mirror of
https://github.com/classilla/tenfourfox.git
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207 lines
6.3 KiB
C++
207 lines
6.3 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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#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 "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 inline DWRITE_FONT_STRETCH
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DWriteFontStretchFromStretch(int16_t 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 inline int16_t
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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<uint8_t> *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<uint8_t>.
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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<uint8_t>. 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 final : 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<uint8_t> *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(int32_t(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<uint8_t> mData;
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nsAutoRefCnt mRefCnt;
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};
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#endif /* GFX_DWRITECOMMON_H */
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