tdf#143876 EMF+ Add DrawClosedCurve and FillClosedCurve support

With this commit EmfPlusDrawClosedCurve and EmfPlusFillClosedCurve
support was added. There is still missing Filling Mode (it
is always set to Even Odd Alternate:
https://en.wikipedia.org/wiki/Even%E2%80%93odd_rule )
and Tension support for spline bends.
The graphics is displayed as Tension=0.
A value of Tension=0 specifies that the spline is a sequence of straight lines.
As the value increases, the curve becomes more rounded.
For more information, see [SPLINE77] and [PETZOLD].

Change-Id: Ibccfd584e3d55cd0ca8a29da9f450916d56705d5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134333
Tested-by: Jenkins
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>

2 files changed, 48 insertions, 0 deletions

diff --git a/emfio/qa/cppunit/emf/EmfImportTest.cxx b/emfio/qa/cppunit/emf/EmfImportTest.cxx
index 6c5e77bb67dd..cf999c2dff6e 100644
--- a/emfio/qa/cppunit/emf/EmfImportTest.cxx
+++ b/emfio/qa/cppunit/emf/EmfImportTest.cxx
@@ -68,6 +68,7 @@ class Test : public test::BootstrapFixture, public XmlTestTools, public unotest:
     void TestEmfPlusGetDC();
     void TestEmfPlusSave();
     void TestEmfPlusDrawPathWithMiterLimit();
+    void TestEmfPlusFillClosedCurve();
     void TestExtTextOutOpaqueAndClipTransform();
 
     void TestBitBltStretchBltWMF();
@@ -117,6 +118,7 @@ public:
     CPPUNIT_TEST(TestEmfPlusGetDC);
     CPPUNIT_TEST(TestEmfPlusSave);
     CPPUNIT_TEST(TestEmfPlusDrawPathWithMiterLimit);
+    CPPUNIT_TEST(TestEmfPlusFillClosedCurve);
     CPPUNIT_TEST(TestExtTextOutOpaqueAndClipTransform);
 
     CPPUNIT_TEST(TestBitBltStretchBltWMF);
@@ -1069,6 +1071,52 @@ void Test::TestEmfPlusDrawPathWithMiterLimit()
     assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[3]/stroke", 0);
 }
 
+void Test::TestEmfPlusFillClosedCurve()
+{
+    // tdf#143876 EMF+ records: SetWorldTransform, FillClosedCurve, DrawClosedCurve
+    Primitive2DSequence aSequence
+        = parseEmf(u"emfio/qa/cppunit/emf/data/TestEmfPlusFillClosedCurve.emf");
+    CPPUNIT_ASSERT_EQUAL(1, static_cast<int>(aSequence.getLength()));
+    drawinglayer::Primitive2dXmlDump dumper;
+    xmlDocUniquePtr pDocument = dumper.dumpAndParse(Primitive2DContainer(aSequence));
+    CPPUNIT_ASSERT(pDocument);
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor", 2);
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[1]", "color", "#808080");
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[1]/polypolygon", "path",
+                "m18202.841744243 13758.4401790456 1269.96570308672 "
+                "3175.02465670283-2539.93140617345-2116.68310446856h2539.93140617345l-2539."
+                "93140617345 2116.68310446856z");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke", 2);
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/line", "color", "#000000");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/line", "width", "10");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/line", "linejoin", "Miter");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/line", "miterangle", "3");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/line", "linecap", "BUTT");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[1]/polypolygon", "path",
+                "m18202.841744243 13758.4401790456 1269.96570308672 "
+                "3175.02465670283-2539.93140617345-2116.68310446856h2539.93140617345l-2539."
+                "93140617345 2116.68310446856z");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[2]", "color", "#808080");
+    //TODO Check path with implemented Winding
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[2]/polypolygon", "path",
+                "m22012.7388535032 13758.4401790456 1269.96570308672 "
+                "3175.02465670283-2539.93140617344-2116.68310446856h2539.93140617344l-2539."
+                "93140617344 2116.68310446856z");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/line", "color", "#000000");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/line", "width", "10");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/line", "linejoin", "Miter");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/line", "miterangle", "3");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/line", "linecap", "BUTT");
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke[2]/polypolygon", "path",
+                "m22012.7388535032 13758.4401790456 1269.96570308672 "
+                "3175.02465670283-2539.93140617344-2116.68310446856h2539.93140617344l-2539."
+                "93140617344 2116.68310446856z");
+}
+
 void Test::TestExtTextOutOpaqueAndClipTransform()
 {
     // tdf#142495 EMF records: SETBKCOLOR, SELECTOBJECT, EXTTEXTOUTW, MODIFYWORLDTRANSFORM, CREATEFONTINDIRECT.
diff --git a/emfio/qa/cppunit/emf/data/TestEmfPlusFillClosedCurve.emf b/emfio/qa/cppunit/emf/data/TestEmfPlusFillClosedCurve.emf
new file mode 100644
index 000000000000..ad9140a770d0
--- /dev/null
+++ b/emfio/qa/cppunit/emf/data/TestEmfPlusFillClosedCurve.emf