https://github.com/jackmoore/wheelzoom

A small script for zooming IMG elements with the mousewheel/trackpad.
https://github.com/jackmoore/wheelzoom

Last synced: about 2 months ago
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A small script for zooming IMG elements with the mousewheel/trackpad.

• Host: GitHub
• URL: https://github.com/jackmoore/wheelzoom
• Owner: jackmoore
• License: mit
• Created: 2012-11-26T05:35:03.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2019-09-19T12:45:17.000Z (about 5 years ago)
• Last Synced: 2024-07-25T02:10:27.424Z (2 months ago)
• Language: JavaScript
• Homepage: http://www.jacklmoore.com/wheelzoom
• Size: 109 KB
• Stars: 342
• Watchers: 16
• Forks: 95
• Open Issues: 12
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE.md

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README

        
# Wheelzoom

A small script for zooming IMG elements with the mousewheel/trackpad.  Wheelzoom works by replacing the img element's src with a transparent image, then using the original src as a background image, which can be sized and positioned. Wheelzoom is dependency free, doesn't add any extra elements to the DOM, or change the positioning of the IMG element.

## Usage:

````javascript

wheelzoom(document.querySelectorAll('img'));

// or

wheelzoom(document.querySelectorAll('img'), {zoom:0.05});

// zoom sets the zoom percent.

````

## License

[MIT License](http://opensource.org/licenses/MIT)

## Supported Browsers:

Chrome, Safari, Opera, FireFox 17+, IE9+.

## Changelog:

##### v.4.0.1 - 2019/08/13

* Added initialX and initialY for setting the initial zoomed coordinates

##### v.4.0.0 - 2018/10/09

* Replaced canvas data URI with base64 svg for creating placeholder

* Dropped IE9 support

##### v.3.1.3 - 2018/01/31

* Added 'initialZoom' option. Resolves #32

##### v.3.1.2 - 2017/04/20

* Added package.json & added to NPM.

##### v.3.1.0 - 2017/04/10

* Added 'maxZoom' option for maximum zoom level.

##### v.3.0.4 - 2015/12/15

* Automatically account for changes to the img src, to avoid requiring manually calling destroy and reapply.

##### v.3.0.3 - 2015/09/05

* Fixed zoom positioning issue in Firefox.  Fixes #17

* Fixed error when calling destroy in Firefox.  Fixes #16

* Removed debugging statement.  Fixes #15

##### v.3.0.2 - 2015/09/05

* Fixed lint warnings and bug introduced in 3.0.1

##### v.3.0.1 - 2015/09/05

* Fixed issue with src URLs that contain single quotes. Fixes #13.

##### v.3.0.0 - 2014/10/14

* Removed jQuery dependency

* Added 'wheelzoom.destroy' event for removing changes that wheelzoom has made to an element.

##### v.2.0.1 - 2014/9/9

* Merged bugfix to wrap background-image path in quotes.  Ref #8.

##### v.2.0.0 - 2014/4/17

* Simplified by dropping support for having border and padding on the img element. Borders and/or padding should be applied to the parent element, rather than the img element.

##### v.1.1.3 - 2014/4/13

* Minor code improvement.

##### v.1.1.2 - 2013/1/31

* Fixed bug with unzoom trigger.

##### v1.1.1 - 2013/1/29

* Added trigger to unzoom image: 

````javascript

	$('#example').trigger('wheelzoom.reset')

````

##### v1.1.0 - 2012/11/28

* Added dragging.

##### v1.0 - 2012/11/26

* Initial release.