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LibWeb: Make CSSPixels and Length use 64-bit (double) floating point
This fixes a plethora of rounding problems on many websites. In the future, we may want to replace this with fixed-point arithmetic (bug #18566) for performance (and consistency with other engines), but in the meantime this makes the web look a bit better. :^) There's a lot more things that could be converted to doubles, which would reduce the amount of casting necessary in this patch. We can do that incrementally, however.
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30262d7023
commit
655d9d1462
80 changed files with 298 additions and 299 deletions
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@ -751,7 +751,7 @@ void GridFormattingContext::resolve_intrinsic_track_sizes(AvailableSpace const&
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// 5. If any track still has an infinite growth limit (because, for example, it had no items placed in
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// it or it is a flexible track), set its growth limit to its base size.
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for (auto& track : tracks_and_gaps) {
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if (track.growth_limit == INFINITY) {
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if (!isfinite(track.growth_limit.value())) {
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track.growth_limit = track.base_size;
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}
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}
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@ -774,7 +774,7 @@ void GridFormattingContext::distribute_extra_space_across_spanned_tracks_base_si
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// 2. Distribute space up to limits:
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// FIXME: If a fixed-point type were used to represent CSS pixels, it would be possible to compare with 0
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// instead of epsilon.
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while (extra_space > NumericLimits<float>().epsilon()) {
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while (extra_space > NumericLimits<double>().epsilon()) {
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auto all_frozen = all_of(spanned_tracks, [](auto const& track) { return track.base_size_frozen; });
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if (all_frozen)
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break;
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@ -816,7 +816,7 @@ void GridFormattingContext::distribute_extra_space_across_spanned_tracks_growth_
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// 1. Find the space to distribute:
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CSSPixels spanned_tracks_sizes_sum = 0;
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for (auto& track : spanned_tracks) {
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if (track.growth_limit != INFINITY) {
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if (isfinite(track.growth_limit.value())) {
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spanned_tracks_sizes_sum += track.growth_limit;
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} else {
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spanned_tracks_sizes_sum += track.base_size;
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@ -830,7 +830,7 @@ void GridFormattingContext::distribute_extra_space_across_spanned_tracks_growth_
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// 2. Distribute space up to limits:
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// FIXME: If a fixed-point type were used to represent CSS pixels, it would be possible to compare with 0
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// instead of epsilon.
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while (extra_space > NumericLimits<float>().epsilon()) {
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while (extra_space > NumericLimits<double>().epsilon()) {
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auto all_frozen = all_of(spanned_tracks, [](auto const& track) { return track.growth_limit_frozen; });
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if (all_frozen)
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break;
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@ -957,7 +957,7 @@ void GridFormattingContext::increase_sizes_to_accommodate_spanning_items_crossin
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}
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distribute_extra_space_across_spanned_tracks_growth_limit(item_min_content_contribution, intrinsic_maximum_tracks);
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for (auto& track : spanned_tracks) {
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if (track.growth_limit == INFINITY) {
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if (!isfinite(track.growth_limit.value())) {
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// If the affected size is an infinite growth limit, set it to the track’s base size plus the planned increase.
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track.growth_limit = track.base_size + track.planned_increase;
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// Mark any tracks whose growth limit changed from infinite to finite in this step as infinitely growable
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@ -982,7 +982,7 @@ void GridFormattingContext::increase_sizes_to_accommodate_spanning_items_crossin
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auto item_max_content_contribution = calculate_max_content_contribution(item, dimension);
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distribute_extra_space_across_spanned_tracks_growth_limit(item_max_content_contribution, max_content_maximum_tracks);
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for (auto& track : spanned_tracks) {
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if (track.growth_limit == INFINITY) {
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if (!isfinite(track.growth_limit.value())) {
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// If the affected size is an infinite growth limit, set it to the track’s base size plus the planned increase.
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track.growth_limit = track.base_size + track.planned_increase;
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} else {
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@ -1058,7 +1058,7 @@ void GridFormattingContext::maximize_tracks(AvailableSpace const& available_spac
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while (free_space_px > 0) {
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auto free_space_to_distribute_per_track = free_space_px / tracks.size();
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for (auto& track : tracks) {
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VERIFY(track.growth_limit != INFINITY);
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VERIFY(isfinite(track.growth_limit.value()));
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track.base_size = min(track.growth_limit, track.base_size + free_space_to_distribute_per_track);
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}
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if (get_free_space_px() == free_space_px)
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