[DeviceDrivers][USB Stack] code cleanup

components/drivers/usb/usbhost/class/umouse.c

@@ -15,11 +15,13 @@
 #include <rtthread.h>
 #include <drivers/usb_host.h>
 #include "hid.h"
+
 #ifdef RT_USING_RTGUI
 #include <rtgui/event.h>
 #include <rtgui/rtgui_server.h>
 #include "drv_lcd.h"
 #endif
+
 #if defined(RT_USBH_HID) && defined(RT_USBH_HID_MOUSE)
 static struct uprotocal mouse_protocal;
 
@@ -28,6 +30,7 @@ static struct uprotocal mouse_protocal;
 #define RKEY_PRESS 0x02
 #define MKEY_PRESS 0x04
 #define MOUSE_SCALING 0x02
+
 static rt_bool_t lkey_down=RT_FALSE;
 //static rt_bool_t rkey_down=RT_FALSE;
 //static rt_bool_t mkey_down=RT_FALSE;
@@ -55,17 +58,20 @@ static rt_err_t rt_usbh_hid_mouse_callback(void* arg)
             if(emouse.x>xoffset)
             {
                 emouse.x-=xoffset;
-               }else
+            }
+            else
             {
                 emouse.x=0;
             }
-           }else
+        }
+        else
         {
             xoffset=(hid->buffer[1])*MOUSE_SCALING;
             if((emouse.x+xoffset)<480)
             {
                 emouse.x+=xoffset;
-               }else
+            }
+            else
             {
                 emouse.x=480;
             }
@@ -80,17 +86,20 @@ static rt_err_t rt_usbh_hid_mouse_callback(void* arg)
             if(emouse.y>yoffset)
             {
                 emouse.y-=yoffset;
-               }else
+            }
+            else
             {
                 emouse.y=0;
             }
-           }else
+        }
+        else
         {
             yoffset=hid->buffer[2]*MOUSE_SCALING;
             if(emouse.y+yoffset<272)
             {
                 emouse.y+=yoffset;
-               }else
+            }
+            else
             {
                 emouse.y=272;
             }
@@ -102,13 +111,15 @@ static rt_err_t rt_usbh_hid_mouse_callback(void* arg)
     }
     if(hid->buffer[0]&LKEY_PRESS)
     {
-			 if(lkey_down==RT_FALSE){
+        if(lkey_down==RT_FALSE)
+        {
             // rt_kprintf("mouse left key press down\n");
             emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN);
             rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
             lkey_down=RT_TRUE;
         }
-      }else if(lkey_down==RT_TRUE)
+    }
+    else if(lkey_down==RT_TRUE)
     {
         // rt_kprintf("mouse left key press up\n");
         emouse.button = (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_UP);