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      1 /*
      2  * Copyright (C) 2005, 2006, 2012 Apple Inc. All rights reserved.
      3  * Copyright (C) 2006 Alexey Proskuryakov
      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  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     18  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     20  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     22  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     23  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     24  * THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "core/platform/graphics/SimpleFontData.h"
     29 
     30 #include <ApplicationServices/ApplicationServices.h>
     31 
     32 namespace WebCore {
     33 
     34 CFDictionaryRef SimpleFontData::getCFStringAttributes(TypesettingFeatures typesettingFeatures, FontOrientation orientation) const
     35 {
     36     unsigned key = typesettingFeatures + 1;
     37     HashMap<unsigned, RetainPtr<CFDictionaryRef> >::AddResult addResult = m_CFStringAttributes.add(key, RetainPtr<CFDictionaryRef>());
     38     RetainPtr<CFDictionaryRef>& attributesDictionary = addResult.iterator->value;
     39     if (!addResult.isNewEntry)
     40         return attributesDictionary.get();
     41 
     42     attributesDictionary.adoptCF(CFDictionaryCreateMutable(kCFAllocatorDefault, 4, &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
     43     CFMutableDictionaryRef mutableAttributes = (CFMutableDictionaryRef)attributesDictionary.get();
     44 
     45     CFDictionarySetValue(mutableAttributes, kCTFontAttributeName, platformData().ctFont());
     46 
     47     if (!(typesettingFeatures & Kerning)) {
     48         const float zero = 0;
     49         static CFNumberRef zeroKerningValue = CFNumberCreate(kCFAllocatorDefault, kCFNumberFloatType, &zero);
     50         CFDictionarySetValue(mutableAttributes, kCTKernAttributeName, zeroKerningValue);
     51     }
     52 
     53     bool allowLigatures = (orientation == Horizontal && platformData().allowsLigatures()) || (typesettingFeatures & Ligatures);
     54     if (!allowLigatures) {
     55         const int zero = 0;
     56         static CFNumberRef essentialLigaturesValue = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &zero);
     57         CFDictionarySetValue(mutableAttributes, kCTLigatureAttributeName, essentialLigaturesValue);
     58     }
     59 
     60     if (orientation == Vertical)
     61         CFDictionarySetValue(mutableAttributes, kCTVerticalFormsAttributeName, kCFBooleanTrue);
     62 
     63     return attributesDictionary.get();
     64 }
     65 
     66 } // namespace WebCore
     67