Add %LR and %LC to get at the current row and columm in skinned lists.

This allows list items to be rendered differently depending on their
on-screen position, allowing things like gradients or nonlinear alignment

Change-Id: I1d9c080f97e83707f0e80f57abc762cb2b94f6ed

apps/gui/bitmap/list-skinned.c

@@ -45,6 +45,9 @@
 static struct listitem_viewport_cfg *listcfg[NB_SCREENS] = {NULL};
 static struct gui_synclist *current_list;
 
+static int current_row;
+static int current_column;
+
 void skinlist_set_cfg(enum screen_type screen,
                       struct listitem_viewport_cfg *cfg)
 {
@@ -88,6 +91,17 @@ int skinlist_get_item_number()
     return current_drawing_line;
 }
 
+int skinlist_get_item_row()
+{
+    return current_row;
+}
+
+int skinlist_get_item_column()
+{
+    return current_column;
+}
+
+
 const char* skinlist_get_item_text(int offset, bool wrap, char* buf, size_t buf_size)
 {
     int item = offset_to_item(offset, wrap);
@@ -181,7 +195,7 @@ bool skinlist_draw(struct screen *display, struct gui_synclist *list)
         current_drawing_line = list_start_item+cur_line;
         is_selected = list->show_selection_marker &&
                 list_start_item+cur_line == list->selected_item;
-        
+
         for (viewport = SKINOFFSETTOPTR(get_skin_buffer(wps.data), listcfg[screen]->data->tree);
              viewport;
              viewport = SKINOFFSETTOPTR(get_skin_buffer(wps.data), viewport->next))
@@ -206,14 +220,15 @@ bool skinlist_draw(struct screen *display, struct gui_synclist *list)
             if (listcfg[screen]->tile)
             {
                 int cols = (parent->width / listcfg[screen]->width);
-                int col = (cur_line)%cols;
+                current_column = (cur_line)%cols;
-                int row = (cur_line)/cols;
+                current_row = (cur_line)/cols;
                 
-                skin_viewport->vp.x = parent->x + listcfg[screen]->width*col + origional_x;
+                skin_viewport->vp.x = parent->x + listcfg[screen]->width*current_column + origional_x;
-                skin_viewport->vp.y = parent->y + listcfg[screen]->height*row + origional_y;
+                skin_viewport->vp.y = parent->y + listcfg[screen]->height*current_row + origional_y;
             }
             else
             {
+                current_row = cur_line;
                 skin_viewport->vp.x = parent->x + origional_x;
                 skin_viewport->vp.y = parent->y + origional_y +
                                    (listcfg[screen]->height*cur_line);

apps/gui/list.h

@@ -194,6 +194,8 @@ void skinlist_set_cfg(enum screen_type screen,
                       struct listitem_viewport_cfg *cfg);
 const char* skinlist_get_item_text(int offset, bool wrap, char* buf, size_t buf_size);
 int skinlist_get_item_number(void);
+int skinlist_get_item_row(void);
+int skinlist_get_item_column(void);
 enum themable_icons skinlist_get_item_icon(int offset, bool wrap);
 bool skinlist_needs_scrollbar(enum screen_type screen);
 void skinlist_get_scrollbar(int* nb_item, int* first_shown, int* last_shown);

apps/gui/skin_engine/skin_tokens.c

@@ -981,6 +981,16 @@ const char *get_token_value(struct gui_wps *gwps,
             struct listitem *li = (struct listitem *)SKINOFFSETTOPTR(get_skin_buffer(data), token->value.data);
             return skinlist_get_item_text(li->offset, li->wrap, buf, buf_size);
         }
+        case SKIN_TOKEN_LIST_ITEM_ROW:
+            if (intval)
+                *intval = skinlist_get_item_row() + 1;
+            snprintf(buf, buf_size, "%d",skinlist_get_item_row() + 1);
+            return buf;
+        case SKIN_TOKEN_LIST_ITEM_COLUMN:
+            if (intval)
+                *intval = skinlist_get_item_column() + 1;
+            snprintf(buf, buf_size, "%d",skinlist_get_item_column() + 1);
+            return buf;
         case SKIN_TOKEN_LIST_ITEM_NUMBER:
             if (intval)
                 *intval = skinlist_get_item_number() + 1;

lib/skin_parser/tag_table.c

@@ -191,6 +191,8 @@ static const struct tag_info legal_tags[] =
     { SKIN_TOKEN_VIEWPORT_CUSTOMLIST,   "Vp" , "IC", SKIN_REFRESH_DYNAMIC|NOBREAK },
     { SKIN_TOKEN_LIST_TITLE_TEXT,       "Lt" , "", SKIN_REFRESH_DYNAMIC },
     { SKIN_TOKEN_LIST_ITEM_TEXT,        "LT", "|IS",  SKIN_REFRESH_DYNAMIC },
+    { SKIN_TOKEN_LIST_ITEM_ROW,         "LR", "",  SKIN_REFRESH_DYNAMIC },
+    { SKIN_TOKEN_LIST_ITEM_COLUMN,      "LC", "",  SKIN_REFRESH_DYNAMIC },
     { SKIN_TOKEN_LIST_ITEM_NUMBER,      "LN", "",  SKIN_REFRESH_DYNAMIC },
     { SKIN_TOKEN_LIST_TITLE_ICON,       "Li" , "", SKIN_REFRESH_DYNAMIC },
     { SKIN_TOKEN_LIST_ITEM_ICON,        "LI", "|IS",  SKIN_REFRESH_DYNAMIC },

lib/skin_parser/tag_table.h

@@ -219,6 +219,8 @@ enum skin_token_type {
     SKIN_TOKEN_LIST_SELECTED_ITEM_CFG,
     SKIN_TOKEN_LIST_ITEM_IS_SELECTED,
     SKIN_TOKEN_LIST_ITEM_TEXT,
+    SKIN_TOKEN_LIST_ITEM_ROW,
+    SKIN_TOKEN_LIST_ITEM_COLUMN,
     SKIN_TOKEN_LIST_ITEM_NUMBER,
     SKIN_TOKEN_LIST_ITEM_ICON,
     SKIN_TOKEN_LIST_NEEDS_SCROLLBAR,