graphicsdeviceinterface/gdi/tgdi/TPALETTE.CPP
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     1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include "TTYPES.H"
       
    17 
       
    18 #define UNUSED_VAR(a) a = a
       
    19 
       
    20 TestPalette::TestPalette(CTTypes* aTest):
       
    21 	iPalette(NULL), iPalette2(NULL),
       
    22 	iTest(aTest)
       
    23 	{}
       
    24 
       
    25 TestPalette::~TestPalette()
       
    26 	{
       
    27 	}
       
    28 
       
    29 /** 
       
    30 	TestPalette::Test
       
    31 	
       
    32 	Method to test the functionality within the CPalette class
       
    33 	Called from the TTypes test script
       
    34 */
       
    35 void TestPalette::Test()
       
    36 	{
       
    37 	_LIT(general,"General");
       
    38 	iTest->INFO_PRINTF1(general);
       
    39 	TestGeneral();
       
    40 	_LIT(defaults,"Defaults");
       
    41 	iTest->INFO_PRINTF1(defaults);
       
    42 	//TestDefaults();
       
    43 	_LIT(getData,"Get Data");
       
    44 	iTest->INFO_PRINTF1(getData);
       
    45 	//TestGetPtr();
       
    46 	}
       
    47 
       
    48 /** 
       
    49 	TestPalette::TestGeneral
       
    50 	
       
    51 	Spawn a new CPalette object & test basic calls to retrieve number of entries, add colours, etc
       
    52 */
       
    53 void TestPalette::TestGeneral()
       
    54 	{
       
    55 	const TInt numcolors=50;
       
    56 	TRAPD(ret,iPalette=CPalette::NewL(numcolors));
       
    57     UNUSED_VAR(ret);
       
    58 	iTest->TEST(iPalette->Entries()==numcolors);
       
    59 	for(TInt colcount=0;colcount<numcolors;colcount++)
       
    60 		{
       
    61 		TRgb color(colcount,0,0);
       
    62 		iPalette->SetEntry(colcount,color);
       
    63 		iTest->TEST(iPalette->GetEntry(colcount)==color);
       
    64 		}
       
    65 	for(TInt checkcount=0;checkcount<numcolors;checkcount++)
       
    66 		{
       
    67 		TRgb color(checkcount,0,0);
       
    68 		iTest->TEST(iPalette->GetEntry(checkcount)==color);
       
    69 		}
       
    70 	iPalette->Clear();
       
    71 	TRgb black(0,0,0);
       
    72 	for(TInt clearcount=0;clearcount<numcolors;clearcount++)
       
    73 		iTest->TEST(iPalette->GetEntry(clearcount)==black);
       
    74 	for(TInt nearcount=0;nearcount<5;nearcount++)
       
    75 		{
       
    76 		TRgb color(nearcount*60,0,0);
       
    77 		iPalette->SetEntry(nearcount,color);
       
    78 		iTest->TEST(iPalette->GetEntry(nearcount)==color);
       
    79 		}
       
    80 	for(TInt approxcount=0;approxcount<5;approxcount++)
       
    81 		{
       
    82 		TRgb color(approxcount*60,0,0);
       
    83 		TRgb approxl(approxcount*59,0,0);
       
    84 		TRgb approxh(approxcount*61,0,0);
       
    85 		TRgb nearest=iPalette->NearestEntry(approxl);
       
    86 		iTest->TEST(nearest==color);
       
    87 		nearest=iPalette->NearestEntry(approxh);
       
    88 		iTest->TEST(nearest==color);
       
    89 		}
       
    90 	delete iPalette;
       
    91 	iPalette = NULL;
       
    92 	}
       
    93 
       
    94 /** 
       
    95 	TestPalette::TestDefaults
       
    96 	
       
    97 	Test creation of default colour palettes for supported/un-supported display modes
       
    98 	Called from the TTypes test script
       
    99 */
       
   100 void TestPalette::TestDefaults()
       
   101 	{
       
   102 	TRAPD(ret,iPalette=CPalette::NewDefaultL(ENone));
       
   103 	iTest->TEST2(ret, KErrNotSupported);
       
   104 	TRAP(ret,iPalette=CPalette::NewDefaultL(EColor16M));
       
   105 	iTest->TEST2(ret, KErrNotSupported);
       
   106 	TRAP(ret,iPalette=CPalette::NewDefaultL(EColor16MU));
       
   107 	iTest->TEST2(ret, KErrNotSupported);
       
   108 	TRAP(ret,iPalette=CPalette::NewDefaultL(ERgb));
       
   109 	iTest->TEST2(ret, KErrNotSupported);
       
   110 	TRAP(ret,iPalette=CPalette::NewDefaultL(EGray2));
       
   111 	iTest->TEST(iPalette->GetEntry(0)==TRgb::Gray2(0));
       
   112 	iTest->TEST(iPalette->GetEntry(1)==TRgb::Gray2(1));
       
   113 	iTest->TEST(iPalette->Entries()==2);
       
   114 	delete iPalette;
       
