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LibWeb: Make IFC aware that its parent is always a BFC

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This simplifies some code and allows us to use tighter types for the
parent context everywhere.
This commit is contained in:
Andreas Kling 2022-01-23 15:22:18 +01:00
parent 83a6e698a0
commit 00bd17034d
Notes: sideshowbarker 2024-07-17 20:20:59 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/00bd17034de
5 changed files with 21 additions and 11 deletions
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2
Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
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@ -384,7 +384,7 @@ void BlockFormattingContext::compute_position(Box& box)
void BlockFormattingContext::layout_inline_children(BlockContainer& block_container, LayoutMode layout_mode)
{
InlineFormattingContext context(block_container, this);
InlineFormattingContext context(block_container, *this);
context.run(block_container, layout_mode);
}

4
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
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@ -455,7 +455,7 @@ float FlexFormattingContext::layout_for_maximum_main_size(Box& box)
auto& block_container = verify_cast<BlockContainer>(box);
BlockFormattingContext bfc(block_container, this);
bfc.run(box, LayoutMode::Default);
InlineFormattingContext ifc(block_container, &bfc);
InlineFormattingContext ifc(block_container, bfc);
if (is_row_layout()) {
ifc.run(box, LayoutMode::OnlyRequiredLineBreaks);
@ -805,7 +805,7 @@ float FlexFormattingContext::determine_hypothetical_cross_size_of_item(Box& box)
auto& block_container = verify_cast<BlockContainer>(box);
BlockFormattingContext bfc(block_container, this);
bfc.run(box, LayoutMode::Default);
InlineFormattingContext ifc(block_container, &bfc);
InlineFormattingContext ifc(block_container, bfc);
ifc.run(box, LayoutMode::OnlyRequiredLineBreaks);
return is_row_layout() ? box.height() : box.width();

2
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
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@ -95,7 +95,7 @@ OwnPtr<FormattingContext> FormattingContext::create_independent_formatting_conte
VERIFY(is_block_formatting_context());
if (child_box.children_are_inline())
return make<InlineFormattingContext>(verify_cast<BlockContainer>(child_box), this);
return make<InlineFormattingContext>(verify_cast<BlockContainer>(child_box), static_cast<BlockFormattingContext&>(*this));
// The child box is a block container that doesn't create its own BFC.
// It will be formatted by this BFC.

19
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
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@ -17,8 +17,8 @@
namespace Web::Layout {
InlineFormattingContext::InlineFormattingContext(BlockContainer& containing_block, FormattingContext* parent)
: FormattingContext(Type::Inline, containing_block, parent)
InlineFormattingContext::InlineFormattingContext(BlockContainer& containing_block, BlockFormattingContext& parent)
: FormattingContext(Type::Inline, containing_block, &parent)
{
}
@ -26,14 +26,21 @@ InlineFormattingContext::~InlineFormattingContext()
{
}
BlockFormattingContext& InlineFormattingContext::parent()
{
return static_cast<BlockFormattingContext&>(*FormattingContext::parent());
}
BlockFormattingContext const& InlineFormattingContext::parent() const
{
return static_cast<BlockFormattingContext const&>(*FormattingContext::parent());
}
InlineFormattingContext::AvailableSpaceForLineInfo InlineFormattingContext::available_space_for_line(float y) const
{
if (!parent()->is_block_formatting_context())
return { 0, context_box().width() };
AvailableSpaceForLineInfo info;
auto const& bfc = static_cast<BlockFormattingContext const&>(*parent());
auto const& bfc = parent();
for (ssize_t i = bfc.left_side_floats().boxes.size() - 1; i >= 0; --i) {
auto const& floating_box = bfc.left_side_floats().boxes.at(i);

5
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.h
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@ -15,9 +15,12 @@ namespace Web::Layout {
class InlineFormattingContext final : public FormattingContext {
public:
InlineFormattingContext(BlockContainer& containing_block, FormattingContext* parent);
InlineFormattingContext(BlockContainer& containing_block, BlockFormattingContext& parent);
~InlineFormattingContext();
BlockFormattingContext& parent();
BlockFormattingContext const& parent() const;
BlockContainer& containing_block() { return static_cast<BlockContainer&>(context_box()); }
BlockContainer const& containing_block() const { return static_cast<BlockContainer const&>(context_box()); }