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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Apple Inc.
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_MARKER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_MARKER_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/layout_box.h"
namespace blink {
class LayoutListItem;
// This class holds code shared among legacy classes for list markers.
class CORE_EXPORT LayoutListMarker : public LayoutBox {
public:
explicit LayoutListMarker(Element*);
~LayoutListMarker() override;
// Marker text without suffix, e.g. "1".
const String& GetText() const { return text_; }
// Marker text with suffix, e.g. "1. ", for use in accessibility.
String TextAlternative() const;
// A reduced set of list style categories allowing for more concise expression
// of list style specific logic.
enum class ListStyleCategory { kNone, kSymbol, kLanguage, kStaticString };
// Returns the list's style as one of a reduced high level categorical set of
// styles.
ListStyleCategory GetListStyleCategory() const;
static ListStyleCategory GetListStyleCategory(EListStyleType);
void UpdateMarginsAndContent();
// Compute inline margins for 'list-style-position: inside' and 'outside'.
static std::pair<LayoutUnit, LayoutUnit> InlineMarginsForInside(
const ComputedStyle&,
bool is_image);
static std::pair<LayoutUnit, LayoutUnit> InlineMarginsForOutside(
const ComputedStyle&,
bool is_image,
LayoutUnit marker_inline_size);
LayoutRect GetRelativeMarkerRect() const;
static LayoutRect RelativeSymbolMarkerRect(const ComputedStyle&, LayoutUnit);
static LayoutUnit WidthOfSymbol(const ComputedStyle&);
bool IsImage() const override;
const StyleImage* GetImage() const { return image_.Get(); }
const LayoutListItem* ListItem() const;
LayoutSize ImageBulletSize() const;
LayoutUnit LineOffset() const { return line_offset_; }
protected:
void WillBeDestroyed() override;
private:
MinMaxSizes ComputeIntrinsicLogicalWidths() const override;
MinMaxSizes PreferredLogicalWidths() const override;
void Paint(const PaintInfo&) const override;
void UpdateLayout() override;
void ImageChanged(WrappedImagePtr, CanDeferInvalidation) override;
InlineBox* CreateInlineBox() override;
LayoutUnit LineHeight(
bool first_line,
LineDirectionMode,
LinePositionMode = kPositionOnContainingLine) const override;
LayoutUnit BaselinePosition(
FontBaseline,
bool first_line,
LineDirectionMode,
LinePositionMode = kPositionOnContainingLine) const override;
bool IsText() const { return !IsImage(); }
LayoutUnit GetWidthOfText(ListStyleCategory) const;
void UpdateMargins(LayoutUnit marker_inline_size);
void UpdateContent();
void StyleWillChange(StyleDifference,
const ComputedStyle& new_style) override;
void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;
String text_;
Persistent<StyleImage> image_;
LayoutUnit line_offset_;
};
DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutListMarker, IsListMarker());
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_MARKER_H_
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