DR 09-0037 - PML, Presentation: Clarify description of properties in embeddedFontLst

Thu Mar 18 19:42:01 CET 2010

This is in regards to the JP defect report.  Our proposed response is as follows.

We have two choices in terms of how we handle this defect report:

1.       we can specify that the charset, panose and pitchFamily attributes are to be ignored if otherwise specified; or,

2.       we can remove them from the standard altogether.

I'm looking for guidance here.  I'm normally not inclined to remove things from the standard as I always worry that some implementer that I'm not aware of is writing this information.  That said, based on my limited research, I do not know of anyone writing out these attributes.

Here is the markup for choice 1:

19.2.1.13        font (Embedded Font Name)
This element specifies specific properties describing an embedded font. Once specified, this font is available for use within the presentation. Within a font specification there can be regular, bold, italic and boldItalic versions of the font specified. The actual font data for each of these is referenced using a relationships file that contains links to all available fonts. This font data contains font information for each of the characters to be made available in each version of the font.

[Example: Consider the following embedded font.

<p:embeddedFont>

  <p:font typeface="MyFont" pitchFamily="34" charset="0"/>

  <p:regular r:id="rId2"/>

</p:embeddedFont>
end example]

Font Substitution Logic:

If the specified font is not available on a system being used for rendering, then the attributes of this element are to be utilized in selecting an alternate font.

[Note: Not all characters for a typeface must be stored. It is up to the generating application to determine which characters are to be stored in the corresponding font data files. end note]

Parent Elements

embeddedFont (§19.2.1.9)

Attributes

Description

charset (Similar Character Set)

Namespace: .../drawingml/2006/main

Specifies the character set which is supported by the parent font. This information can be used in font substitution logic to locate an appropriate substitute font when this font is not available. This information is determined by querying the font when present and shall not be modified when the font is not available.

The value of this attribute shall be interpreted as follows:

Value

Description

0x00

Specifies the ANSI character set. (IANA name iso-8859-1)

0x01

Specifies the default character set.

0x02

Specifies the Symbol character set. This value specifies that the characters in the Unicode private use area (U+FF00 to U+FFFF) of the font should be used to display characters in the range U+0000 to U+00FF.

0x4D

Specifies a Macintosh (Standard Roman) character set. (IANA name macintosh)

0x80

Specifies the JIS character set. (IANA name shift_jis)

0x81

Specifies the Hangul character set. (IANA name ks_c_5601-1987)

0x82

Specifies a Johab character set. (IANA name KS C-5601-1992)

0x86

Specifies the GB-2312 character set. (IANA name GBK)

0x88

Specifies the Chinese Big Five character set. (IANA name Big5)

0xA1

Specifies a Greek character set. (IANA name windows-1253)

0xA2

Specifies a Turkish character set. (IANA name iso-8859-9)

0xA3

Specifies a Vietnamese character set. (IANA name windows-1258)

0xB1

Specifies a Hebrew character set. (IANA name windows-1255)

0xB2

Specifies an Arabic character set. (IANA name windows-1256)

0xBA

Specifies a Baltic character set. (IANA name windows-1257)

0xCC

Specifies a Russian character set. (IANA name windows-1251)

0xDE

Specifies a Thai character set. (IANA name windows-874)

0xEE

Specifies an Eastern European character set. (IANA name windows-1250)

0xFF

Specifies an OEM character set not defined by ISO/IEC 29500.

Any other value

Application-defined, can be ignored.

If a charset is specified elsewhere, this attribute should be ignored.

The possible values for this attribute are defined by the W3C XML Schema byte datatype.

panose (Panose Setting)

Namespace: .../drawingml/2006/main

Specifies the Panose-1 classification number for the current font using the mechanism defined in §4.2.7.17 of ISO/IEC 14496-22:2007.

If a charset is specified elsewhere, this attribute should be ignored.

