tdf#115639: Handle alignment correctly for multiple paragraph case

I used the wrong calculator method to get the line width.
This commit also fixes the crashes found by crashtest.

Change-Id: I25392f86af912ee54c07b14480d82282210ac346
Reviewed-on: https://gerrit.libreoffice.org/49994Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>

editeng/qa/unit/core-test.cxx

@@ -1957,6 +1957,39 @@ void Test::testHoriAlignIgnoreTrailingWhitespace()
         EditLine* pLine = &pParaPortion->GetLines()[0];
         CPPUNIT_ASSERT_DOUBLES_EQUAL(static_cast<long>(8815), pLine->GetStartPosX(), 10);
     }
+
+    // Test multiple paragraph case
+    {
+        // Set initial text
+        aText = "Some text    \nMore Text   ";
+        aTextLen = aText.getLength();
+        aEditEngine.SetText(aText);
+
+        // Assert changes - text insertion
+        CPPUNIT_ASSERT_EQUAL(static_cast<sal_uLong>(aTextLen - 1), rDoc.GetTextLen());
+        CPPUNIT_ASSERT_EQUAL(OUString("Some text    "), rDoc.GetParaAsString(static_cast<sal_Int32>(0)));
+        CPPUNIT_ASSERT_EQUAL(OUString("More Text   "), rDoc.GetParaAsString(static_cast<sal_Int32>(1)));
+
+        aEditEngine.SetHoriAlignIgnoreTrailingWhitespace(true);
+        std::unique_ptr<SfxItemSet> pSet(new SfxItemSet(aEditEngine.GetEmptyItemSet()));
+        pSet->Put(SvxAdjustItem( SvxAdjust::Center, EE_PARA_JUST ));
+        CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(1), pSet->Count());
+
+        // Select all paragraphs and apply changes
+        ESelection aSelection(0, 0, 0, aTextLen);
+        aEditEngine.QuickSetAttribs(*pSet, aSelection);
+
+        // Get one line paragraphs
+        aEditEngine.SetPaperSize(Size(10000, 6000));
+        CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(1), aEditEngine.GetLineCount(0));
+        CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(1), aEditEngine.GetLineCount(1));
+
+        // Check horizontal position
+        ParaPortion* pParaPortion = aEditEngine.GetParaPortions()[0];
+        CPPUNIT_ASSERT_DOUBLES_EQUAL(static_cast<long>(4527), pParaPortion->GetLines()[0].GetStartPosX(), 50);
+        pParaPortion = aEditEngine.GetParaPortions()[1];
+        CPPUNIT_ASSERT_DOUBLES_EQUAL(static_cast<long>(8815), pParaPortion->GetLines()[0].GetStartPosX(), 50);
+    }
 }
 
 CPPUNIT_TEST_SUITE_REGISTRATION(Test);

editeng/source/editeng/editeng.cxx

@@ -1433,13 +1433,13 @@ sal_uInt32 EditEngine::GetTextHeightNTP() const
     return pImpEditEngine->GetTextHeightNTP();
 }
 
-sal_uInt32 EditEngine::CalcTextWidth(bool bIgnoreTrailingWhiteSpaces)
+sal_uInt32 EditEngine::CalcTextWidth()
 {
 
     if ( !pImpEditEngine->IsFormatted() )
         pImpEditEngine->FormatDoc();
 
-    sal_uInt32 nWidth = !IsVertical() ? pImpEditEngine->CalcTextWidth( true, bIgnoreTrailingWhiteSpaces ) : pImpEditEngine->GetTextHeight();
+    sal_uInt32 nWidth = !IsVertical() ? pImpEditEngine->CalcTextWidth( true ) : pImpEditEngine->GetTextHeight();
      return nWidth;
 }
 

editeng/source/editeng/impedit.hxx

@@ -833,7 +833,7 @@ public:
     sal_uInt32      CalcTextHeight( sal_uInt32* pHeightNTP );
     sal_uInt32      GetTextHeight() const;
     sal_uInt32      GetTextHeightNTP() const;
-    sal_uInt32      CalcTextWidth( bool bIgnoreExtraSpace, bool bIgnoreTrailingWhiteSpaces = false );
+    sal_uInt32      CalcTextWidth( bool bIgnoreExtraSpace );
     sal_uInt32      CalcLineWidth( ParaPortion* pPortion, EditLine* pLine, bool bIgnoreExtraSpace, bool bIgnoreTrailingWhiteSpaces = false );
     sal_Int32       GetLineCount( sal_Int32 nParagraph ) const;
     sal_Int32       GetLineLen( sal_Int32 nParagraph, sal_Int32 nLine ) const;

editeng/source/editeng/impedit2.cxx

@@ -3090,7 +3090,7 @@ sal_uInt32 ImpEditEngine::GetTextHeight() const
     return nCurTextHeight;
 }
 
-sal_uInt32 ImpEditEngine::CalcTextWidth( bool bIgnoreExtraSpace, bool bIgnoreTrailingWhiteSpaces )
+sal_uInt32 ImpEditEngine::CalcTextWidth( bool bIgnoreExtraSpace )
 {
     // If still not formatted and not in the process.
     // Will be brought in the formatting for AutoPageSize.
@@ -3137,7 +3137,7 @@ sal_uInt32 ImpEditEngine::CalcTextWidth( bool bIgnoreExtraSpace, bool bIgnoreTra
                     }
                 }
                 nCurWidth += GetXValue( rLRItem.GetRight() );
-                nCurWidth += CalcLineWidth( pPortion, &rLine, bIgnoreExtraSpace, bIgnoreTrailingWhiteSpaces );
+                nCurWidth += CalcLineWidth( pPortion, &rLine, bIgnoreExtraSpace );
                 if ( nCurWidth > nMaxWidth )
                 {
                     nMaxWidth = nCurWidth;

editeng/source/editeng/impedit3.cxx

@@ -1515,7 +1515,7 @@ bool ImpEditEngine::CreateLines( sal_Int32 nPara, sal_uInt32 nStartPosY )
             {
                 long n;
                 if(IsHoriAlignIgnoreTrailingWhitespace())
-                    n = ( nMaxLineWidth - CalcTextWidth( true, true ) ) / 2;
+                    n = ( nMaxLineWidth - CalcLineWidth( pParaPortion, pLine, false, true ) ) / 2;
                 else
                     n = ( nMaxLineWidth - aTextSize.Width() ) / 2;
                 n += nStartX;  // Indentation is kept.
@@ -1528,7 +1528,7 @@ bool ImpEditEngine::CreateLines( sal_Int32 nPara, sal_uInt32 nStartPosY )
                 // the blank must not be displayed!
                 long n;
                 if(IsHoriAlignIgnoreTrailingWhitespace())
-                    n = nMaxLineWidth - CalcTextWidth( true, true );
+                    n = nMaxLineWidth - CalcLineWidth( pParaPortion, pLine, false, true );
                 else
                     n = nMaxLineWidth - aTextSize.Width();
                 n += nStartX;  // Indentation is kept.

include/editeng/editeng.hxx

@@ -273,7 +273,7 @@ public:
     sal_uInt32      GetTextLen() const;
     sal_uInt32      GetTextHeight() const;
     sal_uInt32      GetTextHeightNTP() const;
-    sal_uInt32      CalcTextWidth( bool bIgnoreTrailingWhiteSpaces = false );
+    sal_uInt32      CalcTextWidth();
 
     OUString        GetText( sal_Int32 nParagraph ) const;
     sal_Int32       GetTextLen( sal_Int32 nParagraph ) const;