Support estimateUsageInBytes for SystemDependentData

Change-Id: I6074035ed8f90e452915e9ecffdbe9363375e126
Reviewed-on: https://gerrit.libreoffice.org/61306
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@cib.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/vcl/headless/svpgdi.cxx b/vcl/headless/svpgdi.cxx
index b1f622904b5f..e42eb3ed3eaa 100644
--- a/vcl/headless/svpgdi.cxx
+++ b/vcl/headless/svpgdi.cxx
@@ -1056,6 +1056,8 @@ public:
     cairo_path_t* getCairoPath() { return mpCairoPath; }
     bool getNoJoin() const { return mbNoJoin; }
     bool getAntiAliasB2DDraw() const { return mbAntiAliasB2DDraw; }
+
+    virtual sal_Int64 estimateUsageInBytes() const override;
 };
 
 SystemDependentData_CairoPath::SystemDependentData_CairoPath(
@@ -1079,6 +1081,22 @@ SystemDependentData_CairoPath::~SystemDependentData_CairoPath()
     }
 }
 
+sal_Int64 SystemDependentData_CairoPath::estimateUsageInBytes() const
+{
+    sal_Int64 nRetval(0);
+
+    if(nullptr != mpCairoPath)
+    {
+        // per node
+        // - num_data incarnations of
+        // - sizeof(cairo_path_data_t) which is a union of defines and point data
+        //   thus may 2 x sizeof(double)
+        nRetval = mpCairoPath->num_data * sizeof(cairo_path_data_t);
+    }
+
+    return nRetval;
+}
+
 bool SvpSalGraphics::drawPolyLine(
     const basegfx::B2DHomMatrix& rObjectToDevice,
     const basegfx::B2DPolygon& rPolyLine,