| /* |
| * 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 "src/utils/win/SkDWriteNTDDI_VERSION.h" |
| |
| #include "include/core/SkTypes.h" |
| #if defined(SK_BUILD_FOR_WIN) |
| |
| #include "src/base/SkLeanWindows.h" |
| |
| // SkLeanWindows will include Windows.h, which will pull in all of the GDI defines. |
| // GDI #defines GetGlyphIndices to GetGlyphIndicesA or GetGlyphIndicesW, but |
| // IDWriteFontFace has a method called GetGlyphIndices. Since this file does |
| // not use GDI, undefing GetGlyphIndices makes things less confusing. |
| #undef GetGlyphIndices |
| |
| #include "include/core/SkData.h" |
| #include "include/private/base/SkTo.h" |
| #include "src/core/SkFontDescriptor.h" |
| #include "src/core/SkFontStream.h" |
| #include "src/core/SkScalerContext.h" |
| #include "src/ports/SkScalerContext_win_dw.h" |
| #include "src/ports/SkTypeface_win_dw.h" |
| #include "src/sfnt/SkOTTable_OS_2.h" |
| #include "src/sfnt/SkOTTable_fvar.h" |
| #include "src/sfnt/SkOTTable_head.h" |
| #include "src/sfnt/SkOTTable_hhea.h" |
| #include "src/sfnt/SkOTTable_post.h" |
| #include "src/sfnt/SkOTUtils.h" |
| #include "src/utils/win/SkDWrite.h" |
| #include "src/utils/win/SkDWriteFontFileStream.h" |
| |
| using namespace skia_private; |
| |
| HRESULT DWriteFontTypeface::initializePalette() { |
| if (!fIsColorFont) { |
| return S_OK; |
| } |
| |
| UINT32 dwPaletteCount = fDWriteFontFace2->GetColorPaletteCount(); |
| if (dwPaletteCount == 0) { |
| return S_OK; |
| } |
| |
| // Treat out of range palette index values as 0. Still apply overrides. |
| // https://www.w3.org/TR/css-fonts-4/#base-palette-desc |
| UINT32 basePaletteIndex = 0; |
| if (SkTFitsIn<UINT32>(fRequestedPalette.index) && |
| SkTo<UINT32>(fRequestedPalette.index) < dwPaletteCount) |
| { |
| basePaletteIndex = fRequestedPalette.index; |
| } |
| |
| UINT32 dwPaletteEntryCount = fDWriteFontFace2->GetPaletteEntryCount(); |
| AutoSTMalloc<8, DWRITE_COLOR_F> dwPaletteEntry(dwPaletteEntryCount); |
| HRM(fDWriteFontFace2->GetPaletteEntries(basePaletteIndex, |
| 0, dwPaletteEntryCount, |
| dwPaletteEntry), |
| "Could not retrieve palette entries."); |
| |
| fPalette.reset(new SkColor[dwPaletteEntryCount]); |
| for (UINT32 i = 0; i < dwPaletteEntryCount; ++i) { |
| fPalette[i] = SkColorSetARGB(sk_float_round2int(dwPaletteEntry[i].a * 255), |
| sk_float_round2int(dwPaletteEntry[i].r * 255), |
| sk_float_round2int(dwPaletteEntry[i].g * 255), |
| sk_float_round2int(dwPaletteEntry[i].b * 255)); |
| } |
| |
| for (int i = 0; i < fRequestedPalette.overrideCount; ++i) { |
| const SkFontArguments::Palette::Override& paletteOverride = fRequestedPalette.overrides[i]; |
| if (SkTFitsIn<UINT32>(paletteOverride.index) && |
| SkTo<UINT32>(paletteOverride.index) < dwPaletteEntryCount) |
| { |
| fPalette[paletteOverride.index] = paletteOverride.color; |
| } |
| } |
| fPaletteEntryCount = dwPaletteEntryCount; |
| |
| return S_OK; |
| } |
| |
| DWriteFontTypeface::DWriteFontTypeface(const SkFontStyle& style, |
| IDWriteFactory* factory, |
| IDWriteFontFace* fontFace, |
| IDWriteFont* font, |
| IDWriteFontFamily* fontFamily, |
| sk_sp<Loaders> loaders, |
| const SkFontArguments::Palette& palette) |
| : SkTypeface(style, false) |
| , fFactory(SkRefComPtr(factory)) |
| , fDWriteFontFamily(SkRefComPtr(fontFamily)) |
| , fDWriteFont(SkRefComPtr(font)) |
| , fDWriteFontFace(SkRefComPtr(fontFace)) |
