tdf#123321 Fix DOC/DOCX export bug which made some lines disappear

* Fix the wrong calculation of SdrPathObj (line) extent while exporting
to .doc and .docx formats. This resolves tdf#123321 which cause some
lines to disappear after save and reload. This fix does not break
tdf#91687
* added tests to make sure this does not happen again, based on the
.doc file provided in Bugzilla
* Loading the bad exported file in MS Word is OK, but it does not work
in LibreOffice, and some of the lines will be hidden. This needs
additional work.

The regression came from d72e0cadceb0b43928a9b4f18d75c9d5d30afdda

Change-Id: Ic5a7af4d29df741204c50590728542e674ee9f91
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/119116
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

4 files changed, 44 insertions, 0 deletions

diff --git a/include/svx/svdopath.hxx b/include/svx/svdopath.hxx
index 05ac6c34820f..fc7280670c97 100644
--- a/include/svx/svdopath.hxx
+++ b/include/svx/svdopath.hxx
@@ -87,6 +87,7 @@ public:
     virtual sal_uInt32 GetHdlCount() const override;
     virtual void AddToHdlList(SdrHdlList& rHdlList) const override;
     virtual void AddToPlusHdlList(SdrHdlList& rHdlList, SdrHdl& rHdl) const override;
+    virtual const tools::Rectangle& GetLogicRect() const override;
 
     // special drag methods
     virtual bool hasSpecialDrag() const override;
diff --git a/svx/source/svdraw/svdopath.cxx b/svx/source/svdraw/svdopath.cxx
index 0338e80b7f6c..b13b586e707d 100644
--- a/svx/source/svdraw/svdopath.cxx
+++ b/svx/source/svdraw/svdopath.cxx
@@ -2059,6 +2059,19 @@ void SdrPathObj::AddToPlusHdlList(SdrHdlList& rHdlList, SdrHdl& rHdl) const
     }
 }
 
+// tdf#123321: Make sure that SdrPathObj (e.g. line) has big enough extent for
+// visibility. This is realised by ensuring GetLogicRect() is the same as
+// GetSnapRect() for the SdrPathObj. Other SdrTextObj objects like
+// SdrObjCustomShape will still use a different version of this method that
+// does not consider the rotation. Otherwise, the rotated SdrObjCustomShape
+// would become mistakenly larger after save and reload (tdf#91687).
+// The invokation of the GetLogicRect() method that caused tdf#123321 was in
+// PlcDrawObj::WritePlc().
+const tools::Rectangle &SdrPathObj::GetLogicRect() const
+{
+    return GetSnapRect();
+}
+
 // dragging
 
 bool SdrPathObj::hasSpecialDrag() const
diff --git a/sw/qa/extras/ww8export/data/shapes-line-ellipse.doc b/sw/qa/extras/ww8export/data/shapes-line-ellipse.doc
new file mode 100644
index 000000000000..184881c00a6d
--- /dev/null
+++ b/sw/qa/extras/ww8export/data/shapes-line-ellipse.doc
diff --git a/sw/qa/extras/ww8export/ww8export2.cxx b/sw/qa/extras/ww8export/ww8export2.cxx
index 3dc101b6f626..bf751ee46426 100644
--- a/sw/qa/extras/ww8export/ww8export2.cxx
+++ b/sw/qa/extras/ww8export/ww8export2.cxx
@@ -414,6 +414,36 @@ DECLARE_WW8EXPORT_TEST(testTdf108072, "tdf108072.doc")
     CPPUNIT_ASSERT_EQUAL(true, getProperty<bool>(xTableRows->getByIndex(0), "IsSplitAllowed"));
 }
 
+DECLARE_WW8EXPORT_TEST(testTdf123321, "shapes-line-ellipse.doc")
+{
+    // These are the 3 lines in which 1st and 3rd one were disappearing before
+    uno::Reference<drawing::XShape> l1 = getShape(7);
+    uno::Reference<drawing::XShape> l2 = getShape(8);
+    uno::Reference<drawing::XShape> l3 = getShape(9);
+
+    // first line (smallest)
+    // Fails without the fix: Expected: 423, Actual: 2
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(423), l1->getSize().Height);
+    // Fails without the fix: Expected: 0, Actual: 2
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0), l1->getSize().Width);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(7908), l1->getPosition().X);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(37), l1->getPosition().Y);
+
+    // second line (larger)
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(2542), l2->getSize().Height);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(2), l2->getSize().Width);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(7916), l2->getPosition().X);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(289), l2->getPosition().Y);
+
+    // third line (largest)
+    // Fails without the fix: Expected: 7027, Actual: 2
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(7027), l3->getSize().Height);
+    // Fails without the fix: Expected: 0, Actual: 2
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0), l3->getSize().Width);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(7911), l3->getPosition().X);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(231), l3->getPosition().Y);
+}
+
 DECLARE_WW8EXPORT_TEST(testTdf91687, "tdf91687.doc")
 {
     // Exported Watermarks were resized