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|
# ##### 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 compliant>
import bpy
from bpy.types import (
Menu,
)
__all__ = (
"ToolDef",
"ToolSelectPanelHelper",
"activate_by_id",
"activate_by_id_or_cycle",
"description_from_id",
"keymap_from_id",
)
# Support reloading icons.
if "_icon_cache" in locals():
release = bpy.app.icons.release
for icon_value in _icon_cache.values():
if icon_value != 0:
release(icon_value)
del release
# (filename -> icon_value) map
_icon_cache = {}
def _keymap_fn_from_seq(keymap_data):
def keymap_fn(km):
if keymap_fn.keymap_data:
from bl_keymap_utils.io import keymap_init_from_data
keymap_init_from_data(km, keymap_fn.keymap_data)
keymap_fn.keymap_data = keymap_data
return keymap_fn
def _item_is_fn(item):
return (not (type(item) is ToolDef) and callable(item))
from collections import namedtuple
ToolDef = namedtuple(
"ToolDef",
(
# Unique tool name (withing space & mode context).
"idname",
# The name to display in the interface.
"label",
# Description (for tooltip), when not set, use the description of 'operator',
# may be a string or a 'function(context, item, keymap) -> string'.
"description",
# The name of the icon to use (found in ``release/datafiles/icons``) or None for no icon.
"icon",
# An optional cursor to use when this tool is active.
"cursor",
# An optional gizmo group to activate when the tool is set or None for no gizmo.
"widget",
# Optional keymap for tool, either:
# - A function that populates a keymaps passed in as an argument.
# - A tuple filled with triple's of:
# ``(operator_id, operator_properties, keymap_item_args)``.
#
# Warning: currently 'from_dict' this is a list of one item,
# so internally we can swap the keymap function for the keymap it's self.
# This isn't very nice and may change, tool definitions shouldn't care about this.
"keymap",
# Optional data-block associated with this tool.
# (Typically brush name, usage depends on mode, we could use for non-brush ID's in other modes).
"data_block",
# Optional primary operator (for introspection only).
"operator",
# Optional draw settings (operator options, tool_settings).
"draw_settings",
# Optional draw cursor.
"draw_cursor",
)
)
del namedtuple
def from_dict(kw_args):
"""
Use so each tool can avoid defining all members of the named tuple.
Also convert the keymap from a tuple into a function
(since keymap is a callback).
"""
kw = {
"description": None,
"icon": None,
"cursor": None,
"widget": None,
"keymap": None,
"data_block": None,
"operator": None,
"draw_settings": None,
"draw_cursor": None,
}
kw.update(kw_args)
keymap = kw["keymap"]
if keymap is None:
pass
elif type(keymap) is tuple:
keymap = [_keymap_fn_from_seq(keymap)]
else:
keymap = [keymap]
kw["keymap"] = keymap
return ToolDef(**kw)
def from_fn(fn):
"""
Use as decorator so we can define functions.
"""
return ToolDef.from_dict(fn())
def with_args(**kw):
def from_fn(fn):
return ToolDef.from_dict(fn(**kw))
return from_fn
from_fn.with_args = with_args
ToolDef.from_dict = from_dict
ToolDef.from_fn = from_fn
del from_dict, from_fn, with_args
class ToolActivePanelHelper:
# Sub-class must define.
# bl_space_type = 'VIEW_3D'
# bl_region_type = 'UI'
bl_label = "Active Tool"
# bl_category = "Tool"
def draw(self, context):
layout = self.layout
layout.use_property_split = True
layout.use_property_decorate = False
ToolSelectPanelHelper.draw_active_tool_header(
context,
layout,
show_tool_name=True,
tool_key=ToolSelectPanelHelper._tool_key_from_context(context, space_type=self.bl_space_type),
)
class ToolSelectPanelHelper:
"""
Generic Class, can be used for any toolbar.
- keymap_prefix:
The text prefix for each key-map for this spaces tools.
- tools_all():
Returns (context_mode, tools) tuple pair for all tools defined.
- tools_from_context(context, mode=None):
Returns tools available in this context.
Each tool is a 'ToolDef' or None for a separator in the toolbar, use ``None``.
