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A Grunt plugin for autogenerating css definitions for images in a folder

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grunt-css-imagelist

A Grunt plugin for autogenerating css definitions for images in a folder. It just gets all image files within a folder and creates a css file which contains a css definition with the found images as background images.

Getting Started

This plugin requires Grunt ~0.4.2

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-css-imagelist --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('grunt-css-imagelist');

The "css_imagelist" task

Overview

In your project's Gruntfile, add a section named css_imagelist to the data object passed into grunt.initConfig().

grunt.initConfig({
  css_imagelist: {
    options: {
      // Task-specific options go here.
    },
    your_target: {
      // Target-specific file lists and/or options go here.
    },
  },
});

Options

options.prefix

Type: String Default value: ``

A string which is prepended to each css definition.

Example: icon- would result in .icon-phone for an image phone.

options.image_path

Type: String Default value: ../images/

defines the folder where the referenced images are located.

Example: ../images/icons/ would result in background: url("../images/icons/...")

options.prepend

Type: String Default value: ``

Whatever you define here will be placed at the top of the css file, followed by 2 linebreaks. Can be used for defining global styles or inserting copyright info in a comment block or whatever.

Usage Examples

Default Options

You can use Grunt glob patterns here.

grunt.initConfig({
  css_imagelist: {
    files: {
      'dest/css/icons.css': ['images/colors.png', 'images/music.png'],
    },
  },
});

Custom Options

grunt.initConfig({
  css_imagelist: {
    options: {
      prepend: '[class^="icon-"] {\n  width: 20px;\n  height: 20px;\n}',
      prefix: '.icon-',
    },
    files: {
      'dest/css/icons.css': ['images/*.png'],
    },
  },
});

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.

To do

  • add image dimensions
  • filter input files to select images only

Release History

  • 2014-05-30 v0.1.1 updated grunt peerDependency
  • 2014-05-30 v0.1.0 initial release

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A Grunt plugin for autogenerating css definitions for images in a folder

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