class AutoShow(object):
"""
Auto-show and hide Onboard.
"""
# Delay from the last focus event until the keyboard is shown/hidden.
# Raise it to reduce unnecessary transitions (flickering).
# Lower it for more immediate reactions.
SHOW_REACTION_TIME = 0.0
HIDE_REACTION_TIME = 0.3
_keyboard = None
_lock_visible = False
_locks = None
_atspi_state_tracker = None
_hw_sensor_tracker = None
_udev_tracker = None
def __init__(self, keyboard):
self._keyboard = keyboard
self._auto_show_timer = TimerOnce()
self._active_accessible = None
self._locks = collections.OrderedDict()
def reset(self):
self._auto_show_timer.stop()
self.unlock_all()
def cleanup(self):
self.reset()
self.enable(False) # disconnect events
def update(self):
self.enable_(config.is_auto_show_enabled())
def enable(self, enable):
if enable:
if not self._atspi_state_tracker:
self._atspi_state_tracker = AtspiStateTracker()
self._atspi_state_tracker.connect(
"text-entry-activated", self._on_text_entry_activated)
self._atspi_state_tracker.connect("text-caret-moved",
self._on_text_caret_moved)
else:
if self._atspi_state_tracker:
self._atspi_state_tracker.disconnect(
"text-entry-activated", self._on_text_entry_activated)
self._atspi_state_tracker.disconnect("text-caret-moved",
self._on_text_caret_moved)
self._atspi_state_tracker = None
self._active_accessible = None # stop using _atspi_state_tracker
if enable:
self._lock_visible = False
self._locks.clear()
self.enable_tablet_mode_detection(
enable and config.is_tablet_mode_detection_enabled())
self.enable_keyboard_device_detection(
enable and config.is_keyboard_device_detection_enabled())
def enable_tablet_mode_detection(self, enable):
if enable:
if not self._hw_sensor_tracker:
self._hw_sensor_tracker = HardwareSensorTracker()
self._hw_sensor_tracker.connect("tablet-mode-changed",
self._on_tablet_mode_changed)
# Run/stop GlobalKeyListener when tablet-mode-enter-key or
# tablet-mode-leave-key change.
self._hw_sensor_tracker.update_sensor_sources()
else:
if self._hw_sensor_tracker:
self._hw_sensor_tracker.disconnect(
"tablet-mode-changed", self._on_tablet_mode_changed)
self._hw_sensor_tracker = None
_logger.debug("enable_tablet_mode_detection {} {}".format(
enable, self._hw_sensor_tracker))
def enable_keyboard_device_detection(self, enable):
"""
Detect if physical keyboard devices are present in the system.
When detected, auto-show is locked.
"""
if enable:
if not self._udev_tracker:
self._udev_tracker = UDevTracker()
self._udev_tracker.connect(
"keyboard-detection-changed",
self._on_keyboard_device_detection_changed)
else:
if self._udev_tracker:
self._udev_tracker.disconnect(
"keyboard-detection-changed",
self._on_keyboard_device_detection_changed)
self._udev_tracker = None
_logger.debug("enable_keyboard_device_detection {} {}".format(
enable, self._udev_tracker))
def lock(self, reason, duration, lock_show, lock_hide):
"""
Lock showing and/or hiding the keyboard window.
There is a separate, independent lock for each unique "reason".
If duration is specified, automatically unlock after these number of
seconds.
"""
class AutoShowLock:
timer = None
lock_show = True
lock_hide = True
visibility_change = None
# Discard pending hide/show actions.
self._auto_show_timer.stop()
lock = self._locks.setdefault(reason, AutoShowLock())
if lock.timer:
lock.timer.stop()
if duration is None:
lock.timer = None
else:
lock.timer = TimerOnce()
lock.timer.start(duration, self._on_lock_timer, reason)
lock.lock_show = lock_show
lock.lock_hide = lock_hide
_logger.debug("lock({}): {}".format(repr(reason),
list(self._locks.keys())))
def unlock(self, reason):
"""
Remove a specific lock named by "reason".
