| /* |
| * 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 "SkDWriteFontFileStream.h" |
| #include "SkDWriteGeometrySink.h" |
| #include "SkDescriptor.h" |
| #include "SkEndian.h" |
| #include "SkFontDescriptor.h" |
| #include "SkFontHost.h" |
| #include "SkGlyph.h" |
| #include "SkHRESULT.h" |
| #include "SkMaskGamma.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> |
| |
| SK_DECLARE_STATIC_MUTEX(gFTMutex); |
| |
| static bool isLCD(const SkScalerContext::Rec& rec) { |
| return SkMask::kLCD16_Format == rec.fMaskFormat || |
| SkMask::kLCD32_Format == rec.fMaskFormat; |
| } |
| |
| SkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) { |
| // Zero means that we don't have any fallback fonts for this fontID. |
| // This function is implemented on Android, but doesn't have much |
| // meaning here. |
| return 0; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class DWriteOffscreen { |
| public: |
| DWriteOffscreen() : fWidth(0), fHeight(0) { |
| } |
| |
| void init(IDWriteFontFace* fontFace, const DWRITE_MATRIX& xform, FLOAT fontSize) { |
| fFontFace = fontFace; |
| fFontSize = fontSize; |
| fXform = xform; |
| } |
| |
| const void* draw(const SkGlyph&, bool isBW); |
| |
| private: |
| uint16_t fWidth; |
| uint16_t fHeight; |
| IDWriteFontFace* fFontFace; |
| FLOAT fFontSize; |
| DWRITE_MATRIX fXform; |
| SkTDArray<uint8_t> fBits; |
| }; |
| |
| typedef HRESULT (WINAPI *DWriteCreateFactoryProc)( |
| __in DWRITE_FACTORY_TYPE factoryType, |
| __in REFIID iid, |
| __out IUnknown **factory |
| ); |
| |
| static HRESULT get_dwrite_factory(IDWriteFactory** factory) { |
| static IDWriteFactory* gDWriteFactory = NULL; |
| |
| if (gDWriteFactory != NULL) { |
| *factory = gDWriteFactory; |
| return S_OK; |
| } |
| |
| DWriteCreateFactoryProc dWriteCreateFactoryProc = |
| reinterpret_cast<DWriteCreateFactoryProc>( |
| GetProcAddress(LoadLibraryW(L"dwrite.dll"), "DWriteCreateFactory") |
| ) |
| ; |
| |
| if (!dWriteCreateFactoryProc) { |
| return E_UNEXPECTED; |
| } |
| |
| HRM(dWriteCreateFactoryProc(DWRITE_FACTORY_TYPE_SHARED, |
| __uuidof(IDWriteFactory), |
| reinterpret_cast<IUnknown**>(&gDWriteFactory)), |
| "Could not create DirectWrite factory."); |
| |
| *factory = gDWriteFactory; |
| return S_OK; |
| } |
| |
| const void* DWriteOffscreen::draw(const SkGlyph& glyph, bool isBW) { |
| IDWriteFactory* factory; |
| HRNM(get_dwrite_factory(&factory), "Could not get factory."); |
| |
| if (fWidth < glyph.fWidth || fHeight < glyph.fHeight) { |
| fWidth = SkMax32(fWidth, glyph.fWidth); |
| fHeight = SkMax32(fHeight, glyph.fHeight); |
| |
| if (isBW) { |
| fBits.setCount(fWidth * fHeight); |
| } else { |
| fBits.setCount(fWidth * fHeight * 3); |
| } |
| } |
| |
| // erase |
| memset(fBits.begin(), 0, fBits.count()); |
| |
| 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 = fFontFace; |
| run.fontEmSize = fFontSize; |
| run.bidiLevel = 0; |
| run.glyphIndices = &index; |
| run.isSideways = FALSE; |
| run.glyphOffsets = &offset; |
| |
| DWRITE_RENDERING_MODE renderingMode; |
| DWRITE_TEXTURE_TYPE textureType; |
| if (isBW) { |
| renderingMode = DWRITE_RENDERING_MODE_ALIASED; |
| textureType = DWRITE_TEXTURE_ALIASED_1x1; |
| } else { |
| renderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC; |
| textureType = DWRITE_TEXTURE_CLEARTYPE_3x1; |
| } |
| SkTScopedComPtr<IDWriteGlyphRunAnalysis> glyphRunAnalysis; |
| HRNM(factory->CreateGlyphRunAnalysis(&run, |
| 1.0f, // pixelsPerDip, |
| &fXform, |
| renderingMode, |
| DWRITE_MEASURING_MODE_NATURAL, |
| 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(textureType, |
| &bbox, |
| fBits.begin(), |
| fBits.count()), |
