tdf#163720 sw smart justify: fix hyphenated single portion lines

Hyphen length wasn't calculated in single portion lines at shrinking,
because the width of the overhanging line without the hyphen overwrote
the calculated correct line width. This resulted less shrinking, than
needed, also lost hyphen in the PDF export.

Regression from commit 22eac3145ca62d15b47d95f4df60ce38d4f5aa46
"tdf#162220 sw smart justify: fix shrinking for single portion lines".

Follow-up to commit 17eaebee279772b6062ae3448012133897fc71bb
"tdf#119908 sw smart justify: fix justification by shrinking".

Change-Id: I512e7f1f86f80ff6ea3d0b6a0b0db8255f5d0a60
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176207
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>
(cherry picked from commit 42533c94ec1a52c49b2587e53ab55e67fc4a449a)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176223
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
(cherry picked from commit 42d76a89f2730626446cc3bc85cbbaab49bbcb9d)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176229
Tested-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>

3 files changed, 251 insertions, 1 deletions

diff --git a/sw/qa/extras/layout/data/tdf163720.fodt b/sw/qa/extras/layout/data/tdf163720.fodt
new file mode 100644
index 000000000000..7f0fccef95ef
--- /dev/null
+++ b/sw/qa/extras/layout/data/tdf163720.fodt
@@ -0,0 +1,209 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
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+   <config:config-item config:name="ShowRedlineChanges" config:type="boolean">true</config:config-item>
+   <config:config-item config:name="InBrowseMode" config:type="boolean">false</config:config-item>
+  </config:config-item-set>
+  <config:config-item-set config:name="ooo:configuration-settings">
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+   <config:config-item config:name="PrintPageBackground" config:type="boolean">true</config:config-item>
+   <config:config-item config:name="PrintDrawings" config:type="boolean">true</config:config-item>
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+   <config:config-item config:name="PaintHellOverHeaderFooter" config:type="boolean">true</config:config-item>
+   <config:config-item config:name="PrintGraphics" config:type="boolean">true</config:config-item>
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+   <config:config-item config:name="HyphenateURLs" config:type="boolean">false</config:config-item>
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+   <config:config-item config:name="SubtractFlysAnchoredAtFlys" config:type="boolean">false</config:config-item>
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+   <config:config-item config:name="TabOverflow" config:type="boolean">true</config:config-item>
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+   <config:config-item config:name="PrintPaperFromSetup" config:type="boolean">false</config:config-item>
+   <config:config-item config:name="CurrentDatabaseCommand" config:type="string"/>
+   <config:config-item config:name="CurrentDatabaseDataSource" config:type="string"/>
+   <config:config-item config:name="SaveThumbnail" config:type="boolean">true</config:config-item>
+   <config:config-item config:name="EmbeddedDatabaseName" config:type="string"/>
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+   <config:config-item config:name="RedlineProtectionKey" config:type="base64Binary"/>
+   <config:config-item config:name="TabsRelativeToIndent" config:type="boolean">false</config:config-item>
+   <config:config-item config:name="Rsid" config:type="int">576075</config:config-item>
+   <config:config-item config:name="UpdateFromTemplate" config:type="boolean">true</config:config-item>
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+   <config:config-item config:name="SmallCapsPercentage66" config:type="boolean">false</config:config-item>
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+ </office:settings>
+ <office:scripts>
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+   <ooo:libraries xmlns:ooo="http://openoffice.org/2004/office" xmlns:xlink="http://www.w3.org/1999/xlink"/>
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+ </office:scripts>
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+  <style:font-face style:name="Liberation Serif" svg:font-family="&apos;Liberation Serif&apos;" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans" svg:font-family="&apos;Noto Sans&apos;" style:font-family-generic="system" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
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+   <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:writing-mode="lr-tb" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" style:line-break="strict" loext:tab-stop-distance="0cm" style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" loext:hyphenation-keep-type="column" 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" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="5" loext:hyphenation-zone="no-limit"/>
+  </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:paragraph-properties fo:margin-top="0cm" fo:margin-bottom="0cm" style:contextual-spacing="false" fo:text-align="start" style:justify-single-word="false" fo:orphans="2" fo:widows="2" fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" loext:hyphenation-keep-type="column" style:writing-mode="lr-tb"/>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-family="&apos;Liberation Serif&apos;" style:font-family-generic="roman" style:font-pitch="variable" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="5" loext:hyphenation-zone="360"/>
+  </style:style>
+  <style:style style:name="Text_20_body" style:display-name="Text body" style:family="paragraph" style:parent-style-name="Standard" style:class="text">
+   <style:paragraph-properties fo:margin-top="0cm" fo:margin-bottom="0.247cm" style:contextual-spacing="false" fo:line-height="115%"/>
+  </style:style>
