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, 67 insertions, 0 deletions

diff --git a/apps/plugins/lib/gray_putsxy.c b/apps/plugins/lib/gray_putsxy.c
new file mode 100644
index 0000000000..18cf2bac78
--- /dev/null
+++ b/apps/plugins/lib/gray_putsxy.c
@@ -0,0 +1,67 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Grayscale framework
+* gray_putsxy() 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"
+
+/*---------------------------------------------------------------------------
+ Display text starting at (x, y) with the current font and drawinfo
+ ----------------------------------------------------------------------------
+ The drawmode is used as described for gray_set_drawmode()
+ */
+void gray_putsxy(int x, int y, unsigned char *str)
+{
+    int ch, width;
+    bitmap_t *bits;
+    struct font *pf = _graybuf->curfont;
+
+    if ((unsigned) x >= (unsigned) _graybuf->width
+        || (unsigned) y >= (unsigned) _graybuf->height)
+        return;
+
+    while ((ch = *str++) != '\0' && x < _graybuf->width)
+    {
+        /* check input range */
+        if (ch < pf->firstchar || ch >= pf->firstchar + pf->size)
+            ch = pf->defaultchar;
+        ch -= pf->firstchar;
+
+        /* get proportional width and glyph bits */
+        width = pf->width ? pf->width[ch] : pf->maxwidth;
+        bits = pf->bits + (pf->offset ? pf->offset[ch] 
+                                      : MULU16(pf->height, ch));
+
+        gray_drawbitmap((unsigned char*) bits, x, y, width, pf->height,
+                        width);
+        x += width;
+    }
+}
+
+#endif // #ifdef HAVE_LCD_BITMAP
+#endif // #ifndef SIMULATOR
+