Returns the change in visibility that occurred while this lock was
active. None for no change.
"""
result = None
lock = self._locks.get(reason)
if lock:
result = lock.visibility_change
if lock.timer:
lock.timer.stop()
del self._locks[reason]
_logger.debug("unlock({}) {}".format(repr(reason),
list(self._locks.keys())))
return result
def unlock_all(self):
"""
Remove all locks.
"""
for lock in self._locks.values():
if lock.timer:
lock.timer.stop()
self._locks.clear()
def _on_lock_timer(self, reason):
self.unlock(reason)
return False
def is_locked(self, reason):
return reason in self._locks
def is_show_locked(self):
for lock in self._locks.values():
if lock.lock_show:
return True
return False
def is_hide_locked(self):
for lock in self._locks.values():
if lock.lock_hide:
return True
return False
def lock_visible(self, lock, thaw_time=1.0):
"""
Lock window permanently visible in response to the user showing it.
Optionally freeze hiding/showing for a limited time.
"""
_logger.debug("lock_visible{} ".format((lock, thaw_time)))
# Permanently lock visible.
self._lock_visible = lock
# Temporarily stop showing/hiding.
if thaw_time:
self.lock("lock_visible", thaw_time, True, False)
# Leave the window in its current state,
# discard pending hide/show actions.
self._auto_show_timer.stop()
# Stop pending auto-repositioning
if lock:
self._keyboard.stop_auto_positioning()
def is_text_entry_active(self):
return bool(self._active_accessible)
def can_hide_keyboard(self):
if _logger.isEnabledFor(logging.INFO):
msg = "locks={} " \
.format([reason for reason, lock in self._locks.items()
if lock.lock_hide])
_logger.info("can_hide_keyboard: " + msg)
return not self.is_hide_locked()
def can_show_keyboard(self):
result = True
msg = ""
if _logger.isEnabledFor(logging.INFO):
msg += "locks={} " \
.format([reason for reason, lock in self._locks.items()
if lock.lock_show])
if self._locks:
result = False
else:
if config.is_tablet_mode_detection_enabled():
tablet_mode = self._hw_sensor_tracker.get_tablet_mode() \
if self._hw_sensor_tracker else None
msg += "tablet_mode={} ".format(tablet_mode)
result = result and \
tablet_mode is not False # can be True, False or None
if config.is_keyboard_device_detection_enabled():
detected = self._udev_tracker.is_keyboard_device_detected() \
if self._udev_tracker else None
msg += "keyboard_device_detected={} ".format(detected)
result = result and \
detected is not True # can be True, False or None
_logger.info("can_show_keyboard: " + msg)
return result
def _on_text_caret_moved(self, event):
"""
Show the keyboard on click of an already focused text entry
(LP: 1078602). Do this only for single line text entries to
still allow clicking longer documents without having onboard show up.
"""
if config.auto_show.enabled and \
not self._keyboard.is_visible():
accessible = self._active_accessible
if accessible:
if accessible.is_single_line():
self._on_text_entry_activated(accessible)
def _on_text_entry_activated(self, accessible):
self._active_accessible = accessible
active = bool(accessible)
self.request_keyboard_visible(active)
def _on_tablet_mode_changed(self, active):
self._handle_tablet_mode_changed(active)
def _on_keyboard_device_detection_changed(self, detected):
self._handle_tablet_mode_changed(not detected)
def _handle_tablet_mode_changed(self, tablet_mode_active):
if tablet_mode_active:
show = self.is_text_entry_active()
else:
# hide keyboard even if it was locked visible
self.lock_visible(False, thaw_time=0)
show = False
self.request_keyboard_visible(show)
def request_keyboard_visible(self, visible, delay=None):
# Remember request per lock. That way we know the time span in
# which the visibility change occurred.
for lock in self._locks.values():
