fix bitmap% load-file' method and remove {get,set}-gl-config'

Closes PR 11460

collects/racket/draw/private/bitmap.rkt

@@ -221,11 +221,11 @@
     (define locked 0)
     (define/public (adjust-lock delta) (set! locked (+ locked delta)))
 
-    (def/public (load-bitmap [(make-alts path-string? input-port?) in]
-                             [bitmap-file-kind-symbol? [kind 'unknown]]
-                             [(make-or-false color%) [bg #f]]
-                             [any? [complain-on-failure? #f]])
-      (check-alternate 'load-bitmap)
+    (def/public (load-file [(make-alts path-string? input-port?) in]
+                           [bitmap-file-kind-symbol? [kind 'unknown]]
+                           [(make-or-false color%) [bg #f]]
+                           [any? [complain-on-failure? #f]])
+      (check-alternate 'load-file)
       (release-bitmap-storage)
       (set!-values (s b&w?) (do-load-bitmap in kind bg complain-on-failure?))
       (set! width (if s (cairo_image_surface_get_width s) 0))

collects/scribblings/draw/bitmap-class.scrbl

@@ -83,14 +83,6 @@ monochrome bitmap and @racket[32] for a color bitmap. See also
 
 }
 
-@defmethod[(get-gl-config [config (is-a?/c gl-config%)])
-           void?]{
-
-Returns a copy of this bitmap's requested OpenGL configuration. See
- also @method[bitmap% set-gl-config].
-
-}
-
 @defmethod[(get-height)
            exact-positive-integer?]{
 
@@ -282,18 +274,6 @@ bitmap does not have to be selected into the DC.
 
 }
 
-@defmethod[(set-gl-config [config (is-a?/c gl-config%)])
-           void?]{
-
-Sets the requested OpenGL configuration for this bitmap. The
- configuration is used when the bitmap selected into a drawing
- context, and then a GL context is created for the drawing context.
-
-The given @scheme[gl-config%] object is copied, so that changes to
- the object do not affect the bitmap's configuration.
-
-}
-
 @defmethod[(set-loaded-mask [mask (is-a?/c bitmap%)])
            void?]{
 

collects/scribblings/draw/gl-config-class.scrbl

@@ -5,8 +5,8 @@
 
 A @scheme[gl-config%] object encapsulates configuration information
  for an OpenGL drawing context. Use a @scheme[gl-config%] object as an
- initialization argument for @scheme[canvas%], or provide it to
- @xmethod[bitmap% set-gl-config].
+ initialization argument for @scheme[canvas%] or provide it to
+ @racket[make-gl-bitmap].
 
 
 @defconstructor[()]{

doc/release-notes/racket/Draw_and_GUI_5_1.txt

@@ -42,7 +42,9 @@ alphas; for example, drawing a line in the middle of an empty bitmap
 produces an image with non-zero alpha only at the drawn line.
 
 Only bitmaps created with the new `make-gl-bitmap' function support
-OpenGL drawing.
+OpenGL drawing. The `make-gl-bitmap' function takes a `gl-config%' as
+an argument, and the `get-gl-config' and `set-gl-config' methods of
+`bitmap%' have been removed.
 
 Use the new `make-bitmap', `read-bitmap', `make-monochrome-bitmap',
 `make-screen-bitmap', and `make-gl-bitmap' functions to create