sw/qa/extras/layout/data/field_hide_section.fodt |  193 +++++++++++++++++++++++
 sw/qa/extras/layout/layout.cxx                   |   45 +++++
 sw/source/core/layout/trvlfrm.cxx                |    5 
 3 files changed, 243 insertions(+)

New commits:
commit e2d82681a8055d0d4e7007b8dacf38f5675bc70f
Author:     Michael Stahl <michael.st...@allotropia.de>
AuthorDate: Thu Jul 11 14:55:26 2024 +0200
Commit:     Michael Stahl <michael.st...@allotropia.de>
CommitDate: Fri Jul 12 10:18:45 2024 +0200

    sw: layout: ShrinkFrame() may do nothing for layout frames...
    
    ... which may cause empty pages, so explicitly set the height to 0.
    
    (regression from commit 2dce213ce9f399c6ce1a3e928f34fa27988fa833)
    
    Change-Id: Ife5c2873b375431d2dd90c9b7e8b3b8c40a9cf7f
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170383
    Tested-by: Jenkins
    Reviewed-by: Michael Stahl <michael.st...@allotropia.de>

diff --git a/sw/qa/extras/layout/data/field_hide_section.fodt 
b/sw/qa/extras/layout/data/field_hide_section.fodt
new file mode 100644
index 000000000000..9d00bf6f8c4c
--- /dev/null
+++ b/sw/qa/extras/layout/data/field_hide_section.fodt
@@ -0,0 +1,193 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<office:document xmlns:officeooo="http://openoffice.org/2009/office"; 
xmlns:css3t="http://www.w3.org/TR/css3-text/"; 
xmlns:grddl="http://www.w3.org/2003/g/data-view#"; 
xmlns:xhtml="http://www.w3.org/1999/xhtml"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"; 
xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" 
xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" 
xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" 
xmlns:rpt="http://openoffice.org/2005/report"; 
xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" 
xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" 
xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" 
xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" 
xmlns:xlink="http://www.w3.org/1999/xlink"; 
xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" 
xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" 
xmlns:dc="http://purl.org/dc/eleme
 nts/1.1/" xmlns:ooo="http://openoffice.org/2004/office"; 
xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" 
xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0"
 
xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0"
 xmlns:drawooo="http://openoffice.org/2010/draw"; 
xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" 
xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" 
xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" 
xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" 
xmlns:ooow="http://openoffice.org/2004/writer"; 
xmlns:oooc="http://openoffice.org/2004/calc"; 
xmlns:tableooo="http://openoffice.org/2009/table"; 
xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0"
 xmlns:math="http://www.w3.org/1998/Math/MathML"; 
xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" 
xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0
 " xmlns:dom="http://www.w3.org/2001/xml-events"; 
xmlns:xforms="http://www.w3.org/2002/xforms"; office:version="1.2" 
office:mimetype="application/vnd.oasis.opendocument.text">
+ 
<office:meta><meta:creation-date>2024-07-11T15:14:52.010777485</meta:creation-date><meta:editing-duration>PT2M3S</meta:editing-duration><meta:editing-cycles>2</meta:editing-cycles><meta:generator>CIB_OfficeDev/6.4.0.26$Linux_X86_64
 
