| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkTypes.h" |
| #undef GetGlyphIndices |
| |
| #include "SkAdvancedTypefaceMetrics.h" |
| #include "SkColorFilter.h" |
| #include "SkDWrite.h" |
| #include "SkDWriteFontFileStream.h" |
| #include "SkDWriteGeometrySink.h" |
| #include "SkDescriptor.h" |
| #include "SkEndian.h" |
| #include "SkFontDescriptor.h" |
| #include "SkFontHost.h" |
| #include "SkFontMgr.h" |
| #include "SkFontStream.h" |
| #include "SkGlyph.h" |
| #include "SkHRESULT.h" |
| #include "SkMaskGamma.h" |
| #include "SkMatrix22.h" |
| #include "SkOnce.h" |
| #include "SkOTTable_EBLC.h" |
| #include "SkOTTable_EBSC.h" |
| #include "SkOTTable_head.h" |
| #include "SkOTTable_hhea.h" |
| #include "SkOTTable_OS_2.h" |
| #include "SkOTTable_post.h" |
| #include "SkPath.h" |
| #include "SkStream.h" |
| #include "SkString.h" |
| #include "SkTScopedComPtr.h" |
| #include "SkThread.h" |
| #include "SkTypeface_win.h" |
| #include "SkTypefaceCache.h" |
| #include "SkUtils.h" |
| |
| #include <dwrite.h> |
| |
| static bool isLCD(const SkScalerContext::Rec& rec) { |
| return SkMask::kLCD16_Format == rec.fMaskFormat || |
| SkMask::kLCD32_Format == rec.fMaskFormat; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class StreamFontFileLoader; |
| |
| class SkFontMgr_DirectWrite : public SkFontMgr { |
| public: |
| /** localeNameLength must include the null terminator. */ |
| SkFontMgr_DirectWrite(IDWriteFactory* factory, IDWriteFontCollection* fontCollection, |
| WCHAR* localeName, int localeNameLength) |
| : fFactory(SkRefComPtr(factory)) |
| , fFontCollection(SkRefComPtr(fontCollection)) |
| , fLocaleName(localeNameLength) |
| { |
| memcpy(fLocaleName.get(), localeName, localeNameLength * sizeof(WCHAR)); |
| } |
| |
| /** Creates a typeface using a typeface cache. */ |
| SkTypeface* createTypefaceFromDWriteFont(IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily) const; |
| |
| protected: |
| virtual int onCountFamilies() const SK_OVERRIDE; |
| virtual void onGetFamilyName(int index, SkString* familyName) const SK_OVERRIDE; |
| virtual SkFontStyleSet* onCreateStyleSet(int index) const SK_OVERRIDE; |
| virtual SkFontStyleSet* onMatchFamily(const char familyName[]) const SK_OVERRIDE; |
| virtual SkTypeface* onMatchFamilyStyle(const char familyName[], |
| const SkFontStyle& fontstyle) const SK_OVERRIDE; |
| virtual SkTypeface* onMatchFaceStyle(const SkTypeface* familyMember, |
| const SkFontStyle& fontstyle) const SK_OVERRIDE; |
| virtual SkTypeface* onCreateFromStream(SkStream* stream, int ttcIndex) const SK_OVERRIDE; |
| virtual SkTypeface* onCreateFromData(SkData* data, int ttcIndex) const SK_OVERRIDE; |
| virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const SK_OVERRIDE; |
| virtual SkTypeface* onLegacyCreateTypeface(const char familyName[], |
| unsigned styleBits) const SK_OVERRIDE; |
| |
| private: |
| HRESULT getByFamilyName(const WCHAR familyName[], IDWriteFontFamily** fontFamily) const; |
| HRESULT getDefaultFontFamily(IDWriteFontFamily** fontFamily) const; |
| |
| void Add(SkTypeface* face, SkTypeface::Style requestedStyle, bool strong) const { |
| SkAutoMutexAcquire ama(fTFCacheMutex); |
| fTFCache.add(face, requestedStyle, strong); |
| } |
| |
| SkTypeface* FindByProcAndRef(SkTypefaceCache::FindProc proc, void* ctx) const { |
| SkAutoMutexAcquire ama(fTFCacheMutex); |
| SkTypeface* typeface = fTFCache.findByProcAndRef(proc, ctx); |
| return typeface; |
| } |
| |
| SkTScopedComPtr<IDWriteFactory> fFactory; |
| SkTScopedComPtr<IDWriteFontCollection> fFontCollection; |
| SkSMallocWCHAR fLocaleName; |
| mutable SkMutex fTFCacheMutex; |
| mutable SkTypefaceCache fTFCache; |
| |
| friend class SkFontStyleSet_DirectWrite; |
| }; |
| |
| class SkFontStyleSet_DirectWrite : public SkFontStyleSet { |
| public: |
| SkFontStyleSet_DirectWrite(const SkFontMgr_DirectWrite* fontMgr, |
| IDWriteFontFamily* fontFamily) |
| : fFontMgr(SkRef(fontMgr)) |
| , fFontFamily(SkRefComPtr(fontFamily)) |
| { } |
| |
| virtual int count() SK_OVERRIDE; |
| virtual void getStyle(int index, SkFontStyle* fs, SkString* styleName) SK_OVERRIDE; |
| virtual SkTypeface* createTypeface(int index) SK_OVERRIDE; |
| virtual SkTypeface* matchStyle(const SkFontStyle& pattern) SK_OVERRIDE; |
| |
| private: |
| SkAutoTUnref<const SkFontMgr_DirectWrite> fFontMgr; |
| SkTScopedComPtr<IDWriteFontFamily> fFontFamily; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class StreamFontFileLoader : public IDWriteFontFileLoader { |
| public: |
| // IUnknown methods |
| virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppvObject); |
| virtual ULONG STDMETHODCALLTYPE AddRef(); |
| virtual ULONG STDMETHODCALLTYPE Release(); |
| |
| // IDWriteFontFileLoader methods |
| virtual HRESULT STDMETHODCALLTYPE CreateStreamFromKey( |
| void const* fontFileReferenceKey, |
| UINT32 fontFileReferenceKeySize, |
| IDWriteFontFileStream** fontFileStream); |
| |
| static HRESULT Create(SkStream* stream, StreamFontFileLoader** streamFontFileLoader) { |
| *streamFontFileLoader = new StreamFontFileLoader(stream); |
| if (NULL == streamFontFileLoader) { |
| return E_OUTOFMEMORY; |
| } |
| return S_OK; |
| } |
| |
| SkAutoTUnref<SkStream> fStream; |
| |
| private: |
| StreamFontFileLoader(SkStream* stream) : fRefCount(1), fStream(SkRef(stream)) { } |
| |
| ULONG fRefCount; |
| }; |
| |
| HRESULT StreamFontFileLoader::QueryInterface(REFIID iid, void** ppvObject) { |
| if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileLoader)) { |
| *ppvObject = this; |
| AddRef(); |
| return S_OK; |
| } else { |
| *ppvObject = NULL; |
| return E_NOINTERFACE; |
| } |
| } |
| |
| ULONG StreamFontFileLoader::AddRef() { |
| return InterlockedIncrement(&fRefCount); |
| } |
| |
| ULONG StreamFontFileLoader::Release() { |
| ULONG newCount = InterlockedDecrement(&fRefCount); |
| if (0 == newCount) { |
| delete this; |
| } |
| return newCount; |
| } |
| |
| HRESULT StreamFontFileLoader::CreateStreamFromKey( |
| void const* fontFileReferenceKey, |
| UINT32 fontFileReferenceKeySize, |
| IDWriteFontFileStream** fontFileStream) |
| { |
| SkTScopedComPtr<SkDWriteFontFileStreamWrapper> stream; |
| HR(SkDWriteFontFileStreamWrapper::Create(fStream, &stream)); |
| *fontFileStream = stream.release(); |
| return S_OK; |
| } |
| |
| class StreamFontFileEnumerator : public IDWriteFontFileEnumerator { |
| public: |
| // IUnknown methods |
| virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppvObject); |
| virtual ULONG STDMETHODCALLTYPE AddRef(); |
| virtual ULONG STDMETHODCALLTYPE Release(); |
| |
| // IDWriteFontFileEnumerator methods |
| virtual HRESULT STDMETHODCALLTYPE MoveNext(BOOL* hasCurrentFile); |
| virtual HRESULT STDMETHODCALLTYPE GetCurrentFontFile(IDWriteFontFile** fontFile); |
| |
| static HRESULT Create(IDWriteFactory* factory, IDWriteFontFileLoader* fontFileLoader, |
| StreamFontFileEnumerator** streamFontFileEnumerator) { |
| *streamFontFileEnumerator = new StreamFontFileEnumerator(factory, fontFileLoader); |
| if (NULL == streamFontFileEnumerator) { |
| return E_OUTOFMEMORY; |
| } |
| return S_OK; |
| } |
| private: |
| StreamFontFileEnumerator(IDWriteFactory* factory, IDWriteFontFileLoader* fontFileLoader); |
| ULONG fRefCount; |
| |
| SkTScopedComPtr<IDWriteFactory> fFactory; |
| SkTScopedComPtr<IDWriteFontFile> fCurrentFile; |
| SkTScopedComPtr<IDWriteFontFileLoader> fFontFileLoader; |
| bool fHasNext; |
| }; |
| |
| StreamFontFileEnumerator::StreamFontFileEnumerator(IDWriteFactory* factory, |
| IDWriteFontFileLoader* fontFileLoader) |
| : fRefCount(1) |
| , fFactory(SkRefComPtr(factory)) |
| , fCurrentFile() |
| , fFontFileLoader(SkRefComPtr(fontFileLoader)) |
| , fHasNext(true) |
| { } |
| |
| HRESULT StreamFontFileEnumerator::QueryInterface(REFIID iid, void** ppvObject) { |
| if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileEnumerator)) { |
| *ppvObject = this; |
| AddRef(); |
| return S_OK; |
| } else { |
| *ppvObject = NULL; |
| return E_NOINTERFACE; |
| } |
| } |
| |
| ULONG StreamFontFileEnumerator::AddRef() { |
| return InterlockedIncrement(&fRefCount); |
| } |
| |
| ULONG StreamFontFileEnumerator::Release() { |
| ULONG newCount = InterlockedDecrement(&fRefCount); |
| if (0 == newCount) { |
| delete this; |
| } |
| return newCount; |
| } |
| |
| HRESULT StreamFontFileEnumerator::MoveNext(BOOL* hasCurrentFile) { |
| *hasCurrentFile = FALSE; |
| |
| if (!fHasNext) { |
| return S_OK; |
| } |
| fHasNext = false; |
| |
| UINT32 dummy = 0; |
| HR(fFactory->CreateCustomFontFileReference( |
| &dummy, //cannot be NULL |
| sizeof(dummy), //even if this is 0 |
| fFontFileLoader.get(), |
| &fCurrentFile)); |
| |
| *hasCurrentFile = TRUE; |
| return S_OK; |
| } |
| |
| HRESULT StreamFontFileEnumerator::GetCurrentFontFile(IDWriteFontFile** fontFile) { |
