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// Copyright 2017 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/ng_base_layout_algorithm_test.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/layout/ng/layout_ng_block_flow.h"
#include "third_party/blink/renderer/core/layout/ng/ng_block_layout_algorithm.h"
#include "third_party/blink/renderer/core/layout/ng/ng_constraint_space_builder.h"
#include "third_party/blink/renderer/core/layout/ng/ng_fieldset_layout_algorithm.h"
#include "third_party/blink/renderer/core/layout/ng/ng_layout_result.h"
#include "third_party/blink/renderer/core/layout/ng/ng_length_utils.h"
#include "third_party/blink/renderer/core/layout/ng/ng_physical_box_fragment.h"
#include "third_party/blink/renderer/core/layout/ng/ng_physical_fragment.h"
namespace blink {
void NGBaseLayoutAlgorithmTest::SetUp() {
EnableCompositing();
NGLayoutTest::SetUp();
}
void NGBaseLayoutAlgorithmTest::AdvanceToLayoutPhase() {
if (GetDocument().Lifecycle().GetState() ==
DocumentLifecycle::kInPerformLayout)
return;
GetDocument().Lifecycle().AdvanceTo(DocumentLifecycle::kInStyleRecalc);
GetDocument().Lifecycle().AdvanceTo(DocumentLifecycle::kStyleClean);
GetDocument().Lifecycle().AdvanceTo(DocumentLifecycle::kInPerformLayout);
}
scoped_refptr<const NGPhysicalBoxFragment>
NGBaseLayoutAlgorithmTest::RunBlockLayoutAlgorithm(
NGBlockNode node,
const NGConstraintSpace& space,
const NGBreakToken* break_token) {
NGFragmentGeometry fragment_geometry =
CalculateInitialFragmentGeometry(space, node);
scoped_refptr<const NGLayoutResult> result =
NGBlockLayoutAlgorithm(
{node, fragment_geometry, space, To<NGBlockBreakToken>(break_token)})
.Layout();
return To<NGPhysicalBoxFragment>(&result->PhysicalFragment());
}
std::pair<scoped_refptr<const NGPhysicalBoxFragment>, NGConstraintSpace>
NGBaseLayoutAlgorithmTest::RunBlockLayoutAlgorithmForElement(Element* element) {
auto* block_flow = To<LayoutBlockFlow>(element->GetLayoutObject());
NGBlockNode node(block_flow);
NGConstraintSpace space =
NGConstraintSpace::CreateFromLayoutObject(*block_flow);
NGFragmentGeometry fragment_geometry =
CalculateInitialFragmentGeometry(space, node);
scoped_refptr<const NGLayoutResult> result =
NGBlockLayoutAlgorithm({node, fragment_geometry, space}).Layout();
return std::make_pair(To<NGPhysicalBoxFragment>(&result->PhysicalFragment()),
std::move(space));
}
scoped_refptr<const NGPhysicalBoxFragment>
NGBaseLayoutAlgorithmTest::RunFieldsetLayoutAlgorithm(
NGBlockNode node,
const NGConstraintSpace& space,
const NGBreakToken* break_token) {
NGFragmentGeometry fragment_geometry =
CalculateInitialFragmentGeometry(space, node);
scoped_refptr<const NGLayoutResult> result =
NGFieldsetLayoutAlgorithm(
{node, fragment_geometry, space, To<NGBlockBreakToken>(break_token)})
.Layout();
return To<NGPhysicalBoxFragment>(&result->PhysicalFragment());
}
scoped_refptr<const NGPhysicalBoxFragment>
NGBaseLayoutAlgorithmTest::GetBoxFragmentByElementId(const char* id) {
LayoutObject* layout_object = GetLayoutObjectByElementId(id);
CHECK(layout_object && layout_object->IsLayoutNGMixin());
scoped_refptr<const NGPhysicalBoxFragment> fragment =
To<LayoutBlockFlow>(layout_object)->GetPhysicalFragment(0);
CHECK(fragment);
return fragment;
}
const NGPhysicalBoxFragment* NGBaseLayoutAlgorithmTest::CurrentFragmentFor(
const LayoutNGBlockFlow* block_flow) {
return block_flow->GetPhysicalFragment(0);
}
const NGPhysicalBoxFragment* FragmentChildIterator::NextChild(
PhysicalOffset* fragment_offset) {
if (!parent_)
return nullptr;
if (index_ >= parent_->Children().size())
return nullptr;
while (parent_->Children()[index_]->Type() !=
NGPhysicalFragment::kFragmentBox) {
++index_;
if (index_ >= parent_->Children().size())
return nullptr;
}
auto& child = parent_->Children()[index_++];
if (fragment_offset)
*fragment_offset = child.Offset();
return To<NGPhysicalBoxFragment>(child.get());
}
NGConstraintSpace ConstructBlockLayoutTestConstraintSpace(
WritingDirectionMode writing_direction,
LogicalSize size,
bool stretch_inline_size_if_auto,
bool is_new_formatting_context,
LayoutUnit fragmentainer_space_available) {
NGFragmentationType block_fragmentation =
fragmentainer_space_available != kIndefiniteSize
? NGFragmentationType::kFragmentColumn
: NGFragmentationType::kFragmentNone;
NGConstraintSpaceBuilder builder(writing_direction.GetWritingMode(),
writing_direction,
is_new_formatting_context);
builder.SetAvailableSize(size);
builder.SetPercentageResolutionSize(size);
builder.SetStretchInlineSizeIfAuto(stretch_inline_size_if_auto);
builder.SetFragmentainerBlockSize(fragmentainer_space_available);
builder.SetFragmentationType(block_fragmentation);
return builder.ToConstraintSpace();
}
} // namespace blink
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