LibreOffice_project/c02dfb55f9962adebc1d2eb5248abd10c63e7bbe</meta:generator><dc:date>2024-07-11T15:16:53.863806593</dc:date><meta:document-statistic
 meta:table-count="1" meta:image-count="0" meta:object-count="0" 
meta:page-count="3" meta:paragraph-count="1" meta:word-count="1" 
meta:character-count="1" meta:non-whitespace-character-count="1"/></office:meta>
+ <office:font-face-decls>
+  <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation 
Serif'" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Arial Unicode MS" svg:font-family="'Arial 
Unicode MS'" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Serif CJK SC" svg:font-family="'Noto Serif 
CJK SC'" style:font-family-generic="system" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#3465a4" 
draw:fill-color="#729fcf" fo:wrap-option="no-wrap" draw:shadow-offset-x="0.3cm" 
draw:shadow-offset-y="0.3cm" draw:start-line-spacing-horizontal="0.283cm" 
draw:start-line-spacing-vertical="0.283cm" 
draw:end-line-spacing-horizontal="0.283cm" 
draw:end-line-spacing-vertical="0.283cm" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" 
style:line-break="strict" style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" 
style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="de" 
fo:country="DE" style:letter-kerning="true" style:font-name-asian="Noto Serif 
CJK SC" style:font-size-asian="10.5pt" style:language-asian="zh" 
style:country-asian="CN" style:font-name-complex="Arial Unicode MS" 
style:font-size-complex="12pt" style:language-complex="hi" 
style:country-complex="IN"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:orphans="2" fo:widows="2" 
fo:hyphenation-ladder-count="no-limit" style:text-autospace="ideograph-alpha" 
style:punctuation-wrap="hanging" style:line-break="strict" 
style:tab-stop-distance="1.251cm" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" 
style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="de" 
fo:country="DE" style:letter-kerning="true" style:font-name-asian="Noto Serif 
CJK SC" style:font-size-asian="10.5pt" style:language-asian="zh" 
style:country-asian="CN" style:font-name-complex="Arial Unicode MS" 
style:font-size-complex="12pt" style:language-complex="hi" 
style:country-complex="IN" fo:hyphenate="false" 
fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" 
loext:hyphenation-no-caps="false"/>
+  </style:default-style>
+  <style:default-style style:family="table">
+   <style:table-properties table:border-model="collapsing"/>
+  </style:default-style>
+  <style:default-style style:family="table-row">
+   <style:table-row-properties fo:keep-together="auto"/>
+  </style:default-style>
+  <style:style style:name="Standard" style:family="paragraph" 
style:class="text"/>
+  <style:style style:name="Table_20_Contents" style:display-name="Table 
Contents" style:family="paragraph" style:parent-style-name="Standard" 
style:class="extra">
+   <style:paragraph-properties fo:orphans="0" fo:widows="0" 
text:number-lines="false" text:line-number="0"/>
+  </style:style>
+  <text:outline-style style:name="Outline">
+   <text:outline-level-style text:level="1" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="2" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="3" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="4" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="5" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="6" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="7" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="8" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="9" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="10" style:num-format="">
+    <style:list-level-properties 
text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+  </text:outline-style>
+  <text:notes-configuration text:note-class="footnote" style:num-format="1" 
text:start-value="0" text:footnotes-position="page" 
text:start-numbering-at="document"/>
+  <text:notes-configuration text:note-class="endnote" style:num-format="i" 
text:start-value="0"/>
+  <text:linenumbering-configuration text:number-lines="false" 
text:offset="0.499cm" style:num-format="1" text:number-position="left" 
text:increment="5"/>
+ </office:styles>
+ <office:automatic-styles>
+  <style:style style:name="Table1" style:family="table">
+   <style:table-properties style:width="6.5cm" table:align="margins"/>
+  </style:style>
+  <style:style style:name="Table1.A" style:family="table-column">
+   <style:table-column-properties style:column-width="3.249cm" 
style:rel-column-width="32767*"/>
+  </style:style>
+  <style:style style:name="Table1.B" style:family="table-column">
+   <style:table-column-properties style:column-width="3.251cm" 
style:rel-column-width="32768*"/>
+  </style:style>
+  <style:style style:name="Table1.A1" style:family="table-cell">
+   <style:table-cell-properties fo:padding="0.097cm" fo:border-left="0.5pt 
