/* -*- 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 <sal/types.h>
#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>
#include <tools/color.hxx>
#include <tools/stream.hxx>

namespace
{

class Test: public CppUnit::TestFixture
{
public:
    void test_asRGBColor();
    void test_readAndWriteStream();
    void test_ApplyTintOrShade();

    CPPUNIT_TEST_SUITE(Test);
    CPPUNIT_TEST(test_asRGBColor);
    CPPUNIT_TEST(test_readAndWriteStream);
    CPPUNIT_TEST(test_ApplyTintOrShade);
    CPPUNIT_TEST_SUITE_END();
};

void Test::test_asRGBColor()
{
    Color aColor;
    aColor = COL_BLACK;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("000000"));

    aColor = COL_WHITE;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("ffffff"));

    aColor = COL_RED;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("800000"));

    aColor = COL_TRANSPARENT;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("ffffff"));

    aColor = COL_BLUE;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("000080"));

    aColor.SetRed(0x12);
    aColor.SetGreen(0x34);
    aColor.SetBlue(0x56);
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("123456"));

    aColor = COL_AUTO;
    CPPUNIT_ASSERT_EQUAL(aColor.AsRGBHexString(), OUString("ffffff"));
}

void Test::test_readAndWriteStream()
{
    SvMemoryStream aStream;
    Color aWriteColor(0x12, 0x34, 0x56);
    Color aReadColor;

    WriteColor(aStream, aWriteColor);

    aStream.Seek(STREAM_SEEK_TO_BEGIN);

    ReadColor(aStream, aReadColor);

    CPPUNIT_ASSERT_EQUAL(sal_uInt8(0x12), aReadColor.GetRed());
    CPPUNIT_ASSERT_EQUAL(sal_uInt8(0x34), aReadColor.GetGreen());
    CPPUNIT_ASSERT_EQUAL(sal_uInt8(0x56), aReadColor.GetBlue());
}

OUString createTintShade(sal_uInt8 nR, sal_uInt8 nG, sal_uInt8 nB, OUString const & sReference, sal_Int16 nTintShade)
{
    Color aColor(nR, nG, nB);
    if (sReference != aColor.AsRGBHexString())
        return OUString();
    aColor.ApplyTintOrShade(nTintShade);
    return aColor.AsRGBHexString();
}

void Test::test_ApplyTintOrShade()
{
    // BLACK reference

    // 5% tint
    CPPUNIT_ASSERT_EQUAL(OUString("0d0d0d"), createTintShade(0x00, 0x00, 0x00, "000000",  500));
    // 15% tint
    CPPUNIT_ASSERT_EQUAL(OUString("262626"), createTintShade(0x00, 0x00, 0x00, "000000",  1500));
    // 25% tint
    CPPUNIT_ASSERT_EQUAL(OUString("404040"), createTintShade(0x00, 0x00, 0x00, "000000",  2500));
    // 50% tint
    CPPUNIT_ASSERT_EQUAL(OUString("808080"), createTintShade(0x00, 0x00, 0x00, "000000",  5000));
    // 100% tint
    CPPUNIT_ASSERT_EQUAL(OUString("ffffff"), createTintShade(0x00, 0x00, 0x00, "000000", 10000));

    // WHITE reference

    // 5% shade
    CPPUNIT_ASSERT_EQUAL(OUString("f2f2f2"), createTintShade(0xff, 0xff, 0xff, "ffffff",   -500));
    // 15% shade
    CPPUNIT_ASSERT_EQUAL(OUString("d9d9d9"), createTintShade(0xff, 0xff, 0xff, "ffffff",  -1500));
    // 25% shade
    CPPUNIT_ASSERT_EQUAL(OUString("bfbfbf"), createTintShade(0xff, 0xff, 0xff, "ffffff",  -2500));
    // 50% shade
    CPPUNIT_ASSERT_EQUAL(OUString("808080"), createTintShade(0xff, 0xff, 0xff, "ffffff",  -5000));
    // 100% shade
    CPPUNIT_ASSERT_EQUAL(OUString("000000"), createTintShade(0xff, 0xff, 0xff, "ffffff", -10000));

    // GREY reference

    // 0% - no change
    CPPUNIT_ASSERT_EQUAL(OUString("808080"), createTintShade(0x80, 0x80, 0x80, "808080",      0));

    // 25% tint
    CPPUNIT_ASSERT_EQUAL(OUString("a0a0a0"), createTintShade(0x80, 0x80, 0x80, "808080",   2500));
    // 50% tint
    //CPPUNIT_ASSERT_EQUAL(OUString("c0c0c0"), createTintShade(0x80, 0x80, 0x80, "808080",   5000));
    // disable for now - a rounding error happens on come platforms..
    // 100% tint
    CPPUNIT_ASSERT_EQUAL(OUString("ffffff"), createTintShade(0x80, 0x80, 0x80, "808080",  10000));

    // 25% shade
    CPPUNIT_ASSERT_EQUAL(OUString("606060"), createTintShade(0x80, 0x80, 0x80, "808080",  -2500));
    // 50% shade
    CPPUNIT_ASSERT_EQUAL(OUString("404040"), createTintShade(0x80, 0x80, 0x80, "808080",  -5000));
    // 100% shade
    CPPUNIT_ASSERT_EQUAL(OUString("000000"), createTintShade(0x80, 0x80, 0x80, "808080", -10000));

}

CPPUNIT_TEST_SUITE_REGISTRATION(Test);

}

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