[retro-gtk] retro-cairo-display: Normalize draw()

[Adrien Plazas <aplazas src gnome org>]

commit d3baf508c59d4cc6e9567c9651ad009566a4ce00
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Feb 22 18:04:41 2020 +0500

    retro-cairo-display: Normalize draw()
    
    Rename the function from real_draw() to draw(), remove checks as it's a
    vfunc, simplify overriding.

 retro-gtk/retro-cairo-display.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/retro-gtk/retro-cairo-display.c b/retro-gtk/retro-cairo-display.c
index 717e74f..a110b1a 100644
--- a/retro-gtk/retro-cairo-display.c
+++ b/retro-gtk/retro-cairo-display.c
@@ -78,10 +78,10 @@ retro_cairo_display_draw_background (RetroCairoDisplay *self,
 }
 
 static gboolean
-retro_cairo_display_real_draw (GtkWidget *base,
-                               cairo_t   *cr)
+retro_cairo_display_draw (GtkWidget *widget,
+                          cairo_t   *cr)
 {
-  RetroCairoDisplay *self = RETRO_CAIRO_DISPLAY (base);
+  RetroCairoDisplay *self = RETRO_CAIRO_DISPLAY (widget);
   GdkPixbuf *to_draw;
   gboolean has_alpha;
   gint width;
@@ -96,9 +96,6 @@ retro_cairo_display_real_draw (GtkWidget *base,
   gdouble ys;
   cairo_pattern_t *source;
 
-  g_return_val_if_fail (self != NULL, FALSE);
-  g_return_val_if_fail (cr != NULL, FALSE);
-
   retro_cairo_display_draw_background (self, cr);
 
   if (self->pixbuf == NULL)
@@ -199,8 +196,7 @@ retro_cairo_display_class_init (RetroCairoDisplayClass *klass)
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 
-  ((GtkWidgetClass *) klass)->draw = (gboolean (*) (GtkWidget *, cairo_t *)) retro_cairo_display_real_draw;
-
+  widget_class->draw = retro_cairo_display_draw;
   object_class->finalize = retro_cairo_display_finalize;
   object_class->get_property = retro_cairo_display_get_property;
   object_class->set_property = retro_cairo_display_set_property;