Fix calculation of layout bounds considers page shadow

Author: nyalldawson

src/core/layout/qgslayout.cpp

@@ -138,10 +138,20 @@ QRectF QgsLayout::layoutBounds( bool ignorePages, double margin ) const
     if ( !isPage || !ignorePages )
     {
       //expand bounds with current item's bounds
+      QRectF itemBounds;
+      if ( isPage )
+      {
+        // for pages we only consider the item's rect - not the bounding rect
+        // as the bounding rect contains extra padding
+        itemBounds = layoutItem->mapToScene( layoutItem->rect() ).boundingRect();
+      }
+      else
+        itemBounds = item->sceneBoundingRect();
+
       if ( bounds.isValid() )
-        bounds = bounds.united( item->sceneBoundingRect() );
+        bounds = bounds.united( itemBounds );
       else
-        bounds = item->sceneBoundingRect();
+        bounds = itemBounds;
     }
   }
 

tests/src/core/testqgslayout.cpp

@@ -292,10 +292,10 @@ void TestQgsLayout::bounds()
   QGSCOMPARENEAR( compositionBoundsNoPage.top(), 49.79, 0.01 );
 #endif
 
-  QGSCOMPARENEAR( layoutBounds.height(), 211.000000, 0.01 );
-  QGSCOMPARENEAR( layoutBounds.width(), 298.000000, 0.01 );
-  QGSCOMPARENEAR( layoutBounds.left(), -0.500000, 0.01 );
-  QGSCOMPARENEAR( layoutBounds.top(), -0.500000, 0.01 );
+  QGSCOMPARENEAR( layoutBounds.height(), 210.000000, 0.01 );
+  QGSCOMPARENEAR( layoutBounds.width(), 297.000000, 0.01 );
+  QGSCOMPARENEAR( layoutBounds.left(), 0.00000, 0.01 );
+  QGSCOMPARENEAR( layoutBounds.top(), 0.00000, 0.01 );
 
   QRectF compositionBoundsNoPage = l.layoutBounds( true );
   QGSCOMPARENEAR( compositionBoundsNoPage.height(), 175.704581, 0.01 );