| if (fCurrentFile.get() == NULL) { |
| *fontFile = NULL; |
| return E_FAIL; |
| } |
| |
| *fontFile = SkRefComPtr(fCurrentFile.get()); |
| return S_OK; |
| } |
| |
| class StreamFontCollectionLoader : public IDWriteFontCollectionLoader { |
| public: |
| // IUnknown methods |
| virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppvObject); |
| virtual ULONG STDMETHODCALLTYPE AddRef(); |
| virtual ULONG STDMETHODCALLTYPE Release(); |
| |
| // IDWriteFontCollectionLoader methods |
| virtual HRESULT STDMETHODCALLTYPE CreateEnumeratorFromKey( |
| IDWriteFactory* factory, |
| void const* collectionKey, |
| UINT32 collectionKeySize, |
| IDWriteFontFileEnumerator** fontFileEnumerator); |
| |
| static HRESULT Create(IDWriteFontFileLoader* fontFileLoader, |
| StreamFontCollectionLoader** streamFontCollectionLoader) { |
| *streamFontCollectionLoader = new StreamFontCollectionLoader(fontFileLoader); |
| if (NULL == streamFontCollectionLoader) { |
| return E_OUTOFMEMORY; |
| } |
| return S_OK; |
| } |
| private: |
| StreamFontCollectionLoader(IDWriteFontFileLoader* fontFileLoader) |
| : fRefCount(1) |
| , fFontFileLoader(SkRefComPtr(fontFileLoader)) |
| { } |
| |
| ULONG fRefCount; |
| SkTScopedComPtr<IDWriteFontFileLoader> fFontFileLoader; |
| }; |
| |
| HRESULT StreamFontCollectionLoader::QueryInterface(REFIID iid, void** ppvObject) { |
| if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontCollectionLoader)) { |
| *ppvObject = this; |
| AddRef(); |
| return S_OK; |
| } else { |
| *ppvObject = NULL; |
| return E_NOINTERFACE; |
| } |
| } |
| |
| ULONG StreamFontCollectionLoader::AddRef() { |
| return InterlockedIncrement(&fRefCount); |
| } |
| |
| ULONG StreamFontCollectionLoader::Release() { |
| ULONG newCount = InterlockedDecrement(&fRefCount); |
| if (0 == newCount) { |
| delete this; |
| } |
| return newCount; |
| } |
| |
| HRESULT StreamFontCollectionLoader::CreateEnumeratorFromKey( |
| IDWriteFactory* factory, |
| void const* collectionKey, |
| UINT32 collectionKeySize, |
| IDWriteFontFileEnumerator** fontFileEnumerator) |
| { |
| SkTScopedComPtr<StreamFontFileEnumerator> enumerator; |
| HR(StreamFontFileEnumerator::Create(factory, fFontFileLoader.get(), &enumerator)); |
| *fontFileEnumerator = enumerator.release(); |
| return S_OK; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static SkTypeface::Style get_style(IDWriteFont* font) { |
| int style = SkTypeface::kNormal; |
| DWRITE_FONT_WEIGHT weight = font->GetWeight(); |
| if (DWRITE_FONT_WEIGHT_DEMI_BOLD <= weight) { |
| style |= SkTypeface::kBold; |
| } |
| DWRITE_FONT_STYLE angle = font->GetStyle(); |
| if (DWRITE_FONT_STYLE_OBLIQUE == angle || DWRITE_FONT_STYLE_ITALIC == angle) { |
| style |= SkTypeface::kItalic; |
| } |
| return static_cast<SkTypeface::Style>(style); |
| } |
| |
| class DWriteFontTypeface : public SkTypeface { |
| private: |
| DWriteFontTypeface(SkTypeface::Style style, SkFontID fontID, |
| IDWriteFactory* factory, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| StreamFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) |
| : SkTypeface(style, fontID, false) |
| , fFactory(SkRefComPtr(factory)) |
| , fDWriteFontCollectionLoader(SkSafeRefComPtr(fontCollectionLoader)) |
| , fDWriteFontFileLoader(SkSafeRefComPtr(fontFileLoader)) |
| , fDWriteFontFamily(SkRefComPtr(fontFamily)) |
| , fDWriteFont(SkRefComPtr(font)) |
| , fDWriteFontFace(SkRefComPtr(fontFace)) |
| { } |
| |
| public: |
| SkTScopedComPtr<IDWriteFactory> fFactory; |
| SkTScopedComPtr<IDWriteFontCollectionLoader> fDWriteFontCollectionLoader; |
| SkTScopedComPtr<StreamFontFileLoader> fDWriteFontFileLoader; |
| SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily; |
| SkTScopedComPtr<IDWriteFont> fDWriteFont; |
| SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace; |
| |
| static DWriteFontTypeface* Create(IDWriteFactory* factory, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| StreamFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) { |
| SkTypeface::Style style = get_style(font); |
| SkFontID fontID = SkTypefaceCache::NewFontID(); |
| return SkNEW_ARGS(DWriteFontTypeface, (style, fontID, |
| factory, fontFace, font, fontFamily, |
| fontFileLoader, fontCollectionLoader)); |
| } |
| |
| protected: |
| virtual void weak_dispose() const SK_OVERRIDE { |
| if (fDWriteFontCollectionLoader.get()) { |
| HRV(fFactory->UnregisterFontCollectionLoader(fDWriteFontCollectionLoader.get())); |
| } |
| if (fDWriteFontFileLoader.get()) { |
| HRV(fFactory->UnregisterFontFileLoader(fDWriteFontFileLoader.get())); |
| } |
| |
| //SkTypefaceCache::Remove(this); |
| INHERITED::weak_dispose(); |
| } |
| |
| virtual SkStream* onOpenStream(int* ttcIndex) const SK_OVERRIDE; |
| virtual SkScalerContext* onCreateScalerContext(const SkDescriptor*) const SK_OVERRIDE; |
| virtual void onFilterRec(SkScalerContextRec*) const SK_OVERRIDE; |
| virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( |
| SkAdvancedTypefaceMetrics::PerGlyphInfo, |
| const uint32_t*, uint32_t) const SK_OVERRIDE; |
| virtual void onGetFontDescriptor(SkFontDescriptor*, bool*) const SK_OVERRIDE; |
| virtual int onCharsToGlyphs(const void* chars, Encoding encoding, |
| uint16_t glyphs[], int glyphCount) const SK_OVERRIDE; |
| virtual int onCountGlyphs() const SK_OVERRIDE; |
| virtual int onGetUPEM() const SK_OVERRIDE; |
| virtual SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const SK_OVERRIDE; |
| virtual int onGetTableTags(SkFontTableTag tags[]) const SK_OVERRIDE; |
| virtual size_t onGetTableData(SkFontTableTag, size_t offset, |
| size_t length, void* data) const SK_OVERRIDE; |
| |
| private: |
| typedef SkTypeface INHERITED; |
| }; |
| |
| class SkScalerContext_DW : public SkScalerContext { |
| public: |
| SkScalerContext_DW(DWriteFontTypeface*, const SkDescriptor* desc); |
| virtual ~SkScalerContext_DW(); |
| |
| protected: |
| virtual unsigned generateGlyphCount() SK_OVERRIDE; |
| virtual uint16_t generateCharToGlyph(SkUnichar uni) SK_OVERRIDE; |
| virtual void generateAdvance(SkGlyph* glyph) SK_OVERRIDE; |
| virtual void generateMetrics(SkGlyph* glyph) SK_OVERRIDE; |
| virtual void generateImage(const SkGlyph& glyph) SK_OVERRIDE; |
| virtual void generatePath(const SkGlyph& glyph, SkPath* path) SK_OVERRIDE; |
| virtual void generateFontMetrics(SkPaint::FontMetrics* mX, |
| SkPaint::FontMetrics* mY) SK_OVERRIDE; |
| |
| private: |
| const void* drawDWMask(const SkGlyph& glyph); |
| |
| SkTDArray<uint8_t> fBits; |
| /** The total matrix without the text height scale. */ |
| SkMatrix fSkXform; |
| /** The total matrix without the text height scale. */ |
| DWRITE_MATRIX fXform; |
| /** The non-rotational part of total matrix without the text height scale. |
| * This is used to find the magnitude of gdi compatible advances. |
| */ |
| DWRITE_MATRIX fGsA; |
| /** The inverse of the rotational part of the total matrix. |
| * This is used to find the direction of gdi compatible advances. |
| */ |
| SkMatrix fG_inv; |
| /** The text size to render with. */ |
| SkScalar fTextSizeRender; |
| /** The text size to measure with. */ |
| SkScalar fTextSizeMeasure; |
| SkAutoTUnref<DWriteFontTypeface> fTypeface; |
| int fGlyphCount; |
| DWRITE_RENDERING_MODE fRenderingMode; |
| DWRITE_TEXTURE_TYPE fTextureType; |
| DWRITE_MEASURING_MODE fMeasuringMode; |
| }; |
| |
| static bool are_same(IUnknown* a, IUnknown* b) { |
| SkTScopedComPtr<IUnknown> iunkA; |
| if (FAILED(a->QueryInterface(&iunkA))) { |
| return false; |
| } |
| |
| SkTScopedComPtr<IUnknown> iunkB; |
| if (FAILED(b->QueryInterface(&iunkB))) { |
| return false; |
| } |
| |
| return iunkA.get() == iunkB.get(); |
| } |
| static bool FindByDWriteFont(SkTypeface* face, SkTypeface::Style requestedStyle, void* ctx) { |
| //Check to see if the two fonts are identical. |
| DWriteFontTypeface* dwFace = reinterpret_cast<DWriteFontTypeface*>(face); |
| IDWriteFont* dwFont = reinterpret_cast<IDWriteFont*>(ctx); |
| if (are_same(dwFace->fDWriteFont.get(), dwFont)) { |
| return true; |
| } |
| |
| //Check if the two fonts share the same loader and have the same key. |
| SkTScopedComPtr<IDWriteFontFace> dwFaceFontFace; |
| SkTScopedComPtr<IDWriteFontFace> dwFontFace; |
| HRB(dwFace->fDWriteFont->CreateFontFace(&dwFaceFontFace)); |
| HRB(dwFont->CreateFontFace(&dwFontFace)); |
| if (are_same(dwFaceFontFace.get(), dwFontFace.get())) { |
| return true; |
| } |
| |
| UINT32 dwFaceNumFiles; |
| UINT32 dwNumFiles; |
| HRB(dwFaceFontFace->GetFiles(&dwFaceNumFiles, NULL)); |
| HRB(dwFontFace->GetFiles(&dwNumFiles, NULL)); |
| if (dwFaceNumFiles != dwNumFiles) { |
| return false; |
| } |
| |
| SkTScopedComPtr<IDWriteFontFile> dwFaceFontFile; |
| SkTScopedComPtr<IDWriteFontFile> dwFontFile; |
| HRB(dwFaceFontFace->GetFiles(&dwFaceNumFiles, &dwFaceFontFile)); |
| HRB(dwFontFace->GetFiles(&dwNumFiles, &dwFontFile)); |
| |
| //for (each file) { //we currently only admit fonts from one file. |
| SkTScopedComPtr<IDWriteFontFileLoader> dwFaceFontFileLoader; |
| SkTScopedComPtr<IDWriteFontFileLoader> dwFontFileLoader; |
| HRB(dwFaceFontFile->GetLoader(&dwFaceFontFileLoader)); |
| HRB(dwFontFile->GetLoader(&dwFontFileLoader)); |
| if (!are_same(dwFaceFontFileLoader.get(), dwFontFileLoader.get())) { |
| return false; |
| } |
| //} |
| |
| const void* dwFaceFontRefKey; |
| UINT32 dwFaceFontRefKeySize; |
| const void* dwFontRefKey; |
| UINT32 dwFontRefKeySize; |
| HRB(dwFaceFontFile->GetReferenceKey(&dwFaceFontRefKey, &dwFaceFontRefKeySize)); |
| HRB(dwFontFile->GetReferenceKey(&dwFontRefKey, &dwFontRefKeySize)); |
| if (dwFaceFontRefKeySize != dwFontRefKeySize) { |
| return false; |
| } |
| if (0 != memcmp(dwFaceFontRefKey, dwFontRefKey, dwFontRefKeySize)) { |
| return false; |
| } |
| |
| //TODO: better means than comparing name strings? |
| //NOTE: .tfc and fake bold/italic will end up here. |
| SkTScopedComPtr<IDWriteFontFamily> dwFaceFontFamily; |
| SkTScopedComPtr<IDWriteFontFamily> dwFontFamily; |
| HRB(dwFace->fDWriteFont->GetFontFamily(&dwFaceFontFamily)); |
| HRB(dwFont->GetFontFamily(&dwFontFamily)); |
| |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFaceFontFamilyNames; |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFaceFontNames; |
| HRB(dwFaceFontFamily->GetFamilyNames(&dwFaceFontFamilyNames)); |
| HRB(dwFace->fDWriteFont->GetFaceNames(&dwFaceFontNames)); |
| |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFontFamilyNames; |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFontNames; |
| HRB(dwFontFamily->GetFamilyNames(&dwFontFamilyNames)); |
| HRB(dwFont->GetFaceNames(&dwFontNames)); |
| |
| UINT32 dwFaceFontFamilyNameLength; |
| UINT32 dwFaceFontNameLength; |
| HRB(dwFaceFontFamilyNames->GetStringLength(0, &dwFaceFontFamilyNameLength)); |
| HRB(dwFaceFontNames->GetStringLength(0, &dwFaceFontNameLength)); |
| |
| UINT32 dwFontFamilyNameLength; |
| UINT32 dwFontNameLength; |
| HRB(dwFontFamilyNames->GetStringLength(0, &dwFontFamilyNameLength)); |
| HRB(dwFontNames->GetStringLength(0, &dwFontNameLength)); |
| |
| if (dwFaceFontFamilyNameLength != dwFontFamilyNameLength || |
| dwFaceFontNameLength != dwFontNameLength) |
| { |
| return false; |
| } |
| |
| SkSMallocWCHAR dwFaceFontFamilyNameChar(dwFaceFontFamilyNameLength+1); |
| SkSMallocWCHAR dwFaceFontNameChar(dwFaceFontNameLength+1); |
| HRB(dwFaceFontFamilyNames->GetString(0, dwFaceFontFamilyNameChar.get(), dwFaceFontFamilyNameLength+1)); |
| HRB(dwFaceFontNames->GetString(0, dwFaceFontNameChar.get(), dwFaceFontNameLength+1)); |
| |
| SkSMallocWCHAR dwFontFamilyNameChar(dwFontFamilyNameLength+1); |
| SkSMallocWCHAR dwFontNameChar(dwFontNameLength+1); |
| HRB(dwFontFamilyNames->GetString(0, dwFontFamilyNameChar.get(), dwFontFamilyNameLength+1)); |
| HRB(dwFontNames->GetString(0, dwFontNameChar.get(), dwFontNameLength+1)); |
| |
| return wcscmp(dwFaceFontFamilyNameChar.get(), dwFontFamilyNameChar.get()) == 0 && |
| wcscmp(dwFaceFontNameChar.get(), dwFontNameChar.get()) == 0; |
| } |
| |
| class AutoDWriteTable { |
| public: |
| AutoDWriteTable(IDWriteFontFace* fontFace, UINT32 beTag) : fFontFace(fontFace), fExists(FALSE) { |
| // Any errors are ignored, user must check fExists anyway. |
| fontFace->TryGetFontTable(beTag, |
| reinterpret_cast<const void **>(&fData), &fSize, &fLock, &fExists); |
| } |
| ~AutoDWriteTable() { |
| if (fExists) { |
| fFontFace->ReleaseFontTable(fLock); |
| } |
| } |
| |
| const uint8_t* fData; |
| UINT32 fSize; |
| BOOL fExists; |
| private: |
| // Borrowed reference, the user must ensure the fontFace stays alive. |
| IDWriteFontFace* fFontFace; |
| void* fLock; |
| }; |
| template<typename T> class AutoTDWriteTable : public AutoDWriteTable { |
| public: |
| static const UINT32 tag = DWRITE_MAKE_OPENTYPE_TAG(T::TAG0, T::TAG1, T::TAG2, T::TAG3); |
| AutoTDWriteTable(IDWriteFontFace* fontFace) : AutoDWriteTable(fontFace, tag) { } |
| |
| const T* get() const { return reinterpret_cast<const T*>(fData); } |
| const T* operator->() const { return reinterpret_cast<const T*>(fData); } |
| }; |
| |
| static bool hasBitmapStrike(DWriteFontTypeface* typeface, int size) { |
| { |
| AutoTDWriteTable<SkOTTableEmbeddedBitmapLocation> eblc(typeface->fDWriteFontFace.get()); |
| if (!eblc.fExists) { |
| return false; |
| } |
| if (eblc.fSize < sizeof(SkOTTableEmbeddedBitmapLocation)) { |
| return false; |
| } |
| if (eblc->version != SkOTTableEmbeddedBitmapLocation::version_initial) { |
| return false; |
| } |
| |
| uint32_t numSizes = SkEndianSwap32(eblc->numSizes); |
| if (eblc.fSize < sizeof(SkOTTableEmbeddedBitmapLocation) + |
| sizeof(SkOTTableEmbeddedBitmapLocation::BitmapSizeTable) * numSizes) |
| { |
| return false; |
| } |
| |
| const SkOTTableEmbeddedBitmapLocation::BitmapSizeTable* sizeTable = |
| SkTAfter<const SkOTTableEmbeddedBitmapLocation::BitmapSizeTable>(eblc.get()); |
| for (uint32_t i = 0; i < numSizes; ++i, ++sizeTable) { |
| if (sizeTable->ppemX == size && sizeTable->ppemY == size) { |
| // TODO: determine if we should dig through IndexSubTableArray/IndexSubTable |
| // to determine the actual number of glyphs with bitmaps. |
| |
| // TODO: Ensure that the bitmaps actually cover a significant portion of the strike. |
| |
| //TODO: Endure that the bitmaps are bi-level. |
| if (sizeTable->endGlyphIndex >= sizeTable->startGlyphIndex + 3) { |
| return true; |
| } |
| } |
| } |
| } |
| |
| { |
| AutoTDWriteTable<SkOTTableEmbeddedBitmapScaling> ebsc(typeface->fDWriteFontFace.get()); |
| if (!ebsc.fExists) { |
| return false; |
| } |
| if (ebsc.fSize < sizeof(SkOTTableEmbeddedBitmapScaling)) { |
| return false; |
| } |
| if (ebsc->version != SkOTTableEmbeddedBitmapScaling::version_initial) { |
| return false; |
| } |
| |
| uint32_t numSizes = SkEndianSwap32(ebsc->numSizes); |
| if (ebsc.fSize < sizeof(SkOTTableEmbeddedBitmapScaling) + |
| sizeof(SkOTTableEmbeddedBitmapScaling::BitmapScaleTable) * numSizes) |
| { |
| return false; |
| } |
| |
| const SkOTTableEmbeddedBitmapScaling::BitmapScaleTable* scaleTable = |
| SkTAfter<const SkOTTableEmbeddedBitmapScaling::BitmapScaleTable>(ebsc.get()); |
| for (uint32_t i = 0; i < numSizes; ++i, ++scaleTable) { |
| if (scaleTable->ppemX == size && scaleTable->ppemY == size) { |
| // EBSC tables are normally only found in bitmap only fonts. |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| static bool bothZero(SkScalar a, SkScalar b) { |
| return 0 == a && 0 == b; |
| } |
| |
| // returns false if there is any non-90-rotation or skew |
| static bool isAxisAligned(const SkScalerContext::Rec& rec) { |
| return 0 == rec.fPreSkewX && |
| (bothZero(rec.fPost2x2[0][1], rec.fPost2x2[1][0]) || |
| bothZero(rec.fPost2x2[0][0], rec.fPost2x2[1][1])); |
| } |
| |
| SkScalerContext_DW::SkScalerContext_DW(DWriteFontTypeface* typeface, |
| const SkDescriptor* desc) |
| : SkScalerContext(typeface, desc) |
| , fTypeface(SkRef(typeface)) |
| , fGlyphCount(-1) { |
| |
| // In general, all glyphs should use CLEARTYPE_NATURAL_SYMMETRIC |
| // except when bi-level rendering is requested or there are embedded |
| // bi-level bitmaps (and the embedded bitmap flag is set and no rotation). |
| // |
| // DirectWrite's IDWriteFontFace::GetRecommendedRenderingMode does not do |
| // this. As a result, determine the actual size of the text and then see if |
| // there are any embedded bi-level bitmaps of that size. If there are, then |
| // force bitmaps by requesting bi-level rendering. |
| // |
| // FreeType allows for separate ppemX and ppemY, but DirectWrite assumes |
| // square pixels and only uses ppemY. Therefore the transform must track any |
| // non-uniform x-scale. |
| // |
| // Also, rotated glyphs should have the same absolute advance widths as |
| // horizontal glyphs and the subpixel flag should not affect glyph shapes. |
| |
| // A is the total matrix. |
| SkMatrix A; |
| fRec.getSingleMatrix(&A); |
| |
| // h is where A maps the horizontal baseline. |
| SkPoint h = SkPoint::Make(SK_Scalar1, 0); |
| A.mapPoints(&h, 1); |
| |
| // G is the Givens Matrix for A (rotational matrix where GA[0][1] == 0). |
| SkMatrix G; |
| SkComputeGivensRotation(h, &G); |
| |
| // GA is the matrix A with rotation removed. |
| SkMatrix GA(G); |
| GA.preConcat(A); |
| |
| // realTextSize is the actual device size we want (as opposed to the size the user requested). |
| // gdiTextSize is the size we request when GDI compatible. |
| // If the scale is negative, this means the matrix will do the flip anyway. |
