def __init__(self, x=0, y=0, w=10, h=10):
super(UserInterfaceItem, self).__init__()
self.max_children = 0 # Used in ordered group
self.rectangle = AABox(x, y, w, h)
self.uigroup = TranslationGroup(self)
self.batch = None
self.vertex_list = None
self.layout = Layout(self)
class UserInterfaceItem(GroupItem, MouseItem, metaclass=DerivedClassRegistery):
'''
All aspects of a user interface must inherit from the
UserInterfaceBase class. It handles grouping of UserInterface
items, as well as their events and displays.
'''
def __init__(self, x=0, y=0, w=10, h=10):
super(UserInterfaceItem, self).__init__()
self.max_children = 0 # Used in ordered group
self.rectangle = AABox(x, y, w, h)
self.uigroup = TranslationGroup(self)
self.batch = None
self.vertex_list = None
self.layout = Layout(self)
# PROPERTIES
@property
def position(self):
return self.rectangle.position
@position.setter
def position(self, other):
self.rectangle.position = other
self.on_resize()
@property
def size(self):
return self.rectangle.size
@size.setter
def size(self, other):
self.rectangle.size = other
self.on_resize()
@property
def absolute_position(self):
'''
Sometimes, calculations must be done based on the absolute
location of a rectangle, instead of the relative location
used internally for rendering. This calculates it recursively.
return - Vector giving the absolute position of the rectangle
'''
if self.parent:
return self.parent.absolute_position + self.position
else:
return self.position
# Mouse Propagation
def register_mouse_pressed(self, *params):
self.recursive_child_operation('on_mouse_pressed', *params)
def register_mouse_release(self, *params):
self.recursive_child_operation('on_mouse_released', *params)
def register_mouse_move(self, *params):
self.recursive_child_operation('on_mouse_move', *params)
def get_batch(self):
'''
Recursively looks up the parent tree until
a parent has a batch. It is assumed that the
UserInterfaceRoot is the root of the tree.
'''
return self.root_parent.batch
def set_vertex_list(self):
'''
Called at the end of creation of the UserInterface item.
Use the get_batch method to grab the patch to attach
the vertex_list to.
'''
if self.vertex_list:
self.vertex_list.delete()
self.fill_vertex_list(self.get_batch())
def on_added_as_child(self):
'''
This method is required in order to establish the appropriate pyglet
groups in the appropriate order.
This does not safegaurd against children loops
Creates an OrderedGroup for the child, then sets that as the parent for
the child's uigroup.
'''
order = pyglet.graphics.OrderedGroup(
self.parent.max_children,
parent=self.parent.uigroup
)
self.parent.max_children += 1
self.uigroup.parent = order
self.set_vertex_list()
def on_inflate_complete(self, creator, window):
'''
When inflating from an XML window, it is sometimes necessary, such as
when inflating a Root item, that more information is necessary than can
be relayed through the default constructor. This method is called after
the inflation process is complete.
'''
self.layout.apply()
def get_item_by_name(self, name):
if 'name' in self.__dict__ and self.name == name:
return self
for child in self.children:
item = child.get_item_by_name(name)
if item is not None:
return item
else: # If no children have an item by that name
return None
def register_window_change(self, window):
self.recursive_child_operation('on_window_resize', window)
def on_window_resize(self, window):
self.layout.apply()
# DUMMY METHODS FOR OVERRIDING
def fill_vertex_list(self, batch):
pass
def on_resize(self):
pass
