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1fe62dee68
We create and destroy ScaledFonts for every piece of text we write. That causes a huge amount of duplicated data within the recording. This splits out the recording of the font data itself from the ScaledFont. The key generated to determine uniqueness could probably be fairly easily faked, but for our purposes that doesn't matter.
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_gfx_NativeFontResourceDWrite_h
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#define mozilla_gfx_NativeFontResourceDWrite_h
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#include <dwrite.h>
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#include "2D.h"
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#include "mozilla/AlreadyAddRefed.h"
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namespace mozilla {
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namespace gfx {
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class NativeFontResourceDWrite final : public NativeFontResource
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{
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(NativeFontResourceDWrite)
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/**
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* Creates a NativeFontResourceDWrite if data is valid. Note aFontData will be
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* copied if required and so can be released after calling.
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*
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* @param aFontData the SFNT data.
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* @param aDataLength length of data.
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* @param aNeedsCairo whether the ScaledFont created needs a cairo scaled font
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* @return Referenced NativeFontResourceDWrite or nullptr if invalid.
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*/
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static already_AddRefed<NativeFontResourceDWrite>
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Create(uint8_t *aFontData, uint32_t aDataLength, bool aNeedsCairo);
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already_AddRefed<ScaledFont>
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CreateScaledFont(uint32_t aIndex, uint32_t aGlyphSize) final;
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private:
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NativeFontResourceDWrite(IDWriteFactory *aFactory,
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already_AddRefed<IDWriteFontFile> aFontFile,
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DWRITE_FONT_FACE_TYPE aFaceType,
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uint32_t aNumberOfFaces, bool aNeedsCairo)
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: mFactory(aFactory), mFontFile(aFontFile), mFaceType(aFaceType)
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, mNumberOfFaces(aNumberOfFaces), mNeedsCairo(aNeedsCairo)
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{}
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IDWriteFactory *mFactory;
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RefPtr<IDWriteFontFile> mFontFile;
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DWRITE_FONT_FACE_TYPE mFaceType;
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uint32_t mNumberOfFaces;
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bool mNeedsCairo;
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};
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} // gfx
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} // mozilla
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#endif // mozilla_gfx_NativeFontResourceDWrite_h
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