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dlg_listbox_select() now scrolls the list box to ensure that the

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item it's just selected is visible.

[originally from svn r6338]
This commit is contained in:
Simon Tatham 2005-09-21 17:09:07 +00:00
parent 5408f0a545
commit 8cde1bc7fe
1 changed files with 28 additions and 0 deletions
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28
unix/gtkdlg.c
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@ -549,7 +549,35 @@ void dlg_listbox_select(union control *ctrl, void *dlg, int index)
if (uc->optmenu) { if (uc->optmenu) {
gtk_option_menu_set_history(GTK_OPTION_MENU(uc->optmenu), index); gtk_option_menu_set_history(GTK_OPTION_MENU(uc->optmenu), index);
} else { } else {
int nitems;
GList *items;
gdouble newtop, newbot;
gtk_list_select_item(GTK_LIST(uc->list), index); gtk_list_select_item(GTK_LIST(uc->list), index);
/*
* Scroll the list box if necessary to ensure the newly
* selected item is visible.
*/
items = gtk_container_children(GTK_CONTAINER(uc->list));
nitems = g_list_length(items);
if (nitems > 0) {
int modified = FALSE;
g_list_free(items);
newtop = uc->adj->lower +
(uc->adj->upper - uc->adj->lower) * index / nitems;
newbot = uc->adj->lower +
(uc->adj->upper - uc->adj->lower) * (index+1) / nitems;
if (uc->adj->value > newtop) {
modified = TRUE;
uc->adj->value = newtop;
} else if (uc->adj->value < newbot - uc->adj->page_size) {
modified = TRUE;
uc->adj->value = newbot - uc->adj->page_size;
}
if (modified)
gtk_adjustment_value_changed(uc->adj);
}
} }
} }