Lua: add touchscreen_set_mode & current_path (+ some constants)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21165 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/lua/lauxlib.c

@@ -560,24 +560,35 @@ static int errfile (lua_State *L, const char *what, int fnameindex) {
   return LUA_ERRFILE;
 }
 
-static void make_path(char* dest, size_t dest_size, char* curfile, char* newfile)
+bool get_cur_path(lua_State *L, char* dest, size_t dest_size)
 {
-    char* pos = rb->strrchr(curfile, '/');
-    if(pos != NULL)
+    lua_Debug ar;
+    if(lua_getstack(L, 1, &ar))
     {
-        unsigned int len = (unsigned int)(pos - curfile);
-        len = len + 1 > dest_size ? dest_size - 1 : len;
+        /* Try determining the base path of the current Lua chunk
+            and write it to dest. */
+        lua_getinfo(L, "S", &ar);
 
-        if(len > 0)
-            memcpy(dest, curfile, len);
+        char* curfile = (char*) &ar.source[1];
+        char* pos = rb->strrchr(curfile, '/');
+        if(pos != NULL)
+        {
+            unsigned int len = (unsigned int)(pos - curfile);
+            len = len + 1 > dest_size ? dest_size - 1 : len;
 
-        dest[len] = '/';
-        dest[len+1] = '\0';
+            if(len > 0)
+                memcpy(dest, curfile, len);
+
+            dest[len] = '/';
+            dest[len+1] = '\0';
+
+            return true;
+        }
+        else
+            return false;
     }
     else
-        dest[0] = '\0';
-
-    strncat(dest, newfile, dest_size - strlen(dest));
+        return false;
 }
 
 LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
@@ -590,13 +601,8 @@ LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
   if(lf.f < 0) {
     /* Fallback */
 
-    lua_Debug ar;
-    if(lua_getstack(L, 1, &ar)) {
-      lua_getinfo(L, "S", &ar);
-
-      /* Try determining the base path of the current Lua chunk
-         and prepend it to filename in buffer. */
-      make_path(buffer, sizeof(buffer), (char*)&ar.source[1], (char*)filename);
+    if(get_cur_path(L, buffer, sizeof(buffer))) {
+      strncat(buffer, filename, sizeof(buffer) - strlen(buffer));
       lf.f = rb->open(buffer, O_RDONLY);
     }
 

apps/plugins/lua/rocklib.c

@@ -619,6 +619,15 @@ RB_WRAP(kbd_input)
     return 1;
 }
 
+#ifdef HAVE_TOUCHSCREEN
+RB_WRAP(touchscreen_set_mode)
+{
+    enum touchscreen_mode mode = luaL_checkint(L, 1);
+    rb->touchscreen_set_mode(mode);
+    return 0;
+}
+#endif
+
 RB_WRAP(backlight_on)
 {
     (void)L;
@@ -827,6 +836,18 @@ RB_WRAP(read_bmp_file)
     return 0;
 }
 
+RB_WRAP(current_path)
+{
+    char buffer[MAX_PATH];
+    if(get_cur_path(L, buffer, sizeof(buffer)))
+    {
+        lua_pushstring(L, buffer);
+        return 1;
+    }
+    else
+        return 0;
+}
+
 #define R(NAME) {#NAME, rock_##NAME}
 static const luaL_Reg rocklib[] =
 {
@@ -901,6 +922,7 @@ static const luaL_Reg rocklib[] =
     R(action_userabort),
 #ifdef HAVE_TOUCHSCREEN
     R(action_get_touchscreen_press),
+    R(touchscreen_set_mode),
 #endif
     R(kbd_input),
 
@@ -916,6 +938,7 @@ static const luaL_Reg rocklib[] =
     R(read_bmp_file),
     R(set_viewport),
     R(clear_viewport),
+    R(current_path),
 
     {"new_image", rli_new},
 
@@ -949,6 +972,15 @@ LUALIB_API int luaopen_rock(lua_State *L)
     RB_CONSTANT(FONT_SYSFIXED);
     RB_CONSTANT(FONT_UI);
 
+#ifdef HAVE_TOUCHSCREEN
+    RB_CONSTANT(TOUCHSCREEN_POINT);
+    RB_CONSTANT(TOUCHSCREEN_BUTTON);
+    RB_CONSTANT(BUTTON_TOUCHSCREEN);
+#endif
+
+    RB_CONSTANT(BUTTON_REL);
+    RB_CONSTANT(BUTTON_REPEAT);
+
     rli_init(L);
 
     return 1;

apps/plugins/lua/rocklib.h

@@ -24,6 +24,7 @@
 
 #define LUA_ROCKLIBNAME	"rb"
 LUALIB_API int (luaopen_rock) (lua_State *L);
+bool get_cur_path(lua_State *L, char* dest, size_t dest_size);
 
 #endif /* _ROCKLIB_H_ */