| SkScalar realTextSize = SkScalarAbs(GA.get(SkMatrix::kMScaleY)); |
| // Due to floating point math, the lower bits are suspect. Round carefully. |
| SkScalar roundedTextSize = SkScalarRoundToScalar(realTextSize * 64.0f) / 64.0f; |
| SkScalar gdiTextSize = SkScalarFloorToScalar(roundedTextSize); |
| if (gdiTextSize == 0) { |
| gdiTextSize = SK_Scalar1; |
| } |
| |
| bool hasBitmap = fRec.fFlags & SkScalerContext::kEmbeddedBitmapText_Flag && |
| hasBitmapStrike(typeface, SkScalarTruncToInt(gdiTextSize)); |
| bool axisAligned = isAxisAligned(fRec); |
| bool isBiLevel = SkMask::kBW_Format == fRec.fMaskFormat || (hasBitmap && axisAligned); |
| |
| if (isBiLevel) { |
| fTextSizeRender = gdiTextSize; |
| fRenderingMode = DWRITE_RENDERING_MODE_ALIASED; |
| fTextureType = DWRITE_TEXTURE_ALIASED_1x1; |
| fTextSizeMeasure = gdiTextSize; |
| fMeasuringMode = DWRITE_MEASURING_MODE_GDI_CLASSIC; |
| } else if (hasBitmap) { |
| // If rotated but the horizontal text would have used a bitmap, |
| // render high quality rotated glyphs using the bitmap metrics. |
| fTextSizeRender = gdiTextSize; |
| fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC; |
| fTextureType = DWRITE_TEXTURE_CLEARTYPE_3x1; |
| fTextSizeMeasure = gdiTextSize; |
| fMeasuringMode = DWRITE_MEASURING_MODE_GDI_CLASSIC; |
| } else { |
| fTextSizeRender = realTextSize; |
| fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC; |
| fTextureType = DWRITE_TEXTURE_CLEARTYPE_3x1; |
| fTextSizeMeasure = realTextSize; |
| fMeasuringMode = DWRITE_MEASURING_MODE_NATURAL; |
| } |
| |
| if (this->isSubpixel()) { |
| fTextSizeMeasure = realTextSize; |
| fMeasuringMode = DWRITE_MEASURING_MODE_NATURAL; |
| } |
| |
| // Remove the realTextSize, as that is the text height scale currently in A. |
| SkScalar scale = SkScalarInvert(realTextSize); |
| |
| // fSkXform is the total matrix A without the text height scale. |
| fSkXform = A; |
| fSkXform.preScale(scale, scale); //remove the text height scale. |
| |
| fXform.m11 = SkScalarToFloat(fSkXform.getScaleX()); |
| fXform.m12 = SkScalarToFloat(fSkXform.getSkewY()); |
| fXform.m21 = SkScalarToFloat(fSkXform.getSkewX()); |
| fXform.m22 = SkScalarToFloat(fSkXform.getScaleY()); |
| fXform.dx = 0; |
| fXform.dy = 0; |
| |
| // GsA is the non-rotational part of A without the text height scale. |
| SkMatrix GsA(GA); |
| GsA.preScale(scale, scale); //remove text height scale, G is rotational so reorders with scale. |
| |
| fGsA.m11 = SkScalarToFloat(GsA.get(SkMatrix::kMScaleX)); |
| fGsA.m12 = SkScalarToFloat(GsA.get(SkMatrix::kMSkewY)); // This should be ~0. |
| fGsA.m21 = SkScalarToFloat(GsA.get(SkMatrix::kMSkewX)); |
| fGsA.m22 = SkScalarToFloat(GsA.get(SkMatrix::kMScaleY)); |
| |
| // fG_inv is G inverse, which is fairly simple since G is 2x2 rotational. |
| fG_inv.setAll(G.get(SkMatrix::kMScaleX), -G.get(SkMatrix::kMSkewX), G.get(SkMatrix::kMTransX), |
| -G.get(SkMatrix::kMSkewY), G.get(SkMatrix::kMScaleY), G.get(SkMatrix::kMTransY), |
| G.get(SkMatrix::kMPersp0), G.get(SkMatrix::kMPersp1), G.get(SkMatrix::kMPersp2)); |
| } |
| |
| SkScalerContext_DW::~SkScalerContext_DW() { |
| } |
| |
| unsigned SkScalerContext_DW::generateGlyphCount() { |
| if (fGlyphCount < 0) { |
| fGlyphCount = fTypeface->fDWriteFontFace->GetGlyphCount(); |
| } |
| return fGlyphCount; |
| } |
| |
| uint16_t SkScalerContext_DW::generateCharToGlyph(SkUnichar uni) { |
| uint16_t index = 0; |
| fTypeface->fDWriteFontFace->GetGlyphIndices(reinterpret_cast<UINT32*>(&uni), 1, &index); |
| return index; |
| } |
| |
| void SkScalerContext_DW::generateAdvance(SkGlyph* glyph) { |
| //Delta is the difference between the right/left side bearing metric |
| //and where the right/left side bearing ends up after hinting. |
| //DirectWrite does not provide this information. |
| glyph->fRsbDelta = 0; |
| glyph->fLsbDelta = 0; |
| |
| glyph->fAdvanceX = 0; |
| glyph->fAdvanceY = 0; |
| |
| uint16_t glyphId = glyph->getGlyphID(); |
| DWRITE_GLYPH_METRICS gm; |
| |
| if (DWRITE_MEASURING_MODE_GDI_CLASSIC == fMeasuringMode || |
| DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode) |
| { |
| HRVM(fTypeface->fDWriteFontFace->GetGdiCompatibleGlyphMetrics( |
| fTextSizeMeasure, |
| 1.0f, // pixelsPerDip |
| &fGsA, |
| DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode, |
| &glyphId, 1, |
| &gm), |
| "Could not get gdi compatible glyph metrics."); |
| } else { |
| HRVM(fTypeface->fDWriteFontFace->GetDesignGlyphMetrics(&glyphId, 1, &gm), |
| "Could not get design metrics."); |
| } |
| |
| DWRITE_FONT_METRICS dwfm; |
| fTypeface->fDWriteFontFace->GetMetrics(&dwfm); |
| SkScalar advanceX = SkScalarMulDiv(fTextSizeMeasure, |
| SkIntToScalar(gm.advanceWidth), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| |
| if (!this->isSubpixel()) { |
| advanceX = SkScalarRoundToScalar(advanceX); |
| } |
| |
| SkVector vecs[1] = { { advanceX, 0 } }; |
| if (DWRITE_MEASURING_MODE_GDI_CLASSIC == fMeasuringMode || |
| DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode) |
| { |
| fG_inv.mapVectors(vecs, SK_ARRAY_COUNT(vecs)); |
| } else { |
| fSkXform.mapVectors(vecs, SK_ARRAY_COUNT(vecs)); |
| } |
| |
| glyph->fAdvanceX = SkScalarToFixed(vecs[0].fX); |
| glyph->fAdvanceY = SkScalarToFixed(vecs[0].fY); |
| } |
| |
| void SkScalerContext_DW::generateMetrics(SkGlyph* glyph) { |
| glyph->fWidth = 0; |
| |
| this->generateAdvance(glyph); |
| |
| //Measure raster size. |
| fXform.dx = SkFixedToFloat(glyph->getSubXFixed()); |
| fXform.dy = SkFixedToFloat(glyph->getSubYFixed()); |
| |
| FLOAT advance = 0; |
| |
| UINT16 glyphId = glyph->getGlyphID(); |
| |
| DWRITE_GLYPH_OFFSET offset; |
| offset.advanceOffset = 0.0f; |
| offset.ascenderOffset = 0.0f; |
| |
| DWRITE_GLYPH_RUN run; |
| run.glyphCount = 1; |
| run.glyphAdvances = &advance; |
| run.fontFace = fTypeface->fDWriteFontFace.get(); |
| run.fontEmSize = SkScalarToFloat(fTextSizeRender); |
| run.bidiLevel = 0; |
| run.glyphIndices = &glyphId; |
| run.isSideways = FALSE; |
| run.glyphOffsets = &offset; |
| |
| SkTScopedComPtr<IDWriteGlyphRunAnalysis> glyphRunAnalysis; |
| HRVM(fTypeface->fFactory->CreateGlyphRunAnalysis( |
| &run, |
| 1.0f, // pixelsPerDip, |
| &fXform, |
| fRenderingMode, |
| fMeasuringMode, |
| 0.0f, // baselineOriginX, |
| 0.0f, // baselineOriginY, |
| &glyphRunAnalysis), |
| "Could not create glyph run analysis."); |
| |
| RECT bbox; |
| HRVM(glyphRunAnalysis->GetAlphaTextureBounds(fTextureType, &bbox), |
| "Could not get texture bounds."); |
| |
| glyph->fWidth = SkToU16(bbox.right - bbox.left); |
| glyph->fHeight = SkToU16(bbox.bottom - bbox.top); |
| glyph->fLeft = SkToS16(bbox.left); |
| glyph->fTop = SkToS16(bbox.top); |
| } |
| |
| void SkScalerContext_DW::generateFontMetrics(SkPaint::FontMetrics* mx, |
| SkPaint::FontMetrics* my) { |
| if (!(mx || my)) |
| return; |
| |
| if (mx) { |
| sk_bzero(mx, sizeof(*mx)); |
| } |
| if (my) { |
| sk_bzero(my, sizeof(*my)); |
| } |
| |
| DWRITE_FONT_METRICS dwfm; |
| if (DWRITE_MEASURING_MODE_GDI_CLASSIC == fMeasuringMode || |
| DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode) |
| { |
| fTypeface->fDWriteFontFace->GetGdiCompatibleMetrics( |
| fTextSizeRender, |
| 1.0f, // pixelsPerDip |
| &fXform, |
| &dwfm); |
| } else { |
| fTypeface->fDWriteFontFace->GetMetrics(&dwfm); |
| } |
| |
| SkScalar upem = SkIntToScalar(dwfm.designUnitsPerEm); |
| if (mx) { |
| mx->fTop = -fTextSizeRender * SkIntToScalar(dwfm.ascent) / upem; |
| mx->fAscent = mx->fTop; |
| mx->fDescent = fTextSizeRender * SkIntToScalar(dwfm.descent) / upem; |
| mx->fBottom = mx->fDescent; |
| mx->fLeading = fTextSizeRender * SkIntToScalar(dwfm.lineGap) / upem; |
| mx->fXHeight = fTextSizeRender * SkIntToScalar(dwfm.xHeight) / upem; |
| mx->fUnderlineThickness = fTextSizeRender * SkIntToScalar(dwfm.underlinePosition) / upem; |
| mx->fUnderlinePosition = -(fTextSizeRender * SkIntToScalar(dwfm.underlineThickness) / upem); |
| |
| mx->fFlags |= SkPaint::FontMetrics::kUnderlineThinknessIsValid_Flag; |
| mx->fFlags |= SkPaint::FontMetrics::kUnderlinePositionIsValid_Flag; |
| } |
| |
| if (my) { |
| my->fTop = -fTextSizeRender * SkIntToScalar(dwfm.ascent) / upem; |
| my->fAscent = my->fTop; |
| my->fDescent = fTextSizeRender * SkIntToScalar(dwfm.descent) / upem; |
| my->fBottom = my->fDescent; |
| my->fLeading = fTextSizeRender * SkIntToScalar(dwfm.lineGap) / upem; |
| my->fXHeight = fTextSizeRender * SkIntToScalar(dwfm.xHeight) / upem; |
| my->fUnderlineThickness = fTextSizeRender * SkIntToScalar(dwfm.underlinePosition) / upem; |
| my->fUnderlinePosition = -(fTextSizeRender * SkIntToScalar(dwfm.underlineThickness) / upem); |
| |
| my->fFlags |= SkPaint::FontMetrics::kUnderlineThinknessIsValid_Flag; |
| my->fFlags |= SkPaint::FontMetrics::kUnderlinePositionIsValid_Flag; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkColorPriv.h" |
