- From: Boris Zbarsky <bzbarsky@mit.edu>
- Date: Tue, 10 Feb 2015 15:25:59 -0500
- To: public-fx@w3.org
Consider this document: <!DOCTYPE html> <html style="filter: invert(90%);"> Some text </html> Note that in this document the <html> has a transparent background but a black text color by default in browsers. The canvas has a white background by default in browsers. The spec text says: Conceptually, any parts of the drawing are effected by filter operations. This includes any content, background, borders, text decoration, outline and visible scrolling mechanism of the element to which the filter is applied, and those of its descendants. The canvas background is not part of the "element to which the filter is applied", so per the current spec this document should render with light gray text on a white background. This is what Firefox does. Chrome instead seems to make the canvas background black. Which behavior do we want here? What about other cases of filters being applied to the root element? Do we want to effectively propagate these filters to the viewport, like CSS does with 'overflow' and backgrounds on the root element? -Boris
Received on Tuesday, 10 February 2015 20:26:31 UTC