+  <style:style style:name="Header_20_and_20_Footer" style:display-name="Header and Footer" style:family="paragraph" style:parent-style-name="Standard" style:class="extra">
+   <style:paragraph-properties text:number-lines="false" text:line-number="0">
+    <style:tab-stops>
+     <style:tab-stop style:position="8.89cm" style:type="center"/>
+     <style:tab-stop style:position="17.78cm" style:type="right"/>
+    </style:tab-stops>
+   </style:paragraph-properties>
+  </style:style>
+  <style:default-page-layout>
+   <style:page-layout-properties style:writing-mode="lr-tb" style:layout-grid-standard-mode="true"/>
+  </style:default-page-layout>
+ </office:styles>
+ <office:automatic-styles>
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+   <style:paragraph-properties fo:text-align="start" style:justify-single-word="false" text:number-lines="false" text:line-number="0" style:writing-mode="lr-tb"/>
+  </style:style>
+  <style:style style:name="P2" style:family="paragraph" style:parent-style-name="Standard">
+   <style:paragraph-properties fo:text-align="justify" style:justify-single-word="false" fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" loext:hyphenation-keep-type="column" style:writing-mode="lr-tb"/>
+   <style:text-properties fo:hyphenate="true" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="5" loext:hyphenation-zone="567" loext:hyphenation-compound-remain-char-count="2"/>
+  </style:style>
+  <style:page-layout style:name="pm1">
+   <style:page-layout-properties fo:page-width="21.59cm" fo:page-height="27.94cm" style:num-format="1" style:print-orientation="portrait" fo:margin-top="1.016cm" fo:margin-bottom="0.762cm" fo:margin-left="1.905cm" fo:margin-right="1.905cm" style:writing-mode="lr-tb" style:layout-grid-color="#c0c0c0" style:layout-grid-lines="143" style:layout-grid-base-height="0.176cm" style:layout-grid-ruby-height="0cm" style:layout-grid-mode="none" style:layout-grid-ruby-below="false" style:layout-grid-print="false" style:layout-grid-display="false" style:layout-grid-base-width="0.423cm" style:layout-grid-snap-to="true" style:footnote-max-height="0cm" loext:margin-gutter="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:header-footer-properties fo:min-height="0.986cm" fo:margin-left="0cm" fo:margin-right="0cm" fo:margin-bottom="0.885cm" style:dynamic-spacing="true"/>
+   </style:header-style>
+   <style:footer-style/>
+  </style:page-layout>
+  <style:style style:name="dp1" style:family="drawing-page">
+   <style:drawing-page-properties draw:background-size="full"/>
+  </style:style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1" draw:style-name="dp1">
+   <style:header>
+    <text:p text:style-name="P1"/>
+   </style:header>
+  </style:master-page>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <text:p text:style-name="P2">…… Horatio was was referenced throughout the Complaint and in each of the causes of action in the Complaints.</text:p>
+  </office:text>
+ </office:body>
+</office:document>
diff --git a/sw/qa/extras/layout/layout3.cxx b/sw/qa/extras/layout/layout3.cxx
index 7336cf61cbd1..59d29ff7d574 100644
--- a/sw/qa/extras/layout/layout3.cxx
+++ b/sw/qa/extras/layout/layout3.cxx
@@ -446,6 +446,44 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf162220)
     assertXPath(pXmlDoc, "/root/page/body/txt[1]/SwParaPortion/SwLineLayout[1]/SwGluePortion"_ostr);
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf163720)
+{
+    uno::Reference<linguistic2::XHyphenator> xHyphenator = LinguMgr::GetHyphenator();
+    if (!xHyphenator->hasLocale(lang::Locale(u"en"_ustr, u"US"_ustr, OUString())))
+        return;
+
+    createSwDoc("tdf163720.fodt");
+    // Ensure that all text portions are calculated before testing.
+    SwDocShell* pShell = getSwDocShell();
+
+    // Dump the rendering of the first page as an XML file.
+    std::shared_ptr<GDIMetaFile> xMetaFile = pShell->GetPreviewMetaFile();
+    MetafileXmlDump dumper;
+
+    xmlDocUniquePtr pXmlDoc = dumpAndParse(dumper, *xMetaFile);
+    CPPUNIT_ASSERT(pXmlDoc);
+
+    // Find the first text array action
+    for (size_t nAction = 0; nAction < xMetaFile->GetActionSize(); nAction++)
+    {
+        auto pAction = xMetaFile->GetAction(nAction);
+        if (pAction->GetType() == MetaActionType::TEXTARRAY)
+        {
+            auto pTextArrayAction = static_cast<MetaTextArrayAction*>(pAction);
+            auto pDXArray = pTextArrayAction->GetDXArray();
+
+            // There should be 101 chars on the first line
+            CPPUNIT_ASSERT_EQUAL(size_t(101), pDXArray.size());
+
+            // Assert we are using the expected position for the last char
+            // This was 10093, now 10003, according to the less shrinking,
+            // than needed for the extra hyphen glyph at hyphenation
+            CPPUNIT_ASSERT_LESS(sal_Int32(10010), pDXArray[100]);
+            break;
+        }
+    }
+}
+
 CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, testTdf162725)
 {
     createSwDoc("tdf162725.fodt");
diff --git a/sw/source/core/text/itradj.cxx b/sw/source/core/text/itradj.cxx
index a0cd73365588..0762270fb509 100644
--- a/sw/source/core/text/itradj.cxx
+++ b/sw/source/core/text/itradj.cxx
@@ -418,7 +418,10 @@ void SwTextAdjuster::CalcNewBlock( SwLineLayout *pCurrent,
                 {
                     tools::Long nSpaceAdd = nGluePortionWidth / sal_Int32(nGluePortion);
                     // shrink, if not shrunk line width exceed the set line width
-                    if ( pCurrent->ExtraShrunkWidth() > 0 )
+                    // i.e. if pCurrent->ExtraShrunkWidth() > 0
+                    // tdf#163720 but at hyphenated lines, still nBreakWidth contains the correct
+                    // not shrunk line width (ExtraShrunkWidth + hyphen length), so use that
+                    if ( pCurrent->ExtraShrunkWidth() > nBreakWidth )
                         nBreakWidth = pCurrent->ExtraShrunkWidth();
                     // shrink, if portions exceed the line width
                     tools::Long nSpaceSub = ( nBreakWidth > pCurrent->Width() )