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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_layout_input_node.h"
#include "third_party/blink/renderer/core/layout/intrinsic_sizing_info.h"
#include "third_party/blink/renderer/core/layout/layout_replaced.h"
#include "third_party/blink/renderer/core/layout/layout_view.h"
#include "third_party/blink/renderer/core/layout/min_max_size.h"
#include "third_party/blink/renderer/core/layout/ng/geometry/ng_logical_size.h"
#include "third_party/blink/renderer/core/layout/ng/inline/ng_inline_node.h"
#include "third_party/blink/renderer/core/layout/ng/ng_block_node.h"
#include "third_party/blink/renderer/core/layout/ng/ng_layout_result.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
namespace blink {
namespace {
#ifndef NDEBUG
void AppendNodeToString(NGLayoutInputNode node,
StringBuilder* string_builder,
unsigned indent = 2) {
if (!node)
return;
DCHECK(string_builder);
string_builder->Append(node.ToString());
string_builder->Append("\n");
StringBuilder indent_builder;
for (unsigned i = 0; i < indent; i++)
indent_builder.Append(" ");
if (node.IsBlock()) {
NGLayoutInputNode first_child = ToNGBlockNode(node).FirstChild();
for (NGLayoutInputNode node_runner = first_child; node_runner;
node_runner = node_runner.NextSibling()) {
string_builder->Append(indent_builder.ToString());
AppendNodeToString(node_runner, string_builder, indent + 2);
}
}
if (node.IsInline()) {
const auto& items = ToNGInlineNode(node).ItemsData(false).items;
for (const NGInlineItem& inline_item : items) {
string_builder->Append(indent_builder.ToString());
string_builder->Append(inline_item.ToString());
string_builder->Append("\n");
}
NGLayoutInputNode next_sibling = ToNGInlineNode(node).NextSibling();
for (NGLayoutInputNode node_runner = next_sibling; node_runner;
node_runner = node_runner.NextSibling()) {
string_builder->Append(indent_builder.ToString());
AppendNodeToString(node_runner, string_builder, indent + 2);
}
}
}
#endif
} // namespace
bool NGLayoutInputNode::IsInline() const {
return type_ == kInline;
}
bool NGLayoutInputNode::IsBlock() const {
return type_ == kBlock;
}
bool NGLayoutInputNode::IsColumnSpanAll() const {
return IsBlock() && box_->IsColumnSpanAll();
}
bool NGLayoutInputNode::IsFloating() const {
return IsBlock() && Style().IsFloating();
}
bool NGLayoutInputNode::IsOutOfFlowPositioned() const {
return IsBlock() && Style().HasOutOfFlowPosition();
}
bool NGLayoutInputNode::IsReplaced() const {
return box_->IsLayoutReplaced();
}
bool NGLayoutInputNode::ShouldBeConsideredAsReplaced() const {
return box_->ShouldBeConsideredAsReplaced();
}
bool NGLayoutInputNode::IsListItem() const {
return IsBlock() && box_->IsLayoutNGListItem();
}
bool NGLayoutInputNode::IsListMarker() const {
return IsBlock() && box_->IsLayoutNGListMarker();
}
bool NGLayoutInputNode::IsAnonymousBlock() const {
return box_->IsAnonymousBlock();
}
bool NGLayoutInputNode::IsQuirkyContainer() const {
return box_->GetDocument().InQuirksMode() &&
(box_->IsBody() || box_->IsTableCell());
}
bool NGLayoutInputNode::IsAbsoluteContainer() const {
return box_->CanContainAbsolutePositionObjects();
}
bool NGLayoutInputNode::IsFixedContainer() const {
return box_->CanContainFixedPositionObjects();
}
bool NGLayoutInputNode::IsBody() const {
return IsBlock() && box_->IsBody();
}
bool NGLayoutInputNode::IsDocumentElement() const {
return box_->IsDocumentElement();
}
bool NGLayoutInputNode::CreatesNewFormattingContext() const {
return IsBlock() && box_->AvoidsFloats();
}
scoped_refptr<NGLayoutResult> NGLayoutInputNode::Layout(
const NGConstraintSpace& space,
NGBreakToken* break_token) {
return IsInline() ? ToNGInlineNode(*this).Layout(space, break_token)
: ToNGBlockNode(*this).Layout(space, break_token);
}
MinMaxSize NGLayoutInputNode::ComputeMinMaxSize(
WritingMode writing_mode,
const MinMaxSizeInput& input,
const NGConstraintSpace* space) {
return IsInline() ? ToNGInlineNode(*this).ComputeMinMaxSize(input)
: ToNGBlockNode(*this).ComputeMinMaxSize(writing_mode,
input, space);
}
void NGLayoutInputNode::IntrinsicSize(
NGLogicalSize* default_intrinsic_size,
base::Optional<LayoutUnit>* computed_inline_size,
base::Optional<LayoutUnit>* computed_block_size,
NGLogicalSize* aspect_ratio) const {
DCHECK(IsReplaced());
LayoutSize box_intrinsic_size = box_->IntrinsicSize();
// Transform to logical coordinates if needed.
if (!Style().IsHorizontalWritingMode())
box_intrinsic_size = box_intrinsic_size.TransposedSize();
*default_intrinsic_size =
NGLogicalSize(box_intrinsic_size.Width(), box_intrinsic_size.Height());
IntrinsicSizingInfo legacy_sizing_info;
ToLayoutReplaced(box_)->ComputeIntrinsicSizingInfo(legacy_sizing_info);
if (legacy_sizing_info.has_width)
*computed_inline_size = LayoutUnit(legacy_sizing_info.size.Width());
if (legacy_sizing_info.has_height)
*computed_block_size = LayoutUnit(legacy_sizing_info.size.Height());
*aspect_ratio =
NGLogicalSize(LayoutUnit(legacy_sizing_info.aspect_ratio.Width()),
LayoutUnit(legacy_sizing_info.aspect_ratio.Height()));
}
NGLayoutInputNode NGLayoutInputNode::NextSibling() {
return IsInline() ? ToNGInlineNode(*this).NextSibling()
: ToNGBlockNode(*this).NextSibling();
}
Document& NGLayoutInputNode::GetDocument() const {
return box_->GetDocument();
}
NGPhysicalSize NGLayoutInputNode::InitialContainingBlockSize() const {
IntSize icb_size =
GetDocument().GetLayoutView()->GetLayoutSize(kExcludeScrollbars);
return NGPhysicalSize{LayoutUnit(icb_size.Width()),
LayoutUnit(icb_size.Height())};
}
const ComputedStyle& NGLayoutInputNode::Style() const {
return box_->StyleRef();
}
bool NGLayoutInputNode::ShouldApplySizeContainment() const {
return box_->ShouldApplySizeContainment();
}
String NGLayoutInputNode::ToString() const {
return IsInline() ? ToNGInlineNode(*this).ToString()
: ToNGBlockNode(*this).ToString();
}
#ifndef NDEBUG
void NGLayoutInputNode::ShowNodeTree() const {
StringBuilder string_builder;
string_builder.Append(".:: LayoutNG Node Tree ::.\n");
AppendNodeToString(*this, &string_builder);
fprintf(stderr, "%s\n", string_builder.ToString().Utf8().data());
}
#endif
} // namespace blink
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