Add aplha to colour ramp

Author: NathanW2

src/gui/symbology-ng/qgsvectorgradientcolorrampv2dialog.cpp

@@ -35,6 +35,8 @@ QgsVectorGradientColorRampV2Dialog::QgsVectorGradientColorRampV2Dialog( QgsVecto
   setWindowModality( Qt::WindowModal );
 #endif
 
+  btnColor1->setColorDialogOptions( QColorDialog::ShowAlphaChannel );
+  btnColor2->setColorDialogOptions( QColorDialog::ShowAlphaChannel );
   connect( btnColor1, SIGNAL( colorChanged( const QColor& ) ), this, SLOT( setColor1( const QColor& ) ) );
   connect( btnColor2, SIGNAL( colorChanged( const QColor& ) ), this, SLOT( setColor2( const QColor& ) ) );
 
@@ -271,7 +273,7 @@ void QgsVectorGradientColorRampV2Dialog::stopDoubleClicked( QTreeWidgetItem* ite
     }
     else
     {
-      color = QColorDialog::getColor( item->data( 0, StopColorRole ).value<QColor>(), this );
+        color = QColorDialog::getColor( item->data( 0, StopColorRole ).value<QColor>(), this, tr("Edit Stop Color"), QColorDialog::ShowAlphaChannel );
     }
     if ( !color.isValid() )
       return;
@@ -318,7 +320,7 @@ void QgsVectorGradientColorRampV2Dialog::addStop()
 // but not needed at this time because of the other Qt bug
 // FIXME need to also check max QT_VERSION when Qt bug(s) fixed
 #ifndef Q_WS_MAC
-  QColor color = QColorDialog::getColor( QColor(), this );
+  QColor color = QColorDialog::getColor( QColor(), this, tr("Add Color Stop"), QColorDialog::ShowAlphaChannel );
 
   if ( !color.isValid() )
     return;
@@ -349,7 +351,7 @@ void QgsVectorGradientColorRampV2Dialog::addStop()
   lst << "." << QString(( val < 10 ) ? '0' + QString::number( val ) : QString::number( val ) );
 
 #ifdef Q_WS_MAC
-  QColor color = QColorDialog::getColor( QColor(), this );
+  QColor color = QColorDialog::getColor( QColor(), this, tr("Add Color Stop"), QColorDialog::ShowAlphaChannel );
 
   if ( !color.isValid() )
     return;