218 lines
8.5 KiB
Python
218 lines
8.5 KiB
Python
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import bpy
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import lnx.utils
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import lnx.node_utils
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from lnx.logicnode.lnx_nodes import *
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import lnx.logicnode.miscellaneous.LN_call_group as LN_call_group
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class GroupOutputsNode(LnxLogicTreeNode):
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"""Output for a node group."""
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bl_idname = 'LNGroupOutputsNode'
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bl_label = 'Group Output Node'
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lnx_section = 'group'
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lnx_version = 3
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def __init__(self):
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self.register_id()
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# Active socket selected
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active_input: IntProperty(name='active_input', description='', default=0)
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# Flag to store invalid links
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invalid_link: BoolProperty(name='invalid_link', description='', default=False)
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# Override copy prevention in certain situations such as copying entire group
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copy_override: BoolProperty(name='copy override', description='', default=False)
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def init(self, context):
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tree = bpy.context.space_data.edit_tree
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node_count = 0
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for node in tree.nodes:
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if node.bl_idname == 'LNGroupOutputsNode':
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node_count += 1
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if node_count > 1:
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lnx.log.warn("Only one group output node per node tree is allowed")
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self.mute = True
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else:
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super().init(context)
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# Prevent copying of group node
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def copy(self, node):
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if not self.copy_override:
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self.mute = True
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self.inputs.clear()
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self.copy_override = False
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def lnx_init(self, context):
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if not self.mute:
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self.add_socket()
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# Called when link is created
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def insert_link(self, link):
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to_socket = link.to_socket
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from_node = link.from_node
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from_socket = None
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# Recursively search for other socket in case of reroutes
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if from_node.type == 'REROUTE':
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_, from_socket = lnx.node_utils.input_get_connected_node(to_socket)
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else:
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from_socket = link.from_socket
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if from_socket is not None:
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index = self.get_socket_index(to_socket)
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# If socket connected to LnxAnySocket, link is invalid
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if from_socket.bl_idname == 'LnxAnySocket':
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self.invalid_link = True
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else:
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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# Change socket type according to the new link
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node.change_output_socket(from_socket.bl_idname, index, link.to_socket.display_label)
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# Use update method to remove invalid links
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def update(self):
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super().update()
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if self.invalid_link:
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self.remove_invalid_links()
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# Called when name of the socket is changed
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def socket_name_update(self, socket):
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index = self.get_socket_index(socket)
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# Update socket names of the related call group nodes
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call_node_groups = self.get_call_group_nodes()
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for node in call_node_groups:
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out_socket = node.outputs[index]
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if out_socket.bl_idname == 'LnxAnySocket':
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out_socket.display_label = socket.display_label
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else:
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out_socket.name = socket.display_label
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# Recursively search and remove invalid links
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def remove_invalid_links(self):
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for input in self.inputs:
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for link in input.links:
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if link.from_socket.bl_idname == 'LnxAnySocket':
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tree = self.get_tree()
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tree.links.remove(link)
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break
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self.invalid_link = False
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# Function to move socket up and handle the same in related call group nodes
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def move_socket_up(self):
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if self.active_input > 0:
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self.inputs.move(self.active_input, self.active_input - 1)
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call_node_groups = self.get_call_group_nodes()
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for nodes in call_node_groups:
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nodes.outputs.move(self.active_input, self.active_input - 1)
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self.active_input = self.active_input - 1
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# Function to move socket down and handle the same in related call group nodes
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def move_socket_down(self):
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if self.active_input < len(self.inputs) - 1:
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self.inputs.move(self.active_input, self.active_input + 1)
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call_node_groups = self.get_call_group_nodes()
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for nodes in call_node_groups:
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nodes.outputs.move(self.active_input, self.active_input + 1)
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self.active_input = self.active_input + 1
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# Function to recursively get related call group nodes
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def get_call_group_nodes(self):
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call_group_nodes = []
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# Return empty list if node is muted
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if self.mute:
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return call_group_nodes
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for tree in bpy.data.node_groups:
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if tree.bl_idname == "LnxLogicTreeType" or tree.bl_idname == "LnxGroupTree":
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for node in tree.nodes:
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if node.bl_idname == 'LNCallGroupNode':
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if node.group_tree == self.get_tree():
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call_group_nodes.append(node)
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return call_group_nodes
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# Function to add a socket and handle the same in the related call group nodes
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def add_socket(self):
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self.add_input('LnxAnySocket','',)
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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node.add_output('LnxAnySocket','')
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# Function to remove a socket and handle the same in the related call group nodes
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def remove_socket(self):
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self.inputs.remove(self.inputs[-1])
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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node.outputs.remove(node.outputs[-1])
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if self.active_input > len(self.inputs) - 1:
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self.active_input = self.active_input - 1
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# Function to add a socket at certain index and
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# handle the same in the related call group nodes
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def add_socket_ext(self):
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index = self.active_input + 1
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self.insert_input('LnxAnySocket', index, '')
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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node.insert_output('LnxAnySocket', index, '')
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# Function to remove a socket at certain index and
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# handle the same in the related call group nodes
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def remove_socket_ext(self):
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self.inputs.remove(self.inputs[self.active_input])
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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node.outputs.remove(node.outputs[self.active_input])
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if self.active_input > len(self.inputs) - 1:
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self.active_input = len(self.inputs) - 1
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# Handle deletion of group input node
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def free(self):
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call_group_nodes = self.get_call_group_nodes()
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for node in call_group_nodes:
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node.outputs.clear()
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# Draw node UI
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def draw_buttons(self, context, layout):
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if self.mute:
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layout.enabled = False
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row = layout.row(align=True)
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op = row.operator('lnx.node_call_func', text='New', icon='PLUS', emboss=True)
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op.node_index = self.get_id_str()
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op.callback_name = 'add_socket'
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if len(self.inputs) > 1:
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op2 = row.operator('lnx.node_call_func', text='', icon='X', emboss=True)
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op2.node_index = self.get_id_str()
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op2.callback_name = 'remove_socket'
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# Draw side panel UI
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def draw_buttons_ext(self, context, layout):
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if self.mute:
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layout.enabled = False
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node = context.active_node
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split = layout.row()
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split.template_list('LNX_UL_InterfaceSockets', 'IN', node, 'inputs', node, 'active_input')
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ops_col = split.column()
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add_remove_col = ops_col.column(align=True)
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props = add_remove_col.operator('lnx.node_call_func', icon='ADD', text="")
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props.node_index = self.get_id_str()
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props.callback_name = 'add_socket_ext'
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if len(self.inputs) > 1:
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props = add_remove_col.operator('lnx.node_call_func', icon='REMOVE', text="")
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props.node_index = self.get_id_str()
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props.callback_name = 'remove_socket_ext'
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ops_col.separator()
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up_down_col = ops_col.column(align=True)
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props = up_down_col.operator('lnx.node_call_func', icon='TRIA_UP', text="")
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props.node_index = self.get_id_str()
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props.callback_name = 'move_socket_up'
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props = up_down_col.operator('lnx.node_call_func', icon='TRIA_DOWN', text="")
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props.node_index = self.get_id_str()
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props.callback_name = 'move_socket_down'
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def get_replacement_node(self, node_tree: bpy.types.NodeTree):
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if self.lnx_version not in (0, 1, 2):
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raise LookupError()
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return node_tree.nodes.new('LNGroupOutputsNode')
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