vcl: add "previous" search to VectorGraphicSearch

Previous moves backwards in the search matches.

Change-Id: I88d402e0b8cb9dc4fd93e7f1ce5b08fb42aadd06
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95381
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit e20440effc7a47c8a5e8ef0943e6872cd9b3646a)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95929
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/vcl/qa/cppunit/VectorGraphicSearchTest.cxx b/vcl/qa/cppunit/VectorGraphicSearchTest.cxx
index 01022a3fe225..7962c23f4e8f 100644
--- a/vcl/qa/cppunit/VectorGraphicSearchTest.cxx
+++ b/vcl/qa/cppunit/VectorGraphicSearchTest.cxx
@@ -26,9 +26,11 @@ class VectorGraphicSearchTest : public test::BootstrapFixtureBase
     }
 
     void test();
+    void testNextPrevious();
 
     CPPUNIT_TEST_SUITE(VectorGraphicSearchTest);
     CPPUNIT_TEST(test);
+    CPPUNIT_TEST(testNextPrevious);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -81,6 +83,44 @@ void VectorGraphicSearchTest::test()
     CPPUNIT_ASSERT_DOUBLES_EQUAL(6381.04, aRectangles[3].getMaxY(), 1E-2);
 }
 
+// Test next and previous work as expected to move
+// between search matches.
+void VectorGraphicSearchTest::testNextPrevious()
+{
+    OUString aURL = getFullUrl("Pangram.pdf");
+    SvFileStream aStream(aURL, StreamMode::READ);
+    GraphicFilter& rGraphicFilter = GraphicFilter::GetGraphicFilter();
+    Graphic aGraphic = rGraphicFilter.ImportUnloadedGraphic(aStream);
+    aGraphic.makeAvailable();
+
+    VectorGraphicSearch aSearch(aGraphic);
+    CPPUNIT_ASSERT_EQUAL(true, aSearch.search("lazy"));
+
+    // next - first match found
+    CPPUNIT_ASSERT_EQUAL(true, aSearch.next());
+    CPPUNIT_ASSERT_EQUAL(34, aSearch.index());
+
+    // next - second match found
+    CPPUNIT_ASSERT_EQUAL(true, aSearch.next());
+    CPPUNIT_ASSERT_EQUAL(817, aSearch.index());
+
+    // next - not found, index unchanged
+    CPPUNIT_ASSERT_EQUAL(false, aSearch.next());
+    CPPUNIT_ASSERT_EQUAL(817, aSearch.index());
+
+    // previous - first match
+    CPPUNIT_ASSERT_EQUAL(true, aSearch.previous());
+    CPPUNIT_ASSERT_EQUAL(34, aSearch.index());
+
+    // previous - not found, index unchanged
+    CPPUNIT_ASSERT_EQUAL(false, aSearch.previous());
+    CPPUNIT_ASSERT_EQUAL(34, aSearch.index());
+
+    // next - second match found
+    CPPUNIT_ASSERT_EQUAL(true, aSearch.next());
+    CPPUNIT_ASSERT_EQUAL(817, aSearch.index());
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(VectorGraphicSearchTest);
 
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