   115 	TRAP(ret,iPalette=CPalette::NewDefaultL(EGray4));
       
   116 	for(TInt g4=0;g4<4;g4++)
       
   117 		iTest->TEST(iPalette->GetEntry(g4)==TRgb::Gray4(g4));
       
   118 	iTest->TEST(iPalette->Entries()==4);
       
   119 	delete iPalette;
       
   120 	TRAP(ret,iPalette=CPalette::NewDefaultL(EGray16));
       
   121 	for(TInt g16=0;g16<16;g16++)
       
   122 		iTest->TEST(iPalette->GetEntry(g16)==TRgb::Gray16(g16));
       
   123 	iTest->TEST(iPalette->Entries()==16);
       
   124 	delete iPalette;
       
   125 	TRAP(ret,iPalette=CPalette::NewDefaultL(EGray256));
       
   126 	for(TInt g256=0;g256<256;g256++)
       
   127 		iTest->TEST(iPalette->GetEntry(g256)==TRgb::Gray256(g256));
       
   128 	iTest->TEST(iPalette->Entries()==256);
       
   129 	delete iPalette;
       
   130 	TRAP(ret,iPalette=CPalette::NewDefaultL(EColor16));
       
   131 	for (TInt c16 = 0; c16 < 16; c16++)
       
   132 		iTest->TEST(iPalette->GetEntry(c16)==TRgb::Color16(c16));
       
   133 	iTest->TEST(iPalette->Entries()==16);
       
   134 	delete iPalette;
       
   135 	TRAP(ret,iPalette=CPalette::NewDefaultL(EColor256));
       
   136 	for (TInt c256 = 0; c256 < 256; c256++)
       
   137 		iTest->TEST(iPalette->GetEntry(c256)==TRgb::Color256(c256));
       
   138 	iTest->TEST(iPalette->Entries()==256);
       
   139 	delete iPalette;
       
   140 	iPalette = NULL;
       
   141 	}
       
   142 
       
   143 /** 
       
   144 	TestPalette::TestGetPtr
       
   145 	
       
   146 	Test the GetDataPtr() method in CPalette, to retrieve palette entries for a specified colour
       
   147 	
       
   148 	Called from the TTypes test script
       
   149 */
       
   150 void TestPalette::TestGetPtr()
       
   151 	{
       
   152 	TRAPD(ret,iPalette2=CTestPalette::NewL());
       
   153     UNUSED_VAR(ret);
       
   154 	iTest->TEST(iPalette2->TestGetPtr());
       
   155 	TInt colorNum;
       
   156 	for(colorNum=0;colorNum<CTestPalette::eNumColors;++colorNum)
       
   157 		{
       
   158 		TRgb color(colorNum,colorNum,colorNum);
       
   159 		iPalette2->SetEntry(colorNum,color);
       
   160 		}
       
   161 	TPtr8 ptr(NULL,0);
       
   162 	iPalette2->GetDataPtr(0,CTestPalette::eNumColors,ptr);
       
   163 	const TUint8 maxValue=CTestPalette::eNumColors-1;
       
   164 	TInt ii;
       
   165 	for(ii=0;ii<4*CTestPalette::eNumColors;++ii)
       
   166 		{
       
   167 		TUint8 value=ptr[ii];
       
   168 		if (value!=0 && ((ii + 1) % 4)) //skip alpha channel
       
   169 			ptr[ii]=STATIC_CAST(TUint8,maxValue-value);
       
   170 		}	
       
   171 	for(colorNum=1;colorNum<maxValue;++colorNum)
       
   172 		iTest->TEST(iPalette2->GetEntry(colorNum)==TRgb::Gray256(maxValue-colorNum));
       
   173 	delete iPalette2;
       
   174 	iPalette2 = NULL;
       
   175 	}
       
   176 
       
   177 /** 
       
   178 	CTestPalette::TestGetPtr
       
   179 	
       
   180 	Part of TestPalette::TestGetPtr, retrieves a descriptor from CPalette containing entries for a given colour 
       
   181 	& checks parameters are legal
       
   182 	Returns boolean indiciating whether the GetDataPtr was successful or not
       
   183 */
       
   184 TBool CTestPalette::TestGetPtr()
       
   185 	{
       
   186 	TPtr8 ptr(NULL,0);
       
   187 	TUint32* data=REINTERPRET_CAST(TUint32*,iArray);
       
   188 	TInt start;
       
   189 	TInt length;
       
   190 	for(start=0;start<eNumColors;++start)
       
   191 		{
       
   192 		for(length=1;length<eNumColors-start;++length)
       
   193 			{
       
   194 			TInt len=sizeof(TRgb)*length;
       
   195 			GetDataPtr(start,length,ptr);
       
   196 			if (&ptr[0]!=REINTERPRET_CAST(TUint8*,data+start) || ptr.Length()!=len || ptr.MaxLength()!=len)
       
   197 				return EFalse;
       
   198 			}
       
   199 		}
       
   200 	return ETrue;
       
   201 	}