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pathbarcontainer.py
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pathbarcontainer.py
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from gi.repository import Gtk
from gi.repository import Pango
class PathBarContainer (Gtk.Container):
def __init__(self):
super(PathBarContainer, self).__init__()
self.set_has_window(False)
self._children = []
button = Gtk.Button()
label = Gtk.Label()
label.set_text("heya")
label.set_ellipsize(Pango.EllipsizeMode.MIDDLE)
label.set_max_width_chars(6)
button.add(label)
revealer = Gtk.Revealer()
revealer.add(button)
revealer.set_parent(self)
revealer.show_all()
revealer.set_reveal_child(True)
self._children.append(revealer)
button = Gtk.Button()
label = Gtk.Label()
label.set_text("heya 2")
label.set_ellipsize(Pango.EllipsizeMode.MIDDLE)
label.set_max_width_chars(6)
button.add(label)
revealer = Gtk.Revealer()
revealer.add(button)
revealer.set_parent(self)
revealer.show_all()
revealer.set_reveal_child(True)
self._children.append(revealer)
button = Gtk.Button()
label = Gtk.Label()
label.set_text("heya 2")
label.set_ellipsize(Pango.EllipsizeMode.MIDDLE)
label.set_max_width_chars(6)
button.add(label)
revealer = Gtk.Revealer()
revealer.add(button)
revealer.set_parent(self)
revealer.show_all()
revealer.set_reveal_child(True)
self._children.append(revealer)
def do_forall(self, include_internals, callback):
for child in self._children:
if include_internals:
callback(child)
def _update_children_visibility(self, allocation):
totalMinWidth = 0
allocateMoreChildren = True
childrenToAllocate = []
sizes = []
for child in self._children:
if not child.is_visible():
continue
minWidth, natWidth = child.get_preferred_width()
if totalMinWidth < allocation.width and allocateMoreChildren:
child.set_child_visible(True)
childrenToAllocate.append(child)
totalMinWidth += minWidth
requestedSize = Gtk.RequestedSize()
requestedSize.minimum_size = minWidth
requestedSize.natural_size = natWidth
sizes.append(requestedSize)
else:
child.set_child_visible(False)
allocateMoreChildren = False
return sizes, childrenToAllocate, totalMinWidth
def do_size_allocate(self, allocation):
self.set_allocation(allocation)
sizes, childrenToAllocate, totalMinWidth = self._update_children_visibility(allocation)
extraSpace = allocation.width - totalMinWidth
Gtk.distribute_natural_allocation(extraSpace, len(childrenToAllocate), sizes)
x = allocation.x
for i in range(len(childrenToAllocate)):
childAllocation = []
childAllocation.x = x
childAllocation.y = allocation.y
childAllocation.width = sizes[i].minimum_size
childAllocation.height = allocation.height
childrenToAllocate[i].size_allocate(childAllocation)
x += childAllocation.width