From efd1f4e49facbcdcbb11dbf6a8ead3843df586d3 Mon Sep 17 00:00:00 2001
From: Jonathan Gordon <rockbox@jdgordon.info>
Date: Wed, 5 May 2010 13:48:50 +0000
Subject: Make it possible to move the UI viewport using conditional viewports.

%Vi|<label>|<Usual %Vi params>|  <- specify the possible viewports to use
%VI<label> <- make the UI viewport use the %Vi definition with the <label> label.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25826 a1c6a512-1295-4272-9138-f99709370657
---
 apps/gui/skin_engine/skin_display.c  |  4 ++++
 apps/gui/skin_engine/skin_parser.c   | 24 +++++++++++++++++++++---
 apps/gui/skin_engine/skin_tokens.h   |  1 +
 apps/gui/skin_engine/wps_debug.c     |  4 +++-
 apps/gui/skin_engine/wps_internals.h |  2 +-
 apps/gui/statusbar-skinned.c         | 18 ++++++++++++++++--
 apps/gui/statusbar-skinned.h         |  1 +
 7 files changed, 47 insertions(+), 7 deletions(-)

diff --git a/apps/gui/skin_engine/skin_display.c b/apps/gui/skin_engine/skin_display.c
index a0b3497683..475f3a102c 100644
--- a/apps/gui/skin_engine/skin_display.c
+++ b/apps/gui/skin_engine/skin_display.c
@@ -775,6 +775,10 @@ static bool get_line(struct gui_wps *gwps,
                 }
             }
                 break;
+            case WPS_TOKEN_UIVIEWPORT_ENABLE:
+                    sb_set_info_vp(gwps->display->screen_type, 
+                                   data->tokens[i].value.i|VP_INFO_LABEL);
+                break;
 #ifdef HAVE_LCD_BITMAP
             case WPS_VIEWPORT_CUSTOMLIST:
                 draw_playlist_viewer_list(gwps, data->tokens[i].value.data);
diff --git a/apps/gui/skin_engine/skin_parser.c b/apps/gui/skin_engine/skin_parser.c
index 6ea0180534..78ec26eaf9 100644
--- a/apps/gui/skin_engine/skin_parser.c
+++ b/apps/gui/skin_engine/skin_parser.c
@@ -370,6 +370,8 @@ static const struct wps_tag all_tags[] = {
 
     { WPS_VIEWPORT_ENABLE,                "Vd",  WPS_REFRESH_DYNAMIC,
                                                     parse_viewport_display },
+    { WPS_TOKEN_UIVIEWPORT_ENABLE,        "VI",  WPS_REFRESH_STATIC,
+                                                    parse_viewport_display },
 #ifdef HAVE_LCD_BITMAP
     { WPS_VIEWPORT_CUSTOMLIST,            "Vp",  WPS_REFRESH_STATIC, parse_playlistview },
     { WPS_TOKEN_LIST_TITLE_TEXT,          "Lt",  WPS_REFRESH_DYNAMIC, NULL },
@@ -915,9 +917,25 @@ static int parse_viewport(const char *wps_bufptr,
 
     if (*ptr == 'i')
     {
-        skin_vp->label = VP_INFO_LABEL;
-        skin_vp->hidden_flags = VP_NEVER_VISIBLE;
-        ++ptr;
+        if (*(ptr+1) == '|')
+        {
+            char label = *(ptr+2);
+            if (label >= 'a' && label <= 'z')
+            {
+                skin_vp->hidden_flags = VP_NEVER_VISIBLE;
+                skin_vp->label = VP_INFO_LABEL|label;
+                ptr += 3;
+            }
+            else
+            {
+                skin_vp->label = VP_INFO_LABEL|VP_DEFAULT_LABEL;
+                skin_vp->hidden_flags = VP_NEVER_VISIBLE;
+                ++ptr;            
+            }
+        }
+        else
+            return WPS_ERROR_INVALID_PARAM; /* malformed token: e.g. %Cl7  */
+        
     }
     else if (*ptr == 'l')
     {
diff --git a/apps/gui/skin_engine/skin_tokens.h b/apps/gui/skin_engine/skin_tokens.h
index 3b155509f9..aefae40af9 100644
--- a/apps/gui/skin_engine/skin_tokens.h
+++ b/apps/gui/skin_engine/skin_tokens.h
@@ -55,6 +55,7 @@ enum wps_token_type {
     /* Viewport display */
     WPS_VIEWPORT_ENABLE,
     WPS_VIEWPORT_CUSTOMLIST,
+    WPS_TOKEN_UIVIEWPORT_ENABLE,
     
     /* Battery */
   TOKEN_MARKER_BATTERY,
diff --git a/apps/gui/skin_engine/wps_debug.c b/apps/gui/skin_engine/wps_debug.c
index 26554b1db6..4186e306e3 100644
--- a/apps/gui/skin_engine/wps_debug.c
+++ b/apps/gui/skin_engine/wps_debug.c
@@ -490,7 +490,9 @@ static char *get_token_desc(struct wps_token *token, char *buf,
             break;
 #endif
         case WPS_VIEWPORT_ENABLE:
-            snprintf(buf, bufsize, "enable VP: %c",
+        case WPS_TOKEN_UIVIEWPORT_ENABLE:
+            snprintf(buf, bufsize, "enable %sVP: %c",
+                     token->type == WPS_TOKEN_UIVIEWPORT_ENABLE ? "UI " : "",
                      (char)token->value.i);
             break;
         case WPS_TOKEN_BUTTON_VOLUME:
diff --git a/apps/gui/skin_engine/wps_internals.h b/apps/gui/skin_engine/wps_internals.h
index a014770017..edfae68e84 100644
--- a/apps/gui/skin_engine/wps_internals.h
+++ b/apps/gui/skin_engine/wps_internals.h
@@ -203,7 +203,7 @@ struct skin_line {
 #define VP_NEVER_VISIBLE    0x8
 #define VP_DEFAULT_LABEL    '|'
 #define VP_NO_LABEL         '-'
-#define VP_INFO_LABEL       '_'
+#define VP_INFO_LABEL       0x80
 struct skin_viewport {
     struct viewport vp;   /* The LCD viewport struct */
     struct skin_line *lines;
diff --git a/apps/gui/statusbar-skinned.c b/apps/gui/statusbar-skinned.c
index 0902950599..af02b9b54d 100644
--- a/apps/gui/statusbar-skinned.c
+++ b/apps/gui/statusbar-skinned.c
@@ -86,15 +86,29 @@ void sb_skin_data_load(enum screen_type screen, const char *buf, bool isfile)
         }
         /* hide this viewport, forever */
         vp->hidden_flags = VP_NEVER_VISIBLE;
+        sb_set_info_vp(screen, VP_INFO_LABEL|VP_DEFAULT_LABEL);
     }
 
     if (!success && isfile)
         sb_create_from_settings(screen);
 }
-
+static char infovp_label[NB_SCREENS];
+static char oldinfovp_label[NB_SCREENS];
+void sb_set_info_vp(enum screen_type screen, char label)
+{
+    infovp_label[screen] = label;
+}
+    
 struct viewport *sb_skin_get_info_vp(enum screen_type screen)
 {
-    return &find_viewport(VP_INFO_LABEL, sb_skin[screen].data)->vp;
+    if (oldinfovp_label[screen] != infovp_label[screen])
+    {
+        /* UI viewport changed, so force a redraw */
+        oldinfovp_label[screen] = infovp_label[screen];
+        viewportmanager_theme_enable(screen, false, NULL);
+        viewportmanager_theme_undo(screen, true);
+    }        
+    return &find_viewport(infovp_label[screen], sb_skin[screen].data)->vp;
 }
 
 #if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
diff --git a/apps/gui/statusbar-skinned.h b/apps/gui/statusbar-skinned.h
index 7558d5a6f8..eb27b06196 100644
--- a/apps/gui/statusbar-skinned.h
+++ b/apps/gui/statusbar-skinned.h
@@ -36,6 +36,7 @@ void sb_skin_data_load(enum screen_type screen, const char *buf, bool isfile);
 
 void sb_create_from_settings(enum screen_type screen);
 void sb_skin_init(void) INIT_ATTR;
+void sb_set_info_vp(enum screen_type screen, char label);
 struct viewport *sb_skin_get_info_vp(enum screen_type screen);
 void sb_skin_update(enum screen_type screen, bool force);
 
-- 
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