Fix helloworld.lua for mono targets (+ add lcd_mono_bitmap() & lcd_mono_bitmap_part() to Lua API)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21291 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 7 insertions, 1 deletions

diff --git a/apps/plugins/helloworld.lua b/apps/plugins/helloworld.lua
index 047e31a644..c0e75540c7 100644
--- a/apps/plugins/helloworld.lua
+++ b/apps/plugins/helloworld.lua
@@ -35,7 +35,10 @@ function draw_image(img)
 
     local func = rb.lcd_bitmap_transparent_part
     if(func == nil) then
-        func = rb.lcd_bitmap_part -- Fallback version for mono targets
+        func = rb.lcd_bitmap_part -- Fallback version for grayscale targets
+        if(func == nil) then
+            func = rb.lcd_mono_bitmap_part -- Fallback version for mono targets
+        end
     end
     func(img, 0, 0, img:width(), x, y, img:width(), img:height())
     rb.lcd_update()
@@ -120,6 +123,9 @@ end
 local backdrop = rb.read_bmp_file("/.rockbox/icons/tango_small_viewers.bmp") -- This image should always be present?
 if(backdrop == nil) then
     backdrop = rb.read_bmp_file("/.rockbox/icons/tango_small_viewers_mono.bmp") -- Try using the mono version
+    if(backdrop == nil) then
+        backdrop = rb.read_bmp_file("/.rockbox/icons/viewers.bmp") -- Try using the builtin version
+    end
 end
 -- Draws the image using our own draw_image() function; see up
 draw_image(backdrop)