Automate error checking for fallback-resolution.

For this we extend the boilerplate get_image() routines to extract a
single page out of a paginated document and then proceed to manually
check each page of the fallback-resolution test.

(Well that's the theory, in practice SVG doesn't support multiple pages
and so we just generate a new surface for each resolution. But the
infrastructure is in place so that we can automate other tests,
e.g. test/multi-pages.)

1 files changed, 7 insertions, 0 deletions

diff --git a/boilerplate/cairo-boilerplate.h b/boilerplate/cairo-boilerplate.h
index 7b6dbc31c..11fb1c3c0 100644
--- a/boilerplate/cairo-boilerplate.h
+++ b/boilerplate/cairo-boilerplate.h
@@ -123,11 +123,16 @@ typedef cairo_surface_t *
 				       int                        id,
 				       void			**closure);
 
+typedef void
+(*cairo_boilerplate_force_fallbacks_t) (cairo_surface_t *surface,
+	                                unsigned int flags);
+
 typedef cairo_status_t
 (*cairo_boilerplate_finish_surface_t) (cairo_surface_t *surface);
 
 typedef cairo_surface_t *
 (*cairo_boilerplate_get_image_surface_t) (cairo_surface_t *surface,
+	                                  int page,
 					  int width,
 					  int height);
 
@@ -149,6 +154,7 @@ typedef struct _cairo_boilerplate_target
     cairo_content_t				 content;
     unsigned int				 error_tolerance;
     cairo_boilerplate_create_surface_t		 create_surface;
+    cairo_boilerplate_force_fallbacks_t		 force_fallbacks;
     cairo_boilerplate_finish_surface_t		 finish_surface;
     cairo_boilerplate_get_image_surface_t	 get_image_surface;
     cairo_boilerplate_write_to_png_t		 write_to_png;
@@ -165,6 +171,7 @@ cairo_boilerplate_free_targets (cairo_boilerplate_target_t **targets);
 
 cairo_surface_t *
 _cairo_boilerplate_get_image_surface (cairo_surface_t *src,
+				      int page,
 				      int width,
 				      int height);
 cairo_surface_t *