QskRgbPalette::colorStops added

examples/boxes/Box.cpp

@@ -8,6 +8,7 @@
 #include <QskBoxBorderColors.h>
 #include <QskBoxBorderMetrics.h>
 #include <QskBoxShapeMetrics.h>
+#include <QskRgbPalette.h>
 
 Box::Box( QQuickItem* parentItem )
     : QskBox( parentItem )
@@ -180,23 +181,5 @@ void Box::setGradient(
     const QskGradient::Orientation orientation, QskRgbPalette::Theme theme )
 {
     const auto pal = QskRgbPalette::palette( theme );
-
-    QVector< QskGradientStop > stops;
-
-    stops += QskGradientStop( 0.0, pal.color( static_cast< QskRgbPalette::Weight >( 0 ) ) );
-
-    const int count = QskRgbPalette::NumWeights - 1;
-    for ( int i = 1; i < count; i++ )
-    {
-        const qreal pos = qreal( i ) / count;
-        const auto weight = static_cast< QskRgbPalette::Weight >( i );
-
-        stops += QskGradientStop( pos, stops.last().color() );
-        stops += QskGradientStop( pos, pal.color( weight ) );
-    }
-
-    stops += QskGradientStop( 1.0,
-        pal.color( static_cast< QskRgbPalette::Weight >( QskRgbPalette::NumWeights - 1 ) ) );
-
-    setGradient( QskGradient( orientation, stops ) );
+    setGradient( QskGradient( orientation, pal.colorStops( true ) ) );
 }

src/common/QskRgbPalette.cpp

@@ -5,6 +5,7 @@
 
 #include "QskRgbPalette.h"
 #include "QskRgbValue.h"
+#include "QskGradient.h"
 
 #define RGB( color, weight ) color ## weight
 
@@ -56,3 +57,38 @@ QskRgbPalette QskRgbPalette::palette( Theme theme )
 {
     return Palette( static_cast< int >( theme ) );
 }
+
+QVector< QskGradientStop > QskRgbPalette::colorStops( bool discrete ) const
+{
+    QVector< QskGradientStop > stops;
+
+    if ( discrete )
+        stops.reserve( 2 * QskRgbPalette::NumWeights - 2 );
+    else
+        stops.reserve( QskRgbPalette::NumWeights );
+
+    stops += QskGradientStop( 0.0, m_rgb[0] );
+
+    if ( discrete )
+    {
+        constexpr auto step = 1.0 / NumWeights;
+
+        for ( int i = 1; i < NumWeights; i++ )
+        {
+            const qreal pos = i * step;
+            stops += QskGradientStop( pos, m_rgb[i-1] );
+            stops += QskGradientStop( pos, m_rgb[i] );
+        }
+    }
+    else
+    {
+        constexpr auto step = 1.0 / ( NumWeights - 1 );
+
+        for ( int i = 1; i < NumWeights - 1; i++ )
+            stops += QskGradientStop( i * step, m_rgb[i] );
+    }
+
+    stops += QskGradientStop( 1.0, m_rgb[NumWeights - 1] );
+
+    return stops;
+}

src/common/QskRgbPalette.h

@@ -10,6 +10,9 @@
 #include <qmetaobject.h>
 #include <qcolor.h>
 
+class QskGradientStop;
+template< typename T > class QVector;
+
 class QSK_EXPORT QskRgbPalette
 {
     Q_GADGET
@@ -71,6 +74,8 @@ class QSK_EXPORT QskRgbPalette
         return QColor::fromRgba( rgb( weight ) );
     }
 
+    QVector< QskGradientStop > colorStops( bool discrete = false ) const;
+
     static QskRgbPalette palette( Theme );
 
   protected: