mirror of
https://github.com/mozilla/gecko-dev.git
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240 lines
7.8 KiB
C++
240 lines
7.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Foundation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_DWRITECOMMON_H
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#define GFX_DWRITECOMMON_H
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// Mozilla includes
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#include "nscore.h"
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#include "nsIPrefService.h"
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#include "nsIServiceManager.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "cairo-features.h"
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#include "gfxFontConstants.h"
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#include "nsTArray.h"
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#include "gfxWindowsPlatform.h"
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#include "nsIUUIDGenerator.h"
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#include <windows.h>
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#include <dwrite.h>
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static DWRITE_FONT_STRETCH
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DWriteFontStretchFromStretch(PRInt16 aStretch)
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{
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switch (aStretch) {
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case NS_FONT_STRETCH_ULTRA_CONDENSED:
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return DWRITE_FONT_STRETCH_ULTRA_CONDENSED;
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case NS_FONT_STRETCH_EXTRA_CONDENSED:
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return DWRITE_FONT_STRETCH_EXTRA_CONDENSED;
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case NS_FONT_STRETCH_CONDENSED:
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return DWRITE_FONT_STRETCH_CONDENSED;
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case NS_FONT_STRETCH_SEMI_CONDENSED:
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return DWRITE_FONT_STRETCH_SEMI_CONDENSED;
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case NS_FONT_STRETCH_NORMAL:
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return DWRITE_FONT_STRETCH_NORMAL;
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case NS_FONT_STRETCH_SEMI_EXPANDED:
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return DWRITE_FONT_STRETCH_SEMI_EXPANDED;
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case NS_FONT_STRETCH_EXPANDED:
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return DWRITE_FONT_STRETCH_EXPANDED;
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case NS_FONT_STRETCH_EXTRA_EXPANDED:
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return DWRITE_FONT_STRETCH_EXTRA_EXPANDED;
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case NS_FONT_STRETCH_ULTRA_EXPANDED:
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return DWRITE_FONT_STRETCH_ULTRA_EXPANDED;
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default:
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return DWRITE_FONT_STRETCH_UNDEFINED;
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}
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}
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static PRInt16
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FontStretchFromDWriteStretch(DWRITE_FONT_STRETCH aStretch)
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{
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switch (aStretch) {
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case DWRITE_FONT_STRETCH_ULTRA_CONDENSED:
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return NS_FONT_STRETCH_ULTRA_CONDENSED;
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case DWRITE_FONT_STRETCH_EXTRA_CONDENSED:
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return NS_FONT_STRETCH_EXTRA_CONDENSED;
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case DWRITE_FONT_STRETCH_CONDENSED:
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return NS_FONT_STRETCH_CONDENSED;
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case DWRITE_FONT_STRETCH_SEMI_CONDENSED:
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return NS_FONT_STRETCH_SEMI_CONDENSED;
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case DWRITE_FONT_STRETCH_NORMAL:
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return NS_FONT_STRETCH_NORMAL;
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case DWRITE_FONT_STRETCH_SEMI_EXPANDED:
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return NS_FONT_STRETCH_SEMI_EXPANDED;
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case DWRITE_FONT_STRETCH_EXPANDED:
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return NS_FONT_STRETCH_EXPANDED;
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case DWRITE_FONT_STRETCH_EXTRA_EXPANDED:
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return NS_FONT_STRETCH_EXTRA_EXPANDED;
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case DWRITE_FONT_STRETCH_ULTRA_EXPANDED:
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return NS_FONT_STRETCH_ULTRA_EXPANDED;
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default:
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return NS_FONT_STRETCH_NORMAL;
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}
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}
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struct ffReferenceKey
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{
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FallibleTArray<PRUint8> *mArray;
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nsID mGUID;
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};
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class gfxDWriteFontFileLoader : public IDWriteFontFileLoader
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{
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public:
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gfxDWriteFontFileLoader()
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{
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}
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// IUnknown interface
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IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject)
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{
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if (iid == __uuidof(IDWriteFontFileLoader)) {
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*ppObject = static_cast<IDWriteFontFileLoader*>(this);
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return S_OK;
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} else if (iid == __uuidof(IUnknown)) {
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*ppObject = static_cast<IUnknown*>(this);
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return S_OK;
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} else {
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return E_NOINTERFACE;
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}
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}
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IFACEMETHOD_(ULONG, AddRef)()
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{
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return 1;
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}
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IFACEMETHOD_(ULONG, Release)()
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{
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return 1;
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}
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// IDWriteFontFileLoader methods
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/**
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* Important! Note the key here -has- to be a pointer to an
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* FallibleTArray<PRUint8>.
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*/
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virtual HRESULT STDMETHODCALLTYPE
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CreateStreamFromKey(void const* fontFileReferenceKey,
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UINT32 fontFileReferenceKeySize,
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OUT IDWriteFontFileStream** fontFileStream);
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/**
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* Gets the singleton loader instance. Note that when using this font
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* loader, the key must be a pointer to an FallibleTArray<PRUint8>. This
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* array will be empty when the function returns.
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*/
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static IDWriteFontFileLoader* Instance()
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{
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if (!mInstance) {
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mInstance = new gfxDWriteFontFileLoader();
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gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
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RegisterFontFileLoader(mInstance);
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}
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return mInstance;
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}
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private:
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static IDWriteFontFileLoader* mInstance;
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};
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class gfxDWriteFontFileStream : public IDWriteFontFileStream
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{
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public:
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/**
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* Used by the FontFileLoader to create a new font stream,
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* this font stream is created from data in memory. The memory
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* passed may be released after object creation, it will be
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* copied internally.
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*
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* @param aData Font data
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*/
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gfxDWriteFontFileStream(FallibleTArray<PRUint8> *aData);
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~gfxDWriteFontFileStream();
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// IUnknown interface
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IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject)
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{
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if (iid == __uuidof(IDWriteFontFileStream)) {
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*ppObject = static_cast<IDWriteFontFileStream*>(this);
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return S_OK;
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} else if (iid == __uuidof(IUnknown)) {
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*ppObject = static_cast<IUnknown*>(this);
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return S_OK;
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} else {
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return E_NOINTERFACE;
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}
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}
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IFACEMETHOD_(ULONG, AddRef)()
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{
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NS_PRECONDITION(PRInt32(mRefCnt) >= 0, "illegal refcnt");
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++mRefCnt;
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return mRefCnt;
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}
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IFACEMETHOD_(ULONG, Release)()
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{
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NS_PRECONDITION(0 != mRefCnt, "dup release");
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--mRefCnt;
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if (mRefCnt == 0) {
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delete this;
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return 0;
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}
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return mRefCnt;
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}
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// IDWriteFontFileStream methods
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virtual HRESULT STDMETHODCALLTYPE ReadFileFragment(void const** fragmentStart,
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UINT64 fileOffset,
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UINT64 fragmentSize,
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OUT void** fragmentContext);
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virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
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virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize);
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virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime);
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private:
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FallibleTArray<PRUint8> mData;
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nsAutoRefCnt mRefCnt;
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};
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#endif /* GFX_DWRITECOMMON_H */
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