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LibWeb: Move line boxes from Layout::Box to BlockContainer

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Per the spec, only a BlockContainer" can have line boxes, so let's not
clutter up every Layout::Box with line boxes.

This also allows us to establish an invariant that BFC and IFC always
operate on a Layout::BlockContainer.

Note that if BlockContainer has all block-level children, its line boxes
are not used for anything. They are only used in the all inline-level
children scenario.
This commit is contained in:
Andreas Kling 2021-10-06 21:53:25 +02:00
parent a0bea52a5f
commit f73aa8e2bd
13 changed files with 80 additions and 74 deletions
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7
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.h
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@ -8,17 +8,18 @@
#include <AK/Types.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Layout/BlockContainer.h>
#include <LibWeb/Layout/FormattingContext.h>
namespace Web::Layout {
class InlineFormattingContext final : public FormattingContext {
public:
InlineFormattingContext(Box& containing_block, FormattingContext* parent);
InlineFormattingContext(BlockContainer& containing_block, FormattingContext* parent);
~InlineFormattingContext();
Box& containing_block() { return context_box(); }
const Box& containing_block() const { return context_box(); }
BlockContainer& containing_block() { return static_cast<BlockContainer&>(context_box()); }
BlockContainer const& containing_block() const { return static_cast<BlockContainer const&>(context_box()); }
virtual void run(Box&, LayoutMode) override;