"""
@staticmethod
def _tool_class_from_space_type(space_type):
return next(
(cls for cls in ToolSelectPanelHelper.__subclasses__()
if cls.bl_space_type == space_type),
None
)
@staticmethod
def _icon_value_from_icon_handle(icon_name):
import os
if icon_name is not None:
assert(type(icon_name) is str)
icon_value = _icon_cache.get(icon_name)
if icon_value is None:
dirname = bpy.utils.system_resource('DATAFILES', "icons")
filename = os.path.join(dirname, icon_name + ".dat")
try:
icon_value = bpy.app.icons.new_triangles_from_file(filename)
except Exception as ex:
if not os.path.exists(filename):
print("Missing icons:", filename, ex)
else:
print("Corrupt icon:", filename, ex)
# Use none as a fallback (avoids layout issues).
if icon_name != "none":
icon_value = ToolSelectPanelHelper._icon_value_from_icon_handle("none")
else:
icon_value = 0
_icon_cache[icon_name] = icon_value
return icon_value
else:
return 0
@staticmethod
def _tools_flatten(tools):
"""
Flattens, skips None and calls generators.
"""
for item in tools:
if item is None:
yield None
elif type(item) is tuple:
for sub_item in item:
if sub_item is None:
yield None
elif _item_is_fn(sub_item):
yield from sub_item(context)
else:
yield sub_item
else:
if _item_is_fn(item):
yield from item(context)
else:
yield item
@staticmethod
def _tools_flatten_with_tool_index(tools):
for item in tools:
if item is None:
yield None, -1
elif type(item) is tuple:
i = 0
for sub_item in item:
if sub_item is None:
yield None, -1
elif _item_is_fn(sub_item):
for item_dyn in sub_item(context):
yield item_dyn, i
i += 1
else:
yield sub_item, i
i += 1
else:
if _item_is_fn(item):
for item_dyn in item(context):
yield item_dyn, -1
else:
yield item, -1
@staticmethod
def _tool_get_active(context, space_type, mode, with_icon=False):
"""
Return the active Python tool definition and icon name.
"""
cls = ToolSelectPanelHelper._tool_class_from_space_type(space_type)
if cls is not None:
tool_active = ToolSelectPanelHelper._tool_active_from_context(context, space_type, mode)
tool_active_id = getattr(tool_active, "idname", None)
for item in ToolSelectPanelHelper._tools_flatten(cls.tools_from_context(context, mode)):
if item is not None:
if item.idname == tool_active_id:
if with_icon:
icon_value = ToolSelectPanelHelper._icon_value_from_icon_handle(item.icon)
else:
icon_value = 0
return (item, tool_active, icon_value)
return None, None, 0
@staticmethod
def _tool_get_by_id(context, space_type, idname):
"""
Return the active Python tool definition and index (if in sub-group, else -1).
"""
cls = ToolSelectPanelHelper._tool_class_from_space_type(space_type)
if cls is not None:
for item, index in ToolSelectPanelHelper._tools_flatten_with_tool_index(cls.tools_from_context(context)):
if item is not None:
if item.idname == idname:
return (cls, item, index)
return None, None, -1
@staticmethod
def _tool_get_by_flat_index(context, space_type, tool_index):
"""
Return the active Python tool definition and index (if in sub-group, else -1).
Return the index of the expanded list.
"""
cls = ToolSelectPanelHelper._tool_class_from_space_type(space_type)
if cls is not None:
i = 0
for item, index in ToolSelectPanelHelper._tools_flatten_with_tool_index(cls.tools_from_context(context)):
if item is not None:
if i == tool_index:
return (cls, item, index)
i += 1
return None, None, -1
@staticmethod
def _tool_get_by_index(context, space_type, tool_index):
"""
Return the active Python tool definition and index (if in sub-group, else -1).
Return the index of the list without expanding.
"""
cls = ToolSelectPanelHelper._tool_class_from_space_type(space_type)
if cls is not None:
i = 0
for item in cls.tools_from_context(context):
if item is not None:
if i == tool_index:
if type(item) is tuple:
index = cls._tool_group_active.get(item[0].idname, 0)
item = item[index]
else:
index = -1
return (cls, item, index)
i += 1
return None, None, -1
@staticmethod
def _tool_active_from_context(context, space_type, mode=None, create=False):
if space_type == 'VIEW_3D':
if mode is None:
mode = context.mode
tool = context.workspace.tools.from_space_view3d_mode(mode, create=create)
if tool is not None:
tool.refresh_from_context()
return tool
elif space_type == 'IMAGE_EDITOR':
space_data = context.space_data
if mode is None:
if space_data is None:
mode = 'VIEW'
else:
mode = space_data.mode
tool = context.workspace.tools.from_space_image_mode(mode, create=create)
if tool is not None:
tool.refresh_from_context()
return tool
elif space_type == 'NODE_EDITOR':
space_data = context.space_data
tool = context.workspace.tools.from_space_node(create=create)
if tool is not None:
tool.refresh_from_context()
return tool
return None
@staticmethod
def _tool_identifier_from_button(context):
return context.button_operator.name
@classmethod
def _km_action_simple(cls, kc, context_descr, label, keymap_fn):
km_idname = f"{cls.keymap_prefix:s} {context_descr:s}, {label:s}"
km = kc.keymaps.get(km_idname)
if km is None:
km = kc.keymaps.new(km_idname, space_type=cls.bl_space_type, region_type='WINDOW', tool=True)
keymap_fn[0](km)
