| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "SkDWriteNTDDI_VERSION.h" |
| |
| #include "SkTypes.h" |
| #if defined(SK_BUILD_FOR_WIN) |
| |
| #include "SkDWrite.h" |
| #include "SkDWriteFontFileStream.h" |
| #include "SkHRESULT.h" |
| #include "SkMutex.h" |
| #include "SkRemotableFontMgr.h" |
| #include "SkStream.h" |
| #include "SkString.h" |
| #include "SkTArray.h" |
| #include "SkTScopedComPtr.h" |
| #include "SkTypeface_win_dw.h" |
| #include "SkTypes.h" |
| #include "SkUTF.h" |
| |
| #include <dwrite.h> |
| |
| class SK_API SkRemotableFontMgr_DirectWrite : public SkRemotableFontMgr { |
| private: |
| struct DataId { |
| IUnknown* fLoader; // In COM only IUnknown pointers may be safely used for identity. |
| void* fKey; |
| UINT32 fKeySize; |
| |
| DataId() { } |
| |
| DataId(DataId&& that) : fLoader(that.fLoader), fKey(that.fKey), fKeySize(that.fKeySize) { |
| that.fLoader = nullptr; |
| that.fKey = nullptr; |
| SkDEBUGCODE(that.fKeySize = 0xFFFFFFFF;) |
| } |
| |
| ~DataId() { |
| if (fLoader) { |
| fLoader->Release(); |
| } |
| sk_free(fKey); |
| } |
| }; |
| |
| mutable SkTArray<DataId> fDataIdCache; |
| mutable SkMutex fDataIdCacheMutex; |
| |
| int FindOrAdd(IDWriteFontFileLoader* fontFileLoader, |
| const void* refKey, UINT32 refKeySize) const |
| { |
| SkTScopedComPtr<IUnknown> fontFileLoaderId; |
| HR_GENERAL(fontFileLoader->QueryInterface(&fontFileLoaderId), |
| "Failed to re-convert to IDWriteFontFileLoader.", |
| SkFontIdentity::kInvalidDataId); |
| |
| SkAutoMutexAcquire ama(fDataIdCacheMutex); |
| int count = fDataIdCache.count(); |
| int i; |
| for (i = 0; i < count; ++i) { |
| const DataId& current = fDataIdCache[i]; |
| if (fontFileLoaderId.get() == current.fLoader && |
| refKeySize == current.fKeySize && |
| 0 == memcmp(refKey, current.fKey, refKeySize)) |
| { |
| return i; |
| } |
| } |
| DataId& added = fDataIdCache.push_back(); |
| added.fLoader = fontFileLoaderId.release(); // Ref is passed. |
| added.fKey = sk_malloc_throw(refKeySize); |
| memcpy(added.fKey, refKey, refKeySize); |
| added.fKeySize = refKeySize; |
| |
| return i; |
| } |
| |
| public: |
| |
| |
| /** localeNameLength must include the null terminator. */ |
| SkRemotableFontMgr_DirectWrite(IDWriteFontCollection* fontCollection, |
| WCHAR* localeName, int localeNameLength) |
| : fFontCollection(SkRefComPtr(fontCollection)) |
| , fLocaleName(localeNameLength) |
| { |
| memcpy(fLocaleName.get(), localeName, localeNameLength * sizeof(WCHAR)); |
| } |
| |
| HRESULT FontToIdentity(IDWriteFont* font, SkFontIdentity* fontId) const { |
| SkTScopedComPtr<IDWriteFontFace> fontFace; |
| HRM(font->CreateFontFace(&fontFace), "Could not create font face."); |
| |
| UINT32 numFiles; |
| HR(fontFace->GetFiles(&numFiles, nullptr)); |
| if (numFiles > 1) { |
| return E_FAIL; |
| } |
| |
| // data id |
| SkTScopedComPtr<IDWriteFontFile> fontFile; |
| HR(fontFace->GetFiles(&numFiles, &fontFile)); |
| |
| SkTScopedComPtr<IDWriteFontFileLoader> fontFileLoader; |
| HR(fontFile->GetLoader(&fontFileLoader)); |
| |
| const void* refKey; |
| UINT32 refKeySize; |
| HR(fontFile->GetReferenceKey(&refKey, &refKeySize)); |
| |
| fontId->fDataId = FindOrAdd(fontFileLoader.get(), refKey, refKeySize); |
| |
| // index |
| fontId->fTtcIndex = fontFace->GetIndex(); |
| |
| // style |
| fontId->fFontStyle = get_style(font); |
| return S_OK; |
| } |
| |
| SkRemotableFontIdentitySet* getIndex(int familyIndex) const override { |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HRNM(fFontCollection->GetFontFamily(familyIndex, &fontFamily), |
| "Could not get requested family."); |