solid #000000" fo:border-right="none" fo:border-top="0.5pt solid #000000" 
fo:border-bottom="0.5pt solid #000000"/>
+  </style:style>
+  <style:style style:name="Table1.B1" style:family="table-cell">
+   <style:table-cell-properties fo:padding="0.097cm" fo:border="0.5pt solid 
#000000"/>
+  </style:style>
+  <style:style style:name="Table1.A2" style:family="table-cell">
+   <style:table-cell-properties fo:padding="0.097cm" fo:border-left="0.5pt 
solid #000000" fo:border-right="none" fo:border-top="none" 
fo:border-bottom="0.5pt solid #000000"/>
+  </style:style>
+  <style:style style:name="Table1.B2" style:family="table-cell">
+   <style:table-cell-properties fo:padding="0.097cm" fo:border-left="0.5pt 
solid #000000" fo:border-right="0.5pt solid #000000" fo:border-top="none" 
fo:border-bottom="0.5pt solid #000000"/>
+  </style:style>
+  <style:style style:name="P1" style:family="paragraph" 
style:parent-style-name="Standard">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="P2" style:family="paragraph" 
style:parent-style-name="Table_20_Contents">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="Sect1" style:family="section">
+   <style:section-properties style:editable="false">
+    <style:columns fo:column-count="1" fo:column-gap="0cm"/>
+   </style:section-properties>
+  </style:style>
+  <style:page-layout style:name="pm1">
+   <style:page-layout-properties fo:page-width="10.5cm" 
fo:page-height="14.801cm" style:num-format="1" 
style:print-orientation="portrait" fo:margin-top="2cm" fo:margin-bottom="2cm" 
fo:margin-left="2cm" fo:margin-right="2cm" style:writing-mode="lr-tb" 
style:layout-grid-color="#c0c0c0" style:layout-grid-lines="20" 
style:layout-grid-base-height="0.706cm" style:layout-grid-ruby-height="0.353cm" 
style:layout-grid-mode="none" style:layout-grid-ruby-below="false" 
style:layout-grid-print="false" style:layout-grid-display="false" 
style:footnote-max-height="0cm">
+    <style:footnote-sep style:width="0.018cm" 
style:distance-before-sep="0.101cm" style:distance-after-sep="0.101cm" 
style:line-style="solid" style:adjustment="left" style:rel-width="25%" 
style:color="#000000"/>
+   </style:page-layout-properties>
+   <style:header-style/>
+   <style:footer-style/>
+  </style:page-layout>
+  <number:number-style style:name="N0">
+   <number:number number:min-integer-digits="1"/>
+  </number:number-style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text text:use-soft-page-breaks="true">
+   <text:variable-decls>
+    <text:variable-decl office:value-type="float" text:name="Foo"/>
+   </text:variable-decls>
+   <text:sequence-decls>
+    <text:sequence-decl text:display-outline-level="0" 
text:name="Illustration"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Table"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Text"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Figure"/>
+   </text:sequence-decls>
+   <text:p text:style-name="Standard"><text:variable-set text:name="Foo" 
office:value-type="float" office:value="0" 
style:data-style-name="N0">0</text:variable-set></text:p>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:p text:style-name="Standard"/>
+   <text:section text:style-name="Sect1" text:name="Section1" 
text:condition="ooow:Foo EQ 1" text:is-hidden="false" text:display="condition">
+    <text:p text:style-name="P1">Abc</text:p>
+    <table:table table:name="Table1" table:style-name="Table1">
+     <table:table-column table:style-name="Table1.A"/>
+     <table:table-column table:style-name="Table1.B"/>
+     <text:soft-page-break/>
+     <table:table-row>
+      <table:table-cell table:style-name="Table1.A1" 
office:value-type="string">
+       <text:p text:style-name="P2">d</text:p>
+      </table:table-cell>
+      <table:table-cell table:style-name="Table1.B1" 
office:value-type="string">
+       <text:p text:style-name="P2">e</text:p>
+      </table:table-cell>
+     </table:table-row>
+     <table:table-row>
+      <table:table-cell table:style-name="Table1.A2" 
office:value-type="string">
+       <text:p text:style-name="P2">f</text:p>
+      </table:table-cell>
+      <table:table-cell table:style-name="Table1.B2" 
office:value-type="string">
+       <text:p text:style-name="P2">g</text:p>
+      </table:table-cell>
+     </table:table-row>
+    </table:table>
+    <text:p text:style-name="P1"><text:soft-page-break/>xyz</text:p>
+   </text:section>
+   <text:p text:style-name="P1"/>
+  </office:text>
+ </office:body>
+</office:document>
diff --git a/sw/qa/extras/layout/layout.cxx b/sw/qa/extras/layout/layout.cxx
index 6c01a32bcaaf..ea03eef254de 100644
--- a/sw/qa/extras/layout/layout.cxx
+++ b/sw/qa/extras/layout/layout.cxx
@@ -21,6 +21,7 @@
 #include <IDocumentLayoutAccess.hxx>
 #include <IDocumentRedlineAccess.hxx>
 #include <unoframe.hxx>
+#include <fldmgr.hxx>
 
 /// Test to assert layout / rendering result of Writer.
 class SwLayoutWriter : public SwModelTestBase
@@ -807,6 +808,50 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter, 
testFlyHiddenParagraph)
     Scheduler::ProcessEventsToIdle();
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter, testFieldHideSection)
+{
+    createSwDoc("field_hide_section.fodt");
+    SwDoc* pDoc = getSwDoc();
+    CPPUNIT_ASSERT(pDoc);
+
+    xmlDocUniquePtr pXmlDoc = parseLayoutDump();
+    assertXPath(pXmlDoc, "/root/page[1]/body/section/tab/row"_ostr, 1);
+    assertXPath(pXmlDoc, "/root/page[2]/body/section/tab/row"_ostr, 1);
+    assertXPath(pXmlDoc, "/root/page"_ostr, 2);
+    discardDumpedLayout();
+
+    SwWrtShell* pWrtShell = pDoc->GetDocShell()->GetWrtShell();
+    ::std::unique_ptr<SwField> pField(pWrtShell->GetCurField()->CopyField());
+    SwFieldMgr manager(pWrtShell);
+
+    pWrtShell->StartAllAction();
+    manager.UpdateCurField(10000 /*(?)*/, "Foo", "1", std::move(pField));
+    pWrtShell->EndAllAction();
+    Scheduler::ProcessEventsToIdle();
+
+    pXmlDoc = parseLayoutDump();
+    assertXPath(pXmlDoc, "/root/page[1]/body/section/tab/row"_ostr, 2);
+    assertXPath(pXmlDoc, 
"/root/page[1]/body/section/tab/row[1]/infos/bounds"_ostr, "height"_ostr,
+                "0");
+    assertXPath(pXmlDoc, 
"/root/page[1]/body/section/tab/row[2]/infos/bounds"_ostr, "height"_ostr,
+                "0");
+    assertXPath(pXmlDoc, "/root/page[1]/body/section/infos/bounds"_ostr, 
"height"_ostr, "0");
+    // the problem was that there were 3 pages now
+    assertXPath(pXmlDoc, "/root/page"_ostr, 1);
+    discardDumpedLayout();
+
+    pWrtShell->StartAllAction();
+    manager.UpdateCurField(10000 /*(?)*/, "Foo", "0", std::move(pField));
+    pWrtShell->EndAllAction();
+    Scheduler::ProcessEventsToIdle();
+
+    pXmlDoc = parseLayoutDump();
+    assertXPath(pXmlDoc, "/root/page[1]/body/section/tab/row"_ostr, 1);
+    assertXPath(pXmlDoc, "/root/page[2]/body/section/tab/row"_ostr, 1);
+    assertXPath(pXmlDoc, "/root/page"_ostr, 2);
+    discardDumpedLayout();
+}
+
 CPPUNIT_TEST_FIXTURE(SwLayoutWriter, TestTdf134272)
 {
     createSwDoc("tdf134472.odt");
diff --git a/sw/source/core/layout/trvlfrm.cxx 
b/sw/source/core/layout/trvlfrm.cxx
index 4537c6c0a9f0..9a609321ac17 100644
--- a/sw/source/core/layout/trvlfrm.cxx
+++ b/sw/source/core/layout/trvlfrm.cxx
@@ -1738,6 +1738,11 @@ void SwFrame::MakeValidZeroHeight()
         aRectFnSet.SetHeight(area, 0);
     }
     ShrinkFrame(aRectFnSet.GetHeight(getFrameArea()));
+    if (IsLayoutFrame()) // ShrinkFrame might do nothing!
+    {
+        SwFrameAreaDefinition::FrameAreaWriteAccess area(*this);
+        aRectFnSet.SetHeight(area, 0);
+    }
     setFrameAreaSizeValid(true);
     setFramePrintAreaValid(true);
     setFrameAreaPositionValid(false);

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