class Paned(Container):
"""Base class for Paned Containers"""
position = None
inPaned = ''
maker = None
caption = ''
ratio = 0.5
last_balance_time = 0
last_balance_args = None
def __init__(self):
"""Class initialiser"""
self.terminator = Terminator()
self.maker = Factory()
Container.__init__(self)
self.signals.append({'name': 'resize-term',
'flags': GObject.SignalFlags.RUN_LAST,
'return_type': None,
'param_types': (GObject.TYPE_STRING,)})
# pylint: disable-msg=W0613
def split_axis(self, widget, vertical=True, cwd=None, sibling=None, widgetfirst=True):
"""Axis splitter for already Paned."""
order = None
dbg('SPLIT PANE FROM: %s of %s [%s]' % (widget.config_section, self.config_section, sibling))
profile = self.config.get_term_config(self.config_section, widget)
profile['caption'] = self.caption
self.remove(widget)
if vertical:
container = VPaned()
else:
container = HPaned()
self.get_toplevel().set_pos_by_ratio = True
if not sibling:
sibling = self.maker.make('terminal')
sibling.set_cwd(cwd)
sibling.apply_new(profile)
sibling.spawn_child()
if widget.group and self.config['split_to_group']:
sibling.set_group(None, widget.group)
container.caption = self.caption
sibling.caption = self.caption
widget.caption = self.caption
container.inPaned = True
sibling.inPaned = True
widget.inPaned = True
self.add(container)
self.show_all()
order = [widget, sibling]
if widgetfirst is False:
order.reverse()
for terminal in order:
container.add(terminal)
self.show_all()
sibling.grab_focus()
while Gtk.events_pending():
Gtk.main_iteration_do(False)
self.get_toplevel().set_pos_by_ratio = False
def add(self, widget, metadata=None):
"""Add a widget to the container"""
if len(self.children) == 0:
self.pack1(widget, False, True)
self.children.append(widget)
elif len(self.children) == 1:
if self.get_child1():
self.pack2(widget, False, True)
else:
self.pack1(widget, False, True)
self.children.append(widget)
else:
raise ValueError('Paned widgets can only have two children')
if self.maker.isinstance(widget, 'Terminal'):
top_window = self.get_toplevel()
signals = {'close-term': self.wrapcloseterm,
'split-horiz': self.split_horiz,
'split-vert': self.split_vert,
'title-change': self.propagate_title_change,
'resize-term': self.resizeterm,
'size-allocate': self.new_size,
'zoom': top_window.zoom,
'tab-change': top_window.tab_change,
'group-all': top_window.group_all,
'group-all-toggle': top_window.group_all_toggle,
'ungroup-all': top_window.ungroup_all,
'group-tab': top_window.group_tab,
'group-tab-toggle': top_window.group_tab_toggle,
'ungroup-tab': top_window.ungroup_tab,
'move-tab': top_window.move_tab,
'maximise': [top_window.zoom, False],
'tab-new': [top_window.tab_new, widget],
'navigate': top_window.navigate_terminal,
'rotate-cw': [top_window.rotate, True],
'rotate-ccw': [top_window.rotate, False]}
for signal in signals:
args = []
handler = signals[signal]
if isinstance(handler, list):
args = handler[1:]
handler = handler[0]
self.connect_child(widget, signal, handler, *args)
if metadata and \
metadata.has_key('had_focus') and \
metadata['had_focus'] == True:
widget.grab_focus()
elif isinstance(widget, Gtk.Paned):
try:
self.connect_child(widget, 'resize-term', self.resizeterm)
self.connect_child(widget, 'size-allocate', self.new_size)
except TypeError:
err('Paned::add: %s has no signal resize-term' % widget)
def on_button_press(self, widget, event):
"""Handle button presses on a Pane"""
if event.button == 1 and event.type == Gdk.EventType._2BUTTON_PRESS:
if event.get_state() & Gdk.ModifierType.MOD4_MASK == Gdk.ModifierType.MOD4_MASK:
recurse_up=True
else:
recurse_up=False
