1/* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21#ifndef RenderBR_h 22#define RenderBR_h 23 24#include "core/rendering/RenderText.h" 25 26/* 27 * The whole class here is a hack to get <br> working, as long as we don't have support for 28 * CSS2 :before and :after pseudo elements 29 */ 30namespace WebCore { 31 32class Position; 33 34class RenderBR FINAL : public RenderText { 35public: 36 explicit RenderBR(Node*); 37 virtual ~RenderBR(); 38 39 virtual const char* renderName() const { return "RenderBR"; } 40 41 virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* /*repaintContainer*/, bool /*clipToVisibleContent*/) OVERRIDE { return LayoutRect(); } 42 43 virtual float width(unsigned /*from*/, unsigned /*len*/, const Font&, float /*xPos*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/ , GlyphOverflow* = 0) const { return 0; } 44 virtual float width(unsigned /*from*/, unsigned /*len*/, float /*xpos*/, bool = false /*firstLine*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/, GlyphOverflow* = 0) const { return 0; } 45 46 int lineHeight(bool firstLine) const; 47 48 // overrides 49 virtual bool isBR() const { return true; } 50 51 virtual int caretMinOffset() const; 52 virtual int caretMaxOffset() const; 53 54 virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE FINAL; 55 56protected: 57 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 58 59private: 60 mutable int m_lineHeight; 61}; 62 63DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBR, isBR()); 64 65} // namespace WebCore 66 67#endif // RenderBR_h 68