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Update sprite.js: 增加可选的压缩的参数 #16

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Update sprite.js: 增加可选的压缩的参数 #16

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27 changes: 21 additions & 6 deletions tasks/sprite.js
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,8 @@ module.exports = function (grunt) {
algorithm: 'binary-tree',
// 默认使用`pngsmith`图像处理引擎
engine: 'pngsmith',
// 是否压缩单位
cssmin: true,

// 扩展参数，不建议修改，image-set 模板，占位文件
IMAGE_SET_CSS_TMPL: IMAGE_SET_CSS_TMPL,
Expand Down Expand Up @@ -205,11 +207,24 @@ module.exports = function (grunt) {
css = css.replace(cssItem.imgPath, sliceData.spriteImg);

// Add a semicolon if needed
if(!rsemicolon.test(css)) {
css += ';';
}
css += IMAGE_SET_PLACE;
css += 'background-position:-'+ coord.x +'px -'+ coord.y +'px;';
if(!rsemicolon.test(css)) {
css += ';';
}
css += IMAGE_SET_PLACE;

if (options.cssmin) {
var x, y, bgX, bgY;

x = !coord.x ? 0 : -coord.x;
y = !coord.y ? 0 : -coord.y;

bgX = x == 0 ? 0 : (x + 'px');
bgY = y == 0 ? 0 : (y + 'px');

css += 'background-position:'+ bgX + ' ' + bgY;
} else {
css += 'background-position:-'+ coord.x +'px -'+ coord.y +'px;';
}

cssItem.newCss = css;
cssItem.height = coord.height;
Expand Down Expand Up @@ -384,4 +399,4 @@ module.exports = function (grunt) {
done(ret);
});
});
};
};