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Subject: Re: [office] proposal for new position and space attributesfor the list level
Dear TC members; wrt. Oliver's proposal I would like to suggest a different solution, which will provide more interoperability with other standards --- I guess :-): Enhancements to the spec: a) add a text:min-label-width-suffix attribute to the style-list-level-properties-attlist. b) add a <style:paragraph-properties> child element to <text:list-level-style-number> and < text:list-level-style-bullet>. c) add a text:paragraph-style-name attribute to the text-list-level-style-number-attr. A detailed discussion can be found at “http://wiki.services.openoffice.org/wiki/Number_layout”. Please note that the most important enhancement is the text:min-label-width-suffix attribute, which when set will switch to a new numbering mode. The enhancements b) and c) are needed to store paragraph formatting properties on which the new numbering mode relies. This is the biggest diff to Olivers proposal which introduces the new paragraph propertiy-like attributes text:list-tab-stop-position and fo:margin-left. ~Florian >>> Oliver-Rainer Wittmann - Software Engineer - Sun Microsystems <Oliver-Rainer.Wittmann@Sun.COM> 01/26/07 1:27 PM >>> Dear TC members, this is a proposal for new attributes for the list-level style (element <style:list-level-properties>) to provide an new possibility to specify the position und spacing of the list label and the list item itself: The new attributes for the list level style are: - text:label-followed-by - text:list-tab-stop-position - text:label-aligned-at - fo:margin-left These new attributes plus the existing attribute fo:text-align give the possibility to specify the position and spacing of the list label and the list item in a new way, which could be called position and spacing via label alignment. The existing attributes text:space-before, text:min-label-width and text:min-label-distance plus fo:text-align defines somehow the position and spacing via label size and position. The new attributes are grouped together in a new element, named style:list-level-label-alignment. This element has to contain the attribute text:label-followed-by. Attributes text:list-tab-stop-position, text:label-aligned-at and fo:margin-left are optional. if any of these attributes are missing, its values is assumed to be 0. In order to decide, which group of attributes are used to define the position and spacing of the list label and the list item the new attribute text:list-level-position-and-space-mode is introduced. - text:list-level-position-and-space-mode: <define name="style-list-level-properties-attlist" combine="interleave"> <optional> <attribute name="text:list-level-position-and-space-mode"> <choice> <value>label-width-and-position</value> <value>label-alignment</value> </choice> </attribute> </optional> </define> Meaning of these values: - label-width-and-position: The existing attributes text:space-before, text:minimum-label-width, text:minimum-label-distance and fo:text-align are used to define the position and spacing of the list label and the list item. - label-alignment: The new attributes and fo:text-align are used to define the position and spacing of the list label and the list item. The values of the existing attributes for text:space-before, text:minimum-label-width and text:minimum-label-distance are treated as 0. If attribute text:list-level-position-and-space-mode is missing, which is hold for documents conforming previous ODF versions, its value is assumed to be label-width-and-position. - text:label-followed-by: <define name="style-list-level-label-alignment-attlist" combine="interleave"> <attribute name="text:label-followed-by"> <choice> <value>listtab</value> <value>space</value> <value>nothing</value> </choice> </attribute> </define> Meaning of the values of attribute text:label-followed-by: - listtab - a tab stop follows the list label before the text starts. - space - a space character is inserted after the list label before the text starts. - nothing - the text starts directly after the list label. - text:list-tab-stop-position: <define name="style-list-level-label-alignment-attlist" combine="interleave"> <optional> <attribute name="text:list-tab-stop-position"> <ref name="nonNegativeLength"/> </attribute> </optional> </define> Attribute text:list-tab-stop-position is only relevant, if attribute text:label-followed-by is defined and its value equals "listtab". In all other cases, attribute text:list-tab-stop-position isn't evaluated. Attribute text:list-tab-stop-position specifies an additional tab stop, which is inserted into the list item. Typically, this tab stop is the one, which is applied after the list label. Thus, the text of the first line of list item typically starts at this tab stop. In left-to-right layout environments this tab stop is interpreted as a left tab. While in right-to-left layout environments its interpreted as a right tab. There exists two cases in which this additional tab stop isn't applied to start the text of the first line of the list item after the list label: - The position of the additional tab stop is before the end of the list label. - Between the end of the list label and the position of the additional tab stop exists already a tab stop at the list item. In these cases an existing respectively a default tab stop is applied after the list label. The additional tab stop can be applied by normal inserted tab characters in the list item in these cases. The additional tab stop can also been applied in the text lines, which follow the first line of the list item. - text:label-aligned-at <define name="style-list-level-label-alignment-attlist" combine="interleave"> <optional> <attribute name="text:label-align-at"> <ref name="Length"/> </attribute> </optional> </define> The new attribute text:label-aligned-at specifies the alignment position for the list label. The list label is aligned at this position, because value of text:minimum-label-width is treated as 0: - fo:text-align = "left": The list label starts at the alignment position. - fo:text-align = "center": The center of the list label is positioned at the alignment position. - fo:text-align = "right": The list label ends at the alignment position. - fo:margin-left <define name="style-list-level-label-alignment-attlist" combine="interleave"> <optional> <attribute name="fo:margin-left"> <ref name="Length"/> </attribute> </optional> </define> The new attribute fo:margin-left is only relevant, if attribute text:label-followed-by is defined. It specifies the indent of the text lines of the list item following the first line. The new attributes text:label-aligned-at and fo:margin-left for a list level style are competing with the paragraph indent attributes fo:text-indent and fo:margin-left. The same is hold for the corresponding paragraph indent attributes for a paragraph style. These paragraph indent attributes are used to calculate the indent of first line of the paragraph and the indent of the following lines: - first line indent = fo:text-indent + fo:margin-left - following lines indent = fo:margin-left In the following is described how this competition is solved. - List style with list level style directly applied to a paragraph via an automatic paragraph style: If neither paragraph indent attribute fo:text-indent nor paragraph indent attribute fo:margin-left are defined, the new list level style attributes text:label-aligned-at and fo:margin-left are used in order to determine the indentation of the paragraph. If one of the paragraph indent attributes are defined - the value of the missing one is assumed to be 0 -, the given values of list level style attributes text:label-aligned-at and fo:margin-left are ignored. For the alignment position for the list label the first line indent is used. For the indent of the following lines of the list item the paragraph following line indent is used. - List style with list level style applied to a paragraph via an attribute of a paragraph style: The new attributes label-aligned-at and indent-at of a certain list level of a list style are used as indent attributes for a paragraph, which have such a paragraph style applied, if neither the automatic paragraph style nor the paragraph style provides own indent attributes ( fo:text-indent and fo:margin-left). If indent attributes are given at the automatic paragraph style or the paragraph style, these attributes are used to determine the alignment position and the indent for the text lines following the first line. Regards, Oliver.
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