diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt
new file mode 100644
index 0000000000..d2f7a69467
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt
@@ -0,0 +1,27 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+ BlockContainer at (0,0) content-size 800x600 [BFC] children: not-inline
+ BlockContainer
at (8,8) content-size 784x0 children: not-inline
+ Box at (8,8) content-size 23.609375x17.46875 floating flex-container(row) [FFC] children: not-inline
+ BlockContainer at (8,8) content-size 23.609375x17.46875 flex-item [BFC] children: not-inline
+ BlockContainer
at (8,8) content-size 23.609375x17.46875 floating [BFC] children: not-inline
+ BlockContainer
at (8,8) content-size 14.265625x17.46875 floating [BFC] children: inline
+ line 0 width: 14.265625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+ frag 0 from TextNode start: 0, length: 1, rect: [8,8 14.265625x17.46875]
+ "A"
+ TextNode <#text>
+ BlockContainer at (22.265625,8) content-size 9.34375x17.46875 floating [BFC] children: inline
+ line 0 width: 9.34375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+ frag 0 from TextNode start: 0, length: 1, rect: [22.265625,8 9.34375x17.46875]
+ "B"
+ TextNode <#text>
+
+PaintableWithLines (Viewport<#document>) [0,0 800x600]
+ PaintableWithLines (BlockContainer) [0,0 800x600]
+ PaintableWithLines (BlockContainer) [8,8 784x0] overflow: [8,8 23.609375x17.46875]
+ PaintableBox (Box.display_flex) [8,8 23.609375x17.46875]
+ PaintableWithLines (BlockContainer
) [8,8 23.609375x17.46875]
+ PaintableWithLines (BlockContainer
) [8,8 23.609375x17.46875]
+ PaintableWithLines (BlockContainer
) [8,8 14.265625x17.46875]
+ TextPaintable (TextNode<#text>)
+ PaintableWithLines (BlockContainer) [22.265625,8 9.34375x17.46875]
+ TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt
new file mode 100644
index 0000000000..f04fe95628
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt
@@ -0,0 +1,23 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+ BlockContainer at (0,0) content-size 800x600 [BFC] children: not-inline
+ BlockContainer at (8,8) content-size 784x0 children: not-inline
+ BlockContainer at (8,8) content-size 23.609375x17.46875 floating [BFC] children: not-inline
+ BlockContainer
at (8,8) content-size 14.265625x17.46875 floating [BFC] children: inline
+ line 0 width: 14.265625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+ frag 0 from TextNode start: 0, length: 1, rect: [8,8 14.265625x17.46875]
+ "A"
+ TextNode <#text>
+ BlockContainer at (22.265625,8) content-size 9.34375x17.46875 floating [BFC] children: inline
+ line 0 width: 9.34375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+ frag 0 from TextNode start: 0, length: 1, rect: [22.265625,8 9.34375x17.46875]
+ "B"
+ TextNode <#text>
+
+PaintableWithLines (Viewport<#document>) [0,0 800x600]
+ PaintableWithLines (BlockContainer) [0,0 800x600]
+ PaintableWithLines (BlockContainer) [8,8 784x0] overflow: [8,8 23.609375x17.46875]
+ PaintableWithLines (BlockContainer) [8,8 23.609375x17.46875]
+ PaintableWithLines (BlockContainer
) [8,8 14.265625x17.46875]
+ TextPaintable (TextNode<#text>)
+ PaintableWithLines (BlockContainer) [22.265625,8 9.34375x17.46875]
+ TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html
new file mode 100644
index 0000000000..9d6580dc1b
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html
@@ -0,0 +1,13 @@
+
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html
new file mode 100644
index 0000000000..1f57df5973
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html
@@ -0,0 +1,9 @@
+AB
\ No newline at end of file
diff --git a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
index f53e30330e..139fd3d8ea 100644
--- a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
@@ -290,10 +290,7 @@ void BlockFormattingContext::compute_width_for_floating_box(Box const& box, Avai
auto& computed_values = box.computed_values();
auto zero_value = CSS::Length::make_px(0);
- auto width_of_containing_block = available_space.width.to_px_or_zero();
- auto width_of_containing_block_as_length_for_resolve = CSS::Length::make_px(width_of_containing_block);
- if (!available_space.width.is_definite())
- width_of_containing_block_as_length_for_resolve = CSS::Length::make_px(0);
+ auto width_of_containing_block_as_length_for_resolve = CSS::Length::make_px(available_space.width.to_px_or_zero());
auto margin_left = computed_values.margin().left().resolved(box, width_of_containing_block_as_length_for_resolve);
auto margin_right = computed_values.margin().right().resolved(box, width_of_containing_block_as_length_for_resolve);
@@ -309,18 +306,24 @@ void BlockFormattingContext::compute_width_for_floating_box(Box const& box, Avai
auto compute_width = [&](auto width) {
// If 'width' is computed as 'auto', the used value is the "shrink-to-fit" width.