| |
| static void bilevel_to_bw(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph) { |
| const int width = glyph.fWidth; |
| const size_t dstRB = (width + 7) >> 3; |
| uint8_t* SK_RESTRICT dst = static_cast<uint8_t*>(glyph.fImage); |
| |
| int byteCount = width >> 3; |
| int bitCount = width & 7; |
| |
| for (int y = 0; y < glyph.fHeight; ++y) { |
| if (byteCount > 0) { |
| for (int i = 0; i < byteCount; ++i) { |
| unsigned byte = 0; |
| byte |= src[0] & (1 << 7); |
| byte |= src[1] & (1 << 6); |
| byte |= src[2] & (1 << 5); |
| byte |= src[3] & (1 << 4); |
| byte |= src[4] & (1 << 3); |
| byte |= src[5] & (1 << 2); |
| byte |= src[6] & (1 << 1); |
| byte |= src[7] & (1 << 0); |
| dst[i] = byte; |
| src += 8; |
| } |
| } |
| if (bitCount > 0) { |
| unsigned byte = 0; |
| unsigned mask = 0x80; |
| for (int i = 0; i < bitCount; i++) { |
| byte |= (src[i]) & mask; |
| mask >>= 1; |
| } |
| dst[byteCount] = byte; |
| } |
| src += bitCount; |
| dst += dstRB; |
| } |
| } |
| |
| template<bool APPLY_PREBLEND> |
| static void rgb_to_a8(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph, const uint8_t* table8) { |
| const size_t dstRB = glyph.rowBytes(); |
| const U16CPU width = glyph.fWidth; |
| uint8_t* SK_RESTRICT dst = static_cast<uint8_t*>(glyph.fImage); |
| |
| for (U16CPU y = 0; y < glyph.fHeight; y++) { |
| for (U16CPU i = 0; i < width; i++) { |
| U8CPU r = *(src++); |
| U8CPU g = *(src++); |
| U8CPU b = *(src++); |
| dst[i] = sk_apply_lut_if<APPLY_PREBLEND>((r + g + b) / 3, table8); |
| } |
| dst = (uint8_t*)((char*)dst + dstRB); |
| } |
| } |
| |
| template<bool APPLY_PREBLEND> |
| static void rgb_to_lcd16(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph, |
| const uint8_t* tableR, const uint8_t* tableG, const uint8_t* tableB) { |
| const size_t dstRB = glyph.rowBytes(); |
| const U16CPU width = glyph.fWidth; |
| uint16_t* SK_RESTRICT dst = static_cast<uint16_t*>(glyph.fImage); |
| |
| for (U16CPU y = 0; y < glyph.fHeight; y++) { |
| for (U16CPU i = 0; i < width; i++) { |
| U8CPU r = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableR); |
| U8CPU g = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableG); |
| U8CPU b = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableB); |
| dst[i] = SkPack888ToRGB16(r, g, b); |
| } |
| dst = (uint16_t*)((char*)dst + dstRB); |
| } |
| } |
| |
| template<bool APPLY_PREBLEND> |
| static void rgb_to_lcd32(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph, |
| const uint8_t* tableR, const uint8_t* tableG, const uint8_t* tableB) { |
| const size_t dstRB = glyph.rowBytes(); |
| const U16CPU width = glyph.fWidth; |
| SkPMColor* SK_RESTRICT dst = static_cast<SkPMColor*>(glyph.fImage); |
| |
| for (U16CPU y = 0; y < glyph.fHeight; y++) { |
| for (U16CPU i = 0; i < width; i++) { |
| U8CPU r = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableR); |
| U8CPU g = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableG); |
| U8CPU b = sk_apply_lut_if<APPLY_PREBLEND>(*(src++), tableB); |
| dst[i] = SkPackARGB32(0xFF, r, g, b); |
| } |
| dst = (SkPMColor*)((char*)dst + dstRB); |
| } |
| } |
| |
| const void* SkScalerContext_DW::drawDWMask(const SkGlyph& glyph) { |
| int sizeNeeded = glyph.fWidth * glyph.fHeight; |
| if (DWRITE_RENDERING_MODE_ALIASED != fRenderingMode) { |
| sizeNeeded *= 3; |
| } |
| if (sizeNeeded > fBits.count()) { |
| fBits.setCount(sizeNeeded); |
| } |
| |
| // erase |
| memset(fBits.begin(), 0, sizeNeeded); |
| |
| fXform.dx = SkFixedToFloat(glyph.getSubXFixed()); |
| fXform.dy = SkFixedToFloat(glyph.getSubYFixed()); |
| |
| FLOAT advance = 0.0f; |
| |
| UINT16 index = glyph.getGlyphID(); |
| |
| DWRITE_GLYPH_OFFSET offset; |
| offset.advanceOffset = 0.0f; |
| offset.ascenderOffset = 0.0f; |
| |
| DWRITE_GLYPH_RUN run; |
| run.glyphCount = 1; |
| run.glyphAdvances = &advance; |
| run.fontFace = fTypeface->fDWriteFontFace.get(); |
| run.fontEmSize = SkScalarToFloat(fTextSizeRender); |
| run.bidiLevel = 0; |
| run.glyphIndices = &index; |
| run.isSideways = FALSE; |
| run.glyphOffsets = &offset; |
| |
| SkTScopedComPtr<IDWriteGlyphRunAnalysis> glyphRunAnalysis; |
| HRNM(fTypeface->fFactory->CreateGlyphRunAnalysis(&run, |
| 1.0f, // pixelsPerDip, |
| &fXform, |
| fRenderingMode, |
| fMeasuringMode, |
| 0.0f, // baselineOriginX, |
| 0.0f, // baselineOriginY, |
| &glyphRunAnalysis), |
| "Could not create glyph run analysis."); |
| |
| //NOTE: this assumes that the glyph has already been measured |
| //with an exact same glyph run analysis. |
| RECT bbox; |
| bbox.left = glyph.fLeft; |
| bbox.top = glyph.fTop; |
| bbox.right = glyph.fLeft + glyph.fWidth; |
| bbox.bottom = glyph.fTop + glyph.fHeight; |
| HRNM(glyphRunAnalysis->CreateAlphaTexture(fTextureType, |
| &bbox, |
| fBits.begin(), |
| sizeNeeded), |
| "Could not draw mask."); |
| return fBits.begin(); |
| } |
| |
| void SkScalerContext_DW::generateImage(const SkGlyph& glyph) { |
| //Create the mask. |
| const void* bits = this->drawDWMask(glyph); |
| if (!bits) { |
| sk_bzero(glyph.fImage, glyph.computeImageSize()); |
| return; |
| } |
| |
| //Copy the mask into the glyph. |
| const uint8_t* src = (const uint8_t*)bits; |
| if (DWRITE_RENDERING_MODE_ALIASED == fRenderingMode) { |
| bilevel_to_bw(src, glyph); |
| const_cast<SkGlyph&>(glyph).fMaskFormat = SkMask::kBW_Format; |
| } else if (!isLCD(fRec)) { |
| if (fPreBlend.isApplicable()) { |
| rgb_to_a8<true>(src, glyph, fPreBlend.fG); |
| } else { |
| rgb_to_a8<false>(src, glyph, fPreBlend.fG); |
| } |
| } else if (SkMask::kLCD16_Format == glyph.fMaskFormat) { |
| if (fPreBlend.isApplicable()) { |
| rgb_to_lcd16<true>(src, glyph, fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| } else { |
| rgb_to_lcd16<false>(src, glyph, fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| } |
| } else { |
| SkASSERT(SkMask::kLCD32_Format == glyph.fMaskFormat); |
| if (fPreBlend.isApplicable()) { |
| rgb_to_lcd32<true>(src, glyph, fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| } else { |
| rgb_to_lcd32<false>(src, glyph, fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| } |
| } |
| } |
| |
| void SkScalerContext_DW::generatePath(const SkGlyph& glyph, SkPath* path) { |
| SkASSERT(&glyph && path); |
| |
| path->reset(); |
| |
| SkTScopedComPtr<IDWriteGeometrySink> geometryToPath; |
| HRVM(SkDWriteGeometrySink::Create(path, &geometryToPath), |
| "Could not create geometry to path converter."); |
| uint16_t glyphId = glyph.getGlyphID(); |
| //TODO: convert to<->from DIUs? This would make a difference if hinting. |
| //It may not be needed, it appears that DirectWrite only hints at em size. |
| HRVM(fTypeface->fDWriteFontFace->GetGlyphRunOutline(SkScalarToFloat(fTextSizeRender), |
| &glyphId, |
| NULL, //advances |
| NULL, //offsets |
| 1, //num glyphs |
| FALSE, //sideways |
| FALSE, //rtl |
| geometryToPath.get()), |
| "Could not create glyph outline."); |
| |
| path->transform(fSkXform); |
| } |
| |
| void DWriteFontTypeface::onGetFontDescriptor(SkFontDescriptor* desc, |
| bool* isLocalStream) const { |
| // Get the family name. |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFamilyNames; |
| HRV(fDWriteFontFamily->GetFamilyNames(&dwFamilyNames)); |
| |
| UINT32 dwFamilyNamesLength; |
| HRV(dwFamilyNames->GetStringLength(0, &dwFamilyNamesLength)); |
| |
| SkSMallocWCHAR dwFamilyNameChar(dwFamilyNamesLength+1); |
| HRV(dwFamilyNames->GetString(0, dwFamilyNameChar.get(), dwFamilyNamesLength+1)); |
| |
| SkString utf8FamilyName; |
| HRV(sk_wchar_to_skstring(dwFamilyNameChar.get(), &utf8FamilyName)); |
| |
| desc->setFamilyName(utf8FamilyName.c_str()); |
| *isLocalStream = SkToBool(fDWriteFontFileLoader.get()); |
| } |
| |
| static SkUnichar next_utf8(const void** chars) { |
| return SkUTF8_NextUnichar((const char**)chars); |
| } |
| |
| static SkUnichar next_utf16(const void** chars) { |
| return SkUTF16_NextUnichar((const uint16_t**)chars); |
| } |
| |
| static SkUnichar next_utf32(const void** chars) { |
| const SkUnichar** uniChars = (const SkUnichar**)chars; |
| SkUnichar uni = **uniChars; |
| *uniChars += 1; |
| return uni; |
| } |
| |
| typedef SkUnichar (*EncodingProc)(const void**); |
| |
| static EncodingProc find_encoding_proc(SkTypeface::Encoding enc) { |
| static const EncodingProc gProcs[] = { |
| next_utf8, next_utf16, next_utf32 |
| }; |
| SkASSERT((size_t)enc < SK_ARRAY_COUNT(gProcs)); |
| return gProcs[enc]; |
| } |
| |
| int DWriteFontTypeface::onCharsToGlyphs(const void* chars, Encoding encoding, |
| uint16_t glyphs[], int glyphCount) const |
| { |
| if (NULL == glyphs) { |
| EncodingProc next_ucs4_proc = find_encoding_proc(encoding); |
| for (int i = 0; i < glyphCount; ++i) { |
