Split grayscale library into several files to make up a real function library. Significantly decreases binary size for plugins using it.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4802 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 62 insertions, 0 deletions

diff --git a/apps/plugins/lib/gray_drawrect.c b/apps/plugins/lib/gray_drawrect.c
new file mode 100644
index 0000000..bd0bb71
--- /dev/null
+++ b/apps/plugins/lib/gray_drawrect.c
@@ -0,0 +1,62 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Grayscale framework
+* gray_drawrect() 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"
+
+/*---------------------------------------------------------------------------
+ Draw a (hollow) rectangle with the current drawinfo
+ ----------------------------------------------------------------------------
+ See gray_drawpixel() for details
+ */
+void gray_drawrect(int x, int y, int nx, int ny)
+{
+    int x2, y2;
+
+    if ((unsigned) x >= (unsigned) _graybuf->width
+        || (unsigned) y >= (unsigned) _graybuf->height)
+        return;
+
+    if ((unsigned) (y + ny) >= (unsigned) _graybuf->height) /* clip bottom */
+        ny = _graybuf->height - y;
+
+    if ((unsigned) (x + nx) >= (unsigned) _graybuf->width) /* clip right */
+        nx = _graybuf->width - x;
+        
+    x2 = x + nx - 1;
+    y2 = y + ny - 1;
+
+    gray_horline(x, x2, y);
+    gray_horline(x, x2, y2);
+    gray_verline(x, y, y2);
+    gray_verline(x2, y, y2);
+}
+
+#endif // #ifdef HAVE_LCD_BITMAP
+#endif // #ifndef SIMULATOR
+