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- <?xml version="1.0" encoding="utf-8"?>
-
- <!--
- This file addresses breaks in page context, with a
- 2-column layout.
- -->
-
- <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
- <fo:layout-master-set>
- <!-- layout for all pages -->
- <fo:simple-page-master master-name="all"
- page-height="29.7cm"
- page-width="21cm"
- margin-top="1cm"
- margin-bottom="2cm"
- margin-left="2.5cm"
- margin-right="2.5cm">
- <fo:region-body
- margin-top="3cm" margin-bottom="2cm"
- column-count="2" column-gap="0.25in"/>
- <fo:region-before extent="3cm"/>
- <fo:region-after extent="2cm"/>
- </fo:simple-page-master>
- </fo:layout-master-set>
-
- <fo:page-sequence master-name="all">
- <fo:static-content flow-name="xsl-region-after">
- <fo:block font-size="10pt" text-align="start"
- border-style="solid" border-color="blue" border-width="0.5pt"
- space-before.optimum="6pt">
- Text excerpt from XSL Candidate Recommendation, 21 Nov 2000.
- </fo:block>
- </fo:static-content>
-
- <fo:flow flow-name="xsl-region-body">
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep and break conditions apply to a class of areas, which are typically
- page-reference-areas, column-areas, and line-areas. The appropriate class
- for a given condition is referred to as a context and an area in this
- class is a context-area. As defined in Section 6.4.1, page-reference-areas
- are areas generated by an fo:page-sequence using the specifications in a
- fo:page-master, and column-areas are normal-flow-reference-areas generated
- from a region-body, or region-reference-areas generated from other types
- of region-master.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- A keep or break condition is an open statement about a formatting object
- and the tree relationships of the areas it generates with the relevant
- context-areas. These tree relationships are defined mainly in terms of
- leading or trailing areas. If A is a descendant of P, then A is defined
- to be leading in P if A has no preceding sibling which is a normal area,
- nor does any of its ancestor areas up to but not including P. Similarly,
- A is defined to be trailing in P if A has no following sibling which is
- a normal area, nor does any of its ancestor areas up to but not including P.
- For any given formatting object, the next formatting object in the flow is
- the first formatting object following (in the pre-order traversal order)
- which generates and returns normal areas.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Break conditions are either break-before or break-before conditions.
- A break-before condition is satisfied if the first area generated and
- returned by the formatting object is leading within a context-area. A
- break-before condition depends on the next formatting object in the flow;
- it is satisfied if either there is no such next formatting object, or
- if the first normal area generated and returned by that formatting
- object is leading in a context-area.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt"
- color="blue"
- break-before="even-page">
- This is a block with a <fo:inline font-style="italic">break-before="even-page"
- </fo:inline> break condition. This condition is satisfied if the
- first normal area generated by this FO is leading in an even-page
- context.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Break conditions are imposed by the break-before and break-before
- properties. A refined value of page for these traits imposes a break
- condition with a context consisting of the page-reference-areas; a
- value of even-page or odd-page imposes a break condition with a
- context of even-numbered page-reference-areas or odd-numbered page
- reference-areas, respectively; a value of column imposes a break
- condition with a context of column-areas. A value of auto in a
- break-before or break-before trait imposes no break condition.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep conditions are either keep-with-previous, keep-with-next, or
- keep-together conditions. A keep-with-previous condition on an
- object is satisfied if the first area generated and returned by
- the formatting object is not leading within a context-area, or
- if there are no preceding areas in a post-order traversal of the
- area tree. A keep-with-next condition is satisfied if the last
- area generated and returned by the formatting object is not
- trailing within a context-area, or if there are no following
- areas in a pre-order traversal of the area tree. A keep-together
- condition is satisfied if all areas generated and returned by
- the formatting object are descendants of a single context-area.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt"
- color="blue"
- break-before="even-page">
- This is a block with a <fo:inline font-style="italic">break-before="even-page"
- </fo:inline> break condition. This condition is satisfied if the
- first normal area generated by this FO is leading in an even-page
- context.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep conditions are imposed by the "within-page", "within-column",
- and "within-line" components of the "keep-with-previous",
- "keep-with-next", and "keep-together" properties. The refined value
- of each component specifies the strength of the keep condition
- imposed, with higher numbers being stronger than lower numbers and
- the value always being stronger than all numeric values. A component
- with value auto does not impose a keep condition. A "within-page"
- component imposes a keep-condition with context consisting of the
- page-reference-areas; "within-column", with context consisting of
- the column-areas; and "within-line" with context consisting of the
- line-areas.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- The area tree is constrained to satisfy all break conditions imposed.