| const SkUnichar c = next_ucs4_proc(&chars); |
| BOOL exists; |
| fDWriteFont->HasCharacter(c, &exists); |
| if (!exists) { |
| return i; |
| } |
| } |
| return glyphCount; |
| } |
| |
| switch (encoding) { |
| case SkTypeface::kUTF8_Encoding: |
| case SkTypeface::kUTF16_Encoding: { |
| static const int scratchCount = 256; |
| UINT32 scratch[scratchCount]; |
| EncodingProc next_ucs4_proc = find_encoding_proc(encoding); |
| for (int baseGlyph = 0; baseGlyph < glyphCount; baseGlyph += scratchCount) { |
| int glyphsLeft = glyphCount - baseGlyph; |
| int limit = SkTMin(glyphsLeft, scratchCount); |
| for (int i = 0; i < limit; ++i) { |
| scratch[i] = next_ucs4_proc(&chars); |
| } |
| fDWriteFontFace->GetGlyphIndices(scratch, limit, &glyphs[baseGlyph]); |
| } |
| break; |
| } |
| case SkTypeface::kUTF32_Encoding: { |
| const UINT32* utf32 = reinterpret_cast<const UINT32*>(chars); |
| fDWriteFontFace->GetGlyphIndices(utf32, glyphCount, glyphs); |
| break; |
| } |
| default: |
| SK_CRASH(); |
| } |
| |
| for (int i = 0; i < glyphCount; ++i) { |
| if (0 == glyphs[i]) { |
| return i; |
| } |
| } |
| return glyphCount; |
| } |
| |
| int DWriteFontTypeface::onCountGlyphs() const { |
| return fDWriteFontFace->GetGlyphCount(); |
| } |
| |
| int DWriteFontTypeface::onGetUPEM() const { |
| DWRITE_FONT_METRICS metrics; |
| fDWriteFontFace->GetMetrics(&metrics); |
| return metrics.designUnitsPerEm; |
| } |
| |
| class LocalizedStrings_IDWriteLocalizedStrings : public SkTypeface::LocalizedStrings { |
| public: |
| /** Takes ownership of the IDWriteLocalizedStrings. */ |
| explicit LocalizedStrings_IDWriteLocalizedStrings(IDWriteLocalizedStrings* strings) |
| : fIndex(0), fStrings(strings) |
| { } |
| |
| virtual bool next(SkTypeface::LocalizedString* localizedString) SK_OVERRIDE { |
| if (fIndex >= fStrings->GetCount()) { |
| return false; |
| } |
| |
| // String |
| UINT32 stringLength; |
| HRBM(fStrings->GetStringLength(fIndex, &stringLength), "Could not get string length."); |
| stringLength += 1; |
| |
| SkSMallocWCHAR wString(stringLength); |
| HRBM(fStrings->GetString(fIndex, wString.get(), stringLength), "Could not get string."); |
| |
| HRB(sk_wchar_to_skstring(wString.get(), &localizedString->fString)); |
| |
| // Locale |
| UINT32 localeLength; |
| HRBM(fStrings->GetLocaleNameLength(fIndex, &localeLength), "Could not get locale length."); |
| localeLength += 1; |
| |
| SkSMallocWCHAR wLocale(localeLength); |
| HRBM(fStrings->GetLocaleName(fIndex, wLocale.get(), localeLength), "Could not get locale."); |
| |
| HRB(sk_wchar_to_skstring(wLocale.get(), &localizedString->fLanguage)); |
| |
| ++fIndex; |
| return true; |
| } |
| |
| private: |
| UINT32 fIndex; |
| SkTScopedComPtr<IDWriteLocalizedStrings> fStrings; |
| }; |
| |
| SkTypeface::LocalizedStrings* DWriteFontTypeface::onCreateFamilyNameIterator() const { |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| HRNM(fDWriteFontFamily->GetFamilyNames(&familyNames), "Could not obtain family names."); |
| |
| return new LocalizedStrings_IDWriteLocalizedStrings(familyNames.release()); |
| } |
| |
| int DWriteFontTypeface::onGetTableTags(SkFontTableTag tags[]) const { |
| DWRITE_FONT_FACE_TYPE type = fDWriteFontFace->GetType(); |
| if (type != DWRITE_FONT_FACE_TYPE_CFF && |
| type != DWRITE_FONT_FACE_TYPE_TRUETYPE && |
| type != DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION) |
| { |
| return 0; |
| } |
| |
| int ttcIndex; |
| SkAutoTUnref<SkStream> stream(this->openStream(&ttcIndex)); |
| return stream.get() ? SkFontStream::GetTableTags(stream, ttcIndex, tags) : 0; |
| } |
| |
| size_t DWriteFontTypeface::onGetTableData(SkFontTableTag tag, size_t offset, |
| size_t length, void* data) const |
| { |
| AutoDWriteTable table(fDWriteFontFace.get(), SkEndian_SwapBE32(tag)); |
| if (!table.fExists) { |
| return 0; |
| } |
| |
| if (offset > table.fSize) { |
| return 0; |
| } |
| size_t size = SkTMin(length, table.fSize - offset); |
| if (NULL != data) { |
| memcpy(data, table.fData + offset, size); |
| } |
| |
| return size; |
| } |
| |
| template <typename T> class SkAutoIDWriteUnregister { |
| public: |
| SkAutoIDWriteUnregister(IDWriteFactory* factory, T* unregister) |
| : fFactory(factory), fUnregister(unregister) |
| { } |
| |
| ~SkAutoIDWriteUnregister() { |
| if (fUnregister) { |
| unregister(fFactory, fUnregister); |
| } |
| } |
| |
| T* detatch() { |
| T* old = fUnregister; |
| fUnregister = NULL; |
| return old; |
| } |
| |
| private: |
| HRESULT unregister(IDWriteFactory* factory, IDWriteFontFileLoader* unregister) { |
| return factory->UnregisterFontFileLoader(unregister); |
| } |
| |
| HRESULT unregister(IDWriteFactory* factory, IDWriteFontCollectionLoader* unregister) { |
| return factory->UnregisterFontCollectionLoader(unregister); |
| } |
| |
| IDWriteFactory* fFactory; |
| T* fUnregister; |
| }; |
| |
| SkStream* DWriteFontTypeface::onOpenStream(int* ttcIndex) const { |
| *ttcIndex = fDWriteFontFace->GetIndex(); |
| |
| UINT32 numFiles; |
| HRNM(fDWriteFontFace->GetFiles(&numFiles, NULL), |
| "Could not get number of font files."); |
| if (numFiles != 1) { |
| return NULL; |
| } |
| |
| SkTScopedComPtr<IDWriteFontFile> fontFile; |
| HRNM(fDWriteFontFace->GetFiles(&numFiles, &fontFile), "Could not get font files."); |
| |
| const void* fontFileKey; |
| UINT32 fontFileKeySize; |
| HRNM(fontFile->GetReferenceKey(&fontFileKey, &fontFileKeySize), |
| "Could not get font file reference key."); |
| |
| SkTScopedComPtr<IDWriteFontFileLoader> fontFileLoader; |
| HRNM(fontFile->GetLoader(&fontFileLoader), "Could not get font file loader."); |
| |
| SkTScopedComPtr<IDWriteFontFileStream> fontFileStream; |
| HRNM(fontFileLoader->CreateStreamFromKey(fontFileKey, fontFileKeySize, |
| &fontFileStream), |
| "Could not create font file stream."); |
| |
| return SkNEW_ARGS(SkDWriteFontFileStream, (fontFileStream.get())); |
| } |
| |
| SkScalerContext* DWriteFontTypeface::onCreateScalerContext(const SkDescriptor* desc) const { |
| return SkNEW_ARGS(SkScalerContext_DW, (const_cast<DWriteFontTypeface*>(this), desc)); |
| } |
| |
| void DWriteFontTypeface::onFilterRec(SkScalerContext::Rec* rec) const { |
| if (rec->fFlags & SkScalerContext::kLCD_BGROrder_Flag || |
| rec->fFlags & SkScalerContext::kLCD_Vertical_Flag) |
| { |
| rec->fMaskFormat = SkMask::kA8_Format; |
| } |
| |
| unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | |
| SkScalerContext::kForceAutohinting_Flag | |
| SkScalerContext::kEmbolden_Flag | |
| SkScalerContext::kLCD_BGROrder_Flag | |
| SkScalerContext::kLCD_Vertical_Flag; |
| rec->fFlags &= ~flagsWeDontSupport; |
| |
| SkPaint::Hinting h = rec->getHinting(); |
| // DirectWrite does not provide for hinting hints. |
| h = SkPaint::kSlight_Hinting; |
| rec->setHinting(h); |
| |
| #if SK_FONT_HOST_USE_SYSTEM_SETTINGS |
| IDWriteFactory* factory = get_dwrite_factory(); |
| if (factory != NULL) { |
| SkTScopedComPtr<IDWriteRenderingParams> defaultRenderingParams; |
| if (SUCCEEDED(factory->CreateRenderingParams(&defaultRenderingParams))) { |
| float gamma = defaultRenderingParams->GetGamma(); |
| rec->setDeviceGamma(gamma); |
| rec->setPaintGamma(gamma); |
| |
| rec->setContrast(defaultRenderingParams->GetEnhancedContrast()); |
| } |
| } |
| #endif |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| //PDF Support |
| |
| using namespace skia_advanced_typeface_metrics_utils; |
| |
| // Construct Glyph to Unicode table. |
| // Unicode code points that require conjugate pairs in utf16 are not |
| // supported. |
| // TODO(arthurhsu): Add support for conjugate pairs. It looks like that may |
| // require parsing the TTF cmap table (platform 4, encoding 12) directly instead |
| // of calling GetFontUnicodeRange(). |
| // TODO(bungeman): This never does what anyone wants. |
| // What is really wanted is the text to glyphs mapping |
| static void populate_glyph_to_unicode(IDWriteFontFace* fontFace, |
| const unsigned glyphCount, |
| SkTDArray<SkUnichar>* glyphToUnicode) { |
| HRESULT hr = S_OK; |
| |
| //Do this like free type instead |
| UINT32 count = 0; |
| for (UINT32 c = 0; c < 0x10FFFF; ++c) { |
| UINT16 glyph; |
| hr = fontFace->GetGlyphIndices(&c, 1, &glyph); |
| if (glyph > 0) { |
| ++count; |
| } |
| } |
| |
| SkAutoTArray<UINT32> chars(count); |
| count = 0; |
| for (UINT32 c = 0; c < 0x10FFFF; ++c) { |
| UINT16 glyph; |
| hr = fontFace->GetGlyphIndices(&c, 1, &glyph); |
| if (glyph > 0) { |
| chars[count] = c; |
| ++count; |
| } |
| } |
| |
| SkAutoTArray<UINT16> glyph(count); |
| fontFace->GetGlyphIndices(chars.get(), count, glyph.get()); |
| |
| USHORT maxGlyph = 0; |
| for (USHORT j = 0; j < count; ++j) { |
| if (glyph[j] > maxGlyph) maxGlyph = glyph[j]; |
| } |
| |
| glyphToUnicode->setCount(maxGlyph+1); |
