From 0fb4b25bbaef94534b49475dbc24bcef16580084 Mon Sep 17 00:00:00 2001
From: Uwe Rathmann <Uwe.Rathmann@tigertal.de>
Date: Sun, 13 Nov 2022 10:09:18 +0100
Subject: [PATCH] making QskGradient types acessible for QML ( mot 100% happy
 with using lists )

---
 examples/layouts/layouts.qml |  2 ++
 src/common/QskGradient.cpp   | 62 ++++++++++++++++++++++++++++++++++++
 src/common/QskGradient.h     | 18 ++++++++++-
 3 files changed, 81 insertions(+), 1 deletion(-)

diff --git a/examples/layouts/layouts.qml b/examples/layouts/layouts.qml
index a06c66ef..51950179 100644
--- a/examples/layouts/layouts.qml
+++ b/examples/layouts/layouts.qml
@@ -11,6 +11,8 @@ GridBox
 
     background
     {
+        linear: [ 0.0, 0.0, 1.0, 0.0 ]
+
         stops: [
             { position: 0.0, color: "Red" },
             { position: 1.0, color: "Yellow" },
diff --git a/src/common/QskGradient.cpp b/src/common/QskGradient.cpp
index d38a619c..9f47e9a0 100644
--- a/src/common/QskGradient.cpp
+++ b/src/common/QskGradient.cpp
@@ -386,6 +386,68 @@ QskHashValue QskGradient::hash( QskHashValue seed ) const
     return hash;
 }
 
+void QskGradient::setLinear( const QVector< qreal >& params )
+{
+    Q_ASSERT( params.size() == 4 );
+
+    m_type = Linear;
+
+    m_values[0] = params[0];
+    m_values[1] = params[1];
+    m_values[2] = params[2];
+    m_values[3] = params[3];
+}
+
+QVector< qreal > QskGradient::linear() const
+{
+    Q_ASSERT( m_type == Linear );
+    return { m_values[0], m_values[1], m_values[2], m_values[3] };
+}
+    
+void QskGradient::setRadial( const QVector< qreal >& params )
+{   
+    Q_ASSERT( params.size() == 3 );
+
+    m_type = Radial;
+
+    m_values[0] = params[0];
+    m_values[1] = params[1];
+    m_values[2] = params[2];
+    m_values[3] = 0.0;
+}
+
+QVector< qreal > QskGradient::radial() const
+{
+    Q_ASSERT( m_type == Radial );
+    return { m_values[0], m_values[1], m_values[2] };
+}
+    
+void QskGradient::setConic( const QVector< qreal >& params )
+{   
+    Q_ASSERT( params.size() >= 2 && params.size() <= 4 );
+
+    m_type = Linear;
+
+    m_values[0] = params[0];
+    m_values[1] = params[1];
+
+    if ( params.size() > 2 )
+        m_values[2] = params[2];
+    else
+        m_values[2] = 0.0;
+
+    if ( params.size() == 4 )
+        m_values[3] = params[3];
+    else
+        m_values[2] = 360.0;
+}
+
+QVector< qreal > QskGradient::conic() const
+{
+    Q_ASSERT( m_type == Conic );
+    return { m_values[0], m_values[1], m_values[2], m_values[3] };
+}
+
 #include "QskLinearGradient.h"
 #include "QskRadialGradient.h"
 #include "QskConicGradient.h"
diff --git a/src/common/QskGradient.h b/src/common/QskGradient.h
index 3d8f0522..110aeb93 100644
--- a/src/common/QskGradient.h
+++ b/src/common/QskGradient.h
@@ -26,8 +26,13 @@ class QSK_EXPORT QskGradient
 {
     Q_GADGET
 
+    Q_PROPERTY( Type type READ type )
+
+    Q_PROPERTY( QVector< qreal > linear READ linear WRITE setLinear )
+    Q_PROPERTY( QVector< qreal > conic READ linear WRITE setConic )
+    Q_PROPERTY( QVector< qreal > radial READ radial WRITE setRadial )
+
     Q_PROPERTY( QVector< QskGradientStop > stops READ stops WRITE setStops )
-    // Q_PROPERTY( QQmlListProperty<QQuickGradientStop> stops READ stops )
 
     Q_PROPERTY( bool valid READ isValid )
     Q_PROPERTY( bool visible READ isVisible )
@@ -126,6 +131,17 @@ class QSK_EXPORT QskGradient
 
     void updateStatusBits() const;
 
+  private:
+    // for QML
+    QVector< qreal > linear() const;
+    void setLinear( const QVector< qreal >& );
+
+    QVector< qreal > radial() const;
+    void setRadial( const QVector< qreal >& );
+
+    QVector< qreal > conic() const;
+    void setConic( const QVector< qreal >& );
+
   private:
     QVector< QskGradientStop > m_stops;