ImplWallpaper to use std::unique_ptr

Also remove ImplWallpaper::operator==, that does not
make sense since members are unique

Change-Id: I69d32d91ba33691eb1f86e70ce3c53fa2761e34b
Reviewed-on: https://gerrit.libreoffice.org/31666
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

4 files changed, 49 insertions, 92 deletions

diff --git a/include/vcl/wall.hxx b/include/vcl/wall.hxx
index ac1d3d27c224..bd9fa295a693 100644
--- a/include/vcl/wall.hxx
+++ b/include/vcl/wall.hxx
@@ -93,6 +93,7 @@ public:
 
     Wallpaper&      operator=( const Wallpaper& rWallpaper );
     Wallpaper&      operator=( Wallpaper&& rWallpaper );
+
     bool            operator==( const Wallpaper& rWallpaper ) const;
     bool            operator!=( const Wallpaper& rWallpaper ) const
                         { return !(Wallpaper::operator==( rWallpaper )); }
diff --git a/svtools/source/contnr/ivctrl.cxx b/svtools/source/contnr/ivctrl.cxx
index 41f2296978e6..198184505a1e 100644
--- a/svtools/source/contnr/ivctrl.cxx
+++ b/svtools/source/contnr/ivctrl.cxx
@@ -338,9 +338,12 @@ void SvtIconChoiceCtrl::SetBackground( const Wallpaper& rPaper )
     if( rPaper != GetBackground() )
     {
         const StyleSettings& rStyleSettings = GetSettings().GetStyleSettings();
-        Wallpaper aEmpty;
-        if( rPaper == aEmpty )
+        // if it is the default (empty) wallpaper
+        if( rPaper.GetStyle() == WallpaperStyle::NONE && rPaper.GetColor() == COL_TRANSPARENT &&
+            !rPaper.IsBitmap() && !rPaper.IsGradient() && !rPaper.IsRect())
+        {
             Control::SetBackground( rStyleSettings.GetFieldColor() );
+        }
         else
         {
             Wallpaper aBackground( rPaper );
diff --git a/vcl/inc/wall2.hxx b/vcl/inc/wall2.hxx
index 59f2ebb2bc66..52393dd937a4 100644
--- a/vcl/inc/wall2.hxx
+++ b/vcl/inc/wall2.hxx
@@ -25,19 +25,19 @@ class ImplWallpaper
     friend class Wallpaper;
 
 private:
-    Color           maColor;
-    BitmapEx*       mpBitmap;
-    Gradient*       mpGradient;
-    Rectangle*      mpRect;
+    Color                       maColor;
+    std::unique_ptr<BitmapEx>   mpBitmap;
+    std::unique_ptr<Gradient>   mpGradient;
+    std::unique_ptr<Rectangle>  mpRect;
     WallpaperStyle  meStyle;
-    BitmapEx*       mpCache;
+    std::unique_ptr<BitmapEx>   mpCache;
 
 public:
     ImplWallpaper();
     ImplWallpaper( const ImplWallpaper& rImplWallpaper );
     ~ImplWallpaper();
 
-    bool operator==( const ImplWallpaper& rImplWallpaper ) const;
+    bool operator==( const ImplWallpaper& rImplWallpaper ) const = delete;
 
     friend SvStream& ReadImplWallpaper( SvStream& rIStm, ImplWallpaper& rImplWallpaper );
     friend SvStream& WriteImplWallpaper( SvStream& rOStm, const ImplWallpaper& rImplWallpaper );
diff --git a/vcl/source/gdi/wall.cxx b/vcl/source/gdi/wall.cxx
index 30cba8948cd9..b3f6fa2fa0b0 100644
--- a/vcl/source/gdi/wall.cxx
+++ b/vcl/source/gdi/wall.cxx
@@ -27,57 +27,32 @@
 #include <wall2.hxx>
 #include <vcl/dibtools.hxx>
 #include <vcl/settings.hxx>
+#include <o3tl/make_unique.hxx>
 
