/* -*- 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 <bitmap/ScanlineTools.hxx>
namespace
{
class ScanlineToolsTest : public CppUnit::TestFixture
{
void ScanlineTransformer_32_ARGB();
void ScanlineTransformer_24_BGR();
void ScanlineTransformer_8bit_Palette();
void ScanlineTransformer_1bit_Palette();
CPPUNIT_TEST_SUITE(ScanlineToolsTest);
CPPUNIT_TEST(ScanlineTransformer_32_ARGB);
CPPUNIT_TEST(ScanlineTransformer_24_BGR);
CPPUNIT_TEST(ScanlineTransformer_8bit_Palette);
CPPUNIT_TEST(ScanlineTransformer_1bit_Palette);
CPPUNIT_TEST_SUITE_END();
};
void ScanlineToolsTest::ScanlineTransformer_32_ARGB()
{
BitmapPalette aPalette;
std::unique_ptr<vcl::bitmap::ScanlineTransformer> pScanlineTransformer
= vcl::bitmap::getScanlineTransformer(32 , aPalette);
std::vector<sal_uInt8> aScanLine(5 * 4 , 0 ); // 5 * 4 BytesPerPixel
pScanlineTransformer->startLine(aScanLine.data());
std::vector<Color> aColors{
Color(ColorAlpha, 255 , 10 , 250 , 120 ), Color(ColorAlpha, 205 , 30 , 230 , 110 ),
Color(ColorAlpha, 155 , 50 , 210 , 100 ), Color(ColorAlpha, 105 , 70 , 190 , 90 ),
Color(ColorAlpha, 55 , 90 , 170 , 80 ),
};
for (Color const & aColor : aColors)
{
pScanlineTransformer->writePixel(aColor);
}
std::vector<sal_uInt8> aExpectedBytes{ 255 , 10 , 250 , 120 , 205 , 30 , 230 , 110 , 155 , 50 ,
210 , 100 , 105 , 70 , 190 , 90 , 55 , 90 , 170 , 80 };
for (size_t i = 0 ; i < aScanLine.size(); ++i)
{
CPPUNIT_ASSERT_EQUAL(int (aExpectedBytes[i]), int (aScanLine[i]));
}
}
void ScanlineToolsTest::ScanlineTransformer_24_BGR()
{
BitmapPalette aPalette;
std::unique_ptr<vcl::bitmap::ScanlineTransformer> pScanlineTransformer
= vcl::bitmap::getScanlineTransformer(24 , aPalette);
std::vector<sal_uInt8> aScanLine(5 * 3 , 0 ); // 5 * 3 BytesPerPixel
pScanlineTransformer->startLine(aScanLine.data());
std::vector<Color> aColors{
Color(ColorTransparency, 0 , 10 , 250 , 120 ), Color(ColorTransparency, 50 , 30 , 230 , 110 ),
Color(ColorTransparency, 100 , 50 , 210 , 100 ), Color(ColorTransparency, 150 , 70 , 190 , 90 ),
Color(ColorTransparency, 200 , 90 , 170 , 80 ),
};
for (Color const & aColor : aColors)
{
pScanlineTransformer->writePixel(aColor);
}
std::vector<sal_uInt8> aExpectedBytes{ 120 , 250 , 10 , 110 , 230 , 30 , 100 , 210 ,
50 , 90 , 190 , 70 , 80 , 170 , 90 };
for (size_t i = 0 ; i < aScanLine.size(); ++i)
{
CPPUNIT_ASSERT_EQUAL(int (aExpectedBytes[i]), int (aScanLine[i]));
}
}
void ScanlineToolsTest::ScanlineTransformer_8bit_Palette()
{
std::vector<Color> aColors{
Color(ColorTransparency, 0 , 10 , 250 , 120 ), Color(ColorTransparency, 50 , 30 , 230 , 110 ),
Color(ColorTransparency, 100 , 50 , 210 , 100 ), Color(ColorTransparency, 150 , 70 , 190 , 90 ),
Color(ColorTransparency, 200 , 90 , 170 , 80 ),