| "Could not draw mask."); |
| return fBits.begin(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| 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(stream) { |
| stream->ref(); |
| } |
| |
| 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(factory) |
| , fCurrentFile() |
| , fFontFileLoader(fontFileLoader) |
| , fHasNext(true) |
| { |
| factory->AddRef(); |
| fontFileLoader->AddRef(); |
| } |
| |
| 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; |
| } |
| |
| fCurrentFile.get()->AddRef(); |
| *fontFile = 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(fontFileLoader) |
| { |
| fontFileLoader->AddRef(); |
| } |
| |
| 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, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| StreamFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) |
| : SkTypeface(style, fontID, false) |
| , fDWriteFontCollectionLoader(fontCollectionLoader) |
| , fDWriteFontFileLoader(fontFileLoader) |
| , fDWriteFontFamily(fontFamily) |
| , fDWriteFont(font) |
| , fDWriteFontFace(fontFace) { |
| |
| if (fontCollectionLoader != NULL) { |
| fontCollectionLoader->AddRef(); |
| } |
| if (fontFileLoader != NULL) { |
| fontFileLoader->AddRef(); |
| } |
| fontFamily->AddRef(); |
| font->AddRef(); |
| fontFace->AddRef(); |
| } |
| |
| public: |
| SkTScopedComPtr<IDWriteFontCollectionLoader> fDWriteFontCollectionLoader; |
| SkTScopedComPtr<StreamFontFileLoader> fDWriteFontFileLoader; |
| SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily; |
| SkTScopedComPtr<IDWriteFont> fDWriteFont; |
| SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace; |
| |
| static DWriteFontTypeface* Create(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, |
| fontFace, font, fontFamily, |
| fontFileLoader, fontCollectionLoader)); |
| } |
| |
| ~DWriteFontTypeface() { |
| if (fDWriteFontCollectionLoader.get() == NULL) return; |
| |
| IDWriteFactory* factory; |
| HRVM(get_dwrite_factory(&factory), "Could not get factory."); |
| HRV(factory->UnregisterFontCollectionLoader(fDWriteFontCollectionLoader.get())); |
| HRV(factory->UnregisterFontFileLoader(fDWriteFontFileLoader.get())); |
| } |
| }; |
| |
| class SkScalerContext_Windows : public SkScalerContext { |
| public: |
| SkScalerContext_Windows(const SkDescriptor* desc); |
| virtual ~SkScalerContext_Windows(); |
| |
| 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, |
| SkMaskGamma::PreBlend* maskPreBlend) SK_OVERRIDE; |
| virtual void generatePath(const SkGlyph& glyph, SkPath* path) SK_OVERRIDE; |
| virtual void generateFontMetrics(SkPaint::FontMetrics* mX, |
| SkPaint::FontMetrics* mY) SK_OVERRIDE; |
| |
| private: |
| DWriteOffscreen fOffscreen; |
| DWRITE_MATRIX fXform; |
| SkAutoTUnref<DWriteFontTypeface> fTypeface; |
| int fGlyphCount; |
| }; |
| |
| #define SK_DWRITE_DEFAULT_FONT_NAMED 1 |
| #define SK_DWRITE_DEFAULT_FONT_MESSAGE 2 |
| #define SK_DWRITE_DEFAULT_FONT_THEME 3 |
| #define SK_DWRITE_DEFAULT_FONT_SHELLDLG 4 |
| #define SK_DWRITE_DEFAULT_FONT_GDI 5 |
| #define SK_DWRITE_DEFAULT_FONT_STRATEGY SK_DWRITE_DEFAULT_FONT_MESSAGE |
| |
| static HRESULT get_default_font(IDWriteFont** font) { |
| IDWriteFactory* factory; |
| HRM(get_dwrite_factory(&factory), "Could not get factory."); |
| |
| #if SK_DWRITE_DEFAULT_FONT_STRATEGY == SK_DWRITE_DEFAULT_FONT_NAMED |
| SkTScopedComPtr<IDWriteFontCollection> sysFonts; |
| HRM(factory->GetSystemFontCollection(&sysFonts, false), |
| "Could not get system font collection."); |
| |
| UINT32 index; |
| BOOL exists; |
| //hr = sysFonts->FindFamilyName(L"Georgia", &index, &exists); |
| HRM(sysFonts->FindFamilyName(L"Microsoft Sans Serif", &index, &exists), |
| "Could not access family names."); |
| |
| if (!exists) { |
| SkDEBUGF(("The hard coded font family does not exist.")); |
| return E_UNEXPECTED; |
| } |
| |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRM(sysFonts->GetFontFamily(index, &fontFamily), |
| "Could not load the requested font family."); |
| |
| HRM(fontFamily->GetFont(0, font), "Could not get first font from family."); |
| |
| #elif SK_DWRITE_DEFAULT_FONT_STRATEGY == SK_DWRITE_DEFAULT_FONT_MESSAGE |
| SkTScopedComPtr<IDWriteGdiInterop> gdi; |
| HRM(factory->GetGdiInterop(&gdi), "Could not get GDI interop."); |
| |
| NONCLIENTMETRICSW metrics; |
| metrics.cbSize = sizeof(metrics); |
| if (0 == SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, |
| sizeof(metrics), |
| &metrics, |
| 0)) { |
| return E_UNEXPECTED; |
| } |
| HRM(gdi->CreateFontFromLOGFONT(&metrics.lfMessageFont, font), |
| "Could not create DWrite font from LOGFONT."); |
| |
| #elif SK_DWRITE_DEFAULT_FONT_STRATEGY == SK_DWRITE_DEFAULT_FONT_THEME |
| //Theme body font? |
| |
| #elif SK_DWRITE_DEFAULT_FONT_STRATEGY == SK_DWRITE_DEFAULT_FONT_SHELLDLG |
| //"MS Shell Dlg" or "MS Shell Dlg 2"? |
| |
| #elif SK_DWRITE_DEFAULT_FONT_STRATEGY == SK_DWRITE_DEFAULT_FONT_GDI |
| //Never works. |
| SkTScopedComPtr<IDWriteGdiInterop> gdi; |
| HRM(factory->GetGdiInterop(&gdi), "Could not get GDI interop."); |
| |
| static LOGFONTW gDefaultFont = {}; |
| gDefaultFont.lfFaceName |
| HRM(gdi->CreateFontFromLOGFONT(&gDefaultFont, font), |
| "Could not create DWrite font from LOGFONT."; |
| #endif |
| return S_OK; |
| } |
| |
| 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; |
| } |
| |
| SkTDArray<wchar_t> dwFaceFontFamilyNameChar(new wchar_t[dwFaceFontFamilyNameLength+1], dwFaceFontFamilyNameLength+1); |
| SkTDArray<wchar_t> dwFaceFontNameChar(new wchar_t[dwFaceFontNameLength+1], dwFaceFontNameLength+1); |
| HRB(dwFaceFontFamilyNames->GetString(0, dwFaceFontFamilyNameChar.begin(), dwFaceFontFamilyNameChar.count())); |
| HRB(dwFaceFontNames->GetString(0, dwFaceFontNameChar.begin(), dwFaceFontNameChar.count())); |
| |
| SkTDArray<wchar_t> dwFontFamilyNameChar(new wchar_t[dwFontFamilyNameLength+1], dwFontFamilyNameLength+1); |
| SkTDArray<wchar_t> dwFontNameChar(new wchar_t[dwFontNameLength+1], dwFontNameLength+1); |
| HRB(dwFontFamilyNames->GetString(0, dwFontFamilyNameChar.begin(), dwFontFamilyNameChar.count())); |
| HRB(dwFontNames->GetString(0, dwFontNameChar.begin(), dwFontNameChar.count())); |
| |
| return wcscmp(dwFaceFontFamilyNameChar.begin(), dwFontFamilyNameChar.begin()) == 0 && |
| wcscmp(dwFaceFontNameChar.begin(), dwFontNameChar.begin()) == 0; |
| } |
| |
| SkTypeface* SkCreateTypefaceFromDWriteFont(IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| StreamFontFileLoader* fontFileLoader = NULL, |
| IDWriteFontCollectionLoader* fontCollectionLoader = NULL) { |
| SkTypeface* face = SkTypefaceCache::FindByProcAndRef(FindByDWriteFont, font); |
| if (NULL == face) { |
| face = DWriteFontTypeface::Create(fontFace, font, fontFamily, |
| fontFileLoader, fontCollectionLoader); |
| SkTypefaceCache::Add(face, get_style(font), fontCollectionLoader != NULL); |
| } |
| return face; |
| } |
| |
| void SkDWriteFontFromTypeface(const SkTypeface* face, IDWriteFont** font) { |
| if (NULL == face) { |
| HRVM(get_default_font(font), "Could not get default font."); |
| } else { |
| *font = static_cast<const DWriteFontTypeface*>(face)->fDWriteFont.get(); |
| (*font)->AddRef(); |
| } |
| } |
| static DWriteFontTypeface* GetDWriteFontByID(SkFontID fontID) { |
| return static_cast<DWriteFontTypeface*>(SkTypefaceCache::FindByID(fontID)); |
| } |
| |
