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, 119 insertions, 0 deletions

diff --git a/apps/gui/option_select.h b/apps/gui/option_select.h
new file mode 100644
index 0000000000..c6a5e196f0
--- /dev/null
+++ b/apps/gui/option_select.h
@@ -0,0 +1,119 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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.
+ *
+ ****************************************************************************/
+
+#ifndef _GUI_OPTION_SELECT_H_
+#define _GUI_OPTION_SELECT_H_
+#include "settings.h"
+
+typedef void option_formatter(char* dest, int dest_length,
+                              int variable, const char* unit);
+
+struct option_select
+{
+    const char * title;
+    int min_value;
+    int max_value;
+    int step;
+    int option;
+    const char * extra_string;
+    /* In the case the option is a number */
+    option_formatter *formatter;
+    const struct opt_items * items;
+    bool limit_loop;
+};
+
+/*
+ * Initializes an option containing a numeric values
+ *  - title : the title of the option
+ *  - init_value : the initial value the number will be
+ *  - min_value, max_value : bounds to the value
+ *  - step : the ammount you want to add / withdraw to the initial number
+ *           each time a key is pressed
+ *  - unit : the unit in which the value is  (ex "s", "bytes", ...)
+ *  - formatter : a callback function that generates a string
+ *                from the number it gets
+ */
+extern 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);
+
+/*
+ * Initializes an option containing a list of choices
+ *  - title : the title of the option
+ *  - selected : the initially selected item
+ *  - items : the list of items, defined in settings.h
+ *  - nb_items : the number of items in the 'items' list
+ */
+extern void option_select_init_items(struct option_select * opt,
+                                     const char * title,
+                                     int selected,
+                                     const struct opt_items * items,
+                                     int nb_items);
+
+/*
+ * Gets the selected option
+ *  - opt : the option struct
+ *  - buffer : a buffer to eventually format the option
+ * Returns the selected option
+ */
+extern const char * option_select_get_text(struct option_select * opt, char * buffer);
+
+/*
+ * Selects the next value
+ *  - opt : the option struct
+ */
+extern void option_select_next(struct option_select * opt);
+
+/*
+ * Selects the previous value
+ *  - opt : the option struct
+ */
+extern void option_select_prev(struct option_select * opt);
+
+/*
+ * Returns the selected number
+ *  - opt : the option struct
+ */
+#define option_select_get_selected(_opt) \
+    (_opt)->option
+
+/*
+ * Returns the title
+ *  - opt : the option struct
+ */
+#define option_select_get_title(_opt) \
+    (_opt)->title
+
+/*
+ * Tells the option selector wether it should stop when reaching the min/max value
+ * or should continue (by going to max/min)
+ *  - opt : the option struct
+ *  - scroll :
+ *    - true : stops when reaching min/max
+ *    - false : continues to go to max/min when reaching min/max
+ */
+#define option_select_limit_loop(_opt, loop) \
+    (_opt)->limit_loop=loop
+
+#endif /* _GUI_OPTION_SELECT_H_ */