I'm about to launch a Gtk2/3 version of a data collector/viewer and performance
monitor, a port from a Gtk1 app made a number of years ago.
I've got a number of problems outstanding with the GUI part that I would like
some help with and possibly some advice with some horrid code!
My first problem: I have tooltips in a tabular view of data, contained in a
GtkTreeView with a GtkListStore as model, which can grow to be quite big.
Unfortunately, the tooltips are only successfully produced in the top half of
the GtkTreeView. The lower half doesn't work -- the effect being proportional
to the size of the list rather than an absolute numeric limit.
The code is:-
/* get the tooltip details */
if (!gtk_tree_view_get_tooltip_context (tree_view, &x, &y,
keyboard_tip,
&model, &path, &iter))
return FALSE;
/* find time data and the row number (path) */
gtk_tree_model_get (model, &iter, uitable_timecol, &samptime, -1);
pathstring = gtk_tree_path_to_string (path);
/* find the column tooltip - if keyboard_tip==FALSE, then (x,y) are
* converted to bin_window coords; else treat as a widget coords.
* We want tree coords. */
if (keyboard_tip)
gtk_tree_view_convert_widget_to_tree_coords(tree_view, x, y,
&treex, &treey);
else
gtk_tree_view_convert_bin_window_to_tree_coords(tree_view, x, y,
&treex, &treey);
/* get the column, so I can get the title and the tip */
if (gtk_tree_view_get_path_at_pos(tree_view, treex, treey, NULL,
&column, NULL, NULL)) {
/* valid row, compose tooltip string in tip (snip, snip) */
g_object_get (column->button, "tooltip-text", &tip, NULL); /* A */
} else {
g_snprintf (buffer, 511, "Row does not exist (path %s)", pathstring);
/* B */
}
Following the call to gtk_tree_view_get_path_at_pos(), the first set of rows
runs code path A and I get the tooltip I want, the bottom half runs B and I
report an error.
Can anyone help shed some light on this?
Many thanks
Nigel
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