| SkScalerContext_Windows::SkScalerContext_Windows(const SkDescriptor* desc) |
| : SkScalerContext(desc) |
| , fGlyphCount(-1) { |
| SkAutoMutexAcquire ac(gFTMutex); |
| |
| fXform.m11 = SkScalarToFloat(fRec.fPost2x2[0][0]); |
| fXform.m12 = SkScalarToFloat(fRec.fPost2x2[1][0]); |
| fXform.m21 = SkScalarToFloat(fRec.fPost2x2[0][1]); |
| fXform.m22 = SkScalarToFloat(fRec.fPost2x2[1][1]); |
| fXform.dx = 0; |
| fXform.dy = 0; |
| |
| fTypeface.reset(GetDWriteFontByID(fRec.fFontID)); |
| fTypeface.get()->ref(); |
| |
| fOffscreen.init(fTypeface->fDWriteFontFace.get(), fXform, SkScalarToFloat(fRec.fTextSize)); |
| } |
| |
| SkScalerContext_Windows::~SkScalerContext_Windows() { |
| } |
| |
| unsigned SkScalerContext_Windows::generateGlyphCount() { |
| if (fGlyphCount < 0) { |
| fGlyphCount = fTypeface->fDWriteFontFace->GetGlyphCount(); |
| } |
| return fGlyphCount; |
| } |
| |
| uint16_t SkScalerContext_Windows::generateCharToGlyph(SkUnichar uni) { |
| uint16_t index = 0; |
| fTypeface->fDWriteFontFace->GetGlyphIndices(reinterpret_cast<UINT32*>(&uni), 1, &index); |
| return index; |
| } |
| |
| void SkScalerContext_Windows::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; |
| HRVM(fTypeface->fDWriteFontFace->GetDesignGlyphMetrics(&glyphId, 1, &gm), |
| "Could not get design metrics."); |
| |
| DWRITE_FONT_METRICS dwfm; |
| fTypeface->fDWriteFontFace->GetMetrics(&dwfm); |
| |
| SkScalar advanceX = SkScalarMulDiv(fRec.fTextSize, |
| SkIntToScalar(gm.advanceWidth), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| |
| if (!(fRec.fFlags & kSubpixelPositioning_Flag)) { |
| advanceX = SkScalarRoundToScalar(advanceX); |
| } |
| |
| SkVector vecs[1] = { { advanceX, 0 } }; |
| SkMatrix mat; |
| mat.setAll(fRec.fPost2x2[0][0], fRec.fPost2x2[0][1], 0, |
| fRec.fPost2x2[1][0], fRec.fPost2x2[1][1], 0, |
| 0, 0, SkScalarToPersp(SK_Scalar1)); |
| mat.mapVectors(vecs, SK_ARRAY_COUNT(vecs)); |
| |
| glyph->fAdvanceX = SkScalarToFixed(vecs[0].fX); |
| glyph->fAdvanceY = SkScalarToFixed(vecs[0].fY); |
| } |
| |
| void SkScalerContext_Windows::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(fRec.fTextSize); |
| run.bidiLevel = 0; |
| run.glyphIndices = &glyphId; |
| run.isSideways = FALSE; |
| run.glyphOffsets = &offset; |
| |
| IDWriteFactory* factory; |
| HRVM(get_dwrite_factory(&factory), "Could not get factory."); |
| |
| const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat; |
| DWRITE_RENDERING_MODE renderingMode; |
| DWRITE_TEXTURE_TYPE textureType; |
| if (isBW) { |
| renderingMode = DWRITE_RENDERING_MODE_ALIASED; |
| textureType = DWRITE_TEXTURE_ALIASED_1x1; |
| } else { |
| renderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC; |
| textureType = DWRITE_TEXTURE_CLEARTYPE_3x1; |
| } |
| |
| SkTScopedComPtr<IDWriteGlyphRunAnalysis> glyphRunAnalysis; |
| HRVM(factory->CreateGlyphRunAnalysis(&run, |
| 1.0f, // pixelsPerDip, |
| &fXform, |
| renderingMode, |
| DWRITE_MEASURING_MODE_NATURAL, |
| 0.0f, // baselineOriginX, |
| 0.0f, // baselineOriginY, |
| &glyphRunAnalysis), |
| "Could not create glyph run analysis."); |
| |
| RECT bbox; |
| HRVM(glyphRunAnalysis->GetAlphaTextureBounds(textureType, &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_Windows::generateFontMetrics(SkPaint::FontMetrics* mx, |
| SkPaint::FontMetrics* my) { |
| if (!(mx || my)) |
| return; |
| |
| DWRITE_FONT_METRICS dwfm; |
| fTypeface->fDWriteFontFace->GetMetrics(&dwfm); |
| |
| if (mx) { |
| mx->fTop = SkScalarMulDiv(-fRec.fTextSize, |
| SkIntToScalar(dwfm.ascent), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| mx->fAscent = mx->fTop; |
| mx->fDescent = SkScalarMulDiv(fRec.fTextSize, |
| SkIntToScalar(dwfm.descent), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| mx->fBottom = mx->fDescent; |
| //TODO, can be less than zero |
| mx->fLeading = SkScalarMulDiv(fRec.fTextSize, |
| SkIntToScalar(dwfm.lineGap), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| } |
| |
| if (my) { |
| my->fTop = SkScalarMulDiv(-fRec.fTextSize, |
| SkIntToScalar(dwfm.ascent), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| my->fAscent = my->fTop; |
| my->fDescent = SkScalarMulDiv(fRec.fTextSize, |
| SkIntToScalar(dwfm.descent), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| my->fBottom = my->fDescent; |
| //TODO, can be less than zero |
| my->fLeading = SkScalarMulDiv(fRec.fTextSize, |
| SkIntToScalar(dwfm.lineGap), |
| SkIntToScalar(dwfm.designUnitsPerEm)); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #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); |
| } |
| } |
| |
| void SkScalerContext_Windows::generateImage(const SkGlyph& glyph, |
| SkMaskGamma::PreBlend* maskPreBlend) { |
| SkAutoMutexAcquire ac(gFTMutex); |
| |
| //Must be careful not to use these if maskPreBlend == NULL |
| const uint8_t* tableR = NULL; |
| const uint8_t* tableG = NULL; |
| const uint8_t* tableB = NULL; |
| if (maskPreBlend) { |
| tableR = maskPreBlend->fR; |
| tableG = maskPreBlend->fG; |
| tableB = maskPreBlend->fB; |
| } |
| |
| const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat; |
| const bool isAA = !isLCD(fRec); |
| |
| //Create the mask. |
| const void* bits = fOffscreen.draw(glyph, isBW); |
| if (!bits) { |
| sk_bzero(glyph.fImage, glyph.computeImageSize()); |
| return; |
| } |
| |
| //Copy the mask into the glyph. |
| int width = glyph.fWidth; |
| size_t dstRB = glyph.rowBytes(); |
| const uint8_t* src = (const uint8_t*)bits; |
| if (isBW) { |
| bilevel_to_bw(src, glyph); |
| } else if (isAA) { |
| if (maskPreBlend) { |
| rgb_to_a8<true>(src, glyph, tableG); |
| } else { |
| rgb_to_a8<false>(src, glyph, tableG); |
| } |
| } else if (SkMask::kLCD16_Format == glyph.fMaskFormat) { |
| if (maskPreBlend) { |
| rgb_to_lcd16<true>(src, glyph, tableR, tableG, tableB); |
| } else { |
| rgb_to_lcd16<false>(src, glyph, tableR, tableG, tableB); |
| } |
| } else { |
| SkASSERT(SkMask::kLCD32_Format == glyph.fMaskFormat); |
| if (maskPreBlend) { |
| rgb_to_lcd32<true>(src, glyph, tableR, tableG, tableB); |
| } else { |
| rgb_to_lcd32<false>(src, glyph, tableR, tableG, tableB); |
| } |
| } |
| } |
| |
| void SkScalerContext_Windows::generatePath(const SkGlyph& glyph, SkPath* path) { |
| SkAutoMutexAcquire ac(gFTMutex); |
| |
| 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(fRec.fTextSize), |
| &glyphId, |
| NULL, //advances |
| NULL, //offsets |
| 1, //num glyphs |
| FALSE, //sideways |
| FALSE, //rtl |
| geometryToPath.get()), |
| "Could not create glyph outline."); |
| } |
| |
| void SkFontHost::Serialize(const SkTypeface* rawFace, SkWStream* stream) { |
| const DWriteFontTypeface* face = static_cast<const DWriteFontTypeface*>(rawFace); |
| SkFontDescriptor descriptor(face->style()); |
| |
| // Get the family name. |
| SkTScopedComPtr<IDWriteLocalizedStrings> dwFamilyNames; |
| HRV(face->fDWriteFontFamily->GetFamilyNames(&dwFamilyNames)); |
| |
| UINT32 dwFamilyNamesLength; |
| HRV(dwFamilyNames->GetStringLength(0, &dwFamilyNamesLength)); |
| |
| SkTDArray<wchar_t> dwFamilyNameChar(new wchar_t[dwFamilyNamesLength+1], dwFamilyNamesLength+1); |
| HRV(dwFamilyNames->GetString(0, dwFamilyNameChar.begin(), dwFamilyNameChar.count())); |
| |
| // Convert the family name to utf8. |
| // Get the buffer size needed first. |
| int str_len = WideCharToMultiByte(CP_UTF8, 0, dwFamilyNameChar.begin(), -1, |
| NULL, 0, NULL, NULL); |
| // Allocate a buffer (str_len already has terminating null accounted for). |
| SkTDArray<char> utf8FamilyName(new char[str_len], str_len); |
| // Now actually convert the string. |
| str_len = WideCharToMultiByte(CP_UTF8, 0, dwFamilyNameChar.begin(), -1, |
| utf8FamilyName.begin(), str_len, NULL, NULL); |
| |
| descriptor.setFamilyName(utf8FamilyName.begin()); |
| //TODO: FileName and PostScriptName currently unsupported. |
| |
| descriptor.serialize(stream); |
| |
| if (NULL != face->fDWriteFontFileLoader.get()) { |
| // store the entire font in the fontData |
| SkStream* fontStream = face->fDWriteFontFileLoader->fStream.get(); |
| const uint32_t length = fontStream->getLength(); |
| |
| stream->writePackedUInt(length); |
| stream->writeStream(fontStream, length); |
| } else { |
| stream->writePackedUInt(0); |
| } |
| } |
| |
| SkTypeface* SkFontHost::Deserialize(SkStream* stream) { |
| SkFontDescriptor descriptor(stream); |
| |
| const uint32_t customFontDataLength = stream->readPackedUInt(); |
| if (customFontDataLength > 0) { |
| // generate a new stream to store the custom typeface |
| SkAutoTUnref<SkMemoryStream> fontStream(SkNEW_ARGS(SkMemoryStream, (customFontDataLength - 1))); |
| stream->read((void*)fontStream->getMemoryBase(), customFontDataLength - 1); |
| |
| return CreateTypefaceFromStream(fontStream.get()); |
| } |
| |
| return SkFontHost::CreateTypeface(NULL, descriptor.getFamilyName(), descriptor.getStyle()); |
| } |
| |
| SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { |
| IDWriteFactory* factory; |
| HRN(get_dwrite_factory(&factory)); |
| |
| SkTScopedComPtr<StreamFontFileLoader> fontFileLoader; |
| HRN(StreamFontFileLoader::Create(stream, &fontFileLoader)); |
| HRN(factory->RegisterFontFileLoader(fontFileLoader.get())); |
| |
| SkTScopedComPtr<StreamFontCollectionLoader> streamFontCollectionLoader; |
| HRN(StreamFontCollectionLoader::Create(fontFileLoader.get(), &streamFontCollectionLoader)); |
| HRN(factory->RegisterFontCollectionLoader(streamFontCollectionLoader.get())); |
| |
| SkTScopedComPtr<IDWriteFontCollection> streamFontCollection; |
| HRN(factory->CreateCustomFontCollection(streamFontCollectionLoader.get(), NULL, 0, |
| &streamFontCollection)); |
| |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRN(streamFontCollection->GetFontFamily(0, &fontFamily)); |
| |
| SkTScopedComPtr<IDWriteFont> font; |
| HRN(fontFamily->GetFont(0, &font)); |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRN(font->CreateFontFace(&fontFace)); |
| |
| return SkCreateTypefaceFromDWriteFont(fontFace.get(), font.get(), fontFamily.get(), |
| fontFileLoader.get(), streamFontCollectionLoader.get()); |
| } |
| |
| SkStream* SkFontHost::OpenStream(SkFontID uniqueID) { |
| DWriteFontTypeface* typeface = GetDWriteFontByID(uniqueID); |
| if (NULL == typeface) { |
| return NULL; |
| } |
| |
| UINT32 numFiles; |
| HRNM(typeface->fDWriteFontFace->GetFiles(&numFiles, NULL), |
| "Could not get number of font files."); |
| if (numFiles != 1) { |
| return NULL; |
| } |
| |
| SkTScopedComPtr<IDWriteFontFile> fontFile; |
| HRNM(typeface->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* SkFontHost::CreateScalerContext(const SkDescriptor* desc) { |
| return SkNEW_ARGS(SkScalerContext_Windows, (desc)); |
| } |
| |
| static HRESULT get_by_family_name(const char familyName[], IDWriteFontFamily** fontFamily) { |
| IDWriteFactory* factory; |
| HR(get_dwrite_factory(&factory)); |
| |
| SkTScopedComPtr<IDWriteFontCollection> sysFontCollection; |
| HR(factory->GetSystemFontCollection(&sysFontCollection, FALSE)); |
| |
| // Get the buffer size needed first. |
