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      1 /*
      2  * Copyright (C) 2007 Nicholas Shanks <contact (at) nickshanks.com>
      3  * Copyright (C) 2008 Apple Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * 1.  Redistributions of source code must retain the above copyright
     10  *     notice, this list of conditions and the following disclaimer.
     11  * 2.  Redistributions in binary form must reproduce the above copyright
     12  *     notice, this list of conditions and the following disclaimer in the
     13  *     documentation and/or other materials provided with the distribution.
     14  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     15  *     its contributors may be used to endorse or promote products derived
     16  *     from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include "config.h"
     31 #include "FontDescription.h"
     32 
     33 namespace WebCore {
     34 
     35 FontWeight FontDescription::lighterWeight(void) const
     36 {
     37     // FIXME: Should actually return the CSS weight corresponding to next lightest
     38     // weight of the currently used font family.
     39     switch (m_weight) {
     40         case FontWeight100:
     41         case FontWeight200:
     42             return FontWeight100;
     43 
     44         case FontWeight300:
     45             return FontWeight200;
     46 
     47         case FontWeight400:
     48         case FontWeight500:
     49             return FontWeight300;
     50 
     51         case FontWeight600:
     52         case FontWeight700:
     53             return FontWeight400;
     54 
     55         case FontWeight800:
     56             return FontWeight500;
     57 
     58         case FontWeight900:
     59             return FontWeight700;
     60     }
     61     ASSERT_NOT_REACHED();
     62     return FontWeightNormal;
     63 }
     64 
     65 FontWeight FontDescription::bolderWeight(void) const
     66 {
     67     // FIXME: Should actually return the CSS weight corresponding to next heaviest
     68     // weight of the currently used font family.
     69     switch (m_weight) {
     70         case FontWeight100:
     71         case FontWeight200:
     72             return FontWeight300;
     73 
     74         case FontWeight300:
     75             return FontWeight400;
     76 
     77         case FontWeight400:
     78         case FontWeight500:
     79             return FontWeight700;
     80 
     81         case FontWeight600:
     82         case FontWeight700:
     83             return FontWeight800;
     84 
     85         case FontWeight800:
     86         case FontWeight900:
     87             return FontWeight900;
     88     }
     89     ASSERT_NOT_REACHED();
     90     return FontWeightNormal;
     91 }
     92 
     93 FontTraitsMask FontDescription::traitsMask() const
     94 {
     95     return static_cast<FontTraitsMask>((m_italic ? FontStyleItalicMask : FontStyleNormalMask)
     96             | (m_smallCaps ? FontVariantSmallCapsMask : FontVariantNormalMask)
     97             | (FontWeight100Mask << (m_weight - FontWeight100)));
     98 
     99 }
    100 
    101 } // namespace WebCore
    102