skin_engine: Allow the %St() (setting) skin tag be used as a bar

%St(<setting name>) or %St(<bar tags>, setting, <setting name>)

Change-Id: I71396d683634d4d1ad2357018c4029ecb4229677

apps/gui/option_select.c

@@ -575,3 +575,28 @@ bool option_screen(const struct settings_list *setting,
     return false;
 }
 
+int get_setting_info_for_bar(int setting_id, int *count, int *val)
+{
+    const struct settings_list *setting = &settings[setting_id];
+    int var_type = setting->flags&F_T_MASK;
+    void (*function)(int) = NULL;
+    int oldvalue;
+
+    if (var_type == F_T_INT || var_type == F_T_UINT)
+    {
+        oldvalue = *(int*)setting->setting;
+    }
+    else if (var_type == F_T_BOOL)
+    {
+        oldvalue = *(bool*)setting->setting?1:0;
+    }
+    else
+    {
+        *val = 0;
+        *count = 1;
+        return false; /* only int/bools can go here */
+    }
+
+    val_to_selection(setting, oldvalue, count, val, &function);
+    return true;
+}

apps/gui/option_select.h

@@ -48,4 +48,6 @@ void option_talk_value(const struct settings_list *setting, int value, bool enqu
 /* only use this for int and bool settings */
 int option_value_as_int(const struct settings_list *setting);
 
+int get_setting_info_for_bar(int setting_id, int *count, int *val);
+
 #endif /* _GUI_OPTION_SELECT_H_ */

apps/gui/skin_engine/skin_display.c

@@ -44,6 +44,7 @@
 #include "audio.h"
 #include "tagcache.h"
 #include "list.h"
+#include "option_select.h"
 
 #ifdef HAVE_LCD_BITMAP
 #include "peakmeter.h"
@@ -145,6 +146,13 @@ void draw_progressbar(struct gui_wps *gwps, int line, struct progressbar *pb)
         end = val - min;
         length = max - min;
     }
+    else if (pb->type == SKIN_TOKEN_SETTINGBAR)
+    {
+        int val, count;
+        get_setting_info_for_bar(pb->setting_id, &count, &val);
+        length = count - 1;
+        end = val;
+    }
 #if CONFIG_TUNER
     else if (in_radio_screen() || (get_radio_status() != FMRADIO_OFF))
     {

apps/gui/skin_engine/skin_parser.c

@@ -736,6 +736,10 @@ static int parse_image_special(struct skin_element *element,
 
 #endif /* HAVE_LCD_BITMAP */
 
+static int parse_progressbar_tag(struct skin_element* element,
+                                 struct wps_token *token,
+                                 struct wps_data *wps_data);
+
 static int parse_setting_and_lang(struct skin_element *element,
                                   struct wps_token *token,
                                   struct wps_data *wps_data)
@@ -757,6 +761,13 @@ static int parse_setting_and_lang(struct skin_element *element,
             return WPS_ERROR_INVALID_PARAM;
 #endif
     }
+    else if (element->params_count > 1)
+    {
+        if (element->params_count > 4)
+            return parse_progressbar_tag(element, token, wps_data);
+        else
+            return WPS_ERROR_INVALID_PARAM;
+    }
     else
     {
 #ifndef __PCTOOL__
@@ -891,6 +902,7 @@ static int parse_progressbar_tag(struct skin_element* element,
     pb->image = PTRTOSKINOFFSET(skin_buffer, NULL);
     pb->slider = PTRTOSKINOFFSET(skin_buffer, NULL);
     pb->backdrop = PTRTOSKINOFFSET(skin_buffer, NULL);
+    pb->setting_id = -1;
     pb->invert_fill_direction = false;
     pb->horizontal = true;
 
@@ -1015,6 +1027,19 @@ static int parse_progressbar_tag(struct skin_element* element,
         else if (!strcmp(text, "notouch"))
             suppress_touchregion = true;
 #endif
+		else if (token->type == SKIN_TOKEN_SETTING && !strcmp(text, "setting"))
+		{
+            if (curr_param+1 < element->params_count)
+            {
+                curr_param++;
+                param++;
+                text = SKINOFFSETTOPTR(skin_buffer, param->data.text);
+#ifndef __PCTOOL__
+				if (find_setting_by_cfgname(text, &pb->setting_id) == NULL)
+					return WPS_ERROR_INVALID_PARAM;
+#endif
+			}
+		}
         else if (curr_param == 4)
             image_filename = text;
 