The possible values for this attribute are defined by the ST_Panose simple type (§22.9.2.8).

pitchFamily (Similar Font Family)

Namespace: .../drawingml/2006/main

Specifies the font pitch as well as the font family for the corresponding font. Because the value of this attribute is determined by a byte variable this value shall be interpreted as follows:

Value

Description

0x00

DEFAULT PITCH + UNKNOWN FONT FAMILY

0x01

FIXED PITCH + UNKNOWN FONT FAMILY

0x02

VARIABLE PITCH + UNKNOWN FONT FAMILY

0x10

DEFAULT PITCH + ROMAN FONT FAMILY

0x11

FIXED PITCH + ROMAN FONT FAMILY

0x12

VARIABLE PITCH + ROMAN FONT FAMILY

0x20

DEFAULT PITCH + SWISS FONT FAMILY

0x21

FIXED PITCH + SWISS FONT FAMILY

0x22

VARIABLE PITCH + SWISS FONT FAMILY

0x30

DEFAULT PITCH + MODERN FONT FAMILY

0x31

FIXED PITCH + MODERN FONT FAMILY

0x32

VARIABLE PITCH + MODERN FONT FAMILY

0x40

DEFAULT PITCH + SCRIPT FONT FAMILY

0x41

FIXED PITCH + SCRIPT FONT FAMILY

0x42

VARIABLE PITCH + SCRIPT FONT FAMILY

0x50

DEFAULT PITCH + DECORATIVE FONT FAMILY

0x51

FIXED PITCH + DECORATIVE FONT FAMILY

0x52

VARIABLE PITCH + DECORATIVE FONT FAMILY

This information is determined by querying the font when present and shall not be modified when the font is not available. This information can be used in font substitution logic to locate an appropriate substitute font when this font is not available.

If a charset is specified elsewhere, this attribute should be ignored.

The possible values for this attribute are defined by the W3C XML Schema byte datatype.

typeface (Text Typeface)

Namespace: .../drawingml/2006/main

Specifies the typeface, or name of the font that is to be used. The typeface is a string name of the specific font that should be used in rendering the presentation. If this font is not available within the font list of the generating application than font substitution logic should be utilized in order to select an alternate font.

The possible values for this attribute are defined by the ST_TextTypeface simple type (§20.1.10.81).

[Note: The W3C XML Schema definition of this element's content model (CT_TextFont) is located in §A.4.1. end note]

And here is the markup for choice 2:

19.2.1.13        font (Embedded Font Name)
This element specifies specific properties describing an embedded font. Once specified, this font is available for use within the presentation. Within a font specification there can be regular, bold, italic and boldItalic versions of the font specified. The actual font data for each of these is referenced using a relationships file that contains links to all available fonts. This font data contains font information for each of the characters to be made available in each version of the font.

[Example: Consider the following embedded font.

<p:embeddedFont>

  <p:font typeface="MyFont" pitchFamily="34" charset="0"/>

  <p:regular r:id="rId2"/>

</p:embeddedFont>
end example]

Font Substitution Logic:

If the specified font is not available on a system being used for rendering, then the attributes of this element are to be utilized in selecting an alternate font.

[Note: Not all characters for a typeface must be stored. It is up to the generating application to determine which characters are to be stored in the corresponding font data files. end note]

Parent Elements

embeddedFont (§19.2.1.9)

Attributes

Description

charset (Similar Character Set)

Namespace: .../drawingml/2006/main

Specifies the character set which is supported by the parent font. This information can be used in font substitution logic to locate an appropriate substitute font when this font is not available. This information is determined by querying the font when present and shall not be modified when the font is not available.

The value of this attribute shall be interpreted as follows:

Value

Description

0x00

Specifies the ANSI character set. (IANA name iso-8859-1)

0x01

Specifies the default character set.

0x02

Specifies the Symbol character set. This value specifies that the characters in the Unicode private use area (U+FF00 to U+FFFF) of the font should be used to display characters in the range U+0000 to U+00FF.