| , fRequestedPaletteEntryOverrides(palette.overrideCount |
| ? (SkFontArguments::Palette::Override*)memcpy( |
| new SkFontArguments::Palette::Override[palette.overrideCount], |
| palette.overrides, |
| palette.overrideCount * sizeof(palette.overrides[0])) |
| : nullptr) |
| , fRequestedPalette{palette.index, |
| fRequestedPaletteEntryOverrides.get(), palette.overrideCount } |
| , fPaletteEntryCount(0) |
| , fLoaders(std::move(loaders)) |
| { |
| if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace1))) { |
| // IUnknown::QueryInterface states that if it fails, punk will be set to nullptr. |
| // http://blogs.msdn.com/b/oldnewthing/archive/2004/03/26/96777.aspx |
| SkASSERT_RELEASE(nullptr == fDWriteFontFace1.get()); |
| } |
| if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace2))) { |
| SkASSERT_RELEASE(nullptr == fDWriteFontFace2.get()); |
| } |
| if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace4))) { |
| SkASSERT_RELEASE(nullptr == fDWriteFontFace4.get()); |
| } |
| if (!SUCCEEDED(fFactory->QueryInterface(&fFactory2))) { |
| SkASSERT_RELEASE(nullptr == fFactory2.get()); |
| } |
| |
| if (fDWriteFontFace1 && fDWriteFontFace1->IsMonospacedFont()) { |
| this->setIsFixedPitch(true); |
| } |
| |
| fIsColorFont = fFactory2 && fDWriteFontFace2 && fDWriteFontFace2->IsColorFont(); |
| this->initializePalette(); |
| } |
| |
| |
| DWriteFontTypeface::Loaders::~Loaders() { |
| // Don't return if any fail, just keep going to free up as much as possible. |
| HRESULT hr; |
| |
| hr = fFactory->UnregisterFontCollectionLoader(fDWriteFontCollectionLoader.get()); |
| if (FAILED(hr)) { |
| SK_TRACEHR(hr, "FontCollectionLoader"); |
| } |
| |
| hr = fFactory->UnregisterFontFileLoader(fDWriteFontFileLoader.get()); |
| if (FAILED(hr)) { |
| SK_TRACEHR(hr, "FontFileLoader"); |
| } |
| } |
| |
| void DWriteFontTypeface::onGetFamilyName(SkString* familyName) const { |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| HRV(fDWriteFontFamily->GetFamilyNames(&familyNames)); |
| |
| sk_get_locale_string(familyNames.get(), nullptr/*fMgr->fLocaleName.get()*/, familyName); |
| } |
| |
| bool DWriteFontTypeface::onGetPostScriptName(SkString* skPostScriptName) const { |
| SkString localSkPostScriptName; |
| SkTScopedComPtr<IDWriteLocalizedStrings> postScriptNames; |
| BOOL exists = FALSE; |
| if (FAILED(fDWriteFont->GetInformationalStrings( |
| DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME, |
| &postScriptNames, |
| &exists)) || |
| !exists || |
| FAILED(sk_get_locale_string(postScriptNames.get(), nullptr, &localSkPostScriptName))) |
| { |
| return false; |
| } |
| if (skPostScriptName) { |
| *skPostScriptName = localSkPostScriptName; |
| } |
| return true; |
| } |
| |
| void DWriteFontTypeface::onGetFontDescriptor(SkFontDescriptor* desc, |
| bool* isLocalStream) const { |
| // Get the family name. |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| HRV(fDWriteFontFamily->GetFamilyNames(&familyNames)); |
| |
| SkString utf8FamilyName; |
| sk_get_locale_string(familyNames.get(), nullptr/*fMgr->fLocaleName.get()*/, &utf8FamilyName); |
| |
| desc->setFamilyName(utf8FamilyName.c_str()); |
| desc->setStyle(this->fontStyle()); |
| |
| desc->setPaletteIndex(fRequestedPalette.index); |
| sk_careful_memcpy(desc->setPaletteEntryOverrides(fRequestedPalette.overrideCount), |
| fRequestedPalette.overrides, |
