1 /*
2 * Copyright (C) 2005, 2006 Apple Computer, 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 *
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 #import "config.h"
31 #import "SimpleFontData.h"
32
33 #import "Font.h"
34 #import "FontCache.h"
35 #import "FontDescription.h"
36 #import <ApplicationServices/ApplicationServices.h>
37
38 using namespace std;
39
40 namespace WebCore {
41
getCFStringAttributes(TypesettingFeatures typesettingFeatures,FontOrientation orientation) const42 CFDictionaryRef SimpleFontData::getCFStringAttributes(TypesettingFeatures typesettingFeatures, FontOrientation orientation) const
43 {
44 unsigned key = typesettingFeatures + 1;
45 pair<HashMap<unsigned, RetainPtr<CFDictionaryRef> >::iterator, bool> addResult = m_CFStringAttributes.add(key, RetainPtr<CFDictionaryRef>());
46 RetainPtr<CFDictionaryRef>& attributesDictionary = addResult.first->second;
47 if (!addResult.second)
48 return attributesDictionary.get();
49
50 bool treatLineAsVertical = orientation == Vertical;
51
52 bool allowLigatures = (!treatLineAsVertical && platformData().allowsLigatures()) || (typesettingFeatures & Ligatures);
53
54 static const int ligaturesNotAllowedValue = 0;
55 static CFNumberRef ligaturesNotAllowed = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &ligaturesNotAllowedValue);
56
57 static const int ligaturesAllowedValue = 1;
58 static CFNumberRef ligaturesAllowed = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &ligaturesAllowedValue);
59
60 if (!(typesettingFeatures & Kerning)) {
61 static const float kerningAdjustmentValue = 0;
62 static CFNumberRef kerningAdjustment = CFNumberCreate(kCFAllocatorDefault, kCFNumberFloatType, &kerningAdjustmentValue);
63 static const void* keysWithKerningDisabled[] = { kCTFontAttributeName, kCTKernAttributeName, kCTLigatureAttributeName, kCTVerticalFormsAttributeName };
64 const void* valuesWithKerningDisabled[] = { platformData().ctFont(), kerningAdjustment, allowLigatures
65 ? ligaturesAllowed : ligaturesNotAllowed, treatLineAsVertical ? kCFBooleanTrue : kCFBooleanFalse };
66 attributesDictionary.adoptCF(CFDictionaryCreate(0, keysWithKerningDisabled, valuesWithKerningDisabled,
67 WTF_ARRAY_LENGTH(keysWithKerningDisabled), &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
68 } else {
69 // By omitting the kCTKernAttributeName attribute, we get Core Text's standard kerning.
70 static const void* keysWithKerningEnabled[] = { kCTFontAttributeName, kCTLigatureAttributeName, kCTVerticalFormsAttributeName };
71 const void* valuesWithKerningEnabled[] = { platformData().ctFont(), allowLigatures ? ligaturesAllowed : ligaturesNotAllowed, treatLineAsVertical ? kCFBooleanTrue : kCFBooleanFalse };
72 attributesDictionary.adoptCF(CFDictionaryCreate(0, keysWithKerningEnabled, valuesWithKerningEnabled,
73 WTF_ARRAY_LENGTH(keysWithKerningEnabled), &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
74 }
75
76 return attributesDictionary.get();
77 }
78
79 } // namespace WebCore
80