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Aegisub
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Fix shifting contiguous selections downward 

Reverse iterators behave differently from regular iterators when
swapping (regular iterators continue to point at the same elements,
while reverse iterators do not), so instead use regular iterators with a
negative step for shifting down.
This commit is contained in:
Thomas Goyne 2013-09-30 17:01:15 -07:00
parent 921d5ed01a
commit bbd4cbef78
1 changed files with 14 additions and 13 deletions
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27
aegisub/src/command/grid.cpp
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@ -350,18 +350,19 @@ struct grid_tags_simplify : public Command {
};
template<class T, class U>
static bool move_one(T begin, T end, U const& value) {
static bool move_one(T begin, T end, U const& to_move, int step) {
size_t move_count = 0;
T prev = end;
for (; begin != end; ++begin) {
typename U::key_type cur = dynamic_cast<typename U::key_type>(&*begin);
bool in_set = !!value.count(cur);
if (!in_set && cur)
prev = begin;
else if (in_set && prev != end) {
begin->swap_nodes(*prev);
prev = begin;
if (++move_count == value.size())
auto prev = end;
for (auto it = begin; it != end; std::advance(it, step)) {
auto cur = dynamic_cast<typename U::key_type>(&*it);
if (!cur) continue;
if (!to_move.count(cur))
prev = it;
else if (prev != end) {
it->swap_nodes(*prev);
prev = it;
if (++move_count == to_move.size())
break;
}
}
@ -382,7 +383,7 @@ struct grid_move_up : public Command {
}
void operator()(agi::Context *c) {
if (move_one(c->ass->Line.begin(), c->ass->Line.end(), c->selectionController->GetSelectedSet()))
if (move_one(c->ass->Line.begin(), c->ass->Line.end(), c->selectionController->GetSelectedSet(), 1))
c->ass->Commit(_("move lines"), AssFile::COMMIT_ORDER);
}
};
@ -400,7 +401,7 @@ struct grid_move_down : public Command {
}
void operator()(agi::Context *c) {
if (move_one(c->ass->Line.rbegin(), c->ass->Line.rend(), c->selectionController->GetSelectedSet()))
if (move_one(--c->ass->Line.end(), c->ass->Line.begin(), c->selectionController->GetSelectedSet(), -1))
c->ass->Commit(_("move lines"), AssFile::COMMIT_ORDER);
}
};