gecko-dev/gfx/thebes/gfxDWriteCommon.cpp

104 строки
3.5 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Foundation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bas Schouten <bschouten@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "gfxDWriteCommon.h"
IDWriteFontFileLoader* gfxDWriteFontFileLoader::mInstance = NULL;
HRESULT STDMETHODCALLTYPE
gfxDWriteFontFileLoader::CreateStreamFromKey(const void *fontFileReferenceKey,
UINT32 fontFileReferenceKeySize,
IDWriteFontFileStream **fontFileStream)
{
if (!fontFileReferenceKey || !fontFileStream) {
return E_POINTER;
}
*fontFileStream =
new gfxDWriteFontFileStream(
static_cast<const ffReferenceKey*>(fontFileReferenceKey)->mArray);
if (!*fontFileStream) {
return E_OUTOFMEMORY;
}
(*fontFileStream)->AddRef();
return S_OK;
}
gfxDWriteFontFileStream::gfxDWriteFontFileStream(FallibleTArray<PRUint8> *aData)
{
mData.SwapElements(*aData);
}
gfxDWriteFontFileStream::~gfxDWriteFontFileStream()
{
}
HRESULT STDMETHODCALLTYPE
gfxDWriteFontFileStream::GetFileSize(UINT64 *fileSize)
{
*fileSize = mData.Length();
return S_OK;
}
HRESULT STDMETHODCALLTYPE
gfxDWriteFontFileStream::GetLastWriteTime(UINT64 *lastWriteTime)
{
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
gfxDWriteFontFileStream::ReadFileFragment(const void **fragmentStart,
UINT64 fileOffset,
UINT64 fragmentSize,
void **fragmentContext)
{
// We are required to do bounds checking.
if (fileOffset + fragmentSize > (UINT64)mData.Length()) {
return E_FAIL;
}
// We should be alive for the duration of this.
*fragmentStart = &mData[fileOffset];
*fragmentContext = NULL;
return S_OK;
}
void STDMETHODCALLTYPE
gfxDWriteFontFileStream::ReleaseFileFragment(void *fragmentContext)
{
}