 ImplWallpaper::ImplWallpaper() :
-    maColor( COL_TRANSPARENT )
+    maColor( COL_TRANSPARENT ), meStyle( WallpaperStyle::NONE )
 {
-    mpBitmap        = nullptr;
-    mpCache         = nullptr;
-    mpGradient      = nullptr;
-    mpRect          = nullptr;
-    meStyle         = WallpaperStyle::NONE;
 }
 
 ImplWallpaper::ImplWallpaper( const ImplWallpaper& rImplWallpaper ) :
-    maColor( rImplWallpaper.maColor )
+    maColor( rImplWallpaper.maColor ), meStyle(rImplWallpaper.meStyle)
 {
-    meStyle = rImplWallpaper.meStyle;
-
     if ( rImplWallpaper.mpBitmap )
-        mpBitmap = new BitmapEx( *rImplWallpaper.mpBitmap );
-    else
-        mpBitmap = nullptr;
+        mpBitmap = o3tl::make_unique<BitmapEx>( *rImplWallpaper.mpBitmap );
+
     if( rImplWallpaper.mpCache )
-        mpCache = new BitmapEx( *rImplWallpaper.mpCache );
-    else
-        mpCache = nullptr;
+        mpCache = o3tl::make_unique<BitmapEx>( *rImplWallpaper.mpCache );
+
     if ( rImplWallpaper.mpGradient )
-        mpGradient = new Gradient( *rImplWallpaper.mpGradient );
-    else
-        mpGradient = nullptr;
+        mpGradient = o3tl::make_unique<Gradient>( *rImplWallpaper.mpGradient );
+
     if ( rImplWallpaper.mpRect )
-        mpRect = new Rectangle( *rImplWallpaper.mpRect );
-    else
-        mpRect = nullptr;
-}
+        mpRect = o3tl::make_unique<Rectangle>( *rImplWallpaper.mpRect );
 
-ImplWallpaper::~ImplWallpaper()
-{
-    delete mpBitmap;
-    delete mpCache;
-    delete mpGradient;
-    delete mpRect;
 }
 
-bool ImplWallpaper::operator==( const ImplWallpaper& rImplWallpaper ) const
+ImplWallpaper::~ImplWallpaper()
 {
-    if ( meStyle == rImplWallpaper.meStyle &&
-         maColor == rImplWallpaper.maColor &&
-         mpRect == rImplWallpaper.mpRect &&
-         mpBitmap == rImplWallpaper.mpBitmap &&
-         mpGradient == rImplWallpaper.mpGradient )
-        return true;
-    return false;
 }
 
 SvStream& ReadImplWallpaper( SvStream& rIStm, ImplWallpaper& rImplWallpaper )
@@ -85,14 +60,9 @@ SvStream& ReadImplWallpaper( SvStream& rIStm, ImplWallpaper& rImplWallpaper )
     VersionCompat   aCompat( rIStm, StreamMode::READ );
     sal_uInt16          nTmp16;
 
-    delete rImplWallpaper.mpRect;
-    rImplWallpaper.mpRect = nullptr;
-
-    delete rImplWallpaper.mpGradient;
-    rImplWallpaper.mpGradient = nullptr;
-
-    delete rImplWallpaper.mpBitmap;
-    rImplWallpaper.mpBitmap = nullptr;
+    rImplWallpaper.mpRect.reset();
+    rImplWallpaper.mpGradient.reset();
+    rImplWallpaper.mpBitmap.reset();
 
     // version 1
     ReadColor( rIStm, rImplWallpaper.maColor );
@@ -107,19 +77,19 @@ SvStream& ReadImplWallpaper( SvStream& rIStm, ImplWallpaper& rImplWallpaper )
 
         if( bRect )
         {
-            rImplWallpaper.mpRect = new Rectangle;
+            rImplWallpaper.mpRect = o3tl::make_unique<Rectangle>();
             ReadRectangle( rIStm, *rImplWallpaper.mpRect );
         }
 
         if( bGrad )
         {
-            rImplWallpaper.mpGradient = new Gradient;
+            rImplWallpaper.mpGradient = o3tl::make_unique<Gradient>();
             ReadGradient( rIStm, *rImplWallpaper.mpGradient );
         }
 
         if( bBmp )
         {
-            rImplWallpaper.mpBitmap = new BitmapEx;
+            rImplWallpaper.mpBitmap = o3tl::make_unique<BitmapEx>();
             ReadDIBBitmapEx(*rImplWallpaper.mpBitmap, rIStm);
         }
 
