Add backdrop functions to the multiscreen api and add a enum backdrop_type parameter for different backdrops (main, wps), symplifying calls and removing dozens of #ifdefs (stubs added for non-backdrop displays that can't do backdrops).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22176 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 4 insertions, 0 deletions

diff --git a/apps/screen_access.h b/apps/screen_access.h
index c76d2b1c86..f0fed01722 100644
--- a/apps/screen_access.h
+++ b/apps/screen_access.h
@@ -24,6 +24,7 @@
 
 #include "lcd.h"
 #include "buttonbar.h"
+#include "backdrop.h"
 
 enum screen_type {
     SCREEN_MAIN
@@ -152,6 +153,9 @@ struct screen
     void (*backlight_off)(void);
     bool (*is_backlight_on)(bool ignore_always_off);
     void (*backlight_set_timeout)(int index);
+    bool (*backdrop_load)(enum backdrop_type bdrop, const char* filename);
+    void (*backdrop_unload)(enum backdrop_type bdrop);
+    void (*backdrop_show)(enum backdrop_type bdrop);
 };
 
 #if defined(HAVE_LCD_BITMAP) || defined(HAVE_REMOTE_LCD)