RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 15:37:46 +00:00
Code Issues Activity Actions

LibWeb: Align with spec "stretch auto tracks" step in GFC

Browse source 
Now, we will evenly distribute the remaining free space across tracks
using the auto max-tracks sizing function, exactly as the specification
states. Many tests are affected, but they are not visually broken.

Fixes https://github.com/SerenityOS/serenity/issues/22798
This commit is contained in:
Aliaksandr Kalenik 2024-01-16 12:13:27 +01:00 • committed by Andreas Kling
parent dd9f3c980f
commit 9e23503c9c
21 changed files with 233 additions and 207 deletions
Download patch file Download diff file Expand all files Collapse all files

24
Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
View file

@ -1302,13 +1302,11 @@ void GridFormattingContext::expand_flexible_tracks(GridDimension const dimension
void GridFormattingContext::stretch_auto_tracks(GridDimension const dimension)
{
// https://drafts.csswg.org/css-grid/#algo-stretch
// https://www.w3.org/TR/css-grid-2/#algo-stretch
// 12.8. Stretch auto Tracks
// When the content-distribution property of the grid container is normal or stretch in this axis,
// this step expands tracks that have an auto max track sizing function by dividing any remaining
// positive, definite free space equally amongst them. If the free space is indefinite, but the grid
// container has a definite min-width/height, use that size to calculate the free space for this
// step instead.
// This step expands tracks that have an auto max track sizing function by dividing any remaining positive,
// definite free space equally amongst them. If the free space is indefinite, but the grid container has a
// definite min-width/height, use that size to calculate the free space for this step instead.
auto content_distribution_property_is_normal_or_stretch = false;
if (dimension == GridDimension::Column) {
@ -1325,22 +1323,18 @@ void GridFormattingContext::stretch_auto_tracks(GridDimension const dimension)
auto& tracks_and_gaps = dimension == GridDimension::Column ? m_grid_columns_and_gaps : m_grid_rows_and_gaps;
auto& available_size = dimension == GridDimension::Column ? m_available_space->width : m_available_space->height;
CSSPixels used_space = 0;
for (auto& track : tracks_and_gaps) {
if (!track.max_track_sizing_function.is_auto(available_size))
used_space += track.base_size;
}
CSSPixels remaining_space = available_size.is_definite() ? available_size.to_px_or_zero() - used_space : 0;
auto count_of_auto_max_sizing_tracks = 0;
for (auto& track : tracks_and_gaps) {
if (track.max_track_sizing_function.is_auto(available_size))
count_of_auto_max_sizing_tracks++;
}
CSSPixels remaining_space = get_free_space(*m_available_space, dimension).to_px_or_zero();
auto remaining_space_to_distribute_per_track = remaining_space / count_of_auto_max_sizing_tracks;
for (auto& track : tracks_and_gaps) {
if (track.max_track_sizing_function.is_auto(available_size))
track.base_size = max(track.base_size, remaining_space / count_of_auto_max_sizing_tracks);
if (!track.max_track_sizing_function.is_auto(available_size))
continue;
track.base_size += remaining_space_to_distribute_per_track;
}
}