css - LESS - combine rules of media queries with same condition -


i using following less mixin optimize background images 2x screens.

definition::

.image-2x(@image, @width: auto, @height: auto, @repeat: no-repeat) {   @filename  : ~`/(.*)\.(jpg|jpeg|png|gif)/.exec(@{image})[1]`;   @extension : ~`/(.*)\.(jpg|jpeg|png|gif)/.exec(@{image})[2]`;   background-image: ~`"url(@{filename}.@{extension})"`;   background-repeat: @repeat;   background-size: @width @height;   @media     screen , (-webkit-min-device-pixel-ratio: 2),     screen , (   min--moz-device-pixel-ratio: 2),     screen , (        min-device-pixel-ratio: 2),     screen , (                min-resolution: 192dpi),     screen , (                min-resolution: 2dppx) {       background-image: ~`"url(@{filename}@2x.@{extension})"`;     }   } }

usage::

selector1 {   .image-2x("path/to/image1.png");  } selector2 {   .image-2x("path/to/image2.png");  }

output::

selector1 {   background-image: url(path/to/image1.png);   background-repeat: no-repeat;   background-size: auto auto; } @media   screen , (-webkit-min-device-pixel-ratio: 2),   screen , (   min--moz-device-pixel-ratio: 2),   screen , (        min-device-pixel-ratio: 2),   screen , (                min-resolution: 192dpi),   screen , (                min-resolution: 2dppx) {     selector1 {       background-image: url(path/to/image1@2x.png);     }   } } selector2 {   background-image: url(path/to/image2.png);   background-repeat: no-repeat;   background-size: auto auto; } @media   screen , (-webkit-min-device-pixel-ratio: 2),   screen , (   min--moz-device-pixel-ratio: 2),   screen , (        min-device-pixel-ratio: 2),   screen , (                min-resolution: 192dpi),   screen , (                min-resolution: 2dppx) {     selector2 {       background-image: url(path/to/image2@2x.png);     }   } }

optimal output::

selector1 {   background-image: url(path/to/image1.png);   background-repeat: no-repeat;   background-size: auto auto; } selector2 {   background-image: url(path/to/image2.png);   background-repeat: no-repeat;   background-size: auto auto; } @media   screen , (-webkit-min-device-pixel-ratio: 2),   screen , (   min--moz-device-pixel-ratio: 2),   screen , (        min-device-pixel-ratio: 2),   screen , (                min-resolution: 192dpi),   screen , (                min-resolution: 2dppx) {     selector1 {       background-image: url(path/to/image1@2x.png);     }     selector2 {       background-image: url(path/to/image2@2x.png);     }   } }

to achieve thought of storing @2x background image urls in list , printing saved rulesets @ end of file within 1 media query. couldn't find way it.

can suggest solution, fine kind of approach.

i using grunt-contrib-less compile less. if compiler optimizes output, please mention it.


-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being
Read more

Delphi 7 and decode UTF-8 base64 -

in delphi 7, have widestring encoded base64(that received web service widestring result) : pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg== when decoded it, result not utf-8: <?xml version="1.0"?> <string>طھط³طھ</string> but when decoded base64decode.org, result true : <?xml version="1.0"?> <string>تست</string> i have use encddecd unit decodestring function. the problem have using decodestring . function, in delphi 7, treats decoded binary data being ansi encoded. , problem text utf-8 encoded. to continue encddecd unit have couple of options. can switch decodestream . instance, code produce utf-8 encoded text file data: {$apptype console} uses classes, encddecd; const data = 'pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg=='; var input: tstringstream; output: tfilestream; begin input := tstringstream.create(data); try output := tfilestream.
Read more

html - Is there any way to exclude a single element from the style? (Bootstrap) -

so, have img logo, overlaid on div styled background-image: url("...") , , both elements inside 2 div classes .to-color , .to-overlay respectively, black transparent overlay. is there way exclude logo style given these 2 classes? here's jsfiddle example: link html , css example: - html - <div class="to-color"> <div class="to-overlay"> <div class="respo"> <div class="row"> <div class="col-xs-4 col-xs-offset-4 text-center"> <img src="http://ansonalex.com/wp-content/uploads/2011/06/google-logo-768x260.png" alt="..." class="img-responsive"> </div> </div> </div> </div> </div> - css - .to-color { background-color: #000; } .to-overlay { opacity : 0.5; } .respo { background-image: url("https://source.unsplash.com/category/objects/1600x900"); background-position: center center;
Read more