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Less css box-shadow helper for cards & modals according to Googles Material Design spec.
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/** | |
* A mixin which helps you to add depth to elements according to the Google Material Design spec: | |
* http://www.google.com/design/spec/layout/layout-principles.html#layout-principles-dimensionality | |
* | |
* Please note that the values given in the specification cannot be used as is. To create the same visual experience | |
* the blur parameter has to be doubled. | |
* | |
* Author: Florian Kutschera (@gefangenimnetz), Conceptboard GmbH (@conceptboardapp) | |
* | |
* Example usage: | |
* | |
* .card { | |
* width: 95px; | |
* height: 95px; | |
* background: #f4f4f4; | |
* -webkit-transition: all 250ms; | |
* -moz-transition: all 250ms; | |
* transition: all 250ms; | |
* .BoxShadowHelper(1); | |
* &:hover { | |
* .BoxShadowHelper(3); | |
* -webkit-transform: translateY(-5px); | |
* -moz-transform: translateY(-5px); | |
* transform: translateY(-5px); | |
* } | |
* } | |
* | |
*/ | |
.BoxShadowHelper(@level: 1){ | |
& when (@level = 1) { | |
box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24); | |
} | |
& when (@level = 2) { | |
box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23); | |
} | |
& when (@level = 3) { | |
box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23); | |
} | |
& when (@level = 4) { | |
box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22); | |
} | |
& when (@level = 5) { | |
box-shadow: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22); | |
} | |
} |
SASS version is here: https://gist.github.com/destan/b9ccfa6243eab53460d2
@destan Your Link is Dead :(
Sass link is DEAD can you please re-upload!
@gefangenimnetz can you elaborate on why you chose the values you did? The result looks nice but I am looking esp. at the second values for v-shadow and blur.
- 0 1px 3px, 0 1px 2px
- 0 3px 6px, 0 3px 6px
- 0 10px 20px, 0 6px 6px
- 0 14px 28px, 0 10px 10px
- 0 19px 38px, 0 15px 12px
The pattern in the first set of values is pretty clear but the second set isn't. Just curious..
@rickydazla - it's just an extra shadow to add quality to the effect.
I wrote a sass implementation for whoever needs it, as the link mentioned above is dead.
@mixin shadow($depth){
@if $depth == 1 {
box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
} @else if $depth == 2 {
box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
} @else if $depth == 3 {
box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
} @else if $depth == 4 {
box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
} @else if $depth == 5 {
box-shadow: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
}
}
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I'm getting
variable @level is undefined in
error, caused by line 31... it appears to be a scoping issue from the outer.BoxShadowHelper()
method. I'm using less 1.5 compiled via grunt.If I change the initial mixin definition to below it works
What am I missing here...? I'm not even fully sure how the above change causes it to work. Thanks for the gist anyway, cheers!