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Fix flickering in Blinkenlights UI

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Do not call resizeterm(), unless is_term_resized() returns True. This
breaks the busy-loop where resizeterm() pushes a KEY_RESIZE onto the
FIFO causing the screen to be redrawn indefinitely (Issue #290).

Also, clear and refresh the main window after it has been resized. This
hopefully fixes the problem where Blinkenlights UI becomes unreadable
after terminal resize (Issue #160).

Closes #160: blinkenlights display is broken
Closes #290: ncurses flicker with blinkenlights UI
Bug-Debian: https://bugs.debian.org/671087
Bug-Debian: https://bugs.debian.org/809676
Signed-off-by: Ilias Tsitsimpis <i.tsitsimpis@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Ilias Tsitsimpis 2016-10-14 14:42:33 +03:00 committed by Nicolas Sebrecht
parent 5d705f26e2
commit 0a635bd236
1 changed files with 8 additions and 2 deletions
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10
offlineimap/ui/Curses.py
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@ -149,6 +149,7 @@ class CursesAccountFrame:
self.window = curses_win self.window = curses_win
self.acc_num = acc_num self.acc_num = acc_num
self.drawleadstr() self.drawleadstr()
self.ui.exec_locked(self.window.noutrefresh)
# Update the child ThreadFrames # Update the child ThreadFrames
for child in self.children: for child in self.children:
child.update(curses_win, self.location, 0) child.update(curses_win, self.location, 0)
@ -510,6 +511,7 @@ class Blinkenlights(UIBase, CursesUtil):
# received special KEY_RESIZE, resize terminal # received special KEY_RESIZE, resize terminal
if key == curses.KEY_RESIZE: if key == curses.KEY_RESIZE:
self.resizeterm() self.resizeterm()
return
if key < 1 or key > 255: if key < 1 or key > 255:
return return
@ -574,9 +576,12 @@ class Blinkenlights(UIBase, CursesUtil):
self.height, self.width = self.stdscr.getmaxyx() self.height, self.width = self.stdscr.getmaxyx()
self.logheight = self.height - len(self.accframes) - 1 self.logheight = self.height - len(self.accframes) - 1
if resize: if resize:
curses.resizeterm(self.height, self.width) if curses.is_term_resized(self.height, self.width):
curses.resizeterm(self.height, self.width)
self.bannerwin.resize(1, self.width) self.bannerwin.resize(1, self.width)
self.logwin.resize(self.logheight, self.width) self.logwin.resize(self.logheight, self.width)
self.stdscr.clear()
self.stdscr.noutrefresh()
else: else:
self.bannerwin = curses.newwin(1, self.width, 0, 0) self.bannerwin = curses.newwin(1, self.width, 0, 0)
self.logwin = curses.newwin(self.logheight, self.width, 1, 0) self.logwin = curses.newwin(self.logheight, self.width, 1, 0)
@ -621,8 +626,9 @@ class Blinkenlights(UIBase, CursesUtil):
else: else:
color = curses.A_NORMAL color = curses.A_NORMAL
self.logwin.move(0, 0) self.logwin.move(0, 0)
self.logwin.erase() self.logwin.clear()
self.logwin.bkgd(' ', color) self.logwin.bkgd(' ', color)
self.logwin.noutrefresh()
def getaccountframe(self, acc_name): def getaccountframe(self, acc_name):
"""Return an AccountFrame() corresponding to acc_name. """Return an AccountFrame() corresponding to acc_name.