chore(style): remove the trailing space from all source files (#3188)

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

examples/scroll/index.rst

@@ -1,5 +1,5 @@
 
-Nested scrolling 
+Nested scrolling
 """"""""""""""""
 
 .. lv_example:: scroll/lv_example_scroll_1
@@ -19,15 +19,15 @@ Styling the scrollbars
 """"""""""""""""""""""""
 .. lv_example:: scroll/lv_example_scroll_4
   :language: c
-  
+
 Right to left scrolling
 """"""""""""""""""""""""
 .. lv_example:: scroll/lv_example_scroll_5
   :language: c
-  
+
 Translate on scroll
 """"""""""""""""""""""""
 .. lv_example:: scroll/lv_example_scroll_6
   :language: c
-  
-  
+
+

examples/scroll/lv_example_scroll_2.py

@@ -21,7 +21,7 @@ panel.set_scroll_snap_x(lv.SCROLL_SNAP.CENTER)
 panel.set_flex_flow(lv.FLEX_FLOW.ROW)
 panel.center()
 
-for i in range(10): 
+for i in range(10):
     btn = lv.btn(panel)
     btn.set_size(150, 100)
 

examples/scroll/lv_example_scroll_3.py

@@ -20,7 +20,7 @@ class ScrollExample_3():
         float_btn.set_style_radius(lv.RADIUS.CIRCLE, 0)
         float_btn.set_style_bg_img_src(lv.SYMBOL.PLUS, 0)
         float_btn.set_style_text_font(lv.theme_get_font_large(float_btn), 0)
-            
+
     def float_btn_event_cb(self,e,list):
         code = e.get_code()
         float_btn = e.get_target()
@@ -32,7 +32,7 @@ class ScrollExample_3():
             float_btn.move_foreground()
 
             list_btn.scroll_to_view(lv.ANIM.ON)
-            
+
 scroll_example_3 = ScrollExample_3()
 
 

examples/scroll/lv_example_scroll_6.py

@@ -7,7 +7,7 @@ def scroll_event_cb(e):
     cont_y_center = cont_a.y1 + cont_a.get_height() // 2
 
     r = cont.get_height() * 7 // 10
-    
+
     child_cnt = cont.get_child_cnt()
     for i in range(child_cnt):
         child = cont.get_child(i)
@@ -20,7 +20,7 @@ def scroll_event_cb(e):
         diff_y = abs(diff_y)
 
         # Get the x of diff_y on a circle.
-        
+
         # If diff_y is out of the circle use the last point of the circle (the radius)
         if diff_y >= r:
             x = r
@@ -56,7 +56,7 @@ cont.set_scrollbar_mode(lv.SCROLLBAR_MODE.OFF)
 for i in range(20):
     btn = lv.btn(cont)
     btn.set_width(lv.pct(100))
-    
+
     label = lv.label(btn)
     label.set_text("Button " + str(i))