This looks like a gtk+ bug. I did a quick and dirty conversion of your
python program to C to verify and it exhibits the same problem. You
should file a gtk+ bug report.
John
--------------------------------------------------------------------------------------
#include <gtk/gtk.h>
gint sort_func(GtkTreeModel *model,
GtkTreeIter *iter1,
GtkTreeIter *iter2)
{
GtkTreePath *path1, *path2;
gint int1, int2;
/* When the next 5 lines are left in place, the iterators are corrupted*/
path1 = gtk_tree_model_get_path(model, iter1);
path2 = gtk_tree_model_get_path(model, iter2);
g_print("%d, %d\n", gtk_tree_path_get_indices(path1)[0],
gtk_tree_path_get_indices(path2)[0]);
gtk_tree_path_free(path1);
gtk_tree_path_free(path2);
gtk_tree_model_get(model, iter1, 0, &int1, -1);
gtk_tree_model_get(model, iter2, 0, &int2, -1);
g_print("%d, %d\n", int1, int2);
return int1 - int2;
}
int main(int argc,
char * argv[])
{
GtkWidget *window;
GtkTreeModel *model;
GtkCellRenderer *render;
GtkTreeViewColumn *col1, *col0;
GtkTreeView *tree;
GtkTreeIter iter;
gtk_init(&argc, &argv);
model = (GtkTreeModel*)gtk_list_store_new(2, G_TYPE_INT, G_TYPE_INT);
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(model), 1000,
(GtkTreeIterCompareFunc)sort_func,
NULL, NULL);
tree = (GtkTreeView*)gtk_tree_view_new_with_model(model);
gtk_tree_view_set_reorderable(tree, FALSE);
render = gtk_cell_renderer_text_new();
col0 = gtk_tree_view_column_new_with_attributes("col0", render, NULL);
gtk_tree_view_column_add_attribute(col0, render, "text", 0);
gtk_tree_view_column_set_sort_column_id(col0, 1000);
render = gtk_cell_renderer_text_new();
col1 = gtk_tree_view_column_new_with_attributes("col1", render, NULL);
gtk_tree_view_column_add_attribute(col1, render, "text", 1);
gtk_tree_view_column_set_sort_column_id(col1, 1);
gtk_tree_view_append_column(tree, col0);
gtk_tree_view_append_column(tree, col1);
gtk_tree_view_set_headers_clickable(tree, TRUE);
gtk_list_store_append(GTK_LIST_STORE(model), &iter);
gtk_list_store_set(GTK_LIST_STORE(model), &iter, 0, 1, 1, 5, -1);
gtk_list_store_append(GTK_LIST_STORE(model), &iter);
gtk_list_store_set(GTK_LIST_STORE(model), &iter, 0, 8, 1, 3, -1);
gtk_list_store_append(GTK_LIST_STORE(model), &iter);
gtk_list_store_set(GTK_LIST_STORE(model), &iter, 0, 2, 1, 6, -1);
gtk_list_store_append(GTK_LIST_STORE(model), &iter);
gtk_list_store_set(GTK_LIST_STORE(model), &iter, 0, 3, 1, 8, -1);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(tree));
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit),
NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
--------------------------------------------------------------------------------
Brad Schick wrote:
Anyone have any ideas on this? If not I may try to get debug builds of
gtk+ and pygtk going to look for the issue.
Perhaps this is a gtk+ problem. Anyone know if the gtk+ mailing lists
accept problem reports writing with pygtk? I'm guess not...
-Brad
On 7/18/07, Brad Schick <[EMAIL PROTECTED]> wrote:
While writing a custom sort function for a gtk.ListStore, I found that
using the provided iterator to access the model doesn't work
correctly....
I hope I'm not missing some stupid error in my code, but this looks
like a bug. In the example below, if you comment out or remove the
first print statement in "sort_func", everything works as expected.
But if you leave in the print statement and click the first column in
the treeview, the sort gets stuck in a loop due to what looks like
corrupted iterators.
It looks like model.get_path is corrupting the iterators.
model.get_string_from_iter does the same thing. I've tried this on
both linux and windows under pygtk 2.10.4 with gtk 2.10.11 and python
2.5.1.
-------------------------------------------------------
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
def sort_func( model, iter1, iter2 ):
# When the next line is left in place, the iterators are corrupted
print model.get_path(iter1), model.get_path(iter2)
print model.get_value(iter1, 0), model.get_value(iter2, 0)
result = model.get_value(iter1, 0) - model.get_value(iter2, 0)
return min( max(result, -1), 1 ) # keep results in range
model = gtk.ListStore( int, int )
model.set_sort_func( 1000, sort_func )
tree = gtk.TreeView( model )
tree.set_reorderable( False )
render = gtk.CellRendererText()
col0 = gtk.TreeViewColumn( 'col0', render )
col0.add_attribute( render, "text", 0 )
col0.set_sort_column_id(1000)
render = gtk.CellRendererText()
col1 = gtk.TreeViewColumn( 'col1', render )
col1.add_attribute( render, "text", 1 )
col1.set_sort_column_id(1)
tree.append_column( col0 )
tree.append_column( col1 )
tree.set_headers_clickable( True )
model.append( (1,5) )
model.append( (8,3) )
model.append( (2,6) )
model.append( (3,8) )
window = gtk.Window( gtk.WINDOW_TOPLEVEL )
window.add( tree )
window.connect( "destroy", gtk.main_quit )
window.show_all()
gtk.main()
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Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
_______________________________________________
pygtk mailing list [email protected]
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
