Aspose::Words::Saving::HtmlSaveOptions::get_FontSavingCallback method

HtmlSaveOptions::get_FontSavingCallback method

Allows to control how fonts are saved when a document is saved to HTML, MHTML or EPUB.

System::SharedPtr<Aspose::Words::Saving::IFontSavingCallback> Aspose::Words::Saving::HtmlSaveOptions::get_FontSavingCallback() const

Examples

Shows how to define custom logic for exporting fonts when saving to HTML.

void SaveExportedFonts()
{
    auto doc = MakeObject<Document>(MyDir + u"Rendering.docx");

    // Configure a SaveOptions object to export fonts to separate files.
    // Set a callback that will handle font saving in a custom manner.
    auto options = MakeObject<HtmlSaveOptions>();
    options->set_ExportFontResources(true);
    options->set_FontSavingCallback(MakeObject<ExHtmlSaveOptions::HandleFontSaving>());

    // The callback will export .ttf files and save them alongside the output document.
    doc->Save(ArtifactsDir + u"HtmlSaveOptions.SaveExportedFonts.html", options);

    std::function<bool(String s)> endsWithTtf = [](String s)
    {
        return s.EndsWith(u".ttf");
    };

    for (String fontFilename : System::Array<String>::FindAll(System::IO::Directory::GetFiles(ArtifactsDir), endsWithTtf))
    {
        std::cout << fontFilename << std::endl;
    }

}

class HandleFontSaving : public IFontSavingCallback
{
private:
    void FontSaving(SharedPtr<FontSavingArgs> args) override
    {
        std::cout << "Font:\t" << args->get_FontFamilyName();
        if (args->get_Bold())
        {
            std::cout << ", bold";
        }
        if (args->get_Italic())
        {
            std::cout << ", italic";
        }
        std::cout << "\nSource:\t" << args->get_OriginalFileName() << ", " << args->get_OriginalFileSize() << " bytes\n" << std::endl;

        // We can also access the source document from here.
        ASSERT_TRUE(args->get_Document()->get_OriginalFileName().EndsWith(u"Rendering.docx"));

        ASSERT_TRUE(args->get_IsExportNeeded());
        ASSERT_TRUE(args->get_IsSubsettingNeeded());

        // There are two ways of saving an exported font.
        // 1 -  Save it to a local file system location:
        args->set_FontFileName(args->get_OriginalFileName().Split(MakeArray<char16_t>({System::IO::Path::DirectorySeparatorChar}))->LINQ_Last());

        // 2 -  Save it to a stream:
        args->set_FontStream(MakeObject<System::IO::FileStream>(
            ArtifactsDir + args->get_OriginalFileName().Split(MakeArray<char16_t>({System::IO::Path::DirectorySeparatorChar}))->LINQ_Last(),
            System::IO::FileMode::Create));
        ASSERT_FALSE(args->get_KeepFontStreamOpen());
    }
};

See Also

Aspose::Words::Saving::HtmlSaveOptions::get_FontResourcesSubsettingSizeThreshold method Aspose::Words::Saving::HtmlSaveOptions::get_FontsFolder method