Added some comments explaining how alpha works

qgis · Feb 24, 2012 · c1b268c · c1b268c
1 parent 371d7fe
commit c1b268c
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diff --git a/python/core/symbology-ng-core.sip b/python/core/symbology-ng-core.sip
@@ -624,7 +624,9 @@ class QgsSymbolV2RenderContext
     QgsSymbolV2::OutputUnit outputUnit() const;
     void setOutputUnit( QgsSymbolV2::OutputUnit u );
 
+    //! Get alpha transparency 1 for opaque, 0 for invisible
     qreal alpha() const;
+    //! Set alpha transparency 1 for opaque, 0 for invisible
     void setAlpha( qreal alpha );
 
     bool selected() const;

diff --git a/src/core/symbology-ng/qgssymbolv2.h b/src/core/symbology-ng/qgssymbolv2.h
@@ -92,7 +92,9 @@ class CORE_EXPORT QgsSymbolV2
     OutputUnit outputUnit() const { return mOutputUnit; }
     void setOutputUnit( OutputUnit u ) { mOutputUnit = u; }
 
+    //! Get alpha transparency 1 for opaque, 0 for invisible
     qreal alpha() const { return mAlpha; }
+    //! Set alpha transparency 1 for opaque, 0 for invisible
     void setAlpha( qreal alpha ) { mAlpha = alpha; }
 
     //! @note added in 1.5
@@ -137,7 +139,9 @@ class CORE_EXPORT QgsSymbolV2RenderContext
     QgsSymbolV2::OutputUnit outputUnit() const { return mOutputUnit; }
     void setOutputUnit( QgsSymbolV2::OutputUnit u ) { mOutputUnit = u; }
 
+    //! Get alpha transparency 1 for opaque, 0 for invisible
     qreal alpha() const { return mAlpha; }
+    //! Set alpha transparency 1 for opaque, 0 for invisible
     void setAlpha( qreal alpha ) { mAlpha = alpha; }
 
     bool selected() const { return mSelected; }