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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
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gfx/2d/NativeFontResourceDWrite.h Normal file
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_gfx_NativeFontResourceDWrite_h
#define mozilla_gfx_NativeFontResourceDWrite_h
#include <dwrite.h>
#include "2D.h"
#include "mozilla/AlreadyAddRefed.h"
namespace mozilla {
namespace gfx {
class NativeFontResourceDWrite final : public NativeFontResource
{
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(NativeFontResourceDWrite)
/**
* Creates a NativeFontResourceDWrite if data is valid. Note aFontData will be
* copied if required and so can be released after calling.
*
* @param aFontData the SFNT data.
* @param aDataLength length of data.
* @param aNeedsCairo whether the ScaledFont created needs a cairo scaled font
* @return Referenced NativeFontResourceDWrite or nullptr if invalid.
*/
static already_AddRefed<NativeFontResourceDWrite>
Create(uint8_t *aFontData, uint32_t aDataLength, bool aNeedsCairo);
already_AddRefed<ScaledFont>
CreateScaledFont(uint32_t aIndex, Float aGlyphSize,
const uint8_t* aInstanceData, uint32_t aInstanceDataLength) final;
private:
NativeFontResourceDWrite(IDWriteFactory *aFactory,
already_AddRefed<IDWriteFontFile> aFontFile,
DWRITE_FONT_FACE_TYPE aFaceType,
uint32_t aNumberOfFaces, bool aNeedsCairo)
: mFactory(aFactory), mFontFile(aFontFile), mFaceType(aFaceType)
, mNumberOfFaces(aNumberOfFaces), mNeedsCairo(aNeedsCairo)
{}
IDWriteFactory *mFactory;
RefPtr<IDWriteFontFile> mFontFile;
DWRITE_FONT_FACE_TYPE mFaceType;
uint32_t mNumberOfFaces;
bool mNeedsCairo;
};
} // gfx
} // mozilla
#endif // mozilla_gfx_NativeFontResourceDWrite_h