vcl: Test for PngReader - reading of various PNG formats

Change-Id: I2469751806e03c791c1882a32c31c090d7dac39f

7 files changed, 189 insertions, 0 deletions

diff --git a/vcl/CppunitTest_vcl_png_test.mk b/vcl/CppunitTest_vcl_png_test.mk
new file mode 100644
index 000000000000..1f88209313a0
--- /dev/null
+++ b/vcl/CppunitTest_vcl_png_test.mk
@@ -0,0 +1,52 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# 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/.
+#
+
+$(eval $(call gb_CppunitTest_CppunitTest,vcl_png_test))
+
+$(eval $(call gb_CppunitTest_add_exception_objects,vcl_png_test, \
+    vcl/qa/cppunit/png/PngFilterTest \
+))
+
+$(eval $(call gb_CppunitTest_set_include,vcl_png_test,\
+    $$(INCLUDE) \
+    -I$(SRCDIR)/vcl/inc \
+))
+
+$(eval $(call gb_CppunitTest_use_libraries,vcl_png_test, \
+	comphelper \
+	cppu \
+	cppuhelper \
+	sal \
+    svt \
+	test \
+	tl \
+	unotest \
+	vcl \
+	utl \
+	$(gb_UWINAPI) \
+))
+
+$(eval $(call gb_CppunitTest_use_api,vcl_png_test,\
+    udkapi \
+    offapi \
+))
+
+$(eval $(call gb_CppunitTest_use_ure,vcl_png_test))
+$(eval $(call gb_CppunitTest_use_vcl,vcl_png_test))
+
+$(eval $(call gb_CppunitTest_use_components,vcl_png_test,\
+    configmgr/source/configmgr \
+    i18npool/util/i18npool \
+    ucb/source/core/ucb1 \
+    unotools/util/utl \
+))
+
+$(eval $(call gb_CppunitTest_use_configuration,vcl_png_test))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index 97e20f013f8e..3bc4f648d488 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -109,6 +109,7 @@ $(eval $(call gb_Module_add_check_targets,vcl,\
 	CppunitTest_vcl_app_test \
 	$(if $(MERGELIBS),,CppunitTest_vcl_wmf_test) \
 	CppunitTest_vcl_jpeg_read_write_test \
+	CppunitTest_vcl_png_test \
 ))
 
