[composer] Make some set symbol methods clone symbol, nicer API

for PyQGIS (fix #13304)

python/core/composer/qgscomposershape.sip

@@ -47,7 +47,7 @@ class QgsComposerShape: QgsComposerItem
     /** Sets the QgsFillSymbolV2 used to draw the shape. Must also call setUseSymbolV2( true ) to
      * enable drawing with a symbol.
      * Note: added in version 2.1*/
-    void setShapeStyleSymbol( QgsFillSymbolV2* symbol /Transfer/ );
+    void setShapeStyleSymbol( QgsFillSymbolV2* symbol );
     /** Returns the QgsFillSymbolV2 used to draw the shape.
      * Note: added in version 2.1*/
     QgsFillSymbolV2* shapeStyleSymbol();

python/core/composer/qgscomposition.sip

@@ -115,7 +115,7 @@ class QgsComposition : QGraphicsScene
     bool shouldExportPage( const int page ) const;
 
     /** Note: added in version 2.1*/
-    void setPageStyleSymbol( QgsFillSymbolV2* symbol /Transfer/ );
+    void setPageStyleSymbol( QgsFillSymbolV2* symbol );
     /** Note: added in version 2.1*/
     QgsFillSymbolV2* pageStyleSymbol();
 

src/app/composer/qgscomposershapewidget.cpp

@@ -117,10 +117,7 @@ void QgsComposerShapeWidget::on_mShapeStyleButton_clicked()
     updateShapeStyle();
     mComposerShape->endCommand();
   }
-  else
+  delete newSymbol;
-  {
-    delete newSymbol;
-  }
 }
 
 void QgsComposerShapeWidget::updateShapeStyle()

src/app/composer/qgscompositionwidget.cpp

@@ -563,10 +563,7 @@ void QgsCompositionWidget::on_mPageStyleButton_clicked()
     mComposition->setPageStyleSymbol( newSymbol );
     updatePageStyle();
   }
-  else
+  delete newSymbol;
-  {
-    delete newSymbol;
-  }
 }
 
 void QgsCompositionWidget::updatePageStyle()

src/core/composer/qgscomposershape.cpp

@@ -74,7 +74,7 @@ void QgsComposerShape::setUseSymbolV2( bool useSymbolV2 )
 void QgsComposerShape::setShapeStyleSymbol( QgsFillSymbolV2* symbol )
 {
   delete mShapeStyleSymbol;
-  mShapeStyleSymbol = symbol;
+  mShapeStyleSymbol = static_cast<QgsFillSymbolV2*>( symbol->clone() );
   refreshSymbol();
 }
 

src/core/composer/qgscomposition.cpp

@@ -492,7 +492,7 @@ bool QgsComposition::shouldExportPage( const int page ) const
 void QgsComposition::setPageStyleSymbol( QgsFillSymbolV2* symbol )
 {
   delete mPageStyleSymbol;
-  mPageStyleSymbol = symbol;
+  mPageStyleSymbol = static_cast<QgsFillSymbolV2*>( symbol->clone() );
   QgsProject::instance()->dirty( true );
 }
 

tests/src/core/testqgscomposerpaper.cpp

@@ -36,10 +36,6 @@ class TestQgsComposerPaper : public QObject
   public:
     TestQgsComposerPaper()
         : mComposition( 0 )
-        , mSimpleFill( 0 )
-        , mMarkerLine( 0 )
-        , mFillSymbol( 0 )
-        , mMarkerLineSymbol( 0 )
         , mMapSettings( 0 )
     {}
 
@@ -56,10 +52,6 @@ class TestQgsComposerPaper : public QObject
   private:
     QgsComposition* mComposition;
     QString mReport;
-    QgsSimpleFillSymbolLayerV2* mSimpleFill;
-    QgsMarkerLineSymbolLayerV2* mMarkerLine;
-    QgsFillSymbolV2* mFillSymbol;
-    QgsFillSymbolV2* mMarkerLineSymbol;
     QgsMapSettings *mMapSettings;
     // QgsSingleSymbolRendererV2* mSymbolRenderer;
 
@@ -75,16 +67,6 @@ void TestQgsComposerPaper::initTestCase()
   mComposition = new QgsComposition( *mMapSettings );
   mComposition->setPaperSize( 297, 210 ); //A4 landscape
 
-  //setup simple fill
-  mSimpleFill = new QgsSimpleFillSymbolLayerV2();
-  mFillSymbol = new QgsFillSymbolV2();
-  mFillSymbol->changeSymbolLayer( 0, mSimpleFill );
-
-  //setup marker line fill
-  mMarkerLine = new QgsMarkerLineSymbolLayerV2();
-  mMarkerLineSymbol = new QgsFillSymbolV2();
-  mMarkerLineSymbol->changeSymbolLayer( 0, mMarkerLine );
-
   mReport = "<h1>Composer Paper Tests</h1>\n";
 }
 
@@ -123,9 +105,14 @@ void TestQgsComposerPaper::defaultPaper()
 
 void TestQgsComposerPaper::transparentPaper()
 {
-  mSimpleFill->setColor( Qt::transparent );
+  QgsSimpleFillSymbolLayerV2* simpleFill = new QgsSimpleFillSymbolLayerV2();
-  mSimpleFill->setBorderColor( Qt::transparent );
+  QgsFillSymbolV2* fillSymbol = new QgsFillSymbolV2();
-  mComposition->setPageStyleSymbol( mFillSymbol );
+  fillSymbol->changeSymbolLayer( 0, simpleFill );
+  simpleFill->setColor( Qt::transparent );
+  simpleFill->setBorderColor( Qt::transparent );
+  mComposition->setPageStyleSymbol( fillSymbol );
+  delete fillSymbol;
+
   QgsCompositionChecker checker( "composerpaper_transparent", mComposition );
   checker.setControlPathPrefix( "composer_paper" );
   QVERIFY( checker.testComposition( mReport ) );
@@ -133,9 +120,15 @@ void TestQgsComposerPaper::transparentPaper()
 
 void TestQgsComposerPaper::borderedPaper()
 {
-  mSimpleFill->setColor( Qt::white );
+  QgsSimpleFillSymbolLayerV2* simpleFill = new QgsSimpleFillSymbolLayerV2();
-  mSimpleFill->setBorderColor( Qt::black );
+  QgsFillSymbolV2* fillSymbol = new QgsFillSymbolV2();
-  mSimpleFill->setBorderWidth( 6 );
+  fillSymbol->changeSymbolLayer( 0, simpleFill );
+  simpleFill->setColor( Qt::white );
+  simpleFill->setBorderColor( Qt::black );
+  simpleFill->setBorderWidth( 6 );
+  mComposition->setPageStyleSymbol( fillSymbol );
+  delete fillSymbol;
+
   QgsCompositionChecker checker( "composerpaper_bordered", mComposition );
   checker.setControlPathPrefix( "composer_paper" );
   QVERIFY( checker.testComposition( mReport ) );
@@ -143,7 +136,12 @@ void TestQgsComposerPaper::borderedPaper()
 
 void TestQgsComposerPaper::markerLinePaper()
 {
-  mComposition->setPageStyleSymbol( mMarkerLineSymbol );
+  QgsMarkerLineSymbolLayerV2* markerLine = new QgsMarkerLineSymbolLayerV2();
+  QgsFillSymbolV2* markerLineSymbol = new QgsFillSymbolV2();
+  markerLineSymbol->changeSymbolLayer( 0, markerLine );
+  mComposition->setPageStyleSymbol( markerLineSymbol );
+  delete markerLineSymbol;
+
   QgsCompositionChecker checker( "composerpaper_markerborder", mComposition );
   checker.setControlPathPrefix( "composer_paper" );
   QVERIFY( checker.testComposition( mReport, 0, 0 ) );

tests/src/core/testqgscomposershapes.cpp

@@ -37,8 +37,6 @@ class TestQgsComposerShapes : public QObject
         : mComposition( 0 )
         , mComposerShape( 0 )
         , mMapSettings( 0 )
-        , mSimpleFill( 0 )
-        , mFillSymbol( 0 )
     {}
 
   private slots:
@@ -56,8 +54,6 @@ class TestQgsComposerShapes : public QObject
     QgsComposition* mComposition;
     QgsComposerShape* mComposerShape;
     QgsMapSettings *mMapSettings;
-    QgsSimpleFillSymbolLayerV2* mSimpleFill;
-    QgsFillSymbolV2* mFillSymbol;
     QString mReport;
 };
 
@@ -75,11 +71,6 @@ void TestQgsComposerShapes::initTestCase()
   mComposerShape->setBackgroundColor( QColor::fromRgb( 255, 150, 0 ) );
   mComposition->addComposerShape( mComposerShape );
 
-  //setup simple fill
-  mSimpleFill = new QgsSimpleFillSymbolLayerV2();
-  mFillSymbol = new QgsFillSymbolV2();
-  mFillSymbol->changeSymbolLayer( 0, mSimpleFill );
-
   mReport = "<h1>Composer Shape Tests</h1>\n";
 }
 
@@ -151,12 +142,17 @@ void TestQgsComposerShapes::symbolV2()
 {
   mComposerShape->setShapeType( QgsComposerShape::Rectangle );
 
-  mSimpleFill->setColor( Qt::green );
+  //setup simple fill
-  mSimpleFill->setBorderColor( Qt::yellow );
+  QgsSimpleFillSymbolLayerV2* simpleFill = new QgsSimpleFillSymbolLayerV2();
-  mSimpleFill->setBorderWidth( 6 );
+  QgsFillSymbolV2* fillSymbol = new QgsFillSymbolV2();
+  fillSymbol->changeSymbolLayer( 0, simpleFill );
+  simpleFill->setColor( Qt::green );
+  simpleFill->setBorderColor( Qt::yellow );
+  simpleFill->setBorderWidth( 6 );
 
-  mComposerShape->setShapeStyleSymbol( mFillSymbol );
+  mComposerShape->setShapeStyleSymbol( fillSymbol );
   mComposerShape->setUseSymbolV2( true );
+  delete fillSymbol;
 
   QgsCompositionChecker checker( "composershapes_symbolv2", mComposition );
   checker.setControlPathPrefix( "composer_shapes" );