Add swipe control to screensaver page

Solves #665

advanced/hmi/nspanel_CJK_us_code/screensaver.txt

@@ -24,6 +24,18 @@ Variable (int32) orign
         Scope: local
         Value: 0
     
+Timer swipestore
+    Attributes
+        ID         : 4
+        Scope      : local
+        Period (ms): 50
+        Enabled    : no
+    
+    Events
+        Timer Event
+            swipex=tch0
+            swipey=tch1
+        
 TouchCap wakeup
     Attributes
         ID   : 1
@@ -34,3 +46,48 @@ TouchCap wakeup
         Touch Press Event
             page orign.val
         
+TouchCap swipe
+    Attributes
+        ID   : 3
+        Scope: local
+        Value: 0
+    
+    Events
+        Touch Press Event
+            swipestore.en=1 // Start swipestore timer
+        
+        Touch Release Event
+            swipestore.en=0
+            // Touch has ended, x
+            if(tch0==0)
+            {
+                swipec=swipex-tch2
+                // From Left to Right
+                if(swipec>swipedx&&api==1)
+                {
+                    page buttonpage04
+                }
+                // Right to Left
+                swipec2=0-swipedx
+                if(swipec<swipec2&&api==1)
+                {
+                    page buttonpage01
+                }
+            }
+            // Touch has ended, y
+            if(tch1==0)
+            {
+                swipec=swipey-tch3
+                // From Up to Down
+                if(swipec>100&&api==1)
+                {
+                    page buttonpage02
+                }
+                // Down to Up
+                swipec2=0-swipedy
+                if(swipec<-100&&api==1)
+                {
+                    page buttonpage03
+                }
+            }
+