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minimize implementation

This commit is contained in:
Vogel, Rick 2023-03-24 16:10:36 +01:00
parent 294b795005
commit 5ac7be697a
2 changed files with 53 additions and 126 deletions
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163
src/common/QskRgbValue.h
View File

@ -238,97 +238,97 @@ namespace QskRgb
namespace QskRgb
{
// Converts a HTML #12345678... color hex string to a 0x12345678... integer
// Converts a '#12345678' color hex string to a '0x12345678' unsigned integer
QSK_EXPORT constexpr QRgb fromHexString( const char* const str, const size_t len ) noexcept
{
if ( len < 1 || str[ 0 ] != '#' )
if ( ( len != 9 && len != 7 ) || str[ 0 ] != '#' )
{
return 0;
}
QRgb rgb = 0x00;
QRgb argb = 0xFF;
for ( size_t i = 1; i < len; ++i )
{
switch ( str[ i ] )
{
case '0':
rgb = ( rgb << 4 ) | 0x0;
argb = ( argb << 4 ) | 0x0;
break;
case '1':
rgb = ( rgb << 4 ) | 0x1;
argb = ( argb << 4 ) | 0x1;
break;
case '2':
rgb = ( rgb << 4 ) | 0x2;
argb = ( argb << 4 ) | 0x2;
break;
case '3':
rgb = ( rgb << 4 ) | 0x3;
argb = ( argb << 4 ) | 0x3;
break;
case '4':
rgb = ( rgb << 4 ) | 0x4;
argb = ( argb << 4 ) | 0x4;
break;
case '5':
rgb = ( rgb << 4 ) | 0x5;
argb = ( argb << 4 ) | 0x5;
break;
case '6':
rgb = ( rgb << 4 ) | 0x6;
argb = ( argb << 4 ) | 0x6;
break;
case '7':
rgb = ( rgb << 4 ) | 0x7;
argb = ( argb << 4 ) | 0x7;
break;
case '8':
rgb = ( rgb << 4 ) | 0x8;
argb = ( argb << 4 ) | 0x8;
break;
case '9':
rgb = ( rgb << 4 ) | 0x9;
argb = ( argb << 4 ) | 0x9;
break;
case 'A':
case 'a':
rgb = ( rgb << 4 ) | 0xA;
argb = ( argb << 4 ) | 0xA;
break;
case 'B':
case 'b':
rgb = ( rgb << 4 ) | 0xB;
argb = ( argb << 4 ) | 0xB;
break;
case 'C':
case 'c':
rgb = ( rgb << 4 ) | 0xC;
argb = ( argb << 4 ) | 0xC;
break;
case 'D':
case 'd':
rgb = ( rgb << 4 ) | 0xD;
argb = ( argb << 4 ) | 0xD;
break;
case 'E':
case 'e':
rgb = ( rgb << 4 ) | 0xE;
argb = ( argb << 4 ) | 0xE;
break;
case 'F':
case 'f':
rgb = ( rgb << 4 ) | 0xF;
argb = ( argb << 4 ) | 0xF;
break;
default:
rgb = ( rgb << 4 ) | 0x0;
argb = ( argb << 4 ) | 0x0;
break;
}
}
return rgb;
return argb;
}
namespace literals
@ -366,7 +366,8 @@ namespace QskRgb
constexpr QRgb parse_hex_literal_x()
{
static_assert( C == 'x', "invalid hex prefix character" );
return parse_hex_literal_h< 0, Cs... >();
constexpr auto alpha = 0xFF;
return parse_hex_literal_h< alpha, Cs... >();
}
template< char C, char... Cs >
@ -382,26 +383,17 @@ namespace QskRgb
QSK_EXPORT constexpr QRgb operator""_rgba(
const char* const str, const size_t len ) noexcept
{
constexpr auto max = 9;
const auto argb = static_cast< int >( fromHexString( str, len ) );
const auto r = ( argb >> ( len == max ? 24 : 16 ) ) & 0xFF;
const auto g = ( argb >> ( len == max ? 16 : 8 ) ) & 0xFF;
const auto b = ( argb >> ( len == max ? 8 : 0 ) ) & 0xFF;
const auto a = ( len == max ? argb & 0xFF : 0xFF );
return qRgba( r, g, b, a );
constexpr auto rrggbbaa = 9;
const auto c = fromHexString( str, len );
return len == rrggbbaa ? qRgba( qAlpha( c ), qRed( c ), qGreen( c ), qBlue( c ) )