};
BitmapPalette aPalette(256 );
for (size_t i = 0 ; i < aColors.size(); ++i)
aPalette[i] = aColors[i];
std::unique_ptr<vcl::bitmap::ScanlineTransformer> pScanlineTransformer
= vcl::bitmap::getScanlineTransformer(8 , aPalette);
std::vector<sal_uInt8> aScanLine(5 , 0 ); // 5 * 1 BytesPerPixel
pScanlineTransformer->startLine(aScanLine.data());
for (Color const & aColor : aColors)
{
pScanlineTransformer->writePixel(aColor);
}
std::vector<sal_uInt8> aExpectedBytes{ 0 , 1 , 2 , 3 , 4 };
for (size_t i = 0 ; i < aScanLine.size(); ++i)
{
CPPUNIT_ASSERT_EQUAL(int (aExpectedBytes[i]), int (aScanLine[i]));
}
pScanlineTransformer->startLine(aScanLine.data());
for (Color const & rColor : aColors)
{
Color aColor = pScanlineTransformer->readPixel();
CPPUNIT_ASSERT_EQUAL(rColor, aColor);
}
}
void ScanlineToolsTest::ScanlineTransformer_1bit_Palette()
{
std::vector<Color> aColors{
Color(10 , 250 , 120 ), Color(30 , 230 , 110 ), Color(50 , 210 , 100 ), Color(70 , 190 , 90 ),
Color(90 , 170 , 80 ), Color(110 , 150 , 70 ), Color(130 , 130 , 60 ), Color(150 , 110 , 50 ),
Color(170 , 90 , 40 ), Color(190 , 70 , 30 ), Color(210 , 50 , 20 ), Color(230 , 30 , 10 ),
Color(250 , 10 , 0 ),
};
BitmapPalette aPalette(2 );
aPalette[0 ] = Color(10 , 250 , 120 );
aPalette[1 ] = Color(110 , 150 , 70 );
std::unique_ptr<vcl::bitmap::ScanlineTransformer> pScanlineTransformer
= vcl::bitmap::getScanlineTransformer(1 , aPalette);
std::vector<sal_uInt8> aScanLine(2 , 0 ); // 13 * 1/8 BytesPerPixel
pScanlineTransformer->startLine(aScanLine.data());
for (Color const & aColor : aColors)
{
pScanlineTransformer->writePixel(aColor);
}
std::vector<sal_uInt8> aExpectedBytes{
// We expect 3x index 0 and 10x index 1 => 000 111111111
0 x1f, // 0001 1111
0 xf8 // 1111 1000
};
for (size_t i = 0 ; i < aScanLine.size(); ++i)
{
CPPUNIT_ASSERT_EQUAL(int (aExpectedBytes[i]), int (aScanLine[i]));
}
pScanlineTransformer->startLine(aScanLine.data());
std::vector<Color> aColorsExpected{
Color(10 , 250 , 120 ), Color(10 , 250 , 120 ), Color(10 , 250 , 120 ), Color(110 , 150 , 70 ),
Color(110 , 150 , 70 ), Color(110 , 150 , 70 ), Color(110 , 150 , 70 ), Color(110 , 150 , 70 ),
Color(110 , 150 , 70 ), Color(110 , 150 , 70 ), Color(110 , 150 , 70 ), Color(110 , 150 , 70 ),
Color(110 , 150 , 70 ),
};
for (Color const & rColor : aColorsExpected)
{
Color aColor = pScanlineTransformer->readPixel();
CPPUNIT_ASSERT_EQUAL(rColor, aColor);
}
}
} // namespace
CPPUNIT_TEST_SUITE_REGISTRATION(ScanlineToolsTest);
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Messung V0.5 in Prozent C=94 H=84 G=88
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(vorverarbeitet am 2026-06-10)
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