if (width.is_auto()) {
-
- // Find the available width: in this case, this is the width of the containing
- // block minus the used values of 'margin-left', 'border-left-width', 'padding-left',
- // 'padding-right', 'border-right-width', 'margin-right', and the widths of any relevant scroll bars.
- auto available_width = width_of_containing_block
- - margin_left.to_px(box) - computed_values.border_left().width - padding_left
- - padding_right - computed_values.border_right().width - margin_right.to_px(box);
-
auto result = calculate_shrink_to_fit_widths(box);
- // Then the shrink-to-fit width is: min(max(preferred minimum width, available width), preferred width).
- width = CSS::Length::make_px(min(max(result.preferred_minimum_width, available_width), result.preferred_width));
+ if (available_space.width.is_definite()) {
+ // Find the available width: in this case, this is the width of the containing
+ // block minus the used values of 'margin-left', 'border-left-width', 'padding-left',
+ // 'padding-right', 'border-right-width', 'margin-right', and the widths of any relevant scroll bars.
+ auto available_width = available_space.width.to_px_or_zero()
+ - margin_left.to_px(box) - computed_values.border_left().width - padding_left
+ - padding_right - computed_values.border_right().width - margin_right.to_px(box);
+ // Then the shrink-to-fit width is: min(max(preferred minimum width, available width), preferred width).
+ width = CSS::Length::make_px(min(max(result.preferred_minimum_width, available_width), result.preferred_width));
+ } else if (available_space.width.is_indefinite() || available_space.width.is_max_content()) {
+ // Fold the formula for shrink-to-fit width for indefinite and max-content available width.
+ width = CSS::Length::make_px(result.preferred_width);
+ } else {
+ // Fold the formula for shrink-to-fit width for min-content available width.
+ width = CSS::Length::make_px(min(result.preferred_minimum_width, result.preferred_width));
+ }
}
return width;
@@ -898,7 +901,6 @@ void BlockFormattingContext::layout_floating_box(Box const& box, BlockContainer
VERIFY(box.is_floating());
auto& box_state = m_state.get_mutable(box);
- CSSPixels width_of_containing_block = available_space.width.to_px_or_zero();
resolve_vertical_box_model_metrics(box);
@@ -957,7 +959,11 @@ void BlockFormattingContext::layout_floating_box(Box const& box, BlockContainer
bool fits_next_to_preceding_float = false;
if (side == FloatSide::Left) {
tentative_offset_from_edge = preceding_float.offset_from_edge + preceding_float_state.content_width() + preceding_float_state.margin_box_right() + box_state.margin_box_left();
- fits_next_to_preceding_float = (tentative_offset_from_edge + box_state.content_width() + box_state.margin_box_right()) <= width_of_containing_block;
+ if (available_space.width.is_definite()) {
+ fits_next_to_preceding_float = (tentative_offset_from_edge + box_state.content_width() + box_state.margin_box_right()) <= available_space.width.to_px_or_zero();
+ } else if (available_space.width.is_max_content() || available_space.width.is_indefinite()) {
+ fits_next_to_preceding_float = true;
+ }
} else {
tentative_offset_from_edge = preceding_float.offset_from_edge + preceding_float_state.margin_box_left() + box_state.margin_box_right() + box_state.content_width();
fits_next_to_preceding_float = tentative_offset_from_edge >= 0;