72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_CORETEXTSHAPER_H
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#define GFX_CORETEXTSHAPER_H
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#include "gfxFont.h"
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#include <ApplicationServices/ApplicationServices.h>
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class gfxMacFont;
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class gfxCoreTextShaper : public gfxFontShaper {
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public:
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explicit gfxCoreTextShaper(gfxMacFont *aFont);
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virtual ~gfxCoreTextShaper();
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virtual bool ShapeText(DrawTarget *aDrawTarget,
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const char16_t *aText,
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uint32_t aOffset,
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uint32_t aLength,
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Script aScript,
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bool aVertical,
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gfxShapedText *aShapedText);
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// clean up static objects that may have been cached
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static void Shutdown();
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protected:
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CTFontRef mCTFont;
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// attributes for shaping text with LTR or RTL directionality
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CFDictionaryRef mAttributesDictLTR;
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CFDictionaryRef mAttributesDictRTL;
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nsresult SetGlyphsFromRun(gfxShapedText *aShapedText,
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uint32_t aOffset,
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uint32_t aLength,
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CTRunRef aCTRun,
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int32_t aStringOffset);
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CTFontRef CreateCTFontWithFeatures(CGFloat aSize,
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CTFontDescriptorRef aDescriptor);
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CFDictionaryRef CreateAttrDict(bool aRightToLeft);
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CFDictionaryRef CreateAttrDictWithoutDirection();
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static CTFontDescriptorRef
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CreateFontFeaturesDescriptor(const std::pair<SInt16,SInt16> aFeatures[],
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size_t aCount);
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static CTFontDescriptorRef GetDefaultFeaturesDescriptor();
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static CTFontDescriptorRef GetDisableLigaturesDescriptor();
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static CTFontDescriptorRef GetIndicFeaturesDescriptor();
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static CTFontDescriptorRef GetIndicDisableLigaturesDescriptor();
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// cached font descriptor, created the first time it's needed
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static CTFontDescriptorRef sDefaultFeaturesDescriptor;
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// cached descriptor for adding disable-ligatures setting to a font
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static CTFontDescriptorRef sDisableLigaturesDescriptor;
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// feature descriptors for buggy Indic AAT font workaround
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static CTFontDescriptorRef sIndicFeaturesDescriptor;
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static CTFontDescriptorRef sIndicDisableLigaturesDescriptor;
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};
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#endif /* GFX_CORETEXTSHAPER_H */
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