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A polyfill for the zoom css property in firefox. The element that is zoomed must not have a margin though!
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| // this is a hacky and brutal polyfill to somewhat implement zoom in firefox | |
| // https://caniuse.com/#feat=css-zoom | |
| // it allows to use jQuery's $('.element').css({zoom: 1.5}); | |
| // there is no effort to actually implement a normal css polyfill | |
| // this polyfill also doesn't work when the zoomed element has margins since they are used to fake the new size. | |
| $.cssNumber.zoom = true; | |
| if (!("zoom" in document.body.style)) { | |
| $.cssHooks.zoom = { | |
| get: function(elem, computed, extra) { | |
| var value = $(elem).data('zoom'); | |
| return value != null ? value : 1; | |
| }, | |
| set: function(elem, value) { | |
| var $elem = $(elem); | |
| var size = { // without margin | |
| width: $elem.outerWidth(), | |
| height: $elem.outerWidth() | |
| }; | |
| $elem.data('zoom', value); | |
| if (value != 1) { | |
| $elem.css({ | |
| transform: 'scale(' + value + ')', | |
| marginLeft: (size.width * value - size.width) / 2, | |
| marginRight: (size.width * value - size.width) / 2, | |
| marginTop: (size.height * value - size.height) / 2, | |
| marginBottom: (size.height * value - size.height) / 2 | |
| }); | |
| } else { | |
| $elem.css({ | |
| transform: null, | |
| margin: null | |
| }); | |
| } | |
| } | |
| }; | |
| } |
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