+ [task#127424] add getRegionInfo function of think3c widget.

lib/zin/wg/think3c/js/v1.js

@@ -79,3 +79,23 @@ function getCanvasSize(width = 0, height = 0)
 
     return {width, height};
 }
+
+/**
+ * 获取区域信息。
+ * Get region info.
+ *
+ * @param  object  pixels
+ * @param  boolean visited
+ * @param  number  x
+ * @param  number  y
+ * @param  number  width
+ * @param  number  height
+ * @access public
+ * @return object
+ */
+function getRegionInfo(pixels, visited, x, y, width, height)
+{
+    const region = {area: 0, rows: []};
+
+    return region;
+}