lock.visibility_change = visible
# Always allow to show the window even when locked.
# Mitigates right click on unity-2d launcher hiding
# onboard before _lock_visible is set (Precise).
if self._lock_visible:
visible = True
can_hide = self.can_hide_keyboard()
can_show = self.can_show_keyboard()
_logger.debug("request_keyboard_visible({}): lock_visible={} "
"can_hide={} can_show={}".format(visible,
self._lock_visible,
can_hide, can_show))
if visible is False and can_hide or \
visible is True and can_show:
self.show_keyboard(visible, delay)
# The active accessible changed, stop trying to
# track the position of the previous one.
# -> less erratic movement during quick focus changes
self._keyboard.stop_auto_positioning()
def show_keyboard(self, show, delay=None):
""" Begin AUTO_SHOW or AUTO_HIDE transition """
if delay is None:
# Don't act on each and every focus message. Delay the start
# of the transition slightly so that only the last of a bunch of
# focus messages is acted on.
delay = (self.SHOW_REACTION_TIME
if show else self.HIDE_REACTION_TIME)
if delay == 0:
self._auto_show_timer.stop()
self._begin_transition(show)
else:
self._auto_show_timer.start(delay, self._begin_transition, show)
def _begin_transition(self, show):
self._keyboard.transition_visible_to(show)
if show:
self._keyboard.auto_position()
self._keyboard.commit_transition()
return False
def get_repositioned_window_rect(self,
view,
home,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
"""
Get the alternative window rect suggested by auto-show or None if
no repositioning is required.
"""
accessible = self._active_accessible
if not accessible:
return None
accessible.invalidate_extents()
acc_rect = accessible.get_extents()
if acc_rect.is_empty() or \
self._lock_visible:
return None
method = config.get_auto_show_reposition_method()
x = None
y = None
# The home_rect doesn't include window decoration,
# make sure to add decoration for correct clearance.
rh = home.copy()
window = view.get_kbd_window()
if window:
offset = window.get_client_offset()
rh.w += offset[0]
rh.h += offset[1]
# "Follow active window" method
if method == RepositionMethodEnum.REDUCE_POINTER_TRAVEL:
frame = accessible.get_frame()
app_rect = frame.get_extents() \
if frame else Rect()
x, y = self._find_close_position(view, rh, app_rect, acc_rect,
limit_rects, test_clearance,
move_clearance, horizontal,
vertical)
# "Only move when necessary" method
if method == RepositionMethodEnum.PREVENT_OCCLUSION:
x, y = self._find_non_occluding_position(view, rh, acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal, vertical)
if not x is None:
return Rect(x, y, home.w, home.h)
else:
return None
def _find_close_position(self,
view,
home,
app_rect,
acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
rh = home
# Closer clearance for toplevels. There's usually nothing
# that can be obscured.
move_clearance_frame = Rect(10, 10, 10, 10)
# Leave a different clearance for the new, yet to be found, positions.
ra = acc_rect.apply_border(*move_clearance)
if not app_rect.is_empty():
rp = app_rect.apply_border(*move_clearance_frame)
# candidate positions
vp = []
if vertical:
xc = acc_rect.get_center()[0] - rh.w / 2
if app_rect.w > rh.w:
xc = max(xc, app_rect.left())
xc = min(xc, app_rect.right() - rh.w)
if not app_rect.is_empty():
# below window
vp.append([xc, rp.bottom(), app_rect])
# above window
vp.append([xc, rp.top() - rh.h, app_rect])
# inside maximized window, y at home.y
vp.append([xc, home.y, acc_rect])
# below text entry
vp.append([xc, ra.bottom(), acc_rect])
# above text entry
vp.append([xc, ra.top() - rh.h, acc_rect])
# limited, non-intersecting candidate rectangles
rresult = None
for p in vp:
pl = view.limit_position(p[0], p[1], view.canvas_rect, limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
ri = p[2]
rcs = [ri, acc_rect] # collision rects
if not any(r.intersects(rc) for rc in rcs):
rresult = r
break
if rresult is None:
# try again, this time horizontally and vertically
rhtmp = Rect(vp[0][0], vp[0][1], home.w, home.h)
return self._find_non_occluding_position(view, home, acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal, vertical)
else:
return rresult.get_position()
