1 files changed, 50 insertions, 0 deletions

diff --git a/apps/plugins/lib/gray_set_drawmode.c b/apps/plugins/lib/gray_set_drawmode.c
new file mode 100644
index 0000000000..b32f2a2211
--- /dev/null
+++ b/apps/plugins/lib/gray_set_drawmode.c
@@ -0,0 +1,50 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Grayscale framework
+* gray_set_drawmode() function
+*
+* This is a generic framework to use grayscale display within Rockbox
+* plugins. It obviously does not work for the player.
+*
+* Copyright (C) 2004 Jens Arnold
+*
+* All files in this archive are subject to the GNU General Public License.
+* See the file COPYING in the source tree root for full license agreement.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#ifndef SIMULATOR /* not for simulator by now */
+#include "plugin.h"
+
+#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
+#include "gray.h"
+
+/*---------------------------------------------------------------------------
+ Set the draw mode for subsequent drawing operations
+ ----------------------------------------------------------------------------
+   drawmode =
+     GRAY_DRAW_INVERSE: Foreground pixels are inverted, background pixels are
+                        left untouched
+     GRAY_DRAW_FG:      Only foreground pixels are drawn
+     GRAY_DRAW_BG:      Only background pixels are drawn
+     GRAY_DRAW_SOLID:   Foreground and background pixels are drawn
+ */
+void gray_set_drawmode(int drawmode)
+{
+    if ((unsigned) drawmode <= GRAY_DRAW_SOLID)
+        _graybuf->drawmode = drawmode;
+}
+
+#endif // #ifdef HAVE_LCD_BITMAP
+#endif // #ifndef SIMULATOR
+