| |
| int count = fontFamily->GetFontCount(); |
| SkFontIdentity* fontIds; |
| sk_sp<SkRemotableFontIdentitySet> fontIdSet( |
| new SkRemotableFontIdentitySet(count, &fontIds)); |
| for (int fontIndex = 0; fontIndex < count; ++fontIndex) { |
| SkTScopedComPtr<IDWriteFont> font; |
| HRNM(fontFamily->GetFont(fontIndex, &font), "Could not get font."); |
| |
| HRN(FontToIdentity(font.get(), &fontIds[fontIndex])); |
| } |
| return fontIdSet.release(); |
| } |
| |
| virtual SkFontIdentity matchIndexStyle(int familyIndex, |
| const SkFontStyle& pattern) const override |
| { |
| SkFontIdentity identity = { SkFontIdentity::kInvalidDataId }; |
| |
| SkTScopedComPtr<IDWriteFontFamily> fontFamily; |
| HR_GENERAL(fFontCollection->GetFontFamily(familyIndex, &fontFamily), |
| "Could not get requested family.", |
| identity); |
| |
| const DWriteStyle dwStyle(pattern); |
| SkTScopedComPtr<IDWriteFont> font; |
| HR_GENERAL(fontFamily->GetFirstMatchingFont(dwStyle.fWeight, dwStyle.fWidth, |
| dwStyle.fSlant, &font), |
| "Could not match font in family.", |
| identity); |
| |
| HR_GENERAL(FontToIdentity(font.get(), &identity), nullptr, identity); |
| |
| return identity; |
| } |
| |
| static HRESULT getDefaultFontFamilyName(SkSMallocWCHAR* name) { |
| NONCLIENTMETRICSW metrics; |
| metrics.cbSize = sizeof(metrics); |
| if (0 == SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, |
| sizeof(metrics), |
| &metrics, |
| 0)) { |
| return E_UNEXPECTED; |
| } |
| |
| size_t len = wcsnlen_s(metrics.lfMessageFont.lfFaceName, LF_FACESIZE) + 1; |
| if (0 != wcsncpy_s(name->reset(len), len, metrics.lfMessageFont.lfFaceName, _TRUNCATE)) { |
| return E_UNEXPECTED; |
| } |
| |
| return S_OK; |
| } |
| |
| SkRemotableFontIdentitySet* matchName(const char familyName[]) const override { |
| SkSMallocWCHAR dwFamilyName; |
| if (nullptr == familyName) { |
| HR_GENERAL(getDefaultFontFamilyName(&dwFamilyName), |
| nullptr, SkRemotableFontIdentitySet::NewEmpty()); |
| } else { |
| HR_GENERAL(sk_cstring_to_wchar(familyName, &dwFamilyName), |
| nullptr, SkRemotableFontIdentitySet::NewEmpty()); |
| } |
| |
| UINT32 index; |
| BOOL exists; |
| HR_GENERAL(fFontCollection->FindFamilyName(dwFamilyName.get(), &index, &exists), |
| "Failed while finding family by name.", |
| SkRemotableFontIdentitySet::NewEmpty()); |
| if (!exists) { |
| return SkRemotableFontIdentitySet::NewEmpty(); |
| } |
| |
| return this->getIndex(index); |
| } |
| |
| virtual SkFontIdentity matchNameStyle(const char familyName[], |
| const SkFontStyle& style) const override |
| { |
| SkFontIdentity identity = { SkFontIdentity::kInvalidDataId }; |
| |
| SkSMallocWCHAR dwFamilyName; |
| if (nullptr == familyName) { |
| HR_GENERAL(getDefaultFontFamilyName(&dwFamilyName), nullptr, identity); |
| } else { |
| HR_GENERAL(sk_cstring_to_wchar(familyName, &dwFamilyName), nullptr, identity); |
| } |
| |
| UINT32 index; |
| BOOL exists; |
| HR_GENERAL(fFontCollection->FindFamilyName(dwFamilyName.get(), &index, &exists), |
| "Failed while finding family by name.", |
| identity); |
| if (!exists) { |
| return identity; |
| } |
| |
| return this->matchIndexStyle(index, style); |
| } |
| |
| class FontFallbackRenderer : public IDWriteTextRenderer { |
| public: |
| FontFallbackRenderer(const SkRemotableFontMgr_DirectWrite* outer, UINT32 character) |
| : fRefCount(1), fOuter(SkSafeRef(outer)), fCharacter(character) { |
| fIdentity.fDataId = SkFontIdentity::kInvalidDataId; |
| } |
| |
| virtual ~FontFallbackRenderer() { } |
| |
| // IDWriteTextRenderer methods |
| virtual HRESULT STDMETHODCALLTYPE DrawGlyphRun( |
| void* clientDrawingContext, |
| FLOAT baselineOriginX, |
| FLOAT baselineOriginY, |
| DWRITE_MEASURING_MODE measuringMode, |
| DWRITE_GLYPH_RUN const* glyphRun, |
| DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, |
| IUnknown* clientDrawingEffect) override |
| { |
| SkTScopedComPtr<IDWriteFont> font; |
| HRM(fOuter->fFontCollection->GetFontFromFontFace(glyphRun->fontFace, &font), |
| "Could not get font from font face."); |
| |
| // It is possible that the font passed does not actually have the requested character, |
| // due to no font being found and getting the fallback font. |
| // Check that the font actually contains the requested character. |
| BOOL exists; |
| HRM(font->HasCharacter(fCharacter, &exists), "Could not find character."); |
| |
| if (exists) { |
| HR(fOuter->FontToIdentity(font.get(), &fIdentity)); |
| } |
| |
| return S_OK; |
| } |
| |
| virtual HRESULT STDMETHODCALLTYPE DrawUnderline( |
| void* clientDrawingContext, |
| FLOAT baselineOriginX, |
| FLOAT baselineOriginY, |
| DWRITE_UNDERLINE const* underline, |
| IUnknown* clientDrawingEffect) override |
| { return E_NOTIMPL; } |
| |
| virtual HRESULT STDMETHODCALLTYPE DrawStrikethrough( |
| void* clientDrawingContext, |
| FLOAT baselineOriginX, |
| FLOAT baselineOriginY, |
| DWRITE_STRIKETHROUGH const* strikethrough, |
| IUnknown* clientDrawingEffect) override |
| { return E_NOTIMPL; } |
| |
| virtual HRESULT STDMETHODCALLTYPE DrawInlineObject( |
| void* clientDrawingContext, |
| FLOAT originX, |
| FLOAT originY, |
| IDWriteInlineObject* inlineObject, |
| BOOL isSideways, |
| BOOL isRightToLeft, |
| IUnknown* clientDrawingEffect) override |
| { return E_NOTIMPL; } |
| |
| // IDWritePixelSnapping methods |
| virtual HRESULT STDMETHODCALLTYPE IsPixelSnappingDisabled( |
| void* clientDrawingContext, |
| BOOL* isDisabled) override |
| { |
| *isDisabled = FALSE; |
| return S_OK; |
| } |
| |
| virtual HRESULT STDMETHODCALLTYPE GetCurrentTransform( |
| void* clientDrawingContext, |
| DWRITE_MATRIX* transform) override |
| { |
| const DWRITE_MATRIX ident = {1.0, 0.0, 0.0, 1.0, 0.0, 0.0}; |
| *transform = ident; |
| return S_OK; |
| } |
| |
| virtual HRESULT STDMETHODCALLTYPE GetPixelsPerDip( |
| void* clientDrawingContext, |
| FLOAT* pixelsPerDip) override |
| { |
| *pixelsPerDip = 1.0f; |
| return S_OK; |
| } |
| |
| // IUnknown methods |
| ULONG STDMETHODCALLTYPE AddRef() override { |
| return InterlockedIncrement(&fRefCount); |
| } |
| |
| ULONG STDMETHODCALLTYPE Release() override { |
| ULONG newCount = InterlockedDecrement(&fRefCount); |
| if (0 == newCount) { |
| delete this; |
| } |
| return newCount; |
| } |
| |
| virtual HRESULT STDMETHODCALLTYPE QueryInterface( |
| IID const& riid, void** ppvObject) override |
| { |
| if (__uuidof(IUnknown) == riid || |
| __uuidof(IDWritePixelSnapping) == riid || |
| __uuidof(IDWriteTextRenderer) == riid) |
| { |
| *ppvObject = this; |
| this->AddRef(); |
| return S_OK; |
| } |
| *ppvObject = nullptr; |
| return E_FAIL; |
| } |
| |
| const SkFontIdentity FallbackIdentity() { return fIdentity; } |
| |
| protected: |
| ULONG fRefCount; |
| sk_sp<const SkRemotableFontMgr_DirectWrite> fOuter; |
| UINT32 fCharacter; |
| SkFontIdentity fIdentity; |
| }; |
| |
| virtual SkFontIdentity matchNameStyleCharacter(const char familyName[], |
| const SkFontStyle& pattern, |
| const char* bcp47[], int bcp47Count, |
| SkUnichar character) const override |
| { |
| SkFontIdentity identity = { SkFontIdentity::kInvalidDataId }; |
| |
| IDWriteFactory* dwFactory = sk_get_dwrite_factory(); |
| if (nullptr == dwFactory) { |
| return identity; |
| } |
| |
| // TODO: use IDWriteFactory2::GetSystemFontFallback when available. |
| |
| const DWriteStyle dwStyle(pattern); |
| |
| SkSMallocWCHAR dwFamilyName; |
| if (nullptr == familyName) { |
| HR_GENERAL(getDefaultFontFamilyName(&dwFamilyName), nullptr, identity); |
| } else { |
| HR_GENERAL(sk_cstring_to_wchar(familyName, &dwFamilyName), nullptr, identity); |
| } |
| |
| const SkSMallocWCHAR* dwBcp47; |
| SkSMallocWCHAR dwBcp47Local; |
| if (bcp47Count < 1) { |
| dwBcp47 = &fLocaleName; |
| } else { |
| //TODO: support fallback stack. |
| HR_GENERAL(sk_cstring_to_wchar(bcp47[bcp47Count-1], &dwBcp47Local), nullptr, identity); |
| dwBcp47 = &dwBcp47Local; |
| } |
| |
| SkTScopedComPtr<IDWriteTextFormat> fallbackFormat; |
| HR_GENERAL(dwFactory->CreateTextFormat(dwFamilyName, |
| fFontCollection.get(), |
| dwStyle.fWeight, |
| dwStyle.fSlant, |
| dwStyle.fWidth, |
| 72.0f, |
| *dwBcp47, |
| &fallbackFormat), |
| "Could not create text format.", |
| identity); |
| |
| WCHAR str[16]; |
| UINT32 strLen = static_cast<UINT32>( |
| SkUTF::ToUTF16(character, reinterpret_cast<uint16_t*>(str))); |
| SkTScopedComPtr<IDWriteTextLayout> fallbackLayout; |
| HR_GENERAL(dwFactory->CreateTextLayout(str, strLen, fallbackFormat.get(), |
| 200.0f, 200.0f, |
| &fallbackLayout), |
| "Could not create text layout.", |
| identity); |
| |
| SkTScopedComPtr<FontFallbackRenderer> fontFallbackRenderer( |
| new FontFallbackRenderer(this, character)); |
| |
| HR_GENERAL(fallbackLayout->Draw(nullptr, fontFallbackRenderer.get(), 50.0f, 50.0f), |
| "Could not draw layout with renderer.", |
| identity); |
| |
| return fontFallbackRenderer->FallbackIdentity(); |
| } |
| |
| SkStreamAsset* getData(int dataId) const override { |
| SkAutoMutexAcquire ama(fDataIdCacheMutex); |
| if (dataId >= fDataIdCache.count()) { |
| return nullptr; |
| } |
| const DataId& id = fDataIdCache[dataId]; |
| |
| SkTScopedComPtr<IDWriteFontFileLoader> loader; |
| HRNM(id.fLoader->QueryInterface(&loader), "QuerryInterface IDWriteFontFileLoader failed"); |
| |
| SkTScopedComPtr<IDWriteFontFileStream> fontFileStream; |
| HRNM(loader->CreateStreamFromKey(id.fKey, id.fKeySize, &fontFileStream), |
| "Could not create font file stream."); |
| |
| return new SkDWriteFontFileStream(fontFileStream.get()); |
| } |
| |
| private: |
| SkTScopedComPtr<IDWriteFontCollection> fFontCollection; |
| SkSMallocWCHAR fLocaleName; |
| |
| typedef SkRemotableFontMgr INHERITED; |
| }; |
| |
| SkRemotableFontMgr* SkRemotableFontMgr_New_DirectWrite() { |
| IDWriteFactory* factory = sk_get_dwrite_factory(); |
| if (nullptr == factory) { |
| return nullptr; |
| } |
| |
| SkTScopedComPtr<IDWriteFontCollection> sysFontCollection; |
| HRNM(factory->GetSystemFontCollection(&sysFontCollection, FALSE), |
| "Could not get system font collection."); |
| |
| WCHAR localeNameStorage[LOCALE_NAME_MAX_LENGTH]; |
| WCHAR* localeName = nullptr; |
| int localeNameLen = 0; |
| |
| // Dynamically load GetUserDefaultLocaleName function, as it is not available on XP. |
| SkGetUserDefaultLocaleNameProc getUserDefaultLocaleNameProc = nullptr; |
| HRESULT hr = SkGetGetUserDefaultLocaleNameProc(&getUserDefaultLocaleNameProc); |
| if (nullptr == getUserDefaultLocaleNameProc) { |
| SK_TRACEHR(hr, "Could not get GetUserDefaultLocaleName."); |
| } else { |
| localeNameLen = getUserDefaultLocaleNameProc(localeNameStorage, LOCALE_NAME_MAX_LENGTH); |
| if (localeNameLen) { |
| localeName = localeNameStorage; |
| }; |
| } |
| |
| return new SkRemotableFontMgr_DirectWrite(sysFontCollection.get(), localeName, localeNameLen); |
| } |
| #endif//defined(SK_BUILD_FOR_WIN) |
