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a11y: Add a hash function for cell infos

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Note that comparing the tree is not necessary as the nodes are already
unique per row.
This commit is contained in:
Benjamin Otte 2011-11-12 05:38:52 +01:00
parent 104ddf8a6d
commit 85fee33092
1 changed files with 24 additions and 2 deletions
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26
gtk/a11y/gtktreeviewaccessible.c
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@ -241,6 +241,28 @@ cell_info_get_path (GtkTreeViewAccessibleCellInfo *cell_info)
cell_info->node);
}
static guint
cell_info_hash (gconstpointer info)
{
const GtkTreeViewAccessibleCellInfo *cell_info = info;
guint node, col;
node = GPOINTER_TO_UINT (cell_info->node);
col = GPOINTER_TO_UINT (cell_info->cell_col_ref);
return ((node << sizeof (guint) / 2) | (node >> sizeof (guint) / 2)) ^ col;
}
static gboolean
cell_info_equal (gconstpointer a, gconstpointer b)
{
const GtkTreeViewAccessibleCellInfo *cell_info_a = a;
const GtkTreeViewAccessibleCellInfo *cell_info_b = b;
return cell_info_a->node == cell_info_b->node &&
cell_info_a->cell_col_ref == cell_info_b->cell_col_ref;
}
static void
gtk_tree_view_accessible_initialize (AtkObject *obj,
gpointer data)
@ -263,8 +285,8 @@ gtk_tree_view_accessible_initialize (AtkObject *obj,
accessible->idle_expand_path = NULL;
accessible->n_children_deleted = 0;
accessible->cell_infos = g_hash_table_new_full (g_direct_hash,
g_direct_equal, NULL, (GDestroyNotify) cell_info_free);
accessible->cell_infos = g_hash_table_new_full (cell_info_hash,
cell_info_equal, NULL, (GDestroyNotify) cell_info_free);
widget = GTK_WIDGET (data);
tree_view = GTK_TREE_VIEW (widget);