@@ -136,9 +106,9 @@ SvStream& ReadImplWallpaper( SvStream& rIStm, ImplWallpaper& rImplWallpaper )
 SvStream& WriteImplWallpaper( SvStream& rOStm, const ImplWallpaper& rImplWallpaper )
 {
     VersionCompat   aCompat( rOStm, StreamMode::WRITE, 3 );
-    bool            bRect = ( rImplWallpaper.mpRect != nullptr );
-    bool            bGrad = ( rImplWallpaper.mpGradient != nullptr );
-    bool            bBmp = ( rImplWallpaper.mpBitmap != nullptr );
+    bool            bRect = bool(rImplWallpaper.mpRect);
+    bool            bGrad = bool(rImplWallpaper.mpGradient);
+    bool            bBmp = bool(rImplWallpaper.mpBitmap);
     bool            bDummy = false;
 
     // version 1
@@ -191,13 +161,13 @@ Wallpaper::Wallpaper( const Color& rColor ) : mpImplWallpaper()
 
 Wallpaper::Wallpaper( const BitmapEx& rBmpEx ) : mpImplWallpaper()
 {
-    mpImplWallpaper->mpBitmap   = new BitmapEx( rBmpEx );
+    mpImplWallpaper->mpBitmap   = o3tl::make_unique<BitmapEx>( rBmpEx );
     mpImplWallpaper->meStyle    = WallpaperStyle::Tile;
 }
 
 Wallpaper::Wallpaper( const Gradient& rGradient ) : mpImplWallpaper()
 {
-    mpImplWallpaper->mpGradient = new Gradient( rGradient );
+    mpImplWallpaper->mpGradient = o3tl::make_unique<Gradient>( rGradient );
     mpImplWallpaper->meStyle    = WallpaperStyle::Tile;
 }
 
@@ -208,23 +178,21 @@ Wallpaper::~Wallpaper()
 void Wallpaper::ImplSetCachedBitmap( BitmapEx& rBmp ) const
 {
    if( !mpImplWallpaper->mpCache )
-      const_cast< ImplWallpaper* >(mpImplWallpaper.get())->mpCache = new BitmapEx( rBmp );
+      const_cast< ImplWallpaper* >(mpImplWallpaper.get())->mpCache = o3tl::make_unique<BitmapEx>( rBmp );
    else
       *const_cast< ImplWallpaper* >(mpImplWallpaper.get())->mpCache = rBmp;
 }
 
 const BitmapEx* Wallpaper::ImplGetCachedBitmap() const
 {
-    return mpImplWallpaper->mpCache;
+    return mpImplWallpaper->mpCache.get();
 }
 
 void Wallpaper::ImplReleaseCachedBitmap() const
 {
-    delete mpImplWallpaper->mpCache;
-    const_cast< ImplWallpaper* >(mpImplWallpaper.get())->mpCache = nullptr;
+    const_cast< ImplWallpaper* >(mpImplWallpaper.get())->mpCache.reset();
 }
 
-
 void Wallpaper::SetColor( const Color& rColor )
 {
     ImplReleaseCachedBitmap();
@@ -261,8 +229,7 @@ void Wallpaper::SetBitmap( const BitmapEx& rBitmap )
         if ( mpImplWallpaper->mpBitmap )
         {
             ImplReleaseCachedBitmap();
-            delete mpImplWallpaper->mpBitmap;
-            mpImplWallpaper->mpBitmap = nullptr;
+            mpImplWallpaper->mpBitmap.reset();
         }
     }
     else
@@ -271,7 +238,7 @@ void Wallpaper::SetBitmap( const BitmapEx& rBitmap )
         if ( mpImplWallpaper->mpBitmap )
             *(mpImplWallpaper->mpBitmap) = rBitmap;
         else
-            mpImplWallpaper->mpBitmap = new BitmapEx( rBitmap );
+            mpImplWallpaper->mpBitmap = o3tl::make_unique<BitmapEx>( rBitmap );
     }
 