if event.get_state() & Gdk.ModifierType.SHIFT_MASK == Gdk.ModifierType.SHIFT_MASK:
recurse_down=True
else:
recurse_down=False
self.last_balance_time = time.time()
self.last_balance_args = (recurse_up, recurse_down)
return True
else:
return False
def on_button_release(self, widget, event):
"""Handle button presses on a Pane"""
if event.button == 1:
if self.last_balance_time > (time.time() - 1):
# Dumb loop still needed, or some terms get squished on a Super rebalance
for i in range(3):
while Gtk.events_pending():
Gtk.main_iteration_do(False)
self.do_redistribute(*self.last_balance_args)
return False
def set_autoresize(self, autoresize):
"""Must be called on the highest ancestor in one given orientation"""
"""TODO write some better doc :)"""
maker = Factory()
children = self.get_children()
self.child_set_property(children[0], 'resize', False)
self.child_set_property(children[1], 'resize', not autoresize)
for child in children:
if maker.type(child) == maker.type(self):
child.set_autoresize(autoresize)
def do_redistribute(self, recurse_up=False, recurse_down=False):
"""Evenly divide available space between sibling panes"""
maker = Factory()
#1 Find highest ancestor of the same type => ha
highest_ancestor = self
while type(highest_ancestor.get_parent()) == type(highest_ancestor):
highest_ancestor = highest_ancestor.get_parent()
highest_ancestor.set_autoresize(False)
# (1b) If Super modifier, redistribute higher sections too
if recurse_up:
grandfather=highest_ancestor.get_parent()
if maker.isinstance(grandfather, 'VPaned') or \
maker.isinstance(grandfather, 'HPaned') :
grandfather.do_redistribute(recurse_up, recurse_down)
highest_ancestor._do_redistribute(recurse_up, recurse_down)
GObject.idle_add(highest_ancestor.set_autoresize, True)
def _do_redistribute(self, recurse_up=False, recurse_down=False):
maker = Factory()
#2 Make a list of self + all children of same type
tree = [self, [], 0, None]
toproc = [tree]
number_splits = 1
while toproc:
curr = toproc.pop(0)
for child in curr[0].get_children():
if type(child) == type(curr[0]):
childset = [child, [], 0, curr]
curr[1].append(childset)
toproc.append(childset)
number_splits = number_splits+1
else:
curr[1].append([None,[], 1, None])
p = curr
while p:
p[2] = p[2] + 1
p = p[3]
# (1c) If Shift modifier, redistribute lower sections too
if recurse_down and \
(maker.isinstance(child, 'VPaned') or \
maker.isinstance(child, 'HPaned')):
child.do_redistribute(False, True)
#3 Get ancestor x/y => a, and handle size => hs
avail_pixels=self.get_length()
handle_size = self.get_handlesize()
#4 Math! eek (a - (n * hs)) / (n + 1) = single size => s
single_size = (avail_pixels - (number_splits * handle_size)) / (number_splits + 1)
arr_sizes = [single_size]*(number_splits+1)
for i in range(avail_pixels % (number_splits + 1)):
arr_sizes[i] = arr_sizes[i] + 1
#5 Descend down setting the handle position to s
# (Has to handle nesting properly)
toproc = [tree]
while toproc:
curr = toproc.pop(0)
for child in curr[1]:
toproc.append(child)
if curr[1].index(child) == 0:
curr[0].set_position((child[2]*single_size)+((child[2]-1)*handle_size))
def remove(self, widget):
"""Remove a widget from the container"""
Gtk.Paned.remove(self, widget)
self.disconnect_child(widget)
self.children.remove(widget)
return(True)
def get_children(self):
"""Return an ordered list of our children"""
children = []
children.append(self.get_child1())
children.append(self.get_child2())
return(children)
def get_child_metadata(self, widget):
"""Return metadata about a child"""
metadata = {}
metadata['had_focus'] = widget.has_focus()
def get_handlesize(self):
"""Why oh why, gtk3?"""
try:
value = GObject.Value(int)
self.style_get_property('handle-size', value)
return(value.get_int())
except:
return 0
def wrapcloseterm(self, widget):
"""A child terminal has closed, so this container must die"""
dbg('Paned::wrapcloseterm: Called on %s' % widget)
if self.closeterm(widget):
# At this point we only have one child, which is the surviving term
sibling = self.children[0]
first_term_sibling = sibling
cur_tabnum = None
focus_sibling = True
if self.get_toplevel().is_child_notebook():
notebook = self.get_toplevel().get_children()[0]
cur_tabnum = notebook.get_current_page()
tabnum = notebook.page_num_descendant(self)
nth_page = notebook.get_nth_page(tabnum)
exiting_term_was_last_active = (notebook.last_active_term[nth_page] == widget.uuid)
if exiting_term_was_last_active:
first_term_sibling = enumerate_descendants(self)[1][0]
notebook.set_last_active_term(first_term_sibling.uuid)
notebook.clean_last_active_term()
self.get_toplevel().last_active_term = None
if cur_tabnum != tabnum:
focus_sibling = False
elif self.get_toplevel().last_active_term != widget.uuid:
focus_sibling = False
self.remove(sibling)
metadata = None
parent = self.get_parent()
metadata = parent.get_child_metadata(self)
dbg('metadata obtained for %s: %s' % (self, metadata))
parent.remove(self)
self.cnxids.remove_all()
parent.add(sibling, metadata)
if cur_tabnum:
notebook.set_current_page(cur_tabnum)
if focus_sibling:
first_term_sibling.grab_focus()
elif not sibling.get_toplevel().is_child_notebook():
Terminator().find_terminal_by_uuid(sibling.get_toplevel().last_active_term.urn).grab_focus()
else:
dbg("Paned::wrapcloseterm: self.closeterm failed")
def hoover(self):
"""Check that we still have a reason to exist"""
if len(self.children) == 1:
dbg('Paned::hoover: We only have one child, die')
parent = self.get_parent()
child = self.children[0]
self.remove(child)
parent.replace(self, child)
del(self)
def resizeterm(self, widget, keyname):
"""Handle a keyboard event requesting a terminal resize"""
if keyname in ['up', 'down'] and isinstance(self, Gtk.VPaned):
# This is a key we can handle
position = self.get_position()
if self.maker.isinstance(widget, 'Terminal'):
fontheight = widget.vte.get_char_height()
else:
fontheight = 10
if keyname == 'up':
self.set_position(position - fontheight)
else:
self.set_position(position + fontheight)
self.terminator.layout_changed(self)
elif keyname in ['left', 'right'] and isinstance(self, Gtk.HPaned):
# This is a key we can handle
position = self.get_position()
if self.maker.isinstance(widget, 'Terminal'):
fontwidth = widget.vte.get_char_width()
else:
fontwidth = 10
if keyname == 'left':
self.set_position(position - fontwidth)
else:
self.set_position(position + fontwidth)
self.terminator.layout_changed(self)
else:
# This is not a key we can handle
self.emit('resize-term', keyname)
def set_caption(self, capt):
"""Parent notebook gave us a new caption, we fill config"""
if not capt:
capt = 'NC' # Paned must have
self.caption = capt
self.config.commit(self.config_section, 'caption', capt)
# do not descend in children, they must have our caption anyway
self.get_child1().grab_focus() # make focus to terminal
def create_layout(self, layout):
"""Apply layout configuration"""
if not self.config_section:
err('no config_section for %s of %s.' % (layout['type'], layout['parent']))
return
if not layout.has_key('children'):
err('layout specifies no children: %s' % layout)
return
children = layout['children']
if len(children) != 2: # Paned widgets can only have two children
err('incorrect number of children for Paned: %s' % layout)
return
if self.caption: # parent gave us one already
pass
elif layout.has_key('caption'):
self.caption = layout['caption']
else:
self.caption = 'NC' # Paned tree tab must have a caption
dbg('CREATE LAYOUT for %s:%s [%s] of %s.' % (layout['type'], self.config_section, self.caption, layout['parent']))
keys = []
keys = children.keys()
keys.sort()
num = 0
for child_key in keys:
child = children[child_key]
dbg('Making child of type: %s [%s]' % (child['type'], self.caption))
if child['type'] == 'Terminal':
pass
elif child['type'] == 'VPaned':
if num == 0:
terminal = self.get_child1()
else:
terminal = self.get_child2()
self.split_axis(terminal, True)
elif child['type'] == 'HPaned':
if num == 0:
terminal = self.get_child1()
else:
terminal = self.get_child2()
self.split_axis(terminal, False)
else:
err('unknown child type: %s' % child['type'])
num = num + 1
c0 = self.get_child1()
c0.inPaned = True
c0.caption = self.caption
c0.config_section = keys[0]
c0.create_layout(children[keys[0]])
c1 = self.get_child2()
c1.inPaned = True
c1.caption = self.caption
c1.config_section = keys[1]
c1.create_layout(children[keys[1]])
# Set the position with ratio. For some reason more reliable than by pos.
if layout.has_key('ratio'):
self.ratio = float(layout['ratio'])
self.set_position_by_ratio()
def grab_focus(self):
"""We don't want focus, we want a Terminal to have it"""
self.get_child1().grab_focus()
def rotate_recursive(self, parent, w, h, clockwise):
"""
Recursively rotate "self" into a new paned that'll have "w" x "h" size. Attach it to "parent".
As discussed in LP#1522542, we should build up the new layout (including the separator positions)
in a single step. We can't rely on Gtk+ computing the allocation sizes yet, so we have to do the
computation ourselves and carry the resulting paned sizes all the way down the widget tree.
"""
maker = Factory()
handle_size = self.get_handlesize()
if isinstance(self, HPaned):
container = VPaned()
reverse = not clockwise
else:
container = HPaned()
reverse = clockwise
container.ratio = self.ratio
children = self.get_children()
if reverse:
container.ratio = 1 - container.ratio
children.reverse()
if isinstance(self, HPaned):
w1 = w2 = w
h1 = pos = self.position_by_ratio(h, handle_size, container.ratio)
h2 = max(h - h1 - handle_size, 0)
else:
h1 = h2 = h
w1 = pos = self.position_by_ratio(w, handle_size, container.ratio)
w2 = max(w - w1 - handle_size, 0)
container.set_pos(pos)
parent.add(container)
if maker.isinstance(children[0], 'Terminal'):
children[0].get_parent().remove(children[0])
container.add(children[0])
else:
children[0].rotate_recursive(container, w1, h1, clockwise)
if maker.isinstance(children[1], 'Terminal'):
children[1].get_parent().remove(children[1])
container.add(children[1])
else:
children[1].rotate_recursive(container, w2, h2, clockwise)
self.terminator.layout_changed(self)
def new_size(self, widget, allocation):
if self.get_toplevel().set_pos_by_ratio:
self.set_position_by_ratio()
else:
self.set_position(self.get_position())
self.terminator.layout_changed(self)
def position_by_ratio(self, total_size, handle_size, ratio):
non_separator_size = max(total_size - handle_size, 0)
ratio = min(max(ratio, 0.0), 1.0)
return int(round(non_separator_size * ratio))
def ratio_by_position(self, total_size, handle_size, position):
non_separator_size = max(total_size - handle_size, 0)
if non_separator_size == 0:
return None
position = min(max(position, 0), non_separator_size)
return float(position) / float(non_separator_size)
def set_position_by_ratio(self):
# Fix for strange race condition where every so often get_length returns 1. (LP:1655027)
while self.terminator.doing_layout and self.get_length() == 1:
while Gtk.events_pending():
Gtk.main_iteration()
self.set_pos(self.position_by_ratio(self.get_length(), self.get_handlesize(), self.ratio))
self.terminator.layout_changed(self)
def set_position(self, pos):
newratio = self.ratio_by_position(self.get_length(), self.get_handlesize(), pos)
if newratio is not None:
self.ratio = newratio
self.set_pos(pos)
self.terminator.layout_changed(self)
