gecko/gfx/thebes/gfxCoreTextShaper.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2012-05-21 04:12:37 -07:00
* 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 "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFontUtils.h"
#include "gfxPlatform.h"
#include "gfxMacPlatformFontList.h"
#include <Carbon/Carbon.h>
class gfxMacFont;
class gfxCoreTextShaper : public gfxFontShaper {
public:
gfxCoreTextShaper(gfxMacFont *aFont);
virtual ~gfxCoreTextShaper();
virtual bool ShapeText(gfxContext *aContext,
const PRUnichar *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText);
// clean up static objects that may have been cached
static void Shutdown();
protected:
CTFontRef mCTFont;
CFDictionaryRef mAttributesDict;
nsresult SetGlyphsFromRun(gfxShapedText *aShapedText,
uint32_t aOffset,
uint32_t aLength,
CTRunRef aCTRun,
int32_t aStringOffset);
CTFontRef CreateCTFontWithDisabledLigatures(CGFloat aSize);
static void CreateDefaultFeaturesDescriptor();
static CTFontDescriptorRef GetDefaultFeaturesDescriptor() {
if (sDefaultFeaturesDescriptor == NULL) {
CreateDefaultFeaturesDescriptor();
}
return sDefaultFeaturesDescriptor;
}
// 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;
};
#endif /* GFX_CORETEXTSHAPER_H */