0x4D

Specifies a Macintosh (Standard Roman) character set. (IANA name macintosh)

0x80

Specifies the JIS character set. (IANA name shift_jis)

0x81

Specifies the Hangul character set. (IANA name ks_c_5601-1987)

0x82

Specifies a Johab character set. (IANA name KS C-5601-1992)

0x86

Specifies the GB-2312 character set. (IANA name GBK)

0x88

Specifies the Chinese Big Five character set. (IANA name Big5)

0xA1

Specifies a Greek character set. (IANA name windows-1253)

0xA2

Specifies a Turkish character set. (IANA name iso-8859-9)

0xA3

Specifies a Vietnamese character set. (IANA name windows-1258)

0xB1

Specifies a Hebrew character set. (IANA name windows-1255)

0xB2

Specifies an Arabic character set. (IANA name windows-1256)

0xBA

Specifies a Baltic character set. (IANA name windows-1257)

0xCC

Specifies a Russian character set. (IANA name windows-1251)

0xDE

Specifies a Thai character set. (IANA name windows-874)

0xEE

Specifies an Eastern European character set. (IANA name windows-1250)

0xFF

Specifies an OEM character set not defined by ISO/IEC 29500.

Any other value

Application-defined, can be ignored.

The possible values for this attribute are defined by the W3C XML Schema byte datatype.

panose (Panose Setting)

Namespace: .../drawingml/2006/main

Specifies the Panose-1 classification number for the current font using the mechanism defined in §4.2.7.17 of ISO/IEC 14496-22:2007.

The possible values for this attribute are defined by the ST_Panose simple type (§22.9.2.8).

pitchFamily (Similar Font Family)

Namespace: .../drawingml/2006/main

Specifies the font pitch as well as the font family for the corresponding font. Because the value of this attribute is determined by a byte variable this value shall be interpreted as follows:

Value

Description

0x00

DEFAULT PITCH + UNKNOWN FONT FAMILY

0x01

FIXED PITCH + UNKNOWN FONT FAMILY

0x02

VARIABLE PITCH + UNKNOWN FONT FAMILY

0x10

DEFAULT PITCH + ROMAN FONT FAMILY

0x11

FIXED PITCH + ROMAN FONT FAMILY

0x12

VARIABLE PITCH + ROMAN FONT FAMILY

0x20

DEFAULT PITCH + SWISS FONT FAMILY

0x21

FIXED PITCH + SWISS FONT FAMILY

0x22

VARIABLE PITCH + SWISS FONT FAMILY

0x30

DEFAULT PITCH + MODERN FONT FAMILY

0x31

FIXED PITCH + MODERN FONT FAMILY

0x32

VARIABLE PITCH + MODERN FONT FAMILY

0x40

DEFAULT PITCH + SCRIPT FONT FAMILY

0x41

FIXED PITCH + SCRIPT FONT FAMILY

0x42

VARIABLE PITCH + SCRIPT FONT FAMILY

0x50

DEFAULT PITCH + DECORATIVE FONT FAMILY

0x51

FIXED PITCH + DECORATIVE FONT FAMILY

0x52

VARIABLE PITCH + DECORATIVE FONT FAMILY

This information is determined by querying the font when present and shall not be modified when the font is not available. This information can be used in font substitution logic to locate an appropriate substitute font when this font is not available.

The possible values for this attribute are defined by the W3C XML Schema byte datatype.

typeface (Text Typeface)

Namespace: .../drawingml/2006/main

Specifies the typeface, or name of the font that is to be used. The typeface is a string name of the specific font that should be used in rendering the presentation. If this font is not available within the font list of the generating application than font substitution logic should be utilized in order to select an alternate font.

The possible values for this attribute are defined by the ST_TextTypeface simple type (§20.1.10.81).

[Note: The W3C XML Schema definition of this element's content model (CT_TextFont) is located in §A.4.1. end note]

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