- Each keep condition must also be satisfied, except when this would
- cause a break condition or a stronger keep condition to fail to be
- satisfied. If not all of a set of keep conditions of equal strength
- can be satisfied, then some maximal satisfiable subset of conditions
- of that strength must be satisfied (together with all break conditions
- and maximal subsets of stronger keep conditions, if any).
- </fo:block>
-
- <fo:block span="all">
- <fo:leader leader-pattern="rule"
- rule-thickness="2.0pt"
- leader-length="14cm"
- space-before.optimum="0pt"
- space-after.optimum="12pt"
- start-indent="1cm"
- end-indent="1cm"
- background-color="blue"
- color="yellow"/>
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep and break conditions apply to a class of areas, which are typically
- page-reference-areas, column-areas, and line-areas. The appropriate class
- for a given condition is referred to as a context and an area in this
- class is a context-area. As defined in Section 6.4.1, page-reference-areas
- are areas generated by an fo:page-sequence using the specifications in a
- fo:page-master, and column-areas are normal-flow-reference-areas generated
- from a region-body, or region-reference-areas generated from other types
- of region-master.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- A keep or break condition is an open statement about a formatting object
- and the tree relationships of the areas it generates with the relevant
- context-areas. These tree relationships are defined mainly in terms of
- leading or trailing areas. If A is a descendant of P, then A is defined
- to be leading in P if A has no preceding sibling which is a normal area,
- nor does any of its ancestor areas up to but not including P. Similarly,
- A is defined to be trailing in P if A has no following sibling which is
- a normal area, nor does any of its ancestor areas up to but not including P.
- For any given formatting object, the next formatting object in the flow is
- the first formatting object following (in the pre-order traversal order)
- which generates and returns normal areas.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt"
- color="blue"
- break-before="odd-page">
- This is a block with a <fo:inline font-style="italic">break-before="odd-page"
- </fo:inline> break condition. This condition is satisfied if the
- first normal area generated by this FO is leading in an odd-page
- context.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Break conditions are either break-before or break-before conditions.
- A break-before condition is satisfied if the first area generated and
- returned by the formatting object is leading within a context-area. A
- break-before condition depends on the next formatting object in the flow;
- it is satisfied if either there is no such next formatting object, or
- if the first normal area generated and returned by that formatting
- object is leading in a context-area.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Break conditions are imposed by the break-before and break-before
- properties. A refined value of page for these traits imposes a break
- condition with a context consisting of the page-reference-areas; a
- value of even-page or odd-page imposes a break condition with a
- context of even-numbered page-reference-areas or odd-numbered page
- reference-areas, respectively; a value of column imposes a break
- condition with a context of column-areas. A value of auto in a
- break-before or break-before trait imposes no break condition.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep conditions are either keep-with-previous, keep-with-next, or
- keep-together conditions. A keep-with-previous condition on an
- object is satisfied if the first area generated and returned by
- the formatting object is not leading within a context-area, or
- if there are no preceding areas in a post-order traversal of the
- area tree. A keep-with-next condition is satisfied if the last
- area generated and returned by the formatting object is not
- trailing within a context-area, or if there are no following
- areas in a pre-order traversal of the area tree. A keep-together
- condition is satisfied if all areas generated and returned by
- the formatting object are descendants of a single context-area.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- Keep conditions are imposed by the "within-page", "within-column",
- and "within-line" components of the "keep-with-previous",
- "keep-with-next", and "keep-together" properties. The refined value
- of each component specifies the strength of the keep condition
- imposed, with higher numbers being stronger than lower numbers and
- the value always being stronger than all numeric values. A component
- with value auto does not impose a keep condition. A "within-page"
- component imposes a keep-condition with context consisting of the
- page-reference-areas; "within-column", with context consisting of
- the column-areas; and "within-line" with context consisting of the
- line-areas.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt"
- color="blue"
- break-before="odd-page">
- This is a block with a <fo:inline font-style="italic">break-before="odd-page"
- </fo:inline> break condition. This condition is satisfied if the
- first normal area generated by this FO is leading in an odd-page
- context.
- </fo:block>
-
- <fo:block
- font-size="14pt" font-family="sans-serif"
- line-height="18pt" space-after.optimum="15pt">
- The area tree is constrained to satisfy all break conditions imposed.
- Each keep condition must also be satisfied, except when this would
- cause a break condition or a stronger keep condition to fail to be
- satisfied. If not all of a set of keep conditions of equal strength
- can be satisfied, then some maximal satisfiable subset of conditions
- of that strength must be satisfied (together with all break conditions
- and maximal subsets of stronger keep conditions, if any).
- </fo:block>
-
- </fo:flow>
- </fo:page-sequence>
- </fo:root>
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