diff options
Diffstat (limited to 'ranger/gui/widgets/pager.py')
| -rw-r--r-- | ranger/gui/widgets/pager.py | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/ranger/gui/widgets/pager.py b/ranger/gui/widgets/pager.py index 85871431..ab6220db 100644 --- a/ranger/gui/widgets/pager.py +++ b/ranger/gui/widgets/pager.py @@ -8,6 +8,10 @@ from ranger.ext.move import move_between class Pager(Widget): source = None source_is_stream = False + + old_source = None + old_scroll_begin = 0 + old_startx = 0 def __init__(self, win, embedded=False): Widget.__init__(self, win) self.embedded = embedded @@ -27,20 +31,34 @@ class Pager(Widget): def open(self): self.scroll_begin = 0 self.startx = 0 + self.need_redraw = True def close(self): if self.source and self.source_is_stream: self.source.close() def draw(self): - line_gen = self._generate_lines( - starty=self.scroll_begin, startx=self.startx) - - for line, i in zip(line_gen, range(self.hei)): - try: - self.addstr(i, 0, line) - except TypeError: - pass + if self.old_source != self.source: + self.old_source = self.source + self.need_redraw = True + + if self.old_scroll_begin != self.scroll_begin or \ + self.old_startx != self.startx: + self.old_startx = self.startx + self.old_scroll_begin = self.scroll_begin + self.need_redraw = True + + if self.need_redraw: + self.win.erase() + line_gen = self._generate_lines( + starty=self.scroll_begin, startx=self.startx) + + for line, i in zip(line_gen, range(self.hei)): + try: + self.addstr(i, 0, line) + except TypeError: + pass + self.need_redraw = False def move(self, relative=0, absolute=None): i = self.scroll_begin |