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// Copyright 2018 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_outline_utils.h"
#include "third_party/blink/renderer/core/layout/layout_inline.h"
#include "third_party/blink/renderer/core/layout/ng/inline/ng_inline_cursor.h"
#include "third_party/blink/renderer/core/layout/ng/ng_physical_box_fragment.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
namespace blink {
bool NGOutlineUtils::HasPaintedOutline(const ComputedStyle& style,
const Node* node) {
if (!style.HasOutline() || style.Visibility() != EVisibility::kVisible)
return false;
if (style.OutlineStyleIsAuto() &&
!LayoutTheme::GetTheme().ShouldDrawDefaultFocusRing(node, style))
return false;
return true;
}
bool NGOutlineUtils::ShouldPaintOutline(
const NGPhysicalBoxFragment& physical_fragment) {
if (!physical_fragment.IsInlineBox())
return true;
const LayoutObject* layout_object = physical_fragment.GetLayoutObject();
DCHECK(layout_object);
DCHECK(layout_object->IsLayoutInline());
// A |LayoutInline| can be split across multiple objects. The first fragment
// produced should paint the outline for *all* fragments.
if (layout_object->IsElementContinuation()) {
// If the |LayoutInline|'s continuation-root generated a fragment, we
// shouldn't paint the outline.
DCHECK(layout_object->ContinuationRoot());
NGInlineCursor cursor;
cursor.MoveTo(*layout_object->ContinuationRoot());
if (cursor)
return false;
}
// The first fragment paints all outlines. Check if this is the first fragment
// for the |layout_object|.
NGInlineCursor cursor;
cursor.MoveTo(*layout_object);
DCHECK(cursor);
return cursor.Current().BoxFragment() == &physical_fragment;
}
} // namespace blink
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