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Using Compass to generate normal and retina sprite maps
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| $sprites: sprite-map("sprites/*.png"); | |
| $sprites-retina: sprite-map("sprites-retina/*.png"); | |
| @mixin sprite-background($name) { | |
| background-image: sprite-url($sprites); | |
| background-position: sprite-position($sprites, $name); | |
| background-repeat: no-repeat; | |
| display: block; | |
| height: image-height(sprite-file($sprites, $name)); | |
| width: image-width(sprite-file($sprites, $name)); | |
| @media (min--moz-device-pixel-ratio: 1.5), (-o-min-device-pixel-ratio: 3/2), (-webkit-min-device-pixel-ratio: 1.5), (min-device-pixel-ratio: 1.5), (min-resolution: 1.5dppx) { | |
| background-image: sprite-url($sprites-retina); | |
| @include background-size(ceil(image-width(sprite-path($sprites-retina)) / 2) auto); | |
| @if (sprite-position($sprites, $name) != sprite-position($sprites-retina, $name)) { | |
| $ypos: round(nth(sprite-position($sprites-retina, $name), 2) / 2); | |
| background-position: 0 $ypos; | |
| } | |
| } | |
| } | |
| // Usage. | |
| .mail-icon { | |
| @include sprite-background(mail); | |
| } |
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Moved the
background-image: sprite-url($sprites-retina);before the all theimage-width,sprite-positionandsprite-pathcall to prevent undefined sprite file error.