keymap_fn[0] = km.name
# Special internal function, gives use items that contain keymaps.
@staticmethod
def _tools_flatten_with_keymap(tools):
for item_parent in tools:
if item_parent is None:
continue
for item in item_parent if (type(item_parent) is tuple) else (item_parent,):
# skip None or generator function
if item is None or _item_is_fn(item):
continue
if item.keymap is not None:
yield item
@classmethod
def register(cls):
wm = bpy.context.window_manager
# Write into defaults, users may modify in preferences.
kc = wm.keyconfigs.default
# Track which tool-group was last used for non-active groups.
# Blender stores the active tool-group index.
#
# {tool_name_first: index_in_group, ...}
cls._tool_group_active = {}
# ignore in background mode
if kc is None:
return
for context_mode, tools in cls.tools_all():
if context_mode is None:
context_descr = "All"
else:
context_descr = context_mode.replace("_", " ").title()
for item in cls._tools_flatten_with_keymap(tools):
keymap_data = item.keymap
if callable(keymap_data[0]):
cls._km_action_simple(kc, context_descr, item.label, keymap_data)
@classmethod
def keymap_ui_hierarchy(cls, context_mode):
# See: bpy_extras.keyconfig_utils
# Keymaps may be shared, don't show them twice.
visited = set()
for context_mode_test, tools in cls.tools_all():
if context_mode_test == context_mode:
for item in cls._tools_flatten_with_keymap(tools):
km_name = item.keymap[0]
# print((km.name, cls.bl_space_type, 'WINDOW', []))
if km_name in visited:
continue
visited.add(km_name)
yield (km_name, cls.bl_space_type, 'WINDOW', [])
# -------------------------------------------------------------------------
# Layout Generators
#
# Meaning of received values:
# - Bool: True for a separator, otherwise False for regular tools.
# - None: Signal to finish (complete any final operations, e.g. add padding).
@staticmethod
def _layout_generator_single_column(layout, scale_y):
col = layout.column(align=True)
col.scale_y = scale_y
is_sep = False
while True:
if is_sep is True:
col = layout.column(align=True)
col.scale_y = scale_y
elif is_sep is None:
yield None
return
is_sep = yield col
@staticmethod
def _layout_generator_multi_columns(layout, column_count, scale_y):
scale_x = scale_y * 1.1
column_last = column_count - 1
col = layout.column(align=True)
row = col.row(align=True)
row.scale_x = scale_x
row.scale_y = scale_y
is_sep = False
column_index = 0
while True:
if is_sep is True:
if column_index != column_last:
row.label(text="")
col = layout.column(align=True)
row = col.row(align=True)
row.scale_x = scale_x
row.scale_y = scale_y
column_index = 0
is_sep = yield row
if is_sep is None:
if column_index == column_last:
row.label(text="")
yield None
return
if column_index == column_count:
column_index = 0
row = col.row(align=True)
row.scale_x = scale_x
row.scale_y = scale_y
column_index += 1
@staticmethod
def _layout_generator_detect_from_region(layout, region, scale_y):
"""
Choose an appropriate layout for the toolbar.
