add DrawHandle to DecorationView

Change-Id: Ie063071cc57d756fd5da20a15533a6857940f676

include/vcl/decoview.hxx

@@ -73,8 +73,7 @@ private:
     OutputDevice*       mpOutDev;
 
 public:
-                        DecorationView( OutputDevice* pOutDev )
-                            { mpOutDev = pOutDev; }
+    DecorationView(OutputDevice* pOutDev);
 
     void                DrawSymbol( const Rectangle& rRect, SymbolType eType,
                                     const Color& rColor, sal_uInt16 nStyle = 0 );
@@ -86,6 +85,7 @@ public:
     Rectangle           DrawFrame( const Rectangle& rRect, sal_uInt16 nStyle = FRAME_DRAW_OUT );
     Rectangle           DrawButton( const Rectangle& rRect, sal_uInt16 nStyle );
     void                DrawSeparator( const Point& rStart, const Point& rStop, bool bVertical = true );
+    void                DrawHandle(const Rectangle& rRectangle, bool bVertical = true);
 };
 
 #endif // INCLUDED_VCL_DECOVIEW_HXX

vcl/source/window/decoview.cxx

@@ -822,7 +822,11 @@ void ImplDrawFrame( OutputDevice *const pDev, Rectangle& rRect,
     }
 }
 
-}
+} // end anonymous namespace
+
+DecorationView::DecorationView(OutputDevice* pOutDev) :
+    mpOutDev(pOutDev)
+{}
 
 void DecorationView::DrawSymbol( const Rectangle& rRect, SymbolType eType,
                                  const Color& rColor, sal_uInt16 nStyle )
@@ -1081,4 +1085,45 @@ void DecorationView::DrawSeparator( const Point& rStart, const Point& rStop, boo
     mpOutDev->Pop();
 }
 
+void DecorationView::DrawHandle(const Rectangle& rRect, bool bVertical)
+{
+    const StyleSettings& rStyleSettings = mpOutDev->GetSettings().GetStyleSettings();
+
+    Size aOutputSize = rRect.GetSize();
+
+    mpOutDev->SetLineColor(rStyleSettings.GetDarkShadowColor());
+    mpOutDev->SetFillColor(rStyleSettings.GetDarkShadowColor());
+
+    sal_Int32 nNumberOfPoints = 3;
+
+    long nHalfWidth = aOutputSize.Width() / 2.0f;
+    long nHalfHeight = aOutputSize.Height() / 2.0f;
+
+    float fDistance = bVertical ? aOutputSize.Height() : aOutputSize.Width();
+    fDistance /= (nNumberOfPoints + 1);
+
+    long nRadius = bVertical ? aOutputSize.Width() : aOutputSize.Height();
+    nRadius /= (nNumberOfPoints + 2);
+
+    for (long i = 1; i <= nNumberOfPoints; i++)
+    {
+        Rectangle aLocation;
+        if (bVertical)
+        {
+            aLocation = Rectangle(nHalfWidth - nRadius,
+                                  std::round(fDistance * i) - nRadius,
+                                  nHalfWidth + nRadius,
+                                  std::round(fDistance * i) + nRadius);
+        }
+        else
+        {
+            aLocation = Rectangle(std::round(fDistance * i) - nRadius,
+                                  nHalfHeight - nRadius,
+                                  std::round(fDistance * i) + nRadius,
+                                  nHalfHeight + nRadius);
+        }
+        mpOutDev->DrawEllipse(aLocation);
+    }
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */