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multi-sprite

v0.2.4

Published

Create multi-sprites and updates css, support 2x 3x sprite generator

Downloads

10

Readme

multi-sprite

一个自动合并css图片的模块,支持合并2x、3x、多切片文件夹的情况。

##安装 npm install multi-sprite

使用

require('multi-sprite')(configs)

详见:测试例子

configs

  • rootFontSize: rem单位值,切换成rem处理方式时需要设置改值,默认 750/16。当css切片宽度使用rem单位时,切换成rem处理方式。
  • srcImg: 切片文件夹,比如 src/slice
  • srcCss: 引用切片的样式文件夹,比如 src/css
  • destImg: 输出的雪碧图文件夹,比如dest/img/sprite
  • destCss: 输出的样式文件夹,比如dest/css
  • algorithm: 雪碧图的排序算法,支持:top-down, left-right, diagonal, alt-diagonal, binary-tree。默认值 binary-tree
  • padding: 切片间隙像素值,默认值0
  • engine: 图片处理引擎,支持:auto, canvas, gm,默认值gm
  • exportOpts: 导出图片的格式信息
    • format: 支持:png, jpg,默认值png
    • quality: gm引擎的png质量控制,如90
  • successCB: 图片和样式处理完成后的回调函数

切片约定

  • 配置项 configs.srcImg 为切片文件夹,可内建子文件夹,一个子文件夹对应一张雪碧图
  • 切片如有 @2x, @3x 尾缀的图片,将生成对应高清的雪碧图
  • 每个@2x 切片像素值是偶数;每个@3x 切片像素值是3的倍数;

样式约定

  • 参与合并图片的样式,使用语法 background-image:url() 引入切片
  • @2x, @3x 尾缀的图片名字与1倍图保持一致,多倍图切片不需要引入样式表,multi-sprite 会自动加上 媒体查询代码片段
  • 可参考 测试的@3x例子

##历史

  • 0.2.0 对css的更新操作使用 reworkcss/css,替代正则替换
  • 0.1.9 增加rem 处理方式
  • 0.1.6 修复win32 下雪碧图样式替换失效问题
  • 0.1.4 支持3x图片合并
  • 0.0.3 配置参数增加,执行成功后的回调
  • 0.0.1 支持2x、多雪碧图合并