"""
# Currently this just checks the width,
# we could have different layouts as preferences too.
system = bpy.context.preferences.system
view2d = region.view2d
view2d_scale = (
view2d.region_to_view(1.0, 0.0)[0] -
view2d.region_to_view(0.0, 0.0)[0]
)
width_scale = region.width * view2d_scale / system.ui_scale
if width_scale > 120.0:
show_text = True
column_count = 1
else:
show_text = False
# 2 column layout, disabled
if width_scale > 80.0:
column_count = 2
else:
column_count = 1
if column_count == 1:
ui_gen = ToolSelectPanelHelper._layout_generator_single_column(
layout, scale_y=scale_y,
)
else:
ui_gen = ToolSelectPanelHelper._layout_generator_multi_columns(
layout, column_count=column_count, scale_y=scale_y,
)
return ui_gen, show_text
@classmethod
def draw_cls(cls, layout, context, detect_layout=True, scale_y=1.75):
# Use a classmethod so it can be called outside of a panel context.
# XXX, this UI isn't very nice.
# We might need to create new button types for this.
# Since we probably want:
# - tool-tips that include multiple key shortcuts.
# - ability to click and hold to expose sub-tools.
space_type = context.space_data.type
tool_active_id = getattr(
ToolSelectPanelHelper._tool_active_from_context(context, space_type),
"idname", None,
)
if detect_layout:
ui_gen, show_text = cls._layout_generator_detect_from_region(layout, context.region, scale_y)
else:
ui_gen = ToolSelectPanelHelper._layout_generator_single_column(layout, scale_y)
show_text = True
# Start iteration
ui_gen.send(None)
for item in cls.tools_from_context(context):
if item is None:
ui_gen.send(True)
continue
if type(item) is tuple:
is_active = False
i = 0
for i, sub_item in enumerate(item):
if sub_item is None:
continue
is_active = (sub_item.idname == tool_active_id)
if is_active:
index = i
break
del i, sub_item
if is_active:
# not ideal, write this every time :S
cls._tool_group_active[item[0].idname] = index
else:
index = cls._tool_group_active.get(item[0].idname, 0)
item = item[index]
use_menu = True
else:
index = -1
use_menu = False
is_active = (item.idname == tool_active_id)
icon_value = ToolSelectPanelHelper._icon_value_from_icon_handle(item.icon)
sub = ui_gen.send(False)
if use_menu:
sub.operator_menu_hold(
"wm.tool_set_by_id",
text=item.label if show_text else "",
depress=is_active,
menu="WM_MT_toolsystem_submenu",
icon_value=icon_value,
).name = item.idname
else:
sub.operator(
"wm.tool_set_by_id",
text=item.label if show_text else "",
depress=is_active,
icon_value=icon_value,
).name = item.idname
# Signal to finish any remaining layout edits.
ui_gen.send(None)
def draw(self, context):
self.draw_cls(self.layout, context)
@staticmethod
def _tool_key_from_context(context, *, space_type=None):
if space_type is None:
space_data = context.space_data
space_type = space_data.type
else:
space_data = None
if space_type == 'VIEW_3D':
return space_type, context.mode
elif space_type == 'IMAGE_EDITOR':
if space_data is None:
space_data = context.space_data
return space_type, space_data.mode
elif space_type == 'NODE_EDITOR':
return space_type, None
else:
return None, None
@staticmethod
def tool_active_from_context(context):
space_type = context.space_data.type
return ToolSelectPanelHelper._tool_active_from_context(context, space_type)
@staticmethod
def draw_active_tool_header(
context, layout,
*,
show_tool_name=False,
tool_key=None,
):
if tool_key is None:
space_type, mode = ToolSelectPanelHelper._tool_key_from_context(context)
else:
space_type, mode = tool_key
if space_type is None:
return None
item, tool, icon_value = ToolSelectPanelHelper._tool_get_active(context, space_type, mode, with_icon=True)
if item is None:
return None
# Note: we could show 'item.text' here but it makes the layout jitter when switching tools.
# Add some spacing since the icon is currently assuming regular small icon size.
layout.label(text=" " + item.label if show_tool_name else " ", icon_value=icon_value)
if show_tool_name:
layout.separator()
draw_settings = item.draw_settings
if draw_settings is not None:
draw_settings(context, layout, tool)
return tool
# The purpose of this menu is to be a generic popup to select between tools
# in cases when a single tool allows to select alternative tools.
class WM_MT_toolsystem_submenu(Menu):
bl_label = ""
@staticmethod
def _tool_group_from_button(context):