| int wlen = ::MultiByteToWideChar(CP_UTF8, 0, familyName,-1, NULL, 0); |
| if (0 == wlen) { |
| return HRESULT_FROM_WIN32(GetLastError()); |
| } |
| // Allocate a buffer |
| SkTDArray<wchar_t> wideFamilyName(new wchar_t[wlen], wlen); |
| // Now actually convert the string. |
| wlen = ::MultiByteToWideChar(CP_UTF8, 0, familyName, -1, |
| wideFamilyName.begin(), wlen); |
| if (0 == wlen) { |
| return HRESULT_FROM_WIN32(GetLastError()); |
| } |
| |
| UINT32 index; |
| BOOL exists; |
| HR(sysFontCollection->FindFamilyName(wideFamilyName.begin(), &index, &exists)); |
| |
| if (exists) { |
| HR(sysFontCollection->GetFontFamily(index, fontFamily)); |
| return S_OK; |
| } |
| return S_FALSE; |
| } |
| |
| /** Return the closest matching typeface given either an existing family |
| (specified by a typeface in that family) or by a familyName, and a |
| requested style. |
| 1) If familyFace is null, use familyName. |
| 2) If familyName is null, use familyFace. |
| 3) If both are null, return the default font that best matches style |
| This MUST not return NULL. |
| */ |
| SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, |
| const char familyName[], |
| SkTypeface::Style style) { |
| HRESULT hr; |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| SkTScopedComPtr<IDWriteFontCollectionLoader> fontCollectionLoader; |
| SkTScopedComPtr<IDWriteFontFileLoader> fontFileLoader; |
| if (familyFace) { |
| const DWriteFontTypeface* face = static_cast<const DWriteFontTypeface*>(familyFace); |
| face->fDWriteFontFamily.get()->AddRef(); |
| *(&fontFamily) = face->fDWriteFontFamily.get(); |
| |
| if (face->fDWriteFontCollectionLoader.get() != NULL) { |
| face->fDWriteFontCollectionLoader.get()->AddRef(); |
| *(&fontCollectionLoader) = face->fDWriteFontCollectionLoader.get(); |
| |
| face->fDWriteFontFileLoader.get()->AddRef(); |
| *(&fontFileLoader) = face->fDWriteFontFileLoader.get(); |
| } |
| |
| } else if (familyName) { |
| hr = get_by_family_name(familyName, &fontFamily); |
| } |
| |
| if (NULL == fontFamily.get()) { |
| //No good family found, go with default. |
| SkTScopedComPtr<IDWriteFont> font; |
| hr = get_default_font(&font); |
| hr = font->GetFontFamily(&fontFamily); |
| } |
| |
| SkTScopedComPtr<IDWriteFont> font; |
| DWRITE_FONT_WEIGHT weight = (style & SkTypeface::kBold) |
| ? DWRITE_FONT_WEIGHT_BOLD |
| : DWRITE_FONT_WEIGHT_NORMAL; |
| DWRITE_FONT_STRETCH stretch = DWRITE_FONT_STRETCH_UNDEFINED; |
| DWRITE_FONT_STYLE italic = (style & SkTypeface::kItalic) |
| ? DWRITE_FONT_STYLE_ITALIC |
| : DWRITE_FONT_STYLE_NORMAL; |
| hr = fontFamily->GetFirstMatchingFont(weight, stretch, italic, &font); |
| |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| hr = font->CreateFontFace(&fontFace); |
| |
| return SkCreateTypefaceFromDWriteFont(fontFace.get(), font.get(), fontFamily.get()); |
| } |
| |
| SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { |
| printf("SkFontHost::CreateTypefaceFromFile unimplemented"); |
| return NULL; |
| } |
| |
| void SkFontHost::FilterRec(SkScalerContext::Rec* rec, SkTypeface*) { |
| unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | |
| SkScalerContext::kAutohinting_Flag | |
| SkScalerContext::kEmbeddedBitmapText_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; |
| if (SUCCEEDED(get_dwrite_factory(&factory))) { |
| SkTScopedComPtr<IDWriteRenderingParams> defaultRenderingParams; |
| if (SUCCEEDED(factory->CreateRenderingParams(&defaultRenderingParams))) { |
| float gamma = defaultRenderingParams->GetGamma(); |
| rec->setDeviceGamma(SkFloatToScalar(gamma)); |
| rec->setPaintGamma(SkFloatToScalar(gamma)); |
| |
