adding support for GetThebesSurface() on windows so that we can remove a lot of code.

gfx/src/thebes/nsThebesDeviceContext.cpp

@@ -260,6 +260,7 @@ NS_IMETHODIMP
 nsThebesDeviceContext::CreateRenderingContext(nsIView *aView,
                                               nsIRenderingContext *&aContext)
 {
+    // This is currently only called by the caret code
     NS_ENSURE_ARG_POINTER(aView);
     NS_PRECONDITION(aView->HasWidget(), "View has no widget!");
 
@@ -302,8 +303,6 @@ nsThebesDeviceContext::CreateRenderingContext(nsIWidget *aWidget,
         nsRefPtr<gfxASurface> surface(aWidget->GetThebesSurface());
         if (surface)
             rv = pContext->Init(this, surface);
-        else
-            rv = pContext->Init(this, aWidget);
         if (NS_SUCCEEDED(rv)) {
             aContext = pContext;
             NS_ADDREF(aContext);

gfx/src/thebes/nsThebesDrawingSurface.cpp

@@ -75,16 +75,8 @@ nsThebesDrawingSurface::~nsThebesDrawingSurface()
     // destroy this before any other bits are destroyed,
     // in case they depend on them
     mSurface = nsnull;
-
-#ifdef XP_WIN
-    if (mWidget)
-        mWidget->FreeNativeData(mNativeWidget, NS_NATIVE_GRAPHIC);
-#endif
 }
 
-#ifdef MOZ_ENABLE_GTK2
-#endif
-
 nsresult
 nsThebesDrawingSurface::Init(nsThebesDeviceContext *aDC, gfxASurface *aSurface)
 {
@@ -141,40 +133,15 @@ nsThebesDrawingSurface::Init(nsThebesDeviceContext *aDC, PRUint32 aWidth, PRUint
 nsresult
 nsThebesDrawingSurface::Init (nsThebesDeviceContext *aDC, nsIWidget *aWidget)
 {
-    PR_LOG(gThebesGFXLog, PR_LOG_DEBUG, ("## %p nsThebesDrawingSurface::Init aDC %p aWidget %p\n", this, aDC, aWidget));
-
-#ifdef MOZ_ENABLE_GTK2
-    mNativeWidget = aWidget->GetNativeData(NS_NATIVE_WIDGET);
-#elif XP_WIN
-    mWidget = aWidget; // hold a pointer to this.. not a reference.. because we have to free the dc...
-    mNativeWidget = aWidget->GetNativeData(NS_NATIVE_GRAPHIC);
-#else
-#error Write me!
-#endif
-
-    Init(aDC, mNativeWidget);
-
-    return NS_OK;
+    NS_ERROR("Should never be called.");
+    return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 nsresult
 nsThebesDrawingSurface::Init (nsThebesDeviceContext *aDC, nsNativeWidget aWidget)
 {
-    mDC = aDC;
-    mNativeWidget = aWidget;
-    mWidth = 0;
-    mHeight = 0;
-
-#ifdef MOZ_ENABLE_GTK2
     NS_ERROR("Should never be called.");
-#elif XP_WIN
-    HDC nativeDC = (HDC)aWidget;
-    mSurface = new gfxWindowsSurface(nativeDC);
-#else
-#error write me
-#endif    
-
-    return NS_OK;
+    return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 #ifdef MOZ_ENABLE_GTK2

gfx/src/thebes/nsThebesRenderingContext.cpp

@@ -139,22 +139,8 @@ nsThebesRenderingContext::Init(nsIDeviceContext* aContext, nsIWidget *aWidget)
 NS_IMETHODIMP
 nsThebesRenderingContext::Init(nsIDeviceContext* aContext, nsIDrawingSurface *aSurface)
 {
-    PR_LOG(gThebesGFXLog, PR_LOG_DEBUG, ("## %p nsTRC::Init ctx %p ds %p\n", this, aContext, aSurface));
-
-    nsThebesDrawingSurface *cds = (nsThebesDrawingSurface *) aSurface;
-
-    mDeviceContext = aContext;
-    mWidget = nsnull;
-
-    mLocalDrawingSurface = (nsThebesDrawingSurface *) cds;
-    mDrawingSurface = mLocalDrawingSurface;
-
-    mThebes = new gfxContext(mLocalDrawingSurface->GetThebesSurface());
-
-    //mThebes->SetColor(gfxRGBA(1.0, 1.0, 1.0, 1.0));
-    //mThebes->Paint();
-
-    return (CommonInit());
+    NS_ERROR("Should never be called.");
+    return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 NS_IMETHODIMP