- From: Simon Sapin <simon.sapin@kozea.fr>
- Date: Fri, 01 Feb 2013 14:56:08 +0100
- To: www-style@w3.org
Hi, The snap keyword for image-resolution is defined as: > If the "snap" keyword is provided, the computed ‘<resolution>’ (if > any) is the specified resolution rounded to the nearest value that > would map one image pixel to an integer number of device pixels. If > the resolution is taken from the image, then the used intrinsic > resolution is the image's native resolution similarly adjusted. <resolution> values of image-resolution count image pixels per CSS pixels. snap is about image pixel per device pixels. CSS transforms can change the ratio between CSS pixels and device pixels[1]. Therefore, should `snap` be affected by transforms? If this is done at computed value time, do implementations need to have accumulated transformation matrices that early? [1] Although I’m not sure that ratio still makes sense if the transformation has any skew component, a rotation component that is not a multiple of 90° around the Z axis, or a scale component that does not preserve aspect ratios. -- Simon Sapin
Received on Friday, 1 February 2013 13:56:32 UTC