| fRequestedPalette.overrideCount * sizeof(fRequestedPalette.overrides[0])); |
| |
| *isLocalStream = SkToBool(fLoaders); |
| } |
| |
| void DWriteFontTypeface::onCharsToGlyphs(const SkUnichar* uni, int count, |
| SkGlyphID glyphs[]) const { |
| fDWriteFontFace->GetGlyphIndices((const UINT32*)uni, count, glyphs); |
| } |
| |
| int DWriteFontTypeface::onCountGlyphs() const { |
| return fDWriteFontFace->GetGlyphCount(); |
| } |
| |
| void DWriteFontTypeface::getPostScriptGlyphNames(SkString*) const {} |
| |
| 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) |
| { } |
| |
| bool next(SkTypeface::LocalizedString* localizedString) override { |
| if (fIndex >= fStrings->GetCount()) { |
| return false; |
| } |
| |
| // String |
| UINT32 stringLen; |
| HRBM(fStrings->GetStringLength(fIndex, &stringLen), "Could not get string length."); |
| |
| SkSMallocWCHAR wString(static_cast<size_t>(stringLen)+1); |
| HRBM(fStrings->GetString(fIndex, wString.get(), stringLen+1), "Could not get string."); |
| |
| HRB(sk_wchar_to_skstring(wString.get(), stringLen, &localizedString->fString)); |
| |
| // Locale |
| UINT32 localeLen; |
| HRBM(fStrings->GetLocaleNameLength(fIndex, &localeLen), "Could not get locale length."); |
| |
| SkSMallocWCHAR wLocale(static_cast<size_t>(localeLen)+1); |
| HRBM(fStrings->GetLocaleName(fIndex, wLocale.get(), localeLen+1), "Could not get locale."); |
| |
| HRB(sk_wchar_to_skstring(wLocale.get(), localeLen, &localizedString->fLanguage)); |
| |
| ++fIndex; |
| return true; |
| } |
| |
| private: |
| UINT32 fIndex; |
| SkTScopedComPtr<IDWriteLocalizedStrings> fStrings; |
| }; |
| |
| SkTypeface::LocalizedStrings* DWriteFontTypeface::onCreateFamilyNameIterator() const { |
| sk_sp<SkTypeface::LocalizedStrings> nameIter = |
| SkOTUtils::LocalizedStrings_NameTable::MakeForFamilyNames(*this); |
| if (!nameIter) { |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| HRNM(fDWriteFontFamily->GetFamilyNames(&familyNames), "Could not obtain family names."); |
| nameIter = sk_make_sp<LocalizedStrings_IDWriteLocalizedStrings>(familyNames.release()); |
| } |
| return nameIter.release(); |
| } |
| |
| bool DWriteFontTypeface::onGlyphMaskNeedsCurrentColor() const { |
| return fDWriteFontFace2 && fDWriteFontFace2->GetColorPaletteCount() > 0; |
| } |
| |
| int DWriteFontTypeface::onGetVariationDesignPosition( |
| SkFontArguments::VariationPosition::Coordinate coordinates[], int coordinateCount) const |
| { |
| |
| #if defined(NTDDI_WIN10_RS3) && NTDDI_VERSION >= NTDDI_WIN10_RS3 |
| |
| SkTScopedComPtr<IDWriteFontFace5> fontFace5; |
| if (FAILED(fDWriteFontFace->QueryInterface(&fontFace5))) { |
| return -1; |
| } |
| |
| // Return 0 if the font is not variable font. |
| if (!fontFace5->HasVariations()) { |
| return 0; |
| } |
| |
| UINT32 fontAxisCount = fontFace5->GetFontAxisValueCount(); |
| SkTScopedComPtr<IDWriteFontResource> fontResource; |
| HR_GENERAL(fontFace5->GetFontResource(&fontResource), nullptr, -1); |
| UINT32 variableAxisCount = 0; |
| for (UINT32 i = 0; i < fontAxisCount; ++i) { |
| if (fontResource->GetFontAxisAttributes(i) & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE) { |
| ++variableAxisCount; |
| } |
| } |
| |
| if (!coordinates || coordinateCount < 0 || (unsigned)coordinateCount < variableAxisCount) { |
| return SkTo<int>(variableAxisCount); |
| } |
| |
