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- /*
- * 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)
- // SkTypes 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/private/SkTo.h"
- #include "include/core/SkData.h"
- #include "src/core/SkFontDescriptor.h"
- #include "src/core/SkFontStream.h"
- #include "src/core/SkScalerContext.h"
- #include "src/core/SkUtils.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"
- void DWriteFontTypeface::onGetFamilyName(SkString* familyName) const {
- SkTScopedComPtr<IDWriteLocalizedStrings> familyNames;
- HRV(fDWriteFontFamily->GetFamilyNames(&familyNames));
- sk_get_locale_string(familyNames.get(), nullptr/*fMgr->fLocaleName.get()*/, familyName);
- }
- 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());
- *isLocalStream = SkToBool(fDWriteFontFileLoader.get());
- }
- 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(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(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();
- }
- 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);
- int variableAxisCount = 0;
- for (UINT32 i = 0; i < fontAxisCount; ++i) {
- if (fontResource->GetFontAxisAttributes(i) & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE) {
- variableAxisCount++;
- }
- }
- if (!coordinates || coordinateCount < variableAxisCount) {
- return variableAxisCount;
- }
- SkAutoSTMalloc<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;
- }
- }
- return variableAxisCount;
- #endif
- return -1;
- }
- 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;
- }
- SkAutoSTMalloc<8, DWRITE_FONT_AXIS_RANGE> fontAxisRange(fontAxisCount);
- HR_GENERAL(fontResource->GetFontAxisRanges(fontAxisRange.get(), fontAxisCount), nullptr, -1);
- SkAutoSTMalloc<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);
- }
- }
- return variableAxisCount;
- #endif
- return -1;
- }
- 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 = SkTMin(length, table.fSize - offset);
- if (data) {
- memcpy(data, table.fData + offset, size);
- }
- return size;
- }
- sk_sp<SkData> DWriteFontTypeface::onCopyTableData(SkFontTableTag tag) const {
- AutoDWriteTable table(fDWriteFontFace.get(), SkEndian_SwapBE32(tag));
- if (!table.fExists) {
- return nullptr;
- }
- return SkData::MakeWithCopy(table.fData, table.fSize);
- }
- 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;
- SkAutoSTMalloc<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(),
- fDWriteFontFileLoader.get(),
- fDWriteFontCollectionLoader.get());
- }
- #endif
- return sk_ref_sp(this);
- }
- std::unique_ptr<SkStreamAsset> DWriteFontTypeface::onOpenStream(int* ttcIndex) const {
- *ttcIndex = fDWriteFontFace->GetIndex();
- UINT32 numFiles;
- 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()));
- }
- SkScalerContext* DWriteFontTypeface::onCreateScalerContext(const SkScalerContextEffects& effects,
- const SkDescriptor* desc) const {
- return new 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
- void DWriteFontTypeface::getGlyphToUnicodeMap(SkUnichar* glyphToUnicode) const {
- unsigned glyphCount = fDWriteFontFace->GetGlyphCount();
- sk_bzero(glyphToUnicode, sizeof(SkUnichar) * glyphCount);
- IDWriteFontFace* fontFace = fDWriteFontFace.get();
- int maxGlyph = -1;
- unsigned remainingGlyphCount = glyphCount;
- for (UINT32 c = 0; c < 0x10FFFF && remainingGlyphCount != 0; ++c) {
- UINT16 glyph = 0;
- HRVM(fontFace->GetGlyphIndices(&c, 1, &glyph), "Failed to get glyph index.");
- // Intermittent DW bug on Windows 10. See crbug.com/470146.
- if (glyph >= glyphCount) {
- return;
- }
- if (0 < glyph && glyphToUnicode[glyph] == 0) {
- maxGlyph = SkTMax(static_cast<int>(glyph), maxGlyph);
- glyphToUnicode[glyph] = c; // Always use lowest-index unichar.
- --remainingGlyphCount;
- }
- }
- }
- 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::kMultiMaster_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)
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