Bug 291817 - allow cairo to be used as the svg renderer on win32.

r=pavlov, a=asa.

layout/svg/renderer/src/cairo/Makefile.in

@@ -108,3 +108,7 @@ endif
 ifneq (,$(filter mac cocoa,$(MOZ_WIDGET_TOOLKIT)))
 LOCAL_INCLUDES +=  -I$(topsrcdir)/gfx/src/mac
 endif
+
+ifeq ($(MOZ_WIDGET_TOOLKIT), windows)
+LOCAL_INCLUDES += -I$(topsrcdir)/gfx/src/windows
+endif

layout/svg/renderer/src/cairo/nsSVGCairoCanvas.cpp

@@ -56,6 +56,11 @@
 extern "C" {
 #include <cairo-quartz.h>
 }
+#elif defined(XP_WIN)
+#include "nsDrawingSurfaceWin.h"
+extern "C" {
+#include <cairo-win32.h>
+}
 #else
 #include "nsRenderingContextGTK.h"
 #include <gdk/gdkx.h>
@@ -154,6 +159,13 @@ nsSVGCairoCanvas::Init(nsIRenderingContext *ctx,
   cairo_set_target_quartz_context(mCR, mQuartzRef,
                                   portRect.right - portRect.left,
                                   portRect.bottom - portRect.top);
+#elif defined(XP_WIN)
+  nsDrawingSurfaceWin *surface;
+  HDC hdc;
+  ctx->GetDrawingSurface((nsIDrawingSurface**)&surface);
+  surface->GetDimensions(&mWidth, &mHeight);
+  surface->GetDC(&hdc);
+  cairo_set_target_win32(mCR, hdc);
 #else
   nsDrawingSurfaceGTK *surface;
   ctx->GetDrawingSurface((nsIDrawingSurface**)&surface);