| for (USHORT j = 0; j < maxGlyph+1u; ++j) { |
| (*glyphToUnicode)[j] = 0; |
| } |
| |
| //'invert' |
| for (USHORT j = 0; j < count; ++j) { |
| if (glyph[j] < glyphCount && (*glyphToUnicode)[glyph[j]] == 0) { |
| (*glyphToUnicode)[glyph[j]] = chars[j]; |
| } |
| } |
| } |
| |
| static bool getWidthAdvance(IDWriteFontFace* fontFace, int gId, int16_t* advance) { |
| SkASSERT(advance); |
| |
| UINT16 glyphId = gId; |
| DWRITE_GLYPH_METRICS gm; |
| HRESULT hr = fontFace->GetDesignGlyphMetrics(&glyphId, 1, &gm); |
| |
| if (FAILED(hr)) { |
| *advance = 0; |
| return false; |
| } |
| |
| *advance = gm.advanceWidth; |
| return true; |
| } |
| |
| SkAdvancedTypefaceMetrics* DWriteFontTypeface::onGetAdvancedTypefaceMetrics( |
| SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo, |
| const uint32_t* glyphIDs, |
| uint32_t glyphIDsCount) const { |
| |
| SkAdvancedTypefaceMetrics* info = NULL; |
| |
| HRESULT hr = S_OK; |
| |
| const unsigned glyphCount = fDWriteFontFace->GetGlyphCount(); |
| |
| DWRITE_FONT_METRICS dwfm; |
| fDWriteFontFace->GetMetrics(&dwfm); |
| |
| info = new SkAdvancedTypefaceMetrics; |
| info->fEmSize = dwfm.designUnitsPerEm; |
| info->fMultiMaster = false; |
| info->fLastGlyphID = SkToU16(glyphCount - 1); |
| info->fStyle = 0; |
| |
| |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| SkTScopedComPtr<IDWriteLocalizedStrings> faceNames; |
| hr = fDWriteFontFamily->GetFamilyNames(&familyNames); |
| hr = fDWriteFont->GetFaceNames(&faceNames); |
| |
| UINT32 familyNameLength; |
| hr = familyNames->GetStringLength(0, &familyNameLength); |
| |
| UINT32 faceNameLength; |
| hr = faceNames->GetStringLength(0, &faceNameLength); |
| |
| UINT32 size = familyNameLength+1+faceNameLength+1; |
| SkSMallocWCHAR wFamilyName(size); |
| hr = familyNames->GetString(0, wFamilyName.get(), size); |
| wFamilyName[familyNameLength] = L' '; |
| hr = faceNames->GetString(0, &wFamilyName[familyNameLength+1], size - faceNameLength + 1); |
| |
| hr = sk_wchar_to_skstring(wFamilyName.get(), &info->fFontName); |
| |
| if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { |
| populate_glyph_to_unicode(fDWriteFontFace.get(), glyphCount, &(info->fGlyphToUnicode)); |
| } |
| |
| DWRITE_FONT_FACE_TYPE fontType = fDWriteFontFace->GetType(); |
| if (fontType == DWRITE_FONT_FACE_TYPE_TRUETYPE || |
| fontType == DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION) { |
| info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; |
| } else { |
| info->fType = SkAdvancedTypefaceMetrics::kOther_Font; |
| info->fItalicAngle = 0; |
| info->fAscent = dwfm.ascent;; |
| info->fDescent = dwfm.descent; |
| info->fStemV = 0; |
| info->fCapHeight = dwfm.capHeight; |
| info->fBBox = SkIRect::MakeEmpty(); |
| return info; |
| } |
| |
| AutoTDWriteTable<SkOTTableHead> headTable(fDWriteFontFace.get()); |
| AutoTDWriteTable<SkOTTablePostScript> postTable(fDWriteFontFace.get()); |
| AutoTDWriteTable<SkOTTableHorizontalHeader> hheaTable(fDWriteFontFace.get()); |
| AutoTDWriteTable<SkOTTableOS2> os2Table(fDWriteFontFace.get()); |
| if (!headTable.fExists || !postTable.fExists || !hheaTable.fExists || !os2Table.fExists) { |
| info->fItalicAngle = 0; |
| info->fAscent = dwfm.ascent;; |
| info->fDescent = dwfm.descent; |
| info->fStemV = 0; |
| info->fCapHeight = dwfm.capHeight; |
| info->fBBox = SkIRect::MakeEmpty(); |
| return info; |
| } |
| |
| //There exist CJK fonts which set the IsFixedPitch and Monospace bits, |
| //but have full width, latin half-width, and half-width kana. |
| bool fixedWidth = (postTable->isFixedPitch && |
| (1 == SkEndian_SwapBE16(hheaTable->numberOfHMetrics))); |
| //Monospace |
| if (fixedWidth) { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; |
| } |
| //Italic |
| if (os2Table->version.v0.fsSelection.field.Italic) { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; |
| } |
| //Script |
| if (SkPanose::FamilyType::Script == os2Table->version.v0.panose.bFamilyType.value) { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; |
| //Serif |
| } else if (SkPanose::FamilyType::TextAndDisplay == os2Table->version.v0.panose.bFamilyType.value && |
| SkPanose::Data::TextAndDisplay::SerifStyle::Triangle <= os2Table->version.v0.panose.data.textAndDisplay.bSerifStyle.value && |
| SkPanose::Data::TextAndDisplay::SerifStyle::NoFit != os2Table->version.v0.panose.data.textAndDisplay.bSerifStyle.value) { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; |
| } |
| |
| info->fItalicAngle = SkEndian_SwapBE32(postTable->italicAngle) >> 16; |
| |
| info->fAscent = SkToS16(dwfm.ascent); |
| info->fDescent = SkToS16(dwfm.descent); |
| info->fCapHeight = SkToS16(dwfm.capHeight); |
| |
| info->fBBox = SkIRect::MakeLTRB((int32_t)SkEndian_SwapBE16((uint16_t)headTable->xMin), |
| (int32_t)SkEndian_SwapBE16((uint16_t)headTable->yMax), |
| (int32_t)SkEndian_SwapBE16((uint16_t)headTable->xMax), |
| (int32_t)SkEndian_SwapBE16((uint16_t)headTable->yMin)); |
| |
| //TODO: is this even desired? It seems PDF only wants this value for Type1 |
| //fonts, and we only get here for TrueType fonts. |
| info->fStemV = 0; |
| /* |
| // Figure out a good guess for StemV - Min width of i, I, !, 1. |
| // This probably isn't very good with an italic font. |
| int16_t min_width = SHRT_MAX; |
| info->fStemV = 0; |
| char stem_chars[] = {'i', 'I', '!', '1'}; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(stem_chars); i++) { |
| ABC abcWidths; |
| if (GetCharABCWidths(hdc, stem_chars[i], stem_chars[i], &abcWidths)) { |
| int16_t width = abcWidths.abcB; |
| if (width > 0 && width < min_width) { |
| min_width = width; |
| info->fStemV = min_width; |
| } |
| } |
| } |
| */ |
| |
| // If Restricted, the font may not be embedded in a document. |
| // If not Restricted, the font can be embedded. |
| // If PreviewPrint, the embedding is read-only. |
| if (os2Table->version.v0.fsType.field.Restricted) { |
| info->fType = SkAdvancedTypefaceMetrics::kNotEmbeddable_Font; |
| } else if (perGlyphInfo & SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo) { |
| if (fixedWidth) { |
| appendRange(&info->fGlyphWidths, 0); |
| int16_t advance; |
| getWidthAdvance(fDWriteFontFace.get(), 1, &advance); |
| info->fGlyphWidths->fAdvance.append(1, &advance); |
| finishRange(info->fGlyphWidths.get(), 0, |
| SkAdvancedTypefaceMetrics::WidthRange::kDefault); |
| } else { |
| info->fGlyphWidths.reset( |
| getAdvanceData(fDWriteFontFace.get(), |
| glyphCount, |
| glyphIDs, |
| glyphIDsCount, |
| getWidthAdvance)); |
| } |
| } |
| |
| return info; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkTypeface* SkFontMgr_DirectWrite::createTypefaceFromDWriteFont( |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily) const { |
| SkTypeface* face = FindByProcAndRef(FindByDWriteFont, font); |
| if (NULL == face) { |
| face = DWriteFontTypeface::Create(fFactory.get(), fontFace, font, fontFamily); |
| if (face) { |
| Add(face, get_style(font), true); |
| } |
| } |
| return face; |
| } |
| |
| int SkFontMgr_DirectWrite::onCountFamilies() const { |
| return fFontCollection->GetFontFamilyCount(); |
| } |
| |
| void SkFontMgr_DirectWrite::onGetFamilyName(int index, SkString* familyName) const { |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRVM(fFontCollection->GetFontFamily(index, &fontFamily), "Could not get requested family."); |
| |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| HRVM(fontFamily->GetFamilyNames(&familyNames), "Could not get family names."); |
| |
| sk_get_locale_string(familyNames.get(), fLocaleName.get(), familyName); |
| } |
| |
| SkFontStyleSet* SkFontMgr_DirectWrite::onCreateStyleSet(int index) const { |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRNM(fFontCollection->GetFontFamily(index, &fontFamily), "Could not get requested family."); |
| |
| return SkNEW_ARGS(SkFontStyleSet_DirectWrite, (this, fontFamily.get())); |
| } |
| |
| SkFontStyleSet* SkFontMgr_DirectWrite::onMatchFamily(const char familyName[]) const { |
| SkSMallocWCHAR dwFamilyName; |
| HRN(sk_cstring_to_wchar(familyName, &dwFamilyName)); |
| |
| UINT32 index; |
| BOOL exists; |
| HRNM(fFontCollection->FindFamilyName(dwFamilyName.get(), &index, &exists), |
| "Failed while finding family by name."); |
| if (!exists) { |
| return NULL; |
| } |
| |
| return this->onCreateStyleSet(index); |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onMatchFamilyStyle(const char familyName[], |
| const SkFontStyle& fontstyle) const { |
| SkAutoTUnref<SkFontStyleSet> sset(this->matchFamily(familyName)); |
| return sset->matchStyle(fontstyle); |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onMatchFaceStyle(const SkTypeface* familyMember, |
| const SkFontStyle& fontstyle) const { |
| SkString familyName; |
| SkFontStyleSet_DirectWrite sset( |
