Re: ListStore and Text Color

[muppet <scott asofyet org>]

On Apr 8, 2005, at 7:14 AM, Stephan Martin wrote:

> i'm entering the next step in my lesson "how to read documentation" :-)
>
> I have a ListStore with text fileds inside. Depending on the value, i 
> want
> to add the text in one special field in red or in green.
>
> Is there a way to achieve that?

There are three ways to set the color of a cell:

a) tie the foreground property to a column in your model where the 
color is stored.
b) use pango markup for the cell text (the "markup" property instead of 
the "text" property) and specify the color there.
c) use a custom cell data function to calculate and set the color.

c) is the most flexible option, giving you complete control over the 
display separated from the data.  however, cell data functions get 
called a *lot*, and have the potential to become performance 
bottlenecks.
a) and b) trade memory for speed, and couple the display rules with the 
data; you essentially precalculate and cache the color at the time you 
insert the data value into the model.

all that said, the stock browser example in gtk-demo uses cell data 
functions to set stock pixbufs and text; so you can get fairly 
sophisticated before you start to see performance problems.


You might want to read the TreeView tutorial.

http://scentric.net/tutorial/

http://scentric.net/tutorial/sec-treeview-col-whole-row.html


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