| AutoSTMalloc<8, DWRITE_FONT_AXIS_VALUE> fontAxisValue(fontAxisCount); |
| HR_GENERAL(fontFace5->GetFontAxisValues(fontAxisValue.get(), fontAxisCount), nullptr, -1); |
| UINT32 coordIndex = 0; |
| for (UINT32 axisIndex = 0; axisIndex < fontAxisCount; ++axisIndex) { |
| if (fontResource->GetFontAxisAttributes(axisIndex) & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE) { |
| coordinates[coordIndex].axis = SkEndian_SwapBE32(fontAxisValue[axisIndex].axisTag); |
| coordinates[coordIndex].value = fontAxisValue[axisIndex].value; |
| ++coordIndex; |
| } |
| } |
| |
| SkASSERT(coordIndex == variableAxisCount); |
| return SkTo<int>(variableAxisCount); |
| |
| #else |
| return -1; |
| #endif |
| } |
| |
| int DWriteFontTypeface::onGetVariationDesignParameters( |
| SkFontParameters::Variation::Axis parameters[], int parameterCount) const |
| { |
| |
| #if defined(NTDDI_WIN10_RS3) && NTDDI_VERSION >= NTDDI_WIN10_RS3 |
| |
| SkTScopedComPtr<IDWriteFontFace5> fontFace5; |
| if (FAILED(fDWriteFontFace->QueryInterface(&fontFace5))) { |
| return -1; |
| } |
| |
| // Return 0 if the font is not variable font. |
| if (!fontFace5->HasVariations()) { |
| return 0; |
| } |
| |
| UINT32 fontAxisCount = fontFace5->GetFontAxisValueCount(); |
| SkTScopedComPtr<IDWriteFontResource> fontResource; |
| HR_GENERAL(fontFace5->GetFontResource(&fontResource), nullptr, -1); |
| int variableAxisCount = 0; |
| for (UINT32 i = 0; i < fontAxisCount; ++i) { |
| if (fontResource->GetFontAxisAttributes(i) & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE) { |
| variableAxisCount++; |
| } |
| } |
| |
| if (!parameters || parameterCount < variableAxisCount) { |
| return variableAxisCount; |
| } |
| |
| AutoSTMalloc<8, DWRITE_FONT_AXIS_RANGE> fontAxisRange(fontAxisCount); |
| HR_GENERAL(fontResource->GetFontAxisRanges(fontAxisRange.get(), fontAxisCount), nullptr, -1); |
| AutoSTMalloc<8, DWRITE_FONT_AXIS_VALUE> fontAxisDefaultValue(fontAxisCount); |
| HR_GENERAL(fontResource->GetDefaultFontAxisValues(fontAxisDefaultValue.get(), fontAxisCount), |
| nullptr, -1); |
| UINT32 coordIndex = 0; |
| |
| for (UINT32 axisIndex = 0; axisIndex < fontAxisCount; ++axisIndex) { |
| if (fontResource->GetFontAxisAttributes(axisIndex) & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE) { |
| parameters[coordIndex].tag = SkEndian_SwapBE32(fontAxisDefaultValue[axisIndex].axisTag); |
| parameters[coordIndex].min = fontAxisRange[axisIndex].minValue; |
| parameters[coordIndex].def = fontAxisDefaultValue[axisIndex].value; |
| parameters[coordIndex].max = fontAxisRange[axisIndex].maxValue; |
| parameters[coordIndex].setHidden(fontResource->GetFontAxisAttributes(axisIndex) & |
| DWRITE_FONT_AXIS_ATTRIBUTES_HIDDEN); |
| ++coordIndex; |
| } |
| } |
| |
| return variableAxisCount; |
| |
| #else |
| return -1; |
| #endif |
| } |
| |
| 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; |
| std::unique_ptr<SkStreamAsset> stream = this->openStream(&ttcIndex); |
| return stream.get() ? SkFontStream::GetTableTags(stream.get(), 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 = std::min(length, table.fSize - offset); |
| if (data) { |
| memcpy(data, table.fData + offset, size); |
| } |
| |
| return size; |
| } |
| |
| sk_sp<SkData> DWriteFontTypeface::onCopyTableData(SkFontTableTag tag) const { |
| const uint8_t* data; |
| UINT32 size; |
| void* lock; |
| BOOL exists; |