def _find_non_occluding_position(self,
view,
home,
acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
rh = home
# Leave some clearance around the accessible to account for
# window frames and position errors of firefox entries.
ra = acc_rect.apply_border(*test_clearance)
if rh.intersects(ra):
# Leave a different clearance for the new,
# yet to be found positions.
ra = acc_rect.apply_border(*move_clearance)
x, y = rh.get_position()
# candidate positions
vp = []
if horizontal:
vp.append([ra.left() - rh.w, y])
vp.append([ra.right(), y])
if vertical:
vp.append([x, ra.top() - rh.h])
vp.append([x, ra.bottom()])
# limited, non-intersecting candidate rectangles
vr = []
for p in vp:
pl = view.limit_position(p[0], p[1], view.canvas_rect,
limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
if not r.intersects(ra):
vr.append(r)
# candidate with smallest center-to-center distance wins
chx, chy = rh.get_center()
dmin = None
rmin = None
for r in vr:
cx, cy = r.get_center()
dx, dy = cx - chx, cy - chy
d2 = dx * dx + dy * dy
if dmin is None or dmin > d2:
dmin = d2
rmin = r
if not rmin is None:
return rmin.get_position()
return None, None
class AutoShow(object):
"""
Auto-show and hide Onboard.
"""
# Delay from the last focus event until the keyboard is shown/hidden.
# Raise it to reduce unnecessary transitions (flickering).
# Lower it for more immediate reactions.
SHOW_REACTION_TIME = 0.0
HIDE_REACTION_TIME = 0.3
_lock_visible = False
_frozen = False
_paused = False
_keyboard = None
_state_tracker = AtspiStateTracker()
def __init__(self, keyboard):
self._keyboard = keyboard
self._auto_show_timer = TimerOnce()
self._pause_timer = TimerOnce()
self._thaw_timer = TimerOnce()
self._active_accessible = None
def reset(self):
self._auto_show_timer.stop()
self._pause_timer.stop()
self._thaw_timer.stop()
self._frozen = False
self._paused = False
def cleanup(self):
self.reset()
self.enable(False) # disconnect atspi events
def enable(self, enable):
if enable:
self._state_tracker.connect("text-entry-activated",
self._on_text_entry_activated)
self._state_tracker.connect("text-caret-moved",
self._on_text_caret_moved)
else:
self._state_tracker.disconnect("text-entry-activated",
self._on_text_entry_activated)
self._state_tracker.disconnect("text-caret-moved",
self._on_text_caret_moved)
if enable:
self._lock_visible = False
self._frozen = False
def is_paused(self):
return self._paused
def pause(self, duration = None):
"""
Stop showing and hiding the keyboard window for longer time periods,
e.g. after pressing a key on a physical keyboard.
duration in seconds, None to pause forever.
"""
self._paused = True
self._pause_timer.stop()
if not duration is None:
self._pause_timer.start(duration, self.resume)
# Discard pending hide/show actions.
self._auto_show_timer.stop()
def resume(self):
"""
Allow hiding and showing the keyboard window again.
"""
self._pause_timer.stop()
self._paused = False
def is_frozen(self):
return self._frozen
def freeze(self, thaw_time = None):
"""
Disable showing and hiding the keyboard window for short periods,
e.g. to skip unexpected focus events.
thaw_time in seconds, None to freeze forever.
"""
self._frozen = True
self._thaw_timer.stop()
if not thaw_time is None:
self._thaw_timer.start(thaw_time, self._on_thaw)
# Discard pending hide/show actions.
self._auto_show_timer.stop()
def thaw(self, thaw_time = None):
"""
Allow hiding and showing the keyboard window again.
thaw_time in seconds, None to thaw immediately.
