tdf#134225 Chart view: fix moved date label

outside from pie chart. Do not need to check the
sector size of a pie slice, before best fit algorithm,
so we can use the CENTER position as a start position
of BEST_FIT.

Completion of c66cb6d6e4a843dc7c7d06e1c2c0723a6ff85fc5
(tdf#134029 Chart view: enable to move data label)

Change-Id: Ie1a53784e7df2887282155113bf8bb607cdb09e9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/96945
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>
(cherry picked from commit 57fedb272cfcad3436142dbe9eac2870e3c3e3d2)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/100054
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>

3 files changed, 27 insertions, 13 deletions

diff --git a/chart2/qa/extras/chart2import.cxx b/chart2/qa/extras/chart2import.cxx
index 3e0704c876ae..5a896f89a18d 100644
--- a/chart2/qa/extras/chart2import.cxx
+++ b/chart2/qa/extras/chart2import.cxx
@@ -161,6 +161,7 @@ public:
     void testTdf119138MissingAutoTitleDeleted();
     void testStockChartShiftedCategoryPosition();
     void testTdf133376();
+    void testTdf134225();
     void testTdf91250();
 
     CPPUNIT_TEST_SUITE(Chart2ImportTest);
@@ -271,6 +272,7 @@ public:
     CPPUNIT_TEST(testTdf119138MissingAutoTitleDeleted);
     CPPUNIT_TEST(testStockChartShiftedCategoryPosition);
     CPPUNIT_TEST(testTdf133376);
+    CPPUNIT_TEST(testTdf134225);
     CPPUNIT_TEST(testTdf91250);
 
     CPPUNIT_TEST_SUITE_END();
@@ -2527,6 +2529,30 @@ void Chart2ImportTest::testTdf133376()
     CPPUNIT_ASSERT_DOUBLES_EQUAL(5269, aLabelPosition.Y, 30);
 }
 
+void Chart2ImportTest::testTdf134225()
+{
+    load("/chart2/qa/extras/data/xlsx/", "tdf134225.xlsx");
+    Reference<chart::XChartDocument> xChartDoc(getChartDocFromSheet(0, mxComponent),
+        UNO_QUERY_THROW);
+
+    Reference<drawing::XDrawPageSupplier> xDrawPageSupplier(xChartDoc, UNO_QUERY_THROW);
+    Reference<drawing::XDrawPage> xDrawPage(xDrawPageSupplier->getDrawPage(), UNO_SET_THROW);
+    Reference<drawing::XShapes> xShapes(xDrawPage->getByIndex(0), UNO_QUERY_THROW);
+    Reference<drawing::XShape> xDataPointLabel1(getShapeByName(xShapes,
+        "CID/MultiClick/CID/D=0:CS=0:CT=0:Series=0:DataLabels=:DataLabel=0"), UNO_SET_THROW);
+    CPPUNIT_ASSERT(xDataPointLabel1.is());
+    awt::Point aLabelPosition1 = xDataPointLabel1->getPosition();
+
+    Reference<drawing::XShape> xDataPointLabel2(getShapeByName(xShapes,
+        "CID/MultiClick/CID/D=0:CS=0:CT=0:Series=0:DataLabels=:DataLabel=1"), UNO_SET_THROW);
+    CPPUNIT_ASSERT(xDataPointLabel2.is());
+    awt::Point aLabelPosition2 = xDataPointLabel2->getPosition();
+
+    // Check the distance between the position of the 1st data point label and the second one
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(1800, sal_Int32(aLabelPosition2.X - aLabelPosition1.X), 200);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(2123, sal_Int32(aLabelPosition2.Y - aLabelPosition1.Y), 200);
+}
+
 void Chart2ImportTest::testTdf91250()
 {
     load("/chart2/qa/extras/data/docx/", "tdf91250.docx");
diff --git a/chart2/qa/extras/data/xlsx/tdf134225.xlsx b/chart2/qa/extras/data/xlsx/tdf134225.xlsx
new file mode 100644
index 000000000000..ae7bdc66e302
--- /dev/null
+++ b/chart2/qa/extras/data/xlsx/tdf134225.xlsx
diff --git a/chart2/source/view/charttypes/PieChart.cxx b/chart2/source/view/charttypes/PieChart.cxx
index 9032b40977f1..5ab60729cf93 100644
--- a/chart2/source/view/charttypes/PieChart.cxx
+++ b/chart2/source/view/charttypes/PieChart.cxx
@@ -294,19 +294,7 @@ void PieChart::createTextLabelShape(
     //AVOID_OVERLAP is in fact "Best fit" in the UI.
     bool bMovementAllowed = ( nLabelPlacement == css::chart::DataLabelPlacement::AVOID_OVERLAP );
     if( bMovementAllowed )
-    {
-        // Use center for "Best fit" for now. In the future we
-        // may want to implement a real best fit algorithm.
-        // But center is good enough, and close to what Excel
-        // does.
-
-        // Place the label outside if the sector is too small
-        // The threshold is set to 2%, but can be improved by making it a function of
-        // label width and radius too ?
-        double fFrac = fabs( nVal / rParam.mfLogicYSum );
-        nLabelPlacement = ( fFrac <= 0.02 ) ? css::chart::DataLabelPlacement::OUTSIDE :
-            css::chart::DataLabelPlacement::CENTER;
-    }
+        nLabelPlacement = css::chart::DataLabelPlacement::CENTER;
 
     ///for `OUTSIDE` (`INSIDE`) label placements an offset of 150 (-150), in the
     ///radius direction, is added to the final screen position of the label