# Lookup the tool definitions based on the space-type.
cls = ToolSelectPanelHelper._tool_class_from_space_type(context.space_data.type)
if cls is not None:
button_identifier = ToolSelectPanelHelper._tool_identifier_from_button(context)
for item_group in cls.tools_from_context(context):
if type(item_group) is tuple:
for sub_item in item_group:
if (sub_item is not None) and (sub_item.idname == button_identifier):
return cls, item_group
return None, None
def draw(self, context):
layout = self.layout
layout.scale_y = 2.0
_cls, item_group = self._tool_group_from_button(context)
if item_group is None:
# Should never happen, just in case
layout.label(text="Unable to find toolbar group")
return
for item in item_group:
if item is None:
layout.separator()
continue
icon_value = ToolSelectPanelHelper._icon_value_from_icon_handle(item.icon)
layout.operator(
"wm.tool_set_by_id",
text=item.label,
icon_value=icon_value,
).name = item.idname
def _activate_by_item(context, space_type, item, index):
tool = ToolSelectPanelHelper._tool_active_from_context(context, space_type, create=True)
tool.setup(
idname=item.idname,
keymap=item.keymap[0] if item.keymap is not None else "",
cursor=item.cursor or 'DEFAULT',
gizmo_group=item.widget or "",
data_block=item.data_block or "",
operator=item.operator or "",
index=index,
)
WindowManager = bpy.types.WindowManager
handle_map = _activate_by_item._cursor_draw_handle
handle = handle_map.pop(space_type, None)
if (handle is not None):
WindowManager.draw_cursor_remove(handle)
if item.draw_cursor is not None:
def handle_fn(context, item, tool, xy):
item.draw_cursor(context, tool, xy)
handle = WindowManager.draw_cursor_add(handle_fn, (context, item, tool), space_type)
handle_map[space_type] = handle
_activate_by_item._cursor_draw_handle = {}
def activate_by_id(context, space_type, text):
_cls, item, index = ToolSelectPanelHelper._tool_get_by_id(context, space_type, text)
if item is None:
return False
_activate_by_item(context, space_type, item, index)
return True
def activate_by_id_or_cycle(context, space_type, idname, offset=1):
# Only cycle when the active tool is activated again.
cls, item, _index = ToolSelectPanelHelper._tool_get_by_id(context, space_type, idname)
if item is None:
return False
tool_active = ToolSelectPanelHelper._tool_active_from_context(context, space_type)
id_active = getattr(tool_active, "idname", None)
id_current = ""
for item_group in cls.tools_from_context(context):
if type(item_group) is tuple:
index_current = cls._tool_group_active.get(item_group[0].idname, 0)
for sub_item in item_group:
if sub_item.idname == idname:
id_current = item_group[index_current].idname
break
if id_current:
break
if id_current == "":
return activate_by_id(context, space_type, idname)
if id_active != id_current:
return activate_by_id(context, space_type, id_current)
index_found = (tool_active.index + offset) % len(item_group)
cls._tool_group_active[item_group[0].idname] = index_found
item_found = item_group[index_found]
_activate_by_item(context, space_type, item_found, index_found)
return True
def description_from_id(context, space_type, idname, *, use_operator=True):
# Used directly for tooltips.
_cls, item, _index = ToolSelectPanelHelper._tool_get_by_id(context, space_type, idname)
if item is None:
return False
# Custom description.
description = item.description
if description is not None:
if callable(description):
km = _keymap_from_item(context, item)
return description(context, item, km)
return description
# Extract from the operator.
if use_operator:
operator = item.operator
if operator is None:
if item.keymap is not None:
km = _keymap_from_item(context, item)
if km is not None:
for kmi in km.keymap_items:
if kmi.active:
operator = kmi.idname
break
if operator is not None:
import _bpy
return _bpy.ops.get_rna_type(operator).description
return ""
def item_from_id(context, space_type, idname):
# Used directly for tooltips.
_cls, item, _index = ToolSelectPanelHelper._tool_get_by_id(context, space_type, idname)
return item
def item_from_flat_index(context, space_type, index):
_cls, item, _index = ToolSelectPanelHelper._tool_get_by_flat_index(context, space_type, index)
return item
def item_from_index(context, space_type, index):
_cls, item, _index = ToolSelectPanelHelper._tool_get_by_index(context, space_type, index)
return item
def keymap_from_id(context, space_type, idname):
# Used directly for tooltips.
_cls, item, _index = ToolSelectPanelHelper._tool_get_by_id(context, space_type, idname)
if item is None:
return False
keymap = item.keymap
# List container of one.
if keymap:
return keymap[0]
return ""
def _keymap_from_item(context, item):
if item.keymap is not None:
wm = context.window_manager
keyconf = wm.keyconfigs.active
return keyconf.keymaps.get(item.keymap[0])
return None
classes = (
WM_MT_toolsystem_submenu,
)
if __name__ == "__main__": # only for live edit.
from bpy.utils import register_class
for cls in classes:
register_class(cls)
|