michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GFX_CORETEXTSHAPER_H
michael@0: #define GFX_CORETEXTSHAPER_H
michael@0: 
michael@0: #include "gfxFont.h"
michael@0: 
michael@0: #include <ApplicationServices/ApplicationServices.h>
michael@0: 
michael@0: class gfxMacFont;
michael@0: 
michael@0: class gfxCoreTextShaper : public gfxFontShaper {
michael@0: public:
michael@0:     gfxCoreTextShaper(gfxMacFont *aFont);
michael@0: 
michael@0:     virtual ~gfxCoreTextShaper();
michael@0: 
michael@0:     virtual bool ShapeText(gfxContext      *aContext,
michael@0:                            const char16_t *aText,
michael@0:                            uint32_t         aOffset,
michael@0:                            uint32_t         aLength,
michael@0:                            int32_t          aScript,
michael@0:                            gfxShapedText   *aShapedText);
michael@0: 
michael@0:     // clean up static objects that may have been cached
michael@0:     static void Shutdown();
michael@0: 
michael@0: protected:
michael@0:     CTFontRef mCTFont;
michael@0:     CFDictionaryRef mAttributesDict;
michael@0: 
michael@0:     nsresult SetGlyphsFromRun(gfxShapedText *aShapedText,
michael@0:                               uint32_t       aOffset,
michael@0:                               uint32_t       aLength,
michael@0:                               CTRunRef       aCTRun,
michael@0:                               int32_t        aStringOffset);
michael@0: 
michael@0:     CTFontRef CreateCTFontWithDisabledLigatures(CGFloat aSize);
michael@0: 
michael@0:     static void CreateDefaultFeaturesDescriptor();
michael@0: 
michael@0:     static CTFontDescriptorRef GetDefaultFeaturesDescriptor() {
michael@0:         if (sDefaultFeaturesDescriptor == nullptr) {
michael@0:             CreateDefaultFeaturesDescriptor();
michael@0:         }
michael@0:         return sDefaultFeaturesDescriptor;
michael@0:     }
michael@0: 
michael@0:     // cached font descriptor, created the first time it's needed
michael@0:     static CTFontDescriptorRef    sDefaultFeaturesDescriptor;
michael@0: 
michael@0:     // cached descriptor for adding disable-ligatures setting to a font
michael@0:     static CTFontDescriptorRef    sDisableLigaturesDescriptor;
michael@0: };
michael@0: 
michael@0: #endif /* GFX_CORETEXTSHAPER_H */