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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #ifndef FontSize_h
     23 #define FontSize_h
     24 
     25 namespace WebCore {
     26 
     27 class Document;
     28 
     29 enum ESmartMinimumForFontSize { DoNotUseSmartMinimumForFontSize, UseSmartMinimumForFontFize };
     30 
     31 class FontSize {
     32 private:
     33     FontSize()
     34     {
     35     }
     36 
     37 public:
     38     static float getComputedSizeFromSpecifiedSize(const Document*, float zoomFactor, bool isAbsoluteSize, float specifiedSize, ESmartMinimumForFontSize = UseSmartMinimumForFontFize);
     39 
     40     // Given a CSS keyword in the range (xx-small to -webkit-xxx-large), this function will return
     41     // the correct font size scaled relative to the user's default (medium).
     42     static float fontSizeForKeyword(const Document*, int keyword, bool shouldUseFixedDefaultSize);
     43 
     44     // Given a font size in pixel, this function will return legacy font size between 1 and 7.
     45     static int legacyFontSize(const Document*, int pixelFontSize, bool shouldUseFixedDefaultSize);
     46 };
     47 
     48 } // namespace WebCore
     49 
     50 #endif // FontSize_h
     51