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selection: handle viewport wrap around correctly

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When the viewport wraps around, the selection points may be
"incorrect".
This commit is contained in:
Daniel Eklöf 2020-05-19 18:49:42 +02:00
parent 550667a9ea
commit 08588cd0fc
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GPG key ID: 5BBD4992C116573F
5 changed files with 64 additions and 49 deletions
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28
selection.c
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@ -69,6 +69,34 @@ selection_on_rows(const struct terminal *term, int row_start, int row_end)
return false;
}
void
selection_view_up(struct terminal *term, int new_view)
{
if (likely(term->selection.start.row < 0))
return;
if (likely(new_view < term->grid->view))
return;
term->selection.start.row += term->grid->num_rows;
if (term->selection.end.row >= 0)
term->selection.end.row += term->grid->num_rows;
}
void
selection_view_down(struct terminal *term, int new_view)
{
if (likely(term->selection.start.row < 0))
return;
if (likely(new_view > term->grid->view))
return;
term->selection.start.row &= term->grid->num_rows - 1;
if (term->selection.end.row >= 0)
term->selection.end.row &= term->grid->num_rows - 1;
}
static void
foreach_selected_normal(
struct terminal *term, struct coord _start, struct coord _end,