Re: Changing foreground and background color in GtkListView rows

[marcodev comcast net]

Thanks for your help, it's making things clearer. I should mention that I am porting a gtk+1.2.x gui to 2.4 
so I'm learning the new GtkTreeView model as I go.

I used the info from the tutorial at: http://scentric.net/tutorial/sec-treeview-col-whole-row.html and 
implemented it in the following way expanding on the code below:

{
....
   list_store = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_STRING,
                                                        G_TYPE_BOOLEAN);
   gtk_tree_view_set_model(GTK_TREE_VIEW(list_view), GTK_TREE_MODEL(list_store));
   renderer = gtk_cell_renderer_text_new();
   column = gtk_tree_view_column_new_with_attributes(var_list_col_title,
                                                       renderer,
                                                       "text", 0,
                                                       "foreground", 1,
                                                       "foreground-set", 2,
                                                       NULL);
....
}

And now the routine that updates the value and color in the model looks like this:

{
......
   if(NEWLY_CHANGED)
   {
      gtk_list_store_set(list_store, ITER,
                               0, DVAR->DISPLAYED_STR,
                               1, "Black",
                               2, TRUE,
                               -1);
   }
   else
   {
      gtk_list_store_set(list_store, ITER,
                               0, DVAR->DISPLAYED_STR,
                               1, "Red",
                               2, TRUE,
                               -1);
   }
....
}

when the routine is called for the first time the "Black" code runs and sets the color correctly, after the 
timer expires the "Red" code is called but the color stays in black. Am I doing this correctly?

Thanks again.


> make the color part of your model. connect bg_color of renderer to the color
> column in model and put the respective colors into the model.
>
> http://scentric.net/tutorial/sec-treeview-col-whole-row.html
>
> Stefan
>
> marcodev comcast net wrote:
> > I have the following code creating the column and its renderer in the list:
> > {
> > ......
> >      vars_list = gtk_tree_view_new ();
> >      renderer = gtk_cell_renderer_text_new();
> >      column = gtk_tree_view_column_new_with_attributes(var_list_col_title,
> >                                                        renderer,
> >                                                        "text", 0,
> >                                                        NULL);
> >      gtk_tree_view_append_column(GTK_TREE_VIEW(vars_list), column);
> > ......
> > }
> >
> > The list displays the values of variables in memory and is updated by a timout 
> that runs periodically. When a variable is added (appended) to the list I use 
> the following:
> > void
> > APPEND_TO_CLIST(GtkListStore *LIST, int ROW, char *STRING)
> > {
> > .....
> >    GtkTreeIter iter;
> >
> >    gtk_list_store_append(LIST, &iter);
> >    gtk_list_store_set(LIST, &iter,
> >                       0, STRING,
> >                       -1);
> >
> >    if(ROW % 2 == 0)
> >    {
> >       g_object_set(renderer, "background-gdk",
> >                                   MM_GLBL->COLORS.CLIST_BG_A, NULL);
> >    }
> >    else
> >    {
> >       g_object_set(renderer, "background-gdk",
> >                                   MM_GLBL->COLORS.CLIST_BG_B, NULL);
> >    }
> > ....
> > }
> >
> > The above however is not changing the color on the background as I expected 
> it. Am I even doing this right?
> > The following issue might be related to the same problem I have with the code 
> above, when the value of a variable in the list is updated the value should be 
> displayed in one color (black) and when the value has remained unchanged for a 
> period of time then it should switch to another color (red). This is the code I 
> use for this:
> > void
> > UPDATE_CLIST_VALUE(GtkListStore *LIST, GtkTreeIter *ITER, char *STRING, 
> >                                         BOOLEAN NEWLY_CHANGED)
> > {
> > ......
> >    if (NEWLY_CHANGED)
> >    {
> >       g_object_set(renderer, "foreground", "Black", NULL);
> >    }
> >    else
> >    {
> >       g_object_set(renderer, "foreground", "Red", NULL);
> >    }
> >
> >    gtk_list_store_set(list_store, ITER,
> >                                 0, STRING,
> >                             -1);
> > //   g_object_set(renderer, "text", STRING, NULL);
> > .......
> > }
> >
> > The problem I have here is that when the color is chaned in the renderer and I 
> set the value in the store to a specific ITER then the entire column changes 
> color, I need to have only ONE iter (row) to change color as requested.
> > Any suggestions?
> >
> > Thanks!!
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
>
> -- 
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