| /* |
| * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
| * |
| * 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 LayoutBR_h |
| #define LayoutBR_h |
| |
| #include "core/layout/LayoutText.h" |
| |
| /* |
| * The whole class here is a hack to get <br> working, as long as we don't have support for |
| * CSS2 :before and :after pseudo elements |
| */ |
| namespace blink { |
| |
| class LayoutBR final : public LayoutText { |
| public: |
| explicit LayoutBR(Node*); |
| ~LayoutBR() override; |
| |
| const char* name() const override { return "LayoutBR"; } |
| |
| // Although line breaks contain no actual text, if we're selected we need |
| // to return a rect that includes space to illustrate a newline. |
| using LayoutText::localSelectionRect; |
| |
| float width(unsigned /* from */, |
| unsigned /* len */, |
| const Font&, |
| LayoutUnit /* xpos */, |
| TextDirection, |
| HashSet<const SimpleFontData*>* = nullptr /* fallbackFonts */, |
| FloatRect* /* glyphBounds */ = nullptr) const override { |
| return 0; |
| } |
| float width(unsigned /* from */, |
| unsigned /* len */, |
| LayoutUnit /* xpos */, |
| TextDirection, |
| bool = false /* firstLine */, |
| HashSet<const SimpleFontData*>* = nullptr /* fallbackFonts */, |
| FloatRect* /* glyphBounds */ = nullptr) const override { |
| return 0; |
| } |
| |
| int lineHeight(bool firstLine) const; |
| |
| bool isOfType(LayoutObjectType type) const override { |
| return type == LayoutObjectBr || LayoutText::isOfType(type); |
| } |
| |
| int caretMinOffset() const override; |
| int caretMaxOffset() const override; |
| |
| PositionWithAffinity positionForPoint(const LayoutPoint&) final; |
| |
| protected: |
| void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override; |
| }; |
| |
| DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBR, isBR()); |
| |
| } // namespace blink |
| |
| #endif // LayoutBR_h |