ui/curses: remove flickering

pqcli/ui/curses/widgets/base.py

@@ -22,7 +22,7 @@ class WindowWrapper(Widget):
         else:
             try:
                 self._win = parent.derwin(h, w, y, x)
-                self._win.refresh()
+                self._win.noutrefresh()
             except curses.error:
                 self._win = None
 

pqcli/ui/curses/widgets/label.py

@@ -7,4 +7,4 @@ class Label(WindowWrapper):
             return
         self._win.erase()
         self._win.addnstr(text, min(len(text), self.getmaxyx()[1] - 1))
-        self._win.refresh()
+        self._win.noutrefresh()

pqcli/ui/curses/widgets/progress_bar.py

@@ -16,4 +16,4 @@ class ProgressBar(WindowWrapper):
             self._win.chgat(0, 0, curses.A_REVERSE)
             if x < self.getmaxyx()[1]:
                 self._win.chgat(0, x, curses.A_NORMAL)
-        self._win.refresh()
+        self._win.noutrefresh()

pqcli/ui/curses/widgets/scrollable.py

@@ -54,15 +54,15 @@ class Scrollable(WindowWrapper):
                 win_y2 = int(y2 * h // len(self._items))
                 for win_y in range(win_y1, win_y2):
                     self._win.chgat(win_y, 0, curses.A_REVERSE)
-                self._win.refresh()
+                self._win.noutrefresh()
 
                 self._render_impl(h, w - 1)
-                self._pad.refresh(
+                self._pad.noutrefresh(
                     self._scroll_y, 0, y, x, y + h - 1, x + w - 2
                 )
             else:
                 self._render_impl(h, w)
-                self._pad.refresh(
+                self._pad.noutrefresh(
                     self._scroll_y, 0, y, x, y + h - 1, x + w - 1
                 )