W3C WOFF File Format 1.0 support in Opera Presto 2.8

W3C reference

W3C WOFF File Format 1.0

The primary purpose of the WOFF format is to package fonts linked to web documents by means of CSS @font-face rules. Opera Presto provides support for the WOFF format with the following exception:

• SOR (Same Origin Restriction) is not implemented.

Extended metadata block

<metadata> element

Element	Attributes	Descriptions	Support
<metadata>	version	<metadata>: The main element version: The format version of the metadata element, currently 1.0	Yes

<metadata> child elements

Child Element / attributes	Subelements / attributes	Descriptions	Support
<uniqueid> id		<uniqueid>: A unique identifier string for the font id: The identification string	Yes
<vendor> name url		<vendor>: Information about the font vendor name: The name of the font vendor url: The url for the font vendor	Yes
<credits>	<credit> name url role	<credits>: Credit information for the font <credit>: A single credit record name: The name of the entity being credited url: The url for the entity being credited role: The role of the entity being credited	Yes
<description> url		<description>: An arbitrary text description of the font's design, its history, etc. url: The url for more information about the font design, history, etc.	Yes
<license> url id		<license>: Licensing information for the font url: The url for the license, more information about the license, etc. id: An identifying string for the license	Yes
<copyright>		The copyright for the font	Yes
<trademark>		The trademark for the font	Yes
<licensee> name		<licensee>: The licensee of the font name: The name of the licensee	Yes
<extension> id	<name> lang <item> id <name> lang <value> lang	<extension>: A container element for extended metadata provided by the vendor id: An arbitrary identifier defined by the vendor <name>: Zero or more name elements may be used to provide a human-friendly name for the collection of extended metadata items lang: A language tag as defined in the IANA Subtag Registry <item>: At least one item element MUST be present in each extension container id: An arbitrary identifier defined by the vendor <name>: One or more name elements are used to provide a human-friendly name for a specific extended metadata item lang: A language tag as defined in the IANA Subtag Registry. <value>: One or more value elements are used to provide the value of a specific extended metadata item lang: A language tag as defined in the IANA Subtag Registry.	Yes

Extended metadata example

<?xml version="1.0" encoding="UTF-8"?>
<metadata version="1.0">
    <uniqueid id="com.example.fontvendor.demofont.rev12345" />
    <vendor name="Font Vendor" url="http://fontvendor.example.com" />
    <credits>
        <credit
            name="Font Designer"
            url="http://fontdesigner.example.com"
            role="Lead" />
        <credit
            name="Another Font Designer"
            url="http://anotherdesigner.example.org"
            role="Contributor" />
        <credit
            name="Yet Another"
            role="Hinting" />
    </credits>
    <description>
        <text lang="en">
            A member of the Demo font family.
            This font is a humanist sans serif style designed
            for optimal legibility in low-resolution environments.
            It can be obtained from fontvendor.example.com.
        </text>
    </description>
    <license url="http://fontvendor.example.com/license"
             id="fontvendor-Web-corporate-v2">
        <text lang="en">A license goes here.</text>
        <text lang="fr">Un permis va ici.</text>
    </license>
    <copyright>
        <text lang="en">Copyright ©2009 Font Vendor"</text>
    </copyright>
    <trademark>
        <text lang="en">Demo Font is a trademark of Font Vendor</text>
        <text lang="de">Demo Font ist ein eingetragenes Warenzeichen der Font Vendor</text>
    </trademark>
    <licensee name="Wonderful Websites, Inc." />
    <extension id="org.example.fonts.metadata.v1">
        <name lang="en">Additional font information</name>
        <item id="org.example.fonts.metadata.v1.why">
            <name lang="en">Purpose</name>
            <value lang="en">This font exists as an example of WOFF packaging.</value>
        </item>
    </extension>
</metadata>