| /* |
| * 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; |
| |
| // Used to layout the list item's marker. |
| // The LayoutListMarker always has to be a child of a LayoutListItem. |
| class CORE_EXPORT LayoutListMarker final : public LayoutBox { |
| public: |
| static LayoutListMarker* CreateAnonymous(LayoutListItem*); |
| ~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 }; |
| |
| // Returns the list's style as one of a reduced high level categorical set of |
| // styles. |
| ListStyleCategory GetListStyleCategory() const; |
| static ListStyleCategory GetListStyleCategory(EListStyleType); |
| |
| bool IsInside() const; |
| |
| 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 { return list_item_; } |
| LayoutSize ImageBulletSize() const; |
| |
| void ListItemStyleDidChange(); |
| |
| const char* GetName() const override { return "LayoutListMarker"; } |
| |
| LayoutUnit LineOffset() const { return line_offset_; } |
| |
| protected: |
| void WillBeDestroyed() override; |
| |
| private: |
| LayoutListMarker(LayoutListItem*); |
| |
| void ComputePreferredLogicalWidths() override; |
| |
| bool IsOfType(LayoutObjectType type) const override { |
| return type == kLayoutObjectListMarker || LayoutBox::IsOfType(type); |
| } |
| |
| 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 GetWidthOfTextWithSuffix() const; |
| void UpdateMargins(); |
| void UpdateContent(); |
| |
| void StyleWillChange(StyleDifference, |
| const ComputedStyle& new_style) override; |
| void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override; |
| bool AnonymousHasStylePropagationOverride() override { return true; } |
| |
| bool PaintedOutputOfObjectHasNoEffectRegardlessOfSize() const override { |
| return false; |
| } |
| |
| String text_; |
| Persistent<StyleImage> image_; |
| LayoutListItem* list_item_; |
| LayoutUnit line_offset_; |
| }; |
| |
| DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutListMarker, IsListMarker()); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_MARKER_H_ |