Grid: Fix percent sizing #306
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nicoburns
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No, IMO we should fix the bug here ASAP and then break things later with these tests in place. |
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Weibye
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Dec 30, 2022
| @@ -687,7 +707,7 @@ fn expand_flexible_tracks( | |||
| AvailableSpace::Definite(available_space) => { | |||
| let used_space: f32 = axis_tracks.iter().map(|track| track.base_size).sum(); | |||
| let free_space = available_space - used_space; | |||
| if free_space == 0.0 { | |||
| if free_space <= 0.0 { | |||
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Can free space ever be negative?
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It can yeah. This would be the case if the containing node has a fixed size (set with the width/height property), and the contents of the the container had minimum sizes that sum to total greater than the size of the container (so the contents overflow). I hadn't considered this case either, but it came up when debugging a test, hence the fix!
alice-i-cecile
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Dec 30, 2022
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Objective
This PR addresses bugs with percentage sizing (particularly of margins and padding) found when testing the CSS Grid implementation.
Changes made
parent_sizeparameter was added tocompute_node_layoutall top-level algorithm functions. This is unfortunately necessary to make percentage sizing work correctly as percentage nodesPossible future changes
available_spaceparameter tocompute_node_layouttosizing_constraintwhich aSize<SizingConstraint>where SizingConstraint isenum { MinContent, MaxContent, Definite }. Currently the available_space parameter is duplicating information from theparent_sizeparameter when it isDefinite.parent_sizeto measure_funcs.Feedback wanted
Should the future changes block this PR being merged?