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imweb_ispriter2

v0.5.0

Published

an intelligent merge sprite tool

Downloads

2

Readme

#智能合并CSS精灵图(iSpriter)

什么是智能?

编写 css 文件时什么都不用管, 该用什么图片用什么图片, 该怎么定位就怎么定位, 不用改变原有的 css 编写方式

发布前执行 ispriter, 所有合并图片和定位都自动帮你完成

站在巨人的肩膀上

使用nodejs实现, 依赖CSSOM, node-pngjs

使用 bin-packing 算法排列图片, 后续支持选择其他算法

在此, 感谢这些开源项目的作者, 以及给本项目贡献代码的同学

特性

  • 智能提取 background 的 url 和 position 等信息
  • 智能设置被合并图片的宽高
  • 智能判断使用了 background-position(使用px为单位)定位的图片并重新定位
  • 支持已经合并了的精灵图再次合并和定位
  • 支持图片去重
  • 支持限制合并后图片的大小
  • 支持设置合并后的图片间距
  • 支持将所有图片合并为一张, 同时所有 CSS 文件合并为一个文件 【新】
  • 支持读取 @import 的样式表进行处理 【新】
  • 支持将所有合并了图片的 CSS 统一输出, 减少代码量 【新】
  • 支持对输出的 CSS 进行压缩(使用 clean-css)【新】
  • 支持排除不需要合并的图片(在 url 后面添加 #unsprite 或者使用 config 文件来配置)【新】
  • 跳过 background-position 是 right/center/bottom 的图片
  • 跳过显式的设置平铺方式为 repreat 的图片
  • 跳过设置了 background-size 的图片

使用方法

config 的详细参数说明见CONFIG

config 文件的配置参数

{

    "input": {

        /**
         * 原 cssRoot
         */
        "cssSource": ["./css/style*.css"]
    },
    "output": {

        /**
         * 原 cssRoot
         */
        "cssDist": "./sprite/css/",

        /**
         * 原 imageRoot
         */
        "imageDist": "./img/",

        /**
         * 原 maxSize
         */
        "maxSingleSize": 60,
        
        "margin": 3
    }
}

config 的最简配置

{
    "input":  "./../test/css/", // input cssSource
    "output": "./../test/sprite_output/css/" // output cssDist
}

从代码中调用

var spriter = require('ispriter');

spriter.merge('../src/config.example.json');

or 

spriter.merge(['./css/style.css', './css/style2.css']);

or

spriter.merge({
    "input":  "./../test/css/",
    "output": "./../test/sprite_output/css/"
});

从命令行调用

npm install ispriter -g

cd ./test

ispriter -c config.example.json

or

ispriter -f style.css, style2.css ...

Mod 中调用

// Modfile
module.exports = {
    plugins: {
        sprite: "ispriter"
    },
    tasks: {
        sprite: {
            page1: {
                "input":  "./../test/css/", // input cssSource
                "output": "./../test/sprite_output/css/" // output cssDist
            },
            page2: {
                // 涉及对象类型参数需配置在options中
                options: {

                    "input": {
                        "cssSource": ["./css/style*.css"]
                    },
                    "output": {
                        "cssDist": "./sprite/css/",
                        "imageDist": "./img/",
                        "maxSingleSize": 60,
                        "margin": 5
                    }
                }
            }
        }
    }
}

排除不需要合并的图片

只要在写样式的时候, 在 background-image 的图片url加上 #unsprite 即可, 例如:

background: url(../images/loading.png#unsprite);

background: url(../images/loading.png?t=123#unsprite);

background: url(../images/loading.png#hash#unsprite);

也可以在 config 中指定 ignoreImages 来实现, 所有匹配上的图片都不会合并, 可以使用通配符, 例如:

"ignoreImages": "icons/*"

"ignoreImages": ["icons/*", "loading.png"]

Example

具体实例请查看 examples 目录下的 demo, 进入具体目录, 执行

ispriter -c config.json 

体验实际效果

License

MIT