forked from bartvdbraak/blender
286 lines
9.1 KiB
Python
286 lines
9.1 KiB
Python
# ##### BEGIN GPL LICENSE BLOCK #####
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software Foundation,
|
|
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
#
|
|
# ##### END GPL LICENSE BLOCK #####
|
|
|
|
# <pep8-80 compliant>
|
|
|
|
import bpy
|
|
import nodeitems_utils
|
|
from bpy.types import (Operator,
|
|
PropertyGroup,
|
|
)
|
|
from bpy.props import (BoolProperty,
|
|
CollectionProperty,
|
|
EnumProperty,
|
|
IntProperty,
|
|
StringProperty,
|
|
)
|
|
|
|
|
|
class NodeSetting(PropertyGroup):
|
|
value = StringProperty(
|
|
name="Value",
|
|
description="Python expression to be evaluated as the initial node setting",
|
|
default="",
|
|
)
|
|
|
|
|
|
# Base class for node 'Add' operators
|
|
class NodeAddOperator():
|
|
|
|
type = StringProperty(
|
|
name="Node Type",
|
|
description="Node type",
|
|
)
|
|
use_transform = BoolProperty(
|
|
name="Use Transform",
|
|
description="Start transform operator after inserting the node",
|
|
default=False,
|
|
)
|
|
settings = CollectionProperty(
|
|
name="Settings",
|
|
description="Settings to be applied on the newly created node",
|
|
type=NodeSetting,
|
|
options={'SKIP_SAVE'},
|
|
)
|
|
|
|
@staticmethod
|
|
def store_mouse_cursor(context, event):
|
|
space = context.space_data
|
|
v2d = context.region.view2d
|
|
tree = space.edit_tree
|
|
|
|
# convert mouse position to the View2D for later node placement
|
|
if context.region.type == 'WINDOW':
|
|
# XXX, temp fix for [#35920], still fails for (U.pixelsize != 1)
|
|
dpi_fac = context.user_preferences.system.dpi / 72.0
|
|
space.cursor_location = v2d.region_to_view(event.mouse_region_x,
|
|
event.mouse_region_y)
|
|
space.cursor_location /= dpi_fac
|
|
|
|
else:
|
|
space.cursor_location = tree.view_center
|
|
|
|
# XXX explicit node_type argument is usually not necessary, but required to make search operator work:
|
|
# add_search has to override the 'type' property since it's hardcoded in bpy_operator_wrap.c ...
|
|
def create_node(self, context, node_type=None):
|
|
space = context.space_data
|
|
tree = space.edit_tree
|
|
|
|
if node_type is None:
|
|
node_type = self.type
|
|
|
|
# select only the new node
|
|
for n in tree.nodes:
|
|
n.select = False
|
|
|
|
node = tree.nodes.new(type=node_type)
|
|
|
|
for setting in self.settings:
|
|
# XXX catch exceptions here?
|
|
value = eval(setting.value)
|
|
|
|
try:
|
|
setattr(node, setting.name, value)
|
|
except AttributeError as e:
|
|
self.report({'ERROR_INVALID_INPUT'}, "Node has no attribute " + setting.name)
|
|
print(str(e))
|
|
# Continue despite invalid attribute
|
|
|
|
if space.use_hidden_preview:
|
|
node.show_preview = False
|
|
|
|
node.select = True
|
|
tree.nodes.active = node
|
|
node.location = space.cursor_location
|
|
return node
|
|
|
|
@classmethod
|
|
def poll(cls, context):
|
|
space = context.space_data
|
|
# needs active node editor and a tree to add nodes to
|
|
return (space.type == 'NODE_EDITOR' and space.edit_tree and not space.edit_tree.library)
|
|
|
|
# Default execute simply adds a node
|
|
def execute(self, context):
|
|
self.create_node(context)
|
|
return {'FINISHED'}
|
|
|
|
# Default invoke stores the mouse position to place the node correctly
|
|
# and optionally invokes the transform operator
|
|
def invoke(self, context, event):
|
|
self.store_mouse_cursor(context, event)
|
|
result = self.execute(context)
|
|
|
|
if self.use_transform and ('FINISHED' in result):
|
|
bpy.ops.transform.translate('INVOKE_DEFAULT')
|
|
|
|
return result
|
|
|
|
|
|
# Simple basic operator for adding a node
|
|
class NODE_OT_add_node(NodeAddOperator, Operator):
|
|
'''Add a node to the active tree'''
|
|
bl_idname = "node.add_node"
|
|
bl_label = "Add Node"
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
|
|
|
|
# Add a node and link it to an existing socket
|
|
class NODE_OT_add_and_link_node(NodeAddOperator, Operator):
|
|
'''Add a node to the active tree and link to an existing socket'''
