// rotates an element vertically using a css3 transform
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@mixin rotate-element(
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$angle, // angle of rotation (90, 180, or 270)
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$include-ie: $include-ie,
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$background-color: null // bg color to use for ms chroma filter
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) {
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$rotation-origin: null;
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$rotation: rotate(#{$angle}deg);
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$ie-rotation: null;
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@if $angle == 90 {
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$ie-rotation: 1;
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$rotation-origin: 0 0;
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} @else if $angle == 180 {
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$rotation-origin: 50% 50%;
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$ie-rotation: 2;
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} @else if $angle == 270 {
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$ie-rotation: 3;
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$rotation-origin: 100% 0;
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}
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-webkit-transform: $rotation;
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-webkit-transform-origin: $rotation-origin;
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-moz-transform: $rotation;
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-moz-transform-origin: $rotation-origin;
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-o-transform: $rotation;
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-o-transform-origin: $rotation-origin;
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transform: $rotation;
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transform-origin: $rotation-origin;
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@if $include-ie {
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// In IE9 and below we have to use a BasicImage filter to achieve 90 or 270 degree
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// rotation of the text container. Text rotated using this methodology does
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// not display using ClearType font unless the element has a background. To
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// work around this, we apply a background color to the text container element
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// and then use a Chroma filter to display all pixels of that color as transparent.
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.#{$prefix}ie9m & {
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@if $background-color != null {
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background-color: $background-color;
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filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$ie-rotation}),
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progid:DXImageTransform.Microsoft.Chroma(color=#{$background-color});
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} @else {
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filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$ie-rotation});
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}
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}
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}
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}
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@mixin unrotate-element() {
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-webkit-transform: none;
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-moz-transform: none;
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-o-transform: none;
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transform: none;
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@if $include-ie {
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background-color: transparent;
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filter: none;
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}
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}
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