1 files changed, 114 insertions, 0 deletions
diff --git a/vcl/qa/cppunit/BitmapExTest.cxx b/vcl/qa/cppunit/BitmapExTest.cxx
new file mode 100644
index 000000000..a0a6b3096
--- /dev/null
+++ b/vcl/qa/cppunit/BitmapExTest.cxx
@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <vcl/bitmapex.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <bitmap/BitmapWriteAccess.hxx>
+#include <svdata.hxx>
+#include <salinst.hxx>
+
+namespace
+{
+class BitmapExTest : public CppUnit::TestFixture
+{
+    void testGetPixelColor24_8();
+    void testGetPixelColor32();
+    void testTransformBitmapEx();
+
+    CPPUNIT_TEST_SUITE(BitmapExTest);
+    CPPUNIT_TEST(testGetPixelColor24_8);
+    CPPUNIT_TEST(testGetPixelColor32);
+    CPPUNIT_TEST(testTransformBitmapEx);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+void BitmapExTest::testGetPixelColor24_8()
+{
+    Bitmap aBitmap(Size(3, 3), vcl::PixelFormat::N24_BPP);
+    {
+        BitmapScopedWriteAccess pWriteAccess(aBitmap);
+        pWriteAccess->Erase(Color(ColorTransparency, 0x00, 0x00, 0xFF, 0x00));
+    }
+    AlphaMask aMask(Size(3, 3));
+    {
+        AlphaScopedWriteAccess pWriteAccess(aMask);
+        pWriteAccess->Erase(Color(ColorTransparency, 0x00, 0xAA, 0xAA, 0xAA));
+    }
+
+    BitmapEx aBitmapEx(aBitmap, aMask);
+
+    CPPUNIT_ASSERT_EQUAL(Color(ColorTransparency, 0xAA, 0x00, 0xFF, 0x00),
+                         aBitmapEx.GetPixelColor(0, 0));
+}
+
+void BitmapExTest::testGetPixelColor32()
+{
+    // Check backend capabilities and return from the test successfully
+    // if the backend doesn't support 32-bit bitmap
+    if (!ImplGetSVData()->mpDefInst->supportsBitmap32())
+        return;
+
+    Bitmap aBitmap(Size(3, 3), vcl::PixelFormat::N32_BPP);
+    {
+        BitmapScopedWriteAccess pWriteAccess(aBitmap);
+        pWriteAccess->Erase(Color(ColorTransparency, 0xAA, 0x00, 0xFF, 0x00));
+    }
+
+    BitmapEx aBitmapEx(aBitmap);
+
+    CPPUNIT_ASSERT_EQUAL(Color(ColorTransparency, 0xAA, 0x00, 0xFF, 0x00),
+                         aBitmapEx.GetPixelColor(0, 0));
+}
+
+void BitmapExTest::testTransformBitmapEx()
+{
+    Bitmap aBitmap(Size(16, 16), vcl::PixelFormat::N24_BPP);
+    {
+        BitmapScopedWriteAccess pWriteAccess(aBitmap);
+        pWriteAccess->Erase(COL_WHITE);
+        for (int i = 0; i < 8; ++i)
+        {
+            for (int j = 0; j < 8; ++j)
+            {
+                pWriteAccess->SetPixel(i, j, COL_BLACK);
+            }
+        }
+    }
+    BitmapEx aBitmapEx(aBitmap);
+
+    basegfx::B2DHomMatrix aMatrix;
+    aMatrix.rotate(M_PI / 2);
+    BitmapEx aTransformed = aBitmapEx.TransformBitmapEx(16, 16, aMatrix);
+    aBitmap = aTransformed.GetBitmap();
+    Bitmap::ScopedReadAccess pAccess(aBitmap);
+    for (int i = 0; i < 16; ++i)
+    {
+        for (int j = 0; j < 16; ++j)
+        {
+            BitmapColor aColor = pAccess->GetPixel(i, j);
+            std::stringstream ss;
+            ss << "Color is expected to be white or black, is '" << aColor.AsRGBHexString() << "'";
+            // Without the accompanying fix in place, this test would have failed with:
+            // - Expression: aColor == COL_WHITE || aColor == COL_BLACK
+            // - Color is expected to be white or black, is 'bfbfbf'
+            // i.e. smoothing introduced noise for a simple 90 deg rotation.
+            CPPUNIT_ASSERT_MESSAGE(ss.str(), aColor == COL_WHITE || aColor == COL_BLACK);
+        }
+    }
+}
+
+} // namespace
+
+CPPUNIT_TEST_SUITE_REGISTRATION(BitmapExTest);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */