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