lcd/skin_engine: Add the ability to draw onto the backdrop layer

The framebuffer the lcd driver uses can now be changed on the fly
which means that regular lcd_* drawing functions can draw onto the
"backdrop" buffer. The skin engine can use this to create layered
effects.

Add the tag %VB to a viewport to draw that viewport onto the
backdrop layer. If you want to draw an image onto the backdrop
framebuffer use %x(backdrop filename) instead of %X() inside
a viewport with %VB.

Change-Id: I741498e2af6d4f2d78932cabe8942317893e7cfc
This commit is contained in:
Jonathan Gordon 2012-02-28 22:26:32 +11:00
parent 13f98df5ed
commit 2c71aa9feb
13 changed files with 87 additions and 10 deletions

View file

@ -261,6 +261,9 @@ struct screen screens[NB_SCREENS] =
#endif
#ifdef HAVE_BUTTONBAR
.has_buttonbar=false,
#endif
#if defined(HAVE_LCD_BITMAP)
.set_framebuffer = (void*)lcd_set_framebuffer,
#endif
},
#if NB_SCREENS == 2
@ -356,6 +359,9 @@ struct screen screens[NB_SCREENS] =
#endif
#ifdef HAVE_BUTTONBAR
.has_buttonbar=false,
#endif
#if defined(HAVE_LCD_BITMAP)
.set_framebuffer = (void*)lcd_remote_set_framebuffer,
#endif
}
#endif /* NB_SCREENS == 2 */