Gulp命令自动生成精灵图

文件目录说明

gulpfile.js代码

var gulp = require('gulp');
var spritesmith = require('gulp.spritesmith');
var imagemin = require('gulp-imagemin');
var runSequence = require('run-sequence');
var open = require('gulp-open');
var configs = {
    //修改图片位置
    spritesSource: 'img/*.png',
    spritesMithConfig: {
        imgName: 'icons.png',
        cssName: 'icons.css',
        algorithm: 'binary-tree',
        padding: 6,
        cssVarMap: function(sprite) {
            sprite.name = sprite.name
        }
    },
    spritesOutputPath: 'output/'
}
//总命令
gulp.task('sprite', function(callback) {
  runSequence(
    'sprite:build', 
    'sprite:images',
    callback
  )
});
gulp.task('sprite:build', function () {
  var spriteData = gulp.src(configs.spritesSource).pipe(spritesmith(configs.spritesMithConfig));
  return spriteData.pipe(gulp.dest(configs.spritesOutputPath));
});

//压缩
gulp.task('sprite:images', function() {
  return gulp.src(configs.spritesOutputPath + '/**/*.+(png|jpg|jpeg|gif|svg)')
  // Caching images that ran through imagemin
  .pipe(imagemin({
      interlaced: true,
    }))
  .pipe(gulp.dest(configs.spritesOutputPath))
});

生成的精灵图和css

生成精灵图的同时，还会生成和原图片同名的css类名，使用起来更加方便。

.icon {
  display: inline-block;
}

// HTML 使用代码
<i class="icon icon-home"></i>
*/
.icon-card {
  background-image: url(icons.png);
  background-position: -48px -166px;
  width: 30px;
  height: 30px;
}
.icon-help {
  background-image: url(icons.png);
  background-position: 0px -166px;
  width: 42px;
  height: 42px;
}
.icon-location {
  background-image: url(icons.png);
  background-position: -192px -166px;
  width: 18px;
  height: 18px;
}
.icon-money {
  background-image: url(icons.png);
  background-position: -84px -166px;
  width: 30px;
  height: 30px;
}
.icon-note {
  background-image: url(icons.png);
  background-position: -120px -166px;
  width: 30px;
  height: 30px;
}
.icon-popbg {
  background-image: url(icons.png);
  background-position: 0px 0px;
  width: 630px;
  height: 160px;
}
.icon-user {
  background-image: url(icons.png);
  background-position: -156px -166px;
  width: 30px;
  height: 30px;
}