.com/600/400"></iron-image>
|
|
```
|
|
|
|
Will show light-gray background until the image loads:
|
|
|
|
```html
|
|
<iron-image style="width:400px; height:400px; background-color: lightgray;"
|
|
sizing="cover" preload src="http://lorempixel.com/600/400"></iron-image>
|
|
```
|
|
|
|
Will show a base-64 encoded placeholder image until the image loads:
|
|
|
|
```html
|
|
<iron-image style="width:400px; height:400px;" placeholder="data:image/gif;base64,..."
|
|
sizing="cover" preload src="http://lorempixel.com/600/400"></iron-image>
|
|
```
|
|
|
|
Will fade the light-gray background out once the image is loaded:
|
|
|
|
```html
|
|
<iron-image style="width:400px; height:400px; background-color: lightgray;"
|
|
sizing="cover" preload fade src="http://lorempixel.com/600/400"></iron-image>
|
|
```
|