     if( WallpaperStyle::NONE == mpImplWallpaper->meStyle || WallpaperStyle::ApplicationGradient == mpImplWallpaper->meStyle)
@@ -283,15 +250,12 @@ BitmapEx Wallpaper::GetBitmap() const
     if ( mpImplWallpaper->mpBitmap )
         return *(mpImplWallpaper->mpBitmap);
     else
-    {
-        BitmapEx aBmp;
-        return aBmp;
-    }
+        return BitmapEx();
 }
 
 bool Wallpaper::IsBitmap() const
 {
-    return (mpImplWallpaper->mpBitmap != nullptr);
+    return bool(mpImplWallpaper->mpBitmap);
 }
 
 void Wallpaper::SetGradient( const Gradient& rGradient )
@@ -301,7 +265,7 @@ void Wallpaper::SetGradient( const Gradient& rGradient )
     if ( mpImplWallpaper->mpGradient )
         *(mpImplWallpaper->mpGradient) = rGradient;
     else
-        mpImplWallpaper->mpGradient = new Gradient( rGradient );
+        mpImplWallpaper->mpGradient = o3tl::make_unique<Gradient>( rGradient );
 
     if( WallpaperStyle::NONE == mpImplWallpaper->meStyle || WallpaperStyle::ApplicationGradient == mpImplWallpaper->meStyle )
         mpImplWallpaper->meStyle = WallpaperStyle::Tile;
@@ -314,15 +278,12 @@ Gradient Wallpaper::GetGradient() const
     else if ( mpImplWallpaper->mpGradient )
         return *(mpImplWallpaper->mpGradient);
     else
-    {
-        Gradient aGradient;
-        return aGradient;
-    }
+        return Gradient();
 }
 
 bool Wallpaper::IsGradient() const
 {
-    return (mpImplWallpaper->mpGradient != nullptr);
+    return bool(mpImplWallpaper->mpGradient);
 }
 
 Gradient Wallpaper::ImplGetApplicationGradient()
@@ -343,18 +304,14 @@ void Wallpaper::SetRect( const Rectangle& rRect )
 {
     if ( rRect.IsEmpty() )
     {
-        if ( mpImplWallpaper->mpRect )
-        {
-            delete mpImplWallpaper->mpRect;
-            mpImplWallpaper->mpRect = nullptr;
-        }
+        mpImplWallpaper->mpRect.reset();
     }
     else
     {
         if ( mpImplWallpaper->mpRect )
             *(mpImplWallpaper->mpRect) = rRect;
         else
-            mpImplWallpaper->mpRect = new Rectangle( rRect );
+            mpImplWallpaper->mpRect = o3tl::make_unique<Rectangle>( rRect );
     }
 }
 
@@ -363,16 +320,12 @@ Rectangle Wallpaper::GetRect() const
     if ( mpImplWallpaper->mpRect )
         return *(mpImplWallpaper->mpRect);
     else
-    {
-        Rectangle aRect;
-        return aRect;
-    }
+        return Rectangle();
 }
 
 bool Wallpaper::IsRect() const
 {
-
-    return (mpImplWallpaper->mpRect != nullptr);
+    return bool(mpImplWallpaper->mpRect);
 }
 
 bool Wallpaper::IsFixed() const
@@ -409,7 +362,7 @@ Wallpaper& Wallpaper::operator=( Wallpaper&& rWallpaper )
 
 bool Wallpaper::operator==( const Wallpaper& rWallpaper ) const
 {
-    return mpImplWallpaper == rWallpaper.mpImplWallpaper;
+    return mpImplWallpaper.same_object(rWallpaper.mpImplWallpaper);
 }
 
 SvStream& ReadWallpaper( SvStream& rIStm, Wallpaper& rWallpaper )