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Fix hierbox line characters WRT item visibility

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Hierarchical listboxes draw items with upper-left corner, lower-left
corner, or horizontal border characters to indicate whether a given item is
the first item in a listbox, the last, or any other, respectively.
However, the wrong character can be drawn if there are invisible items: if
an item is the first (or last) visible item but there is an invisible item
before (or after) it, it will be drawn with a horizontal border character,
not a corner.

This patch fixes that problem using traverse_listbox_items_list in
display_listbox_item to ignore invisible items when determining whether
an item is either the first or the last among its siblings.
This commit is contained in:
Miciah Dashiel Butler Masters 2008-07-08 08:57:30 +00:00
parent f1dee0d04f
commit 66e1baec77
1 changed files with 17 additions and 9 deletions
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26
src/bfu/listbox.c
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@ -401,18 +401,26 @@ display_listbox_item(struct listbox_item *item, void *data_, int *offset)
case BI_LEAF:
case BI_SEPARATOR:
{
struct listbox_item *root = data->box->ops->get_root(item);
const struct listbox_item *const prev;
if (root) {
if (item == root->child.prev) {
str[1] = BORDER_SDLCORNER;
}
prev = traverse_listbox_items_list(item, data->box,
-1, 1, NULL, NULL);
if (item == prev) {
/* There is no visible item before @item, so it
* must be the first item in the listbox. */
str[1] = BORDER_SULCORNER;
} else {
LIST_OF(struct listbox_item) *p = data->box->items;
const struct listbox_item *const next;
if (p->next == item) {
str[1] = BORDER_SULCORNER;
} else if (p->prev == item) {
next == traverse_listbox_items_list(item,
data->box, 1, 1, NULL, NULL);
if (item == next
|| item->depth != next->depth) {
/* There is no visible item after @item
* at the same depth, so it must be the
* last in its folder. */
str[1] = BORDER_SDLCORNER;
}
}