"""
self._thaw_timer.stop()
if thaw_time is None:
self._on_thaw()
else:
self._thaw_timer.start(thaw_time, self._on_thaw)
def _on_thaw(self):
self._thaw_timer.stop()
self._frozen = False
return False
def lock_visible(self, lock, thaw_time = 1.0):
"""
Lock window permanetly visible in response to the user showing it.
Optionally freeze hiding/showing for a limited time.
"""
# Permanently lock visible.
self._lock_visible = lock
# Temporarily stop showing/hiding.
if thaw_time:
self.freeze(thaw_time)
# Leave the window in its current state,
# discard pending hide/show actions.
self._auto_show_timer.stop()
# Stop pending auto-repositioning
if lock:
self._keyboard.stop_auto_positioning()
def _on_text_caret_moved(self, event):
"""
Show the keyboard on click of an already focused text entry
(LP: 1078602). Do this only for single line text entries to
still allow clicking longer documents without having onboard show up.
"""
if config.auto_show.enabled and \
not self._keyboard.is_visible():
accessible = self._active_accessible
if accessible:
if self._state_tracker.is_single_line():
self._on_text_entry_activated(accessible)
def _on_text_entry_activated(self, accessible):
self._active_accessible = accessible
active = bool(accessible)
# show/hide the keyboard window
if not active is None:
# Always allow to show the window even when locked.
# Mitigates right click on unity-2d launcher hiding
# onboard before _lock_visible is set (Precise).
if self._lock_visible:
active = True
if not self.is_paused() and \
not self.is_frozen():
self.show_keyboard(active)
# The active accessible changed, stop trying to
# track the position of the previous one.
# -> less erratic movement during quick focus changes
self._keyboard.stop_auto_positioning()
def show_keyboard(self, show):
""" Begin AUTO_SHOW or AUTO_HIDE transition """
# Don't act on each and every focus message. Delay the start
# of the transition slightly so that only the last of a bunch of
# focus messages is acted on.
delay = self.SHOW_REACTION_TIME if show else \
self.HIDE_REACTION_TIME
self._auto_show_timer.start(delay, self._begin_transition, show)
def _begin_transition(self, show):
self._keyboard.transition_visible_to(show)
if show:
self._keyboard.auto_position()
self._keyboard.commit_transition()
return False
def get_repositioned_window_rect(self, view, home, limit_rects,
test_clearance, move_clearance,
horizontal = True, vertical = True):
"""
Get the alternative window rect suggested by auto-show or None if
no repositioning is required.
"""
accessible = self._active_accessible
if not accessible:
return None
acc_rect = self._state_tracker.get_accessible_extents(accessible)
if acc_rect.is_empty() or \
self._lock_visible:
return None
method = config.get_auto_show_reposition_method()
x = None
y = None
# The home_rect doesn't include window decoration,
# make sure to add decoration for correct clearance.
rh = home.copy()
window = view.get_kbd_window()
if window:
offset = window.get_client_offset()
rh.w += offset[0]
rh.h += offset[1]
# "Follow active window" method
if method == RepositionMethodEnum.REDUCE_POINTER_TRAVEL:
frame = self._state_tracker.get_frame()
app_rect = self._state_tracker.get_accessible_extents(frame) \
if frame else Rect()
x, y = self._find_close_position(view, rh,
app_rect, acc_rect, limit_rects,
test_clearance, move_clearance,
horizontal, vertical)
# "Only move when necessary" method
if method == RepositionMethodEnum.PREVENT_OCCLUSION:
x, y = self._find_non_occluding_position(view, rh,
acc_rect, limit_rects,
test_clearance, move_clearance,
horizontal, vertical)
if not x is None:
return Rect(x, y, home.w, home.h)
else:
return None
def _find_close_position(self, view, home,
app_rect, acc_rect, limit_rects,
test_clearance, move_clearance,
horizontal = True, vertical = True):
rh = home
move_clearance = Rect(10, 10, 10, 10)
