bring the gradient rendering down into SalGraphicsImpl & unx backend

Change-Id: Ia5d5e7d996b4a8818e73f3f741907ff9224f93da

vcl/inc/openglgdiimpl.hxx

@@ -191,6 +191,8 @@ public:
                     long nX, long nY,
                     long nWidth, long nHeight,
                     sal_uInt8 nTransparency ) SAL_OVERRIDE;
+
+    virtual bool drawGradient(const tools::PolyPolygon& rPolygon, const Gradient& rGradient) SAL_OVERRIDE;
 private:
 };
 

vcl/inc/salgdiimpl.hxx

@@ -34,6 +34,7 @@
 
 class SalGraphics;
 class SalBitmap;
+class Gradient;
 
 class VCL_PLUGIN_PUBLIC SalGraphicsImpl
 {
@@ -197,7 +198,7 @@ public:
                     long nWidth, long nHeight,
                     sal_uInt8 nTransparency ) = 0;
 
-
+    virtual bool drawGradient(const tools::PolyPolygon& rPolygon, const Gradient& rGradient) = 0;
 };
 
 #endif

vcl/inc/unx/salgdi.h

@@ -237,7 +237,7 @@ public:
         const ::basegfx::B2DVector& rLineWidth,
         basegfx::B2DLineJoin,
         com::sun::star::drawing::LineCap) SAL_OVERRIDE;
-    virtual bool            drawGradient( const tools::PolyPolygon&, const Gradient& ) SAL_OVERRIDE { return false; };
+    virtual bool            drawGradient( const tools::PolyPolygon&, const Gradient& ) SAL_OVERRIDE;
 
 #if 1 // TODO: remove these obselete methods
     virtual bool        drawPolyLineBezier( sal_uInt32 nPoints,

vcl/opengl/gdiimpl.cxx

@@ -19,6 +19,8 @@
 
 #include "openglgdiimpl.hxx"
 
+#include <vcl/gradient.hxx>
+
 OpenGLSalGraphicsImpl::~OpenGLSalGraphicsImpl()
 {
 }
@@ -270,4 +272,10 @@ bool OpenGLSalGraphicsImpl::drawAlphaRect(
     return false;
 }
 
+bool OpenGLSalGraphicsImpl::drawGradient(const tools::PolyPolygon& /*rPolygon*/,
+        const Gradient& /*rGradient*/)
+{
+    return false;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/unx/generic/gdi/gdiimpl.cxx

@@ -24,6 +24,7 @@
 #include "gdiimpl.hxx"
 
 #include "vcl/salbtype.hxx"
+#include <vcl/gradient.hxx>
 
 #include "unx/salunx.h"
 #include "unx/saldata.hxx"
@@ -1776,4 +1777,9 @@ long X11SalGraphicsImpl::GetGraphicsWidth() const
         return 0;
 }
 
+bool X11SalGraphicsImpl::drawGradient(const tools::PolyPolygon& /*rPolygon*/, const Gradient& /*rGradient*/)
+{
+    return false;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/unx/generic/gdi/gdiimpl.hxx

@@ -33,6 +33,7 @@ class SalGraphics;
 class SalBitmap;
 class SalPolyLine;
 class X11SalGraphics;
+class Gradient;
 
 class X11SalGraphicsImpl : public SalGraphicsImpl
 {
@@ -261,7 +262,7 @@ public:
                     long nWidth, long nHeight,
                     sal_uInt8 nTransparency ) SAL_OVERRIDE;
 
-
+    virtual bool drawGradient(const tools::PolyPolygon& rPolygon, const Gradient& rGradient) SAL_OVERRIDE;
 };
 
 #endif

vcl/unx/generic/gdi/salgdi.cxx

@@ -482,4 +482,9 @@ bool X11SalGraphics::drawPolyLine(
             eLineJoin, eLineCap );
 }
 
+bool X11SalGraphics::drawGradient(const tools::PolyPolygon& rPoly, const Gradient& rGradient)
+{
+    return mpImpl->drawGradient(rPoly, rGradient);
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */