loplugin:useuniqueptr in ScPreview

Change-Id: I081066d34ed6b134b5354f8df7f9801356ef181c
Reviewed-on: https://gerrit.libreoffice.org/56907
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sc/source/ui/inc/preview.hxx

@@ -51,8 +51,8 @@ private:
     long            nTotalPages;
     Size            aPageSize;          // for GetOptimalZoom
     ScPrintState    aState;
-    ScPreviewLocationData* pLocationData;   // stores table layout for accessibility API
-    FmFormView*     pDrawView;
+    std::unique_ptr<ScPreviewLocationData> pLocationData;   // stores table layout for accessibility API
+    std::unique_ptr<FmFormView> pDrawView;
 
                                         // internal:
     ScDocShell*     pDocShell;
@@ -156,7 +156,7 @@ public:
     DECL_STATIC_LINK( ScPreview, InvalidateHdl, void*, void );
     static void StaticInvalidate();
 
-    FmFormView* GetDrawView() { return pDrawView; }
+    FmFormView* GetDrawView() { return pDrawView.get(); }
 
     SC_DLLPUBLIC void SetSelectedTabs(const ScMarkData& rMark);
     const ScMarkData::MarkedTabsType& GetSelectedTabs() const { return maSelectedTabs; }

sc/source/ui/view/preview.cxx

@@ -144,8 +144,8 @@ ScPreview::~ScPreview()
 
 void ScPreview::dispose()
 {
-    delete pDrawView;
-    delete pLocationData;
+    pDrawView.reset();
+    pLocationData.reset();
     vcl::Window::dispose();
 }
 
@@ -160,15 +160,12 @@ void ScPreview::UpdateDrawView()        // nTab must be right
         if ( pDrawView && ( !pDrawView->GetSdrPageView() || pDrawView->GetSdrPageView()->GetPage() != pPage ) )
         {
             // convert the displayed Page of drawView (see below) does not work?!?
-            delete pDrawView;
-            pDrawView = nullptr;
+            pDrawView.reset();
         }
 
         if ( !pDrawView )                                   // New Drawing?
         {
-            pDrawView = new FmFormView(
-                *pModel,
-                this);
+            pDrawView.reset( new FmFormView( *pModel, this) );
 
             // The DrawView takes over the Design-Mode from the Model
             // (Settings "In opening Draftmode"), therefore to restore here
@@ -179,8 +176,7 @@ void ScPreview::UpdateDrawView()        // nTab must be right
     }
     else if ( pDrawView )
     {
-        delete pDrawView;           // for this Chart is not needed
-        pDrawView = nullptr;
+        pDrawView.reset();   // for this Chart is not needed
     }
 }
 
@@ -404,7 +400,7 @@ void ScPreview::DoPrint( ScPreviewLocationData* pFillLocation )
         pPrintFunc->SetClearFlag(true);
         pPrintFunc->SetUseStyleColor( pScMod->GetAccessOptions().GetIsForPagePreviews() );
 
-        pPrintFunc->SetDrawView( pDrawView );
+        pPrintFunc->SetDrawView( pDrawView.get() );
 
         // MultiSelection for the one Page must produce something inconvenient
         Range aPageRange( nPageNo+1, nPageNo+1 );
@@ -685,13 +681,13 @@ const ScPreviewLocationData& ScPreview::GetLocationData()
 {
     if ( !pLocationData )
     {
-        pLocationData = new ScPreviewLocationData( &pDocShell->GetDocument(), this );
+        pLocationData.reset( new ScPreviewLocationData( &pDocShell->GetDocument(), this ) );
         bLocationValid = false;
     }
     if ( !bLocationValid )
     {
         pLocationData->Clear();
-        DoPrint( pLocationData );
+        DoPrint( pLocationData.get() );
         bLocationValid = true;
     }
     return *pLocationData;