Added multi-screen support for quickscreen (mostly rewritten from scratch) and USB screen ; just looking at the hour makes me think it could be buggy

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8039 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 102 insertions, 0 deletions

diff --git a/apps/gui/option_select.c b/apps/gui/option_select.c
new file mode 100644
index 0000000000..0e169617c4
--- /dev/null
+++ b/apps/gui/option_select.c
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Kevin Ferrare
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#include "option_select.h"
+#include "sprintf.h"
+#include "kernel.h"
+#include "lang.h"
+
+void option_select_init_numeric(struct option_select * opt,
+                                const char * title,
+                                int init_value,
+                                int min_value,
+                                int max_value,
+                                int step,
+                                const char * unit,
+                                option_formatter *formatter)
+{
+    opt->title=title;
+    opt->min_value=min_value;
+    opt->max_value=max_value+1;
+    opt->option=init_value;
+    opt->step=step;
+    opt->extra_string=unit;
+    opt->formatter=formatter;
+    opt->items=NULL;
+    opt->limit_loop=false;
+}
+
+void option_select_init_items(struct option_select * opt,
+                              const char * title,
+                              int selected,
+                              const struct opt_items * items,
+                              int nb_items)
+{
+    opt->title=title;
+    opt->min_value=0;
+    opt->max_value=nb_items;
+    opt->option=selected;
+    opt->step=1;
+    opt->formatter=NULL;
+    opt->items=items;
+    opt->limit_loop=false;
+}
+
+void option_select_next(struct option_select * opt)
+{
+    if(opt->option + opt->step >= opt->max_value)
+    {
+        if(!opt->limit_loop)
+        {
+            if(opt->option==opt->max_value-1)
+                opt->option=opt->min_value;
+            else
+                opt->option=opt->max_value-1;
+        }
+    }
+    else
+        opt->option+=opt->step;
+}
+
+void option_select_prev(struct option_select * opt)
+{
+    if(opt->option - opt->step < opt->min_value)
+    {
+        if(!opt->limit_loop)
+        {
+            if(opt->option==opt->min_value)
+                opt->option=opt->max_value-1;
+            else
+                opt->option=opt->min_value;
+        }
+    }
+    else
+        opt->option-=opt->step;
+}
+
+const char * option_select_get_text(struct option_select * opt, char * buffer)
+{
+    if(opt->items)
+        return(P2STR(opt->items[opt->option].string));
+    if(!opt->formatter)
+        snprintf(buffer, sizeof buffer,"%d %s", opt->option, opt->extra_string);
+    else
+        opt->formatter(buffer, sizeof buffer, opt->option, opt->extra_string);
+    return(buffer);
+}