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diff --git a/vcl/qa/cppunit/png/PngFilterTest.cxx b/vcl/qa/cppunit/png/PngFilterTest.cxx
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+/* -*- 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 <sal/config.h>
+
+#include <string_view>
+
+#include <test/bootstrapfixture.hxx>
+#include <tools/stream.hxx>
+#include <vcl/filter/PngImageReader.hxx>
+#include <vcl/BitmapReadAccess.hxx>
+#include <vcl/alpha.hxx>
+#include <vcl/graphicfilter.hxx>
+
+using namespace css;
+
+class PngFilterTest : public test::BootstrapFixture
+{
+ OUString maDataUrl;
+
+ OUString getFullUrl(std::u16string_view sFileName)
+ {
+ return m_directories.getURLFromSrc(maDataUrl) + sFileName;
+ }
+
+public:
+ PngFilterTest()
+ : BootstrapFixture(true, false)
+ , maDataUrl("/vcl/qa/cppunit/png/data/")
+ {
+ }
+
+ void testPng();
+ void testMsGifInPng();
+
+ CPPUNIT_TEST_SUITE(PngFilterTest);
+ CPPUNIT_TEST(testPng);
+ CPPUNIT_TEST(testMsGifInPng);
+ CPPUNIT_TEST_SUITE_END();
+};
+
+void PngFilterTest::testPng()
+{
+ for (const OUString& aFileName : { OUString("rect-1bit-pal.png") })
+ {
+ SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+ vcl::PngImageReader aPngReader(aFileStream);
+ BitmapEx aBitmapEx;
+ aPngReader.read(aBitmapEx);
+
+ Bitmap aBitmap = aBitmapEx.GetBitmap();
+ {
+ Bitmap::ScopedReadAccess pAccess(aBitmap);
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Width());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Height());
+
+ if (pAccess->GetBitCount() == 24 || pAccess->GetBitCount() == 32)
+ {
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 3));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 3));
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(1, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(1, 2));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(2, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(2, 2));
+ }
+ else
+ {
+ CPPUNIT_ASSERT_MESSAGE("Bitmap is not 24 or 32 bit.", false);
+ }
+ }
+ }
+
+ OUString aFilenames[] = {
+ OUString("color-rect-8bit-RGB.png"),
+ OUString("color-rect-8bit-RGB-interlaced.png"),
+ OUString("color-rect-4bit-pal.png"),
+ };
+
+ for (const OUString& aFileName : aFilenames)
+ {
+ SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+ vcl::PngImageReader aPngReader(aFileStream);
+ BitmapEx aBitmapEx;
+ aPngReader.read(aBitmapEx);
+
+ Bitmap aBitmap = aBitmapEx.GetBitmap();
+ {
+ Bitmap::ScopedReadAccess pAccess(aBitmap);
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Width());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Height());
+ if (pAccess->GetBitCount() == 24 || pAccess->GetBitCount() == 32)
+ {
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 3));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 3));
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(1, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0xFF, 0x00, 0x00),
+ pAccess->GetPixel(1, 2));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0xFF, 0x00),
+ pAccess->GetPixel(2, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0x00, 0x00),
+ pAccess->GetPixel(2, 2));
+ }
+ else
+ {
+ CPPUNIT_ASSERT_MESSAGE("Bitmap is not 24 or 32 bit.", false);
+ }
+ }
+ }
+ for (const OUString& aFileName : { OUString("alpha-rect-8bit-RGBA.png") })
+ {
+ SvFileStream aFileStream(getFullUrl(aFileName), StreamMode::READ);
+
+ vcl::PngImageReader aPngReader(aFileStream);
+ BitmapEx aBitmapEx;
+ aPngReader.read(aBitmapEx);
+
+ Bitmap aBitmap = aBitmapEx.GetBitmap();
+ {
+ Bitmap::ScopedReadAccess pAccess(aBitmap);
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Width());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAccess->Height());
+
+ if (pAccess->GetBitCount() == 24)
+ {
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 3));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(3, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x00),
+ pAccess->GetPixel(0, 3));
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0x00, 0x00, 0x00),
+ pAccess->GetPixel(1, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0xFF, 0x00, 0x00),
+ pAccess->GetPixel(1, 2));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0xFF, 0x00),
+ pAccess->GetPixel(2, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0x00, 0x00),
+ pAccess->GetPixel(2, 2));
+
+ AlphaMask aAlpha = aBitmapEx.GetAlpha();
+ {
+ AlphaMask::ScopedReadAccess pAlphaAccess(aAlpha);
+ CPPUNIT_ASSERT_EQUAL(sal_uInt16(8), pAlphaAccess->GetBitCount());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAlphaAccess->Width());
+ CPPUNIT_ASSERT_EQUAL(tools::Long(4), pAlphaAccess->Height());
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x80, 0x00),
+ pAlphaAccess->GetPixel(0, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x80, 0x00),
+ pAlphaAccess->GetPixel(3, 3));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x80, 0x00),
+ pAlphaAccess->GetPixel(3, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x80, 0x00),
+ pAlphaAccess->GetPixel(0, 3));
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x40, 0x00),
+ pAlphaAccess->GetPixel(1, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0xC0, 0x00),
+ pAlphaAccess->GetPixel(1, 2));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0xC0, 0x00),
+ pAlphaAccess->GetPixel(2, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0x40, 0x00),
+ pAlphaAccess->GetPixel(2, 2));
+ }
+ }
+ else if (pAccess->GetBitCount() == 32)
+ {
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x80),
+ pAccess->GetPixel(0, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x80),
+ pAccess->GetPixel(3, 3));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x80),
+ pAccess->GetPixel(3, 0));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0xFF, 0x80),
+ pAccess->GetPixel(0, 3));
+
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0x00, 0x00, 0x40),
+ pAccess->GetPixel(1, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0xFF, 0x00, 0xC0),
+ pAccess->GetPixel(1, 2));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0x00, 0x00, 0xFF, 0xC0),
+ pAccess->GetPixel(2, 1));
+ CPPUNIT_ASSERT_EQUAL(BitmapColor(ColorTransparency, 0xFF, 0xFF, 0x00, 0x40),
+ pAccess->GetPixel(2, 2));
+ }
+ else
+ {
+ CPPUNIT_ASSERT_MESSAGE("Bitmap is not 24 or 32 bit.", false);
+ }
+ }
+ }
+}
+
+void PngFilterTest::testMsGifInPng()
+{
+ Graphic aGraphic;
+ const OUString aURL(getFullUrl(u"ms-gif.png"));
+ SvFileStream aFileStream(aURL, StreamMode::READ);
+ GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+ ErrCode aResult = rFilter.ImportGraphic(aGraphic, aURL, aFileStream);
+ CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, aResult);
+ CPPUNIT_ASSERT(aGraphic.IsGfxLink());
+ // The image is technically a PNG, but it has an animated Gif as a chunk (Microsoft extension).
+ CPPUNIT_ASSERT_EQUAL(GfxLinkType::NativeGif, aGraphic.GetSharedGfxLink()->GetType());
+ CPPUNIT_ASSERT(aGraphic.IsAnimated());
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(PngFilterTest);
+
+CPPUNIT_PLUGIN_IMPLEMENT();
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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