# Leave a different clearance for the new, yet to be found, positions.
ra = acc_rect.apply_border(*move_clearance)
rp = app_rect.apply_border(*move_clearance)
# candidate positions
vp = []
if vertical:
xc = acc_rect.get_center()[0] - rh.w / 2
if app_rect.w > rh.w:
xc = max(xc, app_rect.left())
xc = min(xc, app_rect.right() - rh.w)
# below window
vp.append([xc, rp.bottom(), app_rect])
# above window
vp.append([xc, rp.top() - rh.h, app_rect])
# inside maximized window, y at home.y
vp.append([xc, home.y, acc_rect])
# vp.append([xc, rp.bottom()-ymargin, app_rect.deflate(rh.h+move_clearance[3]+ymargin)])
# below text entry
vp.append([xc, ra.bottom(), acc_rect])
# above text entry
vp.append([xc, ra.top() - rh.h, acc_rect])
# limited, non-intersecting candidate rectangles
rresult = None
for p in vp:
pl = view.limit_position(p[0], p[1],
view.canvas_rect,
limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
ri = p[2]
rcs = [ri, acc_rect] # collision rects
if not any(r.intersects(rc) for rc in rcs):
rresult = r
break
if rresult is None:
# try again, this time horizontally and vertically
rhtmp = Rect(vp[0][0], vp[0][1], home.w, home.h)
return self._find_non_occluding_position(view, home,
acc_rect, limit_rects,
test_clearance, move_clearance,
horizontal, vertical)
else:
return rresult.get_position()
def _find_non_occluding_position(self, view, home,
acc_rect, limit_rects,
test_clearance, move_clearance,
horizontal = True, vertical = True):
rh = home
# Leave some clearance around the accessible to account for
# window frames and position errors of firefox entries.
ra = acc_rect.apply_border(*test_clearance)
if rh.intersects(ra):
# Leave a different clearance for the new, yet to be found, positions.
ra = acc_rect.apply_border(*move_clearance)
x, y = rh.get_position()
# candidate positions
vp = []
if horizontal:
vp.append([ra.left() - rh.w, y])
vp.append([ra.right(), y])
if vertical:
vp.append([x, ra.top() - rh.h])
vp.append([x, ra.bottom()])
# limited, non-intersecting candidate rectangles
vr = []
for p in vp:
pl = view.limit_position(p[0], p[1],
view.canvas_rect,
limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
if not r.intersects(ra):
vr.append(r)
# candidate with smallest center-to-center distance wins
chx, chy = rh.get_center()
dmin = None
rmin = None
for r in vr:
cx, cy = r.get_center()
dx, dy = cx - chx, cy - chy
d2 = dx * dx + dy * dy
if dmin is None or dmin > d2:
dmin = d2
rmin = r
if not rmin is None:
return rmin.get_position()
return None, None
class AutoShow(object):
"""
Auto-show and hide Onboard.
"""
# Delay from the last focus event until the keyboard is shown/hidden.
# Raise it to reduce unnecessary transitions (flickering).
# Lower it for more immediate reactions.
SHOW_REACTION_TIME = 0.0
HIDE_REACTION_TIME = 0.3
_lock_visible = False
_frozen = False
_paused = False
_keyboard = None
_state_tracker = AtspiStateTracker()
def __init__(self, keyboard):
self._keyboard = keyboard
self._auto_show_timer = TimerOnce()
self._pause_timer = TimerOnce()
self._thaw_timer = TimerOnce()
self._active_accessible = None
def reset(self):
self._auto_show_timer.stop()
self._pause_timer.stop()
self._thaw_timer.stop()
self._frozen = False
self._paused = False
def cleanup(self):
self.reset()
self.enable(False) # disconnect atspi events
def enable(self, enable):
if enable:
self._state_tracker.connect("text-entry-activated",
self._on_text_entry_activated)
self._state_tracker.connect("text-caret-moved",
self._on_text_caret_moved)
else:
self._state_tracker.disconnect("text-entry-activated",
self._on_text_entry_activated)
self._state_tracker.disconnect("text-caret-moved",
self._on_text_caret_moved)
if enable:
self._lock_visible = False
self._frozen = False
def is_paused(self):
return self._paused
def pause(self, duration=None):
"""
Stop showing and hiding the keyboard window for longer time periods,
e.g. after pressing a key on a physical keyboard.
duration in seconds, None to pause forever.