| fDWriteFontFace->TryGetFontTable(SkEndian_SwapBE32(tag), |
| reinterpret_cast<const void **>(&data), &size, &lock, &exists); |
| if (!exists) { |
| return nullptr; |
| } |
| struct Context { |
| Context(void* lock, IDWriteFontFace* face) : fLock(lock), fFontFace(SkRefComPtr(face)) {} |
| ~Context() { fFontFace->ReleaseFontTable(fLock); } |
| void* fLock; |
| SkTScopedComPtr<IDWriteFontFace> fFontFace; |
| }; |
| return SkData::MakeWithProc(data, size, |
| [](const void*, void* ctx) { delete (Context*)ctx; }, |
| new Context(lock, fDWriteFontFace.get())); |
| } |
| |
| sk_sp<SkTypeface> DWriteFontTypeface::onMakeClone(const SkFontArguments& args) const { |
| // Skip if the current face index does not match the ttcIndex |
| if (fDWriteFontFace->GetIndex() != SkTo<UINT32>(args.getCollectionIndex())) { |
| return sk_ref_sp(this); |
| } |
| |
| #if defined(NTDDI_WIN10_RS3) && NTDDI_VERSION >= NTDDI_WIN10_RS3 |
| |
| SkTScopedComPtr<IDWriteFontFace5> fontFace5; |
| |
| if (SUCCEEDED(fDWriteFontFace->QueryInterface(&fontFace5)) && fontFace5->HasVariations()) { |
| UINT32 fontAxisCount = fontFace5->GetFontAxisValueCount(); |
| UINT32 argsCoordCount = args.getVariationDesignPosition().coordinateCount; |
| AutoSTMalloc<8, DWRITE_FONT_AXIS_VALUE> fontAxisValue(fontAxisCount); |
| HRN(fontFace5->GetFontAxisValues(fontAxisValue.get(), fontAxisCount)); |
| |
| for (UINT32 fontIndex = 0; fontIndex < fontAxisCount; ++fontIndex) { |
| for (UINT32 argsIndex = 0; argsIndex < argsCoordCount; ++argsIndex) { |
| if (SkEndian_SwapBE32(fontAxisValue[fontIndex].axisTag) == |
| args.getVariationDesignPosition().coordinates[argsIndex].axis) { |
| fontAxisValue[fontIndex].value = |
| args.getVariationDesignPosition().coordinates[argsIndex].value; |
| } |
| } |
| } |
| SkTScopedComPtr<IDWriteFontResource> fontResource; |
| HRN(fontFace5->GetFontResource(&fontResource)); |
| SkTScopedComPtr<IDWriteFontFace5> newFontFace5; |
| HRN(fontResource->CreateFontFace(fDWriteFont->GetSimulations(), |
| fontAxisValue.get(), |
| fontAxisCount, |
| &newFontFace5)); |
| |
| SkTScopedComPtr<IDWriteFontFace> newFontFace; |
| HRN(newFontFace5->QueryInterface(&newFontFace)); |
| return DWriteFontTypeface::Make(fFactory.get(), |
| newFontFace.get(), |
| fDWriteFont.get(), |
| fDWriteFontFamily.get(), |
| fLoaders, |
| args.getPalette()); |
| } |
| |
| #endif |
| |
| // If the palette args have changed, a new font will need to be created. |
| if (args.getPalette().index != fRequestedPalette.index || |
| args.getPalette().overrideCount != fRequestedPalette.overrideCount || |
| memcmp(args.getPalette().overrides, fRequestedPalette.overrides, |
| fRequestedPalette.overrideCount * sizeof(fRequestedPalette.overrides[0]))) |
| { |
| return DWriteFontTypeface::Make(fFactory.get(), |
| fDWriteFontFace.get(), |
| fDWriteFont.get(), |
| fDWriteFontFamily.get(), |
| fLoaders, |
| args.getPalette()); |
| } |
| |
| return sk_ref_sp(this); |
| } |
| |
| std::unique_ptr<SkStreamAsset> DWriteFontTypeface::onOpenStream(int* ttcIndex) const { |
| *ttcIndex = fDWriteFontFace->GetIndex(); |
| |
| UINT32 numFiles = 0; |
| HRNM(fDWriteFontFace->GetFiles(&numFiles, nullptr), |
| "Could not get number of font files."); |
| if (numFiles != 1) { |
| return nullptr; |
| } |
| |
| 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 std::unique_ptr<SkStreamAsset>(new SkDWriteFontFileStream(fontFileStream.get())); |
