context: Add missing functions to transform between user and backend coordinates

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/cairo-backend-private.h b/src/cairo-backend-private.h
index 1dd5ea083..cd626b81b 100644
--- a/src/cairo-backend-private.h
+++ b/src/cairo-backend-private.h
@@ -96,6 +96,11 @@ struct _cairo_backend {
     void (*device_to_user) (void *cr, double *x, double *y);
     void (*device_to_user_distance) (void *cr, double *x, double *y);
 
+    void (*user_to_backend) (void *cr, double *x, double *y);
+    void (*user_to_backend_distance) (void *cr, double *x, double *y);
+    void (*backend_to_user) (void *cr, double *x, double *y);
+    void (*backend_to_user_distance) (void *cr, double *x, double *y);
+
     cairo_status_t (*new_path) (void *cr);
     cairo_status_t (*new_sub_path) (void *cr);
     cairo_status_t (*move_to) (void *cr, double x, double y);
@@ -168,4 +173,28 @@ struct _cairo_backend {
     cairo_status_t (*show_page) (void *cr);
 };
 
+static inline void
+_cairo_backend_to_user (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->backend_to_user (cr, x, y);
+}
+
+static inline void
+_cairo_backend_to_user_distance (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->backend_to_user_distance (cr, x, y);
+}
+
+static inline void
+_cairo_user_to_backend (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->user_to_backend (cr, x, y);
+}
+
+static inline void
+_cairo_user_to_backend_distance (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->user_to_backend_distance (cr, x, y);
+}
+
 #endif /* CAIRO_BACKEND_PRIVATE_H */