@@ -1060,6 +1085,8 @@ static int parse_progressbar_tag(struct skin_element* element,
         token->type = SKIN_TOKEN_PEAKMETER_RIGHTBAR;
     else if (token->type == SKIN_TOKEN_LIST_NEEDS_SCROLLBAR)
         token->type = SKIN_TOKEN_LIST_SCROLLBAR;
+    else if (token->type == SKIN_TOKEN_SETTING)
+		token->type = SKIN_TOKEN_SETTINGBAR;
     pb->type = token->type;
 
 #ifdef HAVE_TOUCHSCREEN

apps/gui/skin_engine/skin_render.c

@@ -209,6 +209,7 @@ static bool do_non_text_tags(struct gui_wps *gwps, struct skin_draw_info *info,
 #endif
         case SKIN_TOKEN_VOLUMEBAR:
         case SKIN_TOKEN_BATTERY_PERCENTBAR:
+        case SKIN_TOKEN_SETTINGBAR:
 #ifdef HAVE_LCD_BITMAP
         case SKIN_TOKEN_PROGRESSBAR:
         case SKIN_TOKEN_TUNER_RSSI_BAR:

apps/gui/skin_engine/wps_internals.h

@@ -112,6 +112,8 @@ struct progressbar {
     OFFSETTYPE(struct gui_img *) slider;
     bool horizontal;
     OFFSETTYPE(struct gui_img *) backdrop;
+    int setting_id; /* for the setting bar type */
+    
 };
 
 struct draw_rectangle {

lib/skin_parser/tag_table.c

@@ -211,8 +211,9 @@ static const struct tag_info legal_tags[] =
     { SKIN_TOKEN_VIEWPORT_LOAD,         "V"  , "IIiii", 0 },
     
     { SKIN_TOKEN_IMAGE_BACKDROP,        "X"  , "f", SKIN_REFRESH_STATIC|NOBREAK },
-    
-    { SKIN_TOKEN_SETTING,               "St" , "S", SKIN_REFRESH_DYNAMIC },
+    /* This uses the bar tag params also but the first item can be a string
+     * and we don't allow no params. */
+    { SKIN_TOKEN_SETTING,               "St" , "[Si]|iiis*", SKIN_REFRESH_DYNAMIC },
     { SKIN_TOKEN_TRANSLATEDSTRING,      "Sx" , "S", SKIN_REFRESH_STATIC },
     { SKIN_TOKEN_LANG_IS_RTL,           "Sr" , "", SKIN_REFRESH_STATIC },
     

lib/skin_parser/tag_table.h

@@ -246,6 +246,7 @@ enum skin_token_type {
 
     /* Setting option */
     SKIN_TOKEN_SETTING,
+    SKIN_TOKEN_SETTINGBAR,
     SKIN_TOKEN_CURRENT_SCREEN,
     SKIN_TOKEN_LANG_IS_RTL,
     

manual/appendix/wps_tags.tex

@@ -360,6 +360,8 @@ that, it will display the volume value.
     \config{\%St(<setting\tabnlindent{}name>)} & The value of the Rockbox
              setting with the specified name. See \reference{ref:config_file_options}
              for the list of the available settings.\\
+    \config{\%St(...)} & Draw a bar using from the setting.
+            See \reference{ref:bar_tags} for details.\\
   \end{tagmap}
 
 Examples:
@@ -715,6 +717,8 @@ display cycling round the defined sublines. See
     \opt{touchscreen}{
         \item[notouch] -- don't create the touchregion for progress/volume bars.
     }
+  \item[setting] -- Specify the setting name to draw the bar from (bar must be
+    \%St type), the next param is the settings config name.
 \end{description}
 
 Example: \config{\%pb(0,0,-,-,-,nofill, slider, slider\_image, invert)} -- draw