[OASIS Issue Tracker] (OFFICE-3847) Simplify Line Height handling

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

     [ https://issues.oasis-open.org/browse/OFFICE-3847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Stahl updated OFFICE-3847:
----------------------------------
    Proposal: 
change to part 3 "documents":

20.201 fo:line-height

replace:
    * normal: disables the effects of style:line-height-at-least and style:line-spacing.

with:
    * normal: equivalent to 100%

20.314 style:line-height-at-least

remove sentence:
    The effect of this attribute is disabled when fo:line-height has the value of normal.

20.315 style:line-spacing

remove sentence:
The effect of this attribute is disabled when fo:line-height has the value of normal.

To each of the above attributes append this sentence:

    The attributes fo:line-height, style:line-height-at-least, style:line-spacing specify the same formatting property, i.e., any one of these attributes on a style overrides any of these attributes on its parent style.

schema change:

{noformat}
--- Documents/odf/tc/OpenDocument-schema-v1.3-wd06-with-fixes.rng	2018-06-25 13:31:52.506732295 +0200
+++ Documents/odf/tc/3847.rng	2019-01-15 14:11:56.453028831 +0100
@@ -12274,35 +12274,33 @@
   <rng:define name="style-paragraph-properties-attlist">
     <rng:interleave>
       <rng:optional>
         <rng:attribute name="style:contextual-spacing">
           <rng:ref name="boolean"/>
         </rng:attribute>
       </rng:optional>
       <!-- https://issues.oasis-open.org/browse/OFFICE-3767 -->
       <rng:optional>
-        <rng:attribute name="fo:line-height">
-          <rng:choice>
-            <rng:value>normal</rng:value>
+        <rng:choice>
+          <rng:attribute name="fo:line-height">
+            <rng:choice>
+              <rng:value>normal</rng:value>
+              <rng:ref name="nonNegativeLength"/>
+              <rng:ref name="percent"/>
+            </rng:choice>
+          </rng:attribute>
+          <rng:attribute name="style:line-height-at-least">
             <rng:ref name="nonNegativeLength"/>
-            <rng:ref name="percent"/>
-          </rng:choice>
-        </rng:attribute>
-      </rng:optional>
-      <rng:optional>
-        <rng:attribute name="style:line-height-at-least">
-          <rng:ref name="nonNegativeLength"/>
-        </rng:attribute>
-      </rng:optional>
-      <rng:optional>
-        <rng:attribute name="style:line-spacing">
-          <rng:ref name="length"/>
-        </rng:attribute>
+          </rng:attribute>
+          <rng:attribute name="style:line-spacing">
+            <rng:ref name="length"/>
+          </rng:attribute>
+        </rng:choice>
       </rng:optional>
       <rng:optional>
         <rng:attribute name="style:font-independent-line-spacing">
           <rng:ref name="boolean"/>
         </rng:attribute>
       </rng:optional>
       <rng:ref name="common-text-align"/>
       <rng:optional>
         <rng:attribute name="fo:text-align-last">
{noformat}


  was:
I suggest to either make 
http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-fo_line-height
http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_line-height-at-least
http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_line-spacing
http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_font-independent-line-spacing  
either exclusively usable in the RelaxNG, or to specify a precedence (or collision) handling if two or more attributes influencing line-heihgt exist at the same time?


> Simplify Line Height handling
> -----------------------------
>
>                 Key: OFFICE-3847
>                 URL: https://issues.oasis-open.org/browse/OFFICE-3847
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Improvement
>          Components: Formatting Properties, Paragraph, Part 1 (Schema)
>    Affects Versions: ODF 1.2
>            Reporter: Svante Schubert
>            Priority: Major
>             Fix For: ODF 1.4
>
>
> Currently we have four independt ODF attributes defining our line-height in ODF. 
> http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-fo_line-height
> http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_line-height-at-least
> http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_line-spacing
> http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-style_font-independent-line-spacing 
> I would like to have feed-back from other implementors on the following:
> The first @fo:line-height is dereived from the W3C formatting object specification, 
> http://www.w3.org/TR/xsl/#line-height here we should make clear the "normal" for office documents is equal 100%, not as in browser between 110 and 130% 
> The second @style:line-height-at-least is an extension of the W3C attribute to have a better OOXML interoperability.
> The third @style:line-spacing is equal to 'leading' (not from leader, but from the metal 'lead', as during ancient print there was added a line of lead between the letters), it is specifiying the space between lines.
> The last one @style:font-independent-line-spacing is only used by implementations for presentations, to have a similar layout during the change of the font.
> AFAIK all ODF implementations are using these values exclusivly. 
> I suggest to either make them exclusively in the RelaxNG, or to specify a precedence (or collision) handling. What happens if two attributes exist at the same time?



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