From 121061c1de33b96eb646f6ba3514427629a7e152 Mon Sep 17 00:00:00 2001 From: jdlrobson Date: Tue, 2 May 2017 17:16:31 -0700 Subject: [PATCH] Upstream transition-transform mixin from MobileFrontend This specialised usage of transition allows hardware accelerated transitions on mobile devices and is commonly used in MobileFrontend. Change-Id: Iaa622043fdbb5be965716c88b48f30f61d259c8b --- resources/src/mediawiki.less/mediawiki.mixins.less | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/resources/src/mediawiki.less/mediawiki.mixins.less b/resources/src/mediawiki.less/mediawiki.mixins.less index 1e952b0c87..e495b63bae 100644 --- a/resources/src/mediawiki.less/mediawiki.mixins.less +++ b/resources/src/mediawiki.less/mediawiki.mixins.less @@ -58,6 +58,20 @@ transition: @value; // Chrome 26+, Firefox 16+, IE 10+, Safari 6.1+, Opera 12.1+, iOS 7+, Android 4.4+ } +// Provide a hardware accelerated transform transition +// We can't use `.transition()` because WebKit requires `-webkit-` prefix before `transform` +// Example usage: `.transition-transform( 1s, opacity 2s );` +// First parameter is additional options for `transform` transition commencing with +// duration property @see https://www.w3.org/TR/css3-transitions/#transition-duration-property +// and remaining parameters are additional transitions." +.transition-transform( ... ) { + -webkit-backface-visibility: hidden; // Older Webkit browsers: Promote element to a composite layer & involve the GPU + + -webkit-transition: -webkit-transform @arguments; // Safari 3.1-8, iOS 3.2-8.4, Android 2.1-4.4.4 + -moz-transition: -moz-transform @arguments; // Firefox 4-15 for `-moz-transition` + transition: transform @arguments; // Chrome 36+, Firefox 16+, IE 10+, Safari 9+, Opera 12.1+, iOS 9.2+, Android 36+ +} + .box-sizing( @value ) { -webkit-box-sizing: @value; // Safari 3.1-5.0, iOS 3.2-4.3, Android 2.1-3.0 -moz-box-sizing: @value; // Firefox 4-28, -- 2.20.1