skin engine softlock support for touchscreens:

Modify the %Tl() tag to add a new region 'lock' which will lock/unlock the wps/sbs from touches (hardware buttons still work)
You can also specify a region to work when locked by prepending ^ to the action name (this is probably about to change though)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30218 a1c6a512-1295-4272-9138-f99709370657

apps/action.h

@@ -250,6 +250,7 @@ enum {
     ACTION_TOUCH_MUTE,
     ACTION_TOUCH_SCROLLBAR,
     ACTION_TOUCH_VOLUME,
+    ACTION_TOUCH_SOFTLOCK,
 #endif    
 
     /* USB HID codes */

apps/gui/skin_engine/skin_parser.c

@@ -1039,7 +1039,7 @@ static int parse_lasttouch(struct skin_element *element,
 struct touchaction {const char* s; int action;};
 static const struct touchaction touchactions[] = {
     /* generic actions, convert to screen actions on use */
-    {"none", ACTION_TOUCHSCREEN},
+    {"none", ACTION_TOUCHSCREEN},       {"lock", ACTION_TOUCH_SOFTLOCK },
     {"prev", ACTION_STD_PREV },         {"next", ACTION_STD_NEXT },
     {"rwd", ACTION_STD_PREVREPEAT },    {"ffwd", ACTION_STD_NEXTREPEAT },
     {"hotkey", ACTION_STD_HOTKEY},      {"select", ACTION_STD_OK },
@@ -1122,17 +1122,23 @@ static int parse_touchregion(struct skin_element *element,
     region->value = 0;
     region->last_press = 0xffff;
     region->press_length = PRESS;
+    region->allow_while_locked = false;
     action = element->params[p++].data.text;
 
     strcpy(temp, action);
     action = temp;
     
-    if (*action == '!')
+    switch (*action)
     {
-        region->reverse_bar = true;
+        case '!':
-        action++;
+            region->reverse_bar = true;
+            action++;
+            break;
+        case '^':
+            action++;
+            region->allow_while_locked = true;
+            break;
     }
-
     if(!strcmp(pb_string, action))
         region->action = ACTION_TOUCH_SCROLLBAR;
     else if(!strcmp(vol_string, action))

apps/gui/skin_engine/skin_tokens.c

@@ -1378,6 +1378,10 @@ const char *get_token_value(struct gui_wps *gwps,
 #endif
 
         case SKIN_TOKEN_MAIN_HOLD:
+#ifdef HAVE_TOUCHSCREEN
+            if (data->touchscreen_locked)
+                return "t";
+#endif
 #ifdef HAS_BUTTON_HOLD
             if (button_hold())
 #else

apps/gui/skin_engine/skin_touchsupport.c

@@ -72,6 +72,12 @@ int skin_get_touchaction(struct wps_data *data, int* edge_offset,
             regions = regions->next;
             continue;
         }
+        if (data->touchscreen_locked && 
+            (r->action != ACTION_TOUCH_SOFTLOCK && !r->allow_while_locked))
+        {
+            regions = regions->next;
+            continue;
+        }
         needs_repeat = r->press_length != PRESS;
         /* check if it's inside this viewport */
         if (viewport_point_within_vp(&(r->wvp->vp), x, y))
@@ -150,6 +156,10 @@ int skin_get_touchaction(struct wps_data *data, int* edge_offset,
         }
         switch (returncode)
         {
+            case ACTION_TOUCH_SOFTLOCK:
+                data->touchscreen_locked = !data->touchscreen_locked;
+                returncode = ACTION_NONE;
+                break;
             case ACTION_WPS_PLAY:
                 if (!audio_status())
                 {

apps/gui/skin_engine/wps_internals.h

@@ -189,6 +189,7 @@ struct touchregion {
     short int width;         /* width */
     short int height;        /* height */
     bool reverse_bar;        /* if true 0% is the left or top */
+    bool allow_while_locked;
     enum {
         PRESS,               /* quick press only */
         LONG_PRESS,          /* Long press without repeat */
@@ -308,6 +309,7 @@ struct wps_data
 
 #ifdef HAVE_TOUCHSCREEN
     struct skin_token_list *touchregions;
+    bool touchscreen_locked;
 #endif
 #ifdef HAVE_ALBUMART
     struct skin_albumart *albumart;