|
|
bl_idname = "node.add_and_link_node"
|
|
bl_label = "Add and Link Node"
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
|
|
link_socket_index = IntProperty(
|
|
name="Link Socket Index",
|
|
description="Index of the socket to link",
|
|
)
|
|
|
|
def execute(self, context):
|
|
space = context.space_data
|
|
ntree = space.edit_tree
|
|
|
|
node = self.create_node(context)
|
|
if not node:
|
|
return {'CANCELLED'}
|
|
|
|
to_socket = getattr(context, "link_to_socket", None)
|
|
if to_socket:
|
|
ntree.links.new(node.outputs[self.link_socket_index], to_socket)
|
|
|
|
from_socket = getattr(context, "link_from_socket", None)
|
|
if from_socket:
|
|
ntree.links.new(from_socket, node.inputs[self.link_socket_index])
|
|
|
|
return {'FINISHED'}
|
|
|
|
|
|
class NODE_OT_add_search(NodeAddOperator, Operator):
|
|
'''Add a node to the active tree'''
|
|
bl_idname = "node.add_search"
|
|
bl_label = "Search and Add Node"
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
bl_property = "node_item"
|
|
|
|
_enum_item_hack = []
|
|
|
|
# Create an enum list from node items
|
|
def node_enum_items(self, context):
|
|
enum_items = NODE_OT_add_search._enum_item_hack
|
|
enum_items.clear()
|
|
|
|
for index, item in enumerate(nodeitems_utils.node_items_iter(context)):
|
|
if isinstance(item, nodeitems_utils.NodeItem):
|
|
nodetype = getattr(bpy.types, item.nodetype, None)
|
|
if nodetype:
|
|
enum_items.append((str(index), item.label, nodetype.bl_rna.description, index))
|
|
return enum_items
|
|
|
|
# Look up the item based on index
|
|
def find_node_item(self, context):
|
|
node_item = int(self.node_item)
|
|
for index, item in enumerate(nodeitems_utils.node_items_iter(context)):
|
|
if index == node_item:
|
|
return item
|
|
return None
|
|
|
|
node_item = EnumProperty(
|
|
name="Node Type",
|
|
description="Node type",
|
|
items=node_enum_items,
|
|
)
|
|
|
|
def execute(self, context):
|
|
item = self.find_node_item(context)
|
|
|
|
# no need to keep
|
|
self._enum_item_hack.clear()
|
|
|
|
if item:
|
|
# apply settings from the node item
|
|
for setting in item.settings.items():
|
|
ops = self.settings.add()
|
|
ops.name = setting[0]
|
|
ops.value = setting[1]
|
|
|
|
self.create_node(context, item.nodetype)
|
|
|
|
if self.use_transform:
|
|
bpy.ops.transform.translate('INVOKE_DEFAULT')
|
|
|
|
return {'FINISHED'}
|
|
else:
|
|
return {'CANCELLED'}
|
|
|
|
def invoke(self, context, event):
|
|
self.store_mouse_cursor(context, event)
|
|
# Delayed execution in the search popup
|
|
context.window_manager.invoke_search_popup(self)
|
|
return {'CANCELLED'}
|
|
|
|
|
|
class NODE_OT_collapse_hide_unused_toggle(Operator):
|
|
'''Toggle collapsed nodes and hide unused sockets'''
|
|
bl_idname = "node.collapse_hide_unused_toggle"
|
|
bl_label = "Collapse and Hide Unused Sockets"
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
|
|
@classmethod
|
|
def poll(cls, context):
|
|
space = context.space_data
|
|
# needs active node editor and a tree
|
|
return (space.type == 'NODE_EDITOR' and space.edit_tree and not space.edit_tree.library)
|
|
|
|
def execute(self, context):
|
|
space = context.space_data
|
|
tree = space.edit_tree
|
|
|
|
for node in tree.nodes:
|
|
if node.select:
|
|
hide = (not node.hide)
|
|
|
|
node.hide = hide
|
|
# Note: connected sockets are ignored internally
|
|
for socket in node.inputs:
|
|
socket.hide = hide
|
|
for socket in node.outputs:
|
|
socket.hide = hide
|
|
|
|
return {'FINISHED'}
|
|
|
|
|
|
class NODE_OT_tree_path_parent(Operator):
|
|
'''Go to parent node tree'''
|
|
bl_idname = "node.tree_path_parent"
|
|
bl_label = "Parent Node Tree"
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
|
|
@classmethod
|
|
def poll(cls, context):
|
|
space = context.space_data
|
|
# needs active node editor and a tree
|
|
return (space.type == 'NODE_EDITOR' and len(space.path) > 1)
|
|
|
|
def execute(self, context):
|
|
space = context.space_data
|
|
|
|
space.path.pop()
|
|
|
|
return {'FINISHED'}
|