"""
self._paused = True
self._pause_timer.stop()
if not duration is None:
self._pause_timer.start(duration, self.resume)
# Discard pending hide/show actions.
self._auto_show_timer.stop()
def resume(self):
"""
Allow hiding and showing the keyboard window again.
"""
self._pause_timer.stop()
self._paused = False
def is_frozen(self):
return self._frozen
def freeze(self, thaw_time=None):
"""
Disable showing and hiding the keyboard window for short periods,
e.g. to skip unexpected focus events.
thaw_time in seconds, None to freeze forever.
"""
self._frozen = True
self._thaw_timer.stop()
if not thaw_time is None:
self._thaw_timer.start(thaw_time, self._on_thaw)
# Discard pending hide/show actions.
self._auto_show_timer.stop()
def thaw(self, thaw_time=None):
"""
Allow hiding and showing the keyboard window again.
thaw_time in seconds, None to thaw immediately.
"""
self._thaw_timer.stop()
if thaw_time is None:
self._on_thaw()
else:
self._thaw_timer.start(thaw_time, self._on_thaw)
def _on_thaw(self):
self._thaw_timer.stop()
self._frozen = False
return False
def lock_visible(self, lock, thaw_time=1.0):
"""
Lock window permanetly visible in response to the user showing it.
Optionally freeze hiding/showing for a limited time.
"""
# Permanently lock visible.
self._lock_visible = lock
# Temporarily stop showing/hiding.
if thaw_time:
self.freeze(thaw_time)
# Leave the window in its current state,
# discard pending hide/show actions.
self._auto_show_timer.stop()
# Stop pending auto-repositioning
if lock:
self._keyboard.stop_auto_positioning()
def _on_text_caret_moved(self, event):
"""
Show the keyboard on click of an already focused text entry
(LP: 1078602). Do this only for single line text entries to
still allow clicking longer documents without having onboard show up.
"""
if config.auto_show.enabled and \
not self._keyboard.is_visible():
accessible = self._active_accessible
if accessible:
if self._state_tracker.is_single_line():
self._on_text_entry_activated(accessible)
def _on_text_entry_activated(self, accessible):
self._active_accessible = accessible
active = bool(accessible)
# show/hide the keyboard window
if not active is None:
# Always allow to show the window even when locked.
# Mitigates right click on unity-2d launcher hiding
# onboard before _lock_visible is set (Precise).
if self._lock_visible:
active = True
if not self.is_paused() and \
not self.is_frozen():
self.show_keyboard(active)
# The active accessible changed, stop trying to
# track the position of the previous one.
# -> less erratic movement during quick focus changes
self._keyboard.stop_auto_positioning()
def show_keyboard(self, show):
""" Begin AUTO_SHOW or AUTO_HIDE transition """
# Don't act on each and every focus message. Delay the start
# of the transition slightly so that only the last of a bunch of
# focus messages is acted on.
delay = self.SHOW_REACTION_TIME if show else \
self.HIDE_REACTION_TIME
self._auto_show_timer.start(delay, self._begin_transition, show)
def _begin_transition(self, show):
self._keyboard.transition_visible_to(show)
if show:
self._keyboard.auto_position()
self._keyboard.commit_transition()
return False
def get_repositioned_window_rect(self,
view,
home,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
"""
Get the alternative window rect suggested by auto-show or None if
no repositioning is required.
