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72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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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#include "gfxDWriteCommon.h"
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IDWriteFontFileLoader* gfxDWriteFontFileLoader::mInstance = nullptr;
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HRESULT STDMETHODCALLTYPE
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gfxDWriteFontFileLoader::CreateStreamFromKey(const void *fontFileReferenceKey,
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UINT32 fontFileReferenceKeySize,
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IDWriteFontFileStream **fontFileStream)
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{
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if (!fontFileReferenceKey || !fontFileStream) {
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return E_POINTER;
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}
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*fontFileStream =
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new gfxDWriteFontFileStream(
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static_cast<const ffReferenceKey*>(fontFileReferenceKey)->mArray);
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if (!*fontFileStream) {
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return E_OUTOFMEMORY;
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}
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(*fontFileStream)->AddRef();
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return S_OK;
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}
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gfxDWriteFontFileStream::gfxDWriteFontFileStream(FallibleTArray<uint8_t> *aData)
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{
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mData.SwapElements(*aData);
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}
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gfxDWriteFontFileStream::~gfxDWriteFontFileStream()
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{
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}
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HRESULT STDMETHODCALLTYPE
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gfxDWriteFontFileStream::GetFileSize(UINT64 *fileSize)
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{
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*fileSize = mData.Length();
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE
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gfxDWriteFontFileStream::GetLastWriteTime(UINT64 *lastWriteTime)
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{
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE
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gfxDWriteFontFileStream::ReadFileFragment(const void **fragmentStart,
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UINT64 fileOffset,
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UINT64 fragmentSize,
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void **fragmentContext)
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{
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// We are required to do bounds checking.
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if (fileOffset + fragmentSize > (UINT64)mData.Length()) {
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return E_FAIL;
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}
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// We should be alive for the duration of this.
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*fragmentStart = &mData[fileOffset];
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*fragmentContext = nullptr;
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return S_OK;
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}
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void STDMETHODCALLTYPE
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gfxDWriteFontFileStream::ReleaseFileFragment(void *fragmentContext)
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{
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}
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