: qRgba( qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) );
}
// converts a hex string from '#[AA]RRGGBB' to '0xAARRGGBB' integer
QSK_EXPORT constexpr QRgb operator""_argb(
const char* const str, const size_t len ) noexcept
{
constexpr auto max = 9;
const auto argb = static_cast< int >( fromHexString( str, len ) );
const auto r = ( argb >> 16 ) & 0xFF;
const auto g = ( argb >> 8 ) & 0xFF;
const auto b = ( argb >> 0 ) & 0xFF;
const auto a = ( len == max ? argb >> 24 : 0xFF ) & 0xFF;
return qRgba( r, g, b, a );
return fromHexString( str, len );
}
// converts a hex literal from '0xRRGGBB[AA]' to '0xAARRGGBB' integer
@ -412,23 +404,10 @@ namespace QskRgb
constexpr auto rrggbbaa = 10;
static_assert( sizeof...( Cs ) == rrggbb || sizeof...( Cs ) == rrggbbaa,
"invalid color literal length" );
constexpr auto rgba = parse_hex_literal_0< Cs... >();
if constexpr ( sizeof...( Cs ) == rrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = 0xFF;
return qRgba( r, g, b, a );
}
if constexpr ( sizeof...( Cs ) == rrggbbaa )
{
const auto r = ( rgba >> ( 6 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto a = ( rgba >> ( 0 * 4 ) ) & 0xFF;
return qRgba( r, g, b, a );
}
constexpr auto c = parse_hex_literal_0< Cs... >();
return sizeof...( Cs ) == rrggbbaa
? qRgba( qAlpha( c ), qRed( c ), qGreen( c ), qBlue( c ) )
: qRgba( qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) );
}
// converts a hex literal from '0x[AA]RRGGBB' to '0xAARRGGBB' integer
@ -439,23 +418,7 @@ namespace QskRgb
constexpr auto aarrggbb = 10;
static_assert( sizeof...( Cs ) == rrggbb || sizeof...( Cs ) == aarrggbb,
"invalid color literal length" );
constexpr auto rgba = parse_hex_literal_0< Cs... >();
if constexpr ( sizeof...( Cs ) == rrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = 0xFF;
return qRgba( r, g, b, a );
}
if constexpr ( sizeof...( Cs ) == aarrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = ( rgba >> ( 6 * 4 ) ) & 0xFF;
return qRgba( r, g, b, a );
}
return parse_hex_literal_0< Cs... >();
}
}
@ -465,26 +428,18 @@ namespace QskRgb
QSK_EXPORT constexpr QColor operator""_rgba(
const char* const str, const size_t len ) noexcept
{
constexpr auto max = 9;
const auto argb = static_cast< int >( fromHexString( str, len ) );
const auto r = ( argb >> ( len == max ? 24 : 16 ) ) & 0xFF;
const auto g = ( argb >> ( len == max ? 16 : 8 ) ) & 0xFF;
const auto b = ( argb >> ( len == max ? 8 : 0 ) ) & 0xFF;
const auto a = ( len == max ? argb & 0xFF : 0xFF );
return { r, g, b, a };
constexpr auto rrggbbaa = 9;
const auto c = fromHexString( str, len );
return len == rrggbbaa ? QColor{ qAlpha( c ), qRed( c ), qGreen( c ), qBlue( c ) }
: QColor{ qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) };
}
// converts a hex string from '#[AA]RRGGBB' to a QColor
QSK_EXPORT constexpr QColor operator""_argb(
const char* const str, const size_t len ) noexcept
{
constexpr auto max = 9;
const auto argb = static_cast< int >( fromHexString( str, len ) );
const auto r = ( argb >> 16 ) & 0xFF;
