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      1 /*
      2  * Copyright (C) 2012 Google Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/rendering/RenderThemeChromiumFontProvider.h"
     28 
     29 #include "CSSValueKeywords.h"
     30 #include "core/platform/graphics/FontDescription.h"
     31 
     32 #include "wtf/StdLibExtras.h"
     33 #include "wtf/text/WTFString.h"
     34 
     35 namespace WebCore {
     36 
     37 // static
     38 void RenderThemeChromiumFontProvider::setDefaultFontSize(int fontSize)
     39 {
     40     s_defaultFontSize = static_cast<float>(fontSize);
     41 }
     42 
     43 // static
     44 void RenderThemeChromiumFontProvider::systemFont(CSSValueID valueID, FontDescription& fontDescription)
     45 {
     46     float fontSize = s_defaultFontSize;
     47 
     48     switch (valueID) {
     49     case CSSValueWebkitMiniControl:
     50     case CSSValueWebkitSmallControl:
     51     case CSSValueWebkitControl:
     52         // Why 2 points smaller? Because that's what Gecko does. Note that we
     53         // are assuming a 96dpi screen, which is the default that we use on
     54         // Windows.
     55         static const float pointsPerInch = 72.0f;
     56         static const float pixelsPerInch = 96.0f;
     57         fontSize -= (2.0f / pointsPerInch) * pixelsPerInch;
     58         break;
     59     default:
     60         break;
     61     }
     62 
     63     fontDescription.firstFamily().setFamily(defaultGUIFont());
     64     fontDescription.setSpecifiedSize(fontSize);
     65     fontDescription.setIsAbsoluteSize(true);
     66     fontDescription.setGenericFamily(FontDescription::NoFamily);
     67     fontDescription.setWeight(FontWeightNormal);
     68     fontDescription.setItalic(false);
     69 }
     70 
     71 } // namespace WebCore
     72