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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/layout/ng/mathml/ng_math_space_layout_algorithm.h"
#include "third_party/blink/renderer/core/layout/ng/ng_block_break_token.h"
#include "third_party/blink/renderer/core/layout/ng/ng_length_utils.h"
namespace blink {
NGMathSpaceLayoutAlgorithm::NGMathSpaceLayoutAlgorithm(
const NGLayoutAlgorithmParams& params)
: NGLayoutAlgorithm(params) {
DCHECK(params.fragment_geometry.scrollbar.IsEmpty());
DCHECK(params.space.IsNewFormattingContext());
}
scoped_refptr<const NGLayoutResult> NGMathSpaceLayoutAlgorithm::Layout() {
DCHECK(!BreakToken());
LayoutUnit intrinsic_block_size = BorderScrollbarPadding().BlockSum();
LayoutUnit block_size = ComputeBlockSizeForFragment(
ConstraintSpace(), Style(), BorderPadding(), intrinsic_block_size,
container_builder_.InitialBorderBoxSize().inline_size);
container_builder_.SetIntrinsicBlockSize(intrinsic_block_size);
container_builder_.SetFragmentsTotalBlockSize(block_size);
container_builder_.SetBaseline(
BorderScrollbarPadding().block_start +
ValueForLength(Style().GetMathBaseline(), LayoutUnit()));
return container_builder_.ToBoxFragment();
}
MinMaxSizesResult NGMathSpaceLayoutAlgorithm::ComputeMinMaxSizes(
const MinMaxSizesInput&) const {
if (auto result = CalculateMinMaxSizesIgnoringChildren(
Node(), BorderScrollbarPadding()))
return *result;
MinMaxSizes sizes;
sizes += BorderScrollbarPadding().InlineSum();
return {sizes, /* depends_on_percentage_block_size */ false};
}
} // namespace blink
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