| } |
| |
| std::unique_ptr<SkScalerContext> DWriteFontTypeface::onCreateScalerContext( |
| const SkScalerContextEffects& effects, const SkDescriptor* desc) const |
| { |
| return std::make_unique<SkScalerContext_DW>( |
| sk_ref_sp(const_cast<DWriteFontTypeface*>(this)), effects, desc); |
| } |
| |
| void DWriteFontTypeface::onFilterRec(SkScalerContextRec* rec) const { |
| if (rec->fFlags & SkScalerContext::kLCD_Vertical_Flag) { |
| rec->fMaskFormat = SkMask::kA8_Format; |
| rec->fFlags |= SkScalerContext::kGenA8FromLCD_Flag; |
| } |
| |
| unsigned flagsWeDontSupport = SkScalerContext::kForceAutohinting_Flag | |
| SkScalerContext::kEmbolden_Flag | |
| SkScalerContext::kLCD_Vertical_Flag; |
| rec->fFlags &= ~flagsWeDontSupport; |
| |
| SkFontHinting h = rec->getHinting(); |
| // DirectWrite2 allows for hinting to be turned off. Force everything else to normal. |
| if (h != SkFontHinting::kNone || !fFactory2 || !fDWriteFontFace2) { |
| h = SkFontHinting::kNormal; |
| } |
| rec->setHinting(h); |
| |
| #if defined(SK_FONT_HOST_USE_SYSTEM_SETTINGS) |
| IDWriteFactory* factory = sk_get_dwrite_factory(); |
| if (factory != nullptr) { |
| 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 |
| |
| static void glyph_to_unicode_map(IDWriteFontFace* fontFace, DWRITE_UNICODE_RANGE range, |
| UINT32* remainingGlyphCount, UINT32 numGlyphs, |
| SkUnichar* glyphToUnicode) |
| { |
| constexpr const int batchSize = 128; |
| UINT32 codepoints[batchSize]; |
| UINT16 glyphs[batchSize]; |
| for (UINT32 c = range.first; c <= range.last && *remainingGlyphCount != 0; c += batchSize) { |
| UINT32 numBatchedCodePoints = std::min<UINT32>(range.last - c + 1, batchSize); |
| for (UINT32 i = 0; i < numBatchedCodePoints; ++i) { |
| codepoints[i] = c + i; |
| } |
| HRVM(fontFace->GetGlyphIndices(codepoints, numBatchedCodePoints, glyphs), |
| "Failed to get glyph indexes."); |
| for (UINT32 i = 0; i < numBatchedCodePoints; ++i) { |
| UINT16 glyph = glyphs[i]; |
| // Intermittent DW bug on Windows 10. See crbug.com/470146. |
| if (glyph >= numGlyphs) { |
| return; |
| } |
| if (0 < glyph && glyphToUnicode[glyph] == 0) { |
| glyphToUnicode[glyph] = c + i; // Always use lowest-index unichar. |
| --*remainingGlyphCount; |
| } |
| } |
| } |
| } |
| |
| void DWriteFontTypeface::getGlyphToUnicodeMap(SkUnichar* glyphToUnicode) const { |
| IDWriteFontFace* face = fDWriteFontFace.get(); |
| UINT32 numGlyphs = face->GetGlyphCount(); |
| sk_bzero(glyphToUnicode, sizeof(SkUnichar) * numGlyphs); |
| UINT32 remainingGlyphCount = numGlyphs; |
| |
| if (fDWriteFontFace1) { |
| IDWriteFontFace1* face1 = fDWriteFontFace1.get(); |
| UINT32 numRanges = 0; |
| HRESULT hr = face1->GetUnicodeRanges(0, nullptr, &numRanges); |
| if (hr != E_NOT_SUFFICIENT_BUFFER && FAILED(hr)) { |
| HRVM(hr, "Failed to get number of ranges."); |
| } |
| std::unique_ptr<DWRITE_UNICODE_RANGE[]> ranges(new DWRITE_UNICODE_RANGE[numRanges]); |
| HRVM(face1->GetUnicodeRanges(numRanges, ranges.get(), &numRanges), "Failed to get ranges."); |
| for (UINT32 i = 0; i < numRanges; ++i) { |
| glyph_to_unicode_map(face1, ranges[i], &remainingGlyphCount, numGlyphs, glyphToUnicode); |
| } |
| } else { |
| glyph_to_unicode_map(face, {0, 0x10FFFF}, &remainingGlyphCount, numGlyphs, glyphToUnicode); |
| } |
| } |
| |
| std::unique_ptr<SkAdvancedTypefaceMetrics> DWriteFontTypeface::onGetAdvancedMetrics() const { |
