more operations for QskGradientStops
This commit is contained in:
parent
824c2673a7
commit
7acd0f9c63
|
@ -126,6 +126,12 @@ static inline QColor qskColorAtPosition(
|
|||
s1.color(), s2.color(), ( pos - s1.position() ) / dp );
|
||||
}
|
||||
|
||||
static inline QskGradientStop qskCreateStopAtPosition(
|
||||
const QskGradientStop& s1, const QskGradientStop& s2, qreal pos )
|
||||
{
|
||||
return { pos, qskColorAtPosition( s1, s2, pos ) };
|
||||
}
|
||||
|
||||
bool qskIsVisible( const QskGradientStops& stops ) noexcept
|
||||
{
|
||||
for ( const auto& stop : stops )
|
||||
|
@ -306,6 +312,84 @@ QColor qskInterpolatedColorAt( const QskGradientStops& stops, qreal pos ) noexce
|
|||
return stops.last().color();
|
||||
}
|
||||
|
||||
QskGradientStops qskReplacedGradientStops( const QskGradientStops& gradientStops,
|
||||
const QskGradientStop& stop1, const QskGradientStop& stop2 )
|
||||
{
|
||||
if ( stop1.position() >= stop2.position() )
|
||||
return gradientStops;
|
||||
|
||||
const auto s1 = QskGradientStop( qskBoundedStopPos( stop1.position() ), stop1.color() );
|
||||
const auto s2 = QskGradientStop( qskBoundedStopPos( stop2.position() ), stop2.color() );
|
||||
|
||||
QskGradientStops stops;
|
||||
|
||||
if ( s1.position() == 0.0 && s2.position() == 1.0 )
|
||||
{
|
||||
stops = { s1, s2 };
|
||||
}
|
||||
else if ( qskIsMonochrome( gradientStops ) )
|
||||
{
|
||||
stops.reserve( 4 );
|
||||
|
||||
const auto c = gradientStops.isEmpty()
|
||||
? QColor::fromRgba( 0 ) : gradientStops.first().color();
|
||||
|
||||
if ( s1.position() > 0.0 )
|
||||
stops += { s1.position(), c };
|
||||
|
||||
stops += s1;
|
||||
stops += s2;
|
||||
|
||||
if ( s2.position() < 1.0 )
|
||||
stops += { s2.position(), c };
|
||||
}
|
||||
else
|
||||
{
|
||||
// not the most efficient implementation - maybe later TODO ...
|
||||
const auto stops0 = qskNormalizedStops( gradientStops );
|
||||
|
||||
int i = 0;
|
||||
|
||||
if ( s1.position() > 0.0 )
|
||||
{
|
||||
while ( s1.position() > stops0[i].position() )
|
||||
stops += stops0[i++];
|
||||
|
||||
if ( s1.position() == stops0[i].position() )
|
||||
stops += stops0[i++];
|
||||
else
|
||||
stops += qskCreateStopAtPosition( stops0[i - 1], stops0[i], s1.position() );
|
||||
}
|
||||
|
||||
stops += s1;
|
||||
|
||||
while ( s2.position() > stops0[i].position() )
|
||||
i++;
|
||||
|
||||
stops += s2;
|
||||
|
||||
if ( s2.position() < 1.0 )
|
||||
{
|
||||
while ( stops0[i + 1].position() == s2.position() )
|
||||
i++;
|
||||
|
||||
if ( s2.position() != stops0[i].position() )
|
||||
stops += qskCreateStopAtPosition( stops0[i - 1], stops0[i], s2.position() );
|
||||
|
||||
while( i < stops0.count() )
|
||||
stops += stops0[i++];
|
||||
}
|
||||
}
|
||||
|
||||
return stops;
|
||||
}
|
||||
|
||||
QskGradientStops qskClippedGradientStops(
|
||||
const QskGradientStops& stops, qreal from, qreal to )
|
||||
{
|
||||
return qskReplacedGradientStops( stops, { from, 0 }, { to, 0 } );
|
||||
}
|
||||
|
||||
QskGradientStops qskExtractedGradientStops(
|
||||
const QskGradientStops& stops, qreal from, qreal to )
|
||||
{
|
||||
|
|
|
@ -150,6 +150,12 @@ QSK_EXPORT QskGradientStops qskExtractedGradientStops(
|
|||
// reverting the color stops
|
||||
QSK_EXPORT QskGradientStops qskRevertedGradientStops( const QskGradientStops& );
|
||||
|
||||
QSK_EXPORT QskGradientStops qskReplacedGradientStops(
|
||||
const QskGradientStops&, const QskGradientStop&, const QskGradientStop& );
|
||||
|
||||
QSK_EXPORT QskGradientStops qskClippedGradientStops(
|
||||
const QskGradientStops&, qreal from, qreal to );
|
||||
|
||||
/*
|
||||
creating equidistant color stops from a list of colors.
|
||||
when discrete is true the result will contain 2 stops at each position
|
||||
|
|
Loading…
Reference in New Issue