There is an event "core-header-transform" that you can listen for header transform changes. Here is a jsbin showing how you can use it to adjust font color: http://jsbin.com/kikihiyifati/1/edit
We need to add docs for this and should probably make this easier ( https://github.com/Polymer/core-scroll-header-panel/issues/3) On Sat, Aug 30, 2014 at 4:10 AM, <[email protected]> wrote: > Hey guys, thanks for all the great work! > > I am trying to set up a core-scroll-header-panel with a background image > for #headerBg and a background-color for #condensedHeaderBg like in Rob > Dodson's I/O-14 demo, but get stuck with defining text colors. > > The problems is that you are typically choosing a contrasting color for > text sitting on top of a background-image within the header panel, but when > you add a background color that appears when users scroll down and the > background images fades away, you would probably often want that background > color to be contrasting to the background image as well, which would make > the text unreadable. > > So, I would probably need a method to add a color property to > #core_sroll_header_panel whenever #condensedHeaderBg is triggered by the > scroll event. Would that be feasible somehow? > > Lex > > Follow Polymer on Google+: plus.google.com/107187849809354688692 > --- > You received this message because you are subscribed to the Google Groups > "Polymer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/polymer-dev/d1d4acc3-4476-429a-a0ec-b4000c90f56b%40googlegroups.com > <https://groups.google.com/d/msgid/polymer-dev/d1d4acc3-4476-429a-a0ec-b4000c90f56b%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > Follow Polymer on Google+: plus.google.com/107187849809354688692 --- You received this message because you are subscribed to the Google Groups "Polymer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/polymer-dev/CAAGTQkC0DOd85AHz99uefpOf2CAFgtdM0MM9cg29uwZzpcgjGQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
