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path: root/vcl/qa/cppunit/GraphicTest.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/.
 */

#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>

#include <vcl/graph.hxx>
#include <vcl/graphicfilter.hxx>
#include <tools/stream.hxx>
#include <vcl/pngwrite.hxx>

namespace
{
class GraphicTest : public CppUnit::TestFixture
{
    void testUnloadedGraphic();

    CPPUNIT_TEST_SUITE(GraphicTest);
    CPPUNIT_TEST(testUnloadedGraphic);
    CPPUNIT_TEST_SUITE_END();
};

BitmapEx createBitmap()
{
    Bitmap aBitmap(Size(100, 100), 24);
    aBitmap.Erase(COL_LIGHTRED);

    return BitmapEx(aBitmap);
}

void createBitmapAndExportToPNG(SvStream& rStream)
{
    BitmapEx aBitmapEx = createBitmap();

    vcl::PNGWriter aWriter(aBitmapEx);
    aWriter.Write(rStream);

    rStream.Seek(STREAM_SEEK_TO_BEGIN);
}

Graphic makeUnloadedGraphic()
{
    SvMemoryStream aStream;
    GraphicFilter& rGraphicFilter = GraphicFilter::GetGraphicFilter();
    createBitmapAndExportToPNG(aStream);
    return rGraphicFilter.ImportUnloadedGraphic(aStream);
}

void GraphicTest::testUnloadedGraphic()
{
    // make unloaded test graphic
    Graphic aGraphic = makeUnloadedGraphic();
    Graphic aGraphic2 = aGraphic;

    // check available
    CPPUNIT_ASSERT_EQUAL(false, aGraphic.isAvailable());
    CPPUNIT_ASSERT_EQUAL(false, aGraphic2.isAvailable());

    CPPUNIT_ASSERT_EQUAL(true, aGraphic2.makeAvailable());
    CPPUNIT_ASSERT_EQUAL(true, aGraphic.isAvailable());
    CPPUNIT_ASSERT_EQUAL(true, aGraphic2.isAvailable());

    // check GetSizePixel doesn't load graphic
    aGraphic = makeUnloadedGraphic();
    CPPUNIT_ASSERT_EQUAL(false, aGraphic.isAvailable());
    CPPUNIT_ASSERT_EQUAL(100L, aGraphic.GetSizePixel().Width());
    CPPUNIT_ASSERT_EQUAL(100L, aGraphic.GetSizePixel().Height());
    CPPUNIT_ASSERT_EQUAL(false, aGraphic.isAvailable());

    // check GetSizeBytes loads graphic
    CPPUNIT_ASSERT_EQUAL(false, aGraphic.isAvailable());
    CPPUNIT_ASSERT(aGraphic.GetSizeBytes() > 0);
    CPPUNIT_ASSERT_EQUAL(true, aGraphic.isAvailable());
}

} // namespace

CPPUNIT_TEST_SUITE_REGISTRATION(GraphicTest);

CPPUNIT_PLUGIN_IMPLEMENT();

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */