tdf#147818 EMF+ Fix restoring clipping states

With previous implementation the clipping restoring with EmfPlusRecordTypeRestore
was implemented wrongly as it is only taken to account
the shape of clipping (state.getClipPolyPolygon) and doesn't
take if clipping was even enabled (state.getClipPolyPolygonActive).

Additionally the changing states should be made by using method:
wmfemfhelper::HandleNewClipRegion() and not directly.

The similar implementation was applied also to EmfPlusRecordTypeGetDC.

Additionally the clipping for
EmfPlusRecordTypeSetClipRect
EmfPlusRecordTypeSetClipPath
EmfPlusRecordTypeSetClipRegion
was fixed, as initially the clipping is disabled (state.getClipPolyPolygonActive)
and the clipping shape is empty (state.getClipPolyPolygon).
It means that combination other than EmfPlusCombineModeReplace,
was not working correctly.

With this implementation, if Clipping is disabled, then treat clip combining
in special way.

Change-Id: I258bda64e8bfdade7f47ffc7518bf04b7340344f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132415
Tested-by: Jenkins
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>

3 files changed, 66 insertions, 0 deletions

diff --git a/emfio/qa/cppunit/emf/EmfImportTest.cxx b/emfio/qa/cppunit/emf/EmfImportTest.cxx
index fce8961a849a..0f2816962a91 100644
--- a/emfio/qa/cppunit/emf/EmfImportTest.cxx
+++ b/emfio/qa/cppunit/emf/EmfImportTest.cxx
@@ -63,6 +63,8 @@ class Test : public test::BootstrapFixture, public XmlTestTools, public unotest:
     void TestSetArcDirection();
     void TestDrawPolyLine16WithClip();
     void TestFillRegion();
+    void TestEmfPlusGetDC();
+    void TestEmfPlusSave();
     void TestExtTextOutOpaqueAndClipTransform();
 
     void TestBitBltStretchBltWMF();
@@ -106,6 +108,8 @@ public:
     CPPUNIT_TEST(TestSetArcDirection);
     CPPUNIT_TEST(TestDrawPolyLine16WithClip);
     CPPUNIT_TEST(TestFillRegion);
+    CPPUNIT_TEST(TestEmfPlusGetDC);
+    CPPUNIT_TEST(TestEmfPlusSave);
     CPPUNIT_TEST(TestExtTextOutOpaqueAndClipTransform);
 
     CPPUNIT_TEST(TestBitBltStretchBltWMF);
@@ -828,6 +832,68 @@ void Test::TestPolylinetoCloseStroke()
     assertXPath(pDocument, aXPathPrefix + "polygonhairline[2]", "color", "#000000");
 }
 
+void Test::TestEmfPlusGetDC()
+{
+    // tdf#147818 EMF+ records: GetDC, DrawPath, FillRects
+    Primitive2DSequence aSequence = parseEmf(u"/emfio/qa/cppunit/emf/data/TestEmfPlusGetDC.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 + "textsimpleportion", "text", "sd CCCCCCCCCCCCCCC");
+    assertXPath(pDocument, aXPathPrefix + "textsimpleportion", "fontcolor", "#000000");
+
+    assertXPath(pDocument, aXPathPrefix + "group", 5);
+    assertXPath(
+        pDocument, aXPathPrefix + "group[4]/textsimpleportion", "text",
+        "Getttttttttttttttttttttttttttttt, uuuu: \"eeeeeeeeeeeeeeeeeeeeeee-7acd04a3953b\")");
+    assertXPath(pDocument, aXPathPrefix + "group[5]/textsimpleportion", "text",
+                "TTTTTTTTTTTTTTTTTTTTTTTTTTTTT, trackId: 55)");
+    assertXPath(pDocument, aXPathPrefix + "group[5]/textsimpleportion", "fontcolor", "#000000");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor", 6);
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[1]/polypolygon", "path",
+                "m105.78125 "
+                "776.111111111111h3878.64583333333l458.385416666667-493.888888888889v-176."
+                "388888888889h-4337.03125v670.277777777778");
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[1]", "color", "#ffffff");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[3]/polypolygon", "path",
+                "m2291.92708333333 4550.83333333333h317.34375v-317.5h-317.34375z");
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[3]", "color", "#fcf2e3");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[6]/polypolygon", "path",
+                "m19428.4895833333 6632.22222222222h317.34375v-2398.88888888889h-317.34375z");
+    assertXPath(pDocument, aXPathPrefix + "polypolygoncolor[6]", "color", "#fcf2e3");
+
+    assertXPath(pDocument, aXPathPrefix + "polypolygonstroke", 15);
+}
+
+void Test::TestEmfPlusSave()
+{
+    // tdf#147818 EMF+ records: Save, Restore, SetWorldTransform, FillRects, SetClipRegion
+    Primitive2DSequence aSequence = parseEmf(u"/emfio/qa/cppunit/emf/data/TestEmfPlusSave.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 + "mask/polypolygon", "path", "m0 0h33544v21311h-33544z");
+
+    assertXPath(pDocument, aXPathPrefix + "mask/group/mask/polypolygoncolor/polypolygon", "path",
+                "m327.458333333333 638.222222222222h437007.1875v295555.555555556h-437007.1875z");
+    assertXPath(pDocument, aXPathPrefix + "mask/group/mask/polypolygoncolor", "color", "#ff0cad");
+
+    assertXPath(pDocument, aXPathPrefix + "mask/polypolygoncolor/polypolygon", "path",
+                "m10853.4145539602 7321.41354709201h41952690v29630720h-41952690z");
+    assertXPath(pDocument, aXPathPrefix + "mask/polypolygoncolor", "color", "#00ffad");
+
+    assertXPath(pDocument, aXPathPrefix + "mask/polypolygonstroke/line", "color", "#000000");
+    assertXPath(pDocument, aXPathPrefix + "mask/polypolygonstroke/polypolygon", "path",
+                "m10853.4145539602 7321.41354709201v-2413.87029012044h1979.24116969109");
+}
+
 void Test::TestExtTextOutOpaqueAndClipTransform()
 {
     // tdf#142495 EMF records: SETBKCOLOR, SELECTOBJECT, EXTTEXTOUTW, MODIFYWORLDTRANSFORM, CREATEFONTINDIRECT.
diff --git a/emfio/qa/cppunit/emf/data/TestEmfPlusGetDC.emf b/emfio/qa/cppunit/emf/data/TestEmfPlusGetDC.emf
new file mode 100644
index 000000000000..665364abeefb
--- /dev/null
+++ b/emfio/qa/cppunit/emf/data/TestEmfPlusGetDC.emf
diff --git a/emfio/qa/cppunit/emf/data/TestEmfPlusSave.emf b/emfio/qa/cppunit/emf/data/TestEmfPlusSave.emf
new file mode 100644
index 000000000000..24662233b8cd
--- /dev/null
+++ b/emfio/qa/cppunit/emf/data/TestEmfPlusSave.emf