Пример #1
0
    static void load_embedded_font(const SkTypeface_FreeType::Scanner& scanner,
                                   const uint8_t* data, size_t size, int index,
                                   SkFontMgr_Custom::Families* families)
    {
        SkAutoTDelete<SkMemoryStream> stream(new SkMemoryStream(data, size, false));

        int numFaces;
        if (!scanner.recognizedFont(stream, &numFaces)) {
            SkDebugf("---- failed to open <%d> as a font\n", index);
            return;
        }

        for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
            bool isFixedPitch;
            SkString realname;
            SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
            if (!scanner.scanFont(stream, faceIndex, &realname, &style, &isFixedPitch, nullptr)) {
                SkDebugf("---- failed to open <%d> <%d> as a font\n", index, faceIndex);
                return;
            }

            SkTypeface_Custom* tf =
                    new SkTypeface_Stream(style, isFixedPitch, true,  // system-font (cannot delete)
                                          realname, stream.release(), faceIndex);

            SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
            if (nullptr == addTo) {
                addTo = new SkFontStyleSet_Custom(realname);
                families->push_back().reset(addTo);
            }
            addTo->appendTypeface(tf);
        }
    }
Пример #2
0
    static void load_embedded_font(const SkTypeface_FreeType::Scanner& scanner,
                                   const uint8_t* data, size_t size, int index,
                                   SkFontMgr_Custom::Families* families)
    {
        auto stream = skstd::make_unique<SkMemoryStream>(data, size, false);

        int numFaces;
        if (!scanner.recognizedFont(stream.get(), &numFaces)) {
            SkDebugf("---- failed to open <%d> as a font\n", index);
            return;
        }

        for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
            bool isFixedPitch;
            SkString realname;
            SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
            if (!scanner.scanFont(stream.get(), faceIndex,
                                  &realname, &style, &isFixedPitch, nullptr))
            {
                SkDebugf("---- failed to open <%d> <%d> as a font\n", index, faceIndex);
                return;
            }

            SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
            if (nullptr == addTo) {
                addTo = new SkFontStyleSet_Custom(realname);
                families->push_back().reset(addTo);
            }
            auto data = skstd::make_unique<SkFontData>(std::move(stream), faceIndex, nullptr, 0);
            addTo->appendTypeface(sk_make_sp<SkTypeface_Stream>(std::move(data),
                                                                style, isFixedPitch,
                                                                true, realname));
        }
    }
    static void load_directory_fonts(const SkTypeface_FreeType::Scanner& scanner,
                                     const SkString& directory, const char* suffix,
                                     SkFontMgr_Custom::Families* families)
    {
        SkOSFile::Iter iter(directory.c_str(), suffix);
        SkString name;

        while (iter.next(&name, false)) {
            SkString filename(SkOSPath::Join(directory.c_str(), name.c_str()));
            SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(filename.c_str()));
            if (!stream.get()) {
                SkDebugf("---- failed to open <%s>\n", filename.c_str());
                continue;
            }

            int numFaces;
            if (!scanner.recognizedFont(stream, &numFaces)) {
                SkDebugf("---- failed to open <%s> as a font\n", filename.c_str());
                continue;
            }

            for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
                bool isFixedPitch;
                SkString realname;
                SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
                if (!scanner.scanFont(stream, faceIndex, &realname, &style, &isFixedPitch, NULL)) {
                    SkDebugf("---- failed to open <%s> <%d> as a font\n",
                             filename.c_str(), faceIndex);
                    continue;
                }

                SkTypeface_Custom* tf = SkNEW_ARGS(SkTypeface_File, (
                                                    style,
                                                    isFixedPitch,
                                                    true,  // system-font (cannot delete)
                                                    realname,
                                                    filename.c_str(),
                                                    faceIndex));

                SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
                if (NULL == addTo) {
                    addTo = new SkFontStyleSet_Custom(realname);
                    families->push_back().reset(addTo);
                }
                addTo->appendTypeface(tf);
            }
        }

        SkOSFile::Iter dirIter(directory.c_str());
        while (dirIter.next(&name, true)) {
            if (name.startsWith(".")) {
                continue;
            }
            SkString dirname(SkOSPath::Join(directory.c_str(), name.c_str()));
            load_directory_fonts(scanner, dirname, suffix, families);
        }
    }
Пример #4
0
    explicit SkFontStyleSet_Android(const FontFamily& family,
                                    const SkTypeface_FreeType::Scanner& scanner)
    {
        const SkString* cannonicalFamilyName = NULL;
        if (family.fNames.count() > 0) {
            cannonicalFamilyName = &family.fNames[0];
        }
        // TODO? make this lazy
        for (int i = 0; i < family.fFonts.count(); ++i) {
            const FontFileInfo& fontFile = family.fFonts[i];

            SkString pathName(family.fBasePath);
            pathName.append(fontFile.fFileName);

            SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(pathName.c_str()));
            if (!stream.get()) {
                SkDEBUGF(("Requested font file %s does not exist or cannot be opened.\n",
                          pathName.c_str()));
                continue;
            }

            const int ttcIndex = fontFile.fIndex;
            SkString familyName;
            SkFontStyle style;
            bool isFixedWidth;
            if (!scanner.scanFont(stream.get(), ttcIndex, &familyName, &style, &isFixedWidth)) {
                SkDEBUGF(("Requested font file %s exists, but is not a valid font.\n",
                          pathName.c_str()));
                continue;
            }

            int weight = fontFile.fWeight != 0 ? fontFile.fWeight : style.weight();
            SkFontStyle::Slant slant = style.slant();
            switch (fontFile.fStyle) {
                case FontFileInfo::Style::kAuto: slant = style.slant(); break;
                case FontFileInfo::Style::kNormal: slant = SkFontStyle::kUpright_Slant; break;
                case FontFileInfo::Style::kItalic: slant = SkFontStyle::kItalic_Slant; break;
                default: SkASSERT(false); break;
            }
            style = SkFontStyle(weight, style.width(), slant);

            const SkLanguage& lang = family.fLanguage;
            uint32_t variant = family.fVariant;
            if (kDefault_FontVariant == variant) {
                variant = kCompact_FontVariant | kElegant_FontVariant;
            }

            // The first specified family name overrides the family name found in the font.
            // TODO: SkTypeface_AndroidSystem::onCreateFamilyNameIterator should return
            // all of the specified family names in addition to the names found in the font.
            if (cannonicalFamilyName != NULL) {
                familyName = *cannonicalFamilyName;
            }

            fStyles.push_back().reset(SkNEW_ARGS(SkTypeface_AndroidSystem,
                                                 (pathName, ttcIndex,
                                                  style, isFixedWidth, familyName,
                                                  lang, variant)));
        }
    }
    sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream,
                                           const SkFontArguments& args) const override {
        using Scanner = SkTypeface_FreeType::Scanner;
        const size_t length = stream->getLength();
        if (!length) {
            return nullptr;
        }
        if (length >= 1024 * 1024 * 1024) {
            return nullptr;  // don't accept too large fonts (>= 1GB) for safety.
        }

        bool isFixedPitch;
        SkFontStyle style;
        SkString name;
        Scanner::AxisDefinitions axisDefinitions;
        if (!fScanner.scanFont(stream.get(), args.getCollectionIndex(),
                               &name, &style, &isFixedPitch, &axisDefinitions))
        {
            return nullptr;
        }

        SkAutoSTMalloc<4, SkFixed> axisValues(axisDefinitions.count());
        Scanner::computeAxisValues(axisDefinitions, args.getVariationDesignPosition(),
                                   axisValues, name);

        auto fontData = skstd::make_unique<SkFontData>(std::move(stream),
                                                       args.getCollectionIndex(),
                                                       axisValues.get(),
                                                       axisDefinitions.count());
        return sk_sp<SkTypeface>(SkTypeface_FCI::Create(std::move(fontData), std::move(name),
                                                        style, isFixedPitch));
    }
Пример #6
0
    SkTypeface* onCreateFromStream(SkStreamAsset* bareStream, int ttcIndex) const override {
        SkAutoTDelete<SkStreamAsset> stream(bareStream);
        const size_t length = stream->getLength();
        if (!length) {
            return nullptr;
        }
        if (length >= 1024 * 1024 * 1024) {
            return nullptr;  // don't accept too large fonts (>= 1GB) for safety.
        }

        // TODO should the caller give us the style or should we get it from freetype?
        SkFontStyle style;
        bool isFixedWidth = false;
        if (!fScanner.scanFont(stream, 0, nullptr, &style, &isFixedWidth, nullptr)) {
            return nullptr;
        }

        return SkTypeface_FCI::Create(style, isFixedWidth, stream.release(), ttcIndex);
    }
    sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> stream,
                                            int ttcIndex) const override {
        const size_t length = stream->getLength();
        if (!length) {
            return nullptr;
        }
        if (length >= 1024 * 1024 * 1024) {
            return nullptr;  // don't accept too large fonts (>= 1GB) for safety.
        }

        // TODO should the caller give us the style or should we get it from freetype?
        SkString name;
        SkFontStyle style;
        bool isFixedPitch = false;
        if (!fScanner.scanFont(stream.get(), 0, &name, &style, &isFixedPitch, nullptr)) {
            return nullptr;
        }

        auto fontData = skstd::make_unique<SkFontData>(std::move(stream), ttcIndex, nullptr, 0);
        return sk_sp<SkTypeface>(SkTypeface_FCI::Create(std::move(fontData), std::move(name),
                                                        style, isFixedPitch));
    }