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LibWeb: Let FormattingContext decide the automatic width of its root

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Instead of special-casing FlexFormattingContext in the intrinsic sizing
layout helpers, add FormattingContext::automatic_content_width() and let
each context subclass decide what that means.

No behavior change here, just moving this responsibility.
This commit is contained in:
Andreas Kling 2023-03-19 09:57:31 +01:00
parent e945994877
commit 00999a245c
12 changed files with 42 additions and 18 deletions
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20
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
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@ -127,7 +127,8 @@ OwnPtr<FormattingContext> FormattingContext::create_independent_formatting_conte
: FormattingContext(Type::Block, state, box)
{
}
virtual CSSPixels automatic_content_height() const override { return 0; };
virtual CSSPixels automatic_content_width() const override { return 0; }
virtual CSSPixels automatic_content_height() const override { return 0; }
virtual void run(Box const&, LayoutMode, AvailableSpace const&) override { }
};
return make<ReplacedFormattingContext>(state, child_box);
@ -170,7 +171,8 @@ OwnPtr<FormattingContext> FormattingContext::create_independent_formatting_conte
: FormattingContext(Type::Block, state, box)
{
}
virtual CSSPixels automatic_content_height() const override { return 0; };
virtual CSSPixels automatic_content_width() const override { return 0; }
virtual CSSPixels automatic_content_height() const override { return 0; }
virtual void run(Box const&, LayoutMode, AvailableSpace const&) override { }
};
return make<DummyFormattingContext>(state, child_box);
@ -208,7 +210,7 @@ OwnPtr<FormattingContext> FormattingContext::layout_inside(Box const& child_box,
return independent_formatting_context;
}
CSSPixels FormattingContext::greatest_child_width(Box const& box)
CSSPixels FormattingContext::greatest_child_width(Box const& box) const
{
CSSPixels max_width = 0;
if (box.children_are_inline()) {
@ -1093,11 +1095,7 @@ CSSPixels FormattingContext::calculate_min_content_width(Layout::Box const& box)
auto available_height = AvailableSize::make_indefinite();
context->run(box, LayoutMode::IntrinsicSizing, AvailableSpace(available_width, available_height));
if (context->type() == FormattingContext::Type::Flex) {
cache.min_content_width = box_state.content_width();
} else {
cache.min_content_width = context->greatest_child_width(box).value();
}
cache.min_content_width = context->automatic_content_width();
if (!isfinite(cache.min_content_width->value())) {
// HACK: If layout calculates a non-finite result, something went wrong. Force it to zero and log a little whine.
@ -1131,11 +1129,7 @@ CSSPixels FormattingContext::calculate_max_content_width(Layout::Box const& box)
auto available_height = AvailableSize::make_indefinite();
context->run(box, LayoutMode::IntrinsicSizing, AvailableSpace(available_width, available_height));
if (context->type() == FormattingContext::Type::Flex) {
cache.max_content_width = box_state.content_width();
} else {
cache.max_content_width = context->greatest_child_width(box).value();
}
cache.max_content_width = context->automatic_content_width();
if (!isfinite(cache.max_content_width->value())) {
// HACK: If layout calculates a non-finite result, something went wrong. Force it to zero and log a little whine.