I have a TreeView. Each column has a custom rendering callback
function, which I use to change the color and formatting of the text
in each cell as the data changes.
Under certain data conditions, I change the background color of the
cell to be red, to get the user's attention. I do this with
Gtk::CellRendererText::property_background_gdk() and it works great.
When the error condition clears, I need to set the color back to the
default, since using properties like this seems to be "sticky." In
other words, that cell will stay red until I change it. The problem I
have now is that when I have set_rules_hint(true) for the TreeView, I
need to figure out what color this cell should be based on the
alternating row colors.
Is there a way to query the TreeView for what a given row's
background color "should" be based on the hints? Clearly, it must be
down in the implementation somewhere, but is this interface exposed
to us?
I know I could query the background of some other cell in the row
that didn't change, or maybe stuff the color in the model somewhere,
but that feels a little funky to me. Seems like the TreeView must
know if a given row is odd or even, and therefore what the color
should be.
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