Re: making GtkTreeView look like GtkTree? and Setting colums diff. colors based on level?

[John Ellis <johne bellatlantic net>]

shark centibyte org wrote:
> I like how GtkTree looks, with the lines connecting parent nodes/rows to
> child nodes/rows, and the slight indentation.  GtkTreeView has the
> indendation but not the lines.  Does anyone know how to make GtkTreeView
> look like GtkTree in that respect?

For GTK 2, aesthetic things like the lines in a tree view can no longer be set
by the application, it is up to the theme to draw such lines.

> Also, is it possible to make all the first columns be red text, but only
> if they are root-level rows?   As I understand it, GtkTreeView has you set
> the CellRenderer by column only, with no regard to what level is being
> rendered.

For all text cells that you want to have red text set for root nodes, use:


  GtkTreeViewColumn *column;
  GtkCellRenderer *cell;

  gtk_tree_view_column_set_cell_data_func(column, cell, set_cell_color_cb, NULL,
NULL);


...


void set_cell_color_cb(GtkTreeViewColumn *tree_column, GtkCellRenderer *cell,
                       GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer
data)
{
  GtkTreeIter parent;

  if (!GTK_IS_CELL_RENDERER_TEXT(cell)) return;

  if (gtk_tree_model_iter_parent(tree_model, &parent, iter) == FALSE)
    g_object_set(G_OBJECT(cell), "foreground", "red", "foreground-set", TRUE,
NULL);
  else
    g_object_set(G_OBJECT(cell), "foreground-set", FALSE, NULL);
}


set_cell_color_cb is called before each cell is rendered.


Another way to check for a root node above would be to create a GtkTreePath from
iter and test if (gtk_tree_path_get_depth(tree_path) == 0).


For setting the color by RGB value, the "foreground-gdk" property could be used
in place of "foreground" and takes a GdkColor as the value.


Greetings,
John

-- 
John Ellis <johne bellatlantic net>

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