One of the few places WebKit still doesn't support high-DPI images is custom 'cursor' CSS rules. I brought this up on www-style awhile back [1] and the consensus was that using image-set was the preferred mechanism. The CSS4 images draft spec now specifies that cursor can take any <image> [2], including an image-set.
I'd like to take the first step by enabling -webkit-image-set support for 'cursor' rules on the chromium port (tracked in http://wkb.ug/99493<https://bugs.webkit.org/show_bug.cgi?id=99493>). I plan to add an ENABLE(CSS_CURSOR_SCALE) flag which adds a single 'float scale' to WebCore::Cursor that specifies the scale factor (in display pixels per logical pixel) of the custom image data in a Cursor object. It's conceivable that other mechanisms could also use this (for example, we could select the most appropriate image from a multi-resolution .cur file). Any concerns or suggestions? I've got a rough working version of a patch which I will get up for review next week sometime. Thanks, Rick [1] http://lists.w3.org/Archives/Public/www-style/2012Jul/0140.html [2] http://dev.w3.org/csswg/css4-images/#image-values
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