| rec->setContrast(SkFloatToScalar(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 (size_t 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; |
| } |
| |
| template<typename T> |
| class AutoDWriteTable { |
| public: |
| AutoDWriteTable(IDWriteFontFace* fontFace) |
| : fFontFace(fontFace) |
| , fExists(FALSE) { |
| |
| //fontFace->AddRef(); |
| const UINT32 tag = DWRITE_MAKE_OPENTYPE_TAG(T::TAG0, |
| T::TAG1, |
| T::TAG2, |
| T::TAG3); |
| HRESULT hr = fontFace->TryGetFontTable(tag, |
| reinterpret_cast<const void **>(&fData), &fSize, &fLock, &fExists); |
| } |
| ~AutoDWriteTable() { |
| if (fExists) { |
| fFontFace->ReleaseFontTable(fLock); |
| } |
| } |
| const T* operator->() const { return fData; } |
| |
| const T* fData; |
| UINT32 fSize; |
| BOOL fExists; |
| private: |
| //SkTScopedComPtr<IDWriteFontFace> fFontFace; |
| IDWriteFontFace* fFontFace; |
| void* fLock; |
| }; |
| |
| // static |
| SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics( |
| uint32_t fontID, |
| SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo, |
| const uint32_t* glyphIDs, |
| uint32_t glyphIDsCount) { |
| |
| SkAdvancedTypefaceMetrics* info = NULL; |
| |
| HRESULT hr = S_OK; |
| |
| DWriteFontTypeface* typeface = GetDWriteFontByID(fontID); |
| |
| const unsigned glyphCount = typeface->fDWriteFontFace->GetGlyphCount(); |
| |
| DWRITE_FONT_METRICS dwfm; |
| typeface->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 = typeface->fDWriteFontFamily->GetFamilyNames(&familyNames); |
| hr = typeface->fDWriteFont->GetFaceNames(&faceNames); |
| |
| UINT32 familyNameLength; |
| hr = familyNames->GetStringLength(0, &familyNameLength); |
| |
| UINT32 faceNameLength; |
| hr = faceNames->GetStringLength(0, &faceNameLength); |
| |
| size_t size = familyNameLength+1+faceNameLength+1; |
| SkTDArray<wchar_t> wFamilyName(new wchar_t[size], size); |
| hr = familyNames->GetString(0, wFamilyName.begin(), size); |
| wFamilyName[familyNameLength] = L' '; |
| hr = faceNames->GetString(0, &wFamilyName[familyNameLength+1], size - faceNameLength + 1); |
| |
| size_t str_len = WideCharToMultiByte(CP_UTF8, 0, wFamilyName.begin(), -1, NULL, 0, NULL, NULL); |
| if (0 == str_len) { |
| //TODO: error |
| } |
| SkTDArray<char> familyName(new char[str_len], str_len); |
| str_len = WideCharToMultiByte(CP_UTF8, 0, wFamilyName.begin(), -1, familyName.begin(), str_len, NULL, NULL); |
| if (0 == str_len) { |
| //TODO: error |
| } |
| info->fFontName.set(familyName.begin(), str_len); |
| |
| if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { |
| populate_glyph_to_unicode(typeface->fDWriteFontFace.get(), glyphCount, &(info->fGlyphToUnicode)); |
| } |
| |
| DWRITE_FONT_FACE_TYPE fontType = typeface->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; |
| } |
| |
| AutoDWriteTable<SkOTTableHead> headTable(typeface->fDWriteFontFace.get()); |
| AutoDWriteTable<SkOTTablePostScript> postTable(typeface->fDWriteFontFace.get()); |
| AutoDWriteTable<SkOTTableHorizontalHeader> hheaTable(typeface->fDWriteFontFace.get()); |
| AutoDWriteTable<SkOTTableOS2> os2Table(typeface->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; |
| } |
| //Symbolic (uses more than base latin). |
| info->fStyle |= SkAdvancedTypefaceMetrics::kSymbolic_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(typeface->fDWriteFontFace.get(), 1, &advance); |
| info->fGlyphWidths->fAdvance.append(1, &advance); |
| finishRange(info->fGlyphWidths.get(), 0, |
| SkAdvancedTypefaceMetrics::WidthRange::kDefault); |
| } else { |
| info->fGlyphWidths.reset( |
| getAdvanceData(typeface->fDWriteFontFace.get(), |
| glyphCount, |
| glyphIDs, |
| glyphIDsCount, |
| getWidthAdvance)); |
| } |
| } |
| |
| return info; |
| } |
