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gulp-sprity

v0.2.5

Published

A gulp plugin for generating css sprite

Downloads

28

Readme

gulp-sprity

NPM version Build Status

A gulp plugin to convert a set of images into a spritesheet.

Usage

Firstly, install gulp-sprity as a development dependency:

npm install gulp-sprity --save-dev

Then, add it into your gulpfile.js:

convert by default mode, background image url with end of #sprite:

const cleanCSS = require('gulp-clean-css');
const gulpif = require('gulp-if');
const sprity = require('gulp-sprity');
const path = require('path');

function fileTypeOf(type) {
    return function (file) {
        return path.extname(file.path) === '.' + type;
    };
}

gulp.src("src/css/foo.css")
    .pipe(sprity())
    .pipe(gulpif(fileTypeOf('css'),cleanCSS()))
    .pipe(gulp.dest("build"));

input

/*foo.css*/
.icon {
    background-image: url('icon.png#sprite');
    background-repeat: no-repeat;
    width: 100px;
    height: 100px;
}

output

/*foo.css*/
.icon {
    background-image: url('sprites/foo_sprite.png');
    background-repeat: no-repeat;
    background-position: -334px 0
    width: 100px;
    height: 100px;
}

** imagePixelRatio **

gulp.src("src/css/foo.css")
    .pipe(sprity({imagePixelRatio:2}))
    .pipe(gulpif(fileTypeOf('css'),cleanCSS()))
    .pipe(gulp.dest("build"));

input

/*foo.css*/
.icon {
    background-image: url('icon.png#sprite');
    background-repeat: no-repeat;
    width: 100px;
    height: 100px;
}

output

/*foo.css*/
.icon {
    background-image: url('sprites/foo_sprite.png');
    background-repeat: no-repeat;
    background-position: -300px 40px; //ps: original position is -600px and 80px
    background-size: 400px 300px;  //ps: original size is 800px and 600px
    width: 100px;
    height: 100px;
}

spritePrefix usage:

const cleanCSS = require('gulp-clean-css');
const gulpif = require('gulp-if');
const sprity = require('gulp-sprity');
const path = require('path');

function fileTypeOf(type) {
    return function (file) {
        return path.extname(file.path) === '.' + type;
    };
}

gulp.src("src/css/foo.css")
    .pipe(sprity({
        spritePrefix: 'demo/css/sprites/'
    }))
    .pipe(gulpif(fileTypeOf('css'),cleanCSS()))
    .pipe(gulp.dest("build"));

the same as:

sprity({
        backgroundUrlHandler: function(backgroungImageUrl, imgFilePath) {
            return 'demo/css/' + backgroungImageUrl;
        },
        spritePathReplacer: function(imgFilePath, backgroungImageUrl) {
            return 'demo/css/' + backgroungImageUrl;
        }
    })

output like:

/*foo.css*/
.icon {
    background-image: url('demo/css/sprites/foo_sprite.png'); /*image file will be saved at build/demo/css/sprites/foo_sprite.png*/
    background-repeat: no-repeat;
    background-position: -334px 0
    width: 100px;
    height: 100px;
}

Parameters

keepInRoot

Type: bool default undefined

To mark whether put the image files into the same directory of image file path. For example, one file path is /Users/demo/src/images/dir1/img1.png. Another one is /Users/demo/src/images/dir2/img2.png. Then the spriter will be saved in /Users/demo/src/images.

spriteMark

Type: String default #sprite

To mark which image should be merged into a spritesheet.

spritePrefix

Type: String default: undefined

To add the prefix directory path of spritesheet and save the sprited image to the prefix directory.

imagePixelRatio

Type: Integer default undefined

To scale the background-size and background-position of the spriter for HD images.

spriteFileNameReplacer

Type: Function default: undefined

Parameters:

  • fileName: the file name of the original css file with no extname.

To change the file name of the sprited image.

backgroundUrlHandler

Type: Function default undefined

Parameters:

  • imgFilePath: origin saved path of spritesheet
  • filePath: the file path of original file

To handle the url of background-image, output what you want to insert into css file.

spritePathReplacer

Type: Function default undefined

Parameters:

  • dir: backgroung image url which will be injected into css file
  • imgFilePath: origin saved path of spritesheet
  • filePath: the file path of original file

To replace the path of a spritesheet where you want to save the spritesheet.

License

MIT License