| |
| std::unique_ptr<SkAdvancedTypefaceMetrics> info(nullptr); |
| |
| DWRITE_FONT_METRICS dwfm; |
| fDWriteFontFace->GetMetrics(&dwfm); |
| |
| info.reset(new SkAdvancedTypefaceMetrics); |
| |
| info->fAscent = SkToS16(dwfm.ascent); |
| info->fDescent = SkToS16(dwfm.descent); |
| info->fCapHeight = SkToS16(dwfm.capHeight); |
| |
| { |
| SkTScopedComPtr<IDWriteLocalizedStrings> postScriptNames; |
| BOOL exists = FALSE; |
| if (FAILED(fDWriteFont->GetInformationalStrings( |
| DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME, |
| &postScriptNames, |
| &exists)) || |
| !exists || |
| FAILED(sk_get_locale_string(postScriptNames.get(), nullptr, &info->fPostScriptName))) |
| { |
| SkDEBUGF("Unable to get postscript name for typeface %p\n", this); |
| } |
| } |
| |
| // SkAdvancedTypefaceMetrics::fFontName must actually be a family name. |
| SkTScopedComPtr<IDWriteLocalizedStrings> familyNames; |
| if (FAILED(fDWriteFontFamily->GetFamilyNames(&familyNames)) || |
| FAILED(sk_get_locale_string(familyNames.get(), nullptr, &info->fFontName))) |
| { |
| SkDEBUGF("Unable to get family name for typeface 0x%p\n", this); |
| } |
| if (info->fPostScriptName.isEmpty()) { |
| info->fPostScriptName = info->fFontName; |
| } |
| |
| DWRITE_FONT_FACE_TYPE fontType = fDWriteFontFace->GetType(); |
| if (fontType != DWRITE_FONT_FACE_TYPE_TRUETYPE && |
| fontType != DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION) |
| { |
| return info; |
| } |
| |
| // Simulated fonts aren't really TrueType fonts. |
| if (fDWriteFontFace->GetSimulations() == DWRITE_FONT_SIMULATIONS_NONE) { |
| info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; |
| } |
| |
| 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) { |
| return info; |
| } |
| |
| SkOTUtils::SetAdvancedTypefaceFlags(os2Table->version.v4.fsType, info.get()); |
| |
| // There are versions of DirectWrite which support named instances for system variation fonts, |
| // but no means to indicate that such a typeface is a variation. |
| AutoTDWriteTable<SkOTTableFontVariations> fvarTable(fDWriteFontFace.get()); |
| if (fvarTable.fExists) { |
| info->fFlags |= SkAdvancedTypefaceMetrics::kVariable_FontFlag; |
| } |
| |
| //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; |
| } |
| //Serif |
| using SerifStyle = SkPanose::Data::TextAndDisplay::SerifStyle; |
| SerifStyle serifStyle = os2Table->version.v0.panose.data.textAndDisplay.bSerifStyle; |
| if (SkPanose::FamilyType::TextAndDisplay == os2Table->version.v0.panose.bFamilyType) { |
| if (SerifStyle::Cove == serifStyle || |
| SerifStyle::ObtuseCove == serifStyle || |
| SerifStyle::SquareCove == serifStyle || |
| SerifStyle::ObtuseSquareCove == serifStyle || |
| SerifStyle::Square == serifStyle || |
| SerifStyle::Thin == serifStyle || |
| SerifStyle::Bone == serifStyle || |
| SerifStyle::Exaggerated == serifStyle || |
| SerifStyle::Triangle == serifStyle) |
| { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; |
| } |
| //Script |
| } else if (SkPanose::FamilyType::Script == os2Table->version.v0.panose.bFamilyType) { |
| info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; |
| } |
| |
| info->fItalicAngle = SkEndian_SwapBE32(postTable->italicAngle) >> 16; |
| |
| 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)); |
| return info; |
| } |
| #endif//defined(SK_BUILD_FOR_WIN) |