"""
accessible = self._active_accessible
if not accessible:
return None
acc_rect = self._state_tracker.get_accessible_extents(accessible)
if acc_rect.is_empty() or \
self._lock_visible:
return None
method = config.get_auto_show_reposition_method()
x = None
y = None
# The home_rect doesn't include window decoration,
# make sure to add decoration for correct clearance.
rh = home.copy()
window = view.get_kbd_window()
if window:
offset = window.get_client_offset()
rh.w += offset[0]
rh.h += offset[1]
# "Follow active window" method
if method == RepositionMethodEnum.REDUCE_POINTER_TRAVEL:
frame = self._state_tracker.get_frame()
app_rect = self._state_tracker.get_accessible_extents(frame) \
if frame else Rect()
x, y = self._find_close_position(view, rh, app_rect, acc_rect,
limit_rects, test_clearance,
move_clearance, horizontal,
vertical)
# "Only move when necessary" method
if method == RepositionMethodEnum.PREVENT_OCCLUSION:
x, y = self._find_non_occluding_position(view, rh, acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal, vertical)
if not x is None:
return Rect(x, y, home.w, home.h)
else:
return None
def _find_close_position(self,
view,
home,
app_rect,
acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
rh = home
move_clearance = Rect(10, 10, 10, 10)
# Leave a different clearance for the new, yet to be found, positions.
ra = acc_rect.apply_border(*move_clearance)
rp = app_rect.apply_border(*move_clearance)
# candidate positions
vp = []
if vertical:
xc = acc_rect.get_center()[0] - rh.w / 2
if app_rect.w > rh.w:
xc = max(xc, app_rect.left())
xc = min(xc, app_rect.right() - rh.w)
# below window
vp.append([xc, rp.bottom(), app_rect])
# above window
vp.append([xc, rp.top() - rh.h, app_rect])
# inside maximized window, y at home.y
vp.append([xc, home.y, acc_rect])
# vp.append([xc, rp.bottom()-ymargin, app_rect.deflate(rh.h+move_clearance[3]+ymargin)])
# below text entry
vp.append([xc, ra.bottom(), acc_rect])
# above text entry
vp.append([xc, ra.top() - rh.h, acc_rect])
# limited, non-intersecting candidate rectangles
rresult = None
for p in vp:
pl = view.limit_position(p[0], p[1], view.canvas_rect, limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
ri = p[2]
rcs = [ri, acc_rect] # collision rects
if not any(r.intersects(rc) for rc in rcs):
rresult = r
break
if rresult is None:
# try again, this time horizontally and vertically
rhtmp = Rect(vp[0][0], vp[0][1], home.w, home.h)
return self._find_non_occluding_position(view, home, acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal, vertical)
else:
return rresult.get_position()
def _find_non_occluding_position(self,
view,
home,
acc_rect,
limit_rects,
test_clearance,
move_clearance,
horizontal=True,
vertical=True):
rh = home
# Leave some clearance around the accessible to account for
# window frames and position errors of firefox entries.
ra = acc_rect.apply_border(*test_clearance)
if rh.intersects(ra):
# Leave a different clearance for the new, yet to be found, positions.
ra = acc_rect.apply_border(*move_clearance)
x, y = rh.get_position()
# candidate positions
vp = []
if horizontal:
vp.append([ra.left() - rh.w, y])
vp.append([ra.right(), y])
if vertical:
vp.append([x, ra.top() - rh.h])
vp.append([x, ra.bottom()])
# limited, non-intersecting candidate rectangles
vr = []
for p in vp:
pl = view.limit_position(p[0], p[1], view.canvas_rect,
limit_rects)
r = Rect(pl[0], pl[1], rh.w, rh.h)
if not r.intersects(ra):
vr.append(r)
# candidate with smallest center-to-center distance wins
chx, chy = rh.get_center()
dmin = None
rmin = None
for r in vr:
cx, cy = r.get_center()
dx, dy = cx - chx, cy - chy
d2 = dx * dx + dy * dy
if dmin is None or dmin > d2:
dmin = d2
rmin = r
if not rmin is None:
return rmin.get_position()
return None, None