const auto g = ( argb >> 8 ) & 0xFF;
const auto b = ( argb >> 0 ) & 0xFF;
const auto a = ( len == max ? argb >> 24 : 0xFF ) & 0xFF;
return { r, g, b, a };
const auto c = fromHexString( str, len );
return QColor{ qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) };
}
// converts a hex literal from '0xRRGGBB[AA]' to a QColor
@ -495,23 +450,10 @@ namespace QskRgb
constexpr auto rrggbbaa = 10;
static_assert( sizeof...( Cs ) == rrggbb || sizeof...( Cs ) == rrggbbaa,
"invalid color literal length" );
constexpr auto rgba = parse_hex_literal_0< Cs... >();
if constexpr ( sizeof...( Cs ) == rrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = 0xFF;
return { r, g, b, a };
}
if constexpr ( sizeof...( Cs ) == rrggbbaa )
{
const auto r = ( rgba >> ( 6 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto a = ( rgba >> ( 0 * 4 ) ) & 0xFF;
return { r, g, b, a };
}
constexpr auto c = parse_hex_literal_0< Cs... >();
return sizeof...( Cs ) == rrggbbaa
? QColor{ qAlpha( c ), qRed( c ), qGreen( c ), qBlue( c ) }
: QColor{ qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) };
}
// converts a hex literal from '0x[AA]RRGGBB' to a QColor
@ -522,23 +464,8 @@ namespace QskRgb
constexpr auto aarrggbb = 10;
static_assert( sizeof...( Cs ) == rrggbb || sizeof...( Cs ) == aarrggbb,
"invalid color literal length" );
constexpr auto rgba = parse_hex_literal_0< Cs... >();
if constexpr ( sizeof...( Cs ) == rrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = 0xFF;
return { r, g, b, a };
}
if constexpr ( sizeof...( Cs ) == aarrggbb )
{
const auto r = ( rgba >> ( 4 * 4 ) ) & 0xFF;
const auto g = ( rgba >> ( 2 * 4 ) ) & 0xFF;
const auto b = ( rgba >> ( 0 * 4 ) ) & 0xFF;
const auto a = ( rgba >> ( 6 * 4 ) ) & 0xFF;
return { r, g, b, a };
}
constexpr auto c = parse_hex_literal_0< Cs... >();
return QColor{ qRed( c ), qGreen( c ), qBlue( c ), qAlpha( c ) };
}
}
}

16
tests/test_QskRgbLiterals.cpp
View File

@ -35,15 +35,15 @@ void QskRgbLiterals::parsing_data()
QTest::newRow( "" ) << "" << ( QRgb ) 0;
QTest::newRow( "#" ) << "#" << ( QRgb ) 0;
QTest::newRow( "#1" ) << "#1" << ( QRgb ) 0x1;
QTest::newRow( "#12" ) << "#12" << ( QRgb ) 0x12;
QTest::newRow( "#123" ) << "#123" << ( QRgb ) 0x123;
QTest::newRow( "#1234" ) << "#1234" << ( QRgb ) 0x1234;
QTest::newRow( "#12345" ) << "#12345" << ( QRgb ) 0x12345;
QTest::newRow( "#123456" ) << "#123456" << ( QRgb ) 0x123456;
QTest::newRow( "#1234567" ) << "#1234567" << ( QRgb ) 0x1234567;
QTest::newRow( "#1" ) << "#1" << ( QRgb ) 0;
QTest::newRow( "#12" ) << "#12" << ( QRgb ) 0;
QTest::newRow( "#123" ) << "#123" << ( QRgb ) 0;
QTest::newRow( "#1234" ) << "#1234" << ( QRgb ) 0;
QTest::newRow( "#12345" ) << "#12345" << ( QRgb ) 0;
QTest::newRow( "#123456" ) << "#123456" << ( QRgb ) 0xFF123456;
QTest::newRow( "#1234567" ) << "#1234567" << ( QRgb ) 0;
QTest::newRow( "#12345678" ) << "#12345678" << ( QRgb ) 0x12345678;
QTest::newRow( "#123456789" ) << "#123456789" << ( QRgb ) 0x23456789;
QTest::newRow( "#123456789" ) << "#123456789" << ( QRgb ) 0;
}
void QskRgbLiterals::parsing()