On Wed, Jul 25, 2018, at 6:29 PM, Karl Tomlinson wrote: > Is there a plan to avoid the contrast problems we have mixing > document colors with system colors in other widgets? > > e.g. If one scrollbar color is specified by the document, then what ensures > that other parts of the scrollbar are visually distinct? > > Does the computed value of the other scrollbar color change so > that it contrasts with the specified color?
There are only two scrollbar color properties. If a platform has other parts which need different colors, we would derive such colors from the given one based on the native scheme and constrast. > I see some such code in GetScrollbarArrowColor(), but I haven't found > something similar for track and thumb. Does something ensure the thumb will > be visible? Both track and thumb are specified by the author, so no, there is nothing ensures that thumb will be visible if the author specifically want to hide it. > What if the user has a high contrast theme for accessibility > reasons? Does this override document colors? It follows the same color overriding settings that if browser.display.document_color_use is the default value, and the user is using high contrast theme, those properties would be ignored during style cascading, and consequently no custom scrollbar would be used. - Xidorn _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