 
diff --git a/vcl/qa/cppunit/png/PngFilterTest.cxx b/vcl/qa/cppunit/png/PngFilterTest.cxx
new file mode 100644
index 000000000000..14e32a6a2ebd
--- /dev/null
+++ b/vcl/qa/cppunit/png/PngFilterTest.cxx
@@ -0,0 +1,136 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <test/bootstrapfixture.hxx>
+#include <vcl/filter/PngReader.hxx>
+#include <vcl/bitmapaccess.hxx>
+
+using namespace css;
+
+class PngFilterTest : public test::BootstrapFixture
+{
+    OUString maDataUrl;
+
+    OUString getFullUrl(const OUString& sFileName)
+    {
+        return m_directories.getURLFromSrc(maDataUrl) + sFileName;
+    }
+
+public:
+    PngFilterTest() :
+        BootstrapFixture(true, false),
+        maDataUrl("/vcl/qa/cppunit/png/data/")
+    {}
+
+    void testPng();
+
+    CPPUNIT_TEST_SUITE(PngFilterTest);
+    CPPUNIT_TEST(testPng);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+void PngFilterTest::testPng()
+{
+    for (const OUString& aFileName: { OUString("rect-1bit-pal.png") })
+    {
+        SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+        Graphic aGraphic;
+        vcl::PngReader aPngReader(aFileStream);
+        aPngReader.Read(aGraphic);
+
+        Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
+        {
+            Bitmap::ScopedReadAccess pAccess(aBitmap);
+            CPPUNIT_ASSERT_EQUAL(32, int(pAccess->GetBitCount()));
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Width());
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Height());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(0,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(3,3)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(3,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(0,3)).GetColor());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00000000), Color(pAccess->GetPixel(1,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00000000), Color(pAccess->GetPixel(1,2)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00000000), Color(pAccess->GetPixel(2,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00000000), Color(pAccess->GetPixel(2,2)).GetColor());
+        }
+    }
+    for (const OUString& aFileName: { OUString("color-rect-8bit-RGB.png"), OUString("color-rect-4bit-pal.png") })
+    {
+        SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+        Graphic aGraphic;
+        vcl::PngReader aPngReader(aFileStream);
+        aPngReader.Read(aGraphic);
+
+        Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
+        {
+            Bitmap::ScopedReadAccess pAccess(aBitmap);
+            CPPUNIT_ASSERT_EQUAL(32, int(pAccess->GetBitCount()));
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Width());
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Height());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(0,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(3,3)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(3,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFFFF), Color(pAccess->GetPixel(0,3)).GetColor());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FF0000), Color(pAccess->GetPixel(1,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x0000FF00), Color(pAccess->GetPixel(1,2)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x000000FF), Color(pAccess->GetPixel(2,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x00FFFF00), Color(pAccess->GetPixel(2,2)).GetColor());
+        }
+    }
+    for (const OUString& aFileName: { OUString("alpha-rect-8bit-RGBA.png") })
+    {
+        SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+        Graphic aGraphic;
+        vcl::PngReader aPngReader(aFileStream);
+        aPngReader.Read(aGraphic);
+
+        Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
+        {
+            Bitmap::ScopedReadAccess pAccess(aBitmap);
+            CPPUNIT_ASSERT_EQUAL(32, int(pAccess->GetBitCount()));
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Width());
+            CPPUNIT_ASSERT_EQUAL(4l, pAccess->Height());
+
+            printf("%08X\n", Color(pAccess->GetPixel(1,1)).GetColor());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x80FFFFFF), Color(pAccess->GetPixel(0,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x80FFFFFF), Color(pAccess->GetPixel(3,3)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x80FFFFFF), Color(pAccess->GetPixel(3,0)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x80FFFFFF), Color(pAccess->GetPixel(0,3)).GetColor());
+
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x40FF0000), Color(pAccess->GetPixel(1,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0xC000FF00), Color(pAccess->GetPixel(1,2)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0xC00000FF), Color(pAccess->GetPixel(2,1)).GetColor());
+            CPPUNIT_ASSERT_EQUAL(ColorData(0x40FFFF00), Color(pAccess->GetPixel(2,2)).GetColor());
+        }
+    }
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(PngFilterTest);
+
+CPPUNIT_PLUGIN_IMPLEMENT();
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/qa/cppunit/png/data/alpha-rect-8bit-RGBA.png b/vcl/qa/cppunit/png/data/alpha-rect-8bit-RGBA.png
new file mode 100644
index 000000000000..1e90e1a6cfed
--- /dev/null
+++ b/vcl/qa/cppunit/png/data/alpha-rect-8bit-RGBA.png
diff --git a/vcl/qa/cppunit/png/data/color-rect-4bit-pal.png b/vcl/qa/cppunit/png/data/color-rect-4bit-pal.png
new file mode 100644
index 000000000000..740eede512d1
--- /dev/null
+++ b/vcl/qa/cppunit/png/data/color-rect-4bit-pal.png
diff --git a/vcl/qa/cppunit/png/data/color-rect-8bit-RGB.png b/vcl/qa/cppunit/png/data/color-rect-8bit-RGB.png
new file mode 100644
index 000000000000..727859d8a7c1
--- /dev/null
+++ b/vcl/qa/cppunit/png/data/color-rect-8bit-RGB.png
diff --git a/vcl/qa/cppunit/png/data/rect-1bit-pal.png b/vcl/qa/cppunit/png/data/rect-1bit-pal.png
new file mode 100644
index 000000000000..cf7ac3e7c31b
--- /dev/null
+++ b/vcl/qa/cppunit/png/data/rect-1bit-pal.png