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@polymer/iron-image

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@polymer/iron-image - npm Package Compare versions

Comparing version 3.0.0-pre.21 to 3.0.0-pre.22

iron-image.d.ts

19

iron-image.js

@@ -10,2 +10,8 @@ /**

*/
import '@polymer/polymer/polymer-legacy.js';
import {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';
import {html} from '@polymer/polymer/lib/utils/html-tag.js';
import {resolveUrl} from '@polymer/polymer/lib/utils/resolve-url.js';
/**

@@ -68,12 +74,2 @@ `iron-image` is an element for displaying an image that provides useful sizing and

*/
/*
FIXME(polymer-modulizer): the above comments were extracted
from HTML and may be out of place here. Review them and
then delete this comment!
*/
import '@polymer/polymer/polymer-legacy.js';
import { Polymer } from '@polymer/polymer/lib/legacy/polymer-fn.js';
import { html } from '@polymer/polymer/lib/utils/html-tag.js';
import { resolveUrl } from '@polymer/polymer/lib/utils/resolve-url.js';
Polymer({

@@ -360,4 +356,3 @@ _template: html`

_resolveSrc: function(testSrc) {
var resolved =
resolveUrl(testSrc, this.$.baseURIAnchor.href);
var resolved = resolveUrl(testSrc, this.$.baseURIAnchor.href);
// NOTE: Use of `URL` was removed here because IE11 doesn't support

@@ -364,0 +359,0 @@ // constructing it. If this ends up being problematic, we should

@@ -15,23 +15,15 @@ {

"devDependencies": {
"@polymer/gen-typescript-declarations": "^1.2.2",
"bower": "^1.8.0",
"webmat": "^0.2.0",
"@polymer/iron-component-page": "^3.0.0-pre.21",
"@polymer/iron-demo-helpers": "^3.0.0-pre.21",
"@polymer/paper-styles": "^3.0.0-pre.21",
"@polymer/iron-demo-helpers": "^3.0.0-pre.20",
"@polymer/paper-styles": "^3.0.0-pre.20",
"wct-browser-legacy": "^1.0.1",
"@webcomponents/webcomponentsjs": "^2.0.0"
"@webcomponents/webcomponentsjs": "^2.0.0",
"@polymer/gen-typescript-declarations": "^1.5.0"
},
"scripts": {
"update-types": "bower install && gen-typescript-declarations --deleteExisting --outDir .",
"format": "webmat && npm run update-types"
"format": "webmat",
"generate-types": "gen-typescript-declarations --deleteExisting --outDir .",
"prepack": "npm run generate-types"
},
"version": "3.0.0-pre.21",
"resolutions": {
"inherits": "2.0.3",
"samsam": "1.1.3",
"supports-color": "3.1.2",
"type-detect": "1.0.0",
"@webcomponents/webcomponentsjs": "2.0.0-beta.2"
},
"version": "3.0.0-pre.22",
"main": "iron-image.js",

@@ -38,0 +30,0 @@ "author": "The Polymer Authors",

@@ -0,70 +1,87 @@

[![Published on NPM](https://img.shields.io/npm/v/@polymer/iron-image.svg)](https://www.npmjs.com/package/@polymer/iron-image)
[![Build status](https://travis-ci.org/PolymerElements/iron-image.svg?branch=master)](https://travis-ci.org/PolymerElements/iron-image)
[![Published on webcomponents.org](https://img.shields.io/badge/webcomponents.org-published-blue.svg)](https://webcomponents.org/element/@polymer/iron-image)
_[Demo and API docs](https://elements.polymer-project.org/elements/iron-image)_
## <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.
`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.
See: [Documentation](https://www.webcomponents.org/element/@polymer/iron-image),
[Demo](https://www.webcomponents.org/element/@polymer/iron-image/demo/demo/index.html).
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.
## Usage
The `fade` option (only valid when `preload` is set) will cause the placeholder
image/color to be faded out once the image is rendered.
### Installation
Examples:
```
npm install --save @polymer/iron-image
```
Basically identical to `<img src="...">` tag:
### In an HTML file
```html
<iron-image src="http://lorempixel.com/400/400"></iron-image>
<html>
<head>
<script type="module">
import '@polymer/iron-image/iron-image.js';
</script>
<style>
iron-image {
width: 400px;
height: 400px;
background-color: lightgray;
}
</style>
</head>
<body>
<iron-image sizing="cover" preload src="http://lorempixel.com/600/400"></iron-image>
</body>
</html>
```
Will letterbox the image to fit:
### In a Polymer 3 element
```html
<iron-image style="width:400px; height:400px;" sizing="contain"
src="http://lorempixel.com/600/400"></iron-image>
```
```js
import {PolymerElement} from '@polymer/polymer/polymer-element.js';
import {html} from '@polymer/polymer/lib/utils/html-tag.js';
Will crop the image to fit:
import '@polymer/iron-image/iron-image.js';
```html
<iron-image style="width:400px; height:400px;" sizing="cover"
src="http://lorempixel.com/600/400"></iron-image>
class ExampleElement extends PolymerElement {
static get template() {
return html`
<iron-image sizing="contain" fade src="http://lorempixel.com/600/400"></iron-image>
`;
}
}
customElements.define('example-element', ExampleElement);
```
Will show light-gray background until the image loads:
## Contributing
```html
<iron-image style="width:400px; height:400px; background-color: lightgray;"
sizing="cover" preload src="http://lorempixel.com/600/400"></iron-image>
If you want to send a PR to this element, here are the instructions for running
the tests and demo locally:
### Installation
```sh
git clone https://github.com/PolymerElements/iron-image
cd iron-image
npm install
npm install -g polymer-cli
```
Will show a base-64 encoded placeholder image until the image loads:
### Running the demo locally
```html
<iron-image style="width:400px; height:400px;" placeholder="data:image/gif;base64,..."
sizing="cover" preload src="http://lorempixel.com/600/400"></iron-image>
```sh
polymer serve --npm
open http://127.0.0.1:<port>/demo/
```
Will fade the light-gray background out once the image is loaded:
### Running the tests
```html
<iron-image style="width:400px; height:400px; background-color: lightgray;"
sizing="cover" preload fade src="http://lorempixel.com/600/400"></iron-image>
```sh
polymer test --npm
```
| Custom property | Description | Default |
| --- | --- | --- |
| `--iron-image-placeholder` | Mixin applied to #placeholder | `{}` |
| `--iron-image-width` | Sets the width of the wrapped image | `auto` |
| `--iron-image-height` | Sets the height of the wrapped image | `auto` |

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