Hi, i currently work on psppire http://savannah.gnu.org/projects/pspp/ and want to use gtktreeview for a large number of columns (2000) and rows (10000). I use only a kind of fake tree model while the actual rendering and data retrieval is done via gtk_tree_view_column_set_cell_data_func. I noticed that during redraw all columns are actually retrieved but only for the visible rows. Here is a log showing the access pattern:
(here columns 0 to 1995) render_data_cell: row: 6, column: 1996 render_data_cell: row: 6, column: 1997 render_data_cell: row: 6, column: 1998 render_data_cell: row: 6, column: 1999 render_data_cell: row: 6, column: 0 render_data_cell: row: 6, column: 1 render_data_cell: row: 6, column: 2 render_data_cell: row: 6, column: 3 render_data_cell: row: 6, column: 4 render_data_cell: row: 6, column: 5 render_data_cell: row: 6, column: 6 render_data_cell: row: 6, column: 7 render_data_cell: row: 6, column: 8 render_data_cell: row: 6, column: 9 render_data_cell: row: 6, column: 10 render_data_cell: row: 6, column: 11 render_data_cell: row: 6, column: 12 render_data_cell: row: 6, column: 13 render_data_cell: row: 6, column: 14 render_data_cell: row: 6, column: 15 Only columns 0 to 15 are visible in the window. Is there any specific reason why 2000 columns are retrieved when only 16 are visible? I configured the columns as GTK_TREE_VIEW_COLUMN_FIXED. The treeview has the fixed-height mode activated. I use gtk3 18.5 on macports. Is there a configuration of the columns or the treeview that would prevent this? The code is here: http://git.savannah.gnu.org/cgit/pspp.git/tree/src/ui/gui/psppire-data-sheet.c?h=treeview#n244 Friedrich _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
