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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();

  bool ShapeText(DrawTarget *aDrawTarget, const char16_t *aText,
                 uint32_t aOffset, uint32_t aLength, Script aScript,
                 bool aVertical, RoundingFlags aRounding,
                 gfxShapedText *aShapedText) override;

  // 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);

  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 GetSmallCapsDescriptor();
  static CTFontDescriptorRef GetDisableLigaturesDescriptor();
  static CTFontDescriptorRef GetSmallCapDisableLigDescriptor();
  static CTFontDescriptorRef GetIndicFeaturesDescriptor();
  static CTFontDescriptorRef GetIndicDisableLigaturesDescriptor();

  // cached font descriptor, created the first time it's needed
  static CTFontDescriptorRef sDefaultFeaturesDescriptor;
  static CTFontDescriptorRef sSmallCapsDescriptor;

  // cached descriptor for adding disable-ligatures setting to a font
  static CTFontDescriptorRef sDisableLigaturesDescriptor;
  static CTFontDescriptorRef sSmallCapDisableLigDescriptor;

  // feature descriptors for buggy Indic AAT font workaround
  static CTFontDescriptorRef sIndicFeaturesDescriptor;
  static CTFontDescriptorRef sIndicDisableLigaturesDescriptor;
};

#endif /* GFX_CORETEXTSHAPER_H */