| this, ((DWriteFontTypeface*)familyMember)->fDWriteFontFamily.get() |
| ); |
| return sset.matchStyle(fontstyle); |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onCreateFromStream(SkStream* stream, int ttcIndex) const { |
| SkTScopedComPtr<StreamFontFileLoader> fontFileLoader; |
| HRN(StreamFontFileLoader::Create(stream, &fontFileLoader)); |
| HRN(fFactory->RegisterFontFileLoader(fontFileLoader.get())); |
| SkAutoIDWriteUnregister<StreamFontFileLoader> autoUnregisterFontFileLoader( |
| fFactory.get(), fontFileLoader.get()); |
| |
| SkTScopedComPtr<StreamFontCollectionLoader> fontCollectionLoader; |
| HRN(StreamFontCollectionLoader::Create(fontFileLoader.get(), &fontCollectionLoader)); |
| HRN(fFactory->RegisterFontCollectionLoader(fontCollectionLoader.get())); |
| SkAutoIDWriteUnregister<StreamFontCollectionLoader> autoUnregisterFontCollectionLoader( |
| fFactory.get(), fontCollectionLoader.get()); |
| |
| SkTScopedComPtr<IDWriteFontCollection> fontCollection; |
| HRN(fFactory->CreateCustomFontCollection(fontCollectionLoader.get(), NULL, 0, &fontCollection)); |
| |
| // Find the first non-simulated font which has the given ttc index. |
| UINT32 familyCount = fontCollection->GetFontFamilyCount(); |
| for (UINT32 familyIndex = 0; familyIndex < familyCount; ++familyIndex) { |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRN(fontCollection->GetFontFamily(familyIndex, &fontFamily)); |
| |
| UINT32 fontCount = fontFamily->GetFontCount(); |
| for (UINT32 fontIndex = 0; fontIndex < fontCount; ++fontIndex) { |
| SkTScopedComPtr<IDWriteFont> font; |
| HRN(fontFamily->GetFont(fontIndex, &font)); |
| if (font->GetSimulations() != DWRITE_FONT_SIMULATIONS_NONE) { |
| continue; |
| } |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRN(font->CreateFontFace(&fontFace)); |
| |
| UINT32 faceIndex = fontFace->GetIndex(); |
| if (faceIndex == ttcIndex) { |
| return DWriteFontTypeface::Create(fFactory.get(), |
| fontFace.get(), font.get(), fontFamily.get(), |
| autoUnregisterFontFileLoader.detatch(), |
| autoUnregisterFontCollectionLoader.detatch()); |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onCreateFromData(SkData* data, int ttcIndex) const { |
| SkAutoTUnref<SkStream> stream(SkNEW_ARGS(SkMemoryStream, (data))); |
| return this->createFromStream(stream, ttcIndex); |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onCreateFromFile(const char path[], int ttcIndex) const { |
| SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path)); |
| return this->createFromStream(stream, ttcIndex); |
| } |
| |
| HRESULT SkFontMgr_DirectWrite::getByFamilyName(const WCHAR wideFamilyName[], |
| IDWriteFontFamily** fontFamily) const { |
| UINT32 index; |
| BOOL exists; |
| HR(fFontCollection->FindFamilyName(wideFamilyName, &index, &exists)); |
| |
| if (exists) { |
| HR(fFontCollection->GetFontFamily(index, fontFamily)); |
| } |
| return S_OK; |
| } |
| |
| HRESULT SkFontMgr_DirectWrite::getDefaultFontFamily(IDWriteFontFamily** fontFamily) const { |
| NONCLIENTMETRICSW metrics; |
| metrics.cbSize = sizeof(metrics); |
| if (0 == SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, |
| sizeof(metrics), |
| &metrics, |
| 0)) { |
| return E_UNEXPECTED; |
| } |
| HRM(this->getByFamilyName(metrics.lfMessageFont.lfFaceName, fontFamily), |
| "Could not create DWrite font family from LOGFONT."); |
| return S_OK; |
| } |
| |
| SkTypeface* SkFontMgr_DirectWrite::onLegacyCreateTypeface(const char familyName[], |
| unsigned styleBits) const { |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| if (familyName) { |
| SkSMallocWCHAR wideFamilyName; |
| if (SUCCEEDED(sk_cstring_to_wchar(familyName, &wideFamilyName))) { |
| this->getByFamilyName(wideFamilyName, &fontFamily); |
| } |
| } |
| |
| if (NULL == fontFamily.get()) { |
| // No family with given name, try default. |
| HRNM(this->getDefaultFontFamily(&fontFamily), "Could not get default font family."); |
| } |
| |
| if (NULL == fontFamily.get()) { |
| // Could not obtain the default font. |
| HRNM(fFontCollection->GetFontFamily(0, &fontFamily), |
| "Could not get default-default font family."); |
| } |
| |
| SkTScopedComPtr<IDWriteFont> font; |
| DWRITE_FONT_WEIGHT weight = (styleBits & SkTypeface::kBold) |
| ? DWRITE_FONT_WEIGHT_BOLD |
| : DWRITE_FONT_WEIGHT_NORMAL; |
| DWRITE_FONT_STRETCH stretch = DWRITE_FONT_STRETCH_NORMAL; |
| DWRITE_FONT_STYLE italic = (styleBits & SkTypeface::kItalic) |
| ? DWRITE_FONT_STYLE_ITALIC |
| : DWRITE_FONT_STYLE_NORMAL; |
| HRNM(fontFamily->GetFirstMatchingFont(weight, stretch, italic, &font), |
| "Could not get matching font."); |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRNM(font->CreateFontFace(&fontFace), "Could not create font face."); |
| |
| return this->createTypefaceFromDWriteFont(fontFace.get(), font.get(), fontFamily.get()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| int SkFontStyleSet_DirectWrite::count() { |
| return fFontFamily->GetFontCount(); |
| } |
| |
| SkTypeface* SkFontStyleSet_DirectWrite::createTypeface(int index) { |
| SkTScopedComPtr<IDWriteFont> font; |
| HRNM(fFontFamily->GetFont(index, &font), "Could not get font."); |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRNM(font->CreateFontFace(&fontFace), "Could not create font face."); |
| |
| return fFontMgr->createTypefaceFromDWriteFont(fontFace.get(), font.get(), fFontFamily.get()); |
| } |
| |
| void SkFontStyleSet_DirectWrite::getStyle(int index, SkFontStyle* fs, SkString* styleName) { |
| SkTScopedComPtr<IDWriteFont> font; |
| HRVM(fFontFamily->GetFont(index, &font), "Could not get font."); |
| |
| if (fs) { |
| SkFontStyle::Slant slant; |
| switch (font->GetStyle()) { |
| case DWRITE_FONT_STYLE_NORMAL: |
| slant = SkFontStyle::kUpright_Slant; |
| break; |
| case DWRITE_FONT_STYLE_OBLIQUE: |
| case DWRITE_FONT_STYLE_ITALIC: |
| slant = SkFontStyle::kItalic_Slant; |
| break; |
| default: |
| SkASSERT(false); |
| } |
| |
| int weight = font->GetWeight(); |
| int width = font->GetStretch(); |
| |
| *fs = SkFontStyle(weight, width, slant); |
| } |
| |
| if (styleName) { |
| SkTScopedComPtr<IDWriteLocalizedStrings> faceNames; |
| if (SUCCEEDED(font->GetFaceNames(&faceNames))) { |
| sk_get_locale_string(faceNames.get(), fFontMgr->fLocaleName.get(), styleName); |
| } |
| } |
| } |
| |
| SkTypeface* SkFontStyleSet_DirectWrite::matchStyle(const SkFontStyle& pattern) { |
| DWRITE_FONT_STYLE slant; |
| switch (pattern.slant()) { |
| case SkFontStyle::kUpright_Slant: |
| slant = DWRITE_FONT_STYLE_NORMAL; |
| break; |
| case SkFontStyle::kItalic_Slant: |
| slant = DWRITE_FONT_STYLE_ITALIC; |
| break; |
| default: |
| SkASSERT(false); |
| } |
| |
| DWRITE_FONT_WEIGHT weight = (DWRITE_FONT_WEIGHT)pattern.weight(); |
| DWRITE_FONT_STRETCH width = (DWRITE_FONT_STRETCH)pattern.width(); |
| |
| SkTScopedComPtr<IDWriteFont> font; |
| // TODO: perhaps use GetMatchingFonts and get the least simulated? |
| HRNM(fFontFamily->GetFirstMatchingFont(weight, width, slant, &font), |
| "Could not match font in family."); |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRNM(font->CreateFontFace(&fontFace), "Could not create font face."); |
| |
| return fFontMgr->createTypefaceFromDWriteFont(fontFace.get(), font.get(), |
| fFontFamily.get()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkFontMgr* SkFontMgr_New_DirectWrite(IDWriteFactory* factory) { |
| if (NULL == factory) { |
| factory = sk_get_dwrite_factory(); |
| if (NULL == factory) { |
| return NULL; |
| } |
| } |
| |
| SkTScopedComPtr<IDWriteFontCollection> sysFontCollection; |
| HRNM(factory->GetSystemFontCollection(&sysFontCollection, FALSE), |
| "Could not get system font collection."); |
| |
| WCHAR localeNameStorage[LOCALE_NAME_MAX_LENGTH]; |
| WCHAR* localeName = NULL; |
| int localeNameLen = 0; |
| |
| // Dynamically load GetUserDefaultLocaleName function, as it is not available on XP. |
| SkGetUserDefaultLocaleNameProc getUserDefaultLocaleNameProc = NULL; |
| HRESULT hr = SkGetGetUserDefaultLocaleNameProc(&getUserDefaultLocaleNameProc); |
| if (NULL == getUserDefaultLocaleNameProc) { |
| SK_TRACEHR(hr, "Could not get GetUserDefaultLocaleName."); |
| } else { |
| localeNameLen = getUserDefaultLocaleNameProc(localeNameStorage, LOCALE_NAME_MAX_LENGTH); |
| if (localeNameLen) { |
| localeName = localeNameStorage; |
| }; |
| } |
| |
| return SkNEW_ARGS(SkFontMgr_DirectWrite, (factory, sysFontCollection.get(), |
| localeName, localeNameLen)); |
| } |
| |
| #include "SkFontMgr_indirect.h" |
| SkFontMgr* SkFontMgr_New_DirectWriteRenderer(SkRemotableFontMgr* proxy) { |
| SkAutoTUnref<SkFontMgr> impl(SkFontMgr_New_DirectWrite()); |
| if (impl.get() == NULL) { |
| return NULL; |
| } |
| return SkNEW_ARGS(SkFontMgr_Indirect, (impl.get(), proxy)); |
| } |
