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LibWeb: Fix grid line name placement when repeat() is used

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Before this change, parsed grid-template-columns/grid-template-rows
were represented as two lists: line names and track sizes. The problem
with this approach is that it erases the relationship between tracks
and their names, which results in unnecessarily complicated code that
restores this data (incorrectly if repeat() is involved) during layout.
This change solves that by representing line definitions as a list of
sizes and names in the order they were defined.

Visual progression https://genius.com/
This commit is contained in:
Aliaksandr Kalenik 2024-01-05 04:24:36 +01:00 • committed by Andreas Kling
parent c4d75ac11a
commit cfcc459140
7 changed files with 168 additions and 104 deletions
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64
Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp
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@ -188,15 +188,21 @@ String ExplicitGridTrack::to_string() const
}
}
GridTrackSizeList::GridTrackSizeList(Vector<CSS::ExplicitGridTrack> track_list, Vector<Vector<String>> line_names)
: m_track_list(track_list)
, m_line_names(line_names)
String GridLineNames::to_string() const
{
StringBuilder builder;
builder.append("["sv);
builder.join(' ', names);
builder.append("]"sv);
return MUST(builder.to_string());
}
GridTrackSizeList::GridTrackSizeList(Vector<Variant<ExplicitGridTrack, GridLineNames>>&& list)
: m_list(move(list))
{
}
GridTrackSizeList::GridTrackSizeList()
: m_track_list({})
, m_line_names({})
{
}
@ -208,30 +214,38 @@ GridTrackSizeList GridTrackSizeList::make_none()
String GridTrackSizeList::to_string() const
{
StringBuilder builder;
auto print_line_names = [&](size_t index) -> void {
builder.append("["sv);
for (size_t y = 0; y < m_line_names[index].size(); ++y) {
builder.append(m_line_names[index][y]);
if (y != m_line_names[index].size() - 1)
builder.append(" "sv);
}
builder.append("]"sv);
};
for (size_t i = 0; i < m_track_list.size(); ++i) {
if (m_line_names.size() > 0 && m_line_names[i].size() > 0) {
print_line_names(i);
for (auto const& line_definition_or_name : m_list) {
if (!builder.is_empty())
builder.append(" "sv);
if (line_definition_or_name.has<ExplicitGridTrack>()) {
builder.append(line_definition_or_name.get<ExplicitGridTrack>().to_string());
} else if (line_definition_or_name.has<GridLineNames>()) {
auto const& line_names = line_definition_or_name.get<GridLineNames>();
builder.append(line_names.to_string());
}
builder.append(m_track_list[i].to_string());
if (i < m_track_list.size() - 1)
builder.append(" "sv);
}
if (m_line_names.size() > 0 && m_line_names[m_track_list.size()].size() > 0) {
builder.append(" "sv);
print_line_names(m_track_list.size());
}
return MUST(builder.to_string());
}
Vector<ExplicitGridTrack> GridTrackSizeList::track_list() const
{
Vector<ExplicitGridTrack> track_list;
for (auto const& line_definition_or_name : m_list) {
if (line_definition_or_name.has<ExplicitGridTrack>())
track_list.append(line_definition_or_name.get<ExplicitGridTrack>());
}
return track_list;
}
bool GridTrackSizeList::operator==(GridTrackSizeList const& other) const
{
if (m_list.size() != other.m_list.size())
return false;
for (size_t i = 0; i < m_list.size(); ++i) {
if (m_list[i] != other.m_list[i])
return false;
}
return true;
}
}