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css - 如何设置图像宽度的解析路径?

转载 作者:行者123 更新时间:2023-11-28 08:00:00 25 4
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我有一个指向绝对位置的 LESS 文件(它需要是绝对位置,否则 grunt-usemin 将无法正确解析它),但这会导致 less 编译器在处理时无法解析图像 图像宽度()

/client/app/app.less

// logo is located at /client/assets/images/ but "/client" is the 
// web root, which is why the absolute reference is "/assets/images"
@logo-url: '/assets/images/web-header-111_253x45.gif';
@logo-width: image-width(@logo-url);
@logo-height: image-height(@logo-url);

.web-header {
width: @logo-width;
height: @logo-height;
background: url(@logo-url);
}

/gruntfile.js

  grunt.initConfig({

/* TRIMMED */

less: {
options: {
},
server: {
files: [{
src: ['client/app/app.less'],
dest: '.tmp/app/app.css'
}]
}
}

/* TRIMMED */
});

以上将抛出以下构建错误:

Warning: Running "less:server" (less) task
>> RuntimeError: error evaluating function `image-width`: ENOENT, no such file or directory 'C:\git\www-project\client\app\assets\images\web-header-111_2
53x45.gif' in client\app\app.less on line 26, column 14:
>> 25 @logo-url: '/assets/images/web-header-111_253x45.gif';
>> 26 @logo-width: image-width(@logo-url);
>> 27 @logo-height: image-height(@logo-url);
Warning: Error compiling client/app/app.less Use --force to continue.

Aborted due to warnings.

问题: 我可以设置什么来使 image-width(...) 相对于 C:\git\www-project\client 目录而不是包含 app.less 的目录进行解析?

最佳答案

如果我同时设置绝对 URL 路径并计算相对文件路径,则可以毫无问题地解析 image-width(...) 路径。

// logo is located at /client/assets/images/ but "/client" is the 
// web root, which is why the absolute reference is "/assets/images"
@root: '..';
@logo-url: '/assets/images/web-header-111_253x45.gif';
@logo-path: '@{root}@{logo-url}';
@logo-width: image-width(@logo-path);
@logo-height: image-height(@logo-path);

.web-header {
width: @logo-width;
height: @logo-height;
background: url(@logo-url);
}

关于css - 如何设置图像宽度的解析路径?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29835000/

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