1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved. 4 * Copyright (C) 2010 Google Inc. All rights reserved. 5 * Copyright (C) 2013 Adobe Systems Incorporated. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 #ifndef LineInfo_h 25 #define LineInfo_h 26 27 #include "core/rendering/line/LineWidth.h" 28 29 namespace blink { 30 31 class LineInfo { 32 public: 33 LineInfo() 34 : m_isFirstLine(true) 35 , m_isLastLine(false) 36 , m_isEmpty(true) 37 , m_previousLineBrokeCleanly(true) 38 , m_floatPaginationStrut(0) 39 , m_runsFromLeadingWhitespace(0) 40 { } 41 42 bool isFirstLine() const { return m_isFirstLine; } 43 bool isLastLine() const { return m_isLastLine; } 44 bool isEmpty() const { return m_isEmpty; } 45 bool previousLineBrokeCleanly() const { return m_previousLineBrokeCleanly; } 46 LayoutUnit floatPaginationStrut() const { return m_floatPaginationStrut; } 47 unsigned runsFromLeadingWhitespace() const { return m_runsFromLeadingWhitespace; } 48 void resetRunsFromLeadingWhitespace() { m_runsFromLeadingWhitespace = 0; } 49 void incrementRunsFromLeadingWhitespace() { m_runsFromLeadingWhitespace++; } 50 51 void setFirstLine(bool firstLine) { m_isFirstLine = firstLine; } 52 void setLastLine(bool lastLine) { m_isLastLine = lastLine; } 53 void setEmpty(bool empty, RenderBlock* block = 0, LineWidth* lineWidth = 0) 54 { 55 if (m_isEmpty == empty) 56 return; 57 m_isEmpty = empty; 58 if (!empty && block && floatPaginationStrut()) { 59 block->setLogicalHeight(block->logicalHeight() + floatPaginationStrut()); 60 setFloatPaginationStrut(0); 61 lineWidth->updateAvailableWidth(); 62 } 63 } 64 65 void setPreviousLineBrokeCleanly(bool previousLineBrokeCleanly) { m_previousLineBrokeCleanly = previousLineBrokeCleanly; } 66 void setFloatPaginationStrut(LayoutUnit strut) { m_floatPaginationStrut = strut; } 67 68 private: 69 bool m_isFirstLine; 70 bool m_isLastLine; 71 bool m_isEmpty; 72 bool m_previousLineBrokeCleanly; 73 LayoutUnit m_floatPaginationStrut; 74 unsigned m_runsFromLeadingWhitespace; 75 }; 76 77 } 78 79 #endif // LineInfo_h 80
